CN203214113U - Positive pressure ventilation control cabinet - Google Patents
Positive pressure ventilation control cabinet Download PDFInfo
- Publication number
- CN203214113U CN203214113U CN 201320172944 CN201320172944U CN203214113U CN 203214113 U CN203214113 U CN 203214113U CN 201320172944 CN201320172944 CN 201320172944 CN 201320172944 U CN201320172944 U CN 201320172944U CN 203214113 U CN203214113 U CN 203214113U
- Authority
- CN
- China
- Prior art keywords
- positive pressure
- control cabinet
- pressure ventilation
- cabinet
- valve
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The utility model relates to a positive pressure ventilation control cabinet. In order to solve the technical problem, the provided control cabinet shall be able to prevent explosive mixtures from entering in a working site efficiently so as to realize an anti-explosion purpose, and the control cabinet has the characteristics of a simple structure and use convenience. The technical scheme is that: a cabinet body of the control cabinet is partitioned into a primary cavity and a secondary cavity; the cabinet body is internally provided with a positive pressure ventilation system; the positive pressure ventilation system comprises an air source, valve, a filtering and reducing valve, a pressure gage, an intake air electromagnetic valve, a throttle valve, the primary cavity and a relief valve, all of which are connected in sequence through pipelines; a control unit of the positive pressure ventilation system is installed in the secondary cavity; the primary cavity is internally provided with an electric control device of the control cabinet. The control unit comprises a single-chip and an alarm connected to the single-chip.
Description
Technical field
The utility model relates to a kind of match equipment of steam turbine, is specifically related to a kind of control cabinet of steam turbine.
Background technique
Generally speaking, the control cabinet of steam turbine is installed in user's the control room, and not dangerous gas enters, and is less demanding to the integrated explosion proof system of control cabinet.Some special application but (in vinyl acetate production), the user need be installed in the scene with the control cabinet of steam turbine, because on-the-spot dangerous property gas, on-the-spot if conventional control cabinet is directly placed, danger is bigger.
The model utility content
The purpose of this utility model is to overcome the deficiency that the above-mentioned background technology exists, provide a kind of steam turbine control cabinet matched improvement, explosive mixture during this control cabinet should be able to be avoided on the yard effectively enters, thereby reach explosion-proof purpose, and have characteristics simple in structure, easy to use.
The utility model proposes following technological scheme:
The positive pressure ventilation control cabinet, it is characterized in that: the cabinet of described control cabinet is separated into main chamber and secondary chamber two-part, be provided with the positive pressure ventilation system in the cabinet, this positive pressure ventilation system comprises source of the gas, gate valve, filtering pressure reducing valve, pressure gauge, air inlet solenoid valve, throttle valve, described main chamber and the Decompression valves that connects in regular turn by pipeline, the control unit of positive pressure ventilation system is installed in the described secondary chamber, and the electric control equipment of control cabinet is installed in the main chamber.
Described control unit comprises single-chip microcomputer and connected alarm.
The beneficial effects of the utility model are:
Compare with traditional control cabinet, novel control cabinet has following several advantages:
1, can adapt to various environment, also can proper functioning in the environment of dangerous gas;
2, Chong Xinsheji control cabinet is less demanding to various analyses and the measuring instrument installed in the main chamber, and versatility is stronger;
3, positive pressure ventilation type is uninterrupted air feed continuously, and the work calories of electric control equipment can be taken away at any time in the main chamber, has good heat sinking function;
The utility model has used the control cabinet of main chamber, secondary cavity configuration, common electric control equipment packed into one be full of in the main chamber of shielding gas, the pressure that guarantees main chamber internal protection gas is higher than external environment condition gas, in order to avoid explosive mixture enters main chamber, thereby reaches explosion-proof purpose; And the utility model is simple in structure, and is easy to use, cost is lower, has market prospects preferably.
Description of drawings
Fig. 1 is main TV structure schematic representation of the present utility model.
Fig. 2 be among Fig. 1 A-A to the sectional structure schematic representation.
Fig. 3 be among Fig. 1 B-B to the sectional structure schematic representation.
Fig. 4 is left TV structure schematic representation of the present utility model.
Embodiment
Below in conjunction with Figure of description, the utility model is described in further detail, but the utility model is not limited to following examples.
As Fig. 1-shown in Figure 4, positive pressure ventilation control cabinet described in the utility model, its cabinet is separated into main chamber 1 and secondary chamber 2 two-part, wherein main chamber volume is bigger, the electric control equipment of control cabinet can be installed, be provided with the positive pressure ventilation system in the cabinet, this positive pressure ventilation system comprises source of the gas 3, gate valve 4, filtering pressure reducing valve 5, pressure gauge 6, air inlet solenoid valve 7, throttle valve 8, described main chamber 1 and the Decompression valves 9 that connects in regular turn by pipeline 10, and the control unit of positive pressure ventilation system is installed in the described secondary chamber and (omits and do not draw).
Described control unit is conventional control unit, comprises single-chip microcomputer and connected alarm (can adopt explosion-proof electric bell).
The gas that described source of the gas provides is for purifying air or nitrogen.
Working principle of the present utility model is:
1, connect source of the gas, the gate valve of opening air feed carries out air feed, and filtering pressure reducing valve pressure is set at 0.2MPa;
2, connect power supply, Single-chip Controlling air inlet solenoid valve gets electric connection gas circuit, and (relative pressure was 400～600Pa) to (350Pa) trigger, enters the ventilation timing stage (about 40min) after relative pressure rose to high limit in the main chamber, time-delay finishes laggard pneumoelectric magnet valve dead electricity closes, and ventilation finishes;
3, enter normal working, the electric control equipment in the main chamber can get electric operation, and at this moment relative pressure is stabilized in the numerical value of 150～250Pa in the main chamber, can adjust throttle valve if any deviation, sets relative pressure in the main chamber usually about 200Pa;
4, in the course of the work, when relative pressure is lower than 110Pa in the main chamber, enter automatic tonifying Qi state, the air inlet solenoid valve gets electric connection gas circuit, and the laggard pneumoelectric magnet valve of the paramount limit of tonifying Qi pressure dead electricity is closed, and stops tonifying Qi;
5, when relative pressure is lower than 80Pa in the main chamber, enter the lower bound state of alarm, alarm equipment alarm is replenished input as source of the gas, when relative pressure is higher than 80Pa in the main chamber, stops to report to the police, and the electric control equipment in the main chamber can continue normal operation;
6, when relative pressure is lower than 60Pa in the main chamber, low pressure continues to report to the police, and exports main chamber control supply disconnecton signal, and system reenters the ventilation time status;
7, when relative pressure is higher than 350Pa in the main chamber, enter high limit state of alarm, warning device is reported to the police, and the Decompression valves exhaust can stop operation under positive pressure when needed at any time.
Claims (2)
1. positive pressure ventilation control cabinet, it is characterized in that: the cabinet of described control cabinet is separated into main chamber (1) and secondary chamber (2) two-part, be provided with the positive pressure ventilation system in the cabinet, this positive pressure ventilation system comprises source of the gas (3), gate valve (4), filtering pressure reducing valve (5), pressure gauge (6), air inlet solenoid valve (7), throttle valve (8), described main chamber (1) and the Decompression valves (9) that connects in regular turn by pipeline (10), the control unit of positive pressure ventilation system is installed in the described secondary chamber, and the electric control equipment of control cabinet is installed in the main chamber.
2. positive pressure ventilation control cabinet according to claim 1, it is characterized in that: described control unit comprises single-chip microcomputer and connected alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320172944 CN203214113U (en) | 2013-04-08 | 2013-04-08 | Positive pressure ventilation control cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320172944 CN203214113U (en) | 2013-04-08 | 2013-04-08 | Positive pressure ventilation control cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203214113U true CN203214113U (en) | 2013-09-25 |
Family
ID=49203659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320172944 Expired - Fee Related CN203214113U (en) | 2013-04-08 | 2013-04-08 | Positive pressure ventilation control cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203214113U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104197731A (en) * | 2014-09-15 | 2014-12-10 | 常州宝仪机电设备有限公司 | Control cabinet of explosion-proof kiln |
| CN105376997A (en) * | 2015-11-18 | 2016-03-02 | 南阳市中通防爆电机电器有限公司 | Positive-pressure explosion-proof control cabinet and control method thereof |
| CN107645875A (en) * | 2017-09-11 | 2018-01-30 | 大庆宏富来电气设备制造有限公司 | Positive pressure anti-explosion controlling cubicle |
| CN113910266A (en) * | 2021-12-16 | 2022-01-11 | 佛山华数机器人有限公司 | A explosion-proof switch board of malleation for spraying robot |
-
2013
- 2013-04-08 CN CN 201320172944 patent/CN203214113U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104197731A (en) * | 2014-09-15 | 2014-12-10 | 常州宝仪机电设备有限公司 | Control cabinet of explosion-proof kiln |
| CN105376997A (en) * | 2015-11-18 | 2016-03-02 | 南阳市中通防爆电机电器有限公司 | Positive-pressure explosion-proof control cabinet and control method thereof |
| CN105376997B (en) * | 2015-11-18 | 2018-12-14 | 南阳市中通防爆电机电器有限公司 | Control method of positive pressure explosion-proof control cabinet |
| CN107645875A (en) * | 2017-09-11 | 2018-01-30 | 大庆宏富来电气设备制造有限公司 | Positive pressure anti-explosion controlling cubicle |
| CN113910266A (en) * | 2021-12-16 | 2022-01-11 | 佛山华数机器人有限公司 | A explosion-proof switch board of malleation for spraying robot |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203214113U (en) | Positive pressure ventilation control cabinet | |
| CN203500849U (en) | Equipment for reducing pressure of natural-gas cylinder | |
| CN203387053U (en) | High-tension power distribution cabinet with extinguishing device | |
| CN204638022U (en) | One joins ammonia device automatically | |
| CN107143434A (en) | A kind of GVU devices and control method | |
| CN202256292U (en) | Calibration device special for sulfur hexafluoride (SF6) concentration alarm | |
| CN204884086U (en) | Device was revealed to natural gas during intelligence prevented family | |
| CN202661237U (en) | Air tightness detection device for three-clack valve of puncture outfit | |
| CN109630258A (en) | Gas supply of dual-fuel engine system peculiar to vessel | |
| CN209165044U (en) | A kind of combustible gas metering arrangement | |
| CN206035572U (en) | Engine crankcase surge damping valve | |
| CN204533705U (en) | A kind of family expenses anti-explosion gas emergency cut-off calutron | |
| CN205191226U (en) | Possesses gas pressure regulating system who detects stable transmission of atmospheric pressure | |
| CN204113653U (en) | Pump body structure, compound compressor and air-conditioning system | |
| CN203783759U (en) | Gas circuit device for dual-fuel engine of ship | |
| CN204785016U (en) | Explosion -proof valve base | |
| CN207334235U (en) | Portable aerating case | |
| CN203343119U (en) | Pre-purge positive pressure control system for increased safety motor | |
| CN208465351U (en) | A kind of filter core quick-changing type filtering pressure reducing valve | |
| CN203272923U (en) | Novel adjustable clamping type valve | |
| CN209264038U (en) | Explosion-proof step motor valve diaphragm gas meter built in one kind | |
| CN102819234B (en) | A kind of motor pre-boot ventilation control system | |
| CN203516251U (en) | Double-direction balance valve device | |
| CN203612980U (en) | Water purifier provided with safety valve | |
| CN205374193U (en) | Gas circulation fatigue performance testing arrangement |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130925 Termination date: 20150408 |
|
| EXPY | Termination of patent right or utility model |