CN201301989Y - Pre-alarm pressure relief valve - Google Patents
Pre-alarm pressure relief valve Download PDFInfo
- Publication number
- CN201301989Y CN201301989Y CNU2008202197033U CN200820219703U CN201301989Y CN 201301989 Y CN201301989 Y CN 201301989Y CN U2008202197033 U CNU2008202197033 U CN U2008202197033U CN 200820219703 U CN200820219703 U CN 200820219703U CN 201301989 Y CN201301989 Y CN 201301989Y
- Authority
- CN
- China
- Prior art keywords
- pressure
- relief valve
- alarm
- pressure relief
- 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
Links
- 230000000630 rising effect Effects 0.000 abstract 1
- 239000002828 fuel tank Substances 0.000 description 10
- 238000005336 cracking Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- Safety Valves (AREA)
Abstract
The utility model provides a pre-alarm pressure relief valve, which aims to solve the technical problem that a pressure relief valve can output alarm signals only when the relief valve is moved to relieve, can not alarm before pressure in an oil tank reaches to the action value of the relief valve to prompt hidden dangers when the pressure in the oil tank is overhigh, and can not find out, and relieve the hidden dangers to avoid accidents in advance. The pre-alarm pressure relief valve has the main point that a pressure switch is installed on the valve base of the pressure relief valve. The pre-alarm relief valve has the advantages of pressure pre-alarm function for warning people the rising risk of pressure in the oil tank to find and relieve the hidden dangers in advance, and pressure relief.
Description
Technical field
The utility model belongs to the parts or the assembly of oil-filled electric transformer, and it is installed on the fuel tank case lid or sidewall of transformer, when tank pressure meets or exceeds specified value, and a kind of device that oil tank of 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.The structure of pressure relief valve is: valve seat, membranous disc, spring, valve bonnet and stage clip pad, marker post and electrical switch etc. that seal ring is housed.Its deficiency is: this pressure relief valve only could output alarm signal when its releases, and can not when tank pressure does not reach the working value of relief valve, shift to an earlier date pre-alarm, hidden danger is found, removed to the too high hidden danger that exists of prompting tank pressure in advance, avoids the generation of accident.
Summary of the invention
For overcoming the deficiency of prior art, but the purpose of this utility model is to provide a kind of pressure relief valve of pre-alarm.
The purpose of this utility model is achieved in that it has pressure relief valve, is characterized in that: setting pressure switch on the valve seat of pressure relief valve.Pressure in the fuel tank passes to valve seat upward pressure switch by the valve seat of pressure relief valve, when the pressure in the cavity that discharges valve seat reaches the setting value of pressure switch, this pressure switch is then exported the signal of pair of switches amount, this signal is by the tenminal block on the pressure switch, and the control system that transfers signals in the control room is carried out the pre-alarm of change value of pressure.This pressure switch can independently be carried out the pressure adjustment, carries out the adjustment of its pre-alarm force value by the relief valve of different cracking pressures, makes it really play the effect of forecast.
The utility model compared with prior art, its advantage is: because this pressure relief valve seat has increased the alert parts of pressure prediction, thereby pressure relief valve is had simultaneously: 1, the alert function of pressure prediction, can predict the variation in pressure in the fuel tank in advance, when the pressure in the fuel tank rises to the setting value of pre-alarm, this valve is then exported a Pressure Alarm, and the hidden danger of depositing is searched, removed to the hidden danger that exists pressure to rise in the caution people fuel tank in advance.2, pressure release, warning function, promptly the pressure in fuel tank continues to rise, and when reaching the cracking pressure value of pressure relief valve, this pressure relief valve can discharge and report to the police equally, and the pressure in the releasing fuel tank makes it reach the safety pressure of fuel tank.
Find out that thus this early warning pressure relief valve can find in advance, forecast that tank pressure rises, the caution people check, remove the hidden danger of depositing in the fuel tank, avoid the generation of accident.
Description of drawings
Further specify the utility model below in conjunction with accompanying drawing.
Accompanying drawing is a schematic representation of the present utility model.
Embodiment
Referring to accompanying drawing, pressure switch 2 is directly installed on the valve seat 3 of pressure relief valve 1 by screw thread and sealing gasket.The valve seat of pressure in the fuel tank by pressure relief valve passes to and is installed in valve seat upward pressure switch, when the pressure in the cavity that discharges valve seat reaches the setting value of pressure switch, this pressure switch is then exported the signal of pair of switches amount, this signal output is on the body of pressure switch, tenminal block is arranged on it, and signal carries out the pre-alarm of change value of pressure by the control system that elastic cable paper is transferred in the control room.
Claims (1)
1, a kind of pre-alarm pressure relief valve, it has pressure relief valve, it is characterized in that: setting pressure switch on the valve seat of pressure relief valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202197033U CN201301989Y (en) | 2008-11-25 | 2008-11-25 | Pre-alarm pressure relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202197033U CN201301989Y (en) | 2008-11-25 | 2008-11-25 | Pre-alarm pressure relief valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201301989Y true CN201301989Y (en) | 2009-09-02 |
Family
ID=41085615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202197033U Expired - Fee Related CN201301989Y (en) | 2008-11-25 | 2008-11-25 | Pre-alarm pressure relief valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201301989Y (en) |
-
2008
- 2008-11-25 CN CNU2008202197033U patent/CN201301989Y/en not_active Expired - Fee Related
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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: 20090902 Termination date: 20161125 |