CN212568653U - Explosion-proof electronic flow control module - Google Patents
Explosion-proof electronic flow control module Download PDFInfo
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- CN212568653U CN212568653U CN202021302742.7U CN202021302742U CN212568653U CN 212568653 U CN212568653 U CN 212568653U CN 202021302742 U CN202021302742 U CN 202021302742U CN 212568653 U CN212568653 U CN 212568653U
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Abstract
The utility model discloses an explosion-proof electronic flow control module, including explosion-proof EPC box and explosion-proof EPC upper cover, explosion-proof EPC upper cover side surface is connected with explosion-proof EPC box, explosion-proof EPC upper cover one side surface mounting has the gas circuit apron, gas circuit apron one skin weld has nonrust steel pipe, gas circuit apron another surface is provided with the air resistance, air resistance and explosion-proof EPC upper cover laser welding, explosion-proof EPC upper cover side all is connected with a plurality of stainless steel cylinder cap screws, explosion-proof EPC box one side surface threaded connection has explosion-proof cable joint, the inside explosion-proof chamber that is provided with of explosion-proof EPC box, explosion-proof intracavity portion is provided with EPC circuit board and proportional valve respectively, EPC circuit board one surface is connected with the cable. The gas circuit structure part of the module and the explosion-proof box body are well combined into a whole by the structure of the explosion-proof electronic flow control module, the related circuit part is completely installed in the explosion-proof cavity, the size is greatly reduced, meanwhile, the gas circuit connection structure is convenient, and the installation and use convenience is improved.
Description
Technical Field
The utility model relates to a gas chromatograph technical field specifically is an explosion-proof electron flow control module.
Background
The gas chromatograph is an instrument for qualitatively and quantitatively analyzing a multi-component complex mixture by utilizing a chromatographic separation technology and a detection technology, most of current flow control modules used for industrial chromatography applied to the petrochemical chemical industry are common non-explosion-proof types and are placed in a positive pressure explosion-proof cavity, but the gas circuit is troublesome to install in and out, so that the positive pressure cavity has more leakage possibility, the whole EPC module is assembled in the existing explosion-proof box when some products are used, the products have larger volume, occupy larger space and cause troubles in-site installation and use;
the electronic flow control module (EPC for short) used by the existing gas chromatograph in the market at present is mostly used in a laboratory and under an online working condition, the structure of the EPC is open, the inflammable and explosive gas hydrogen which is possibly used is not subjected to explosion-proof treatment, a circuit board used by the module is also subjected to common treatment, and along with the large-scale use of industrial chromatography in dangerous environment industries such as petrochemical industry and the like, the problem of the explosion-proof use safety of the electronic flow control module is urgently needed to be solved. To this end, we propose an explosion-proof electronic flow control module.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an explosion-proof electron flow control module to solve the electron flow control module that current gas chromatograph used on the existing market that proposes in the above-mentioned background art and mostly use under laboratory and the online operating mode, its structure is the open-type, does not do the explosion-proof measure, and the circuit board that the module used is ordinary processing equally, the not enough scheduling problem of security of electron flow control module.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an explosion-proof electronic flow control module, includes explosion-proof EPC box and explosion-proof EPC upper cover, explosion-proof EPC upper cover side surface is connected with explosion-proof EPC box, explosion-proof EPC upper cover one side surface mounting has the gas circuit apron, a gas circuit apron skin weld has nonrust steel pipe, gas circuit apron another surface is provided with the air resistance, the air resistance is with explosion-proof EPC upper cover laser welding, explosion-proof EPC upper cover week side is connected with a plurality of stainless steel cylinder head screws, explosion-proof EPC box one side surface threaded connection has explosion-proof cable joint, the inside explosion-proof chamber that is provided with of explosion-proof EPC box, the inside EPC circuit board and the proportional valve of being provided with respectively of explosion-proof chamber, a EPC circuit board surface connection has the cable, the cable is drawn forth through explosion-proof cable joint, explosion-proof.
Preferably, the inner surface of the upper cover of the explosion-proof EPC is provided with a fluororubber O-shaped ring, and the gas path cover plate is sealed with the upper cover of the explosion-proof EPC through the fluororubber O-shaped ring.
Preferably, the stainless steel cylindrical head screw is assembled and connected with the upper cover of the explosion-proof EPC.
Preferably, the air inlet fire retardant sheet is laser welded on the surface of the upper cover of the explosion-proof EPC.
Preferably, the stainless steel pipe is communicated with the outside of the upper cover of the explosion-proof EPC.
Compared with the prior art, the beneficial effects of the utility model are that: the electronic flow control module is structurally improved, a gas path leading-in and leading-out part and an explosion-proof box upper cover are designed into a whole, an explosion-proof joint is led out from a circuit cable in the explosion-proof box, and a gas resistance and fire resistance sheet are assembled with the upper cover through laser welding, so that the module integrally has an explosion-proof function and meets the explosion-proof requirement;
the utility model discloses explosion-proof electron flow control module's structure is fine with the gas circuit structural component of module and flame proof box combines as an organic wholely, and the circuit part that involves installs completely in the flame proof intracavity, and the volume reduces greatly, and gas circuit connection structure is convenient simultaneously, installs and uses convenient degree to improve.
Drawings
Fig. 1 is a front view of an explosion-proof electronic flow control module according to the present invention.
In the figure: 1. a gas path cover plate; 2. air resistance; 3. an explosion-proof EPC upper cover; 4. an explosion-proof EPC box body; 5. an explosion-proof cable joint; 6. an EPC circuit board; 7. a proportional valve; 8. air intake fire retardant sheet.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution: an explosion-proof electronic flow control module comprises an explosion-proof EPC box body 4 and an explosion-proof EPC upper cover 3, wherein the surface of one side of the explosion-proof EPC upper cover 3 is connected with the explosion-proof EPC box body 4, the surface of one side of the explosion-proof EPC upper cover 3 is provided with a gas circuit cover plate 1, one surface of the gas circuit cover plate 1 is welded with a stainless steel pipe, the other surface of the gas circuit cover plate 1 is provided with a gas resistor 2, and the gas resistor 2 is welded with the explosion-;
the periphery of the explosion-proof EPC upper cover 3 is connected with a plurality of stainless steel cylindrical head screws, the surface of one side of the explosion-proof EPC box body 4 is in threaded connection with an explosion-proof cable joint 5, an explosion-proof cavity is arranged inside the explosion-proof EPC box body 4, an EPC circuit board 6 and a proportional valve 7 are respectively arranged inside the explosion-proof cavity, one surface of the EPC circuit board 6 is connected with a cable, the cable is led out through the explosion-proof cable joint 5, an air inlet fire retardant sheet 8 is arranged on the surface of the explosion-proof EPC upper cover 3, the integral service strength of the module is improved through the air inlet fire retardant;
3 internal surfaces of explosion-proof EPC upper cover are provided with fluororubber O type circle, and gas circuit apron 1 is sealed with explosion-proof EPC upper cover 3 through fluororubber O type circle, and sealed protection security is stronger, and stainless steel cylinder cap screw and 3 assembly connections of explosion-proof EPC upper cover, connection stability is high, and the operation is convenient, admits air back-fire relief piece 8 in 3 surperficial laser welding of explosion-proof EPC upper cover, and fixed effectual, stainless steel pipe in 3 outside intercommunications of explosion-proof EPC upper cover promote the use adaptability.
The working principle is as follows: according to the scheme, the structure of the explosion-proof electronic flow control module is improved, the gas path part of the module and the upper cover of the explosion-proof cavity are designed into a whole, meanwhile, the gas inlet and outlet (including flammable and explosive gas, hydrogen and the like) are installed in a pipeline by using fire retardant pieces, the periphery of the gas inlet and outlet is fixed by using screws, and the circuit part of the module is installed in the explosion-proof cavity, so that the whole module has an explosion-proof function;
meanwhile, the improved electronic flow control module integrates the gas circuit and the explosion-proof box upper cover, the circuit part is arranged in the explosion-proof box, the periphery of the circuit part is fixed by using screws, and the leading-out of the signal cable uses an explosion-proof joint meeting the explosion-proof requirement, so that the whole module meets the explosion-proof requirement.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. An explosion-proof electronic flow control module, includes explosion-proof EPC box (4) and explosion-proof EPC upper cover (3), explosion-proof EPC upper cover (3) one side surface is connected with explosion-proof EPC box (4), its characterized in that: explosion-proof EPC upper cover (3) one side surface mounting has gas circuit apron (1), gas circuit apron (1) skin weld has nonrust steel pipe, gas circuit apron (1) another surface is provided with air-resistor (2), air-resistor (2) and explosion-proof EPC upper cover (3) laser welding, explosion-proof EPC upper cover (3) week side is connected with a plurality of stainless steel cylinder cap screws, explosion-proof EPC box (4) one side surface threaded connection has explosion-proof cable joint (5), explosion-proof EPC box (4) inside is provided with explosion-proof chamber, explosion-proof intracavity portion is provided with EPC circuit board (6) and proportional valve (7) respectively, EPC circuit board (6) one surface connection has the cable, the cable is drawn forth through explosion-proof cable joint (5), explosion-proof EPC upper cover (3) surface is provided with back-fire relief piece (8) of admitting air.
2. An explosion proof electronic flow control module according to claim 1, wherein: the inner surface of the explosion-proof EPC upper cover (3) is provided with a fluororubber O-shaped ring, and the gas circuit cover plate (1) is sealed with the explosion-proof EPC upper cover (3) through the fluororubber O-shaped ring.
3. An explosion proof electronic flow control module according to claim 1, wherein: the stainless steel cylindrical head screw is assembled and connected with the explosion-proof EPC upper cover (3).
4. An explosion proof electronic flow control module according to claim 1, wherein: and the air inlet fire retardant sheet (8) is welded on the surface of the explosion-proof EPC upper cover (3) by laser.
5. An explosion proof electronic flow control module according to claim 1, wherein: the stainless steel pipe is communicated with the outside of the explosion-proof EPC upper cover (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021302742.7U CN212568653U (en) | 2020-07-06 | 2020-07-06 | Explosion-proof electronic flow control module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021302742.7U CN212568653U (en) | 2020-07-06 | 2020-07-06 | Explosion-proof electronic flow control module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212568653U true CN212568653U (en) | 2021-02-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021302742.7U Active CN212568653U (en) | 2020-07-06 | 2020-07-06 | Explosion-proof electronic flow control module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212568653U (en) |
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2020
- 2020-07-06 CN CN202021302742.7U patent/CN212568653U/en active Active
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