CN201215201Y - Pressure release valve capable of distance data transmission - Google Patents
Pressure release valve capable of distance data transmission Download PDFInfo
- Publication number
- CN201215201Y CN201215201Y CNU200820013668XU CN200820013668U CN201215201Y CN 201215201 Y CN201215201 Y CN 201215201Y CN U200820013668X U CNU200820013668X U CN U200820013668XU CN 200820013668 U CN200820013668 U CN 200820013668U CN 201215201 Y CN201215201 Y CN 201215201Y
- Authority
- CN
- China
- Prior art keywords
- pressure
- transformer
- oil tank
- relief valve
- valve
- 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 - Fee Related
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- Indication Of The Valve Opening Or Closing Status (AREA)
Abstract
The utility model provides a pressure relief valve capable of remote data transmission. The technical problems to be resolved comprise that the pressure protection device has no early warning function, and fault and hidden danger in the transformer oil tank can be detected and controlled timely, thereby resulting in fault enlargement in the transformer oil tank. Key points of the pressure relief valve comprise that a pressure sensor is mounted on a membrane disc, and an output end of the sensor is connected with an input end of a transmitter. The utility model has the function of early warning, and displays the pressure valve in the transformer oil tank instantaneously so as to fix the fault and hidden danger, thereby guaranteeing safe operation of the transformer. The pressure relief valve can be mounted on an oil tank cover or a lateral wall of the transformer for protection in case of pressure of the oil tank in excess of the rated valve.
Description
Technical field
The utility model belongs to the pressure protective device on the oil-filled electric transformer, and it is installed on the fuel tank case lid or sidewall of transformer, when tank pressure surpasses specified value, transformer is shielded.
Background technique
At present; what the pressure protective device of oil immersed transformer adopted is a kind of pressure relief valve; its objective is: when making the oil tank for oil immersion type transformer internal pressure surpass safety limit, be not damaged, its internal pressure is discharged for the protection oil tank of transformer because of failure and other reasons.This pressure relief valve is made up of the valve seat that seal ring is housed, membranous disc, spring, valve bonnet and stage clip pad, marker post and electrical switch etc.Its deficiency is: though the switching value that this pressure relief valve has the function that pressure discharges and output is used to report to the police when discharging, its pressure in can not the immediately monitoring fuel tank.Therefore, to the Detection ﹠ Controling in time of the potential faults in the oil tank of transformer, thereby cause the fault extension in the oil tank of transformer, as pressure relief valve fail in time to discharge or the tank pressure rate of climb faster than the release rate of pressure relief valve, pressure increase in the fuel tank causes fuel tank explosion or distortion, influences the normal operation of transformer.
Summary of the invention
Do not have the defective of warning function at above-mentioned pressure protective device, but the purpose of this utility model is to provide the pressure relief valve of the pressure protective device-remote transmission data on a kind of oil-filled electric transformer.
The purpose of this utility model is achieved in that it has valve seat, membranous disc, spring, valve bonnet, marker post, top cushion rubber, is characterized in that: a pressure transducer is installed on membranous disc, and the output terminal of sensor connects the input end of transmitter.Variation in pressure in the oil tank of transformer is by electrical signal of pressure transducer output, this signal is converted to the industrial standard current signal of 4mA～20mA by transmitter, be sent to instrument or computer in the remote control room, show the force value in oil tank of transformer this moment.Simultaneously can pass through instrument or computer settings pressure alarm value and alarm signal.And, when the pressure in the fuel tank reached the cracking pressure value of pressure relief valve, the relief valve breakdown action discharged the pressure in the fuel tank, when oil tank of transformer internal pressure during less than the closing pressure value of pressure relief valve, relief valve is reliably closed the safe operation that guarantees transformer.
The utility model compared with prior art, it has warning function, the force value in the instant playback oil tank of transformer, the hidden danger of in time fixing a breakdown guarantees the safe operation of transformer.
Description of drawings
Further specify the utility model below in conjunction with accompanying drawing.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the electrical schematic diagram of transmitter and digital display controller table.
To be transmitter be transformed to the electrical schematic diagram that inserts computer data acquiring equipment behind the voltage signal of 1～5V with the current signal of output to Fig. 3.
Embodiment
Referring to Fig. 1, it has valve seat 1, membranous disc 2, spring 3, valve bonnet 4, marker post 5 and transmitter 6 and pressure transducer 7, and pressure transducer is installed on the membranous disc.Pressure transducer 7 wherein is used to detect the pressure in the fuel tank, the input end of the output termination transmitter 6 of this pressure transducer.Pressure in this fuel tank is exported 4mA～20mA after pressure transducer and transmitter conversion industrial standard current signal is sent in the remote control room, and this signal can flow to instrument or computer carries out the demonstration and the control of pressure.Simultaneously, when the pressure in the fuel tank reaches the cracking pressure of relief valve, but the pressure in this valve releases fuel tank is to guarantee the safe operation of transformer.
Referring to Fig. 2, be the industrial standard current signal of the 4mA～20mA of transmitter output and the binding figure of digital display controller table.
Referring to Fig. 3,, just can insert computer data acquiring equipment after generally the current signal of output will being transformed to the voltage signal of 1～5V if the signal of pressure relief valve will be input to computer data acquiring and control system or other automatic controller.
Claims (1)
- But 1, a kind of pressure relief valve of remote transmission data, it has valve seat, membranous disc, spring, valve bonnet, marker post, top cushion rubber, it is characterized in that: setting pressure sensor on membranous disc, the output terminal of sensor connects the input end of transmitter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820013668XU CN201215201Y (en) | 2008-06-27 | 2008-06-27 | Pressure release valve capable of distance data transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820013668XU CN201215201Y (en) | 2008-06-27 | 2008-06-27 | Pressure release valve capable of distance data transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201215201Y true CN201215201Y (en) | 2009-04-01 |
Family
ID=40520405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820013668XU Expired - Fee Related CN201215201Y (en) | 2008-06-27 | 2008-06-27 | Pressure release valve capable of distance data transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201215201Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2784790A1 (en) * | 2013-03-28 | 2014-10-01 | ABB Technology AG | Pressure relief device for a power transformer, and related power transformer |
| CN105402480A (en) * | 2015-12-08 | 2016-03-16 | 中国西电电气股份有限公司 | Pressure relief valve |
-
2008
- 2008-06-27 CN CNU200820013668XU patent/CN201215201Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2784790A1 (en) * | 2013-03-28 | 2014-10-01 | ABB Technology AG | Pressure relief device for a power transformer, and related power transformer |
| CN105402480A (en) * | 2015-12-08 | 2016-03-16 | 中国西电电气股份有限公司 | Pressure relief valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090401 Termination date: 20160627 |