CN109381832B - Low-pressure carbon dioxide fire extinguishing system - Google Patents
Low-pressure carbon dioxide fire extinguishing system Download PDFInfo
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- CN109381832B CN109381832B CN201710666535.6A CN201710666535A CN109381832B CN 109381832 B CN109381832 B CN 109381832B CN 201710666535 A CN201710666535 A CN 201710666535A CN 109381832 B CN109381832 B CN 109381832B
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C35/00—Permanently-installed equipment
- A62C35/02—Permanently-installed equipment with containers for delivering the extinguishing substance
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
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- Business, Economics & Management (AREA)
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- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The invention discloses a low-pressure carbon dioxide fire extinguishing system. The fire extinguishing device comprises a storage tank, a starting pipeline and CO 2 Delivery line, start-up line and CO 2 The conveying pipelines are all communicated with the storage tank, and CO 2 There are main pipeline and two at least transport branch road on the transfer pipeline, transport branch road and main pipeline intercommunication, there are selection valve and nozzle on the branch road, there are maintenance valve, main valve and pressure switch on the main pipeline of transport, the start-up pipeline is including starting main pipeline and two at least start-up branch road, start main pipeline and start-up branch road intercommunication, there are start-up pipeline maintenance valve on the main pipeline of starting, relief pressure valve and first solenoid valve, start-up main pipeline is connected with the main valve, there is the second solenoid valve on the start-up branch road, start-up branch road is connected with the selection valve, there is refrigerating unit on the storage tank, heating device is on the storage tank. The invention meets the fire-fighting requirement in low-temperature severe environment areas, is convenient to maintain, adopts a heating and refrigerating dual mode, and expands the application environment.
Description
Technical Field
The invention relates to a low-pressure carbon dioxide fire extinguishing system, and belongs to the technical field of fire protection.
Background
A fire extinguishing system in which the carbon dioxide fire extinguishing agent is stored at a temperature of-18 ℃ to-20 ℃ is called a low-pressure carbon dioxide fire extinguishing system; the storage pressure of the fire extinguishing agent is reduced by adopting a refrigeration system to improve the storage capacity of the container. If the ambient temperature is lower than-23 ℃, the system should be equipped with a heating device at the same time, and the storage pressure of the low-pressure carbon dioxide fire extinguishing system is stabilized in the range of 1.72 MPa-2.24 MPa by the linkage control of the heating and refrigerating devices. The temperature is high, the carbon dioxide storage pressure is high, the container is unsafe, and the filling amount is low; the temperature is low, the carbon dioxide storage pressure is low, the pressure at the tail end of the spray head cannot be guaranteed, and the fire extinguishing time and the fire extinguishing concentration cannot be guaranteed.
The domestic low-pressure carbon dioxide fire extinguishing system is generally provided with a refrigerating device, does not have a heating device, and is rarely applied to places with the environmental temperature lower than-23 ℃. The storage place adopts an air conditioner or a heating system to ensure that the ambient temperature is more than-23 ℃. In the industrial field of extremely cold areas, the environment temperature is low, and a low-pressure carbon dioxide fire extinguishing system is required to have heating/refrigerating linkage temperature control so as to meet the industrial application requirements.
Disclosure of Invention
In view of the above, the invention provides a low-pressure carbon dioxide fire extinguishing system which meets the fire-fighting requirement of low-temperature severe environment areas, is convenient to maintain, adopts a dual heating and refrigerating mode, and expands the application environment.
The invention solves the technical problems by the following technical means:
the invention relates to a low-pressure carbon dioxide fire extinguishing system which comprises a fire extinguishing device, a heating device and a control cabinet, wherein the fire extinguishing device comprises a storage tank, a starting pipeline and CO 2 Delivery line, start-up line and CO 2 The conveying pipelines are all communicated with the storage tank, and CO 2 The automatic control device comprises a conveying pipeline, a main conveying pipeline, a selection valve, a nozzle, an overhaul valve, a pressure switch and a main valve, wherein the main conveying pipeline is provided with the main conveying pipeline and at least two conveying branches, the branch conveying pipeline is provided with the selection valve and the nozzle, the main conveying pipeline is provided with the overhaul valve, the pressure switch and the main valve, the starting pipeline comprises a main starting pipeline and at least two starting branches, the main starting pipeline is communicated with the main starting pipeline, the main starting pipeline is provided with a main starting pipeline maintenance valve, a pressure reducing valve and a first electromagnetic valve, the main starting pipeline is connected with the main valve, the second electromagnetic valve is arranged on the main starting pipeline, the starting branches are connected with the selection valve, a refrigerating unit is arranged on a storage tank, and the heating device is arranged on the storage tank, and is provided with an audible-visual alarm, a deflation display lamp, a manual release/stop button and an electrical isolation maintenance switch.
The heating device is provided with two groups of heating elements, the heating elements are used in a standby mode, the heating elements are connected in parallel by adopting a plurality of groups of low-power heating elements, the heating elements are made of stainless steel, the stainless steel pipe sleeve is sleeved outside the heating elements, and the stainless steel pipe sleeve is fixed on the storage tank.
The heating device, the refrigerating unit, the pressure switch, the first electromagnetic valve and the second electromagnetic valve are all connected with the control cabinet.
The control cabinet is provided with a heating/refrigerating button, the heating/refrigerating button controls the starting and stopping of the heating device and the refrigerating unit, and the pressure switch controls the starting and stopping of the heating/refrigerating button.
The number of the conveying branches is the same as that of the starting branches, and the conveying branches are in one-to-one correspondence connection with the starting branches through the selection valves.
And a safety valve is arranged on the conveying main pipeline.
In a low-temperature environment, due to low temperature and poor fluidity and low pressure of the liquid carbon dioxide, a part of the liquid carbon dioxide can be vaporized by adopting a heating mode, so that a certain pressure is generated, the flow of the liquid carbon dioxide is promoted, and the device is suitable for the low-temperature environment. Meanwhile, the refrigerator set is arranged and can be used in a high-temperature environment, the heating/refrigerating button is arranged on the control cabinet and controls the heating device and the refrigerator set to start and stop, the pressure switch controls the heating/refrigerating button to start and stop, and the pressure of the storage tank is detected through the pressure switch, so that whether the heating device or the refrigerator set is started is judged.
The invention adopts the heating device of the low-pressure carbon dioxide fire extinguishing system, the heater is arranged in the storage tank, and the invention is safe, beautiful and high in heat efficiency. Adopts a double redundancy design, namely one main part and one standby part. And a plurality of groups of small power are connected in parallel, so that the impact of a power grid is reduced, the start and stop are stable and reliable, and the heating is uniform. The SS316 stainless steel heater is adopted, and the SS316 stainless steel sleeve is sleeved outside, so that low-temperature application and online replacement are realized. The pressure switch is used for controlling the heating/refrigerating start and stop, so that the falling into the refrigerating and heating cycle is avoided. And a two-stage safety valve is adopted to ensure the safety of the system.
The beneficial effects of the invention are as follows: expanding the application environment of the low-pressure carbon dioxide fire extinguishing system and meeting the fire protection requirement of the low-temperature environment; the built-in heater is safe and reliable and has high efficiency; the online maintenance and replacement are realized, the shutdown and the carbon dioxide discharge are not needed, the environment is protected, the economy is realized, and the production is not influenced. Provides a solution for a low-pressure carbon dioxide fire extinguishing system in extremely cold areas and industrial fields. And a plurality of groups of redundant heating schemes are provided, shutdown is avoided, and the fire-fighting reliability is improved. The heater can be replaced on line, so that maintenance, economy, environmental protection and reliability after shutdown and carbon dioxide emission are avoided.
Drawings
The invention is further described below with reference to the drawings and examples.
Fig. 1 is a schematic structural view of the present invention.
FIG. 2 is a schematic view of a heating element according to the present invention.
Detailed Description
The invention will be described in detail below with reference to the accompanying drawings, as shown in fig. 1: the low-pressure carbon dioxide fire extinguishing system comprises a fire extinguishing device 1, a heating device 2 and a control cabinet 3, wherein the fire extinguishing device 1 comprises a storage tank 10, a starting pipeline 11 and CO 2 Delivery line 12, start-up line 11 and CO 2 The conveying pipelines 12 are all communicated with the storage tank 10, and CO 2 The automatic air conditioner is characterized in that a conveying main pipeline 120 and at least two conveying branches 121 are arranged on the conveying pipeline 12, the conveying branches 121 are communicated with the conveying main pipeline 120, a selection valve 122 and a nozzle 124 are arranged on the branches 121, an overhaul valve 125, a main valve 126 and a pressure switch 123 are arranged on the conveying main pipeline 120, the starting pipeline 11 comprises a starting main pipeline 110 and at least two starting branches 111, the starting main pipeline 110 is communicated with the starting branches 111, a starting pipeline maintenance valve 112, a pressure reducing valve 113 and a first electromagnetic valve 114 are arranged on the starting main pipeline 110, the starting main pipeline 110 is connected with the main valve 126, a second electromagnetic valve 115 is arranged on the starting branches 111, the starting branches 111 are connected with the selection valve 122, a refrigerating unit 13 is arranged on the storage tank 10, the heating device 2 is arranged on the storage tank 10, and an audible-visual alarm 30, a deflation display lamp 31, a manual release/stop button 32 and an electrical isolation switch 33 are arranged on the control cabinet 3.
The heating device 2 is provided with two groups of heating elements 21, the heating elements 21 are used in a standby mode, a plurality of groups of low-power heating elements are connected in parallel, the heating elements 21 are made of 316 stainless steel, a 316 stainless steel pipe sleeve is sleeved outside the heating elements, and the 316 stainless steel pipe sleeve is fixed on the storage tank 10.
The heating device 2, the refrigerating unit 13, the pressure switch 123, the first electromagnetic valve 114 and the second electromagnetic valve 115 are all connected with the control cabinet 3.
The control cabinet 3 is provided with a heating/cooling button 34, the heating/cooling button 34 controls the heating device 2 and the refrigerating unit 13 to start and stop, and the pressure switch 123 controls the heating/cooling button 34 to start and stop.
The number of the conveying branches 121 and the number of the starting branches 111 are the same, and the conveying branches 121 are connected with the starting branches 111 in a one-to-one correspondence through the selection valves 122.
The delivery main pipe 120 is provided with a relief valve 127.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.
Claims (6)
1. A low pressure carbon dioxide fire suppression system, characterized by: comprises a fire extinguishing device (1), a heating device (2) and a control cabinet (3), wherein the fire extinguishing device (1) comprises a storage tank (10), a starting pipeline (11) and CO 2 A delivery line (12), a start-up line (11) and CO 2 The conveying pipelines (12) are all communicated with the storage tank (10), and CO 2 Be provided with on delivery line (12) and carry main line (120) and two at least delivery branch road (121), delivery branch road (121) and delivery main line (120) intercommunication, be provided with selection valve (122) and nozzle (124) on branch road (121), be provided with on delivery main line (120) and examine and repair valve (125), pressure switch (123) and main valve (126), start-up line (11) including starting main line (110) and two at least start-up branch road (111), start-up main line (110) and start-up branch road (111) intercommunication, be provided with on start-up main line (110) and start-up line maintenance valve (112), relief pressure valve (113) and first solenoid valve (114), start-up main line (110) are connected with main valve (126), be provided with second solenoid valve (115) on start-up branch road (111) are connected with selection valve (122), be provided with refrigeration unit (13) on storage tank (10), heating device (2) set upOn the storage tank (10), an audible and visual alarm (30), a deflation display lamp (31), a manual release/stop button (32) and an electrical isolation maintenance switch (33) are arranged on the control cabinet (3).
2. A low pressure carbon dioxide fire suppression system as recited in claim 1, wherein: the heating device (2) is provided with two groups of heating elements (21), the heating elements (21) are used in a standby mode, a plurality of groups of low-power heating elements are connected in parallel, the heating elements (21) are made of 316 stainless steel, a 316 stainless steel tube sleeve is sleeved outside the heating elements, and the 316 stainless steel tube sleeve is fixed on the storage tank (10).
3. A low pressure carbon dioxide fire suppression system as recited in claim 1, wherein: the heating device (2), the refrigerating unit (13), the pressure switch (123), the first electromagnetic valve (114) and the second electromagnetic valve (115) are all connected with the control cabinet (3).
4. A low pressure carbon dioxide fire suppression system as recited in claim 1, wherein: the control cabinet (3) is provided with a heating/refrigerating button (34), the heating/refrigerating button (34) controls the starting and stopping of the heating device (2) and the refrigerating unit (13), and the pressure switch (123) controls the starting and stopping of the heating/refrigerating button (34).
5. A low pressure carbon dioxide fire suppression system as recited in claim 1, wherein: the number of the conveying branches (121) and the number of the starting branches (111) are the same, and the conveying branches (121) are connected with the starting branches (111) in a one-to-one correspondence manner through selection valves (122).
6. A low pressure carbon dioxide fire suppression system as recited in claim 1, wherein: the conveying main pipeline (120) is provided with a safety valve (127).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710666535.6A CN109381832B (en) | 2017-08-07 | 2017-08-07 | Low-pressure carbon dioxide fire extinguishing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710666535.6A CN109381832B (en) | 2017-08-07 | 2017-08-07 | Low-pressure carbon dioxide fire extinguishing system |
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| Publication Number | Publication Date |
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| CN109381832A CN109381832A (en) | 2019-02-26 |
| CN109381832B true CN109381832B (en) | 2023-09-01 |
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| CN201710666535.6A Active CN109381832B (en) | 2017-08-07 | 2017-08-07 | Low-pressure carbon dioxide fire extinguishing system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109771872A (en) * | 2019-03-15 | 2019-05-21 | 威特龙消防安全集团股份公司 | A kind of critical state carbon-dioxide fire engine equipment of the urgent increasing apparatus of band |
| CN111911221A (en) * | 2020-08-14 | 2020-11-10 | 辽宁工程技术大学 | Low-oxygen treatment method for corners on stope face |
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| CN2550002Y (en) * | 2002-07-17 | 2003-05-14 | 代福全 | Fixed fire extinguisher |
| CN1454685A (en) * | 2003-03-20 | 2003-11-12 | 姜华 | Fire extinguishing apparatus using liquid nitrogen as fire extinguishing agent |
| CN1569285A (en) * | 2004-05-12 | 2005-01-26 | 华中科技大学 | Fixed high pressure water smoke fire-extinguishing system |
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| CN109381832A (en) | 2019-02-26 |
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