CN201138265Y - Differential pressure meter - Google Patents
Differential pressure meter Download PDFInfo
- Publication number
- CN201138265Y CN201138265Y CNU2007201990343U CN200720199034U CN201138265Y CN 201138265 Y CN201138265 Y CN 201138265Y CN U2007201990343 U CNU2007201990343 U CN U2007201990343U CN 200720199034 U CN200720199034 U CN 200720199034U CN 201138265 Y CN201138265 Y CN 201138265Y
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- CN
- China
- Prior art keywords
- pressure
- pressure chamber
- gauge
- body flange
- axle sleeve
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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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Abstract
The utility model discloses a differential pressure gauge. The differential pressure gauge is characterized in that a first and a second pressure chambers are arranged in a flange body; the first pressure chamber is communicated with a first pressure interface; the second pressure chamber is communicated with a second pressure interface; an elastic pressure element is arranged between the first and the second pressure chambers; and the elastic pressure element is connected with a wrench shaft and the wrench shaft is connected with a gauge head. The elastic pressure element has corresponding displacement under the action of different pressure difference to drive the wrench shaft to make wrench movement. The displacement is transited by the wrench shaft and indicated value is measured after being amplified by the head gauge. The differential pressure gauge has the advantages of simple structure and low cost. As two different pressure acts on one elastic element directly, precision is high. As the wrench shaft can transmit displacement under confinement, the differential pressure gauge is suitable for high-hydrostatics pressure measurement and safety coefficient is high.
Description
Technical field
The utility model relates to a kind of device for pressure measurement, is specifically related to a kind of differential pressure gauge.
Background technology
The differential pressure gauge structure that exists has dual damascene cast and double wave to step on cast basically at present, and positive negative pressure cavity is same flexible member, because pressure acts on the one-sided of flexible member, so static pressure is not high.Single Bourdon tube structure differential pressure gauge is arranged because opposite side is a pressure chamber with the watchcase cavity, so static pressure is not high yet.The high static pressure differential pressure list structure complexity of two diaphragm structures is arranged, and inside is also oil-filled, vacuumizes, so the cost height.
Summary of the invention
The purpose of this utility model is to provide a kind of novel differential pressure table that can overcome above shortcoming.
In order to realize this purpose, the technical solution of the utility model is as follows: a kind of differential pressure gauge, comprise the body flange, it is characterized in that being provided with in the body flange first pressure chamber and second pressure chamber, first pressure chamber is communicated with first pressure interface, and second pressure chamber is communicated with second pressure interface, is provided with the elasticity pressure parts between first pressure chamber and second pressure chamber, this elasticity pressure parts is connected with the twisting axle, and the twisting axle is connected with gauge outfit.
The elasticity pressure parts produces corresponding displacement under the effect of different pressures difference, drive the twisting of twisting axle, and the twisting axle spreads out of this displacement, indication measured value after gauge outfit is amplified.That advantage of the present utility model is is simple in structure, cost is low, because two kinds of different pressures directly act on the flexible member, so the precision height, because the twisting axle can transmit displacement under the sealing situation, so be suitable for high static pressure measurement and safety coefficient height.
Description of drawings
Fig. 1 is the structural representation of the utility model first embodiment
Fig. 2 is the structural representation of twisting axle among Fig. 1
Fig. 3 is the structural representation of the utility model second embodiment
Fig. 4 is the structural representation of twisting axle among Fig. 3
Fig. 5 is the structural representation of the utility model the 3rd embodiment
Fig. 6 is a gauge outfit synoptic diagram of the present utility model
Embodiment
There is shown a kind of differential pressure gauge, comprise body flange 1, it is characterized in that being provided with in the body flange 1 first pressure chamber 2 and second pressure chamber 3, first pressure chamber 2 is communicated with first pressure interface 4, second pressure chamber 3 is communicated with second pressure interface 5, be provided with the elasticity pressure parts between first pressure chamber 2 and second pressure chamber 3, this elasticity pressure parts is connected with twisting axle 6, and twisting spools 6 is connected with gauge outfit.
Fig. 1 is first embodiment of the present utility model.This elasticity pressure parts is a flexible sheet 7.Fig. 2 shows the structural representation of twisting axle 6.Twisting axle 6 comprises the threaded sleeve 8 of fixedlying connected with body flange 1 upper end, the external stability axle sleeve 21 of fixedlying connected with body flange 1 lower end, the bottom axle sleeve 9 that is rotationally connected with external stability axle sleeve 21, bottom axle sleeve 9 is connected with central shaft 10, also be connected with kapillary 11 between bottom axle sleeve 9 and the threaded sleeve 8, the elasticity pressure parts is connected with bottom axle sleeve 9 by web member, and central shaft 10 is connected with gauge outfit.Be provided with bearing or annular ring or many spheroid steel ball compositions etc. between bottom axle sleeve 9 and the external stability axle sleeve 21, make to relatively rotate between bottom axle sleeve 9 and the external stability axle sleeve 21.Kapillary 11 can adopt has certain flexible thin walled tube.The bottom of central shaft 10 bottoms, bottom axle sleeve 9 and the bottom of kapillary 11 with the sealing of a definite form as being welded together.In this embodiment, the middle part of flexible sheet 7 is connected with the twisting axle by web member.When having pressure reduction between first pressure chamber 2 and second pressure chamber 3, flexible sheet 7 can be subjected to displacement, thereby the central shaft 10 that drives twisting axle 6 rotates.In order to protect flexible sheet 7 survivable, be provided with the anti-shape ripple 12 of overload at the inwall of body flange 1, this overload prevents that the shape of shape ripple matches with the shape of flexible sheet 7.When a side of flexible sheet 7 was subjected to overload pressure, this flexible sheet 7 can be close to the anti-shape ripple of overload and be unlikely to damage.In this embodiment, body flange 1 is made up of left and right sides two parts, fixes with forms such as bolt and tight or welding between two parts, and flexible sheet 7 is clipped between two parts.This flexible sheet 7 can add the O shape circle of close size, is used for sealing during to folder or welding at body flange two parts.
Fig. 3 is second embodiment of the present utility model.This elasticity pressure parts is a corrugated tube 13, the openend of this corrugated tube 13 is connected with body flange 1, the blind end of this corrugated tube 13 is connected with twisting axle 6 by web member, the inner space of this corrugated tube 13 forms first pressure chamber 2, be connected with first pressure interface 4, the outer peripheral areas of this corrugated tube 13 has formed second pressure chamber 3, is connected with second pressure interface 5.When having pressure reduction between first pressure chamber 2 and second pressure chamber 3, corrugated tube 13 can be subjected to displacement, thereby the central shaft 10 that drives twisting axle 6 rotates.In order to prevent that this U-shaped spring corrugated pipe 13 from damaging under overload situations, therefore in first pressure chamber 2, be provided with the overload fore-set 14 that is connected with body flange 1, body flange 1 inwall is provided with the overload wall 15 that matches with the blind end outer shape of corrugated tube 13.Fig. 4 shows the structural representation of twisting axle among this embodiment.Twisting axle 6 comprises the threaded sleeve 8 of fixedlying connected with body flange 1, the bottom axle sleeve 9 that is rotationally connected with threaded sleeve 8, bottom axle sleeve 9 is connected with central shaft 10, also be connected with kapillary 11 between bottom axle sleeve 9 and the threaded sleeve 8, the elasticity pressure parts is connected with bottom axle sleeve 9 by web member, and central shaft 10 is connected with gauge outfit.Be provided with bearing or annular ring or many spheroid steel ball compositions etc. between threaded sleeve 8 and the bottom axle sleeve 9, make to relatively rotate between threaded sleeve 8 and the bottom axle sleeve 9.Kapillary 11 can adopt has certain flexible thin walled tube.The bottom of central shaft 10 bottoms, bottom axle sleeve 9 and the bottom of kapillary 11 are by being welded together.
Fig. 5 is the 3rd embodiment of the present utility model.This elasticity pressure parts is a bourdon tube 15, the end sealing of this bourdon tube 15, and the other end of this bourdon tube 15 is connected with first pressure interface 4, and the inside of this bourdon tube 15 forms first pressure chamber 2, and the outside of this bourdon tube 15 forms second pressure chamber 3.The blind end of this bourdon tube 15 is connected with twisting axle 6 by web member.When having pressure reduction between first pressure chamber 2 and second pressure chamber 3, bourdon tube 15 can be subjected to displacement, and the central shaft 10 that drives twisting axle 6 rotates, and is wherein the same among two embodiment of structure and front of twisting axle 6.In order to prevent that bourdon tube 15 from damaging under overload situations, therefore the inwall at body flange 1 is provided with the anti-shape wall 16 of the overload that matches with bourdon tube 15 profiles.
Fig. 6 is the structural representation of gauge outfit.Can see that gauge outfit comprises watchcase 17, transmission component 18, movement 19, pointer 20 etc.The central shaft 10 of twisting axle 6 is connected with movement 19 by transmission component 18, after amplifying by movement 19, by pointer 20 indication measured values.
Claims (10)
1, a kind of differential pressure gauge, comprise the body flange, it is characterized in that being provided with in the body flange first pressure chamber and second pressure chamber, first pressure chamber is communicated with first pressure interface, second pressure chamber is communicated with second pressure interface, be provided with the elasticity pressure parts between first pressure chamber and second pressure chamber, this elasticity pressure parts is connected with the twisting axle, and the twisting axle is connected with gauge outfit.
2, differential pressure gauge as claimed in claim 1, it is characterized in that twisting axle and comprise the threaded sleeve of fixedlying connected with the body flange, the bottom axle sleeve that is rotationally connected with threaded sleeve, the bottom axle sleeve is connected with central shaft, also be connected with kapillary between bottom axle sleeve and the threaded sleeve, the elasticity pressure parts is connected with the bottom axle sleeve by web member, and central shaft is connected with gauge outfit.
3, differential pressure gauge as claimed in claim 1, it is characterized in that twisting axle and comprise the threaded sleeve of fixedlying connected with body flange upper end, the external stability axle sleeve of fixedlying connected with body flange lower end, the bottom axle sleeve that is rotationally connected with the external stability axle sleeve, the bottom axle sleeve is connected with central shaft, also be connected with kapillary between bottom axle sleeve and the threaded sleeve, the elasticity pressure parts is connected with the bottom axle sleeve by web member, and central shaft is connected with gauge outfit.
4, differential pressure gauge as claimed in claim 1 or 2 is characterized in that the bottom of central shaft bottom, bottom axle sleeve and bottom capillaceous are by being welded together.
5, as each described differential pressure gauge in the claim 1 to 3, it is characterized in that this elasticity pressure parts is a flexible sheet, one side of flexible sheet is first pressure chamber, and the opposite side of flexible sheet is second pressure chamber, and the middle part of this flexible sheet is connected with the twisting axle by web member.
6, differential pressure gauge as claimed in claim 5 is characterized in that being provided with the anti-shape ripple of the overload that matches with the flexible sheet profile at the inwall of body flange.
7, as each described differential pressure gauge in the claim 1 to 3, it is characterized in that this elasticity pressure parts comprises that this elasticity pressure parts is a corrugated tube, the openend of this corrugated tube is connected with the body flange, the blind end of this corrugated tube is connected with the twisting axle by web member, the inner space of this corrugated tube forms first pressure chamber, be connected with first pressure interface, the outer peripheral areas of this corrugated tube has formed second pressure chamber, is connected with second pressure interface.
8, differential pressure gauge as claimed in claim 7 is characterized in that being provided with in first pressure chamber overload fore-set that is connected with the body flange, and the body flange inner wall is provided with the overload wall that matches with the blind end outer shape of corrugated tube.
9, as each described differential pressure gauge in the claim 1 to 3, it is characterized in that this elasticity pressure parts is a bourdon tube, the one end sealing of this bourdon tube, the other end of this bourdon tube is connected with first pressure interface, the inside of this bourdon tube forms first pressure chamber, the outside of this bourdon tube forms second pressure chamber, and the blind end of this bourdon tube is connected with the twisting axle by web member.
10, differential pressure gauge as claimed in claim 9 is characterized in that being provided with the anti-shape wall of the overload that matches with the bourdon tube profile at the inwall of body flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201990343U CN201138265Y (en) | 2007-12-07 | 2007-12-07 | Differential pressure meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201990343U CN201138265Y (en) | 2007-12-07 | 2007-12-07 | Differential pressure meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201138265Y true CN201138265Y (en) | 2008-10-22 |
Family
ID=40038949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201990343U Expired - Fee Related CN201138265Y (en) | 2007-12-07 | 2007-12-07 | Differential pressure meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201138265Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108291848A (en) * | 2015-11-30 | 2018-07-17 | 西门子股份公司 | Pressure sensor apparatus and for using this pressure sensor apparatus carry out process tool measurement converter |
-
2007
- 2007-12-07 CN CNU2007201990343U patent/CN201138265Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108291848A (en) * | 2015-11-30 | 2018-07-17 | 西门子股份公司 | Pressure sensor apparatus and for using this pressure sensor apparatus carry out process tool measurement converter |
| CN108291848B (en) * | 2015-11-30 | 2020-04-14 | 西门子股份公司 | Pressure sensor arrangement and measurement transducer for process engineering using such a pressure sensor arrangement |
| US10983023B2 (en) | 2015-11-30 | 2021-04-20 | Siemens Aktiengesellschaft | Pressure sensor assembly and measurement transducer for process instrumentation with the pressure sensor assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081022 Termination date: 20101207 |