CN203069459U - Insulator internal pressure testing device - Google Patents
Insulator internal pressure testing device Download PDFInfo
- Publication number
- CN203069459U CN203069459U CN 201220660071 CN201220660071U CN203069459U CN 203069459 U CN203069459 U CN 203069459U CN 201220660071 CN201220660071 CN 201220660071 CN 201220660071 U CN201220660071 U CN 201220660071U CN 203069459 U CN203069459 U CN 203069459U
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- hydraulic
- internal pressure
- test
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- frequency converter
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Abstract
The utility model provides an insulator internal pressure testing device. The insulator internal pressure testing device comprises an electric control device, a hydraulic system and a test bay, wherein hydraulic system comprises a medium box, a hydraulic pump, a regulation valve, a tested product and a relief valve, wherein the medium box, the hydraulic pump, the regulation valve, the tested product and the relief valve are sequentially connected through a hydraulic pipeline in a circulating way, the electric control device consists of a controller, a frequency converter and a hydraulic sensor, different output ends of the controller are respectively connected with the controlled ends of the regulation valve, the relief valve and the frequency converter, the output end of the frequency converter is connected with the power supply end of the hydraulic pump, the input end of the controller is connected with the hydraulic sensor, and the hydraulic sensor is installed on the hydraulic pipeline. The insulator internal pressure testing device has the advantages that a continuous internal pressure load which alternately varies according to a certain frequency can be output, so that the actual running condition of a product is better fitted, the check is stricter, and a test basis can be further provided for reliability of the product safely running in extreme climate areas with a large environmental temperature difference and the like for a long term; and after a tested hollow insulator is in fatigue failure, the pressure of equipment is automatically relieved rapidly, the function of emergency shut-down is also supplied, so that the safety performance is high.
Description
Technical field
The utility model relates to a kind of insulator internal pressure test device, is used for hollow combined insulator is carried out long-time internal pressure circulation (pressure alternately changes) test under different temperatures, to examine it in following fatigue lifetime of pressure alternation condition and tired failure mode.
Background technology
According to existing hollow insulator test standard, the method of pressure test is for steadily boosting, and the short time keeps step-down then, this test method can examine product at the compressive strength and the internal pressure failure mode that bear under the static load, can't realize that pressure alternately changes continuously fast.
Under the actual motion state, the residing environment temperature of hollow combined insulator can alternately change, add the heat of product generation in service, this will cause that the product air pressure inside alternately changes, the long-time situation that fatigure failure just may occur, in the big awful weather area of day and night temperature, this situation is particularly evident.And existing test method and testing equipment can't produce one continuously and the internal pressure that alternately changes by certain frequency is applied on the hollow insulator, with the performance of examination hollow insulator chronic fatigue life-span and fatigure failure.
Summary of the invention
The utility model purpose provides a kind of insulator internal pressure test device, can't realize the problem that pressure alternately changes continuously fast with what solve that existing test unit exists.
The technical solution of the utility model is: a kind of insulator internal pressure test device, comprise electric control gear, hydraulic system and test bay, the control output end of electric control gear is connected with hydraulic system, and two interfaces of the hydraulic pressure of hydraulic system are connected with the two ends of test product in being located at test bay by hydraulic line.Wherein, described hydraulic system comprises medium box, hydraulic pump, variable valve, test product and the blowdown valve that circulates successively and connect by described hydraulic line; Described electric control gear is made up of controller, frequency converter and hydraulic pressure transducer, and the different output terminals of controller are connected with the controlled end of variable valve, blowdown valve and frequency converter respectively, and the output terminal of frequency converter is connected with the power end of hydraulic pump; The input end of controller is connected with hydraulic pressure transducer, and this hydraulic pressure transducer is installed on the hydraulic line adjacent with test product.
The utility model has the advantages that:
1, the internal pressure load that can export one continuously and alternately change by certain frequency, fatigue lifetime and the fatigure failure form of examination hollow insulator under the alternation circulating pressure, the ruuning situation that meets product reality more, examine strictlyer, more can provide test basis in the big extreme climate area long-term safety reliability of operation that waits of circumstance of temperature difference for product.
2, the pressure cycling test of hollow insulator under different temperatures can be realized, maximum conditions can be simulated.
3, can dynamically show test figure, and draw real-time time-pressure waveform figure, the final test figure of storage automatically.
4, tried the hollow insulator fatigue failure after, the automatic quick pressure releasing of equipment, and be provided with emergency stop function, the security performance height.
Description of drawings
Fig. 1 is overall formation synoptic diagram of the present utility model;
Fig. 2 is concrete formation synoptic diagram of the present utility model.
Embodiment
Referring to Fig. 1～Fig. 2, a kind of insulator internal pressure test of the utility model device, comprise electric control gear A, hydraulic system B and test bay C, the control output end of electric control gear A is connected with hydraulic system B by cable 10, and two interfaces of the hydraulic pressure of hydraulic system B are connected with the two ends of test product 8 in being located at test bay C by hydraulic line 11.It is characterized in that described hydraulic system B comprises medium box 4, hydraulic pump 3, variable valve 5, the test product 7(hollow insulator that circulates successively and connect by hydraulic line 11) and blowdown valve 8, be connected to a closed circuit.Described electric control gear A is made up of controller 1, frequency converter 2 and hydraulic pressure transducer 6, and the different output terminals of controller 1 are electrically connected with the controlled end of variable valve 5, blowdown valve 8 and frequency converter 2 respectively.The output terminal of frequency converter 2 is connected with the power end of hydraulic pump 3, and controller 1 reaches the purpose of quick change test pressure by the rotating speed of frequency converter 2 control hydraulic pumps 3.The input end of controller 1 is connected with hydraulic pressure transducer 6, this hydraulic pressure transducer 6 is installed on the hydraulic line 11 adjacent with test product 7, the working pressure of online detection hydraulic system B, the pressure signal that controller 1 is carried according to hydraulic pressure transducer 6 is regulated the rotating speed of control hydraulic pump 3 automatically.Variable valve 5 and blowdown valve 8 can be single valves or be connected the valve group of forming by several valves.
Described controller 1 can adopt PLC or single-chip microcomputer.
Described test bay C is a seal cavity, and built-in temperature control device (comprising refrigeration, heating arrangement) can produce different test temperature (40 ℃～+ 100 ℃ adjustable) to simulate different environment temperatures.
The utility model is when work, and the pressure signal that the pressure transducer 6 of controller 1 collection test product 7 front ends series connection sends feeds back to frequency converter 2 and variable valve 5, and then the rotating speed of frequency converter 2 control hydraulic pumps 3, rotating speed is more fast, and test product 7 product internal pressures rise more fast, otherwise more slow.Simultaneously, after variable valve 5 and blowdown valve 8 connect the feedback signal of controller 1, control the open and close of each valve to realize maintenance or the unloading of pressure, both are in conjunction with the pulse output that can realize different wave.
Claims (3)
1. insulator internal pressure test device, comprise electric control gear, hydraulic system and test bay, the control output end of electric control gear is connected with hydraulic system, two interfaces of the hydraulic pressure of hydraulic system are connected with the two ends of test product in being located at test bay by hydraulic line, it is characterized in that described hydraulic system comprises medium box, hydraulic pump, variable valve, test product and the blowdown valve that circulates successively and connect by described hydraulic line; Described electric control gear is made up of controller, frequency converter and hydraulic pressure transducer, and the different output terminals of controller are connected with the controlled end of variable valve, blowdown valve and frequency converter respectively, and the output terminal of frequency converter is connected with the power end of hydraulic pump; The input end of controller is connected with hydraulic pressure transducer, and this hydraulic pressure transducer is installed on the hydraulic line adjacent with test product.
2. insulator internal pressure test device according to claim 1 is characterized in that, described controller adopts PLC or single-chip microcomputer.
3. insulator internal pressure test device according to claim 1 is characterized in that described test bay is equipped with temperature control equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220660071 CN203069459U (en) | 2012-12-05 | 2012-12-05 | Insulator internal pressure testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220660071 CN203069459U (en) | 2012-12-05 | 2012-12-05 | Insulator internal pressure testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203069459U true CN203069459U (en) | 2013-07-17 |
Family
ID=48768233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220660071 Expired - Lifetime CN203069459U (en) | 2012-12-05 | 2012-12-05 | Insulator internal pressure testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203069459U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994935A (en) * | 2014-04-22 | 2014-08-20 | 张卫社 | Method for detecting anti-explosion performance of cylindrical pressure air cylinder or pipeline |
| CN107367432A (en) * | 2017-08-09 | 2017-11-21 | 广州特种承压设备检测研究院 | The ageing test apparatus and life-span prediction method of PE pipelines under a kind of surge pressure |
| CN109916608A (en) * | 2019-03-15 | 2019-06-21 | 江苏神马电力股份有限公司 | The fixing tool of hollow insulator and its application |
| CN110514525A (en) * | 2019-08-29 | 2019-11-29 | 江苏神马电力股份有限公司 | A kind of interior pressure comparative test device |
-
2012
- 2012-12-05 CN CN 201220660071 patent/CN203069459U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994935A (en) * | 2014-04-22 | 2014-08-20 | 张卫社 | Method for detecting anti-explosion performance of cylindrical pressure air cylinder or pipeline |
| CN107367432A (en) * | 2017-08-09 | 2017-11-21 | 广州特种承压设备检测研究院 | The ageing test apparatus and life-span prediction method of PE pipelines under a kind of surge pressure |
| CN109916608A (en) * | 2019-03-15 | 2019-06-21 | 江苏神马电力股份有限公司 | The fixing tool of hollow insulator and its application |
| CN110514525A (en) * | 2019-08-29 | 2019-11-29 | 江苏神马电力股份有限公司 | A kind of interior pressure comparative test device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130717 |
|
| CX01 | Expiry of patent term |