WO2014090118A1 - Directional control valve, air compression subsystem, and integrated water utilization system - Google Patents

Abstract

An integrated water utilization system, related to the technical field of water purification. The integrated water utilization system comprises a water drawing subsystem, a water treatment subsystem, an air compression subsystem, a clean water preparation subsystem, and an air power generation subsystem. The water drawing subsystem utilizes compressed air to draw water from a water source and supplies the water to the water treatment subsystem. The water treatment subsystem heats the water to acquire concentrated water and steam. The air compression subsystem utilizes the steam to compress air and stores same. The clean water preparation subsystem is for use in condensing the steam into water and in preparing same into clean water that meets a discharge standard. The gas power generation subsystem utilizes the stored compressed air for power generation.

Description

 Reversing valve, air compression subsystem and water comprehensive utilization system This application claims priority from the application number of 201210538717. 2 and 201210538696. 4 submitted by the National Intellectual Property of the People's Republic of China on December 14, 2012, and requires 2013 1 The priority of the application number of the Japanese Patent Office of the People's Republic of China on the 5th of the month is the same as the priority of the Japanese Patent Application No. 201310000952. Technical field

 The invention relates to a reversing valve, a water picking subsystem and a comprehensive utilization system, and belongs to the technical field of valves and water treatment. Background technique

 The reversing air valve in the prior art is divided into a solenoid valve, a hand valve, and a pneumatic valve, and is formally divided into two types of three-way, two-way five-way and the like. As for the sealing, most of them are sealed by rubber sealing rings, which are lacking in high pressure resistance, long-lasting resistance and oxidation resistance, and there are still problems in that the gas supply amount and the gas supply time cannot be adjusted at will.

 In addition, in the prior art, the seawater or sewage treatment process forms high pressure steam to directly form condensed water, and the high pressure steam also stores a large amount of energy, and most of the energy is not utilized, resulting in waste. Summary of the invention

 In order to overcome the technical problems existing in the prior art, the object of the present invention is to provide a reversing valve, a water picking subsystem and a water comprehensive utilization system, which are resistant to high pressure, durable and oxidation resistant. The water extraction subsystem utilizes compressed air for pumping; the water utilization system stores the energy stored in the high pressure steam through the formation of gas energy.

 In order to achieve the object of the present invention, an aspect of the present invention provides a reversing valve including a valve body, a valve body, and a valve cover disposed at both ends of the valve body and sealingly engaged with the valve body, wherein the valve body is along Axial

 360

a cylindrical cavity is disposed, and N rows of first through holes having a circular cross section are arranged in the radial direction, and each of the first through holes is M; the valve core is cylindrical and has a diameter Equal to the valve body along the axial direction

 N_ 360

The diameter of the cylindrical cavity, the spool is radially arranged with a cross-section that is mutually offset by one degree The surface is an elliptical through hole, and each row of through holes is M; when the valve core rotates in the cylindrical cavity of the valve body, part of the through hole of the valve body communicates through the through hole of the valve core, and the other through holes are made of the valve core The valve body and the valve core are both made of a wear resistant material, wherein M and N are even numbers greater than or equal to 2. Preferably, the diameter of the cross section of the first through hole is equal to the short axis length of the cross section of the through hole.

 Preferably, the valve body is further provided with a second through hole for injecting lubricating oil in the radial direction.

 Preferably, said M = 2, N = 4.

 In order to achieve the object of the present invention, another aspect of the present invention provides a water extraction subsystem comprising: an air bag pump, a first reversing valve, a second reversing valve, and a gas storage tank, wherein the air bag pump includes a container, a second container, a first air bag disposed in the first container, and a second air bag disposed in the second container, wherein the first air bag and the second air bag are alternately connected to the air tank through the first reversing valve; A container and a second container are alternately connected to the water treatment subsystem and the water source through the second reversing valve, respectively, wherein the first reversing valve and the second reversing valve employ any of the reversing valves described above.

 In order to achieve the object of the present invention, the present invention also provides a water comprehensive utilization system including a water extraction subsystem, a water treatment subsystem, an air compression subsystem, a clean water preparation subsystem, and an air power generation subsystem, the water The extraction subsystem uses the water extraction subsystem described above, the water treatment subsystem heats the water to obtain concentrated water and steam; the air compression subsystem uses steam to compress and store the air; the clean water preparation subsystem is used to condense the steam into water And make clean water that meets emission standards; the gas power generation subsystem uses the stored compressed air to generate electricity.

 Preferably, the air compression subsystem comprises an airbag air compressor, a third reversing valve, a fourth reversing valve, a medium pressure fan and a gas storage tank, wherein the airbag air compressor comprises a third container, a fourth container, and is disposed at a third airbag in the third container and a fourth airbag disposed in the fourth container, the fan and the air tank are alternately connected to the third airbag and the fourth airbag through the third reversing valve, respectively; the third container and the fourth container The fourth reversing valve is alternately connected to the high pressure steam source and the clean water preparation subsystem, wherein the third reversing valve and the fourth reversing valve are the reversing valves described in any of the above.

 Wherein, the water is sea water or sewage.

 Preferably, the gas power generation subsystem comprises a gas turbine generator, and the gas turbine generator uses the compressed air stored in the gas storage tank to decompress the pressure reducing valve to generate electricity.

Compared with the prior art, the valve body and the spool of the reversing valve are designed with wear resistant materials. It is also designed with a regular lubrication device. Therefore, it can be made durable, and high pressure can be achieved when controlling the supply pressure. If you want to adjust the air supply and air supply time, you only need to adjust, the speed motor The speed can be. Convenient. The water extraction subsystem utilizes compressed air for pumping; the water utilization system stores the energy stored in the high pressure steam through the formation of gas energy. DRAWINGS

 1A is a longitudinal cross-sectional view of the variable speed motor driven friction seal high pressure reversing air valve according to the present invention along the axis when the spool is in the first position;

 1B is a longitudinal cross-sectional view of the variable speed motor driven friction seal high pressure reversing air valve according to the present invention along the axis when the spool is in the second position;

 2A is a schematic longitudinal cross-sectional view of a spool of a reversing valve provided by the present invention; FIG. 2B is a perspective view of a spool of a reversing valve provided by the present invention;

 3A is a schematic longitudinal cross-sectional view of the valve body of the reversing valve provided by the present invention; FIG. 3B is a perspective view of the valve body of the reversing valve provided by the present invention;

 Figure 4 is a schematic view of a seawater comprehensive utilization system provided by the present invention;

 Figure 5 is a schematic view of a sewage comprehensive utilization system provided by the present invention;

 Figure 6 is a schematic view of a water extraction subsystem provided by the present invention;

 Figure 7 is a schematic illustration of an air compression subsystem provided by the present invention. detailed description

 The invention will be described in detail below with reference to the accompanying drawings.

1A is a longitudinal cross-sectional view of the variable speed motor driven friction seal high pressure reversing air valve according to the present invention along the axis when the spool is in the first position; FIG. 1B is a speed control motor driven friction seal high pressure commutation provided by the present invention; A schematic longitudinal cross-sectional view of the gas valve along the axis when the spool is in the second position. In the cross-sectional view, the through holes 14, 15, 16 and 17 of the valve body 2 are not present, and are indicated in the drawings for illustrative purposes only. As shown in FIG. 1, the electric reversing valve provided by the present invention comprises a valve body 2, a valve cover 1 and 3 which are disposed at two ends of the valve body 2 and sealingly engaged with the valve body 2, wherein one end of the valve core 18 is along The axis is provided with a shaft 5, and the speed regulating motor can drive the shaft 5 to rotate. When the shaft 5 rotates, the spool 18 can be rotated in the cylindrical cavity of the valve body 2. The valve body 2 is disposed in the radial direction with a through hole 6 having a circular cross section, a through hole 7, a through hole 8, a through hole 9, a through hole 14, a through hole 15, a through hole 16 and a through hole 17, wherein the through hole 6 And the through hole 7 is symmetrical about the axis AB, and the through hole 8 and the through hole 9 are line symmetrical about the axis AB, through? L 14 and the through hole 15 are symmetrical about the axis AB, and the through hole 16 and the through hole 17 are symmetrical about the axis AB. The valve body 18 is provided along the axis with a through hole 10 having an elliptical cross section, a through hole 11, a through hole 12, and a through hole 13. The diameter of the circle is equal to the short axis length of the ellipse. The spool 18 is in the cylindrical cavity of the valve body 2 When the body rotates to a certain position, the through hole 6 and the through hole 7 communicate with each other through the through hole 10, and the through hole 16 and the through hole 17 communicate with each other through the through hole 12; the through hole 8 and the through hole 9 are blocked by the valve core, the through hole 14 and The through hole 15 is blocked by the valve core 18; when the spool 18 is rotated to another position in the cylindrical cavity of the valve body 2, the through hole 8 and the through hole 9 communicate through the through hole 13, and the through hole 14 and the through hole 15 pass through The through holes 11 are in communication. The through hole 6 and the through hole 7 are blocked by the spool 18, and the through hole 16 and the through hole 17 are blocked by the spool.

 3A is a schematic longitudinal cross-sectional view of the valve body of the reversing valve provided by the present invention; FIG. 3B is a perspective view of the valve body of the reversing valve provided by the present invention. As shown in FIG. 3A, the valve body 2 of the reversing valve is provided with a cylindrical cavity in the axial direction, and four rows of through holes 6 , 8 , 15 , 17 having a circular cross section at 90 degrees in the radial direction are disposed. , 7, 9, 14 and 16, wherein the through holes 6 and 8 are the first row, the through holes 15 and 17 are the second row, the through holes 7 and 9 are the third row, and the through holes 14 and 16 are the fourth row That is, there are 2 through holes per row, and the first, second, third and fourth rows of through holes are mutually offset by 90 degrees. The valve body 2 is also provided with three oil filling holes, which are arranged in the third row.

 2A is a schematic longitudinal cross-sectional view of the spool of the reversing valve provided by the present invention; FIG. 2B is a perspective view of the spool of the reversing valve provided by the present invention. As shown in FIG. 2A, the valve core has a cylindrical shape, and the diameter thereof is equal to the diameter of the cylindrical cavity disposed in the axial direction of the valve body 2. The valve body 2 and the valve core are made of wear-resistant materials. When the spool is driven to rotate in the cavity of the valve body 2, it is sealed according to the friction of the valve core and the valve body 2. The valve core is provided with two rows of through holes 10, 11, 12 and 13 having elliptical cross sections which are mutually offset by 90 degrees in the radial direction, the through holes 10 and 11 being the first row, and the through holes 12 and 13 being the second. The first row and the second row of through holes are perpendicular to each other.

 Fig. 4 is a schematic view showing the seawater comprehensive utilization system of the present invention. Fig. 5 is a schematic view showing the sewage utilization system of the present invention. As shown in Figures 4 and 5, the seawater or sewage comprehensive utilization system provided by the present invention includes a seawater or sewage extraction subsystem, a seawater salt production subsystem or a sewage treatment subsystem, an air compression subsystem, a drinking water preparation subsystem, and a hair supply system. An electronic system, the water extraction subsystem is configured to supply seawater to a seawater salt production subsystem or to provide sewage to a sewage treatment subsystem, and the seawater salt production subsystem is used to heat seawater to form salt and high pressure steam, sewage treatment subsystem The system is used for heating sewage to form concentrated sewage and high pressure steam (the pressure of the high pressure steam is more than 10 times of the standard atmospheric pressure); the air compression subsystem compresses the air (normal pressure) by high pressure steam to form high pressure air and stores it. The drinking water preparation subsystem is used to condense high pressure steam into water and make the condensed water into drinking water; the power generation subsystem uses the stored high pressure air to generate electricity.

 The seawater salt production subsystem includes a high-frequency gasifier and a salt pool. The high-frequency vaporizer heats the seawater to generate high-pressure steam and concentrated seawater, and the concentrated seawater is discharged into a salt pond for drying to form a finished salt.

The sewage treatment subsystem includes an intermediate frequency vaporizer and a sludge tank, wherein the intermediate frequency vaporizer adds sewage The hot water generates high-pressure steam and concentrated sewage, and the sludge tank is used for storing concentrated sewage and evaporating water in the concentrated sewage to form a sludge cake, which can be treated as a fertilizer for crops. If the sewage is wastewater from a steel mill, the sewage contains a large amount of metal. After the water is evaporated, many metal particles are left. Thus, we can recover the metal. The working principle of the intermediate frequency vaporizer is: winding the intermediate frequency coil in the outer rotation of the stainless steel cylinder. When the intermediate frequency voltage is applied to the intermediate frequency coil, a vortex is generated in the stainless steel cylinder to rapidly vaporize the water flowing into the stainless steel cylinder.

 The drinking water preparation subsystem comprises a condenser, a distilled water water container and a mineralizer, wherein the condenser condenses the high pressure steam into distilled water and stores it in a distilled water water container, and the distilled water passes through the mineralizer to benefit the human body. Dissolved in distilled water to form water for human consumption.

 The power generation subsystem includes a low-pressure gas turbine generator, and the high-pressure air of the second high-pressure gas storage tank is depressurized by the pressure reducing valve to form low-pressure air, and the low-pressure gas turbine generator uses the gas energy stored by the low-pressure air to generate electricity.

Figure 6 is a schematic illustration of a water extraction subsystem provided by the present invention. As shown in FIG. 6, the water extraction subsystem includes a bladder pump 28, a first reversing valve 26, a second reversing valve 27, and a first high pressure gas storage tank, wherein the air bag pump 28 includes a first container 31, a second container 32, a first air bag 33 disposed in the first container 31, and a second air bag 34 disposed in the second container 32. The upper end of the first container 31 is provided with a tee, one end of the tee and the first end The airbags 33 are connected to each other, and the other ends are respectively connected to the intake pipe and the exhaust pipe. The bottom of the first container 31 is provided with a first inlet pipe, and the first inlet pipe is provided with a first one-way inlet valve; The side wall of the container 31 is provided with a first outlet pipe, and the first outlet pipe is provided with a first one-way water outlet valve; the upper end of the second container 32 is provided with a three-way, one end of the three-way is connected with the second air bag 34, The other ends of the second container 32 are respectively provided with a second inlet pipe, and the second inlet pipe is provided with a second one-way inlet valve; the second container 32 is provided with a second one-way inlet valve; A second outlet pipe is disposed, and a second one-way outlet valve is disposed at the second outlet pipe. The intake pipe communicating with the second air bag 34 is connected to the through hole 6 of the valve body 2 of the first reversing valve 26, and the exhaust pipe of the high pressure gas storage tank is connected to the through hole of the valve body 2 of the first reversing valve 26. 7. The exhaust pipe communicating with the second air bag 34 is connected to the through hole 14 of the valve body 2 of the first reversing valve 26. The intake pipe communicating with the first air bag 33 is connected to the through hole 8 of the valve body 2 of the first reversing valve 26, and the exhaust pipe of the high pressure gas storage tank is connected to the through hole of the valve body 2 of the first reversing valve 26. 9. The exhaust pipe that communicates with the first air bag 33 is connected to the through hole 16 of the valve body 2 of the first reversing valve 26. The water inlet pipe communicating with the second container 32 is connected to the through hole 8 of the valve body 2 of the second switching valve 27, and the seawater or the sewage source is connected to the through hole 9 of the valve body 2 of the second switching valve 27 via the water pipe. The drain pipe communicating with the second container 32 is connected to the through hole 16 of the valve body 2 of the second switching valve 27, and the high frequency or intermediate frequency gasifier is connected to the through hole 17. Will be with the first container 31 communicating inlet pipe is connected to the through hole 6 of the valve body 2 of the second reversing valve 27, and the seawater source or the sewage source is connected to the through hole 7 of the valve body 2 of the second reversing valve 27 via the water pipe, and the second The drain pipe connected to the container 32 is connected to the through hole 14 of the valve body 2 of the second switching valve 27, and the high frequency gasifier is also connected to the through hole 15. When the spool 18 of the first reversing valve 26 rotates within the valve body 2, the first air bag 33 and the second air bag 34 are alternately communicated with the first high pressure gas storage tank through the first reversing valve 26; When the spool 18 of the valve 27 rotates within the valve body 2, the first container 31 and the second container 32 alternately communicate with the high frequency gasifier or the intermediate frequency gasifier and the seawater or sewage source through the second reversing valve 27. In this way, seawater or sewage is pumped into a high-frequency gasifier or a sewage intermediate gasifier.

Figure 7 is a schematic illustration of an air compression subsystem provided by the present invention. As shown in FIG. 7, the air compression system includes an air bag air compressor, a third reversing valve 20 and a fourth reversing valve 21, a medium pressure fan and a second high pressure air tank, that is, a compressed air tank, wherein the air bag air compression The machine includes a third container 23, a fourth container 25, a third air bag 22 disposed in the third container 23, and a fourth air bag 24 disposed in the fourth container 25. The upper end of the third container 23 is provided with a tee A, One end of the three-way A is in communication with the third air bag 22, and the other ends are respectively connected to the intake pipe and the exhaust pipe; the lower end of the third container 23 is provided with a three-way B, one end of which is connected to the third container 23, The other ends can be connected to the intake pipe (or inlet pipe) and the exhaust pipe (or drain pipe), respectively. The upper end of the fourth container 25 is provided with a three-way C, one end of which is connected to the fourth air bag 24, and the other ends are respectively connected to the intake pipe and the exhaust pipe; the lower end of the fourth container 25 is provided with a tee D, One end of the three-way D is in communication with the fourth container 25, and the other ends are connected to the exhaust pipe, respectively. The third reversing valve 20 and the fourth reversing valve 21 have the same structure. As shown in FIG. 7, the intake pipe communicating with the third air bag 22 is connected to the through hole 6 of the valve body 2 of the third reversing valve 20, and the exhaust pipe of the intermediate pressure fan is connected to the valve of the third reversing valve 20. The through hole 7 of the body 2 connects the exhaust pipe communicating with the fourth air bag 24 to the through hole 14 of the valve body 2 of the third reversing valve 20, and the through hole 15 of the valve body 2 of the third reversing valve 20 passes through The second end of the tee is connected to the second high pressure gas storage tank. The intake pipe communicating with the third air bag 22 is connected to the through hole 8 of the valve body 2 of the third reversing valve 20, and the exhaust pipe of the intermediate pressure fan is connected to the through hole 9 of the valve body 2 of the third reversing valve 20. The exhaust pipe communicating with the third air bag 22 is connected to the through hole 16 of the valve body of the third reversing valve 20, and the through hole 17 of the valve body 2 of the third reversing valve 20 is connected via the second end of the tee To high pressure gas tanks. The intake pipe communicating with the fourth container 25 is connected to the through hole 8 of the valve body 2 of the fourth switching valve 21, and the exhaust pipe of the high pressure steam source is connected to the valve body 2 of the fourth switching valve 21 via the check valve. The through hole 9 connects the exhaust pipe communicating with the fourth container 25 to the through hole 16 of the valve body 2 of the fourth switching valve 21. The intake pipe communicating with the third container 23 is connected to the through hole 6 of the valve body 2 of the fourth switching valve 21, and the exhaust pipe of the middle or high frequency vaporizer is connected to the valve of the fourth switching valve 21 via the check valve. The through hole 7 of the body 2 connects the exhaust pipe communicating with the third container 23 to the fourth The through hole 14 of the valve body 2 of the reversing valve 21. The through holes 15 and 17 of the valve body 2 of the fourth reversing valve 21 are connected to both ends of a three-way via two air pipes, and the other end of the three-way is connected to the condenser by a one-way valve. The intermediate pressure fan and the gas storage tank are alternately communicated with the third air bag 22 and the fourth air bag 24 through the third reversing valve 20, respectively; the third container 23 and the fourth container 25 are alternately connected to the high pressure steam source through the fourth reversing valve 21, respectively. Connected to the clean water preparation subsystem.

 The working principle of the air compression subsystem provided by the present invention is as follows: The fourth container 25 and the third container 23 correspond to two ventricles of the human heart, the fourth air bag 24 installed at the top of the fourth container 25, and the second container 24 The third air bag 22 at the top of the three containers 23 corresponds to the two atriums of the human heart, and controls the fourth air bag 24 and the third air bag 22 to alternately contract and expand, thereby compressing the air in the air bag to the second high pressure gas storage tank. . In the 0 to the working time period, the intake pipe and the fourth air bag of the medium pressure fan 24

 4

The intake pipe is connected, the exhaust pipe of the third air bag 22 is connected to the high pressure gas tank, the fourth container 25 is connected to the condenser, the third container 23 is connected to the intermediate frequency vaporizer, and the air is charged through the medium pressure fan. The fourth air bag 24, the steam discharged from the intermediate frequency vaporizer is charged into the third container 23, and when the fourth air bag 24 is filled with air, the third system switching valve 20 and the fourth reversing valve 21 are controlled to be commutated, that is, the work is completed. Time period, medium

 4 2

The intake pipe of the air blower is connected to the intake pipe of the third air bag 22, the exhaust pipe of the fourth air bag 24 is connected to the high pressure gas tank, the third container 23 is connected to the condenser, and the fourth container 25 is connected to the intermediate frequency vaporizer. The third air bag 22 is inflated by the intermediate pressure fan, and the intermediate frequency vaporizer enters the fourth container 25 through the intake pipe at the bottom of the fourth container 25. The intermediate frequency vaporizer charges the fourth container 25 with high pressure steam through the fourth reversing valve 21, and fourth The air of the air bag 24 is squeezed, and is charged into the second high-pressure air tank through the third reversing valve 20. When the air in the third air bag 22 is full and the fourth air bag 24 is fully retracted, the third reversing valve is controlled. 20 and the fourth reversing valve 21 act, that is, the intake pipe of the medium pressure fan during the working period

 twenty four

Connected to the intake pipe of the fourth air bag 24, the exhaust pipe of the third air bag 22 is connected to the second high pressure gas storage tank, the fourth container 25 is connected to the condenser, and the third container 23 is connected to the intermediate frequency vaporizer, and passes through The medium pressure fan charges the air into the fourth air bag 24, and the steam discharged from the intermediate frequency vaporizer is charged into the third container 23, the air in the third air bag 22 is charged into the second high pressure gas storage tank, and the medium pressure fan is given to the fourth The air bag 24 is inflated, the steam in the fourth container 25 enters the condenser, and the process of repeating the work to ^ compresses the air to the first

 4 4

High pressure gas storage tank.

The working principle of the present invention has been described in detail above with reference to the drawings, but the specific embodiments are merely illustrative of the invention. The description is only for the purpose of interpreting the claims. But the protection of the present invention The circumference is not limited to the instructions. Any changes or substitutions that may be readily conceived by those skilled in the art within the scope of the present invention are intended to be included within the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the claims.

Claims

Rights request 1. A reversing valve, which includes a valve body, a valve core and a valve cover provided at both ends of the valve body and sealingly matched with the valve body. It is characterized in that the valve body is provided with a cylindrical cavity along the axial direction, and a cylindrical cavity along the diameter. Settings are opposite to each other 360 There are N rows of first through holes of I degree, and there are M first through holes in each row; the valve core is cylindrical, and its diameter N_ Equal to the diameter of the cylindrical cavity of the valve body arranged along the axial direction, the valve core is arranged with rows of 360 to each other along the radial direction. There are M through-holes in each row that are offset by I degree; when the valve core rotates in the cylindrical cavity of the valve body, some of the through-holes of the valve body are connected through the through-holes of the valve core, and other through-holes are connected by the through-holes of the valve core. Partition; The valve body and valve core are made of wear-resistant materials, where M and N are even numbers greater than or equal to 2. 2. The reversing valve according to claim 1, characterized in that the diameter of the cross section of the first through hole is equal to the minor axis length of the cross section of the through hole. 3. The reversing valve according to claim 2, characterized in that the valve body is further provided with a second through hole in the radial direction for injecting lubricating oil. 4. The reversing valve according to any one of claims 1-3, characterized in that M=2 and N=4. 5. A water extraction subsystem, characterized in that it includes: an air bag pump, a first reversing valve, a second reversing valve and a gas storage tank, wherein the air bag pump includes a first container, a second container, The first air bag is arranged in the first container and the second air bag is arranged in the second container. The first air bag and the second air bag are alternately communicated with the air storage tank through the first reversing valve; the first container and the second container are respectively The second reversing valve is alternately connected to the water treatment subsystem and the water source. The first reversing valve and the second reversing valve adopt the reversing valve described in any one of claims 1-4. 6. A comprehensive water utilization system, which includes a water extraction subsystem, a water treatment subsystem, an air compression subsystem, a clean water production subsystem and an air power generation subsystem, characterized in that the water extraction subsystem utilizes The subsystem of claim 5, the water treatment subsystem heats water to obtain concentrated water and steam; the air compression subsystem uses steam to compress atmospheric air to obtain compressed air; the clean water production subsystem is used to condense steam into water and made into clean water that meets emission standards; the gas power generation subsystem uses the stored compressed air to generate electricity. 7. The comprehensive water utilization system according to claim 6, characterized in that the air compression subsystem includes an air bag air compressor, a third reversing valve, a fourth reversing valve, a medium pressure fan and an air storage tank, , the airbag air compressor includes a third container, a fourth container, a third airbag disposed in the third container, and a fourth airbag disposed in the fourth container. The medium-pressure fan and the air storage tank are respectively reversed through the third reversing The valve is alternately connected to the third air bag and the fourth air bag; the third container and the fourth container are alternately connected to the high-pressure steam source and the clean water production subsystem through the fourth reversing valve. 8. The comprehensive water utilization system according to claim 7, wherein the water is seawater or sewage. 9. The comprehensive water utilization system according to any one of claims 6 to 8, wherein the gas power generation subsystem includes a gas turbine generator, and the gas turbine generator uses the compressed air stored in the gas storage tank to be decompressed by a pressure reducing valve. To generate electricity.