CN202502222U - Testing device for sudden-change pressure relay - Google Patents
Testing device for sudden-change pressure relay Download PDFInfo
- Publication number
- CN202502222U CN202502222U CN201220124263XU CN201220124263U CN202502222U CN 202502222 U CN202502222 U CN 202502222U CN 201220124263X U CN201220124263X U CN 201220124263XU CN 201220124263 U CN201220124263 U CN 201220124263U CN 202502222 U CN202502222 U CN 202502222U
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- CN
- China
- Prior art keywords
- pressure relay
- calibration equipment
- mutation
- mutation pressure
- sudden
- 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.)
- Expired - Lifetime
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Abstract
The utility model relates to a testing device for a sudden-change pressure relay. The testing device comprises a parameter input device, a pre-pressure control device, a pressure sensor measuring device, an action recording instrument and a result output device which are connected in sequence. Compared with the prior art, the utility model has the advantages of simple device, easy operation, high detection accuracy rate, and the like.
Description
Technical field
The utility model relates to a kind of calibration equipment, especially relates to a kind of mutation pressure relay calibration equipment.
Background technology
For adapting to the needs of Chinese national economy high speed development, the transformer of a large amount of high voltage large capcities gets into the down town in recent years.Because the singularity of urban electricity supply, to these transformer securities require increasingly highly, especially the anti-explosion ability of transformer wants high.Because of in case the economic loss that not only causes on fire of the transformer explosion in the city is very big, can cause bigger social influence simultaneously, therefore prevent the failure transformer explosion on fire be the common requirement of each transformer production factory and electric industry department.Especially under the abominable situation of transformer running environment nowadays, only depend on and improve transformer self antiknock and split the explosion problem that ability solves failure transformer and can't carry out the initial failure prevention fully.At this moment, the application of mutation pressure protection is to the raising of main transformer non electrical quantity protection and replenishes; With regard to on-the-spot long-time running situation, mechanism, application and the reliability of specializing in the mutation pressure protection from the technician of basic unit to Utilities Electric Co. also are short in understanding and confidence.State nets new source company Tongbai Pumped-storage Power Station 900 series mutation pressure switches of qualitrol company all has been installed on 4 main transformers; Signal has all inserted the protection loop, in the debug phase mutation pressure protection action is arranged, and at run duration mutation pressure relay the protection action does not take place all afterwards; Because the mutation pressure signal relates to the main transformer protection tripping operation; Therefore, safe and stable operation and the needs that adapt to the repair time weak point in order to ensure equipment need carry out verification to relay.
The application of mutation pressure protection at present is scarcely out of swaddling-clothes, and the principle that grass-roots unit and field technician protect mutation pressure cooperates with protection and lacks the technical support means, do not understand, dare not use.But; Through the crash analysis statistics in the whole nation and the accident case of East China Power Grid; Can see, also a lot of for the work that the protection of main transformer need be improved, and the mutation pressure relay is protected parameter as the non electrical quantity that a kind of action is sensitiveer, safe and reliable, protection domain is wider; Need us in electrical network, to use, make good use of, for the main equipment safe and reliable operation provides technical support.
The utility model content
The purpose of the utility model is exactly to provide a kind of device simple for the defective that overcomes above-mentioned prior art existence, and easy operating detects the high mutation pressure relay calibration equipment of accuracy rate.
The purpose of the utility model can realize through following technical scheme:
A kind of mutation pressure relay calibration equipment, by parameter input device, precompressed control device, pressure transducer measurement mechanism, action record appearance and as a result output unit connect and compose successively.
Described precompressed control device is provided with precompressed pump and solenoid valve.
Described action record appearance is provided with single-chip microcomputer, signal generation apparatus, signal receiving device and solenoid valve.
Described output unit as a result is provided with display and power switch.
Compared with prior art, the utility model device is simple, easy operating, and it is high to detect accuracy rate.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is elaborated.
Embodiment
A kind of mutation pressure relay calibration equipment, its structure is as shown in Figure 1, by parameter input device 1, precompressed control device 2, pressure transducer measurement mechanism 3, action record appearance 4 and as a result output unit 5 connect and compose successively.
The technical indicator of calibration equipment is a device static pressure range of control: (0～100) kPa, and the maximum speed of pressing is output as 200kPa/s, device precision 0.1%, time measurement accuracy is＜5ms.
Claims (4)
1. a mutation pressure relay calibration equipment is characterized in that, equipment by parameter input device, precompressed control device, pressure transducer measurement mechanism, action record appearance and as a result output unit connect and compose successively.
2. a kind of mutation pressure relay calibration equipment according to claim 1 is characterized in that described precompressed control device is provided with precompressed pump and solenoid valve.
3. a kind of mutation pressure relay calibration equipment according to claim 1 is characterized in that described action record appearance is provided with single-chip microcomputer, signal generation apparatus, signal receiving device and solenoid valve.
4. a kind of mutation pressure relay calibration equipment according to claim 1 is characterized in that described output unit as a result is provided with display and power switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220124263XU CN202502222U (en) | 2012-03-28 | 2012-03-28 | Testing device for sudden-change pressure relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220124263XU CN202502222U (en) | 2012-03-28 | 2012-03-28 | Testing device for sudden-change pressure relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202502222U true CN202502222U (en) | 2012-10-24 |
Family
ID=47038832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220124263XU Expired - Lifetime CN202502222U (en) | 2012-03-28 | 2012-03-28 | Testing device for sudden-change pressure relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202502222U (en) |
-
2012
- 2012-03-28 CN CN201220124263XU patent/CN202502222U/en not_active Expired - Lifetime
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121024 |