CN2899394Y - Positive-pressure explosion-proof box with pressure inspecting function - Google Patents
Positive-pressure explosion-proof box with pressure inspecting function Download PDFInfo
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- CN2899394Y CN2899394Y CN 200620101395 CN200620101395U CN2899394Y CN 2899394 Y CN2899394 Y CN 2899394Y CN 200620101395 CN200620101395 CN 200620101395 CN 200620101395 U CN200620101395 U CN 200620101395U CN 2899394 Y CN2899394 Y CN 2899394Y
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Abstract
The utility model discloses a positive-pressure explosion-proof box with pressure inspecting function, belonging to analysis control field. The utility model comprises a box body, a protecting air-in device and a protecting air-out device, and a pressure-inspecting and explosion-proof control device made of a pressure-inspecting and explosion-proof control module, an explosion-proof cover, a guide-in device and a guide-out device of explosion-proof design for power-supply cables, a pressure inspecting device of explosion-proof design. The pressure-inspecting and explosion-proof control device is arranged adjacent to the wall of the box. The explosion-proof cover is made of an explosion-proof base and an explosion-proof cover; the pressure-inspecting and explosion-proof control module is arranged in the explosion-proof cover. The guide-in device and the guide-out device of explosion-proof design for power-supply cables, the pressure-inspecting device are arranged on the explosion-proof cover. The utility model provides a positive-pressure explosion-proof box of economy, convenient installation and maintenance, and can be used in the device in flammable and explosive environment.
Description
(1) technical field
The utility model relates to the analysis and Control field, relates in particular to the positive-pressure explosion-proof case with pressure detecting and explosion-proof controlled function.
(2) background technology
In fields such as metallurgy, building materials, petrochemical industry, chemical industry, a lot of equipment all will be operated in the inflammable and explosive place, and therefore the equipment that works in the hazardous area must will be accomplished explosion-proof design, and obtains explosion-proof authentication.Explosion-proof design has multiple mode, as positive-pressure explosion-proof, flame proof, intrinsic safe explosion-proof etc.Because positive-pressure explosion-proof has wide accommodation, superiority such as easy to operate, has obtained application more and more widely.
The mode that positive-pressure explosion-proof adopts usually is: in the positive-pressure explosion-proof case that electric equipment is housed in the protective gas feeding hazardous area; make the interior gas pressure of equipment greater than external atmospheric pressure; feed the original gas in enough protective gas displacement casees; make and be full of safe protective gas in each equipment; this moment, electric equipment can be switched on; after this protective gas that feeds certain flow makes in the equipment gas pressure keep certain malleation with respect to external atmosphere pressure, thereby it is explosion-proof that extraneous flammable explosive gas or dust are realized in can not access arrangement.In order to monitor the gas pressure in the positive-pressure explosion-proof equipment, usually mode is: use a flame proof differential pressure transmitter to monitor the air pressure of positive-pressure explosion-proof equipment internal pressure lowest part and the differential pressure of external atmosphere pressure, this differential pressure value is presented on the screen of transmitter, simultaneously differential pressure signal is converted to the 4-20mA current signal and be input in the positive-pressure explosion-proof control device.This positive-pressure explosion-proof control device goes to control the energising and the outage of the electric equipment of needs positive-pressure explosion-proof according to the above-mentioned differential pressure value that records.Concrete control timing and logic can be referring to the explosion-proof explosion-proof criterias of pressurized enclosure type.
Above-mentioned positive-pressure explosion-proof control device can be installed in the place of safety, also can be installed in the hazardous area.The advantage that is installed in the place of safety is not need the positive-pressure explosion-proof control device is carried out explosion-proof design, but shortcoming is that the distance between positive-pressure explosion-proof control device and the flame proof differential pressure transmitter may be far away, needs to lay long cable and corresponding crane span structure or coating steel pipe etc.The shortcoming that is installed in the hazardous area is to carry out explosion-proof design (adopting the flame proof design usually) to the positive-pressure explosion-proof control device, but has avoided the long-distance cable laying.
Prior art can realize positive-pressure explosion-proof preferably to the equipment in the inflammable explosive environments, but also come with some shortcomings, as: (1) inconvenience is installed, debugging and safeguarding: differential pressure transmitter, positive-pressure explosion-proof control device are placed apart, structure is disperseed, integrated level is low, and they are connected complex structure with cable, gas-tpe fitting, cable connector, the sealing device of positive-pressure explosion-proof case by numerous tracheaes, explosion-proof design; (2) cost height: differential pressure transmitter and positive-pressure explosion-proof control device, long-distance line cable and crane span structure, numerous gas-tpe fitting and the cable connector and sealing devices etc. of flame proof design have all improved cost.
(3) summary of the invention
In order to solve deficiencies such as production cost height, inconvenient installation and maintenance in the prior art, the utility model provides the positive-pressure explosion-proof case with pressure detecting and explosion-proof controlled function that a kind of production cost is low, be convenient to installation and maintenance.
The technical solution adopted in the utility model is:
A kind of positive-pressure explosion-proof case with pressure detecting and explosion-proof controlled function comprises casing, protective gas inflow device and bleeder, and protective gas inflow device and bleeder are installed on the casing; Described positive-pressure explosion-proof case comprises that also described pressure detecting and explosion-proof control device are installed near the tank wall place by the feed cable introducing device of pressure detecting and explosion-proof control module, flame proof design and ejector, the pressure-detecting device of flame proof design, pressure detecting and the explosion-proof control device that the flame proof housing is formed; The flame proof housing is made up of the matrix and the lid of flame proof design; Pressure detecting and explosion-proof control module are installed in the flame proof housing; Feed cable introducing device and ejector and pressure-detecting device are installed on the flame proof housing.
As preferably, the pressure-detecting device of described flame proof design is made up of the joint and the differential pressure pickup of flame proof design.
As preferably, described feed cable ejector is the hole by power line and embedding in the joint of flame proof design.
As preferably, display module is installed in the described flame proof housing, described display module is installed in the top of pressure detecting and explosion-proof control module, and the lid of the flame proof design that has transparent window is installed above display module.
As preferably, binding post is installed in the described flame proof housing, binding post connects pressure detecting and explosion-proof control module.
As preferably, the matrix of described flame proof design is and the casing die casting metallic object that cavity is arranged together.
As preferably, the lid of the case lid of described positive-pressure explosion-proof case and pressure detecting and explosion-proof control device is discrete.
Compared with prior art, the beneficial effects of the utility model are: (1) is easy to install, debugs and safeguards: pressure-detecting device and explosion-proof control device are installed in the same flame proof housing, and this pressure detecting and explosion-proof control device near or be adjacent to and be installed on the tank wall place, saved the tracheae that needs explosion-proof design between each device and joint, electric cable and joint, sealing device etc.; (2) cost is low: because the height of pressure transmitter, positive-pressure explosion-proof control device, positive-pressure explosion-proof case is integrated, saved numerous parts and material.
Description of drawings
Fig. 1 is a kind of internal structure schematic diagram of positive-pressure explosion-proof case;
Fig. 2 is a kind of schematic diagram of positive-pressure explosion-proof case;
Fig. 3 is the generalized section of a kind of flame-proof type pressure detecting and explosion-proof control device;
Fig. 4 is equipped with the generalized section that differential pressure pickup reaches the joint of the flame proof design of passing through power line;
Fig. 5 is the internal structure schematic diagram of another kind of positive-pressure explosion-proof case;
Fig. 6 is another kind of flame-proof type pressure detecting and explosion-proof control device schematic diagram;
Fig. 7 is the internal structure schematic diagram of the third positive-pressure explosion-proof case.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail.
Embodiment 1:
A kind of positive-pressure explosion-proof case with pressure detecting and explosion-proof controlled function shown in Fig. 1-4 comprises pressure detecting and explosion-proof control device, protective gas inflow device 51 and bleeder 52 that casing 1, flame proof design.Pressure detecting and explosion-proof control device are adjacent to and are installed on cabinet wall, need explosion-proof electric equipment 2 to be installed in the opposite side of casing 1, and protective gas flows into and bleeder is installed on the casing 1.
The matrix 33 that the pressure detecting of flame proof design and explosion-proof control device are designed by pressure detecting and explosion-proof control module 31, binding post 32, the joint 39 of flame proof design, the pressure-detecting device of flame proof design, display module 34, flame proof, the lid that has transparent window 37 of flame proof design are formed.The pressure-detecting device of flame proof is made up of joint 35, differential pressure pickup 36, the flame-retardant device 42 of flame proof design, and flame proof matrix 33 is and the casing 1 die casting metallic object that cavity is arranged together.Pressure detecting and explosion-proof control module 31, display module 34, binding post 32 are installed in the cavity of metallic matrix 33.The display module of being made up of display driver circuit and display screen 34 is installed in the top of pressure detecting and explosion-proof control module 31 and is electrically connected, and the lid 37 that has transparent window is installed on the flame proof matrix 33 by screw thread.
The feed cable introducing device is that joint 39 is installed on the matrix 33, and matrix 33 internal cavities communicate with ambient atmosphere with the thread gaps of matrix 33 by joint 39; A pair of 24V power line passes wherein to be received on the binding post 32, and one the tunnel connects pressure detecting and explosion-proof control device then; Binding post 32 is received after by the relay in pressure detecting and the explosion-proof control module 31 in another road, is connected to electric equipment 2 by joint 35 leads 41 again.Power supply lead wire 41 passes the perforate 40 at joint 35 edges, carries out embedding after lead-in wire 41 passes this hole.
Have the hole on the cover plate 3 of casing 1, the lid 37 of pressure detecting and explosion-proof control device is exposed, be convenient to the maintenance of pressure detecting and explosion-proof control device; Cover plate 3 keeps sealing with casing 1, pressure detecting and explosion-proof control device respectively by two O type circles simultaneously.
Embodiment 2:
A kind of positive-pressure explosion-proof case with pressure detecting and explosion-proof controlled function shown in Fig. 1,2,3,4, as different from Example 1: described flame proof matrix 33 is metal derbies that there is cavity inside, is installed in the inside of casing 1, nestles up tank wall.The feed cable introducing device 39 of explosion-proof design is installed on the flame proof matrix 33 by screw thread, simultaneously the O type circle 50 of 1 of flame proof matrix 33 and casing is compressed, and makes that maintenance seals between flame proof matrix 33 and tank wall.
All the other structures are identical with embodiment 1 with the course of work.
Embodiment 3:
A kind of integrated pressure detecting shown in Fig. 5,6 and the positive-pressure explosion-proof case of explosion-proof control device, as different from Example 1: pressure detecting and explosion-proof control device are installed in outside the casing 1 and near tank wall, have two cavitys in the matrix 33, pressure detecting and explosion-proof control module 31, display module 34 are installed in the cavity, joint 35 connect boxes 1 and flame proof matrix 33; Binding post 32 is installed in another cavity; The feed cable ejector is joint 45 connect boxes 1 and flame proof matrix 33, and is inner by power line and embedding; Joint 35 and joint 45 all pass through O type circle and casing 1 sealing.
The cover plate of casing 1 keeps sealing by O type circle and casing 1.
All the other structures are identical with embodiment 1 with the course of work.
Embodiment 4:
A kind of positive-pressure explosion-proof case shown in Fig. 4,7 with pressure detecting and explosion-proof controlled function, as different from Example 1, the pressure detecting of flame proof design and explosion-proof control device are installed in outside the casing 1 and near tank wall, and the joint 35 of flame proof design keeps sealing by O type circle and tank wall.
All the other structures are identical with embodiment 1 with the course of work.
Claims (8)
1, a kind of positive-pressure explosion-proof case with pressure detecting and explosion-proof controlled function comprises casing, protective gas inflow device and bleeder, and protective gas inflow device and bleeder are installed on the casing; It is characterized in that: described positive-pressure explosion-proof case also comprises feed cable introducing device and ejector, the pressure-detecting device of flame proof design and pressure detecting and the explosion-proof control device that the flame proof housing is formed that is designed by pressure detecting and explosion-proof control module, flame proof, and described pressure detecting and explosion-proof control device are installed near the tank wall place; The flame proof housing is made up of the matrix and the lid of flame proof design; Pressure detecting and explosion-proof control module are installed in the flame proof housing; Feed cable introducing device and ejector and pressure-detecting device are installed on the flame proof housing, and pressure-detecting device connects pressure detecting and explosion-proof control module.
2, the positive-pressure explosion-proof case with pressure detecting and explosion-proof controlled function according to claim 1, it is characterized in that: the pressure-detecting device of described flame proof design is made up of joint (35) and the differential pressure pickup (36) of flame proof design, and differential pressure pickup (36) is installed in the hole of joint (35) inside that flame proof designs and connects pressure detecting and explosion-proof control module (31).
3, the positive-pressure explosion-proof case with pressure detecting and explosion-proof controlled function according to claim 2 is characterized in that: described feed cable ejector is the interior hole (40) by power line (41) and embedding of the joint (35) of flame proof design.
4, according to claim 1 or 2 or 3 described positive-pressure explosion-proof casees with pressure detecting and explosion-proof controlled function, it is characterized in that: display module (34) is installed in the described flame proof housing, described display module (34) is installed in the top of pressure detecting and explosion-proof control module (31), and the lid (37) that has the flame proof design of transparent window is installed in the top of display module (34).
5, the positive-pressure explosion-proof case with pressure detecting and explosion-proof controlled function according to claim 4 is characterized in that: binding post (32) is installed in the described flame proof housing, and binding post (32) is connected with explosion-proof control module (31) with pressure detecting.
6, according to claim 1 or 2 or 3 described positive-pressure explosion-proof casees with pressure detecting and explosion-proof controlled function, it is characterized in that: binding post (32) is installed in the described flame proof housing, and binding post (32) is connected with explosion-proof control module (31) with pressure detecting.
7, the positive-pressure explosion-proof case with pressure detecting and explosion-proof controlled function according to claim 1 is characterized in that: the matrix (33) of described flame proof design is and casing (1) the die casting metal derby that cavity is arranged together.
8, the positive-pressure explosion-proof case with pressure detecting and explosion-proof controlled function according to claim 1 is characterized in that: the case lid on the described casing (1) and the lid of pressure detecting and explosion-proof control device are discrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620101395 CN2899394Y (en) | 2006-03-03 | 2006-03-03 | Positive-pressure explosion-proof box with pressure inspecting function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620101395 CN2899394Y (en) | 2006-03-03 | 2006-03-03 | Positive-pressure explosion-proof box with pressure inspecting function |
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| Publication Number | Publication Date |
|---|---|
| CN2899394Y true CN2899394Y (en) | 2007-05-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620101395 Expired - Fee Related CN2899394Y (en) | 2006-03-03 | 2006-03-03 | Positive-pressure explosion-proof box with pressure inspecting function |
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| CN (1) | CN2899394Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101778546A (en) * | 2010-02-11 | 2010-07-14 | 赵幼敏 | Explosion-proof tank for electric appliance |
| CN102928020A (en) * | 2012-11-05 | 2013-02-13 | 昆山华恒焊接股份有限公司 | Device for detecting differential pressure and flow velocity |
| CN103917068A (en) * | 2014-04-02 | 2014-07-09 | 安徽埃菲科电气设备制造有限公司 | Anti-explosion electric control cabinet convenient to cool |
| CN104595700A (en) * | 2015-01-29 | 2015-05-06 | 张家港富耐特新能源智能系统有限公司 | Explosion-proof method of LNG (liquefied natural gas) filling machine |
| CN106994285A (en) * | 2015-11-26 | 2017-08-01 | 日本派欧尼株式会社 | electrical installation unit |
| CN108389604A (en) * | 2018-03-29 | 2018-08-10 | 眉山麦克在线设备股份有限公司 | Positive pressure purges explosion-proof control system |
| WO2018171064A1 (en) * | 2017-03-21 | 2018-09-27 | 华为技术有限公司 | Sealing apparatus |
| CN108705983A (en) * | 2018-05-08 | 2018-10-26 | 苏州博众机器人有限公司 | A kind of explosion isolation device and AGV |
| CN108770270A (en) * | 2018-08-02 | 2018-11-06 | 上海隽玺电子科技有限公司 | A kind of intelligent controller for explosion hazard area positive pressure type equipment |
| CN110439686A (en) * | 2019-08-09 | 2019-11-12 | 湖北康晨安宝矿业设备有限责任公司 | A kind of electric-spraying explosion-proof diesel machine control system |
-
2006
- 2006-03-03 CN CN 200620101395 patent/CN2899394Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101778546A (en) * | 2010-02-11 | 2010-07-14 | 赵幼敏 | Explosion-proof tank for electric appliance |
| CN102928020A (en) * | 2012-11-05 | 2013-02-13 | 昆山华恒焊接股份有限公司 | Device for detecting differential pressure and flow velocity |
| CN102928020B (en) * | 2012-11-05 | 2015-05-20 | 昆山华恒焊接股份有限公司 | Device for detecting differential pressure and flow velocity |
| CN103917068A (en) * | 2014-04-02 | 2014-07-09 | 安徽埃菲科电气设备制造有限公司 | Anti-explosion electric control cabinet convenient to cool |
| CN104595700A (en) * | 2015-01-29 | 2015-05-06 | 张家港富耐特新能源智能系统有限公司 | Explosion-proof method of LNG (liquefied natural gas) filling machine |
| CN106994285A (en) * | 2015-11-26 | 2017-08-01 | 日本派欧尼株式会社 | electrical installation unit |
| WO2018171064A1 (en) * | 2017-03-21 | 2018-09-27 | 华为技术有限公司 | Sealing apparatus |
| CN110115118A (en) * | 2017-03-21 | 2019-08-09 | 华为技术有限公司 | Sealing device |
| CN108389604A (en) * | 2018-03-29 | 2018-08-10 | 眉山麦克在线设备股份有限公司 | Positive pressure purges explosion-proof control system |
| CN108705983A (en) * | 2018-05-08 | 2018-10-26 | 苏州博众机器人有限公司 | A kind of explosion isolation device and AGV |
| CN108770270A (en) * | 2018-08-02 | 2018-11-06 | 上海隽玺电子科技有限公司 | A kind of intelligent controller for explosion hazard area positive pressure type equipment |
| CN110439686A (en) * | 2019-08-09 | 2019-11-12 | 湖北康晨安宝矿业设备有限责任公司 | A kind of electric-spraying explosion-proof diesel machine control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: FOCUSED PHOTONICS (HANGZHOU), LTD. Free format text: FORMER NAME: JUGUANG SCIENCE AND TECHNOLOGY (HANGZHOU) CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: Hangzhou City, Zhejiang province Binjiang District 310052 shore road 760 Patentee after: Focused Photonics (Hangzhou) Inc. Address before: Hangzhou City, Zhejiang province Binjiang District 310052 shore road 1180 No. 3 Patentee before: Juguang Sci. & Tech. (Hangzhou) Co., Ltd. |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070509 Termination date: 20130303 |