CN107796924B - Comprehensive test system and test method for simulating deep space planet gravity field environment - Google Patents

Abstract

The invention discloses a comprehensive test system and a test method for simulating a deep space planet gravitational field environment. The coil group consists of 13 coils with shapes determined according to a specific rule, and the coils are coaxially combined according to a specific combination mode and are fixed in the main box body of the test system through a coil bracket; the interior of the main box body of the test system is filled with cooling liquid and forms a circulation loop with the constant-temperature cold bath through a cooling liquid loop module; the coil excitation power supply group comprises 9 voltage-stabilizing constant-current direct-current power supplies and supplies power to the coils of the coil group according to a specific rule; and the temperature monitoring and alarming module monitors the temperature of the coil group coil in real time. The invention adopts the magnetic force field to simulate the gravity field, and realizes the long-time simulation of the deep space 0-5g planet gravity field and other special physical force field environments.

Description

Comprehensive test system and test method for simulating deep space planet gravity field environment

technical field

The invention relates to a test system and a test method in the field of deep space engineering, in particular to a comprehensive test system and test method for simulating the gravity field environment of a planet in deep space.

Background technique

In recent years, with the continuous increase of population and the rapid development of science and technology, the earth's population carrying capacity, resource reserves and ecological environment have all been severely challenged. In order to solve this problem, China, the United States, Russia, the European Space Agency and other countries and units have launched the observation and research on the moon, Mars and other planets and other near-Earth asteroids, and aimed at establishing the A series of demonstrations and preliminary studies have been carried out on the permanent scientific research base and human life base, and the mining of mineral resources. With the development of aircraft propulsion and control technology and the continuous breakthrough of manned spaceflight, China, the United States and other countries have completed many exploration and geological survey missions for the moon, Mars and some near-Earth asteroids. However, limited by the extreme space environment and surface environment, the construction of alien bases and mining is extremely difficult. One of the important problems is the gravitational field. Early detection shows that the gravity field of the moon and Mars are completely different from the gravity field of the earth. The gravity field of the moon is about 17% of the gravity field of the earth, and the gravity field of Mars is about 38% of the gravity field of the earth. The unique gravitational field environment creates unique geological conditions, loading forms and formation material properties on alien planets and near-Earth asteroids. The engineering construction methods and mining methods that have been tested in practice under the conditions of the earth's gravity field will no longer be applicable, so a lot of basic research needs to be carried out again. However, due to the high cost of landing on planets and asteroids (especially manned landings) at this stage, few opportunities and the extreme test environment on the surfaces of planets and asteroids, in-situ testing and in-situ experimental research have been greatly limited. Therefore, it is of great scientific value and engineering significance to conduct relevant unit tests and physical model tests on the geological materials of alien planets and asteroids on Earth. The primary problem of conducting related research on Earth is to solve the reproduction or simulation of the planet's gravitational field environment, so as to ensure the rationality and applicability of the research results.

At present, the test methods that can be used to simulate the gravity field environment mainly include the centrifugal model test method, the seepage force model test method, the drop tower test method, the test aircraft parabolic flight method and the magnetic gravity model test method. However, the centrifugal model test method can only be used to simulate the gravity field environment with a strength exceeding 10g (g is the acceleration of the earth's gravitational field), and is powerless in simulating the planetary microgravity field and small gravity field; the seepage model test method requires the help of high-pressure water flow. To simulate the gravity field, it does not match the completely dry geological conditions on planets and asteroids and cannot be used for the simulation of the gravity field in this field; the drop tower experiment method and the test aircraft parabolic flight method can better simulate the planet's gravity field environment, but The simulated gravity field environment can only last about 0-30s, which limits the development of many studies. In recent years, the emerging magnetogravity model test method can theoretically simulate the microgravity field and the small gravity field in a static test space for a long time, and has a great application prospect. However, no relevant unit or institution has developed an ideal test device yet. For example, the test device disclosed in the patent CN102213658 can only simulate the gravitational field environment of 0.94-1.06g; although the test devices disclosed in the patents CN102841129 and CN103247208 can simulate the gravitational field environment of 0.7-1.3g and 0-3.0g, due to its test system The flaws in the design principle lead to the rapid heating of the test system and the inability to conduct the test study for a long time. Therefore, it is of great scientific value and practical significance to develop a comprehensive test system and test method for the simulated gravity field environment required by the deep space star base construction and related research in the field of mining.

SUMMARY OF THE INVENTION

Purpose of the invention: The present invention provides a comprehensive test system and test method for simulating gravity field environment with reasonable structure, good heat dissipation, and accurate control, which can be used for the construction of deep space star bases and related researches in the field of mining. The electromagnetic force field generated in the magnetic field environment of a specific form superimposes or weakens the gravitational field of the earth, so as to achieve the purpose of simulating the gravitational field of the outer space planet.

Technical scheme: In order to realize the above-mentioned purpose, the technical scheme adopted in the present invention is:

The comprehensive test system for simulating the deep space planet gravity field environment is characterized by: including test space, coil group, coil excitation power group, coil support, main box of test system, temperature monitoring and alarm module, constant temperature cold bath, and cooling liquid circuit module .

The test space is a cylindrical space that is transparent up and down, and is located in the center of the main box of the test system.

The coil set includes A coil, B coil, C coil, D coil, E coil, F coil, G coil, H coil, I coil, J coil, K coil, L coil and M coil;

As in the prior art, the coils are all structures with a circular hole in the center, the size and shape of which are jointly controlled by the inner radius, size parameter a and size parameter b;

The dimension parameter a is the ratio of the axial height to the inner diameter of the coil;

The size parameter b is the ratio of the outer diameter to the inner diameter of the coil;

The size and shape of each coil of the coil group are determined based on the A coil, specifically: the inner radius of the A coil is r, the size parameter a is 6.00, and the size parameter b is 1.60; the B coil, the C coil, the D coil and the The E coil has the same size, its inner radius is 1.70r, the dimension parameter a is 0.86, and the dimension parameter b is 1.82; the F coil, G coil, H coil, I coil, J coil, K coil, L coil, M coil have The same size, its inner radius is 3.30r, the size parameter a is 0.14, and the size parameter b is 1.61;

The B coils, C coils, D coils, E coils, F coils, G coils, H coils, I coils, J coils, K coils, L coils and M coils are coaxially assembled on the basis of the top surface of the A coil, specifically: : The top surface of the B coil and the A coil are installed at the same height; the distance between the top surface of the C coil and the bottom surface of the A coil is 3.03r; the distance between the top surface of the D coil and the top surface of the A coil is 6.05r; the distance between the top surface of the E coil and the top surface of the A coil is 9.08 r; the distance between the top surface of the F coil and the top surface of the A coil is 0.32r; the distance between the top surface of the G coil and the top surface of the A coil is 1.34r; the distance between the top surface of the H coil and the top surface of the A coil is 2.36r; the distance between the top surface of the I coil and the top surface of the A coil The distance between the top surface of the J coil and the top surface of the A coil is 7.72r; the distance between the top surface of the K coil and the top surface of the A coil is 8.74r; the distance between the top surface of the L coil and the top surface of the A coil is 9.76r; the distance between the top surface of the M coil and the A coil is 9.76r. The top surface is 10.78r.

The coil excitation power group includes A regulated constant current DC power supply, B regulated constant current DC power supply, C regulated constant current DC power supply, D regulated constant current DC power supply, E regulated constant current DC power supply, and F regulated voltage Constant-current DC power supply, G-regulated constant-current DC power supply, H-regulated constant-current DC power supply, and I-regulated constant-current DC power supply;

The coil excitation power supply group provides the coil group with adjustable steady-state current, specifically: A regulated constant current DC power supply supplies power to A coil, B regulated constant current DC power supply supplies power to B coil, and C regulated constant current power supply The DC power supply supplies power to the C coil, the D regulated constant current DC power supply supplies power to the D coil, the E regulated constant current DC power supply supplies power to the E coil, the F regulated constant current DC power supply supplies power to the F coil and the G coil, and the G regulated constant current DC power supply supplies power to the F coil and the G coil. The current and DC power supply supplies power for the H coil and the I coil, the H voltage-stabilized constant-current DC power supply supplies power for the J coil and the K coil, and the I voltage-stabilized constant-current DC power supply supplies power for the L coil and the M coil;

Each of the voltage-stabilized constant-current DC power supplies and the coils are connected in series by wires, and the magnitude and direction of the current input to the coils can be adjusted according to the needs of the test.

The coil support is used for erecting and fixing the coil group, including a main frame, several longitudinal beams and beams, and the specific number and spacing of the longitudinal beams and beams are set according to the assembly size of the coil.

The main box of the test system is a rectangular closed box with a cylindrical hole that penetrates up and down in the center. Each surface of the box and the central hole are sealed and isolated from the outside world through the side walls and the hole wall, and the central cylindrical hole is inside the box. The diameter of the sidewall of the A remains the same as the inner diameter of the A coil;

After each coil of the coil group is erected on the coil support and fixed, it is integrally installed and sealed in the main box of the test system. The cylindrical hole wall in the center of the main box of the test system passes through the center hole of the A coil coaxially and axially.

The temperature monitoring and alarm module includes data acquisition and display, A temperature sensor, B temperature sensor, C temperature sensor, D temperature sensor, E temperature sensor, F temperature sensor, G temperature sensor, H temperature sensor, I temperature sensor, J temperature sensor. Temperature sensor, K temperature sensor, L temperature sensor;

The temperature sensors are installed on the inner wall of each coil of the coil group, and are connected to the data acquisition and display through the wires penetrating the top plate of the main box of the test system, specifically: A temperature sensor is installed on the inner wall of the B coil, B temperature sensor Installed on the inner wall of the C coil, C temperature sensor is installed on the inner wall of the D coil, D temperature sensor is installed on the inner wall of the E coil, E temperature sensor is installed on the inner wall of the F coil, F temperature sensor is installed on the inner wall of the G coil, G temperature sensor Installed on the inner side wall of H coil, H temperature sensor is installed on the inner side wall of I coil, I temperature sensor is installed on the inner side wall of J coil, J temperature sensor is installed on the inner side wall of K coil, K temperature sensor is installed on the inner side wall of L coil, L temperature sensor is installed Installed on the inner side wall of the M coil;

The data collection and display can collect and display the temperature value of each temperature sensor in real time, and alarm according to the set early warning value.

The cooling liquid circuit module includes cooling liquid, A cooling liquid pipeline, B cooling liquid pipeline, A pressure pump, B pressure pump, A liquid level sensor and module, and B liquid level sensor and module;

The cooling liquid is filled with the main box of the test system, and the whole coil group is immersed in the cooling liquid;

The A cooling liquid pipeline is led out from the top plate of the main box of the test system, and is connected to the A pressure pump and extends into the constant temperature cooling tank of the constant temperature cooling bath, so as to realize the flow of the cooling liquid from the main box body of the test system to the constant temperature cooling tank;

The B cooling liquid pipeline is led out from the constant temperature cooling tank, and is connected to the B pressure pump and extends from the bottom of the main box of the test system to the inside thereof, so as to realize the flow of the cooling liquid from the constant temperature cooling tank to the main box of the test system;

The A liquid level sensor and the module include A liquid level sensor and A relay, and the A liquid level sensor is installed at the top position in the constant temperature cooling tank of the constant temperature cold bath;

The power supply of the A pressure pump is controlled by the A liquid level sensor and the module. When the coolant level is lower than the A liquid level sensor, the A relay controls the A pressure pump to energize and start to work. When the liquid level exceeds the A liquid level sensor, A relay controls A pressure pump to power off and stop working;

The B liquid level sensor and the module include a B liquid level sensor and a B relay, and the B liquid level sensor is installed in the middle position in the constant temperature cooling tank of the constant temperature cold bath;

The power supply of the B pressure pump is controlled by the B liquid level sensor and the module. When the coolant level is higher than the B liquid level sensor, the B relay controls the B pressure pump to energize and start to work. When the liquid level is lower than the B liquid level sensor , B relay controls B pressure pump to power off and stop working.

Preferably, each of the coils is made of glass fiber reinforced plastic as the skeleton and is uniformly wound with copper wires in the same direction in the radial and axial directions. After electrification, the current is evenly distributed along the coil section, and the current direction is perpendicular to the coil axial direction.

Preferably, the coil support and the main box of the test system are made of high-strength non-magnetic materials, such as pure copper, stainless steel, and high-strength resin materials.

Preferably, the cooling liquid is a liquid with good insulation and thermal conductivity, such as transformer oil and the like.

A comprehensive test method for simulating a deep space planet gravity field environment, comprising the following steps:

(1) Calculate the current value of each coil of the input coil group according to the strength, shape and direction of the gravity field of the test target;

(2) Adjust the voltage output and current output of each constant voltage and constant current DC power supply of the coil excitation power group to zero, and turn on all the power supplies for preheating;

(3) Open the constant temperature cooling bath, set the target cooling temperature, and run until the temperature of the cooling liquid in the constant temperature cooling tank reaches the set target cooling temperature;

(4) Turn on the temperature monitoring and alarm module, set the temperature warning value of each coil, and then monitor the temperature of each coil in real time;

(5) Turn on the A pressure pump and the B pressure pump at the same time, so that the constant temperature cooling tank and the cooling liquid inside the main box of the test system form a circulation loop, and the temperature of the cooling liquid is controlled by the constant temperature cooling bath until the cooling liquid flows through the constant temperature cooling tank. The liquid temperature is stabilized to the set target cooling temperature value;

(6) Put the test model or test object in the test space, and complete all operations before loading the gravity field;

(7) According to the input current value determined in step 1, input the current to the coil group through the following sequence: A coil-B coil-C coil-D coil-E coil-H&I coil-J&K coil-F&G coil-L&M coil;

(8) Monitor the temperature status of each coil in real time through the temperature monitoring and alarm module, and complete the set test content. If a temperature alarm occurs during the experiment, the test will be terminated;

(9) Adjust the input current of each coil to zero in the following order: L&M coil-F&G coil-J&K coil-H&I coil-E coil-D coil-C coil-B coil-A coil, then turn off all the coil excitation power packs power supply;

(10) Continue to run the constant temperature cooling bath to cool down the coil group, monitor the temperature value of each coil until it reaches the room temperature value, and the temperature of the cooling liquid in the constant temperature cooling bath is stable below room temperature at the same time;

(11) First close the A pressure pump and B pressure pump, then close the constant temperature cold bath, and finally close the temperature monitoring and alarm module, and the test is over.

Beneficial effects: The present invention provides a comprehensive test system and test method for the test research related to the gravity field environment in the deep space field. The test system can generate magnetic field environments of different directions, shapes and sizes in its test space, and cooperate with relevant materials It can simulate the 0-5g planetary gravity field and provide a gravity field environment for related physical model tests, unit tests, geomechanical tests and even biological tests; at the same time, it can also simulate complex forms of physical force by adjusting the current mode of the input coil group. The field environment provides a platform for carrying out relevant special experimental research; the range of the gravitational field simulated by the present invention can cover the strength of the gravitational field of all known planets and asteroids. The input current is accurately controlled; the invention effectively cools the coil group through the constant temperature cooling tank and the cooling liquid circuit of the constant temperature cooling bath, which greatly increases the test time and prolongs the service life of the test system; the temperature monitoring and alarm module of the invention The operating state of the test system can be effectively monitored, and the reliability and safety of the test system are improved; the upper and lower transparent test space of the present invention enhances the convenience of operation, and facilitates operations such as sensor installation, dynamic loading, etc. that need to be coordinated with the external space .

Description of drawings

1 is a schematic diagram of the overall structure and components of the present invention;

Fig. 2 is the structure diagram of coil group A coil of the present invention;

Fig. 3 is the structure diagram of coil group B/C/D/E coil of the present invention;

FIG. 4 is a structural diagram of the coil group F/G/H/I/J/K/L/M coil of the present invention;

5 is a top view of the main box of the test system of the present invention;

Fig. 6 is the front view of the main box of the test system of the present invention;

Fig. 7 is the bottom view of the main box of the test system of the present invention;

8 is a top view of a coil support according to a specific embodiment of the present invention;

9 is a front view of a coil support according to a specific embodiment of the present invention;

10 is a right side view of a coil support according to a specific embodiment of the present invention;

In the figure: 1A, A coil, 1B, B coil, 1C, C coil, 1D, D coil, 1E, E coil, 1F, F coil, 1G, G coil, 1H, H coil, 1I, I coil, 1J, J coil, 1K, K coil, 1L, L coil, 1M, M coil, 2, test space, 3, coil support, 3A, coil support A beam, 3B, coil support B beam, 3C, coil support C beam, 3D , coil support D beam, 3E, coil support E beam, 3F, coil support F beam, 3G, coil support G beam, 3H, coil support H beam, 3I, coil support I beam, 3J, coil support J beam, 3K, Coil holder K stringer, 3L, coil carrier L stringer, 3M, coil carrier M stringer, 3N, coil carrier N stringer, 3O, coil carrier O stringer, 3P, coil carrier P stringer, 3Q, coil carrier Q stringer, 3R, coil bracket R stringer, 3S, coil bracket S stringer, 3T, coil bracket T stringer, 4, main box of test system, 5, constant temperature cooling bath, 5A, constant temperature cooling tank, 6A, A pressure pump, 6B, B pressure pump, 7, wire, 8A, A liquid level sensor and module, 8B, B liquid level sensor and module, 9A, A coolant pipeline, 9B, B coolant pipeline, 10, Data acquisition and display, 11A, A temperature sensor, 11B, B temperature sensor, 11C, C temperature sensor, 11D, D temperature sensor, 11E, E temperature sensor, 11F, F temperature sensor, 11G, G temperature sensor, 11H, H Temperature sensor, 11I, I temperature sensor, 11J, J temperature sensor, 11K, K temperature sensor, 11L, L temperature sensor, 12A, A constant voltage and constant current power supply, 12B, B constant voltage and constant current power supply, 12C, C constant voltage Constant current power supply, 12D, D constant voltage and constant current power supply, 12E, E constant voltage and constant current power supply, 12F, F constant voltage and constant current power supply, 12G, G constant voltage and constant current power supply, 12H, H constant voltage and constant current power supply, 12I , I constant voltage constant current power supply.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings.

As shown in Figure 1, it is a comprehensive test system for simulating the deep space planet gravity field environment, including test space 2, coil group, coil excitation power group, coil support 3, test system main box 4, measurement monitoring and alarm module, constant temperature cooling bath 5 and the coolant circuit module.

As shown in FIG. 5 , FIG. 6 and FIG. 7 , the test space 2 is a cylindrical space that is transparent up and down, and is located in the center of the main box 4 of the test system.

As shown in FIG. 1 , the coil set includes A coil 1A, B coil 1B, C coil 1C, D coil 1D, E coil 1E, F coil 1F, G coil 1G, H coil 1H, I coil 1I, J coil 1J, K Coil 1K, L coil 1L, M coil 1M;

As shown in Fig. 2, Fig. 3 and Fig. 4, the coils are all structures with a circular hole in the center, and are made of glass fiber reinforced plastic as the skeleton and are uniformly wound with copper wires in the same direction in the radial and axial directions, specifically: A coil 1A The inner radius is 50mm, the outer radius is 80mm, and the height is 600mm; B coil 1B, C coil 1C, D coil 1F and E coil 1E have the same size, their inner radius is 85mm, outer radius is 155mm, and height is 146mm; F Coil 1F, G coil 1G, H coil 1H, I coil 1I, J coil 1J, K coil 1K, L coil 1L, M coil 1M have the same size, their inner radius is 165mm, outer radius is 265mm, and height is 45mm;

1, the B coil 1B, C coil 1C, D coil 1D, E coil 1E, F coil 1F, G coil 1G, H coil 1H, I coil 1I, J coil 1J, K coil 1K, L coil 1L, The M coil 1M is assembled coaxially with the top surface of the A coil 1A as the reference, specifically: the B coil 1B and the A coil 1A top surface are installed at the same height; the C coil 1C top surface is 151.33mm away from the A coil 1A top surface; D coil 1D The top surface is 302.66mm from the top surface of the A coil 1A; the top surface of the E coil 1E is 453.99mm from the top surface of the A coil 1A; the distance between the top surface of the F coil 1F and the top surface of the A coil 1A is 16.00mm; the distance between the top surface of the G coil 1G and the A coil The top surface of 1A is 67.00mm; the top surface of H coil 1H is 118.00mm from the top surface of A coil 1A; the top surface of I coil 1I is 169.00mm from the top surface of A coil 1A; the top surface of J coil 1J is 386.00mm from the top surface of A coil 1A mm; the distance between the top surface of the K coil 1K and the top surface of the A coil 1A is 437.00mm; the distance between the top surface of the L coil 1L and the top surface of the A coil 1A is 488.00mm; the distance between the top surface of the M coil 1M and the top surface of the A coil 1A is 539.00mm.

As shown in Figure 1, the coil excitation power supply group includes A regulated constant current DC power supply 12A, B regulated constant current DC power supply 12B, C regulated constant current DC power supply 12C, D regulated constant current DC power supply 12D, E regulated voltage Constant-current DC power supply 12E, F-regulated constant-current DC power supply 12F, G-regulated constant-current DC power supply 12G, H-regulated constant-current DC power supply 12H, and I-regulated constant-current DC power supply 12I;

As shown in Figure 1, the coil excitation power supply group provides the coil group with adjustable steady-state current, specifically: A regulated constant current DC power supply 12A supplies power to the A coil 1A, and B regulated constant current DC power supply 12B is for the B coil. 1B power supply, C regulated constant current DC power supply 12C supplies power to C coil 1C, D regulated constant current DC power supply 12D supplies power to D coil 1D, E regulated constant current DC power supply 12E supplies power to E coil 1E, F regulated constant current DC power supply The DC power supply 12F supplies power for the F coil 1F and the G coil 1G, the G stabilized constant current DC power supply 12G supplies power for the H coil 1H and the I coil 1I, the H stabilized constant current DC power supply 12H supplies power for the J coil 1J and the K coil 1K, I The regulated constant current DC power supply 12I supplies power for the L coil 1L and the M coil 1M;

Each of the voltage-stabilized constant-current DC power supplies and the coils are connected in series through wires, and the magnitude and direction of the current of each coil can be adjusted according to test requirements.

As shown in Figure 8, Figure 9 and Figure 10, the coil support 3 includes an outer frame, 10 pairs of longitudinal beams and 10 pairs of beams. The outer frame is welded with rectangular stainless steel with a side length of 10 × 10 mm. It is welded by rectangular stainless steel with a length of 15×6mm. Specifically, a pair of longitudinal beams 3K are welded horizontally and longitudinally between the left front and rear pillars of the coil bracket 3 and the right front and rear pillars respectively. The bottom height is 20mm, a pair of beams 3A horizontally and horizontally equal-height welded longitudinal beams between 3K, with a spacing of 420mm; a pair of longitudinal beams 3L are welded horizontally and longitudinally between the left front and rear pillars and the right front and rear pillars of the coil bracket 3 respectively, and the bottom height is 71mm, a pair of beams 3B are welded between a pair of longitudinal beams 3L at the same height horizontally and horizontally, with a spacing of 420mm; a pair of longitudinal beams 3M are welded horizontally and longitudinally between the left front and rear pillars and the right front and rear pillars of the coil bracket 3 respectively. , the bottom height is 122mm, a pair of beams 3C are welded horizontally and horizontally between a pair of longitudinal beams 3M with a spacing of 420mm; a pair of longitudinal beams 3N are welded horizontally and longitudinally to the left front and rear pillars and the right front and rear of the coil bracket 3 Between the pillars, the height of the bottom is 173mm, and a pair of beams 3D are welded at the same height horizontally and horizontally between a pair of longitudinal beams 3N, with a spacing of 420mm; Between the front and rear pillars on the right side, the bottom height is 224mm, a pair of beams 3E are welded horizontally and horizontally between a pair of longitudinal beams 3O with a spacing of 420mm; a pair of longitudinal beams 3P are welded horizontally and longitudinally to the left side of the coil bracket 3 respectively. Between the front and rear pillars and the right front and rear pillars, the bottom height is 390mm, and a pair of beams 3F are welded horizontally and horizontally between a pair of longitudinal beams 3P with a spacing of 420mm; a pair of longitudinal beams 3Q are respectively welded horizontally and longitudinally to the coil bracket 3 Between the left front and rear pillars and the right front and rear pillars, the bottom height is 441mm, a pair of beams 3G are horizontally and horizontally welded at the same height between a pair of longitudinal beams 3Q, and the spacing is 420mm; a pair of longitudinal beams 3R are welded horizontally and longitudinally. Between the left front and rear pillars of the ring bracket 3 and the right front and rear pillars, the bottom height is 492mm, and a pair of beams 3H are horizontally and horizontally welded between a pair of longitudinal beams 3R at a distance of 420mm; a pair of longitudinal beams 3S are horizontal Longitudinal welding is between the left front and rear pillars and the right front and rear pillars of the coil support 3, the bottom height is 543mm, a pair of beams 3I are welded horizontally and horizontally between a pair of longitudinal beams 3S, and the spacing is 420mm; a pair of longitudinal beams The 3T is welded horizontally and longitudinally between the left front and rear pillars and the right front and rear pillars of the coil support 3, with a bottom height of 594mm, a pair of beams 3J are welded horizontally and horizontally between a pair of longitudinal beams 3T, and the spacing is 420mm;

As shown in Figure 5, Figure 6 and Figure 7, the main box 4 of the test system is a rectangular closed box with a cylindrical hole that penetrates up and down in the center. It is welded by a 5mm thick stainless steel plate. The shaped holes are sealed and isolated from the outside world through the side wall and the hole wall, and the diameter of the side wall of the cylindrical hole inside the box is the same as the inner diameter of the A coil 1A;

As shown in Figure 1, after each coil of the coil group is erected on the beam of the coil support 3 and fixed, it is integrally installed and sealed in the main box 4 of the test system. The cylindrical hole in the center of the main box 4 of the test system is coaxial with the wall To pass through the center hole of the A coil 1A.

As shown in FIG. 1 , the temperature monitoring and alarm module includes data acquisition and display 10, A temperature sensor 11A, B temperature sensor 11B, C temperature sensor 11C, D temperature sensor 11D, E temperature sensor 11E, F temperature sensor 11F, G temperature sensor 11G, H temperature sensor 11H, I temperature sensor 11I, J temperature sensor 11J, K temperature sensor 11K and L temperature sensor 11L;

The temperature sensors are installed on the inner walls of the coils, and are connected to the data acquisition and display 10 through the wires 7 penetrating the top plate of the main box 4 of the test system, specifically: A temperature sensor 11A is installed on the inner wall of the B coil 1B, Sensor 11B is installed on the inner wall of C coil 1C, C temperature sensor 11C is installed on the inner wall of D coil 1D, D temperature sensor 11D is installed on the inner wall of E coil 1E, E temperature sensor 11E is installed on the inner wall of F coil 1F, F temperature sensor 11F Mounted on the inner side wall of G coil 1G, G temperature sensor 11G mounted on the inner side wall of H coil 1H, H temperature sensor 11H mounted on the inner side wall of I coil 1I, I temperature sensor 11I mounted on the inner side wall of J coil 1J, J temperature sensor 11J mounted on the inner side wall of The inner side wall of the K coil 1K, the K temperature sensor 11K is installed on the inner side wall of the L coil 1L, and the L temperature sensor 11L is installed on the inner side wall of the M coil 1M;

The data collection and display 10 collects and displays the temperature value of each temperature sensor in real time, and alarms according to the set early warning value.

The cooling liquid circuit module includes cooling liquid, A cooling liquid pipeline 9A, B cooling liquid pipeline 9B, A pressure pump 6A, B pressure pump 6B, A liquid level sensor and module 8A, and B liquid level sensor and module 8B;

Specifically, transformer oil is selected as the cooling liquid, and it is filled with the main box 4 of the test system, and the entire coil set is immersed;

The A cooling liquid pipeline 9A is drawn from the top plate of the main box 4 of the test system, and is connected to the A pressure pump 6A and extends into the constant temperature cooling tank 5A, so as to realize the flow of the transformer oil from the main box 4 of the test system to the constant temperature cooling tank 5A;

The B cooling liquid pipeline 9B is led out from the constant temperature cooling tank, and is connected to the B pressure pump 6B and extends from the bottom of the main box 4 of the test system to the inside thereof, so as to realize the transfer of transformer oil from the constant temperature cooling tank 5A to the main box 4 of the test system. flow;

Described A liquid level sensor and module 8A include A liquid level sensor and A relay, A liquid level sensor is installed in the top position in the constant temperature cooling tank 5A of the constant temperature cooling bath 5;

The power supply of the A pressure pump 6A is controlled by the A liquid level sensor and the module 8A. When the transformer oil level is lower than the A liquid level sensor, the A relay controls the A pressure pump 6A to energize and start to work. When the transformer oil level exceeds the A liquid level. When the surface sensor is turned off, the A relay controls the A pressure pump 6A to stop working when the power is cut off;

The B liquid level sensor and module 8B include a B liquid level sensor and a B relay, and the B liquid level sensor is installed in the central position of the constant temperature cooling tank 5A of the constant temperature cooling bath 5;

The power supply of the B pressure pump 6B is controlled by the B liquid level sensor and the module 8B. When the transformer oil level is higher than the B liquid level sensor, the B relay controls the B pressure pump 6B to energize and start to work. When the transformer oil level is lower than B When the liquid level is sensed, the B relay controls the B pressure pump 6B to stop working when the power is cut off.

A comprehensive test method for simulating a deep space planet gravity field environment, comprising the following steps:

(1) Calculate the current value of each coil of the input coil group according to the strength, shape and direction of the gravity field of the test target;

(2) Adjust the voltage output and current output of each constant voltage and constant current DC power supply of the coil excitation power group to zero, and turn on all the power supplies for preheating;

(3) open the constant temperature cooling bath 5, set the target cooling temperature, run to the temperature of the transformer oil in the constant temperature cooling tank 5A and reach the set target cooling temperature;

(4) Turn on the temperature monitoring and alarm module, set the temperature warning value of each coil, and then monitor the temperature of each coil in real time;

(5) Turn on the A pressure pump 6A and the B pressure pump 6B at the same time, so that the constant temperature cooling tank 5A of the constant temperature cooling bath 5 and the transformer oil in the main box 4 of the test system form a circulation loop, and the transformer oil is controlled by the constant temperature cooling bath 5 temperature until the transformer temperature of the constant temperature cooling tank 5A stabilizes to the set target cooling temperature value;

(6) Put the test model or test object in the test space 2, and complete all the operations before loading the gravity field;

(7) According to the input current value of each coil determined in step 1, input current to the coil group in the following order: A coil 1A-B coil 1B-C coil 1C-D coil 1D-E coil 1E-H&I coil 1H&1I-J&K Coil 1J&1K-F&G Coil 1F&1G-L&M Coil 1L&1M;

(8) Monitor the temperature of each coil in real time through the temperature monitoring and alarm module, complete the setting of the test content, and terminate the test if a temperature alarm occurs during the experiment;

(9) Adjust the input current of each coil to zero in the following order: L&M Coil 1L&1M-F&G Coil 1F&1G-J&K Coil 1J&1K-H&I Coil 1H&1I-E Coil 1E-D Coil 1D-C Coil 1C-B Coil 1B-A Coil 1A , and then turn off all power to the coil excitation power pack;

(10) Continue to run the constant temperature cooling bath 5 to cool down the coil group, monitor the temperature of each coil through the temperature monitoring and alarm module 10 until it reaches room temperature, and the temperature of the transformer oil in the constant temperature cooling bath 5A is stable below room temperature;

(11) First close the A pressure pump 6A and the B pressure pump 6B, then close the constant temperature cooling bath 5, and finally close the temperature monitoring and alarm module, and the test is over.

The above is only the preferred embodiment of the present invention, it should be pointed out that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can also be made, and these improvements and modifications are also It should be regarded as the protection scope of the present invention.

Claims (7)

1. The comprehensive test system for simulating the deep space planet gravity field environment is characterized in that: it comprises a test system main box (4), a temperature monitoring and alarm module, a constant temperature cold bath (5), a cooling liquid circuit module, a coil excitation power supply group, Test space (2); the test system main box body (4) is a closed box body with a central belt that is transparent up and down; the test space (2) is located in the center belt of the test system main box body (4); the test The system main box (4) includes a coil support (3), a coil group, and a cooling liquid, the coil support is used for erecting and fixing the coil group, and the cooling liquid is filled with the test system main box (4), and the coil group is integrated The coil is immersed in the cooling liquid, the coils in the coil group are coaxially assembled, and sleeved on the outside of the test space (2); Each coil is powered; the temperature monitoring and alarm module includes a temperature sensor, data acquisition and display (10) arranged on each coil of the coil group, the temperature sensor is connected to the data acquisition and display (10), the data acquisition and The display (10) collects and displays the temperature value of each temperature sensor in real time, and gives an alarm according to the set pre-warning value; the cooling liquid communicates with the constant temperature cooling bath (5) through the cooling liquid circuit module; The coil set includes A coil (1A), B coil (1B), C coil (1C), D coil (1D), E coil (1E), F coil (1F), G coil (1G), H coil ( 1H), I coil (1I), J coil (1J), K coil (1K), L coil (1L), M coil (1M); each coil of the coil group is based on the top surface of A coil (1A) Coaxial assembly, the B coil (1B), C coil (1C), D coil (1D), E coil (1E) are sleeved on the outside of coil A (1A) from top to bottom, the F coil (1F) ), G coil (1G), H coil (1H), I coil (1I), J coil (1J), K coil (1K), L coil (1L), M coil (1M) from top to bottom Outside of B coil (1B), C coil (1C), D coil (1D), E coil (1E); Each of the coils has a structure with a circular hole in the center, and its size specification is limited to: the inner radius of the A coil (1A) is r, the size parameters a and b are 6.00 and 1.60 respectively; the B coil (1B), the C coil (1C ), D coil (1D) and E coil (1E) have the same size, their inner radius is 1.70r, and the dimension parameters a and b are 0.86 and 1.82 respectively; F coil (1F), G coil (1G), H coil (1H) ), I coil (1I), J coil (1J), K coil (1K), L coil (1L), M coil (1M) have the same size, their inner radius is 3.30r, and the dimension parameters a and b are 0.14, 1.61; the size parameter a is the ratio of the axial height to the inner diameter of the coil; the size parameter b is the ratio of the outer diameter to the inner diameter of the coil; The specific installation height of each coil of the coil set is as follows: the top surface of the B coil (1B) and the A coil (1A) are the same height; the distance between the top surface of the C coil (1C) and the top surface of the A coil (1A) is 3.03r; the D coil ( 1D) The distance from the top surface of the A coil (1A) to the top surface is 6.05r; the distance from the top surface of the E coil (1E) to the top surface of the A coil (1A) is 9.08r; the distance from the top surface of the F coil (1F) to the top surface of the A coil (1A) The distance between the top surface of the G coil (1G) and the top surface of the A coil (1A) is 1.34r; the distance between the top surface of the H coil (1H) and the top surface of the A coil (1A) is 2.36r; the distance between the top surface of the I coil (1I) The top surface of the A coil (1A) is 3.38r; the top surface of the J coil (1J) is 7.72r from the top surface of the A coil (1A); the top surface of the K coil (1K) is 8.74r from the top surface of the A coil (1A); L The distance from the top surface of the coil (1L) to the top surface of the A coil (1A) is 9.76r; the distance from the top surface of the M coil (1M) to the top surface of the A coil (1A) is 10.78r. 2. The comprehensive test system for simulating deep space planet gravity field environment according to claim 1, is characterized in that: described test space (2) is a cylindrical space that is transparent up and down, and is located in the main box (4) of the test system. Central location. 3. simulated deep space planet gravity field environment comprehensive test system according to claim 1, is characterized in that: described coil excitation power group is made up of A voltage-stabilized constant-current DC power supply (12A), B voltage-stabilized constant-current DC power supply (12A). 12B), C stabilized constant current DC power supply (12C), D stabilized constant current DC power supply (12D), E stabilized constant current DC power supply (12E), F stabilized constant current DC power supply (12F), G stabilized voltage It consists of constant current DC power supply (12G), H regulated constant current DC power supply (12H) and I regulated constant current DC power supply (12I); The coil excitation power supply group provides a steady-state DC current with adjustable size for the coil group, and the specific power supply relationship is: A regulated constant current DC power supply (12A) supplies power to A coil (1A), and B regulated constant current DC power supply ( 12B) supplies power to B coil (1B), C stabilized constant current DC power supply (12C) supplies power to C coil (1C), D stabilized constant current DC power supply (12D) supplies power to D coil (1D), E stabilized constant current power supply The current DC power supply (12E) supplies power to the E coil (1E), the F regulated constant current DC power supply (12F) supplies power to the F coil (1F) and the G coil (1G), and the G regulated constant current DC power supply (12G) is H Coil (1H) and I coil (1I) supply power, H stabilized constant current DC power supply (12H) supplies power to J coil (1J) and K coil (1K), and I stabilized constant current DC power supply (12I) supplies power to L coil ( 1L) and M coil (1M) power supply; The voltage-stabilized constant-current DC power supply and the coil are connected in series through wires, and the magnitude and direction of the current can be adjusted. 4. The comprehensive test system for simulating deep space planet gravity field environment according to claim 1, characterized in that: the main box (4) of the test system is a rectangular closed box with a cylindrical hole that is transparent up and down in the center, The diameter of the side wall of the cylindrical hole inside the box is kept consistent with the inner diameter of the A-coil (1A), and the cylindrical hole wall in the center of the main box (4) of the test system passes through the A-coil (1A) coaxially and axially. the center hole. 5. The simulated deep space planet gravity field environment comprehensive test system according to claim 1, wherein the temperature monitoring and alarm module comprises data acquisition and display (10), A temperature sensor (11A), B temperature sensor (11B), C temperature sensor (11C), D temperature sensor (11D), E temperature sensor (11E), F temperature sensor (11F), G temperature sensor (11G), H temperature sensor (11H), I temperature sensor ( 11I), J temperature sensor (11J), K temperature sensor (11K), L temperature sensor (11L); Each of the temperature sensors is installed on the inner wall of the coil of the coil group, and the specific corresponding relationship is: the A temperature sensor (11A) is installed on the inner wall of the B coil (1B), and the B temperature sensor (11B) is installed on the inner wall of the C coil (1C). , C temperature sensor (11C) is installed on the inner wall of D coil (1D), D temperature sensor (11D) is installed on the inner wall of E coil (1E), E temperature sensor (11E) is installed on the inner wall of F coil (1F), F The temperature sensor (11F) is installed on the inner wall of the G coil (1G), the G temperature sensor (11G) is installed on the inner wall of the H coil (1H), the H temperature sensor (11H) is installed on the inner wall of the I coil (1I), and the I temperature sensor (11I) is installed on the inner wall of J coil (1J), J temperature sensor (11J) is installed on the inner wall of K coil (1K), K temperature sensor (11K) is installed on the inner wall of L coil (1L), L temperature sensor (11L) ) is installed on the inner side wall of the M coil (1M). 6. The comprehensive test system for simulating deep space planet gravity field environment according to claim 1, wherein the cooling liquid circuit module comprises A cooling liquid pipeline (9A), B cooling liquid pipeline (9B), A cooling liquid pipeline Pressure pump (6A), B pressure pump (6B), A liquid level sensor and module (8A), B liquid level sensor and module (8B); The A cooling liquid pipeline (9A) leads from the top plate of the main box (4) of the test system, and is connected to the A pressure pump (6A) and extends into the constant temperature cooling tank (5A) of the constant temperature cooling bath (5); B cooling liquid pipeline The road (9B) leads from the constant temperature cooling tank (5A), and the connection B pressure pump (6B) extends from the bottom of the main box (4) of the test system to the inside thereof; The A liquid level sensor and module (8A) are composed of A liquid level sensor and A relay, which control the power supply of the A pressure pump (6A). The A liquid level sensor is installed on the top of the constant temperature cooling tank (5A). When the A liquid level sensor is used, the A pressure pump (6A) works, and when the liquid level exceeds the A liquid level sensor, the A pressure pump (6A) stops; The B liquid level sensor and the module (8B) are composed of the B liquid level sensor and the B relay, which control the power supply of the B pressure pump (6B). The B liquid level sensor is installed in the middle of the constant temperature cooling tank (5A). When the liquid level is higher than When the B liquid level sensor is used, the B pressure pump (6B) works, and when the liquid level is lower than the B liquid level sensor, the B pressure pump (6B) stops. 7. based on the synthetic test method of the simulation deep space planet gravity field environment of the described test system of claim 6, it is characterized in that: comprise the following steps: (1) Calculate the current value of each coil of the input coil group according to the strength, shape and direction of the target gravity field of the test; (2) Adjust the voltage output and current output of each constant voltage and constant current DC power supply of the coil excitation power group to zero, and turn on all the power supplies for preheating; (3) open the constant temperature cooling bath (5), set the target cooling temperature, and continue to operate until the cooling liquid temperature in the constant temperature cooling tank (5A) reaches the set target cooling temperature; (4) Turn on the temperature monitoring and alarm module, set the temperature warning value of each coil, and monitor the temperature of each coil in real time; (5) Turn on the A pressure pump (6A) and the B pressure pump (6B) at the same time, so that the constant temperature cooling tank (5A) and the cooling liquid in the main box (4) of the test system form a circulating loop, and pass through the constant temperature cooling tank (5A) Control the temperature of the cooling liquid until the temperature of the cooling liquid flowing through the constant temperature cooling tank (5A) stabilizes to the set target cooling temperature value; (6) Put the test model or test object in the test space, and complete all operations before loading the gravity field; (7) According to the input current value determined in step (1), input current to the coil group in the following order: A coil (1A)-B coil (1B)-C coil (1C)-D coil (1D)-E coil (1E)-H&I coil(1H&1I)-J&K coil(1J&1K)-F&G coil(1F&1G)-L&M coil(1L&1M); (8) Monitor the temperature of each coil in real time through the temperature monitoring and alarm module, complete the setting of the test content, and terminate the test if a temperature alarm occurs during the experiment; (9) Set the input current of each coil to zero in the following order: L&M coil (1L&1M)-F&G coil (1F&1G)-J&K coil (1J&1K)-H&I coil (1H&1I)-E coil (1E)-D coil (1D) -C Coil (1C)-B Coil (1B)-A Coil (1A), then turn off all power to the coil excitation power pack; (10) Continue to run the constant temperature cooling bath (5) to cool down the coil group, monitor the temperature value of each coil until it reaches room temperature, and the temperature value of the cooling liquid in the constant temperature cooling tank (5A) is also stable below room temperature; (11) First close the A pressure pump (6A) and the B pressure pump (6B), then close the constant temperature cold bath (5), and finally close the temperature monitoring and alarm module, and the test is over.

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