CN103672143A - Safety valve pressure warning device - Google Patents
Safety valve pressure warning device Download PDFInfo
- Publication number
- CN103672143A CN103672143A CN201210352986.XA CN201210352986A CN103672143A CN 103672143 A CN103672143 A CN 103672143A CN 201210352986 A CN201210352986 A CN 201210352986A CN 103672143 A CN103672143 A CN 103672143A
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- China
- Prior art keywords
- resistance
- amplifier
- safety valve
- warning circuit
- support
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0025—Electrical or magnetic means
- F16K37/005—Electrical or magnetic means for measuring fluid parameters
Abstract
The invention discloses a safety valve pressure warning device which is characterized by comprising a support, a warner spring, a warning circuit board, a swing frame, a pressure cavity, a diaphragm, a contact piece and a substrate. The warner spring is fixed above the diaphragm, one end of the contact piece is fixed on the swing frame, the other end of the contact piece is in contact with the warning circuit board, the warning circuit board is installed on the support, the swing frame is rotatably connected with the support, the support is arranged at the top end of the substrate, a vent hole is arranged in the substrate, and the top end of the vent hole is communicated with the pressure cavity. Property damage and casualties caused by accidents can be avoided through the safety valve pressure warning device, service lives of a device and a safety valve are prolonged simultaneously, and safety reliability of the safety valve is greatly improved. The safety valve pressure warning device further has the advantages that a circuit is simple and warning sensitivity is high.
Description
Technical field
The present invention relates to a kind of warning device, particularly relate to a kind of safety valve pressure warning device.
Background technique
Safety valve is a kind of safety protection valve; its open-shut device is subject under External Force Acting in normally off; pressure medium in equipment or pipeline raises, and while surpassing specified value, automatically opens, and by discharge medium outside system, prevents that in pipeline or equipment, pressure medium surpasses specified value.Spring safety valve is widely used in height, in, in low-pressure system, spring safety valve is opened discharge pressure medium, pressure medium is released out at a high speed from flap sealed mouth, through valve port, enter in atmosphere, flow at high speed pressure medium flow is by the friction with each metal surface of valve and cash mobile, forming eddy current and pressure changes, cause the disturbance of gas, produced acrimonious and ear-piercing " whistling " sound, give people's alarm, but the noise of this superelevation decibel has brought adverse influence to around people's work and life, in addition under the interference of various device, be difficult for hearing the sound of releasing of pressure medium.
Summary of the invention
The object of the invention is to provide in order to address the above problem a kind of simple in structure, detect sensitive, safe and reliable safety valve pressure warning device.
The present invention is achieved by the following technical solutions:
A kind of safety valve pressure warning device, comprise support, alarm spring, warning circuit plate, rocker, pressure chamber, diaphragm, contact and pedestal, described alarm spring is fixed on diaphragm top, one end of described contact is fixed on described rocker, the other end contacts with warning circuit plate, described warning circuit plate is installed on described support, described rocker and support are rotationally connected, described support is arranged at described pedestal top, in described pedestal, be provided with vent, the top of described vent is communicated with described pressure chamber.
Steam enters after pressure alarm, when diaphragm experiences in pressure chamber that pressure source changes, just promotes deformation of elastic components.During pressure superpressure, diaphragm promotes one end of rocker and slides on the upper surface of diaphragm, and when contact contacts with described warning circuit plate, warning circuit plate gives the alarm.Safety valve pressure warning device can prevent property loss and the casualties that contingency brings.
Further, described warning circuit comprises power supply, pressure sensing electric bridge, the first amplifier, the second amplifier, the 3rd amplifier, alarm sound generator, numeral display floater, loudspeaker, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the first electric capacity and the second electric capacity, the power input of described pressure sensing electric bridge is connected with the power output end of described power supply, the signal output part of described pressure sensing electric bridge is connected with negative input with the electrode input end of described the first amplifier respectively, the output terminal of described the first amplifier is connected with the first end of described the first resistance, the second end of described the first resistance is connected with the first end of described the first electric capacity with the first end of described the second resistance, the second end of described the first electric capacity is connected with the electrode input end of described the 3rd amplifier with the negative input of described the second amplifier respectively, the second end of described the second resistance is connected with the electrode input end of described the second amplifier with the first end of described the second electric capacity respectively, the output terminal of described the second amplifier is connected with the signal input part of described digital display floater, the output terminal of described the 3rd amplifier is connected with the first end of the 4th resistance, the second end of described the 4th resistance is connected with the signal input part of described alarm sound generator, the signal output part of described alarm sound generator is connected with the first end of described the 3rd resistance with the signal input part of described loudspeaker respectively, the second end of described the 3rd resistance is connected with the output terminal of described digital display floater.
When the output voltage of the second amplifier reaches voltage that alarm point pre-sets when above, the 3rd amplifier output high level, alarm sound generator is removed and is resetted and starting oscillation, drives loudspeaker to sound the alarm.When the second amplifier output does not reach alarm point and when voltage is set, the 3rd amplifier is output as low level, so alarm sound generator becomes reset mode, loudspeaker is not driven.
As preferably, described warning circuit also comprises LED light, the positive pole of described LED light is inputted out end with the signal input part of described loudspeaker with the signal of described alarm sound generator and is connected, and the negative pole of described LED lamp is connected with the first end of described the 3rd resistance.
The invention has the beneficial effects as follows:
Safety valve pressure warning device can prevent property loss and the casualties that contingency brings, and has also extended the working life of equipment and safety valve simultaneously, has greatly improved the safety reliability of safety valve.The present invention also has that circuit is simple, warning sensitivity advantages of higher.
Accompanying drawing explanation
Fig. 1 is the structural representation of safety valve pressure warning device of the present invention.
Fig. 2 is the circuit diagram of warning circuit plate in safety valve pressure warning device of the present invention.
In figure: 1-warning circuit plate, 2-support, 3-liner plate, 4-contact, 5-rocker, 6-alarm spring, 7-bearing pin, 8-pressure chamber, 9-pedestal, 10-vent, 11-diaphragm.
Embodiment
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail:
As shown in Figure 1, safety valve pressure warning device of the present invention, pressure alarm comprises support 2, alarm spring 6, diaphragm 11, warning circuit plate 1, rocker 5, pressure chamber 8, contact 4 and pedestal 9, alarm spring 6 is fixed on diaphragm 11 tops, one end of contact 4 is fixed on rocker 5, the other end contacts with warning circuit plate 1, warning circuit plate 1 is installed on support 2, rocker 5 is rotationally connected with support 2, support 2 is arranged at pedestal 9 tops, in pedestal 9, be provided with vent 10, the top of vent 10 is communicated with pressure chamber 8.In the present embodiment, rocker 5 is rotationally connected by bearing pin 7 with support 2.Warning circuit plate 1 is connected with support 2 by liner plate 3.
Steam enters after vent 10, when diaphragm experiences in pressure chamber 8 that pressure source changes, just promotes deformation of elastic components.During pressure superpressure, slide in one end that diaphragm 11 promotes rocker 5 on the upper surface of diaphragm 11, and when contact 4 contacts with described warning circuit plate 1, warning circuit plate 1 gives the alarm.Pressure chamber 8 is the airtight cavity being become with pedestal 9 rivetings by diaphragm 11.
As shown in Figure 2, described warning circuit plate comprises power supply, pressure sensing electric bridge, the first amplifier A1, the second amplifier A2, the 3rd amplifier A3, alarm sound generator, numeral display floater, loudspeaker BL, the first resistance R 1, the second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the first capacitor C 1 and the second capacitor C 2, the power input of pressure sensing electric bridge is connected with the power output end of power supply, the signal output part of pressure sensing electric bridge is connected with negative input with the electrode input end of the first amplifier A1 respectively, the output terminal of the first amplifier A1 is connected with the first end of the first resistance R 1, the second end of the first resistance R 1 is connected with the first end of the first capacitor C 1 with the first end of the second resistance R 2, the second end of the first capacitor C 1 is connected with the electrode input end of the 3rd amplifier A3 with the negative input of the second amplifier A2 respectively, the second end of the second resistance R 2 is connected with the electrode input end of the second amplifier A2 with the first end of the second capacitor C 2 respectively, the second output terminal of amplifier A2 and the signal input part of digital display floater are connected, the output terminal of the 3rd amplifier A3 is connected with the first end of the 4th resistance R 4, the second end of the 4th resistance R 4 is connected with the signal input part of alarm sound generator, the signal output part of alarm sound generator is connected with the first end of the 3rd resistance R 3 with the signal input part of loudspeaker BL respectively, the second end of the 3rd resistance R 3 is connected with the output terminal of digital display floater.
When the output voltage of the second amplifier A2 reaches voltage that alarm point pre-sets when above, the 3rd amplifier A3 output high level, alarm sound generator is removed and is resetted and starting oscillation, drives loudspeaker BL to sound the alarm.When the second amplifier A2 output does not reach alarm point and when voltage is set, the 3rd amplifier A3 is output as low level, so alarm sound generator becomes reset mode, loudspeaker BL is not driven.
Described warning circuit also comprises LED light, and the positive pole of described LED light is inputted out end with the signal input part of loudspeaker BL with the signal of alarm sound generator and is connected, and the negative pole of LED lamp is connected with the first end of the 3rd resistance R 3.
Claims (3)
1. a safety valve pressure warning device, it is characterized in that: comprise support, alarm spring, warning circuit plate, rocker, pressure chamber, diaphragm, contact and pedestal, described alarm spring is fixed on diaphragm top, one end of described contact is fixed on described rocker, the other end contacts with warning circuit plate, described warning circuit plate is installed on described support, described rocker and support are rotationally connected, described support is arranged at described pedestal top, in described pedestal, be provided with vent, the top of described vent is communicated with described pressure chamber.
2. safety valve pressure warning device according to claim 1, it is characterized in that: described warning circuit plate comprises power supply, pressure sensing electric bridge, the first amplifier, the second amplifier, the 3rd amplifier, alarm sound generator, numeral display floater, loudspeaker, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the first electric capacity and the second electric capacity, the power input of described pressure sensing electric bridge is connected with the power output end of described power supply, the signal output part of described pressure sensing electric bridge is connected with negative input with the electrode input end of described the first amplifier respectively, the output terminal of described the first amplifier is connected with the first end of described the first resistance, the second end of described the first resistance is connected with the first end of described the first electric capacity with the first end of described the second resistance, the second end of described the first electric capacity is connected with the electrode input end of described the 3rd amplifier with the negative input of described the second amplifier respectively, the second end of described the second resistance is connected with the electrode input end of described the second amplifier with the first end of described the second electric capacity respectively, the output terminal of described the second amplifier is connected with the signal input part of described digital display floater, the output terminal of described the 3rd amplifier is connected with the first end of the 4th resistance, the second end of described the 4th resistance is connected with the signal input part of described alarm sound generator, the signal output part of described alarm sound generator is connected with the first end of described the 3rd resistance with the signal input part of described loudspeaker respectively, the second end of described the 3rd resistance is connected with the output terminal of described digital display floater.
3. safety valve pressure warning device according to claim 2, it is characterized in that: described warning circuit also comprises LED light, the positive pole of described LED light is inputted out end with the signal input part of described loudspeaker with the signal of described alarm sound generator and is connected, and the negative pole of described LED lamp is connected with the first end of described the 3rd resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210352986.XA CN103672143A (en) | 2012-09-21 | 2012-09-21 | Safety valve pressure warning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210352986.XA CN103672143A (en) | 2012-09-21 | 2012-09-21 | Safety valve pressure warning device |
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| CN103672143A true CN103672143A (en) | 2014-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210352986.XA Pending CN103672143A (en) | 2012-09-21 | 2012-09-21 | Safety valve pressure warning device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104048081A (en) * | 2014-05-29 | 2014-09-17 | 湖北三江航天红峰控制有限公司 | Natural gas safety valve |
| CN105090574A (en) * | 2015-08-21 | 2015-11-25 | 湖北三江航天红峰控制有限公司 | Pressure induction switch suitable for high-temperature gas |
| CN106197838A (en) * | 2016-07-29 | 2016-12-07 | 广东惠利普路桥信息工程有限公司 | A kind of instrument of energy automatic alarm |
| CN106472946A (en) * | 2016-12-09 | 2017-03-08 | 昆山新莱洁净应用材料股份有限公司 | A kind of full-automatic steam steriliser with real-time monitoring valve function |
| CN110043702A (en) * | 2018-01-16 | 2019-07-23 | 广东科维机械设备有限公司 | Alarm pressure safety valve |
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| DE3321561A1 (en) * | 1983-06-15 | 1984-12-20 | Vdo Adolf Schindling Ag, 6000 Frankfurt | Switching device for a temperature switch or pressure switch |
| CN2352792Y (en) * | 1998-10-27 | 1999-12-08 | 谢正扬 | Safety valve driven by explosion-proof valve |
| JP2006055212A (en) * | 2004-08-17 | 2006-03-02 | Senju Sprinkler Kk | Running water sensing device, and sprinkler equipment equipped with the running water sensing device |
| CN101718344A (en) * | 2009-03-30 | 2010-06-02 | 宁波万安股份有限公司 | Electronic gas timing control device |
| CN201554894U (en) * | 2009-11-19 | 2010-08-18 | 青岛澳科仪器有限责任公司 | Ball valve with electronic lead sealing sensor |
| CN202176799U (en) * | 2011-07-15 | 2012-03-28 | 何鸿珠 | Safety valve controller |
| CN202868030U (en) * | 2012-09-21 | 2013-04-10 | 成都市思博睿科技有限公司 | Safety valve pressure alarm device |
-
2012
- 2012-09-21 CN CN201210352986.XA patent/CN103672143A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3321561A1 (en) * | 1983-06-15 | 1984-12-20 | Vdo Adolf Schindling Ag, 6000 Frankfurt | Switching device for a temperature switch or pressure switch |
| CN2352792Y (en) * | 1998-10-27 | 1999-12-08 | 谢正扬 | Safety valve driven by explosion-proof valve |
| JP2006055212A (en) * | 2004-08-17 | 2006-03-02 | Senju Sprinkler Kk | Running water sensing device, and sprinkler equipment equipped with the running water sensing device |
| CN101718344A (en) * | 2009-03-30 | 2010-06-02 | 宁波万安股份有限公司 | Electronic gas timing control device |
| CN201554894U (en) * | 2009-11-19 | 2010-08-18 | 青岛澳科仪器有限责任公司 | Ball valve with electronic lead sealing sensor |
| CN202176799U (en) * | 2011-07-15 | 2012-03-28 | 何鸿珠 | Safety valve controller |
| CN202868030U (en) * | 2012-09-21 | 2013-04-10 | 成都市思博睿科技有限公司 | Safety valve pressure alarm device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104048081A (en) * | 2014-05-29 | 2014-09-17 | 湖北三江航天红峰控制有限公司 | Natural gas safety valve |
| CN104048081B (en) * | 2014-05-29 | 2016-04-13 | 湖北三江航天红峰控制有限公司 | A kind of rock gas safety valve |
| CN105090574A (en) * | 2015-08-21 | 2015-11-25 | 湖北三江航天红峰控制有限公司 | Pressure induction switch suitable for high-temperature gas |
| CN106197838A (en) * | 2016-07-29 | 2016-12-07 | 广东惠利普路桥信息工程有限公司 | A kind of instrument of energy automatic alarm |
| CN106472946A (en) * | 2016-12-09 | 2017-03-08 | 昆山新莱洁净应用材料股份有限公司 | A kind of full-automatic steam steriliser with real-time monitoring valve function |
| CN110043702A (en) * | 2018-01-16 | 2019-07-23 | 广东科维机械设备有限公司 | Alarm pressure safety valve |
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Application publication date: 20140326 |