CN203534732U - Strain transmissible pressure gauge - Google Patents
Strain transmissible pressure gauge Download PDFInfo
- Publication number
- CN203534732U CN203534732U CN201320627937.2U CN201320627937U CN203534732U CN 203534732 U CN203534732 U CN 203534732U CN 201320627937 U CN201320627937 U CN 201320627937U CN 203534732 U CN203534732 U CN 203534732U
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- strain
- pressure gauge
- resistance
- transmissible
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- 230000008054 signal transmission Effects 0.000 claims description 3
- 238000009530 blood pressure measurement Methods 0.000 abstract description 2
- 230000008859 change Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000739 chaotic effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The utility model discloses a strain transmissible pressure gauge, and belongs to the field of pressure measurement. The strain transmissible pressure gauge includes a spring tube pressure gauge and a strain sensor. The strain sensor comprises a resistance strain sheet, an amplifier circuit and a voltage/current converter. The resistance strain sheet fits an elastic wave bourdon tube of the spring tube pressure gauge. According to the utility model, the strain transmissible pressure gauge maintains the performance of a conventional pressure gauge, adds an output function, and can output stable synchronization signals so that on-site pressure can be remotely displayed. Meanwhile, the strain transmissible pressure gauge is high in anti-seismic performance and wide in usage range.
Description
Technical field
The utility model belongs to pressure survey field, particularly relates to a kind of strain distance-transmission pressure gauge.
Background technology
Along with scientific and technological fast development, embedded Control technology is widely used in the middle of all trades and professions.Particularly at instrument, instrument industry, from unifunctional analog meter instrument to digitizing, multi-functional, intelligent direction development, pressure test scope is further expanded, production link automaticity improves constantly, need on-the-spot demonstration, center is controlled, and requires instrument to have dual character.Traditional tensimeter can only carry out scene and show, by staff, read pressure value, but this class tensimeter is generally heavier and with being easy to partially fall with backpointer for a long time, and detect by an unaided eye and have error, measuring accuracy is declined, and therefore original tensimeter cannot meet the needs of existing equipment requirement.
Utility model content
Because the above-mentioned defect of prior art, technical problem to be solved in the utility model is to provide a kind of can on-the-spotly demonstration, strain distance-transmission pressure gauge that again can output pressure detection signal.
For achieving the above object, the utility model provides a kind of strain distance-transmission pressure gauge, comprises bourdon gauges and strain transducer; Described strain transducer is comprised of resistance strain gage, amplifying circuit and converter; The elasticity Bourdon tube laminating of described resistance strain gage and described bourdon gauges.
The elasticity Bourdon tube of bourdon gauges is stressed and does the used time, elasticity bowden length of tube and sectional area all can change, resistance strain gage is close on elasticity bowden tube-surface, the resistance of resistance strain gage can change, strain transducer is measured the variation that is added in resistance, can obtain the strained situation of strain metal, then convert thereof into voltage signal output.Adopt above technical scheme, there are on-the-spot indication and two kinds of functions of signal output.Resistance strain gage is close on elasticity bowden tube-surface and is out of shape, highly sensitive and Shockproof anti-corrosion is good, reaches IP65, and assembling and setting is simple.
Further, on the movement of described bourdon gauges, be fixed with mounting bracket, on this mounting bracket, be fixed with circuit board, described amplifying circuit and converter are arranged on this circuit board.
Further, the output end signal line of described converter connects output plug, and the output end signal line of described converter is by the outside signal transmission of output plug.Adopt above technical scheme, can avoid signal wire chaotic, be convenient to plug.
Preferably, described amplifying circuit is two-way high-operational amplifier.Adopt above technical scheme, can compensator bridge the reducing of output, reduce offset voltage and drift simultaneously.
The beneficial effects of the utility model are: the utility model has kept traditional manometric performance, has increased output function, can export synchronism stability signal, make on-the-spot pressure obtain long-range demonstration; The utility model anti-seismic performance is high simultaneously, usable range is wide.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model one embodiment.
Fig. 2 is schematic block circuit diagram of the present utility model.
Fig. 3 is the circuit diagram of strain transducer in the utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail:
As shown in Figure 1 and Figure 2, a kind of strain distance-transmission pressure gauge, comprises bourdon gauges 1 and strain transducer 2; Described bourdon gauges 1 comprises drain pan 12, elasticity Bourdon tube 6, mounting bracket 8, movement 7 and joint 11, described bourdon gauges 1 also comprises plating dish, indicating hand component, and described strain transducer 2 is comprised of resistance strain gage 3, amplifying circuit 4 and converter 5; Described resistance strain gage 3 is fitted with the elasticity Bourdon tube 6 of described bourdon gauges 1, and this elasticity Bourdon tube 6 is connected with joint 11.On the movement 7 of described bourdon gauges 1, be fixed with mounting bracket 8, on this mounting bracket 8, be fixed with circuit board 9, described amplifying circuit 4 and converter 5 are arranged on this circuit board 9.The output end signal line of described converter 5 connects output plug 10, and the output end signal line of described converter 5 is by the outside signal transmission of output plug 10.
The principle of work of resistance strain gage is to be adsorbed on strain resistor on matrix material with mechanical deformation, to produce the phenomenon of change in resistance, is commonly called as resistance strain effect.The resistance value of resistance strain gage can be represented by the formula: ρ=S/L, the resistivity that in formula, ρ is resistance strain gage, the sectional area that S is resistance strain gage, the length that L is resistance strain gage, when resistance strain gage is subject to External Force Acting, its length and sectional area all can change, and can be easy to find out from above formula, and its resistance value can change, while extending if resistance strain gage is subject to External Force Acting, its length increases, and sectional area reduces, and resistance value just can increase; When resistance strain gage is subject to External Force Acting and while shortening, length reduces and cross section increases, and resistance value can reduce.As long as measure the variation of resistance strain gage, can obtain the strained situation of strain resistor foil gauge.
The elasticity Bourdon tube of bourdon gauges is under tested pressure-acting, produce elastic deformation and cause displacement, its displacement is amplified by mechanical transmission mechanism, pass to indicating value parts, pointer indicates corresponding on-the-spot force value on index dial, resistance strain gage is close on elasticity bowden tube-surface simultaneously, by elasticity Bourdon tube under tested pressure-acting, generation elastic deformation changes, its resistance value can change, like this through amplifying circuit and converter, output teletransmission pressure measurement data, for industrial automation provides high-precision control signal, after being connected with suitable circuit with external unit, just can sending required alerting signal or open, the action of the controlled pressures such as shutdown, can command according to technological process, system pressure is controlled within the required range, realize automatically and controlling.
In the present embodiment, described amplifying circuit 4 is two-way high-operational amplifier.As shown in Figure 3, the double operational chip that described amplifying circuit 4 is OPA2277 by resistance R 5, R6, R7 and model forms prime amplifier, can compensator bridge the reducing of output, reduce offset voltage and drift simultaneously.Described converter 5 is by resistance R 8, R9, R10, potentiometer W
f, triode BG, capacitor C 1, C2, C3, commutation diode D2, voltage stabilizing diode D1 and model be XTR106 chip forms; the pin 12 of XTR106 chip is connected with pin 6; for correction of Nonlinear; capacitor C 1, C2 and C3 improve anti-interference; triode BG is used for current conversion, reduces trueness error, and commutation diode D2 adopts the diode that model is 1N4148; preventing that power supply from connecing damages element on the contrary, plays a protective role.
More than describe preferred embodiment of the present utility model in detail.Should be appreciated that those of ordinary skill in the art just can make many modifications and variations according to design of the present utility model without creative work.Therefore, all technician in the art comply with design of the present utility model on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment, all should be in the determined protection domain by claims.
Claims (4)
1. a strain distance-transmission pressure gauge, comprises bourdon gauges (1); It is characterized in that: also comprise strain transducer (2); Described strain transducer (2) is comprised of resistance strain gage (3), amplifying circuit (4) and converter (5); Described resistance strain gage (3) is fitted with the elasticity Bourdon tube (6) of described bourdon gauges (1).
2. strain distance-transmission pressure gauge as claimed in claim 1, it is characterized in that: on the movement (7) of described bourdon gauges (1), be fixed with mounting bracket (8), on this mounting bracket (8), be fixed with circuit board (9), described amplifying circuit (4) and converter (5) are arranged on this circuit board (9).
3. strain distance-transmission pressure gauge as claimed in claim 1 or 2, it is characterized in that: the output end signal line of described converter (5) connects output plug (10), the output end signal line of described converter (5) is by the outside signal transmission of output plug (10).
4. strain distance-transmission pressure gauge as claimed in claim 1 or 2, is characterized in that: described amplifying circuit (4) is two-way high-operational amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320627937.2U CN203534732U (en) | 2013-10-11 | 2013-10-11 | Strain transmissible pressure gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320627937.2U CN203534732U (en) | 2013-10-11 | 2013-10-11 | Strain transmissible pressure gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203534732U true CN203534732U (en) | 2014-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320627937.2U Expired - Lifetime CN203534732U (en) | 2013-10-11 | 2013-10-11 | Strain transmissible pressure gauge |
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| Country | Link |
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| CN (1) | CN203534732U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113340516A (en) * | 2021-06-07 | 2021-09-03 | 中国工程物理研究院总体工程研究所 | Pressure measuring cell |
-
2013
- 2013-10-11 CN CN201320627937.2U patent/CN203534732U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113340516A (en) * | 2021-06-07 | 2021-09-03 | 中国工程物理研究院总体工程研究所 | Pressure measuring cell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220513 Address after: 401321 Yudong textile third village, Banan District, Chongqing Patentee after: CHONGQING BRIGHTY INSTRUMENT Co.,Ltd. Patentee after: BEIJING BRIGHTY INSTRUMENT Co.,Ltd. Address before: 401321 Yudong textile third village, Banan District, Chongqing Patentee before: CHONGQING BRIGHTY INSTRUMENT Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140409 |
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| CX01 | Expiry of patent term |