CN201293812Y - Air pressure regulation type liquid resistance load device - Google Patents
Air pressure regulation type liquid resistance load device Download PDFInfo
- Publication number
- CN201293812Y CN201293812Y CNU2008201787194U CN200820178719U CN201293812Y CN 201293812 Y CN201293812 Y CN 201293812Y CN U2008201787194 U CNU2008201787194 U CN U2008201787194U CN 200820178719 U CN200820178719 U CN 200820178719U CN 201293812 Y CN201293812 Y CN 201293812Y
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- fluid
- tank
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- compressed air
- resistance
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- Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
Abstract
A pressure regulation type fluid resistance load device relates to a generator or power supply equipment load test device, which comprises a fluid tank, a fluid resistance tank, an electrode, a fluid level sensor, a controller, a compressed air tank, an air intake valve, an exhaust valve, a compressed air tube, a pressure regulating valve, and a fluid delivery tube, wherein the fluid resistance tank is integrated with the fluid tank, while they are separated by a baffle plate and are communicated with the resistance fluid via the fluid delivery tube; the electrode and the fluid level sensor are assembled in the fluid resistance tank; the upper part of the fluid tank is communicated with the compressed air tank via the compressed air tube and an electromagnetic valve; the controller compares the value of the fluid level sensor with a preset value to control the exhaust valve and the air intake valve, to regulate the pressure of the fluid tank to change the height of the resistant fluid, thereby regulating resistance. The simple pressure regulation can simply regulate resistance, to satisfy the test demands on the electric performance of generator or power supply equipments, improve the continuity and uniformity of electric performance test, and the reliability and accuracy of test results. The pressure regulation type fluid resistance load device has high practicality and popularization value.
Description
Technical field
The utility model relates to electrical equipment performance test pull-up resistor technical field, is specifically related to a kind of liquid resistance load device, is applicable to generator or power supply kind equipment electric performance test.
Background technology
As everyone knows, when being carried out electric performance test, generator or other power supply kind equipments need provide fictitious load, the traditional analog load is the fictitious load such as solid resistor, this fictitious load is because the restriction of radiating mode, power is generally less, and general employing of this type of load equipment has level to regulate, and can not obtain accurate test findings.Therefore, can not adapt to present high-power generator or the requirement of power supply kind equipment electric performance test.At present, adopt the load of liquid resistance simulation, this load rapid heat dissipation, power can be accomplished very big, is a kind of stepless adjustable fictitious load, can avoid grade drawback of adjusting solid resistor fictitious load.When adopting liquid resistance simulation load carrying out generator or power supply kind equipment to carry out electric performance test, the adjusting of liquid resistance all adopts mechanically operated mode to change the contact area of electrode and resistor fluid, thereby changes the size of resistance value.But adopt mechanically operated mode, its gear train is comparatively complicated, is prone to all kinds of mechanical drive faults.At present, need seek the contact area of a kind of simpler, more reliable change liquid electrode and resistor fluid, be the method for purpose to reach change resistance value size.The utility model provides following technical scheme for this reason.
Summary of the invention
The purpose of this utility model is to provide a kind of air pressure adjustment formula liquid ohmic load device, and bearing power is big, regulates and easy to use, debugs complex structure, technological deficiency that failure rate is high to overcome existing machinery.
Technical solution of the present utility model is: air pressure adjustment formula liquid ohmic load device, comprise liquid reserve tank, the liquid resistance box, electrode, liquid level sensor, controller, compressed air reservoir, gas admittance valve, vent valve, compressed air hose, pressure regulator valve and catheter, the liquid resistance box is up and down with liquid reserve tank, and structure is connected one, middle separate and be communicated with resistor fluid in the case by catheter by dividing plate, electrode, liquid level sensor is fixed on liquid resistance box top, its lower end is all inserted in the resistor fluid, compressed air hose is passed through on liquid reserve tank top, vent valve and gas admittance valve are communicated with compressed air tank, controller and liquid level sensor, vent valve, gas admittance valve is connected by electric wire, and the pressurized air in the compressed air reservoir is communicated with the gas phase of liquid reserve tank.
Liquid reserve tank described in the technical solution of the present utility model is the casing of relative closure, communicates with compressed air reservoir by gas admittance valve, is communicated with atmosphere by exhausr port by vent valve, communicates by catheter and liquid resistance box.There is resistor fluid in the liquid reserve tank.
Liquid resistance box described in the technical solution of the present utility model is that a top that is communicated with liquid reserve tank by catheter is the casing of uncovered and middle placement electrode, the resistor fluid liquid level change changes the contact area of resistor fluid and electrode, thereby can change the resistance value of electrode tip.
Electrode described in the technical solution of the present utility model is a metal material, and by insulating material separately and be fixed on resistance box top, insert in the resistor fluid lower end.
Liquid level sensor described in the technical solution of the present utility model is one liquid level variable can be converted to the device of electric signal, and its effect is the liquid level in the liquid resistance box to be changed into electric signal deliver to controller.
Controller described in the technical solution of the present utility model links by electric wire and gas admittance valve and vent valve, according to the signal of liquid level sensor with data are set compare the on off state of control gas admittance valve and vent valve.
Gas admittance valve described in the technical solution of the present utility model and vent valve are solenoid valve, and it opens and closes by controller function, thus the air pressure on control liquid reserve tank top.
Compressed air reservoir described in the technical solution of the present utility model is compressed-air actuated buffering and storage device, links to each other with the external compression air source by pressure regulator valve, compressed air inlet.
Pressure regulator valve described in the technical solution of the present utility model can and be controlled in the stationary value scope gaseous tension in the gas-holder with the decompression of external compression air.
Compare with existing liquid resistance load, the beneficial effects of the utility model are: by simple pressure regulation system, the resistance of regulator solution resistance easily, satisfy the needs that generator or power supply kind equipment carry out electric performance test, improve continuity, homogeneity and reliability of testing result, the accuracy of generator or power supply kind equipment electric performance test.
Below, in conjunction with the accompanying drawings the utility model is further specified.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Among the figure: 1, liquid reserve tank, 2, catheter, 3, the liquid resistance box, 4, electrode, 5, liquid level sensor, 6, controller, 7, exhausr port, 8, vent valve, 9, gas admittance valve, 10, compressed air hose, 11, compressed air reservoir, 12, pressure regulator valve, 13, the compressed air inlet.
Embodiment
As shown in Figure 1, air pressure adjustment formula liquid ohmic load device, comprise liquid reserve tank 1, liquid resistance box 3, electrode 4, liquid level sensor 5, controller 6, compressed air reservoir 11, gas admittance valve 9, vent valve 8, compressed air hose 10, pressure regulator valve 12 and catheter 2, liquid resistance box 3 is up and down with liquid reserve tank 1, and structure is connected one, the middle resistor fluid that separates and be communicated with in the casees by catheter 2 by dividing plate, electrode 4, liquid level sensor 5 is fixed on liquid resistance box 3 tops, its lower end is all inserted in the resistor fluid, liquid reserve tank 1 is by compressed air hose 10, vent valve 8 and gas admittance valve 9 are communicated with compressed air tank 11, controller 6 and liquid level sensor 5, vent valve 8, gas admittance valve 9 is connected by electric wire.
The external compression air remains in certain pressure limit under the control of pressure regulator valve 12 by compressed air inlet 13, enter compressed air reservoir 11 through pressure regulator valve 12.Controller 6 relatively judges whether the height of resistance liquid level is suitable in the back by the signal of liquid level sensor 5 with the value of setting.When liquid level is lower than the value of setting, controller 6 is opened gas admittance valve 9, and pressurized air can enter liquid reserve tank 1 top by compressed air hose 10, and its air pressure can be risen, and when being higher than the pressure of top liquid resistance box 3, by catheter 2 resistor fluid is pressed into liquid resistance box 3.Close gas admittance valve 9 after liquid level reaches the value of setting, it is stable that liquid level keeps; When liquid level sensor 5 detects liquid level and is higher than the value of setting, open vent valve 8 by controller 6, the gas on liquid reserve tank 1 top can be got rid of by exhausr port 7, the air pressure of liquid reserve tank 1 can descend, resistor fluid is got back to liquid reserve tank 1 by catheter 2, close vent valve 8 after liquid level reaches the value of setting, it is stable that liquid level keeps; Device is controlled the liquid level height of liquid resistance box 3 by regulating liquid reserve tank air pressure, changes the contact area of resistor fluid and electrode 4, thereby changes interelectrode resistance value, satisfies the requirement of generator or power supply kind equipment electric performance test.
Although above the specific embodiment of the present invention is described; in claims institute restricted portion; the shape of liquid reserve tank and liquid resistance box and the position of solenoid valve are not limited by the open institute of the application, and all are provided with the technical scheme that the air pressure adjustment liquid level reaches change resistance value size based on design philosophy of the present invention all ought to be in protection scope of the present invention.
Claims (1)
1, a kind of air pressure adjustment formula liquid ohmic load device, it is characterized in that: this device comprises liquid reserve tank, the liquid resistance box, electrode, liquid level sensor, controller, compressed air reservoir, gas admittance valve, vent valve, compressed air hose, pressure regulator valve and catheter, the liquid resistance box is up and down with liquid reserve tank, and structure is connected one, middle separate and be communicated with resistor fluid in the case by catheter by the dividing plate sealing, the liquid resistance box is opening-like, liquid reserve tank is enclosed construction, electrode, liquid level sensor is fixed on liquid resistance box top, its lower end is all inserted in the resistor fluid, compressed air hose is passed through on liquid reserve tank top, vent valve and gas admittance valve are communicated with compressed air tank, controller and liquid level sensor, vent valve, gas admittance valve is connected by electric wire, and the pressurized air in the compressed air reservoir is communicated with the gas phase of liquid reserve tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201787194U CN201293812Y (en) | 2008-11-12 | 2008-11-12 | Air pressure regulation type liquid resistance load device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201787194U CN201293812Y (en) | 2008-11-12 | 2008-11-12 | Air pressure regulation type liquid resistance load device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201293812Y true CN201293812Y (en) | 2009-08-19 |
Family
ID=41007295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201787194U Expired - Fee Related CN201293812Y (en) | 2008-11-12 | 2008-11-12 | Air pressure regulation type liquid resistance load device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201293812Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101847478A (en) * | 2010-06-07 | 2010-09-29 | 襄樊大力电工有限公司 | Adjustable liquid resistance device and application method thereof |
| CN103163434A (en) * | 2013-03-07 | 2013-06-19 | 苏州科技学院 | Constant current discharging device for ultra-high voltage long cable after direct-current withstand voltage test |
| CN109507582A (en) * | 2018-10-10 | 2019-03-22 | 大禹电气科技股份有限公司 | Water resistance load regulating device |
| CN110729086A (en) * | 2019-08-26 | 2020-01-24 | 武汉船用机械有限责任公司 | Water resistor with adjustable resistance value |
-
2008
- 2008-11-12 CN CNU2008201787194U patent/CN201293812Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101847478A (en) * | 2010-06-07 | 2010-09-29 | 襄樊大力电工有限公司 | Adjustable liquid resistance device and application method thereof |
| CN101847478B (en) * | 2010-06-07 | 2012-01-11 | 襄樊大力电工有限公司 | Adjustable liquid resistance device and application method thereof |
| CN103163434A (en) * | 2013-03-07 | 2013-06-19 | 苏州科技学院 | Constant current discharging device for ultra-high voltage long cable after direct-current withstand voltage test |
| CN109507582A (en) * | 2018-10-10 | 2019-03-22 | 大禹电气科技股份有限公司 | Water resistance load regulating device |
| CN109507582B (en) * | 2018-10-10 | 2021-08-10 | 大禹电气科技股份有限公司 | Water resistance load adjusting device |
| CN110729086A (en) * | 2019-08-26 | 2020-01-24 | 武汉船用机械有限责任公司 | Water resistor with adjustable resistance value |
| CN110729086B (en) * | 2019-08-26 | 2021-10-08 | 武汉船用机械有限责任公司 | Water resistor with adjustable resistance value |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090819 Termination date: 20121112 |