CN105375353A - Positive pressure explosion-proof electrical control combination cabinet - Google Patents
Positive pressure explosion-proof electrical control combination cabinet Download PDFInfo
- Publication number
- CN105375353A CN105375353A CN201510796533.XA CN201510796533A CN105375353A CN 105375353 A CN105375353 A CN 105375353A CN 201510796533 A CN201510796533 A CN 201510796533A CN 105375353 A CN105375353 A CN 105375353A
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- China
- Prior art keywords
- explosion
- valve
- electrical control
- proof
- cabinet unit
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- 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.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
- H02B1/308—Mounting of cabinets together
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/20—Control of fluid pressure characterised by the use of electric means
- G05D16/2006—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means
- G05D16/2013—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means
- G05D16/2026—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means with a plurality of throttling means
- G05D16/2033—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means with a plurality of throttling means the plurality of throttling means being arranged in series
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Power Engineering (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The invention provides a positive pressure explosion-proof electrical control combination cabinet, which comprises a plurality of cabinet body units, a pressure sensor groups, flow control devices, an air supply device and an explosion-proof controller, wherein the plurality of cabinet body units are sequentially spliced into a whole; each cabinet boy unit is provided with each pressure sensor group and each flow control device; the air supply device is communicated with the plurality of cabinet body units; and the explosion-proof controller is electrically connected with the pressure sensor groups, the flow control devices and the air supply device respectively. The positive pressure explosion-proof electrical control combination cabinet provided by the invention can meet the occasion with a plurality of cabinet bodies; and the problem that a positive pressure value in the explosion-proof cabinet is affected by air source fluctuation can be effectively solved.
Description
Technical field
The present invention relates to explosion proof control case apparatus field, concrete, relate to a kind of positive voltage type anti-explosion electrical control combination sideboard.
Background technology
Along with development and the production-scale expanding day of China's industry, positive voltage type anti-explosion rack is used to the place with explosion risk gas or steam more and more widely, as the scene of the dangerous industries such as oil, chemical industry, metallurgy, oil field, coal and plastic spraying.Because the existence of malleation in rack can overcome the harmful effect of severe environmental conditions to device and instrument etc. in cabinet well, thus make whole system have explosion-proof, dust-proof, moistureproof and corrosion-resistant performance, drastically increase the environmental suitability of rack.
At present, explosion-proof cabinet use general be all the cabinet of INCREASEDSAFETY and Flameproof shell, whole cabinet shell is thicker, very heavy, cost compare is high, for the occasion needing multiple cabinet, communication and to walk holding wire cumbersome between cabinet, need to be equipped with a large amount of Glan and plug connector, workload is very large, debugging and maintenance inconvenience.In addition, the anti-explosion cabinet on market sets minimum bleed pressure by pressure switch and time of exchanging gas calculates ventilation volume mostly: when bleed pressure is less than switch setting pressure, switch cannot be opened, and namely cannot take a breath; When bleed pressure equals pressure switch setting pressure, ventilation volume equals the ventilation volume set; When bleed pressure is greater than pressure switch setting pressure, actual ventilation volume is greater than the ventilation volume of setting, waste gas.Malleation value in these anti-explosion cabinets is also comparatively large by the impact of source of the gas fluctuation, such as when bleed pressure is on the low side or decompression time, without pressure reduction between malleation value and atmospheric pressure, in the hole in anti-explosion cabinet, and explosion-proof object cannot be reached.
Therefore, be necessary to develop further existing positive-pressure explosion-proof rack, to avoid above-mentioned defect.
Summary of the invention
In order to solve the technical problem that above-mentioned existing positive-pressure explosion-proof rack exists, the invention provides a kind of positive voltage type anti-explosion electrical control combination sideboard, not only to satisfy the demand the occasion of multiple cabinet, and effectively can solve the problem of the malleation value in anti-explosion cabinet by source of the gas influence of fluctuations.
The invention provides a kind of positive voltage type anti-explosion electrical control combination sideboard, comprise multiple cabinet unit, pressure sensor group, volume control device, feeder and explosion-proof controller, described multiple cabinet unit is spliced into one successively and cabinet unit described in each is equipped with described pressure sensor group and described volume control device, described feeder is connected with described multiple cabinet unit, and described explosion-proof controller is electrically connected with described pressure sensor group, described volume control device and described feeder respectively.
In a preferred embodiment of described positive voltage type anti-explosion electrical control combination sideboard provided by the invention, described feeder comprises compressed air source unit, control valve, supply air line, allocation component and injection apparatus, described control valve is communicated with described compressed air source unit, described supply air line two ends are connected with described allocation component with described control valve respectively, described allocation component is communicated with one by one with multiple described injection apparatus, and the two is located in described multiple cabinet unit respectively.
In a preferred embodiment of described positive voltage type anti-explosion electrical control combination sideboard provided by the invention, described control valve comprises switch valve, pressure-reducing valve and choke valve, described switch valve, described pressure-reducing valve and described choke valve are communicated with successively, described switch valve closes on described compressed air source unit and is communicated with it, and described choke valve closes on described injection apparatus and is communicated with it.
In described positive voltage type anti-explosion electrical control combination sideboard one provided by the invention preferred embodiment, described volume control device comprises sleeve pipe, throttle shaft and micromachine, described throttle shaft is located in described sleeve pipe, and adopting engagement thread to be connected with described sleeve pipe, described throttle shaft is connected with described micromachine.
In described positive voltage type anti-explosion electrical control combination sideboard one provided by the invention preferred embodiment, described micromachine is fixedly arranged on described cabinet unit outer wall.
In described positive voltage type anti-explosion electrical control combination sideboard one provided by the invention preferred embodiment, described cabinet unit comprises plemum and is positioned at the explosion-proof cell bottom described plemum, described explosion-proof cell comprises manual exhaust valve and automatic exhaust steam valve, and described manual exhaust valve and described automatic exhaust steam valve are located at described explosion-proof cell inwall and are communicated with described plemum respectively.
Compared to prior art, described positive voltage type anti-explosion electrical control combination sideboard provided by the invention has following beneficial effect:
One, multiple described cabinet unit of the present invention is spliced into one, and the occasion of multiple cabinet of satisfying the demand, solves the problem of communication and cabling complexity between described cabinet unit.
Two, the present invention regulates the uninterrupted of described choke valve by described micromachine, thus accurately controls ventilation volume, and guarantees that the malleation value of described cabinet unit inside is in stable state.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings, wherein:
Fig. 1 is the structural representation of positive voltage type anti-explosion electrical control combination sideboard one provided by the invention preferred embodiment;
Fig. 2 is the structural representation of multiple cabinet units of the positive voltage type anti-explosion electrical control combination sideboard shown in Fig. 1.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
Please refer to the structural representation that Fig. 1 and Fig. 2, Fig. 1 are positive voltage type anti-explosion electrical control combination sideboard one provided by the invention preferred embodiments, Fig. 2 is the structural representation of multiple cabinet units of the positive voltage type anti-explosion electrical control combination sideboard shown in Fig. 1.Described positive voltage type anti-explosion electrical control combination sideboard 1 comprises multiple cabinet unit 11, feeder 13, pressure sensor group 15, explosion-proof controller 17 and volume control device 19.Multiple described cabinet unit 11 connect successively be spliced into one; cabinet unit 11 described in each is connected with described feeder 13; described feeder 13 is for carrying protective gas to described cabinet unit 11; described pressure sensor group 15 is located at described cabinet unit 11; and for measuring its external and internal pressure; described explosion-proof controller 17 controls described feeder 13 to maintain the pressure in described cabinet unit 11, and described volume control device 19 is electrically connected with described explosion-proof controller 17.
The explosion-proof cell 113 that described cabinet unit 11 comprises plemum 111 and is located at bottom described plemum 111.
Described plemum 111 comprises multiple plemum gas access 1111 and multiple plemum gas vent 1113, compressed air or other non-flammable gases enter described plemum 111 by described plemum gas access 1111, and unnecessary compressed air or other non-flammable gases discharge described plemum 111 by described plemum gas vent 1113.Described plemum 111 also comprises display floater 1115, pressure difference switch 1117 and alarm 1119, and described display floater 1115 is connected with described pressure sensor group 15, and described pressure difference switch 1117 is connected with described alarm 1119.
Described explosion-proof cell 113 comprises manual exhaust valve 1131 and automatic exhaust steam valve 1133, and the plemum gas vent 1113 bottom described plemum 111 is located at respectively by described manual exhaust valve 1131 and described automatic exhaust steam valve 1133.
Described feeder 13 comprises compressed air source unit 131 and conveying device 133.Described compressed air source unit 131 for the preparation of pure air, and by described conveying device 133 to release guard gas in described cabinet unit 11.
Described conveying device 133 comprises control valve 1331, supply air line 1333, allocation component 1335 and injection apparatus 1337.Described control valve 1331 is connected with described compressed air source unit 131, and the two ends of described supply air line 1333 are communicated with described allocation component 1335 with described control valve 1331 respectively, and described allocation component 1335 is located at described plemum 111.One end of described allocation component 1335 is provided with multiple points of stream interfaces, and a multiple described point stream interface is communicated with multiple described injection apparatus 1337 one_to_one corresponding.
Described control valve 1331 comprises switch valve 13311, pressure-reducing valve 13313 and choke valve 13315, described switch valve 13311, described pressure-reducing valve 13313 and described choke valve 13315 are communicated with setting successively, described switch valve 13311 is connected with described compressed air source unit 131, described choke valve 13315 is connected with described supply air line 1333, and described switch valve 13311 closes on described compressed air source unit 131 arranges, described choke valve 13315 closes on described injection apparatus 1337 and arranges.
Described switch valve 13311 is for controlling described compressed air source unit 131 whether air feed.
Described pressure-reducing valve 13313 is for controlling described compressed air source unit 131 supply gas pressure.
Described choke valve 13315 is for adjusting described compressed air source unit 131 air feed speed.
Described injection apparatus 1337 is located in the plemum 111 of described cabinet unit 11, and described injection apparatus 1337 is communicated with a point stream interface one_to_one corresponding for described allocation component 1335.In the present embodiment, the arrangement of multiple described injection apparatus 1337 can adjust according to the installation situation of the distribution system in described plemum 111.
Described pressure sensor group 15 comprises the first pressure sensor 151 and the second pressure sensor 153.Described first pressure sensor 151 is positioned at outside described cabinet unit 11, and for measuring the force value of external environment condition, described second pressure sensor 153 is positioned at inside described cabinet unit 11, for measuring described plemum 111 internal pressure.Described first pressure sensor 151 and the second pressure sensor 153 all connect described display floater 1115, described pressure difference switch 1117 and described alarm 1119.
Described explosion-proof controller 17 is electrically connected with described switch valve 13311 and described pressure-reducing valve 13313 respectively, and controls described switch valve 13311 and described pressure-reducing valve 13313 respectively.
Described volume control device 19 is fixedly arranged on described plemum 111 outer wall, and is electrically connected with described explosion-proof controller 17.Described volume control device 19 comprises sleeve pipe 191, micromachine 193, throttle shaft 195 and motor output shaft 197.Described supply air line 1333 is connected with described sleeve pipe 191 one end, described sleeve pipe 191 is fixedly connected with described micromachine 193, described micromachine 193 is fixedly arranged on described cabinet unit 11 outer wall, and be electrically connected with described explosion-proof controller 17, described sleeve pipe 191 other end and described supply air line 1333 are connected and fixed, and described supply air line 1333 is communicated with described plemum 111.Be provided with described throttle shaft 195 in described sleeve pipe 191, and be connected with described sleeve pipe 191 inner thread, described throttle shaft 195 is threaded with described motor output shaft 197.
The operating state of described positive voltage type anti-explosion electrical control combination sideboard 1 comprises purge mode, leakage compensation pattern and interval purge mode.
When described positive voltage type anti-explosion electrical control combination sideboard 1 is taken a breath, press the start key of described display floater 1115, described switch valve 13311 is opened, described explosion-proof controller 17 controls described pressure-reducing valve 13313 and described volume control device 19 arrives purge mode operating state, in this mode, described micromachine 193 rotates, drive described throttle shaft 195 mobile in described sleeve pipe 191, open described choke valve 13315, described compressed air source unit 131 starts to be filled with pure air to described cabinet unit 11, described pure air purges described cabinet unit 11 inside, and by described plemum gas vent 1113, hazardous gas inner a small amount of for described cabinet unit 11 is discharged.In this scavenging period, openings of sizes, the time of exchanging gas of described choke valve 13315 control by described micromachine 193, the control command that described micromachine 193 is sent by described explosion-proof controller 17 controls, when ventilation volume is five times of plemum net volume, described throttle shaft 195 slowly turns down the openings of sizes of described choke valve 13315 under the effect of described micromachine 193, and ventilation terminates.After malleation in described cabinet unit 11 rises to 70Pa, described positive voltage type anti-explosion electrical control combination sideboard 1 starts power supply, and when the malleation in described cabinet unit 11 rises to 150Pa, described purge mode quits work, and described leakage compensation pattern is started working.
Under described leakage compensation pattern, described switch valve 13311 is opened, described explosion-proof controller 17 controls described pressure-reducing valve 13313 and described choke valve 13315 arrives leakage compensation mode state, described compressed air source unit 131 reduces the air demand to described cabinet unit 11, described explosion-proof controller 17 according to the detection Data Control of described second pressure sensor 153 choke valve 13315 thus the pressure maintained in described cabinet unit 11 in normal range (NR).
The malleation value of described cabinet unit 11 inside lower than 70Pa or/and after described leakage compensation work pattern a period of time, described interval purge mode is started working, under described interval purge mode, described explosion-proof controller 17 controls described pressure-reducing valve 13313 and described choke valve 13315 to strengthen the air demand of described compressed air source unit 131 to described cabinet unit 11, the temperature running described cabinet unit 11 inside after a period of time can be reduced, maintain the malleation value of described cabinet unit 11 inside and discharge the inflammable substance of release in a small amount of hazardous gas or electric equipment that described cabinet unit 11 inside may exist.
Described positive voltage type anti-explosion electrical control combination sideboard 1 provided by the invention has following beneficial effect:
One, multiple described cabinet unit 11 of the present invention is spliced into one, and the occasion of multiple cabinet of satisfying the demand, solves the problem of communication and cabling complexity between described cabinet unit 11.
Two, the present invention regulates the uninterrupted of described choke valve 13315 by described volume control device 19, thus accurately controls ventilation volume, and guarantees that the malleation value of described cabinet unit 11 inside is in stable state.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a positive voltage type anti-explosion electrical control combination sideboard, it is characterized in that, comprise multiple cabinet unit, pressure sensor group, volume control device, feeder and explosion-proof controller, described multiple cabinet unit is spliced into one successively and cabinet unit described in each is equipped with described pressure sensor group and described volume control device, described feeder is connected with described multiple cabinet unit, and described explosion-proof controller is electrically connected with described pressure sensor group, described volume control device and described feeder respectively.
2. positive voltage type anti-explosion electrical control combination sideboard according to claim 1, it is characterized in that, described feeder comprises compressed air source unit and conveying device, described conveying device comprises control valve, supply air line, allocation component and injection apparatus, described control valve is communicated with described compressed air source unit, described supply air line two ends are connected with described allocation component with described control valve respectively, described allocation component is communicated with one by one with multiple described injection apparatus, and the two is located in described multiple cabinet unit respectively.
3. positive voltage type anti-explosion electrical control combination sideboard according to claim 2, it is characterized in that, described control valve comprises switch valve, pressure-reducing valve and choke valve, described switch valve, described pressure-reducing valve and described choke valve are communicated with successively, described switch valve closes on described compressed air source unit and is communicated with it, and described choke valve closes on described injection apparatus and is communicated with it.
4. positive voltage type anti-explosion electrical control combination sideboard according to claim 1, it is characterized in that, described volume control device comprises sleeve pipe, throttle shaft and micromachine, described throttle shaft is located in described sleeve pipe, and adopting engagement thread to be connected with described sleeve pipe, described throttle shaft is connected with described micromachine.
5. positive voltage type anti-explosion electrical control combination sideboard according to claim 4, is characterized in that, described micromachine is fixedly arranged on described cabinet unit outer wall.
6. positive voltage type anti-explosion electrical control combination sideboard according to claim 1, it is characterized in that, described cabinet unit comprises plemum and is positioned at the explosion-proof cell bottom described plemum, described explosion-proof cell comprises manual exhaust valve and automatic exhaust steam valve, and described manual exhaust valve and described automatic exhaust steam valve are located at described explosion-proof cell inwall and are communicated with described plemum respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510796533.XA CN105375353A (en) | 2015-11-18 | 2015-11-18 | Positive pressure explosion-proof electrical control combination cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510796533.XA CN105375353A (en) | 2015-11-18 | 2015-11-18 | Positive pressure explosion-proof electrical control combination cabinet |
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| Publication Number | Publication Date |
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| CN105375353A true CN105375353A (en) | 2016-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510796533.XA Pending CN105375353A (en) | 2015-11-18 | 2015-11-18 | Positive pressure explosion-proof electrical control combination cabinet |
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| CN (1) | CN105375353A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108668493A (en) * | 2017-03-28 | 2018-10-16 | 中国石油化工股份有限公司 | A kind of explosion-protection equipment of combined type pressurized enclosure |
| CN112631045A (en) * | 2020-12-23 | 2021-04-09 | 中国兵器装备集团自动化研究所 | Visual explosion-proof system with heat dissipation function |
| CN113359891A (en) * | 2021-06-23 | 2021-09-07 | 库卡机器人制造（上海）有限公司 | Positive pressure explosion-proof system and control method and device thereof, spraying device and storage medium |
| CN114800464A (en) * | 2022-04-29 | 2022-07-29 | 深圳市大族机器人有限公司 | Explosion-proof type cooperative robot and explosion-proof method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108668493A (en) * | 2017-03-28 | 2018-10-16 | 中国石油化工股份有限公司 | A kind of explosion-protection equipment of combined type pressurized enclosure |
| CN112631045A (en) * | 2020-12-23 | 2021-04-09 | 中国兵器装备集团自动化研究所 | Visual explosion-proof system with heat dissipation function |
| CN113359891A (en) * | 2021-06-23 | 2021-09-07 | 库卡机器人制造（上海）有限公司 | Positive pressure explosion-proof system and control method and device thereof, spraying device and storage medium |
| CN114800464A (en) * | 2022-04-29 | 2022-07-29 | 深圳市大族机器人有限公司 | Explosion-proof type cooperative robot and explosion-proof method thereof |
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