CN202853843U - Calibration device for pressure transducer - Google Patents
Calibration device for pressure transducer Download PDFInfo
- Publication number
- CN202853843U CN202853843U CN 201220527496 CN201220527496U CN202853843U CN 202853843 U CN202853843 U CN 202853843U CN 201220527496 CN201220527496 CN 201220527496 CN 201220527496 U CN201220527496 U CN 201220527496U CN 202853843 U CN202853843 U CN 202853843U
- Authority
- CN
- China
- Prior art keywords
- pressure transducer
- air chamber
- block
- driving mechanism
- fixed block
- 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 - Lifetime
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- Measuring Fluid Pressure (AREA)
Abstract
Disclosed in the utility model is a calibration device for a pressure transducer. The calibration device comprises a support, a fixed block, a moving block, a moving rack and a driving mechanism; the fixed block and the moving rack are fixed on the support; and the moving block is connected to the moving rack. The fixed block is parallel with the moving block; and the region between the fixed block and the moving block is a calibration region. The driving mechanism is arranged at one side, opposite to the moving block's the other side facing the calibration region, of the moving block; and the driving mechanism includes a push rod, an air chamber and an elastic membrane; one end of the push rod is pressed against the moving block and the other end thereof is pressed against the elastic membrane; and the elastic membrane is the side wall of one side, heading to the calibration region, of the air chamber, wherein the side wall is also the inner wall of the air chamber. An air inlet is arranged on the outer wall of the air chamber; and an inlet valve is arranged on the air inlet. According to the calibration device for a pressure transducer, constant force control can be realized easily; and the pressure in the calibration region remains constant so long as air flushing is stopped. Meanwhile, the size of the calibration device can be reduced relatively.
Description
Technical field
The utility model relates to a kind of caliberating device, more specifically is a kind of caliberating device of pressure transducer, belongs to the test apparatus technical field.
Background technology
The caliberating device that standard pressure transducer and pressure transducer to be calibrated is placed pressure transducer is usually adopted in the demarcation of pressure transducer, be subject to equal-sized power at the caliberating device Plays pressure transducer of pressure transducer and pressure transducer to be calibrated, under different stressing conditions, the difference of reading of standard pressure transducer and pressure transducer to be calibrated is pressure transducer accurate rate to be calibrated, when only having difference of reading when standard pressure transducer and pressure transducer to be calibrated less than setting, pressure transducer to be calibrated is qualified.
The caliberating device of pressure transducer generally comprises support, fixed block, movable block, movable stand and driving mechanism, fixed block, movable stand are fixed on the support, movable block is connected on the movable stand, fixed block and movable block are parallel to each other, zone between fixed block and the movable block is calibration zone, driving mechanism at movable block towards the relative side of calibration zone.The caliberating device of above-mentioned pressure transducer is put into calibration zone with standard pressure transducer and pressure transducer to be calibrated, promoting movable block by the driving mechanism running moves to calibration zone, make standard pressure transducer and pressure transducer to be calibrated be subject to respectively equipressure, because the driving mechanism of the caliberating device of existing pressure transducer is generally motor or oil cylinder or cylinder, control ratio for constant power is difficult, and the caliberating device volume of pressure transducer is also larger simultaneously.
The utility model content
For above-mentioned situation, the control that the problem that the utility model quasi-solution is determined provides a kind of constant power easily, the caliberating device of the pressure transducer of small volume.
For addressing the above problem, the utility model has adopted following technical scheme: a kind of caliberating device of pressure transducer, it comprises support, fixed block, movable block, movable stand and driving mechanism, described fixed block, movable stand is fixed on the support, described movable block is connected on the movable stand, described fixed block and movable block are parallel to each other, zone between described fixed block and the movable block is calibration zone, described driving mechanism at movable block towards the relative side of calibration zone, described driving mechanism comprises push rod, air chamber and elastic membrane, one end of described push rod withstands on the movable block, the other end withstands on the elastic membrane, described elastic membrane is that air chamber is towards the sidewall of calibration zone direction one side, it is the inwall of air chamber, the outer wall of described air chamber is provided with air admission hole, and described air admission hole is provided with gas admittance valve.
Described gas admittance valve is retaining valve.
Adopt said structure, the caliberating device of a kind of pressure transducer of the present utility model, because driving mechanism comprises push rod, air chamber and elastic membrane, one end of described push rod withstands on the movable block, the other end withstands on the elastic membrane, described elastic membrane is air chamber towards the sidewall of calibration zone direction one side, is the inwall of air chamber, the outer wall of described air chamber is provided with air admission hole, and described air admission hole is provided with gas admittance valve.As long as gas admittance valve is passed into air, air chamber expands like this, makes elastic membrane head on push rod, movable block moves, the calibration zone pressurized, the caliberating device of the pressure transducer of this structure is easier to for the control ratio of constant power, as long as stop qi of chong channel ascending adversely, calibration zone just can be kept a constant pressure.But the caliberating device volume of while pressure transducer is relative decrease also.
Description of drawings
Fig. 1 is the structural representation of the board-like building stones abrasion machine of the utility model.
Among the figure: 1-support, 2-fixed block, 3-movable block, 4-movable stand, 5-calibration zone, 6-push rod, 7-air chamber, 8-elastic membrane, 9-air admission hole, 10-gas admittance valve, 11-standard pressure transducer, the pressure transducer that 12-is to be calibrated.
Embodiment
As shown in Figure 1, the caliberating device of pressure transducer of the present utility model, it comprises support 1, fixed block 2, movable block 3, movable stand 4 and driving mechanism, described fixed block 2, movable stand 4 are fixed on the support 1, described movable block 3 is connected on the movable stand 4, described fixed block 2 is parallel to each other with movable block 3, and the zone between described fixed block 2 and the movable block 3 is calibration zone 5, described driving mechanism at movable block towards the relative side of calibration zone.Said structure and prior art are similar, therefore, no longer launch to describe.
The characteristics of the caliberating device of pressure transducer of the present utility model are that driving mechanism is distinguished to some extent, driving mechanism comprises push rod 6, air chamber 7 and elastic membrane 8, one end of described push rod 6 withstands on the movable block 3, the other end withstands on the elastic membrane 8, described elastic membrane 8 for air chamber 7 towards the sidewall of calibration zone 5 directions one side, be the inwall of air chamber, the outer wall of described air chamber is provided with air admission hole 9, described air admission hole 9 is provided with gas admittance valve 10, and described gas admittance valve 10 is retaining valves.
When the caliberating device of pressure transducer of the present utility model uses, standard pressure transducer 11 and pressure transducer 12 to be calibrated are put into calibration zone, by air admission hole 9 is driven qi of chong channel ascending adversely, promote movable block 3 and move to calibration zone, make standard pressure transducer 11 and pressure transducer 12 to be calibrated be subject to respectively equal pressure.
Claims (2)
1. the caliberating device of a pressure transducer, it comprises support (1), fixed block (2), movable block (3), movable stand (4) and driving mechanism, described fixed block (2), movable stand (4) is fixed on the support (1), described movable block (3) is connected on the movable stand (4), described fixed block (2) is parallel to each other with movable block (3), zone between described fixed block (2) and the movable block (3) is calibration zone (5), described driving mechanism at movable block towards the relative side of calibration zone, it is characterized in that described driving mechanism comprises push rod (6), air chamber (7) and elastic membrane (8), one end of described push rod (6) withstands on the movable block (3), the other end withstands on the elastic membrane (8), described elastic membrane (8) is that air chamber (7) is towards the sidewall of calibration zone (5) direction one side, it is the inwall of air chamber, the outer wall of described air chamber is provided with air admission hole (9), and described air admission hole (9) is provided with gas admittance valve (10).
2. the caliberating device of pressure transducer according to claim 1 is characterized in that described gas admittance valve (10) is retaining valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220527496 CN202853843U (en) | 2012-10-16 | 2012-10-16 | Calibration device for pressure transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220527496 CN202853843U (en) | 2012-10-16 | 2012-10-16 | Calibration device for pressure transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202853843U true CN202853843U (en) | 2013-04-03 |
Family
ID=47985027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220527496 Expired - Lifetime CN202853843U (en) | 2012-10-16 | 2012-10-16 | Calibration device for pressure transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202853843U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015070579A1 (en) * | 2013-11-14 | 2015-05-21 | 邹德伟 | Pressure indicator |
| CN108955975A (en) * | 2016-03-02 | 2018-12-07 | 哈尔滨工程大学 | A kind of device for demarcating air valve stem dynamic strain meter |
-
2012
- 2012-10-16 CN CN 201220527496 patent/CN202853843U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015070579A1 (en) * | 2013-11-14 | 2015-05-21 | 邹德伟 | Pressure indicator |
| CN108955975A (en) * | 2016-03-02 | 2018-12-07 | 哈尔滨工程大学 | A kind of device for demarcating air valve stem dynamic strain meter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130403 |