CN202974547U - Diaphragm type differential pressure measuring instrument - Google Patents
Diaphragm type differential pressure measuring instrument Download PDFInfo
- Publication number
- CN202974547U CN202974547U CN 201220641644 CN201220641644U CN202974547U CN 202974547 U CN202974547 U CN 202974547U CN 201220641644 CN201220641644 CN 201220641644 CN 201220641644 U CN201220641644 U CN 201220641644U CN 202974547 U CN202974547 U CN 202974547U
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- positive pressure
- cavity
- driving lever
- pressure cavity
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Abstract
A diaphragm type differential pressure measuring instrument comprises a positive pressure cavity (1-1), a negative pressure cavity (1-2), a pair of A sensing springs (2), a pair of B sensing springs (3), an elastic diaphragm (4), a push rod (5), an A lifting rod (6), a lifting fork (7), a B lifting rod (8), a pointer (9), a dial plate (10), an instrument mirror (11) and an instrument housing (12). The advantages are that the differential pressure measuring instrument is suitable for a low temperature inflammable medium in terms of a measuring mode, is simple to mount, is safe and reliable, is high in measuring precision, long in service life and convenient in maintenance, and exhibits a certain corrosion resistance property.
Description
Technical field
The utility model relates to the measurement instrument field, is specifically related to a kind of differential pressure measurement instrument.
Background technology
At present, the container of carrying liquid, fluid, pipeline, when the work operation, change because the duty of container, pipeline (equipment) can't directly be observed liquid level and upstream and downstream pressure, need to come medium actual liquid level and and the pressure reduction of the upstream and downstream work tie point position of pipeline (equipment) in reaction vessel indirectly by differential pressure.Particularly low temperature tank car, storage tank, because the gasification property of its splendid attire cryogenic media, when loading and unloading, the variation that needs special instrument to measure liquid level, and existing common level gauging instrument can't be in inflammable cryogenic media, stable and high-precision work, the variation that size also can't flexible adaptation container size need to be arranged on the inside of low-temperature (low temperature) vessel or need to connect teleprinter link, can't guarantee safely, daily servicing can't guarantee.
The utility model content
The purpose of this utility model be exactly for present existing common level gauging instrument can't be in inflammable cryogenic media, stable and high-precision work, size also can't flexible adaptation container size variation, need to be arranged on the inside of low-temperature (low temperature) vessel or need to connect teleprinter link, safety can't guarantee, the deficiency that daily servicing can't guarantee, and a kind of diaphragm type differential pressure measurement instrument is provided.
the utility model is by positive pressure cavity, vacuum cavity, one group of A sensing spring, one group of B sensing spring, the elastic diaphragm sheet, push rod, the A driving lever, shift fork, the B driving lever, pointer, dial plate, table mirror and watchcase form, and just have on positive pressure cavity and vacuum cavity, the negative pressure interface, one group of A sensing spring and one group of B sensing spring are arranged on respectively in positive pressure cavity and vacuum cavity, and one group of A sensing spring and one group of B sensing spring one end are arranged on elastic diaphragm sheet both sides and withstand on respectively on the inwall of positive pressure cavity and vacuum cavity, push rod is arranged on the elastic diaphragm sheet, shift fork is arranged on positive pressure cavity, be connected with A driving lever one end shift fork, the A driving lever other end is by bulb and push rod one end in contact, positive pressure cavity is connected by screw bolt and nut with vacuum cavity, the B driving lever is arranged on shift fork, dial plate is arranged on positive pressure cavity and vacuum cavity by bearing, pointer is realized relative installation by watch core and rotating shaft thereof with dial plate, B driving lever one end is connected with the pointer transmission with clock pin gear by the fan tooth of watch core connecting rod, the table mirror is arranged on watchcase, watchcase mounts cover on positive pressure cavity and vacuum cavity.
The utility model has the advantages that: this differential pressure measurement instrument measurement mode adapts to the inflammable medium of low temperature, installation is simple, safe and reliable, measuring accuracy is high, long service life, easy to maintenance, and have certain corrosion resistance.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is pointer, dial plate, table mirror and watchcase mounting structure schematic diagram.
Embodiment
as Fig. 1, shown in 2, the utility model is by positive pressure cavity 1-1, vacuum cavity 1-2, one group of A sensing spring 2, one group of B sensing spring 3, elastic diaphragm sheet 4, push rod 5, A driving lever 6, shift fork 7, B driving lever 8, pointer 9, dial plate 10, table mirror 11 and watchcase 12 form, and just have on positive pressure cavity 1-1 and vacuum cavity 1-2, the negative pressure interface, one group of A sensing spring 2 and one group of B sensing spring 3 are arranged on respectively in positive pressure cavity 1-1 and vacuum cavity 1-2, and one group of A sensing spring 2 and one group of B sensing spring 3 one end are arranged on elastic diaphragm sheet 4 both sides and withstand on respectively on the inwall of positive pressure cavity 1-1 and vacuum cavity 1-2, push rod 5 is arranged on elastic diaphragm sheet 4, shift fork 7 is arranged on positive pressure cavity 1-1, be connected with A driving lever 6 one end shift forks 7, A driving lever 6 other ends are by bulb and push rod 5 one end in contact, positive pressure cavity 1-1 is connected by screw bolt and nut with vacuum cavity 1-2, B driving lever 8 is arranged on shift fork 7, dial plate 10 is arranged on positive pressure cavity 1-1 and vacuum cavity 1-2 by bearing, pointer 9 is realized relative installation by watch core and rotating shaft thereof with dial plate 10, B driving lever 8 one ends are connected with pointer 9 transmissions with clock pin gear by the fan tooth of watch core connecting rod, table mirror 11 is arranged on watchcase 12, watchcase 12 mounts cover on positive pressure cavity 1-1 and vacuum cavity 1-2.
working method: during use, first to positive pressure cavity 1-1 and vacuum cavity 1-2 just, the negative pressure interface is cut-in pressure p1 and p2 respectively, enter to the press belt dynamic elasticity diaphragm 4 of positive pressure cavity 1-1 and vacuum cavity 1-2 this moment, pressure reduction (△ p=p1-p2) can cause the measurement of 4 pairs of sensing springs of elastic diaphragm sheet (a pair of A sensing spring 2 and a pair of B sensing spring 3) of an axle deflection, push rod 5 on elastic diaphragm sheet 4 makes 6 motions of A driving lever by driving bulb at this moment, and then drive shift fork 7 and B driving lever 8 moves, driving at last pointer 9 rotates, be indicated to again on dial plate 10.
Claims (1)
1. diaphragm type differential pressure measurement instrument, it is characterized in that it is by positive pressure cavity (1-1), vacuum cavity (1-2), one group of A sensing spring (2), one group of B sensing spring (3), elastic diaphragm sheet (4), push rod (5), A driving lever (6), shift fork (7), B driving lever 8, pointer (9), dial plate (10), table mirror (11) and watchcase (12) form, just have on positive pressure cavity (1-1) and vacuum cavity (1-2), the negative pressure interface, one group of A sensing spring (2) is arranged on respectively in positive pressure cavity (1-1) and vacuum cavity (1-2) with one group of B sensing spring (3), and one group of A sensing spring (2) is arranged on elastic diaphragm sheet (4) both sides and withstands on respectively on the inwall of positive pressure cavity (1-1) and vacuum cavity (1-2) with one group of B sensing spring (3) one end, push rod (5) is arranged on elastic diaphragm sheet (4), shift fork (7) is arranged on positive pressure cavity (1-1), be connected with A driving lever (6) one end shift forks (7), A driving lever (6) other end is by bulb and push rod (5) one end in contact, positive pressure cavity (1-1) is connected by screw bolt and nut with vacuum cavity (1-2), B driving lever (8) is arranged on shift fork (7), dial plate (10) is arranged on positive pressure cavity (1-1) and vacuum cavity (1-2) by bearing, pointer (9) is realized relative installation by watch core and rotating shaft thereof with dial plate (10), B driving lever (8) one ends are connected with pointer (9) transmission with clock pin gear by the fan tooth of watch core connecting rod, table mirror (11) is arranged on watchcase (12), watchcase (12) mounts cover on positive pressure cavity (1-1) and vacuum cavity (1-2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220641644 CN202974547U (en) | 2012-11-29 | 2012-11-29 | Diaphragm type differential pressure measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220641644 CN202974547U (en) | 2012-11-29 | 2012-11-29 | Diaphragm type differential pressure measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202974547U true CN202974547U (en) | 2013-06-05 |
Family
ID=48515606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220641644 Expired - Fee Related CN202974547U (en) | 2012-11-29 | 2012-11-29 | Diaphragm type differential pressure measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202974547U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110043627A (en) * | 2019-04-19 | 2019-07-23 | 一汽解放汽车有限公司 | A kind of differential lock of diaphragm structure |
-
2012
- 2012-11-29 CN CN 201220641644 patent/CN202974547U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110043627A (en) * | 2019-04-19 | 2019-07-23 | 一汽解放汽车有限公司 | A kind of differential lock of diaphragm structure |
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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: 20130605 Termination date: 20171129 |