CN210719509U - Zero-adjustable miniature high-protection pressure transmitter - Google Patents
Zero-adjustable miniature high-protection pressure transmitter Download PDFInfo
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- CN210719509U CN210719509U CN201922031066.8U CN201922031066U CN210719509U CN 210719509 U CN210719509 U CN 210719509U CN 201922031066 U CN201922031066 U CN 201922031066U CN 210719509 U CN210719509 U CN 210719509U
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Abstract
The utility model relates to a zero-adjustable miniature high-protection pressure transmitter, which comprises a base, an elastic body, a heat-radiating aluminum sleeve, a strain gauge, a connecting rod, a lead wire, a compensation plate, a circuit board, a cast aluminum shell, a connecting terminal, a zero-adjusting potentiometer and a waterproof joint; the elastic body is welded with the base, one end of the connecting rod is in threaded connection with the base, the heat dissipation aluminum sleeve is installed on the connecting rod, and the other end of the connecting rod is fixedly connected with the cast aluminum shell; and the waterproof joint is in threaded sealing connection with the cast aluminum shell. Through the utility model discloses, when the elastomer atress takes place the stress variation, the foil gage also produces deformation together, makes the resistance value of foil gage change to the voltage that makes to add on resistance changes. Connecting the resistance signal to the compensation plate through a lead, and amplifying through a subsequent circuit board to obtain a current signal; the signal output by the circuit board can be connected with the waterproof connector through a wire and transmitted out.
Description
Technical Field
The utility model relates to a miniature high protection pressure changer of can zeroing belongs to sensor technical field.
Background
In typical hydraulic and pneumatic measurements, the external environment of the test point is harsh, and zero output adjustment after installation may be required due to the influence of field conditions. In order to solve a series of problems of the pressure transmitter in the pressure testing process, generally, the pressure transmitter with a conventional 2088 shell and a zero setting circuit is adopted, so that the pressure transmitter can have a higher protection level and has a field zero setting function. However, in some application places, the method is influenced by the installation space of equipment and the diversification of the tested media, so that the conventional 2088 pressure transmitter cannot meet the field test and installation requirements.
The novel zero-adjustable miniature high-protection pressure transmitter solves the series of problems, is suitable for liquid and gas pressure measurement in most industries, has a field zero-adjusting function, has a protection grade reaching IP67, can meet the pressure measurement of various corrosive media due to the all-welded strain design, works millions of times, and can be widely applied to various hydraulic and air pressure measurements.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the above-mentioned current problem, provide a miniature high protection pressure transmitter of can zeroing.
The utility model aims at realizing like this, a miniature high protection pressure transmitter of can zeroing, characterized by: the device comprises a base, an elastic body, a heat dissipation aluminum sleeve, a strain gauge, a connecting rod, a lead, a compensation plate, a circuit board, a cast aluminum shell, a wiring terminal, a zero-setting potentiometer and a waterproof joint;
the elastic body is welded with the base, one end of the connecting rod is in threaded connection with the base, the heat dissipation aluminum sleeve is installed on the connecting rod, and the other end of the connecting rod is fixedly connected with the cast aluminum shell;
the waterproof connector is in threaded sealing connection with the cast aluminum shell, the strain gauge is attached to the elastic body in a front surface patch mode, the strain gauge penetrates through the connecting rod through a lead and then is connected with the compensation plate, the compensation plate is fixed in the cast aluminum shell, the circuit board is installed on the compensation plate, the circuit board is provided with the zero-setting potentiometer and the wiring terminal, and the cable penetrates through the waterproof connector and is connected with the wiring terminal.
The base is made of metal 304 or 316L and is integrally machined and formed.
The elastomer is made of 17-4PH alloy.
The elastic body and the base are welded through argon arc welding.
The other end of the connecting rod is fixedly connected with the cast aluminum shell through threads, waterproof glue is added at each connecting thread for sealing, and the connecting rod is fixed through a locking nut.
The compensating plate is provided with a compensating plate fixing hole, a first fixing hole matched with the compensating plate fixing hole is formed in the cast aluminum shell, and a first bolt is further arranged and sequentially penetrates through the compensating plate fixing hole to be screwed in the first fixing hole, so that the compensating plate is screwed and fixed in the cast aluminum shell through the bolt.
The circuit board is provided with a circuit board fixing hole, a second fixing hole matched with the circuit board fixing hole is formed in the cast aluminum shell, and a second bolt is further arranged and sequentially penetrates through the circuit board fixing hole to be screwed in the second fixing hole, so that the circuit is screwed and fixed in the cast aluminum shell through the bolt.
Still be equipped with the protection apron in the cast aluminium shell, the protection apron is fixed in on the circuit board.
The circuit board is provided with a second circuit board fixing hole, the protective cover plate is provided with a protective cover plate fixing hole, a third bolt is further arranged, the third bolt sequentially penetrates through the protective cover plate fixing hole and is screwed to the second circuit board fixing hole, and the protective cover plate penetrates through the second circuit board fixing hole through the third bolt and is fixed on the circuit board.
The utility model discloses structure, convenient to use, through the utility model discloses, this device provides a miniature high protection pressure transmitter of adjustable zero, including base, elastomer, circuit board, compensating plate, strainometer, lead wire, connecting rod, heat dissipation aluminium cover, protective cover board, zero setting potentiometre, binding post, miniature cast aluminium shell, water joint, lock nut etc.. Wherein, the base is integrally formed by metal 304 or 316L material, and the elastomer is 17-4PH alloy material; the elastic body and the base are welded through argon arc welding, one end of the connecting rod is in threaded connection with the base, the heat-dissipation aluminum sleeve is arranged on the connecting rod, the other end of the connecting rod is fixedly connected with the cast aluminum shell through threads, waterproof glue is added at each connecting thread for sealing, and the waterproof glue is fixed through a locking nut; the waterproof joint is connected with the cast aluminum shell in a threaded sealing manner. The strainometer adopts the positive paster form to paste on the elastomer, and the strainometer passes after the connecting rod through the lead wire and is connected with the compensating plate, and the compensating plate passes through the nut to be fixed in miniature cast aluminium shell, and the circuit board passes through the nut to be installed on the compensating plate, is furnished with zero adjustment potentiometre, binding post on the circuit board, and the field user can pass the cable conductor waterproof connection with binding post is connected, convenient and fast.
The novel design has a reasonable and simple structure, the 17-4PH alloy steel material can be used as an elastomer, the high-precision strain gauge is used as a pressure measuring element, the strain gauge is tightly bonded on the elastomer generating mechanical strain through a special adhesive, and the strain gauge is completely bonded with the elastomer and achieves the optimal pressure sensing effect through the processes of high-temperature curing, aging and the like; the pressure measurement at the temperature of-40-125 ℃ can be met, and the measurement precision reaches 0.1% FS; when the elastic body is stressed and changes in stress, the strain gauge is deformed together, so that the resistance value of the strain gauge is changed, and the voltage applied to the resistor is changed. The resistance value change of the strain gauge is usually small when the strain gauge is stressed, generally the strain gauge forms a strain bridge, a resistance signal is connected into a compensation plate through a lead, and the resistance signal is amplified through a subsequent circuit board to obtain a current signal; the signal output by the circuit board can be connected with the waterproof connector through a wire and transmitted out.
1) The structure is characterized in that: the strain gauge and the elastic piece adopt a front surface patch form, and the base, the heat dissipation aluminum sleeve and the miniature cast aluminum shell are compactly connected through the connecting rod, so that the product is compact, small and attractive.
2) The material characteristics are as follows: the liquid receiving part of the sensor is made of stainless steel materials, wherein the materials are 304 stainless steel or 316L stainless steel respectively, and the elastomer is 17-4PH alloy steel or 15-5PH alloy steel. The heat dissipation sleeve is made of aluminum materials, and the shell is made of cast aluminum.
3) The pressure sensing element: pressure transmitters all use high precision strain gauges as load cells.
4) Electrical output mode: output signals of 4-20MA, 0-10V, etc. can be used. The portable wiring terminal is more convenient to operate in the wiring process, and the miniature cast aluminum shell and the metal waterproof connector with higher protection grade ensure the protection of a product circuit part.
5) The potentiometer capable of being adjusted to zero is installed on the circuit board, and zero adjustment operation can be conveniently carried out on site.
Drawings
Fig. 1 is a schematic structural view of the present invention;
wherein: the device comprises a base 1, an elastic body 2, a heat dissipation aluminum sleeve 3, a strain gauge 4, a connecting rod 5, a lead 6, a compensation plate 7, a circuit board 8, a cast aluminum shell 9, a wiring terminal 10, a zero-setting potentiometer 11, a protective cover plate 12 and a waterproof joint 13.
Detailed Description
The technical solution in the examples of the present invention will be described in detail below with reference to the accompanying drawings in the examples of the present invention.
A zero-adjustable miniature high-protection pressure transmitter comprises a base 1, an elastic body 2, a heat-dissipation aluminum sleeve 3, a strain gauge 4, a connecting rod 5, a lead 6, a compensation plate 7, a circuit board 8, a cast aluminum shell 9, a wiring terminal 10, a zero-adjusting potentiometer 11 and a waterproof joint 13; the elastic body 2 is welded with the base 1, one end of the connecting rod 5 is in threaded connection with the base 1, the heat-dissipation aluminum sleeve 3 is installed on the connecting rod 5, and the other end of the connecting rod 5 is fixedly connected with the cast aluminum shell 9; waterproof joint 13 and cast aluminium shell 9 threaded seal connect, strainometer 4 adopts the positive paster form to paste on elastomer 2, strainometer 4 passes connecting rod 5 through lead wire 6 and is connected with compensating plate 7, and compensating plate 7 is fixed in cast aluminium shell 9, and circuit board 8 is installed on compensating plate 7, is furnished with zero-setting potentiometre 11, binding post 10 on the circuit board 8, and the cable conductor passes waterproof joint 13 and is connected with binding post 10.
Further, the base 1 is made of metal 304 or 316L and is integrally formed. The elastomer 2 is made of 17-4PH alloy material. The elastic body 2 and the base 1 are welded through argon arc welding. The other end of the connecting rod 5 is fixedly connected with the cast aluminum shell 9 through threads, waterproof glue is added at each connecting thread for sealing, and the connecting rod is fixed through a locking nut 14. The compensation plate 7 is provided with a compensation plate fixing hole, a first fixing hole matched with the compensation plate fixing hole is formed in the cast aluminum shell 9, and a first bolt sequentially penetrates through the compensation plate fixing hole and is screwed in the first fixing hole, so that the compensation plate 7 is screwed and fixed in the cast aluminum shell 9 through the bolt. The circuit board 8 is provided with a circuit board fixing hole, the cast aluminum shell 9 is internally provided with a second fixing hole matched with the circuit board fixing hole, and the cast aluminum shell is also provided with a second bolt, and the second bolt sequentially penetrates through the circuit board fixing hole and is screwed in the second fixing hole, so that the circuit board 8 is screwed and fixed in the cast aluminum shell 9 through the bolt. A protective cover plate 12 is also arranged in the cast aluminum shell 9, and the protective cover plate 12 is fixed on the circuit board 8. The protective cover 12 is mainly used to protect the exposed electronic components on the circuit board 8 from being touched during the process of cover opening, zero setting and wiring. Set up the second circuit board fixed orifices on the circuit board 8, set up the protective cover board fixed orifices on the protective cover board 12, still be provided with the third bolt, the third bolt passes the protective cover board fixed orifices in proper order and screws in the second circuit board fixed orifices, and the protective cover board 12 passes the second circuit board fixed orifices through the third bolt and fixes on circuit board 8.
Claims (9)
1. The utility model provides a miniature high protection pressure transmitter of adjustable zero which characterized by: the device comprises a base (1), an elastic body (2), a heat dissipation aluminum sleeve (3), a strain gauge (4), a connecting rod (5), a lead (6), a compensation plate (7), a circuit board (8), a cast aluminum shell (9), a wiring terminal (10), a zero-setting potentiometer (11) and a waterproof joint (13);
the elastic body (2) is welded with the base (1), one end of the connecting rod (5) is in threaded connection with the base (1), the heat-dissipation aluminum sleeve (3) is installed on the connecting rod (5), and the other end of the connecting rod (5) is fixedly connected with the cast aluminum shell (9);
waterproof joint (13) and cast aluminium shell (9) thread sealing connection, strainometer (4) adopt positive paster form to paste on elastomer (2), strainometer (4) are passed through lead wire (6) and are connected with compensating plate (7) after connecting rod (5), compensating plate (7) are fixed in cast aluminium shell (9), circuit board (8) are installed on compensating plate (7), be furnished with zero adjustment potentiometre (11) on circuit board (8), binding post (10), the cable conductor passes waterproof joint (13) and is connected with binding post (10).
2. The miniature high protection pressure transmitter of claim 1, wherein: the base (1) is integrally formed by metal 304 or 316L materials.
3. The miniature high protection pressure transmitter of claim 1, wherein: the elastomer (2) is made of 17-4PH alloy material.
4. The miniature high protection pressure transmitter of claim 1, wherein: the elastic body (2) and the base (1) are welded through argon arc welding.
5. The miniature high protection pressure transmitter of claim 1, wherein: the other end of the connecting rod (5) is fixedly connected with the cast aluminum shell (9) through threads, waterproof glue is added at each connecting thread for sealing, and the connecting rod is fixed through a locking nut (14).
6. The miniature high protection pressure transmitter of claim 1, wherein: be equipped with the compensating plate fixed orifices on compensating plate (7), be equipped with the first fixed orifices that matches with the compensating plate fixed orifices in cast aluminium shell (9), still be equipped with first bolt, first bolt passes the compensating plate fixed orifices in proper order and screws in first fixed orifices for compensating plate (7) are screwed through the bolt and are fixed in cast aluminium shell (9).
7. The miniature high protection pressure transmitter of claim 1, wherein: the circuit board fixing hole is formed in the circuit board (8), a second fixing hole matched with the circuit board fixing hole is formed in the cast aluminum shell (9), a second bolt is further arranged, the second bolt sequentially penetrates through the circuit board fixing hole and is screwed in the second fixing hole, and the circuit board (8) is screwed and fixed in the cast aluminum shell (9) through the bolt.
8. The miniature high protection pressure transmitter of claim 1, wherein: and a protective cover plate (12) is also arranged in the cast aluminum shell (9), and the protective cover plate (12) is fixed on the circuit board (8).
9. The miniature high protection pressure transmitter of claim 1, wherein: the circuit board (8) is provided with a second circuit board fixing hole, the protective cover plate (12) is provided with a protective cover plate fixing hole, a third bolt is further arranged, the third bolt sequentially penetrates through the protective cover plate fixing hole to be screwed in the second circuit board fixing hole, and the protective cover plate (12) penetrates through the second circuit board fixing hole through the third bolt to be fixed on the circuit board (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922031066.8U CN210719509U (en) | 2019-11-22 | 2019-11-22 | Zero-adjustable miniature high-protection pressure transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922031066.8U CN210719509U (en) | 2019-11-22 | 2019-11-22 | Zero-adjustable miniature high-protection pressure transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210719509U true CN210719509U (en) | 2020-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922031066.8U Active CN210719509U (en) | 2019-11-22 | 2019-11-22 | Zero-adjustable miniature high-protection pressure transmitter |
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| CN (1) | CN210719509U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111426414A (en) * | 2020-06-10 | 2020-07-17 | 南京沃天科技有限公司 | Pressure transmitter base with gluing boss |
-
2019
- 2019-11-22 CN CN201922031066.8U patent/CN210719509U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111426414A (en) * | 2020-06-10 | 2020-07-17 | 南京沃天科技有限公司 | Pressure transmitter base with gluing boss |
| CN111426414B (en) * | 2020-06-10 | 2020-10-20 | 南京沃天科技有限公司 | Pressure transmitter base with gluing boss |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A miniature high protection pressure transmitter with adjustable zero Effective date of registration: 20220118 Granted publication date: 20200609 Pledgee: China Construction Bank Corporation Yizheng sub branch Pledgor: JIANGSU SHENGSHIMING TECHNOLOGY Co.,Ltd. Registration number: Y2022980000673 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230129 Granted publication date: 20200609 Pledgee: China Construction Bank Corporation Yizheng sub branch Pledgor: JIANGSU SHENGSHIMING TECHNOLOGY Co.,Ltd. Registration number: Y2022980000673 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A zero-adjustable micro-high protection pressure transmitter Effective date of registration: 20230201 Granted publication date: 20200609 Pledgee: China Construction Bank Corporation Yizheng sub branch Pledgor: JIANGSU SHENGSHIMING TECHNOLOGY Co.,Ltd. Registration number: Y2023980031933 |