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Positive pressure inflation explosion-proof interlock device for industrial chromatograph

A technology of industrial chromatography and interlocking device, applied in the field of industrial chromatography, can solve the problems of bulky submission, inconvenient use, complex explosion-proof structure, etc., and achieve the effect of high explosion-proof level, suitable for miniaturization and compact structure

Active Publication Date: 2019-02-12
天华化工机械及自动化研究设计院有限公司苏州研究所
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  • Application Information

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Problems solved by technology

[0002] As we all know, the electrical equipment used in the chemical industry must meet the explosion-proof grade and explosion-proof requirements stipulated by the state. The existing industrial chromatograph has a complex explosion-proof structure, huge submission, and many inconveniences in use.

Method used

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  • Positive pressure inflation explosion-proof interlock device for industrial chromatograph

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Embodiment Construction

[0010] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0011] like figure 1 As shown, the positive pressure inflation explosion-proof interlocking device of the industrial chromatograph includes a shell made of steel plate.

[0012] The casing is provided with a three-way air valve V1 with a lock, and a pressure stabilizing valve 1 and a flow meter 2 are arranged upstream of the three-way air valve with a lock. The three-way air valve with a lock V1 includes a first three-way air valve outlet V11 and A second three-way valve outlet V12, a reset valve V2 is provided downstream of the three-way valve V1 with lock, and the reset valve V2 includes a first reset valve inlet V21, a second reset valve inlet...

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Abstract

The invention discloses a positive pressure inflatable explosion-proof interlocking device for an industrial chromatograph, comprising a shell. The shell is internally provided with a locking three-way valve, the upstream of the locking three-way valve is provided with a pressure stabilizing valve and a flow meter, the downstream of the locking three-way valve is provided with a reset valve, the downstream of the reset valve is provided with a door interlock, the downstream of the door interlock is provided with a time delay valve, the downstream of the time delay valve is provided with a state switching valve, and the downstream of the state switching valve is provided with a gas / electricity relay, an electrical control plate and a pressure transmitter. The positive pressure inflatable explosion-proof interlocking device for the industrial chromatograph is installed in the positive pressure inflatable explosion-proof cavity, to monitor and detect the positive pressure state of the electrical control part of the industrial chromatograph, and to continuously blow non-combustible gas to prevent the explosive gas into this area. Only when the electrical control part is fully purged, the power supply is provided to the chromatograph. The automatic completion is achieved, the explosion-proof grade is high, and the positive pressure inflatable explosion-proof interlocking device is especially suitable for the miniaturization of equipment.

Description

technical field [0001] The present invention relates to an industrial chromatograph, more precisely, an industrial chromatograph positive pressure inflation explosion-proof interlock device. Background technique [0002] As we all know, the electrical equipment used in the chemical industry must meet the explosion-proof grade and explosion-proof requirements stipulated by the state. The existing industrial chromatographs have complex explosion-proof structures, huge submissions, and many inconveniences in use. Contents of the invention [0003] The present invention mainly solves the technical problems existing in the prior art, thereby providing an industrial chromatograph positive pressure inflation explosion-proof interlocking device. [0004] Above-mentioned technical problem of the present invention is mainly solved by following technical scheme: [0005] The invention discloses a positive pressure inflation explosion-proof interlocking device for an industrial chrom...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/048G01N35/00
CPCG01N35/00584G05B19/048
Inventor 于军李福中李亚楠陈利军刘昱均
Owner 天华化工机械及自动化研究设计院有限公司苏州研究所
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