CN202442838U - Mine explosion-proof pressure sensor - Google Patents
Mine explosion-proof pressure sensor Download PDFInfo
- Publication number
- CN202442838U CN202442838U CN2012200467674U CN201220046767U CN202442838U CN 202442838 U CN202442838 U CN 202442838U CN 2012200467674 U CN2012200467674 U CN 2012200467674U CN 201220046767 U CN201220046767 U CN 201220046767U CN 202442838 U CN202442838 U CN 202442838U
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Abstract
The utility model provides a mine explosion-proof pressure sensor. A thread at the detection end of a pressure transmitter is in screwed connection with a thread in a counter bore; the upper end of an upper cover is fixedly connected with the lower end of a cable communication joint; an elastic sealing ring is arranged on the lower part inside the cable communication joint; a compression nut is in threaded connection with the cable communication joint; and a gasket is arranged between the elastic sealing ring and the compression unit. According to the mine explosion-proof pressure sensor, the pressure signal and the electric signal of an ordinary sensor are subjected to explosion-proof processing according to underground electrical appliance specification requirements, so that the sensor is completely isolated from explosive gas, the explosion-proof requirement is met, and the explosion-proof transmission process of the pressure signal and the electric signal to be detected is finished. Accordingly, the mine explosion-proof specification requirements are met, the purpose of realizing the function of the sensor is also achieved, and the mine explosion-proof pressure sensor can be used in conjunction with any explosion-proof electrical appliance in a matching manner. The mine explosion-proof pressure sensor is small in volume, compact in structure, firm and durable, is quick and convenient to mount, and has good medium compatibility.
Description
Technical field
The utility model relates to a kind of flame-proof mine pressure transducer, belongs to sensor technical field.
Background technology
Used pressure transducer generally all is an intrinsic safety type under the existing coal mine.In actual use, installation, maintenance, replacing have inconvenience more, and impact resistance is low, and the aspects such as dirigibility of the stability of product, interchangeability, selection are restricted, and have increased the use cost of equipment.
Summary of the invention
The purpose of the utility model is to install in actual use in order to solve under the existing coal mine used pressure transducer, safeguard, change inconvenience is arranged more; Impact resistance is low; The aspects such as dirigibility of the stability of product, interchangeability, selection are restricted; Increased the problem of equipment use cost, and then a kind of flame-proof mine pressure transducer is provided.
The purpose of the utility model realizes through following technical scheme:
A kind of flame-proof mine pressure transducer comprises: cylindrical shell, loam cake, the stifled core that can slide up and down, pressure unit, compression spring, ready-packaged joint, bolt, O-ring seal, cable communicating joint, elastic seal ring, packing ring and gland nut, and the lower end external flange of said cylindrical shell partly is provided with the ready-packaged joint of being convenient to install; Ready-packaged joint inside is provided with axle center hole and counterbore; In axle core hole, the stifled core that can slide up and down is installed, compression spring is installed in the counterbore, the upper end of cylindrical shell is provided with flange; Be connected by bolt between the flange of loam cake and cylindrical shell; Between the flange of cylindrical shell and the loam cake O-ring seal is housed, pressure unit is arranged in the cylindrical shell, and the screw thread in the screw thread of pressure unit test side and the counterbore spins; The lower end of the upper end of loam cake and cable communicating joint is affixed; Bottom in the cable communicating joint is provided with elastic seal ring, and gland nut is threaded with the cable communicating joint, is provided with packing ring between elastic seal ring and the gland nut.
The beneficial effect of the utility model is: with the sensor of routine according to electrical equipment code requirement under the coal mine; Pressure 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 flame proof requirement, accomplish the flame proof transmittance process of tested pressure signal and electric signal.Both meet the mine explosion-suppression code requirement thereby reach, satisfy the purpose that realizes sensor function again, can the supporting use of direct and any explosion-proof electric apparatus.The utility model volume is little, compact conformation, sturdy and durable; Install fast, be convenient to safeguard, impact resistance is high, convenient and have a good media compatibility property; Improve the dirigibility of stability, interchangeability and the selection of product simultaneously, reduced the use cost of equipment.
Description of drawings
Fig. 1 is the cross-sectional view of a kind of flame-proof mine pressure transducer of the utility model.
Fig. 2 is the vertical view of loam cake 2.
Embodiment
To combine accompanying drawing that the utility model is done further detailed description below: present embodiment provided detailed embodiment, but the protection domain of the utility model is not limited to following embodiment being to implement under the prerequisite with the utility model technical scheme.
As depicted in figs. 1 and 2; A kind of flame-proof mine pressure transducer that present embodiment is related comprises: cylindrical shell 1, loam cake 2, can slide up and down stifled core 3, pressure unit 4, compression spring 5, ready-packaged joint 6, bolt 7, O-ring seal 8, cable communicating joint 9, elastic seal ring 10, packing ring 11 and gland nut 12, and the lower end external flange of said cylindrical shell 1 partly is provided with the ready-packaged joint of being convenient to install 6; Ready-packaged joint 6 inside are provided with axle center hole and counterbore; The stifled core 3 that can slide up and down is installed in axle core hole, compression spring 5 is installed in the counterbore, the upper end of cylindrical shell 1 is provided with flange; Be connected by bolt 7 between the flange of loam cake 2 and cylindrical shell 1; Between the flange of cylindrical shell 1 and the loam cake 2 O-ring seal 8 is housed, pressure unit 4 is arranged in the cylindrical shell 1, and the screw thread in the screw thread of pressure unit 4 test sides and the counterbore spins; The lower end of the upper end of loam cake 2 and cable communicating joint 9 is affixed; Bottom in the cable communicating joint 9 is provided with elastic seal ring 10, and gland nut 12 is threaded with cable communicating joint 9, is provided with packing ring 11 between elastic seal ring 10 and the gland nut 12.
Said gland nut 12 is connected with cable communicating joint 9 inside threads, through packing ring 11 elastic seal ring 10 is compressed, and makes it hold the purpose that cable that gland nut 12 and cable communicating joint 9 central authorities pass reaches the sealing flame proof tightly.
Constitute medium flame proof gap between said cylindrical shell 1 lower end ready-packaged joint, 6 inner axes holes and the stifled core 3; The length in said this flame proof gap equals greater than 25mm; Gap between ready-packaged joint 6 inner axes holes and the stifled core 3 is less than 0.5mm, to satisfy the flame proof gap between medium to be detected and the inner electrical equipment.
The downside of said loam cake 2 is provided with inward flange; Form the flame proof gap between said inward flange neighboring and cylindrical shell 1 inwall; The length in said this flame proof gap equals greater than 12.5mm; Gap between said inward flange neighboring and cylindrical shell 1 inwall is less than 0.4mm, to satisfy the flame proof requirement between environment and the enclosure electrical equipment.
Its following three the aspect requirements up to specification of the explosion insulation performance of the utility model.
1, the flame proof gap of described cylindrical shell and loam cake meets the GB3836.2-2000 requirement.
2, the flame proof gap that constitutes between the axle center hole of described cylindrical shell lower end and the stifled core meets the GB3836.2-2000 requirement.
3, cable seal fastening structure, cable is introduced the requirement that flame proof satisfies GB3836.12000 appendix D.
The above; Be merely the preferable embodiment of the utility model; These embodiments all are based on the different implementations under the utility model general idea, and the protection domain of the utility model is not limited thereto, and any technician who is familiar with the present technique field is in the technical scope that the utility model discloses; The variation that can expect easily or replacement all should be encompassed within the protection domain of the utility model.Therefore, the protection domain of the utility model should be as the criterion with the protection domain of claims.
Claims (3)
1. flame-proof mine pressure transducer, comprising: cylindrical shell, loam cake, the stifled core that can slide up and down, pressure unit, compression spring, ready-packaged joint, bolt, O-ring seal, cable communicating joint, elastic seal ring, packing ring and gland nut is characterized in that; The lower end external flange of said cylindrical shell partly is provided with the ready-packaged joint of being convenient to install, and ready-packaged joint inside is provided with axle center hole and counterbore, in axle core hole, the stifled core that can slide up and down is installed; Compression spring is installed in the counterbore; The upper end of cylindrical shell is provided with flange, is connected by bolt between the flange of loam cake and cylindrical shell, between the flange of cylindrical shell and the loam cake O-ring seal is housed; Pressure unit is arranged in the cylindrical shell; Screw thread in the screw thread of pressure unit test side and the counterbore spins, and the lower end of the upper end of loam cake and cable communicating joint is affixed, and the bottom in the cable communicating joint is provided with elastic seal ring; Gland nut is threaded with the cable communicating joint, is provided with packing ring between elastic seal ring and the gland nut.
2. flame-proof mine pressure transducer according to claim 1; It is characterized in that; Constitute medium flame proof gap between ready-packaged joint inner axes hole, said cylindrical shell lower end and the stifled core; The length in said this flame proof gap equals greater than 25mm, and the gap between ready-packaged joint inner axes hole and the stifled core is less than 0.5mm.
3. flame-proof mine pressure transducer according to claim 2; It is characterized in that; The downside of said loam cake is provided with inward flange; Form the flame proof gap between said inward flange neighboring and the cylinder inboard wall, the length in said this flame proof gap equals greater than 12.5mm, and the gap between said inward flange neighboring and the cylinder inboard wall is less than 0.4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200467674U CN202442838U (en) | 2012-02-14 | 2012-02-14 | Mine explosion-proof pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200467674U CN202442838U (en) | 2012-02-14 | 2012-02-14 | Mine explosion-proof pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202442838U true CN202442838U (en) | 2012-09-19 |
Family
ID=46824282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200467674U Expired - Fee Related CN202442838U (en) | 2012-02-14 | 2012-02-14 | Mine explosion-proof pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202442838U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109520667A (en) * | 2018-11-02 | 2019-03-26 | 湖北康利安动力科技有限公司 | A kind of contactless pressure explosion-proof sensor |
| CN112097990A (en) * | 2020-11-23 | 2020-12-18 | 南京沃天科技股份有限公司 | Flame-proof integrated pressure transmitter |
-
2012
- 2012-02-14 CN CN2012200467674U patent/CN202442838U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109520667A (en) * | 2018-11-02 | 2019-03-26 | 湖北康利安动力科技有限公司 | A kind of contactless pressure explosion-proof sensor |
| CN112097990A (en) * | 2020-11-23 | 2020-12-18 | 南京沃天科技股份有限公司 | Flame-proof integrated pressure transmitter |
| CN112097990B (en) * | 2020-11-23 | 2021-02-19 | 南京沃天科技股份有限公司 | Flame-proof integrated pressure transmitter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120919 Termination date: 20150214 |
|
| EXPY | Termination of patent right or utility model |