CN103712729B - Non-solder seals pressure transducer - Google Patents
Non-solder seals pressure transducer Download PDFInfo
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- CN103712729B CN103712729B CN201310698965.8A CN201310698965A CN103712729B CN 103712729 B CN103712729 B CN 103712729B CN 201310698965 A CN201310698965 A CN 201310698965A CN 103712729 B CN103712729 B CN 103712729B
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- pedestal
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- concave station
- sealing ring
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Abstract
The invention discloses a kind of non-solder and seal pressure transducer, seal and test for pressure medium when realizing the non-solder of sensor, described non-solder seals pressure transducer and has pedestal, sealing ring, elastomer, pressure ring；The sealing ring being pressed on pedestal by elastomer by pressure ring to place, and it is fixed on pedestal, utilize the welding that the elastic deformation of sealing ring realizes sensor to seal assembling.Utilize the sensor assembling that the present invention manufactures quick, use safe and reliable.
Description
Technical field
The present invention relates to the non-solder of stainless steel pressure sensibility elasticity body and seal pressure transducer.
Background technology
Traditional rustless steel elastomer pressure transducer manufacture method, it is utilize the means such as laser weld or electron beam welding to be welded together by the rustless steel impulse pedestal of stainless steel pressure sensibility elasticity body Yu material of the same race, reach measured medium sealing effectiveness in elastomeric chamber, it is achieved stress test.
The pressure measurement scope of general rustless steel elastomer pressure transducer is all at more than MPa, and pressure medium is bigger.And adopt the pressure transducer that welded seal manufactures, there is the problems such as slag inclusion, cavity, inadequate, the welding seam bias of fusion penetration in weld seam, weld cracking, pressure leakages can be caused, and when the material of weldment is inconsistent, welding quality more cannot ensure, affects the sensor safety and reliability when practical application.
Chinese patent application publication number is a kind of pressure transducer mounting structure of CN103017956A, but this patent application is the improvement to contact hermetically sealed (non-finger welded seal), changes into contactless, namely carries out isolation buffer by sealing ring.
Summary of the invention
Seal and test for pressure medium when realizing the non-solder of sensor, it is desirable to provide a kind of non-solder seals pressure transducer, this pressure transducer can quickly, reliably seal and assemble.
For achieving the above object, the technical solution used in the present invention is:
Non-solder seals pressure transducer, and it is structurally characterized in that, including
Pedestal, has through tracting pressuring hole；The top of described pedestal has annular stud, is concave station, the concave station bottom surface of this concave station has seal groove in this annular stud；Described stud outer wall has external screw thread；
Sealing ring, is arranged in the seal groove of described pedestal；
Elastomer, has the periphery fixed of annular, annular sealed end and is positioned at the reaction diaphragm on periphery fixed top；The cross section, vertical section of described elastomer is "Ji" type；The lower surface of described sealed end loads down in the concave station on described pedestal and presses described sealing ring；Equipped with external strain resistance and internal strain resistance on described reaction diaphragm；
Pressure ring, has stair-stepping pressure ring hole；The periphery fixed of described elastomer is through described pressure ring hole and is pressed on the concave station bottom surface of described concave station by described pressure ring, makes the bottom surface of described sealing ring and the lower surface of described sealed end, sealing ring and seal groove be respectively formed sealing state.
Thus, described sensor base devises the mode of sealing for be sealed by sealing ring.While the present invention utilizes sealing ring to be subject to the lower surface of sealed end and seal groove bottom surface there is elastic deformation in extruding, reaches sealing ring and forms sealing state with lower surface and seal groove bottom surface, it is achieved tested pressure medium and outside isolation.
The present invention utilizes pressure ring compression seal end, makes sealing ring generation elastic deformation, and forms sealing state with lower surface and seal groove bottom surface.
It is below currently preferred technical scheme:
The inner surface of the upper surface of the sealed end of described elastomer and described pressure ring is fitted, and the pressure ring hole inwall of this pressure ring is provided with female thread, and the female thread in this pressure ring hole is threadeded with the external screw thread of described stud.
Having base thread on the bottom outer wall of described pedestal, described pedestal is arranged on pressure measurement interface by base thread.
Equipped with being used for installing the support of modulate circuit plate and for installing the shell of electric connector on described base outer wall face；Described external strain resistance and internal strain resistance electrically connect with described modulate circuit plate respectively through lead.According to design needs, it is possible to carry out the modulate circuit plate assembling in sensor later stage, shell encapsulation, electric connector Installation And Test.
Above structure, elastomer non-solder of the present invention seals the pedestal 07 of pressure transducer, is mainly used in the pressure measurement interface 17 with measured medium pressure piping and docks, and the various structurally and electrically assemblings for sensor provide support.
Pedestal 07 of the present invention, is fixed on sensor on the pressure measurement interface 17 of measured medium pressure piping by base thread 16, and plays medium-tight effect between sensor and pressure measurement interface 17.Tested pressure medium is imported elastomer 02 intracavity by the tracting pressuring hole 10 on pedestal 07, and acts on pressure-sensitive diaphragm 03.Pressure-sensitive diaphragm 03 stress generation elastic deformation, cause the external strain resistance 03a on pressure-sensitive diaphragm 03 and internal strain resistance 03b change in resistance, external strain resistance 03a and internal strain resistance 03b is pressed the electric potential difference signal that after Wheatstone bridge principle connects, output is linear with pressure medium size, it is achieved the measurement of pressure.
In the present invention, the seal groove 08a on pedestal 07 is mainly used in fixed seal ring 06, and plays end face seal effect when pressure medium is tested.
In the present invention, stud 11 screw thread 12 on pedestal 07 is mainly used in being together by a threaded connection with pressure ring 01, and provides necessary intensity for sensor suffered pulling force when tested media pressure, it is prevented that fracture or deformation occur under pressure.
Sealing ring 06 in the present invention, mainly through elastic deformation, seals for the connection between seal groove bottom surface 08b and elastomer 02 lower surface 05b, it is achieved measured medium and outside isolation.The model of sealing ring 06 and material can be selected according to actual service conditions, such as the temperature range stood, pressure medium size etc., it is possible to select rubber seal, metal o-ring pad etc..
The lower surface 05b of sealed end 05 is pressed on the concave station bottom surface 09b on pedestal 07 by the elastomer 02 in the present invention mainly through pressure ring 01, it is achieved the connection of elastomer and pedestal, and relies on sealing ring to be isolated by pressure medium.
Pressure ring 01 in the present invention is mainly through the concave station bottom surface 09b being pressed on by sealed end 05 on pedestal 07 that is engaged of female thread 01b with external screw thread 12, and utilizes the elastic deformation of sealing ring to form seal isolation with lower surface 05b and seal groove bottom surface 08b.
Described pressure ring 01 compression seal end 05 is closely to be engaged realization by female thread 01b with the external screw thread 12 of stud 11.
Described pressure ring 01, elastomer 02, sealing ring 06, pedestal 07 can be the material manufactures of material of the same race or unlike material each other.
The model of described sealing ring 06 and material do not limit, and only need to meet instructions for use.
The present invention is different from traditional rustless steel elastomer pressure transducer manufacture method, rustless steel elastomer adopts no-welding type encapsulating structure with impulse pedestal, avoid the problems such as the slag inclusion of welding type weld seam existence, cavity, inadequate, the welding seam bias of fusion penetration, and it is absent from the compatibling problem that dissimilar materials welding is merged, it is possible to improve the sensor safety and reliability when practical application.
In a word, the invention solves the problems such as the slag inclusion of traditional welding formula pressure transducer existence, cavity, inadequate, the welding seam bias of fusion penetration, there is the advantage that assembling is quick, safety and reliability is high.
Accompanying drawing explanation
Fig. 1 is the structural representation of pressure ring of the present invention；
Fig. 2 is the structural representation of elastomer of the present invention；
Fig. 3 is the structural representation of sealing ring of the present invention；
Fig. 4 is the structural representation of pedestal of the present invention；
Fig. 5 is the assembling schematic diagram of an embodiment of the present invention；
Fig. 6 is the encapsulation schematic diagram of an embodiment of the present invention.
Wherein:
01-pressure ring；01a-pressure ring hole；01b-female thread；01c-inner surface；02-elastomer；03-pressure-sensitive diaphragm；03a-external strain resistance；03b internal strain resistance；04-periphery fixed；05-sealed end；05a-upper surface；05b-lower surface；06-sealing ring；07-pedestal；08a-seal groove；08b-seal groove bottom surface；09a-circle concave station；09b-concave station bottom surface；10-tracting pressuring hole；11-stud；12-external screw thread；13-support weld；14-shell weld；15-pedestal six side；16-base thread；17-pressure measurement interface.18-support；19-modulate circuit plate；20-lead；21-shell；22-circuit lead；23-electric connector.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is elaborated.
The present invention provides a kind of non-solder and seals pressure transducer, as shown in Figure 5, it has a pedestal 07, first sealing ring 06 shown in Fig. 3 is put into the seal groove 08 of pedestal 07 shown in Fig. 4, then the lower surface 05b of the sealed end 05 of rustless steel elastomer shown in Fig. 2 02 is loaded the circular concave station 09a on pedestal down and push down sealing ring 06.Finally, periphery fixed 04 by the traverse rustless steel elastomer 02 of pressure ring 01 shown in Fig. 1, screw in the stud 11 on pedestal 07, closely it is engaged with the external screw thread 12 of stud 11 by the female thread 01b of pressure ring 01, the inner surface 01c of pressure ring 01 is made to be in close contact with the upper surface 05a of sealed end 05, the lower surface 05a of sealed end 05 and concave station bottom surface 09b close contact, simultaneously, owing to while lower surface 05b and seal groove bottom surface 08b that sealing ring 06 is subject to sealed end 05, elastic deformation occurs in extruding, so that sealing ring 06 forms sealing state with lower surface 05b and seal groove bottom surface 08b, realize tested pressure medium and outside isolation, namely the assembling of sensor is completed to this.Finally, utilize instrument rotating basis six side 15 that sensor is securedly mounted to the pressure measurement interface 17 of measured medium pressure piping, carry out stress test, as shown in Figure 5.As shown in Figure 6, support weld 13 mount support 18 on pedestal 07, draw lead 20 from the external strain resistance 03a on elastomer 02 surface and internal strain resistance 03b, modulate circuit plate 19 is fixed on mount 18, and lead 20 is connected on modulate circuit plate 19；Finally, the shell weld 13 on pedestal 07 assembles shell 21, is connected on electric connector 23 by the circuit lead 22 on modulate circuit plate 19, it is achieved pressure signal is converted to the output of the signal of telecommunication by modulate circuit, and is fixed on by electric connector on shell 21.
The content that above-described embodiment illustrates should be understood to these embodiments only for being illustrated more clearly that the present invention, rather than restriction the scope of the present invention, after having read the present invention, the amendment of the various equivalent form of values of the present invention is all fallen within the application claims limited range by those skilled in the art.
Claims (4)
1. non-solder seals pressure transducer, it is characterized in that, including
Pedestal (07), has through tracting pressuring hole (10)；The top of described pedestal (07) has annular stud (11), is concave station (09a), the concave station bottom surface (09b) of this concave station (09a) has seal groove (08) in this annular stud (11)；Described stud (11) outer wall has external screw thread (12)；
Sealing ring (06), is arranged in the seal groove (08) of described pedestal (07)；
Elastomer (02), has the periphery fixed (04) of annular, annular sealed end (05) and is positioned at the reaction diaphragm (03) on periphery fixed (04) top；The cross section, vertical section of described elastomer (02) is "Ji" type；The lower surface (05b) of described sealed end (05) loads down in the concave station (09a) on described pedestal (07) and presses described sealing ring (06)；Equipped with external strain resistance (03a) and internal strain resistance (03b) on described reaction diaphragm (03)；
Pressure ring (01), has stair-stepping pressure ring hole (01a)；The periphery fixed (04) of described elastomer (02) is through described pressure ring hole (01a) and is pressed on the concave station bottom surface (09b) of described concave station (09a) by described pressure ring (01), makes the bottom surface (08b) of described sealing ring (06) and the lower surface (05b) of described sealed end (05), sealing ring (06) and seal groove (08) be respectively formed sealing state.
2. non-solder according to claim 1 seals pressure transducer, it is characterized in that, the upper surface of the sealed end (05) of described elastomer (02) is fitted with the inner surface (01c) of described pressure ring (01), pressure ring hole (01a) inwall of this pressure ring (01) is provided with female thread (01b), and the female thread (01b) in this pressure ring hole (01a) is threadeded with the external screw thread (12) of described stud (11).
3. non-solder according to claim 1 seals pressure transducer, it is characterized in that having base thread (16) on the bottom outer wall of described pedestal (07), and described pedestal (07) is arranged on pressure measurement interface (17) by base thread (16).
4. non-solder according to claim 1 seals pressure transducer, it is characterized in that, equipped with being used for installing the support (18) of modulate circuit plate (19) and being used for installing the shell (21) of electric connector (23) in described pedestal (07) outside wall surface；Described external strain resistance (03a) and internal strain resistance (03b) electrically connect with described modulate circuit plate (19) respectively through lead (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310698965.8A CN103712729B (en) | 2013-12-18 | 2013-12-18 | Non-solder seals pressure transducer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310698965.8A CN103712729B (en) | 2013-12-18 | 2013-12-18 | Non-solder seals pressure transducer |
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| Publication Number | Publication Date |
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| CN103712729A CN103712729A (en) | 2014-04-09 |
| CN103712729B true CN103712729B (en) | 2016-06-29 |
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| CN201310698965.8A Active CN103712729B (en) | 2013-12-18 | 2013-12-18 | Non-solder seals pressure transducer |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106404271A (en) * | 2015-08-10 | 2017-02-15 | 浙江三花制冷集团有限公司 | Pressure sensor |
| CN105806553A (en) * | 2016-06-02 | 2016-07-27 | 中国工程物理研究院材料研究所 | High-pressure sensor |
| CN108168766B (en) * | 2018-01-09 | 2020-03-27 | 武汉飞恩微电子有限公司 | Heavy-load pressure sensor and manufacturing method thereof |
| CN112082688B (en) * | 2020-08-26 | 2022-04-26 | 上海域丰传感仪器有限公司 | Strain type pressure sensor's absolute pressure packaging structure |
| CN113264084A (en) * | 2021-05-27 | 2021-08-17 | 海宁德科隆电子有限公司 | Track axle counting sensor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2399030C1 (en) * | 2009-07-27 | 2010-09-10 | Открытое акционерное общество "Научно-исследовательский институт физических измерений" | Thin-film pressure sensor |
| CN201892597U (en) * | 2010-09-28 | 2011-07-06 | 刘胜 | Large-range pressure transmitter based on O-shaped ring for sealing |
| CN202547855U (en) * | 2012-04-10 | 2012-11-21 | 武汉神动汽车电子电器有限公司 | Ceramic thick film resistor oil pressure sensor based on novel connection |
| CN203274980U (en) * | 2013-06-03 | 2013-11-06 | 中国电子科技集团公司第四十八研究所 | Film pressure sensor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001023855A2 (en) * | 1999-09-27 | 2001-04-05 | Siemens Aktiengesellschaft | Pressure sensor |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2399030C1 (en) * | 2009-07-27 | 2010-09-10 | Открытое акционерное общество "Научно-исследовательский институт физических измерений" | Thin-film pressure sensor |
| CN201892597U (en) * | 2010-09-28 | 2011-07-06 | 刘胜 | Large-range pressure transmitter based on O-shaped ring for sealing |
| CN202547855U (en) * | 2012-04-10 | 2012-11-21 | 武汉神动汽车电子电器有限公司 | Ceramic thick film resistor oil pressure sensor based on novel connection |
| CN203274980U (en) * | 2013-06-03 | 2013-11-06 | 中国电子科技集团公司第四十八研究所 | Film pressure sensor |
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