CN204942651U - Pressure gauge Protective valve - Google Patents
Pressure gauge Protective valve Download PDFInfo
- Publication number
- CN204942651U CN204942651U CN201520755155.6U CN201520755155U CN204942651U CN 204942651 U CN204942651 U CN 204942651U CN 201520755155 U CN201520755155 U CN 201520755155U CN 204942651 U CN204942651 U CN 204942651U
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- China
- Prior art keywords
- channel
- pressure
- spool
- valve
- pressure gauge
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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.)
- Expired - Fee Related
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- Measuring Fluid Pressure (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
The utility model discloses a kind of pressure gauge Protective valve, comprise valve body, spring, spool and plug, cross one another gas channel and valve core channel is provided with in valve body, spool is arranged in valve core channel, two plugs are arranged on the two ends of valve core channel, spring to be arranged in valve core channel and between the first end and plug of spool, space is provided with between second end of spool and plug, the middle part of spool is provided with and the axis of gas channel ventilation groove in the same way, pressure channel is provided with in valve body, the two ends of pressure channel are communicated with the inlet end of gas channel and the space between plug with spool respectively.The utility model is by the alternation of cross-section of spool and coordinate the effect of spring, realize pressure normal time Protective valve inlet/outlet channel connection, pressure gauge normally works; When pressure superelevation, inlet/outlet passage is cut off in spool action, thus protection pressure gauge, avoid because pressure superelevation is destroyed.
Description
Technical field
The utility model relates to a kind of Protective valve, particularly relates to a kind of pressure gauge Protective valve.
Background technique
Pressure gauge is widely used in the fields such as chemical industry, oil-gas gathering and transportation and process, mine, city gas, military project, and for display system pressure on the spot, application surface is very big; At present, each field adopts the method for intensified pressure table range to carry out the pressure surge of adaptive system usually when selection pressure table.But when the pressure of system occurs larger fluctuation once in a while, when particularly the pressure of detected system is lower (as 20kPa), but pressure once in a while big ups and downs time instantaneous pressure higher (as reaching 300kPa), now as selected intensified pressure table range (as selected 0 ~ 400kPa) to avoid pressure gauge to damage, then when system is normally run, pressure gauge, substantially near 0 o'clock, cannot judge that whether system is working properly; During as selected the pressure gage measuring range of 2 to 3 times of normal pressure (as selected 0 ~ 60kPa), when pressure big ups and downs, pressure gauge is by damaged, and does not almost have better solution.
Model utility content
The purpose of this utility model is just to provide a kind of pressure gauge Protective valve with the function in the automatic cut-out pressure source of superpressure to solve the problem.
The utility model is achieved through the following technical solutions above-mentioned purpose:
A kind of pressure gauge Protective valve, comprise valve body, spring, spool and plug, cross one another gas channel and valve core channel is provided with in described valve body, described spool is arranged in described valve core channel, two described plugs are arranged on the two ends of described valve core channel, described spring to be arranged in described valve core channel and between the first end and described plug of described spool, space is provided with between second end of described spool and described plug, the middle part of described spool is provided with and the axis of described gas channel ventilation groove in the same way, pressure channel is provided with in described valve body, the two ends of described pressure channel are communicated with the inlet end of described gas channel and the space between described plug with described spool respectively.
Particularly, described pressure channel is cross passage, and the two ends of described pressure channel are communicated with described valve core channel with described gas channel respectively, and its other two ends are all arranged on the outside of described valve body and are sealed by described plug.
Preferably, the axis of described gas channel and the axis of described valve core channel mutually vertical.
Particularly, described Protective valve is arranged between pressure source and described pressure gauge, and the inlet end of described Protective valve is connected with described pressure source, and the outlet side of described Protective valve is connected with described pressure gauge.
The beneficial effects of the utility model are:
A kind of pressure gauge Protective valve of the utility model is by the alternation of cross-section of spool and coordinate the effect of spring, realize pressure normal time Protective valve inlet/outlet channel connection, pressure gauge normally works; When pressure superelevation, inlet/outlet passage is cut off in spool action, thus protection pressure gauge, avoid because pressure superelevation is destroyed.
Accompanying drawing explanation
Fig. 1 is the sectional view of a kind of pressure gauge Protective valve described in the utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1, a kind of pressure gauge Protective valve of the utility model, comprise valve body 1, spring 2, spool 3 and plug 9, orthogonal gas channel 4 and valve core channel 7 is provided with in valve body 1, spool 3 is arranged in valve core channel 7, two plugs 9 are arranged on the two ends of valve core channel 7, spring 2 to be arranged in valve core channel 7 and between the first end and plug 9 of spool 3, space is provided with between second end of spool 3 and plug 9, the middle part of spool 3 is provided with and the axis of gas channel 4 ventilation groove in the same way, pressure channel 8 is provided with in valve body 1, the two ends of pressure channel 8 are communicated with the inlet end of gas channel 4 and the space between plug 9 with spool 3 respectively, pressure channel 8 is cross passage, the two ends of pressure channel 8 are communicated with valve core channel 7 with gas channel 4 respectively, its other two ends are all arranged on the outside of valve body 1 and are sealed by plug 9.
The working principle of the utility model pressure gauge Protective valve is as follows:
Protective valve is arranged between pressure source and pressure gauge; the inlet end of Protective valve is connected with pressure source; the outlet side of Protective valve is connected with pressure gauge; when normally using pressure representative; second end of pressure to spool 3 of pressure source produces the pressure to its first end direction; the elastic force of this pressure and spring 2 is offset; spool 3 is not mobile in valve core channel 7; ventilation groove is positioned on the cross section at gas channel 4 place; the inlet end of Protective valve is communicated with outlet side; the pressure normal delivery of pressure source is to pressure gauge, and pressure gauge normally works.
When the pressure of pressure source is excessive; second end of pressure source to spool 3 produces the elastic force that pressure is greater than spring 2; spool 3 is moved to first end direction; ventilation groove is finally made not to be positioned on the cross section at gas channel 4 place; the inlet end of Protective valve and outlet side are cut off; avoid hyperpressure and be passed to pressure gauge, prevent pressure gauge damaged.
The technical solution of the utility model is not limited to the restriction of above-mentioned specific embodiment, and every technology distortion made according to the technical solution of the utility model, all falls within protection domain of the present utility model.
Claims (4)
1. a pressure gauge Protective valve, it is characterized in that: comprise valve body, spring, spool and plug, cross one another gas channel and valve core channel is provided with in described valve body, described spool is arranged in described valve core channel, two described plugs are arranged on the two ends of described valve core channel, described spring to be arranged in described valve core channel and between the first end and described plug of described spool, space is provided with between second end of described spool and described plug, the middle part of described spool is provided with and the axis of described gas channel ventilation groove in the same way, pressure channel is provided with in described valve body, the two ends of described pressure channel are communicated with the inlet end of described gas channel and the space between described plug with described spool respectively.
2. pressure gauge Protective valve according to claim 1; it is characterized in that: described pressure channel is cross passage; the two ends of described pressure channel are communicated with described valve core channel with described gas channel respectively, and its other two ends are all arranged on the outside of described valve body and are sealed by described plug.
3. pressure gauge Protective valve according to claim 1, is characterized in that: the axis of described gas channel is mutually vertical with the axis of described valve core channel.
4. pressure gauge Protective valve according to claim 1, is characterized in that: described Protective valve is arranged between pressure source and described pressure gauge, and the inlet end of described Protective valve is connected with described pressure source, and the outlet side of described Protective valve is connected with described pressure gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520755155.6U CN204942651U (en) | 2015-09-25 | 2015-09-25 | Pressure gauge Protective valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520755155.6U CN204942651U (en) | 2015-09-25 | 2015-09-25 | Pressure gauge Protective valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204942651U true CN204942651U (en) | 2016-01-06 |
Family
ID=55010083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520755155.6U Expired - Fee Related CN204942651U (en) | 2015-09-25 | 2015-09-25 | Pressure gauge Protective valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204942651U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909838A (en) * | 2016-06-03 | 2016-08-31 | 安徽天康(集团)股份有限公司 | High-temperature, high-pressure and high-corrosion resistance over-pressure protector |
| CN107013704A (en) * | 2017-04-07 | 2017-08-04 | 陕西合阳风动工具有限责任公司 | A kind of Pneumatic-hydraulic interlocked no water protector |
| CN109764142A (en) * | 2019-01-29 | 2019-05-17 | 湖北三江航天红峰控制有限公司 | A kind of trimmer valve |
-
2015
- 2015-09-25 CN CN201520755155.6U patent/CN204942651U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909838A (en) * | 2016-06-03 | 2016-08-31 | 安徽天康(集团)股份有限公司 | High-temperature, high-pressure and high-corrosion resistance over-pressure protector |
| CN107013704A (en) * | 2017-04-07 | 2017-08-04 | 陕西合阳风动工具有限责任公司 | A kind of Pneumatic-hydraulic interlocked no water protector |
| CN109764142A (en) * | 2019-01-29 | 2019-05-17 | 湖北三江航天红峰控制有限公司 | A kind of trimmer valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180425 Address after: 610037 Yingxing international 19, West Road, Jinniu District, Chengdu, Sichuan Co-patentee after: Sichuan Jinxing Petroleum and Chemical Machinery Equipment Co., Ltd. Patentee after: Sichuan Venus clean energy equipment limited-liability company Co-patentee after: Sichuan Hengzhong Clean Energy Complete Equipment Manufacturing Co., Ltd. Co-patentee after: Sichuan Jinke Environmental Protection Technology Co., Ltd. Address before: 610037 Yingxing international 19, West Road, Jinniu District, Chengdu, Sichuan Co-patentee before: Sichuan Jinxing Petroleum and Chemical Machinery Equipment Co., Ltd. Patentee before: Sichuan Venus clean energy equipment limited-liability company Co-patentee before: Sichuan Hengzhong Clean Energy Complete Equipment Manufacturing Co., Ltd. Co-patentee before: Sichuan Jinke Environmental Protection Technology Co., Ltd. Co-patentee before: The sub-Venus special equipment Co., Ltd that connects in Sichuan |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160106 Termination date: 20180925 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |