CN205719532U - A kind of pressure difference switch verifying attachment - Google Patents
A kind of pressure difference switch verifying attachment Download PDFInfo
- Publication number
- CN205719532U CN205719532U CN201620668134.5U CN201620668134U CN205719532U CN 205719532 U CN205719532 U CN 205719532U CN 201620668134 U CN201620668134 U CN 201620668134U CN 205719532 U CN205719532 U CN 205719532U
- Authority
- CN
- China
- Prior art keywords
- pressure difference
- difference switch
- calibration equipment
- pressure
- checking joint
- 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.)
- Expired - Fee Related
Links
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 239000011148 porous material Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 7
- 238000003556 assay Methods 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
A kind of pressure difference switch calibration equipment, including checking joint, checking joint one end is connected with pressure difference switch, the other end is connected with pressure testers, and pressure difference switch and checking joint junction are provided with seal；Calibration equipment also includes universal meter, and universal meter is connected at the contact plug of pressure difference switch.Two sections of screw threads at checking joint ensure that and connect the needs sealing；This calibration equipment has the advantage that connection member is few, joint tighness good, low cost, assay are accurate.
Description
Technical field
The utility model relates to pressure reduction technical field of measurement and test, especially relates to a kind of jacking(oil) pump outlet filter screen pressure difference switch
Pressure reduction calibration technology field.
Background technology
Pressure difference switch utilizes the pressure reduction of two pipelines to send signal, changes when the pressure reduction at series liquid pipe two ends and exceedes control
During device setting value processed, send signal, then valve and then open big or turn down, to reduce the pressure reduction at liquid pipe two ends, reach system
Properly functioning.At present, pressure difference switch is widely used in monitoring gas, non-aggressive medium, measurement absolute pressure, gauge pressure and absolute pressure
Deng.
Pressure reduction during the nuclear power projects unit jacking(oil) pump of applicant is debugged, at discovery jacking(oil) pump outlet filter screen
Switch is without related check report, it is impossible to determine the relevant parameter of pressure difference switch, to this end, ad hoc meter this pressure difference switch calibration equipment.
Content of the invention
The purpose of this utility model is to provide a kind of pressure difference switch calibration equipment, and this device suppresses examination by in-site modeling
Test, can accurately test out pressure difference switch working value, thus avoid the jacking(oil) pump causing due to pressure difference switch supply of material mistake to install
Problem, the technical scheme is that a kind of pressure difference switch calibration equipment, it is characterised in that: described calibration equipment includes that verification connects
Head, described checking joint one end is connected with pressure difference switch, the other end is connected with pressure testers, described pressure difference switch and described school
Test joint and be provided with seal；Described calibration equipment also includes universal meter, and described universal meter is connected to described pressure difference switch
Contact plug at.
Technical characteristic of the present utility model also has: described checking joint is processed into by one section of steel pipe, described steel pipe and institute
State pressure testers to connect end and be machined with internal thread I and be connected end with described pressure difference switch and be machined with internal thread II.
Technical characteristic of the present utility model also has: also have the pore communicating with ambient atmosphere on described checking joint.
Technical characteristic of the present utility model also has: be also machined with platform on the outer surface of described checking joint.
Technical characteristic of the present utility model also has: described checking joint material is stainless steel.
The beneficial effects of the utility model are: this calibration equipment simulates the actual working environment of pressure difference switch, passes through
Certain pressure is applied on pressure difference switch by suppressing of pressure testers, and when pressure difference switch action, this force value corresponding is
Operating pressure for pressure difference switch；Aperture on the checking joint of this device is relative with the negative pressure aperture position on pressure difference switch
Should, can ensure when suppressing that pressure difference switch aperture communicates with air, it is ensured that the accuracy of pressure difference switch measurement result；Checking joint
Two sections of screw threads at place ensure that and connect the needs sealing；This calibration equipment has that connection member is few, joint tighness good, cost
Advantage low, that assay is accurate.
Brief description
Accompanying drawing 1 is the utility model structural representation, and accompanying drawing 2 is checking joint structural representation, and accompanying drawing 3 is accompanying drawing 2
Left view, wherein 1 pressure testers, 2 is checking joint, and 21 is internal thread I, and 22 is internal thread II, and 23 is pore, and 3 is pressure reduction
Switch, 31 is sealing ring, and 32 is contact plug, and 33 is pressure difference switch negative pressure aperture, and 4 is universal meter.
Detailed description of the invention
Below in conjunction with the accompanying drawings, detailed description of the invention of the present utility model is illustrated.The utility model discloses one
Pressure difference switch calibration equipment, this calibration equipment includes checking joint 2, and checking joint 2 one end is connected with pressure difference switch 3, the other end
Being connected with pressure testers 1, pressure difference switch 3 and checking joint 2 junction are provided with seal, and this seal is sealing ring 31；School
Experiment device also includes universal meter 4, and universal meter 4 is connected at the contact plug of pressure difference switch 3.
Checking joint is processed into by one section of steel pipe, steel pipe be connected with pressure testers 1 end be machined with internal thread I 21 and
Pressure difference switch 3 connects end and is machined with internal thread II 22.The pore 23 communicating with ambient atmosphere is also had on checking joint 2.In order to
The convenience placed, and mitigate deadweight as far as possible, the outer surface of checking joint 2 is also machined with platform, in the present embodiment, processing is flat
Platform makes this checking joint position constitute positive six prisms.Checking joint material is stainless steel.
In the present embodiment, sealing ring 31 is the sealing ring that pressure difference switch itself carries, due to pressure difference switch negative pressure aperture 33
Setting so that the side of pressure difference switch band aperture 33 is suction side, and the side deviating from aperture 33 is positive pressure side, pressure testers
Stressing on the positive pressure side of pressure difference switch, after sealing ring 31 ensures pressurization, positive pressure side is not revealed, the pore of opposite side and checking joint
23 communicate, it is ensured that and one pressure of atmospheric pressure.
During verification, pressure testers 1 is suppressed in pressure difference switch 3, when high and low pressure side pressure reduction is gradually increased, and pressure difference switch
Bar magnet action in 3, the contact in adsorption pressure difference switch 3 realizes contact change-over, finally plays alarm function.
Certainly, described above is not limitation of the utility model, and the utility model is also not limited to the example above, this skill
Change, remodeling, interpolation or the replacement that the those of ordinary skill in art field is made in essential scope of the present utility model, also belongs to
In protection domain of the present utility model.
Claims (5)
1. a pressure difference switch calibration equipment, it is characterised in that: described calibration equipment includes checking joint, described checking joint one
End is connected with pressure difference switch, the other end is connected with pressure testers, and described pressure difference switch is provided with described checking joint junction
Seal；Described calibration equipment also includes universal meter, and described universal meter is connected at the contact plug of described pressure difference switch.
2. according to the pressure difference switch calibration equipment described in claim 1, it is characterised in that: described checking joint is added by one section of steel pipe
Work is made, and described steel pipe is connected end and is machined with internal thread I and is connected end with described pressure difference switch and is machined with described pressure testers
Internal thread II.
3. according to the calibration equipment described in claim 2, it is characterised in that: also have on described checking joint and ambient atmosphere phase
Logical pore.
4. according to the calibration equipment described in claim 1, it is characterised in that: it is also machined with flat on the outer surface of described checking joint
Platform.
5. according to the calibration equipment described in claim 1, it is characterised in that: described checking joint material is stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620668134.5U CN205719532U (en) | 2016-06-29 | 2016-06-29 | A kind of pressure difference switch verifying attachment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620668134.5U CN205719532U (en) | 2016-06-29 | 2016-06-29 | A kind of pressure difference switch verifying attachment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205719532U true CN205719532U (en) | 2016-11-23 |
Family
ID=57317363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620668134.5U Expired - Fee Related CN205719532U (en) | 2016-06-29 | 2016-06-29 | A kind of pressure difference switch verifying attachment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205719532U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109186850A (en) * | 2018-07-19 | 2019-01-11 | 武汉船用机械有限责任公司 | The detection device and detection method of differential pressure transmitter device |
-
2016
- 2016-06-29 CN CN201620668134.5U patent/CN205719532U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109186850A (en) * | 2018-07-19 | 2019-01-11 | 武汉船用机械有限责任公司 | The detection device and detection method of differential pressure transmitter device |
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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 |
Granted publication date: 20161123 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |