CN103712729A - Non-welding-sealed pressure sensor - Google Patents
Non-welding-sealed pressure sensor Download PDFInfo
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- CN103712729A CN103712729A CN201310698965.8A CN201310698965A CN103712729A CN 103712729 A CN103712729 A CN 103712729A CN 201310698965 A CN201310698965 A CN 201310698965A CN 103712729 A CN103712729 A CN 103712729A
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Abstract
The invention discloses a non-welding-sealed pressure sensor. The objective of the invention is to realize medium pressure sealing and testing of a sensor under a non-welding condition. The non-welding-sealed pressure sensor is provided with a base, a sealing ring, an elastic body and a pressing ring; the elastic body is tightly pressed on the sealing ring arranged on the base through the pressing ring and is fixed on the base, and therefore, non-welding sealed assembly of the sensor can be realized through the elastic deformation of the sealing ring. The non-welding-sealed pressure sensor is advantageous in fast assembly as well as safe and reliable use.
Description
Technical field
The present invention relates to the non-welded seal pressure transducer of stainless steel pressure sensibility elasticity body.
Background technology
Traditional stainless steel elastic body pressure transducer manufacture method, to utilize the means such as laser bonding or electron beam welding that the stainless steel impulse pedestal of stainless steel pressure sensibility elasticity body and material of the same race is welded together, reach the sealing effectiveness of measured medium in elastomeric chamber, realize pressure test.
The pressure measurement scope of general stainless steel elastic body pressure transducer is all more than MPa, and pressure medium is larger.And the pressure transducer that adopts welded seal to manufacture, weld seam exist slag inclusion, cavity, fusion penetration not, the problem such as welding seam bias, can cause weld cracking, pressure leakages, and when the material of weldment is inconsistent, welding quality more cannot guarantee, affects the safety and reliability of sensor when practical application.
Chinese patent application publication number is a kind of pressure transducer mounting structure of CN 103017956A, but the just improvement to contact hermetically sealed (non-finger welded seal) of this patented claim, changes into contactlessly, by O-ring seal, carries out isolation buffer.
Summary of the invention
For realizing the pressure medium sealing and test under the non-welding condition of sensor, the present invention aims to provide a kind of non-welded seal pressure transducer, and this pressure transducer can be fast, positiver sealing assembles.
For achieving the above object, the technical solution used in the present invention is:
Non-welded seal pressure transducer, its design feature is to comprise
-pedestal, has the tracting pressuring hole of perforation; The top of described pedestal has annular double-screw bolt, in this annular double-screw bolt, is concave station, on the concave station bottom surface of this concave station, has seal groove; Described double-screw bolt outer wall has external thread;
-O-ring seal, is arranged in the seal groove of described pedestal;
-elastic body, has the sealed end of annular periphery fixed, annular and is positioned at the reaction diaphragm on periphery fixed top; Cross section, described elastomeric longitudinal profile is "Ji" type; The lower surface of described sealed end packs in the concave station on described pedestal down and presses described O-ring seal; External strain resistance and internal strain resistance are housed on described reaction diaphragm;
-pressure ring, has stair-stepping pressure ring hole; Described elastomeric periphery fixed passes described pressure ring hole and by described pressure ring, is pressed on the concave station bottom surface of described concave station, makes the bottom surface of lower surface, O-ring seal and the seal groove of described O-ring seal and described sealed end all form sealing state.
Thus, the mode that described sensor base has designed sealing is for to seal by O-ring seal.When the present invention utilizes O-ring seal to be subject to the lower surface of sealed end and seal groove bottom surface there is elastic deformation in extruding, reaches O-ring seal and lower surface and seal groove bottom surface formation sealing state, realizes tested pressure medium and outside isolation.
The present invention utilizes pressure ring compression seal end, makes O-ring seal generation elastic deformation, and forms sealing state with lower surface and seal groove bottom surface.
Be below the preferred technical scheme of the present invention:
The upper surface of described elastomeric sealed end and the laminating of the inside surface of described pressure ring, the pressure ring hole inwall of this pressure ring is provided with internal thread, and the internal thread in this pressure ring hole is threaded with the external thread of described double-screw bolt.
On the bottom outer wall of described pedestal, have base thread, described pedestal is arranged on pressure measurement interface by base thread.
On described base outer wall face, be equipped with for the support of modulate circuit plate being installed and for the shell of electric connector is installed; Described external strain resistance and internal strain resistance are electrically connected to described modulate circuit plate by internal lead respectively.According to design needs, can carry out the assembling of modulate circuit plate, shell encapsulation, the electric connector Installation And Test in sensor later stage.
By said structure, the pedestal 07 of the non-welded seal pressure transducer of elastic body of the present invention, is mainly used in docking with the pressure measurement interface 17 of measured medium pressure piping, and provides support for the various structures of sensor and electric assembling.
Seal groove 08a in the present invention on pedestal 07 is mainly used in fixed seal ring 06, and plays end face sealing function when pressure medium is tested.
Double-screw bolt 11 screw threads 12 in the present invention on pedestal 07 are mainly used in being together by a threaded connection with pressure ring 01, and for sensor suffered pulling force when the tested media pressure provides necessary intensity, prevent from occurring under pressure fracture or distortion.
O-ring seal in the present invention 06 is main by elastic deformation, for the connection between seal groove bottom surface 08b and elastic body 02 lower surface 05b, seals, and realizes measured medium and outside isolation.The model of O-ring seal 06 and material can be selected according to actual service conditions, as the temperature range standing, pressure medium size etc., can select rubber seal, metal o-ring pad etc.
Described pressure ring 01 compression seal end 05 is that the tight interlock of external thread 12 by internal thread 01b and double-screw bolt 11 realizes.
Described pressure ring 01, elastic body 02, O-ring seal 06, pedestal 07 can be material of the same race or the material manufacture of unlike material each other.
The model of described O-ring seal 06 and material do not limit, and only need meet request for utilization.
The present invention is different from traditional stainless steel elastic body pressure transducer manufacture method, stainless steel elastic body and impulse pedestal adopt no-welding type encapsulating structure, the problems such as slag inclusion, cavity, fusion penetration are inadequate, the welding seam bias the problem includes: of having avoided welded type weld seam problem, and the compatibling problem that does not exist dissimilar materials welding to merge, can improve the safety and reliability of sensor when practical application.
In a word, the invention solves slag inclusion that traditional welding formula pressure transducer exists, cavity, fusion penetration not, the problem such as welding seam bias, 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 elastomeric structural representation of the present invention;
Fig. 3 is the structural representation of O-ring seal 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-internal thread; 01c-inside surface; 02-elastic body; 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-O-ring seal; 07-pedestal; 08a-seal groove; 08b-seal groove bottom surface; The circular concave station of 09a-; 09b-concave station bottom surface; 10-tracting pressuring hole; 11-double-screw bolt; 12-external thread; 13-support welding place; 14-shell weld; 15-pedestal six sides; 16-base thread; 17-pressure measurement interface.18-support; 19-modulate circuit plate; 20-internal lead; 21-shell; 22-circuit lead; 23-electric connector.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is elaborated.
The present invention provides a kind of non-welded seal pressure transducer, as shown in Figure 5, it has a pedestal 07, first O-ring seal shown in Fig. 3 06 is put into the seal groove 08 of pedestal shown in Fig. 4 07, then the lower surface 05b of the sealed end 05 of the elastic body of stainless steel shown in Fig. 2 02 is packed into the circular concave station 09a on pedestal down and pushes down O-ring seal 06.Finally, periphery fixed 04 by pressure ring shown in Fig. 1 01 through stainless steel elastic body 02, screw in the double-screw bolt 11 on pedestal 07, by the internal thread 01b of pressure ring 01 and the tight interlock of the external thread of double-screw bolt 11 12, make the inside surface 01c of pressure ring 01 and the upper surface 05a close contact of sealed end 05, the lower surface 05a of sealed end 05 and concave station bottom surface 09b close contact, simultaneously, when being subject to the lower surface 05b of sealed end 05 and seal groove bottom surface 08b due to O-ring seal 06 there is elastic deformation in extruding, thereby make O-ring seal 06 and lower surface 05b and seal groove bottom surface 08b form sealing state, realize tested pressure medium and outside isolation, to this, completed the assembling of sensor.Finally, utilize instrument rotating basis six sides 15 by the fastening pressure measurement interface 17 that is arranged on measured medium pressure piping of sensor, carry out pressure test, as shown in Figure 5.As shown in Figure 6, support welding place 13 mount supports 18 on pedestal 07, from external strain resistance 03a and the internal strain resistance 03b on elastic body 02 surface, draw internal lead 20, modulate circuit plate 19 is fixed on support 18, and internal lead 20 is connected on modulate circuit plate 19; Finally, the shell weld 13 assembling shells 21 on pedestal 07, are connected to the circuit lead on modulate circuit plate 19 22 on electric connector 23, realize pressure signal and by modulate circuit, are converted to the output of electric signal, and electric connector is fixed on shell 21.
The content that above-described embodiment is illustrated should be understood to these embodiment only for being illustrated more clearly in the present invention, and be not used in, limit the scope of the invention, after having read the present invention, those skilled in the art all fall within the application's claims limited range to the modification of the various equivalent form of values of the present invention.
Claims (4)
1. non-welded seal pressure transducer, is characterized in that, comprises
-pedestal (07), has the tracting pressuring hole (10) of perforation; The top of described pedestal (07) has annular double-screw bolt (11), in this annular double-screw bolt (11), is concave station (09a), on the concave station bottom surface (09b) of this concave station (09a), has seal groove (08); Described double-screw bolt (11) outer wall has external thread (12);
-O-ring seal (06), is arranged in the seal groove (08) of described pedestal (07);
-elastic body (02), has the sealed end (05) of annular periphery fixed (04), annular and is positioned at the reaction diaphragm (03) on periphery fixed (04) top; The cross section, longitudinal profile of described elastic body (02) is "Ji" type; The lower surface (05b) of described sealed end (05) packs in the concave station (09a) on described pedestal (07) down and presses described O-ring seal (06); External strain resistance (03a) and internal strain resistance (03b) are housed on described reaction diaphragm (03);
-pressure ring (01), has stair-stepping pressure ring hole (01a); The periphery fixed (04) of described elastic body (02) passes described pressure ring hole (01a) and by described pressure ring (01), is pressed on the concave station bottom surface (09b) of described concave station (09a), makes described O-ring seal (06) and lower surface (05b), the O-ring seal (06) of described sealed end (05) all form sealing state with the bottom surface (08b) of seal groove (08).
2. non-welded seal pressure transducer according to claim 1, it is characterized in that, the upper surface of the sealed end (05) of described elastic body (02) and the laminating of the inside surface (01c) of described pressure ring (01), pressure ring hole (01a) inwall of this pressure ring (01) is provided with internal thread (01b), and the internal thread (01b) in this pressure ring hole (01a) is threaded with the external thread (12) of described double-screw bolt (11).
3. non-welded seal pressure transducer according to claim 1, is characterized in that, has 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-welded seal pressure transducer according to claim 1, is characterized in that, support (18) for modulate circuit plate (19) are installed is housed and for the shell (21) of electric connector (23) is installed in described pedestal (07) outside wall surface; Described external strain resistance (03a) and internal strain resistance (03b) are electrically connected to described modulate circuit plate (19) by internal lead (20) respectively.
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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| CN103712729A true CN103712729A (en) | 2014-04-09 |
| CN103712729B 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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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106404271A (en) * | 2015-08-10 | 2017-02-15 | 浙江三花制冷集团有限公司 | Pressure sensor |
| CN108168766A (en) * | 2018-01-09 | 2018-06-15 | 武汉飞恩微电子有限公司 | A kind of heavy duty pressure sensor and its manufacturing method |
| CN112082688A (en) * | 2020-08-26 | 2020-12-15 | 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 |
| CN113865774A (en) * | 2021-09-18 | 2021-12-31 | 苏州森斯缔夫传感科技有限公司 | Pressure sensor and manufacturing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2001023855A2 (en) * | 1999-09-27 | 2001-04-05 | Siemens Aktiengesellschaft | Pressure sensor |
| 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 |
-
2013
- 2013-12-18 CN CN201310698965.8A patent/CN103712729B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001023855A2 (en) * | 1999-09-27 | 2001-04-05 | Siemens Aktiengesellschaft | Pressure sensor |
| 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 |
Cited By (7)
| 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 |
| CN108168766A (en) * | 2018-01-09 | 2018-06-15 | 武汉飞恩微电子有限公司 | A kind of heavy duty pressure sensor and its manufacturing method |
| CN112082688A (en) * | 2020-08-26 | 2020-12-15 | 上海域丰传感仪器有限公司 | Strain type pressure sensor's absolute pressure packaging structure |
| 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 |
| CN113865774A (en) * | 2021-09-18 | 2021-12-31 | 苏州森斯缔夫传感科技有限公司 | Pressure sensor and manufacturing method thereof |
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|---|---|
| CN103712729B (en) | 2016-06-29 |
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