CN103575456A - Bourdon tube type anti-explosion instrument - Google Patents

Bourdon tube type anti-explosion instrument Download PDF

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Publication number
CN103575456A
CN103575456A CN201210273000.XA CN201210273000A CN103575456A CN 103575456 A CN103575456 A CN 103575456A CN 201210273000 A CN201210273000 A CN 201210273000A CN 103575456 A CN103575456 A CN 103575456A
Authority
CN
China
Prior art keywords
instrument
bourdon tube
explosion
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.)
Pending
Application number
CN201210273000.XA
Other languages
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 CN201210273000.XA priority Critical patent/CN103575456A/en
Publication of CN103575456A publication Critical patent/CN103575456A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a bourdon tube type anti-explosion instrument. The bourdon tube type anti-explosion instrument comprises a bourdon tube, an inner connector, an outer connector, an instrument shell body, a flat washer, a locking nut and a sealing gasket, wherein the bourdon tube and the inner connector are located inside the instrument shell body, the bourdon tube and the inner connector are welded together, the outer connector penetrates through a pass hole in the instrument shell body, is connected with the inner connector inside the instrument shell body and is fixed to the instrument shell body through the flat washer and the locking nut, and thread anti-explosion surfaces are arranged on the combined surface of the outer connector and the inner connector and the combined surface of the outer connector and the instrument outer shell respectively. By means of the continuously through anti-explosion structure with the two thread anti-explosion surfaces, the bourdon tube type anti-explosion instrument is safer and more reliable, does not need to be connected with other equipment, and is more convenient to use.

Description

A kind of bowden tubular type explosion proof instrument
Technical field
The present invention relates to the instrument explosion-proof technology field in explosive atmosphere, particularly a kind of bowden tubular type explosion proof instrument.
Background technology
In chemical industry and petrochemical production process, inflammable gas adopts closed container or pipeline store or carry conventionally.Due to the effect of suffering restraints, gas burst meeting produces higher pressure and rate of pressure rise, to such an extent as to causes casualties and property loss.And in the apparatus system being connected with pipeline at container, due to pressure accumulated effect and subsequent explosion, the consequence of container conduit system gas explosion accident is more serious, usually can cause catastrophic consequence.Obtain gas burst characterisitic parameter, prediction gas burst intensity, 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 invention 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, make to use the explosion-proof type instrument of this structure without associated other equipment, use convenient.
For reaching above-mentioned purpose, the present invention takes following scheme:
A 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;
Coupling is connected with the nipple that is positioned at the inside of instrument housing through the via hole on instrument housing, and is fixed on instrument housing by plain washer and set nut;
On the faying face of coupling and nipple, and on the faying face of coupling and meter case, be provided with threaded flame-proof type face.
Preferably, at the via hole edge of meter case, be provided with embedded sealing gasket, sealing gasket contacts with plain washer, in the junction of nipple and coupling, is provided with embedded sealing gasket, and sealing gasket contacts with coupling.
The present invention has the following advantages and good effect:
1) production, easy to assembly, efficiency is high;
2) modular design, shell is 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.
Accompanying drawing explanation
Fig. 1 is the structural drawing of bowden tubular type explosion proof instrument of the present invention.
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 by any faying face of shell or structure interval, enter enclosure explosive mixture at internal explosion, and can not cause that housing exterior explosive atmosphere blasts.Threaded flame-proof type faying face is mainly to reach explosion-proof object by limiting faying face length, quality of fit and the joggle number of 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.Coupling 3 is connected with the nipple 2 that is positioned at the inside of instrument housing 4 through the via hole on instrument housing 4, and is fixed on 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 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, in nipple 2 and the junction of coupling 3, is provided with embedded sealing gasket 7, 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, make this explosion proof instrument more safe and reliable, and without associated other equipment, use more convenient.
This continuous through explosion separation structure is except can be applicable on explosion proof instrument, can also be used in common occasion, only now the faying face length of double thread, joggle number and be not strict with in conjunction with accuracy requirement, be not strict with the length of another faying face, surfaceness, bonding gap.
Protection scope of the present invention is not limited to the above embodiments, and obviously, those skilled in the art can carry out various changes and distortion and 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 claims in the present invention and equivalent technologies thereof, the intent of the present invention also comprises these changes and is out of shape interior.

Claims (2)

1. a 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;
Coupling is connected with the nipple that is positioned at the inside of instrument housing through the via hole on instrument housing, and is fixed on instrument housing by plain washer and set nut;
On the faying face of coupling and nipple, and on the faying face of coupling and meter case, be provided with threaded flame-proof type face.
2. according to the bowden tubular type explosion proof instrument described in claim 1, it is characterized in that:
Via hole edge at meter case is provided with embedded sealing gasket, and sealing gasket contacts with plain washer, in the junction of nipple and coupling, is provided with embedded sealing gasket, and sealing gasket contacts with coupling.
CN201210273000.XA 2012-08-02 2012-08-02 Bourdon tube type anti-explosion instrument Pending CN103575456A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210273000.XA CN103575456A (en) 2012-08-02 2012-08-02 Bourdon tube type anti-explosion instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210273000.XA CN103575456A (en) 2012-08-02 2012-08-02 Bourdon tube type anti-explosion instrument

Publications (1)

Publication Number Publication Date
CN103575456A true CN103575456A (en) 2014-02-12

Family

ID=50047721

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201210273000.XA Pending CN103575456A (en) 2012-08-02 2012-08-02 Bourdon tube type anti-explosion instrument

Country Status (1)

Country Link
CN (1) CN103575456A (en)

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C06 Publication
PB01 Publication
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20140212