CN2087336U - Range-limited pressure gauge - Google Patents
Range-limited pressure gauge Download PDFInfo
- Publication number
- CN2087336U CN2087336U CN 90202439 CN90202439U CN2087336U CN 2087336 U CN2087336 U CN 2087336U CN 90202439 CN90202439 CN 90202439 CN 90202439 U CN90202439 U CN 90202439U CN 2087336 U CN2087336 U CN 2087336U
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- CN
- China
- Prior art keywords
- pressure
- pressure gauge
- measured medium
- range
- medium
- 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.)
- Pending
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- Measuring Fluid Pressure (AREA)
Abstract
The utility model relates to a range-limited pressure gauge. The entering port for medium to be measured is provided with a spring type one-way valve, and an elastic element is arranged in the valve. The range-limited pressure gauge can be used for detecting, displaying and alarming the pressure of the residual medium in a high-pressure container.
Description
The utility model is a kind of elastic manometer of optional location survey weight range.
Existing elastic manometer all only is applicable to a certain fixing range ability, and when the pressure of measured medium during greater than this range, the flexible member in the pressure gauge damages, and pressure gauge lost efficacy; And when testing pressure during less than this range ability, pressure gauge is malfunctioning or do not indicate.And many pressure sources work overall process in, the pressure variation scope is bigger, so general pressure gauge is difficult to be competent at.
Design idea of the present utility model be to make pressure gauge can low-pressure area sensitive with indicated pressure exactly; And help over-pressure safety device and stop pressure measurement at the higher-pressure region nationality.
The stroke pressure meter of limiting the quantity of of the present utility model is a class elastic manometer, as Bourdon tube gauge, diaphragm type pressure gauge, bellows manometer or bellows-type manometer etc.Porch at its measured medium, be provided with an one-way cock, the opening and closing device of valve is subjected to the Thrust Control of the pressure limiting flexible member (as spring) of the pressure of measured medium and valve, when pressure medium during greater than the thrust of flexible member, valve closes, pressure gauge can not pressure measurement.And when pressure medium during less than the thrust of flexible member, valve opening, pressure gauge is measured the pressure of measured medium.Select the different pressure limiting flexible member of thrust for use, can select manometric different operating district limit.
Pressure gauge of the present utility model is applicable to the constant volume pressure vessel, particularly gas cylinder, household liquified lpg tank etc., the pressure of making residual capacity shows, for rationally using the medium in the container fully, provides a kind of easy detection and indicating device.
Attached Fig. 1 and 2 is a typical structure synoptic diagram of the present utility model.
Accompanying drawing 3 is another structural representations of shank.
Accompanying drawing 4 is electrical schematic diagrams of Fig. 3 structure.
Below in conjunction with accompanying drawing an exemplary embodiments of the present utility model is done detailed explanation.
The 1 nationality pressure tapping 5 of pressure gauge outfit links to each other with the pressure source device, tested pressure medium enters the measured medium inlet 2 of pressure gauge outfit 1 from the passage that is arranged in sliding sleeve 4 bottoms of center pit around valve core 7 of joint 5, make manometric flexible member action, and measure and the indicated pressure value.
When the pressure of measured medium during greater than the predetermined pushing force of pressure limiting spring 3, valve core 7 under the pressure effect of measured medium, the measured medium of confining pressure gauge outfit 1 inlet 2, pressure gauge outfit 1 stops to measure and shows pressure.And when measured medium pressure during less than the predetermined pushing force of pressure limiting spring 3, valve core 7 under the pushing force effect of spring 3, the measured medium of opening pressure gauge outfit 1 inlet 2, pressure gauge outfit 1 begins to measure and indicate the force value of measured medium.
The manometric part of the utility model can be selected suitable material for use, makes the sliding sleeve 4 and the termination of measured medium inlet 2 become a pair of electric contact of mutually insulated, and makes it to link to each other with the alarm switch circuit.As accompanying drawing 3, when measured medium pressure during greater than the predetermined pushing force of pressure limiting spring 3, enter the mouth 2 termination of the embedded conducting rings 8 of sliding sleeve 4 and measured medium contacts closing of circuit, alarm equipment alarm; When measured medium pressure during less than the predetermined pushing force of pressure limiting spring 3, sliding sleeve 4 embedded conducting rings 8 separate with the termination of measured medium inlet 2, and circuit cut-offs, and alarm is failure to actuate.Also can select suitable material for use, make sliding sleeve 4 and pressure tapping 5 become a pair of electrical contact of mutually insulated, when measured medium pressure during less than the predetermined pushing force of pressure limiting spring 3, sliding sleeve 4 embedded conducting rings 8 contact with pressure tapping 5 embedded conducting strips 9, closing of circuit, alarm equipment alarm; When measured medium pressure during greater than the predetermined pushing force of pressure limiting spring 3, the embedded conducting ring 8 of sliding sleeve 4 and meter connector 5 embedded conducting strips 9 separate, and circuit cut-offs, and alarm is failure to actuate.Also has packing washer 6 among the figure.
Claims (2)
1, a kind of stroke pressure meter of limiting the quantity of is characterized in that the measured medium porch is provided with an one-way cock, is provided with flexible member in the valve.
2, the described stroke pressure meter of limiting the quantity of of claim 1 is characterized in that the sliding sleeve of one-way cock and measured medium inlet or pressure tapping are a pair of electrical contacts on the alarm switch circuit node.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90202439 CN2087336U (en) | 1990-03-03 | 1990-03-03 | Range-limited pressure gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90202439 CN2087336U (en) | 1990-03-03 | 1990-03-03 | Range-limited pressure gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2087336U true CN2087336U (en) | 1991-10-23 |
Family
ID=4883848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90202439 Pending CN2087336U (en) | 1990-03-03 | 1990-03-03 | Range-limited pressure gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2087336U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435385A (en) * | 2012-01-03 | 2012-05-02 | 北京爱社时代科技发展有限公司 | Gas pressure gauge with automatic pressure alarming function |
| CN106024677A (en) * | 2016-05-30 | 2016-10-12 | 上海华力微电子有限公司 | System for preventing reverse flow in exhaust pipe and process chamber |
-
1990
- 1990-03-03 CN CN 90202439 patent/CN2087336U/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435385A (en) * | 2012-01-03 | 2012-05-02 | 北京爱社时代科技发展有限公司 | Gas pressure gauge with automatic pressure alarming function |
| CN106024677A (en) * | 2016-05-30 | 2016-10-12 | 上海华力微电子有限公司 | System for preventing reverse flow in exhaust pipe and process chamber |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |