CN201653639U - Flameproof type pressure sensor - Google Patents
Flameproof type pressure sensor Download PDFInfo
- Publication number
- CN201653639U CN201653639U CN2010201799790U CN201020179979U CN201653639U CN 201653639 U CN201653639 U CN 201653639U CN 2010201799790 U CN2010201799790 U CN 2010201799790U CN 201020179979 U CN201020179979 U CN 201020179979U CN 201653639 U CN201653639 U CN 201653639U
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- flange
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- shell
- flame proof
- pressure sensor
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Abstract
A flameproof type pressure sensor comprises a sensor; the sensor is arranged in a sealed shell; the shell comprises a barrel body, a front cover and a rear cover; the front end of the barrel body is connected with the front cover; the front side in the center of the front cover is provided with a flange; a plugging core is slidably arranged in the axis bore of the flange; the center of the rear side of the front cover is provided with a counter bore; a detection end of the sensor is arranged in the counter bore; the rear end of the barrel body is provided with the flange and connected with the flanged rear cover through a bolt; a sealing ring is arranged between the flange and the rear cover; one side of the barrel body is provided with a cable interface; the cable interface is provided with a cable sealing and fastening mechanism. The utility model has the advantages: the flameproof type pressure sensor which meets the flameproof requirement can directly match with any flameproof electrical equipment and is used flexibly; the repeated development, the repeated investment and the repeated labor of the mineral sensor are reduced in the practical use and the waste of the social resource is decreased; the cycle of the new product development and the technical construction of the mineral flameproof device is greatly shortened.
Description
Technical field
The utility model relates to a kind of explosion-proof pressure sensor, is mainly used on the equipment of the occasion (under coal mine) that may contain inflammable gas.
Background technology
Used pressure transducer generally all is an intrinsic safety type under the coal mine at present, and inconvenience is arranged in actual use more.By relevant national standard regulation, the intrinsic safety type sensor must be done related authentication with main control system, thereby has limited the dirigibility of mine sensors selection, use.Prolong the construction cycle of new product simultaneously, increased the use cost of mining equipment.
Summary of the invention
The purpose of this utility model provides a kind of explosion-proof pressure sensor, the problem that the dirigibility of selecting, using with the mine sensors that the solution prior art exists is restricted.
The technical solution of the utility model is: comprise sensor, it is characterized in that, described sensor is installed in the airtight shell, this shell is made of cylindrical shell, protecgulum and bonnet, front end at cylindrical shell connects protecgulum, and the central-front side of this protecgulum is provided with flange, and stifled core is slidingly installed in the axle center hole of this flange, rear side central authorities at this protecgulum are provided with counterbore, and the test side of described sensor is installed in this counterbore; Rear end at this cylindrical shell is provided with flange, and is connected with flanged bonnet with bolt, between this flange and bonnet O-ring seal is housed; Side at this cylindrical shell is provided with cable interface, is provided with the cable seal retention mechanism at this cable interface.
Constitute medium flame proof gap between described axle center hole and the stifled core, the length in this medium flame proof gap is greater than 25mm, and spacing is less than 0.5mm.
Be provided with in described bonnet inboard and can cooperate the inward flange that inserts this cylinder back-end inboard, be provided with shell flame proof gap between this inward flange outer peripheral face and cylindrical shell inboard, the length in this shell flame proof gap is greater than 12.5mm, and spacing is less than 0.4mm.
Described cable seal retention mechanism comprises elastic seal ring, packing ring and pressure pipe, in the mouth of described cable interface elastic seal ring, packing ring and sleeve bolt outwards is installed successively, and the inboard of this sleeve bolt and cable interface is by being threaded.
The beneficial effects of the utility model are: with conventional sensors according to electrical equipment flame proof code requirement under the coal mine, pressure medium signal and two aspects of electric signal to sensor are carried out the flame proof processing, sensor and explosion gas are isolated fully, satisfy the not flame proof requirement of the outer explosion gas of detonation chamber of explosion-proof chamber implode fully, finish the flame proof transmission of measured medium pressure signal and the flame proof transmittance process of electric signal.Both satisfy the mine explosion-suppression code requirement thereby reach, satisfy the purpose of sensor function again, make sensor as the flexible use of other flame proof electrical equipment, can be supporting with any explosion-proof electric apparatus.
Description of drawings
Fig. 1 is sectional structure synoptic diagram of the present utility model (the A-A cut-open view of Fig. 2);
Fig. 2 is the right view (broken section) of Fig. 1.
Embodiment
Referring to Fig. 1 and Fig. 2, the utility model is installed in the pressure transducer 4 of routine in the one airtight shell, this shell is made of cylindrical shell 3, protecgulum 2 and bonnet 8, front end at cylindrical shell 3 connects protecgulum 2, the central-front side of this protecgulum 2 is provided with flange, the stifled core 1 that is slidingly installed in the axle center hole of this flange is provided with counterbore in the rear side central authorities of this protecgulum 3, and the test side of described sensor 4 is installed by screw thread in this counterbore.Be provided with flange 6 in the rear end of this cylindrical shell 3, and be connected with flanged bonnet 8, between this flange 6 and bonnet 8, O RunddichtringO 14 is housed with bolt 7.Side at this cylindrical shell 3 is provided with cable interface 11, is provided with the cable seal retention mechanism at this cable interface 11.
Described cable seal retention mechanism comprises elastic seal ring 9, (putting down) packing ring 16 and the sleeve bolt 10 of tubulose, in the mouth of described cable interface 11, elastic seal ring 9, packing ring 16 and sleeve bolt 10 outwards are installed successively, the inboard of this sleeve bolt 10 and cable interface 11 is by being threaded, by packing ring 16 elastic seal ring 9 is compressed, make it hold the cable that central authorities are passed tightly, reach the purpose of sealing flame proof.
Constitute medium flame proof gap 13 between the axle center hole of described protecgulum 2 central-front side flanges and the stifled core 1, the length in this medium flame proof gap 13 is greater than 25mm, and spacing is less than 0.5mm, to satisfy the flame proof requirement between measured medium and the inner electrical equipment.
Be provided with in described bonnet 8 inboards and can cooperate the inward flange 15 that inserts this cylinder back-end inboard, between these inward flange 15 outer peripheral faces and cylindrical shell 3 inboards, be provided with shell flame proof gap 5, the length in this shell flame proof gap 5 is greater than 12.5mm, spacing is less than 0.4mm, with the flame proof requirement between the electrical equipment that satisfies environment and enclosure.
Flame proof principle of the present utility model: the sensor 4 in the flameproof enclosure all passes through flame proof with all extraneous passages and handles, and three aspects are arranged:
1, the structure in described shell flame proof gap 5 can satisfy the GB3836.2-2000 requirement.
2, cable seal retention mechanism cable is introduced the requirement that flame proof can satisfy GB GB3836.1-2000 appendix D.
3, the explosion suppresion surface of measured medium (constituting medium flame proof gap 13 between the axle center hole of protecgulum 2 central-front side flanges and the stifled core 1) meets the requirement (GB3836.2-2000) of relevant GB.
The utility model adopts above-mentioned explosion separation structure, with conventional sensors according to electrical equipment flame proof code requirement under the coal mine, pressure medium signal and two aspects of electric signal to sensor are carried out the flame proof processing, sensor and explosion gas are isolated fully, satisfy the not flame proof requirement of the outer explosion gas of detonation chamber of explosion-proof chamber implode fully, finish the flame proof transmission of measured medium pressure signal and the flame proof transmittance process of electric signal.Both satisfy the mine explosion-suppression code requirement thereby reach, satisfy the purpose of sensor function again, make sensor as the flexible use of other flame proof electrical equipment, can be supporting with any explosion-proof electric apparatus.
Claims (3)
1. explosion-proof pressure sensor, comprise sensor, it is characterized in that, described sensor is installed in the airtight shell, and this shell is made of cylindrical shell, protecgulum and bonnet, connects protecgulum at the front end of cylindrical shell, the central-front side of this protecgulum is provided with flange, the stifled core that is slidingly installed in the axle center hole of this flange is provided with counterbore in the rear side central authorities of this protecgulum, and the test side of described sensor is installed in this counterbore; Rear end at this cylindrical shell is provided with flange, and is connected with flanged bonnet with bolt, between this flange and bonnet O-ring seal is housed; Side at this cylindrical shell is provided with cable interface, is provided with the cable seal retention mechanism at this cable interface;
Constitute medium flame proof gap between described axle center hole and the stifled core, the length in this medium flame proof gap is greater than 25mm, and spacing is less than 0.5mm.
2. explosion-proof pressure sensor according to claim 1, it is characterized in that, be provided with in described bonnet inboard and can cooperate the inward flange that inserts this cylinder back-end inboard, between this inward flange outer peripheral face and cylindrical shell inboard, be provided with shell flame proof gap, the length in this shell flame proof gap is greater than 12.5mm, and spacing is less than 0.4mm.
3. explosion-proof pressure sensor according to claim 1, it is characterized in that, described cable seal retention mechanism comprises elastic seal ring, packing ring and pressure pipe, in the mouth of described cable interface elastic seal ring, packing ring and sleeve bolt outwards are installed successively, the inboard of this sleeve bolt and cable interface is by being threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201799790U CN201653639U (en) | 2010-05-06 | 2010-05-06 | Flameproof type pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201799790U CN201653639U (en) | 2010-05-06 | 2010-05-06 | Flameproof type pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201653639U true CN201653639U (en) | 2010-11-24 |
Family
ID=43118881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201799790U Expired - Fee Related CN201653639U (en) | 2010-05-06 | 2010-05-06 | Flameproof type pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201653639U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108063407A (en) * | 2017-11-23 | 2018-05-22 | 中国电子科技集团公司第四十八研究所 | A kind of outgoing line device of sensor cable |
| CN108731872A (en) * | 2017-11-15 | 2018-11-02 | 江苏核电有限公司 | A kind of nuclear power plant containment shell seal tightness test device for pressure measurement |
-
2010
- 2010-05-06 CN CN2010201799790U patent/CN201653639U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108731872A (en) * | 2017-11-15 | 2018-11-02 | 江苏核电有限公司 | A kind of nuclear power plant containment shell seal tightness test device for pressure measurement |
| CN108063407A (en) * | 2017-11-23 | 2018-05-22 | 中国电子科技集团公司第四十八研究所 | A kind of outgoing line device of sensor cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Beijing China Coal shield equipment Technology Co., Ltd. Assignor: Zhou Heping|Wang Zhimin Contract record no.: 2011990000303 Denomination of utility model: Diffused silicon gage pressure explosion-proof pressure sensor Granted publication date: 20101124 License type: Exclusive License Record date: 20110422 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101124 Termination date: 20130506 |