CN101303038B - Intelligent air discharge system for hydraulic system pump front low-pressure end - Google Patents
Intelligent air discharge system for hydraulic system pump front low-pressure end Download PDFInfo
- Publication number
- CN101303038B CN101303038B CN2008100625430A CN200810062543A CN101303038B CN 101303038 B CN101303038 B CN 101303038B CN 2008100625430 A CN2008100625430 A CN 2008100625430A CN 200810062543 A CN200810062543 A CN 200810062543A CN 101303038 B CN101303038 B CN 101303038B
- Authority
- CN
- China
- Prior art keywords
- buoy
- outlet valve
- control module
- pump
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
本发明公开了一种用于液压系统泵前低压端的智能排气系统，包括泵，泵前低压端设有手动排气口，一个设置在高于泵且低于储液箱位置的储气容器，储气容器与所述手动排气口连接，储气容器上设有排气口，排气口连接有排气阀，储气容器内设有高低液面传感器，排气阀和高低液面传感器连接控制模块，控制模块连接有监控指示模块和故障指示模块。本技术方案利用空气比重比液体轻，可以将泵前低压回路中的空气集中收集到储气容器，并可以根据储气情况自动排气，避免了人工定期的盲目手动排气，大大减少了工作人员接触高危设备和高危环境的接触次数，可极大地降低重大事故的事故率。
The invention discloses an intelligent exhaust system for the low-pressure end before the pump of a hydraulic system, which comprises a pump, a manual exhaust port is arranged at the low-pressure end before the pump, and an air storage container arranged at a position higher than the pump and lower than the liquid storage tank , the gas storage container is connected with the manual exhaust port, the gas storage container is provided with an exhaust port, the exhaust port is connected with an exhaust valve, the gas storage container is provided with a high and low liquid level sensor, the exhaust valve and the high and low liquid level The sensor is connected with the control module, and the control module is connected with a monitoring indicating module and a fault indicating module. This technical scheme utilizes that the specific gravity of air is lighter than that of liquid, so that the air in the low-pressure circuit in front of the pump can be centrally collected into the gas storage container, and it can be automatically exhausted according to the gas storage situation, avoiding manual and regular blind manual exhaust, which greatly reduces the work The number of times people come into contact with high-risk equipment and high-risk environments can greatly reduce the accident rate of major accidents.
Description
Technical field
The invention belongs to the hydraulics field, particularly relate to a kind of intelligent vent systems that is used for the preceding low tension loop exhaust of pump.
Background technique
In hydraulic system, the hydraulic medium in the low pressure liquid tank often contacts with air, when hydraulic medium flows in oil hydraulic circuit, often the air of trace is brought into; Especially when the oil hydraulic pump periodic duty, more be prone to air is brought in the hydraulic medium; This will make in the high tension loop of oil hydraulic pump and cause the gas-liquid mixed phase, be prone to make high tension loop pressure unstable, cause the motion of power mechanism unstable; In stable, the safe and reliable important system of needs, possibly cause serious accident.For example high-voltage electric power system, the high-risk environmental system of petrochemical industry etc.Be that a high position at oil hydraulic pump low pressure liquid feeding end is provided with a manual relief opening mostly in the existing technology,, have problems such as Security and poor reliability by manual regular inspection and exhaust.Hydraulic mechanism with high-voltage electric power system is the problem that the example explanation exists below.
Circuit breaker in the electric power system generally adopts the hydraulic mechanism transmission, and some import primary cut-out especially uses comparatively generally at present in national electric power system, sees from whole use condition, belongs to high quality of products.But best product does not have perfection to say yet; From the use of recent years, find; 500KV 3AT and 220KV3AQ1 circuit breaker hydraulic mechanism are suppressed abnormal defective even has generation, and the phenomenon of expression mainly is to suppress frequent perhaps building to press unsuccessful causing to suppress overtime alarm, has accident potential.
In the process of 500KV 3AT and 220KV 3AQ1 circuit breaker actual motion; The situation that oil pump turns round or frequently makes pump continuously takes place through regular meeting; This moment, the oil pressure of switch hydraulic system can maintain a relatively low stress level; After closing the power supply of oil pump, the oil pressure value of hydraulic system can remain unchanged.The time that this situation takes place generally is to be many in the morning in the temperature difference big season, and perhaps equipment combines maintenance, and motor power cuts off when resuming operation more than 24 hours again and takes place.Inspection and disposing condition comprehensive analysis through the scene: the basic reason that causes problem to produce is to have air to exist in the oil pump piston, from sound, also can recognize oil pump idle running.It mainly is high-voltage switch gear after operation a period of time that air is arranged in the oil pump piston, and the leakage of hydraulic system trace causes having gathered certain gas in the inside of oil pump low-pressure section and part high pressure oil system (energy storage tube and high-voltage oil cylinder).Because the existence of gas; Oil pump can not output to high-pressure section with hydraulic oil from low-pressure section effectively; And then the oil pump continuous running appears; But the situation that oil pressure can not raise, oil pump also can take place owing to the hydraulic oil self-lubricating function is weakened the electrical failure (contactor burns) or the mechanical failure problems such as (oil pump damages) that cause being correlated with by gas simultaneously.
The continuously running or frequently make pump and defective that oil pressure can not raise of primary cut-out generation oil pump; Can bring very big threat to the normal operation of circuit breaker; The process that the lasting generation of defective is not handled or the maintainer does not have a power failure handles defective all possibly cause circuit breaker to stop labour; Reliable operation and users that consequent direct result will influence electrical network have a power failure, and the power transformating and supplying facility reliability index of power grid enterprises is also brought very adverse effect.
The processing method of this type defective is that oil hydraulic circuit is carried out effective exhaust, after hydraulic oil refills oil pump piston, just can make working well of oil pump.Processing mode has two kinds at present, the irregular inspection equipment of the first, and under situation about not having a power failure, regularly carry out once artificial exhaust to all hydraulic mechanism oil pumps every year, and step is: the electric power switch of closing oil pump loop; Exhaust screw on the oil pump is unclamped, and remain on the state that unclamps, when the oil of discharging does not have bubble, tighten Exhaust screw; Electric power switch closes.
This work is fairly simple, and workload is also little, and equipment does not need to have a power failure, and purpose is the portion gas that excludes in the oil hydraulic circuit, makes the time that defective occurs obtain prolonging.But there is following subject matter in this mode: bigger potential safety hazard is arranged when 1) working, if brush up against inner other components and parts of switching mechanism case in the work, will cause the switch malfunction, thereby possibly cause the consequence of large-area power-cuts; 2) artificial exhaust labor maintenance strength, and can't thoroughly eliminate and suppress overtime defective, the time lengthening that this defective is taken place, overtime defective is just suppressed in the just artificial exhaust of actual often generation after one month.
Second kind of processing mode is: equipment is stopped labour, hydraulic system is carried out exhaust, step is:
A) oil pump to circuit breaker carries out exhaust: close the motor power of oil pump loop, the oil pressure of hydraulic system is discharged to zero-pressure; Venting plug on the oil pump is unclamped, remain on the state that unclamps, when the oil of discharging does not have bubble, tighten venting plug; The electric power switch that closes lets oil pump dally about 5 minutes (release this moment bolt remains on depressurization phase); Repeatedly above step 2 is to 3 times, exhaust, oil pump idle running, no gas discharge in the pump housing; Close the oil pump bleeder screw, the motor power that closes, the preliminary filling pressure of inspection nitrogen energy storage tube gas; After storage is pressed onto normal pressure, deciliter circuit breaker 2 to 3 times; Release is checked to have or not gas to exist in the oil pump once more.
B) hydraulic system release is to energy storage tube, oil hydraulic cylinder and the exhaust of hydraulic locking device (oil pump idle running), till the hydraulic oil that the relevant relief opening with other of cylinder body energy storage tube relief opening flows out does not have bubble.
C) after exhaust finishes, the nitrogen preliminary filling pressure of inspection nitrogen energy storage tube, the energy storage time that begins from zero-pressure and the pressure after deciliter branch operation and energy storage time again.
This work is relatively complicated, but can the gas in the oil hydraulic circuit be drained basically, but the retention time soon, records at most according to practical experience and can only keep for 1 year.Though the exhaust effect of this mode is better, need to have a power failure and handle, for power equipment, frequent power failure will cause social and network system and have a strong impact on, and technical requirements is higher in real work, complicated operation.Exhaust needs oil pipe to connect, and connects improper meeting and causes a small amount of hydraulic oil flow to go out the possibility of fuel tank, so need the hydraulic oil of a spot of same numeral of preparation, producer to replenish; The shutoff screw that is also noted that relief opening simultaneously is the red copper material, twists into two parts easily.
Summary of the invention
In order to solve effectively, thoroughly, easily in the hydraulic system owing to low voltage terminal before the pump produces the problem that gas causes equipment failure, guarantee the proper functioning of hydraulic system, the purpose of this invention is to provide a kind of intelligent venting gas appliance that is used for low voltage terminal before the hydraulic system pump; Be arranged on the position that is higher than pump and is lower than liquid tank, be connected, utilize the principle of gas ratio liquid light with low voltage terminal before the pump; Gas is imported in the venting gas appliance; Air in can the centralized collection low tension loop, and automatic vent are according to circumstances avoided the manual exhaust of blindness of manual regular; Significantly reduce the staff and contact the frequency of exposure of high-risk equipment and high-risk environment; Can greatly reduce the accident rate of major accident, both improve job security, the reliability of equipment, improve operator's labour productivity and production safety again.
In order to reach above-mentioned purpose, the technological scheme below the present invention has adopted:
A kind of intelligent vent systems that is used for the preceding low voltage terminal of hydraulic system pump; Comprise pump, low voltage terminal is provided with manual relief opening before the pump, and one is arranged on the air container that is higher than pump and is lower than the liquid tank position; Air container is connected with said manual relief opening; Said air container is provided with relief opening, and relief opening is connected with outlet valve, is provided with the height liquid level sensor in the said air container; Said outlet valve and height liquid level sensor link control module, said control module is connected with monitoring indicating module and failure indication module.
As preferably; Above-mentioned height liquid level sensor comprises the mounting rod that vertically is located in the air container, and the mounting rod sky puts buoy and following buoy, and mounting rod is provided with last buoy and following buoy are limited in mobile limit structure in two sections up and down of mounting rod respectively; Wherein, The said buoy of going up is equipped with magnetic part with floating downward to put on, and said mounting rod is provided with upper sensor and the lower sensor that whether buoy and following buoy put in place on the sensing respectively, and these two sensors connect said control module.Adopt the height liquid level sensor of this kind structure, can effectively differentiate the air quantity in the air container first; Second running state that can real-time monitoring system can effectively be distinguished sensor fault or other system fault, and timely alarm; Three simple in structure easy to make.
Above-mentioned control module is carried out according to following steps:
Step 4 is returned step 2 and is continued to carry out.
The employing above-mentioned steps is carried out, and the system that can realize is according to the good automatic vent of the air in the air container, and has self-monitoring and deixis.
Above-mentioned monitoring indicating module and failure indication module are the acousto-optic indicating circuit.
Above-mentioned outlet valve is a solenoid valve, and said outlet valve is connected with forces manual air discharge cook.Being provided with and force manual air discharge cook, is to consider that strong magnetic disturbance is more serious in the Environmental Conditions of this system, can partly break down at control circuit like this and can't open under the situation of outlet valve manually opened outlet valve exhaust.
State to above-mentioned outlet valve is monitored, and can be that control module is judged according to detected liquid level change of state situation, also can be that an exhaust monitoring sensor independently is set on above-mentioned outlet valve, and the exhaust monitoring sensor connects said control module.
Above-mentioned air container is connected with pump through flexible pipe.
Above-mentioned air container sidewall is provided with the liquid level viewing window.
The present invention is owing to adopted above technological scheme; Utilize air specific weight to compare liquid light; Can be with the air centralized collection in the low tension loop before the pump to air container; Outlet valve is opened when liquid level sensor perception liquid level is lower than setting height, utilizes liquid road height pressure reduction automatic vent, and liquid level raises automatically; After the exhaust, exhaust valve closure when liquid level sensor perception liquid level reaches setting height.This device can be according to gas storage situation automatic vent; Avoided the manual exhaust of blindness of manual regular; Significantly reduce the staff and contacted the frequency of exposure of high-risk equipment and high-risk environment; Can greatly reduce the accident rate of major accident, both improve job security, the reliability of equipment, improve operator's labour productivity and production safety again.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the program flow diagram of control module.
Fig. 3 is an electrical principle block diagram of the present invention.
Fig. 4 is the structural representation of height liquid level sensor.
Embodiment
Do a detailed explanation below in conjunction with the accompanying drawing specific embodiments of the invention.
Embodiment 1:
A kind of intelligent vent systems that is used for the preceding low voltage terminal of hydraulic system pump as shown in Figure 1 comprises pump 1, and low voltage terminal is provided with manual relief opening 2 before the pump 1; Comprise that also is arranged on an air container 5 that is higher than pump 1 and is lower than the liquid tank position; Air container 5 is connected with said manual relief opening 2, and said air container 5 is provided with relief opening 6, and relief opening 6 is connected with outlet valve 7; Be provided with height liquid level sensor 8 in the said air container 5; As shown in Figure 3, above-mentioned outlet valve 7 and height liquid level sensor 8 link control modules 9, above-mentioned control module 9 is connected with monitoring indicating module and failure indication module.
Present embodiment is used for example with native system in high-voltage electric power system; As shown in Figure 4; Said height liquid level sensor 8 comprises the mounting rod 81 that vertically is located in the air container 5, and mounting rod 81 sky put buoy 82 and following buoy 83, and mounting rod 81 is provided with last buoy 82 and following buoy 83 are limited in mobile limit structure in two sections up and down of mounting rod 81 respectively; Wherein, Said going up on buoy 82 and the following buoy 83 is equipped with magnetic part, and said mounting rod 81 is provided with upper sensor and the lower sensor that whether buoy 82 and following buoy 83 put in place on the sensing respectively, and these two sensors connect said control module 9.As shown in Figure 4, come-up is marked in the A1-A2 and moves, and floats downward to be marked in the B1-B2 and moves, and wherein, A1, B1 are respectively buoy and the target upper limit of floating downward, and A2, B2 are respectively buoy and float downward the target lower limit.
Above-mentioned monitoring indicating module and failure indication module be the acousto-optic indicating circuit for being made up of LED and sounding device all.Above-mentioned outlet valve 7 is a solenoid valve, can direct controlled module 9 controls open and close, and also can be that controlled module 9 realizes opening and closing through certain exhaust control circuit or mechanism, and above-mentioned outlet valve 7 be connected with the manual air discharge cook of pressure.Above-mentioned outlet valve 7 is provided with the exhaust monitoring sensor, and the exhaust monitoring sensor connects said control module 9.Above-mentioned air container 5 is connected with pump 1 through flexible pipe 3, to avoid the influence of vibration of pump.Above-mentioned air container 5 sidewalls are provided with liquid level viewing window 4.
As shown in Figure 2, above-mentioned control module 9 is carried out according to following steps:
Step 4 is returned step 2 and is continued to carry out.
Claims (6)
1. an intelligent vent systems that is used for the preceding low voltage terminal of hydraulic system pump comprises pump (1), and the preceding low voltage terminal of pump (1) is provided with manual relief opening (2); It is characterized in that; Comprise that also is arranged on an air container (5) that is higher than pump (1) and is lower than the liquid tank position, air container (5) is connected with said manual relief opening (2), and said air container (5) is provided with relief opening (6); Relief opening (6) is connected with outlet valve (7); Be provided with height liquid level sensor (8) in the said air container (5), said outlet valve (7) and height liquid level sensor (8) link control module (9), said control module (9) is connected with monitoring indicating module and failure indication module; Wherein, Said height liquid level sensor (8) comprises the mounting rod (81) that vertically is located in the air container (5); Mounting rod (81) sky puts buoy (82) and following buoy (83); And mounting rod (81) is provided with last buoy (82) and following buoy (83) is limited in the limit structures that move in two sections up and down of mounting rod (81) respectively, and wherein, said going up on buoy (82) and the following buoy (83) is equipped with magnetic part; Said mounting rod (81) is provided with upper sensor and the lower sensor that whether buoy (82) and following buoy (83) put in place on the sensing respectively, and these two sensors connect said control module (9); Said control module (9) is carried out according to following steps:
Step 1, system initialization;
Step 2 is read in the state of buoy (82) and following buoy (83); When detecting buoy (82) and following buoy (83) and all arrived upper limit, control module (9) is closed outlet valve (7);
When detecting buoy (82) and following buoy (83) and all arrived lower limit, control module (9) is opened outlet valve (7); When detecting that buoy (82) has arrived lower limit and buoy (83) is when arriving upper limit down, control module (9) is opened outlet valve (7); When detecting that buoy (82) has arrived upper limit and buoy (83) is when arriving lower limit down, control module (9) is closed outlet valve (7), and failure indication module indication sensor fault;
Step 3 is read in outlet valve (7) state; Open outlet valve (7) and detect outlet valve (7) when opening when control module (9) instruction, the monitoring indicating module is indicated in the exhaust; Open outlet valve (7) and detect outlet valve (7) when not opening when control module (9) instruction, failure indication module is indicated exhaust failure; In control module (9) instruction is closed outlet valve (7) and is detected outlet valve (7) when closing, and the indication of monitoring indicating module is monitored; Close outlet valve (7) and detect outlet valve (7) when not closing when control module (9) instruction, failure indication module is indicated exhaust failure;
Step 4 is returned step 2 and is continued to carry out.
2. a kind of intelligent vent systems that is used for the preceding low voltage terminal of hydraulic system pump according to claim 1 is characterized in that said monitoring indicating module and failure indication module are the acousto-optic indicating circuit.
3. a kind of intelligent vent systems that is used for the preceding low voltage terminal of hydraulic system pump according to claim 1 is characterized in that said outlet valve (7) is a solenoid valve, and said outlet valve (7) is connected with forces manual air discharge cook.
4. a kind of intelligent vent systems that is used for the preceding low voltage terminal of hydraulic system pump according to claim 1 is characterized in that said outlet valve (7) is provided with the exhaust monitoring sensor, and the exhaust monitoring sensor connects said control module (9).
5. a kind of intelligent vent systems that is used for the preceding low voltage terminal of hydraulic system pump according to claim 1 is characterized in that said air container (5) is connected with pump (1) through flexible pipe (3).
6. a kind of intelligent vent systems that is used for the preceding low voltage terminal of hydraulic system pump according to claim 1 is characterized in that said air container (5) sidewall is provided with liquid level viewing window (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100625430A CN101303038B (en) | 2008-06-23 | 2008-06-23 | Intelligent air discharge system for hydraulic system pump front low-pressure end |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100625430A CN101303038B (en) | 2008-06-23 | 2008-06-23 | Intelligent air discharge system for hydraulic system pump front low-pressure end |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101303038A CN101303038A (en) | 2008-11-12 |
| CN101303038B true CN101303038B (en) | 2012-07-04 |
Family
ID=40113082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100625430A Active CN101303038B (en) | 2008-06-23 | 2008-06-23 | Intelligent air discharge system for hydraulic system pump front low-pressure end |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101303038B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8979021B2 (en) * | 2011-10-17 | 2015-03-17 | Easton Corporation | Hydraulic air bleed valve system |
| CN103112672B (en) * | 2013-02-01 | 2014-12-31 | 东莞市永强汽车制造有限公司 | Air-liquid supply control system and air-liquid supply control method of tank-truck flexible wave-resistant device |
| CN109911833B (en) * | 2018-11-12 | 2022-12-13 | 中航通飞研究院有限公司 | Exhaust method of passive brake system of airplane |
| CN112128172A (en) * | 2020-09-27 | 2020-12-25 | 国网辽宁省电力有限公司检修分公司 | A kind of exhaust device for low pressure side of oil pump and using method |
| CN112747012B (en) * | 2020-12-30 | 2023-07-25 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Automatic exhaust valve device and exhaust method |
| CN118811962A (en) * | 2024-08-23 | 2024-10-22 | 中国移动通信集团设计院有限公司 | Ionization water purification device and air conditioning circulating water system |
-
2008
- 2008-06-23 CN CN2008100625430A patent/CN101303038B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN101303038A (en) | 2008-11-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101303038B (en) | Intelligent air discharge system for hydraulic system pump front low-pressure end | |
| CN106731346A (en) | Self adaptation water mist dust-removing system and method | |
| CN102979070A (en) | Motor system for lifting ocean platform and load unbalance monitoring and controlling method of motor system | |
| CN110220041B (en) | Online monitoring method and system for air valve | |
| CN201255157Y (en) | Intelligent exhaust for front low-pressure end of hydraulic system | |
| CN101728063A (en) | Oil evacuation and nitrogen injection control device of oil-immersed transformer | |
| CN107178706B (en) | LNG point supply odorizing device | |
| CN210461908U (en) | Online monitoring system of air valve | |
| CN2906709Y (en) | Coal mine emulsion pump station distributed automatic control protection system based on field bus | |
| CN218624809U (en) | Exhaust valve for hydraulic system | |
| CN202678048U (en) | Pressure release device with on-line detection function | |
| CN201246601Y (en) | Automatic draining apparatus of air storage tank pressure detection | |
| CN211004532U (en) | Vehicle diesel generator set chassis fuel tank automatic replenishment protection system | |
| CN204497016U (en) | The online refueling device of load switch of transformer | |
| CN210372850U (en) | Oil pump station for thin oil sealed gas tank | |
| CN212290298U (en) | Full-automatic marine pressure water tank system | |
| CN210484258U (en) | Oil shortage alarm and automatic oil injection device for development machine | |
| CN209198954U (en) | Hydraulic pipe burst overflow control device | |
| CN213065516U (en) | Automatic drainage device for compressed air storage tank of air compressor | |
| CN2911755Y (en) | Automatic control protection system of coal mine emulsion pump station based on single chip microcomputer | |
| CN209876060U (en) | Automatic bleeding valve | |
| CN114923025A (en) | Fault state automatic monitoring and self-repairing voltage regulator and its fault determination method | |
| CN116221002B (en) | Oil-line oil-mixing judging method for switch cavity oil circuit of guide vane servomotor of large-scale hydroelectric generating set | |
| CN217016557U (en) | Liquid seal structure for buffer tank of tail gas recovery device of online analysis system | |
| CN217977544U (en) | Automatic water replenishing device for deaerator water seal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE ELECTRIC NET CROP. Effective date: 20130128 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130128 Address after: 310009 No. 219, Jianguo Middle Road, Hangzhou, Zhejiang Patentee after: Hangzhou Electric Power Bureau Patentee after: State Grid Corporation of China Address before: 310009 No. 219, Jianguo Middle Road, Hangzhou, Zhejiang Patentee before: Hangzhou Electric Power Bureau |