CN202710238U - Bourdon-tube-type explosion-proof instrument - Google Patents

Bourdon-tube-type explosion-proof instrument Download PDF

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Publication number
CN202710238U
CN202710238U CN 201220380622 CN201220380622U CN202710238U CN 202710238 U CN202710238 U CN 202710238U CN 201220380622 CN201220380622 CN 201220380622 CN 201220380622 U CN201220380622 U CN 201220380622U CN 202710238 U CN202710238 U CN 202710238U
Authority
CN
China
Prior art keywords
instrument
proof
instrument housing
coupling
nipple
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN 201220380622
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Chinese (zh)
Inventor
熊章华
张兆峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
YICHANG ZHAOFENG AUTOMATION INSTRUMENT CO Ltd
Original Assignee
YICHANG ZHAOFENG AUTOMATION INSTRUMENT CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by YICHANG ZHAOFENG AUTOMATION INSTRUMENT CO Ltd filed Critical YICHANG ZHAOFENG AUTOMATION INSTRUMENT CO Ltd
Priority to CN 201220380622 priority Critical patent/CN202710238U/en
Application granted granted Critical
Publication of CN202710238U publication Critical patent/CN202710238U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model provides a bourdon-tube-type explosion-proof instrument. The explosion-proof instrument comprises a bourdon tube, an inner connector, an outer connector, an instrument housing, a flat washer, a locking screw nut and a sealing gasket, wherein the bourdon tube and the inner connector are arranged inside the instrument housing and are welded together; the outer connecter passes through a through hole on the instrument housing so as to be connected with the inner connecter inside the instrument housing and is fixed on the instrument housing by the flat washer and the locking screw nut; and threaded flame-proof surfaces are arranged at the joint face of the outer connector and the inner connector and the joint face of the outer connector and the instrument housing. With the continuous through-type flame-proof structure of the double threaded flame-proof surfaces, the explosion-proof instrument is safe and reliable and needs not to be associated with other equipment, thereby being convenient to use.

Description

A kind of bowden tubular type explosion proof instrument
Technical field
The utility model relates to the instrument explosion-proof technology field in the explosive atmosphere, particularly a kind of bowden tubular type explosion proof instrument.
Background technology
In chemical industry and the petrochemical production process, inflammable gas usually adopts closed container or pipeline to store or carries.Because the effect of suffering restraints, the gas burst meeting produces higher pressure and rate of pressure rise, to such an extent as to cause casualties and property loss.And in container and apparatus system that pipeline is connected, because pressure accumulated effect and subsequent explosion, the consequence of container conduit system gas explosion accident is more serious, usually can cause catastrophic consequence.Obtain the gas burst characterisitic parameter, prediction gas burst intensity is for datonation-inhibition, the flame proof of container conduit system with put out quick-fried safe design and have great importance.Therefore provide a kind of precision high, the explosion proof instrument that security is good has become the technical matters of being badly in need of solution.
Summary of the invention
In view of the foregoing defects the prior art has, the utility model provides a kind of bowden tubular type explosion proof instrument, this explosion proof instrument adopts Bourdon tube as sensing element, can be used for the non-corrosive medium of sensing element, by adopting continuous through pair of screw thread blast resistance construction and modular design, so that use the explosion-proof type instrument of this structure to need not related other equipment, use convenient.
For reaching above-mentioned purpose, the utility model is taked following scheme:
A kind of bowden tubular type explosion proof instrument, this explosion proof instrument comprises Bourdon tube, nipple, coupling, instrument housing, plain washer, set nut and sealing gasket, it is characterized in that:
Bourdon tube and nipple are positioned at the inside of instrument housing, and Bourdon tube and nipple weld together;
The via hole that coupling is passed on the instrument housing is connected with the nipple of the inside that is positioned at instrument housing, and is fixed on the instrument housing by plain washer and set nut;
On the faying face of coupling and nipple, and be provided with the threaded flame-proof type face on the faying face of coupling and meter case.
Preferably, be provided with embedded sealing gasket at the via hole edge of meter case, sealing gasket contacts with plain washer, is provided with embedded sealing gasket in the junction of nipple and coupling, and sealing gasket contacts with coupling.
The utlity model has following advantage and good effect:
1) production, easy to assembly, efficient is high;
2) modular design, shell be connected with joint, easy to adjust;
3) simple in structure, letter is gathered, and volume is small and exquisite, install and use and easy to maintenance, and coupling size minimum can be φ 10 * 80mm.
Description of drawings
Fig. 1 is the structural drawing of bowden tubular type explosion proof instrument of the present utility model.
Embodiment
Below in conjunction with accompanying drawing embodiments of the present invention are described further.
The structural drawing of this bowden tubular type explosion proof instrument as shown in Figure 1.Flame-proof type is a kind of type of protection [of an electrical apparatus for explosive atmospheres that is applicable to explosive atmosphere, its structure can bear enter enclosure by any faying face of shell or structure interval explosive mixture at internal explosion, and can not cause that the housing exterior explosive atmosphere blasts.The threaded flame-proof type faying face mainly is to reach explosion-proof purpose by faying face length, quality of fit and the joggle number that limits screw thread.This explosion proof instrument comprises Bourdon tube 1, nipple 2, coupling 3, instrument housing 4, plain washer 5, set nut 6 and sealing gasket 7.
Wherein, Bourdon tube 1 and nipple 2 are positioned at the inside of instrument housing 4, and Bourdon tube 1 welds together with nipple 2.The via hole that coupling 3 is passed on the instrument housing 4 is connected with the nipple 2 of the inside that is positioned at instrument housing 4, and is fixed on the instrument housing 4 by plain washer 5 and set nut 6.On the faying face of coupling 3 and nipple 2, and be provided with the threaded flame-proof type face on the faying face of coupling 3 and meter case 4.Via hole edge at meter case 4 is provided with embedded sealing gasket 7, and sealing gasket 7 contacts with plain washer 5, is provided with embedded sealing gasket 7 in the junction of nipple 2 and coupling 3, and sealing gasket 7 contacts with coupling 3.
By adopting the continuous through explosion separation structure of above-mentioned pair of threaded flame-proof type face, so that this explosion proof instrument is more safe and reliable, and need not related other equipment, use more convenient.
This continuous through explosion separation structure is except can be applicable on the explosion proof instrument, can also be used in common occasion, only this moment double thread faying face length, joggle number and do not do strict demand in conjunction with accuracy requirement, length, surfaceness, the bonding gap of another faying face are not done strict demand.
Protection domain of the present utility model is not limited to the above embodiments, and obviously, those skilled in the art can carry out various changes and distortion and do not depart from the scope of the present invention and spirit the present invention.If these changes and distortion belong in the scope of the utility model claim and equivalent technologies thereof, then intention of the present utility model also comprises these changes and is out of shape interior.

Claims (2)

1. bowden tubular type explosion proof instrument, this explosion proof instrument comprises Bourdon tube, nipple, coupling, instrument housing, plain washer, set nut and sealing gasket, it is characterized in that:
Bourdon tube and nipple are positioned at the inside of instrument housing, and Bourdon tube and nipple weld together;
The via hole that coupling is passed on the instrument housing is connected with the nipple of the inside that is positioned at instrument housing, and is fixed on the instrument housing by plain washer and set nut;
On the faying face of coupling and nipple, and be provided with the threaded flame-proof type face on the faying face of coupling and meter case.
2. the bowden tubular type explosion proof instrument described in according to claim 1, it is characterized in that: the via hole edge at meter case is provided with embedded sealing gasket, sealing gasket contacts with plain washer, be provided with embedded sealing gasket in the junction of nipple and coupling, sealing gasket contacts with coupling.
CN 201220380622 2012-08-02 2012-08-02 Bourdon-tube-type explosion-proof instrument Expired - Lifetime CN202710238U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220380622 CN202710238U (en) 2012-08-02 2012-08-02 Bourdon-tube-type explosion-proof instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220380622 CN202710238U (en) 2012-08-02 2012-08-02 Bourdon-tube-type explosion-proof instrument

Publications (1)

Publication Number Publication Date
CN202710238U true CN202710238U (en) 2013-01-30

Family

ID=47590529

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220380622 Expired - Lifetime CN202710238U (en) 2012-08-02 2012-08-02 Bourdon-tube-type explosion-proof instrument

Country Status (1)

Country Link
CN (1) CN202710238U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107884117A (en) * 2017-10-11 2018-04-06 马鞍山合力仪表有限责任公司 A kind of manometer leak-proof device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107884117A (en) * 2017-10-11 2018-04-06 马鞍山合力仪表有限责任公司 A kind of manometer leak-proof device

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GR01 Patent grant
CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20130130