CN211301865U - Liquid carbon dioxide automatic fire extinguishing system - Google Patents
Liquid carbon dioxide automatic fire extinguishing system Download PDFInfo
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- CN211301865U CN211301865U CN201921322008.4U CN201921322008U CN211301865U CN 211301865 U CN211301865 U CN 211301865U CN 201921322008 U CN201921322008 U CN 201921322008U CN 211301865 U CN211301865 U CN 211301865U
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Abstract
The utility model discloses a liquid carbon dioxide automatic fire extinguishing system. The system comprises a liquid carbon dioxide storage tank, a control valve group, a first pipeline, a second pipeline, a carbon dioxide gasification device, a temperature sensor and a controller; the control valve group is arranged at a liquid discharge port of the liquid carbon dioxide storage tank and is connected with the first pipeline, the second pipeline and the controller; the carbon dioxide gasification device is arranged on the second pipeline; the temperature sensor is arranged in the prevention and control area and is connected with the controller; the controller compares the temperature information acquired by the temperature sensor with a set temperature threshold range, generates a control instruction according to a comparison result, and sends the control instruction to the control valve group; and the control valve group controls the working states of the first pipeline and the second pipeline according to the control command. The utility model provides a liquid carbon dioxide automatic fire extinguishing system has improved liquid carbon dioxide's fire extinguishing efficiency.
Description
Technical Field
The utility model relates to a coal chemical industry enterprise technical field of putting out a fire especially relates to a liquid carbon dioxide automatic fire extinguishing system.
Background
Most of products produced by coal chemical enterprises are inflammable and explosive and the like, and fire disasters are easy to occur in storage places and production processes, so that the safety of lives and properties of people is seriously threatened. Traditional extinguishing device in place that coal chemical industry enterprise deposited to coal is direct liquid carbon dioxide method of annotating, but does not obviously heat up at conflagration initial stage surrounding environment temperature, if a large amount of liquid carbon dioxide if direct spout evaporation volume expansion 450 ~ 640 times from the pipeline, need absorb a large amount of heat simultaneously, the temperature drops sharply, liquid carbon dioxide becomes snowflake solid this moment, can lead to the fire control effect not to reach the ideal state of putting out a fire.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a liquid carbon dioxide automatic fire extinguishing system can improve liquid carbon dioxide's fire extinguishing efficiency.
In order to achieve the above object, the utility model provides a following scheme:
an automatic fire extinguishing system for liquid carbon dioxide, comprising:
the liquid carbon dioxide storage tank is used for storing liquid carbon dioxide;
the control valve group is arranged at a liquid discharge port of the liquid carbon dioxide storage tank;
the first pipeline and the second pipeline are respectively connected with the control valve group and extend to a prevention and control area;
a carbon dioxide gasification device installed on the second pipeline for gasifying the liquid carbon dioxide and converting the liquid carbon dioxide into gaseous carbon dioxide;
the temperature sensor is arranged in the prevention and control area and used for acquiring temperature information of the prevention and control area;
the controller is respectively connected with the control valve group and the temperature sensor and is used for comparing the temperature information with a set temperature threshold range, generating a control instruction according to a comparison result and sending the control instruction to the control valve group;
and the control valve group controls the working states of the first pipeline and the second pipeline according to the control command, wherein the working states comprise a conduction state and a closing state.
Optionally, the liquid carbon dioxide storage tank is a CPW-2.0 horizontal cryogenic liquid storage tank.
Optionally, the control valve group comprises a first drain valve and a second drain valve;
the first drainage valve is connected with the first pipeline and used for controlling the working state of the first pipeline according to the control instruction;
and the second liquid discharge valve is connected with the second pipeline and used for controlling the working state of the second pipeline according to the control command.
Optionally, the control valve set further comprises a safety valve, a residual liquid discharge valve, an emptying valve, a full-measuring analysis valve and a safety switching valve.
Optionally, the carbon dioxide gasification device is an electrically heated carbon dioxide gasifier.
Optionally, the liquid carbon dioxide automatic fire extinguishing system further includes an electromagnetic valve, the electromagnetic valve is disposed on a second pipeline between the carbon dioxide gasification device and the control area, is connected to the controller, and is configured to control, according to a control instruction of the controller, on/off of the second pipeline between the carbon dioxide gasification device and the control area.
Optionally, the liquid carbon dioxide automatic fire extinguishing system further comprises a pressure sensing device; the sensing end of the pressure sensing device is connected with the liquid carbon dioxide storage tank and is used for acquiring a pressure signal of the liquid carbon dioxide storage tank; the output end of the pressure sensing device is connected with the controller and is used for transmitting the pressure signal to the controller;
the controller is used for comparing the pressure signal with a set pressure threshold value and generating an alarm instruction when the pressure signal is smaller than the set pressure threshold value.
Optionally, the liquid carbon dioxide automatic fire extinguishing system further comprises:
and the alarm is connected with the controller and used for receiving the alarm instruction and giving an alarm according to the alarm instruction.
Optionally, the liquid carbon dioxide automatic fire extinguishing system further comprises:
and the liquid level meter is arranged on the side wall of the liquid carbon dioxide storage tank.
According to the utility model provides a concrete embodiment, the utility model discloses a following technological effect: the utility model provides a pair of liquid carbon dioxide automatic fire extinguishing system includes liquid carbon dioxide storage tank, valves, first pipeline, second pipeline, carbon dioxide gasification equipment, temperature sensor, controller. And the controller controls the working states of the first pipeline and the second pipeline according to the temperature information of the prevention and control area acquired by the temperature sensor. The utility model discloses take liquid or gaseous carbon dioxide to put out a fire according to the temperature in the prevention and control area, improved liquid carbon dioxide's fire extinguishing efficiency, practice thrift the carbon dioxide raw materials of putting out a fire more.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an automatic fire extinguishing system for liquid carbon dioxide according to an embodiment of the present invention.
Reference numerals: 1-a liquid carbon dioxide storage tank, 2-a control valve group, 3-a first pipeline, 4-a second pipeline, 5-an electric heating carbon dioxide gasifier, 6-a prevention and control area, 7-a temperature sensor, 8-a controller, 9-a first liquid discharge valve, 10-a second liquid discharge valve and 11-an electromagnetic valve; 12-pressure sensing device, 13-liquid level meter, 14-electric heating tube, 15-platinum electric heating tube and 16-overflow port.
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.
The utility model aims at providing a liquid carbon dioxide automatic fire extinguishing system can improve liquid carbon dioxide's fire extinguishing efficiency.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
Fig. 1 is the utility model discloses liquid carbon dioxide automatic fire extinguishing systems's structural schematic diagram, as shown in fig. 1, the liquid carbon dioxide automatic fire extinguishing systems that this embodiment provided includes: liquid carbon dioxide storage tank 1, valve unit 2, first pipeline 3, second pipeline 4, carbon dioxide gasification equipment, temperature sensor 7 and controller 8.
Wherein the liquid carbon dioxide storage tank 1 stores liquid carbon dioxide; the control valve group 2 is arranged at a liquid discharge port of the liquid carbon dioxide storage tank 1, the first pipeline 3 and the second pipeline 4 are respectively connected with the control valve group 2, and the first pipeline 3 and the second pipeline 4 extend to a prevention and control area 6.
The temperature sensor 7 is installed in the prevention and control area 6, the temperature information of the prevention and control area 6 is collected, and the temperature sensor 7 sends the collected temperature information to the controller 8; the controller 8 compares the temperature information with a set temperature threshold range, and generates a control instruction according to a comparison result; and the controller 8 is further connected with a control valve group 2, and sends the control instruction to the control valve group 2, and the control valve group 2 controls the working states of the first pipeline 3 and the second pipeline 4 according to the control instruction, wherein the working states include a conduction state and a closing state.
In the automatic fire extinguishing system for liquid carbon dioxide provided by the present embodiment, the control valve group 2 includes a first drain valve 9 and a second drain valve 10.
The first drainage valve 9 is connected with the first pipeline 3 and is used for controlling the working state of the first pipeline 3 according to the control instruction;
the second drain valve 10 is connected with the second pipeline 4 and is used for controlling the working state of the second pipeline 4 according to the control instruction.
Wherein, the temperature interval corresponding to the seven-level early warning theory proposed for the prevention and control area is as shown in the first table:
watch 1
| Rank of | Phases | Name (R) | Temperature range |
| A | Latent stage | Early warning initial value | Tm<30～40℃ |
| II | Oxidation stage | Grey warning | Tm>30～40℃ |
| III | Self-heating stage | Blue warning | Tm>50～60℃ |
| Fourthly | Critical phase | Yellow early warning | Tm>70～80℃ |
| Five of them | Pyrolysis stage | Orange early warning | Tm>90～110℃ |
| Six ingredients | Fission phase | Red early warning | Tm>130～160℃ |
| Seven-piece | Stage of combustion | Black warning | Tm>210～350℃ |
Wherein the temperature threshold range is 70-80 ℃.
When the temperature information is less than 70 ℃, the controller 8 sends a first control instruction, the first drain valve 9 and the second drain valve 10 are both in a closed state under the control of the first control instruction, and the first pipeline 3 and the second pipeline 4 are not conducted. When the temperature information is 70-80 ℃, the controller 8 sends a second control instruction to the second liquid discharge valve 10, the second liquid discharge valve 10 is opened according to the second control instruction, meanwhile, the second pipeline 4 is conducted, liquid carbon dioxide is gasified into gaseous carbon dioxide through the carbon dioxide gasification device, and the gaseous carbon dioxide reaches the prevention and control area 6 through the second pipeline 4 to extinguish fire. When the temperature information is greater than 80 ℃, the controller 8 respectively sends out a third control command to the first drain valve 9 and the second drain valve 10, and the second drain valve 10 is closed according to the third control command; and the first liquid discharge valve 9 is opened according to the third control instruction, the first pipeline 3 is conducted, and the liquid dioxide directly reaches the prevention and control area 6 through the first pipeline 3 to extinguish the fire.
Specifically, the liquid carbon dioxide storage tank 1 is a CPW-2.0 horizontal low-temperature liquid storage tank.
In order to better control the liquid carbon dioxide storage tank 1, the control valve group 2 further comprises a safety valve, a residual liquid discharge valve, an emptying valve, a full-measuring analysis valve and a safety switching valve.
The safety valve is normally closed at ordinary times, and when the pressure of the liquid carbon dioxide storage tank 1 is too high, the safety valve is opened to discharge the redundant pressure of the liquid carbon dioxide storage tank 1; the residual liquid discharge valve is used for automatically discharging residual liquid and preventing air from entering the liquid carbon dioxide storage tank 1; the emptying valve is used for directly opening the liquid carbon dioxide storage tank 1 when an emergency occurs, and quickly discharging the liquid carbon dioxide; the fullness measuring analysis valve is used for preventing the liquid carbon dioxide storage tank 1 from being filled with excessive liquid carbon dioxide; the safety switching valve is used for switching the standby valve into a safety valve for use.
In order to gasify liquid carbon dioxide into gaseous carbon dioxide, the carbon dioxide gasification apparatus is an electrically heated carbon dioxide gasifier 5. As shown in fig. 1, the electrically heated carbon dioxide vaporizer 5 comprises a liquid inlet, an electric heating tube 14, a platinum electric heating tube 15, an overflow port 16 and a gas outlet; the liquid inlet and the air outlet are respectively communicated with the second pipeline 4; the electric heating tube 14 is used for heating water in the electric heating carbon dioxide gasifier 5, the temperature of the water is raised through the electric heating tube 14, and liquid carbon dioxide is further gasified; the platinum thermoelectric tube 15 is used for monitoring the temperature of the electrically heated carbon dioxide gasifier 5, and the generated water vapor is condensed by the overflow port 16 and then flows out of the overflow port 16.
Further, in order to prevent the gas in the prevention and control area 6 from entering the carbon dioxide gasification device through the second pipeline 4, an electromagnetic valve 11 is arranged on the second pipeline 4 between the carbon dioxide gasification device and the prevention and control area 6; the electromagnetic valve 11 is connected with the controller 8 and is used for controlling the connection or disconnection of the second pipeline 4 between the carbon dioxide gasification device and the prevention and control area 6 according to a control instruction of the controller 8.
In order to prevent the pressure inside the liquid carbon dioxide storage tank 1 from being insufficient, the automatic liquid carbon dioxide fire extinguishing system further comprises a pressure sensing device 12, wherein a sensing end of the pressure sensing device 12 is connected with the liquid carbon dioxide storage tank 1 and is used for acquiring a pressure signal of the liquid carbon dioxide storage tank 1; the output end of the pressure sensing device 12 is connected with the controller 8, and is used for transmitting the pressure signal to the controller 8;
the controller 8 is configured to compare the pressure signal with a set pressure threshold, and generate an alarm command when the pressure signal is smaller than the set pressure threshold.
In order to remind the staff of insufficient pressure in the liquid carbon dioxide storage tank 1, the automatic fire extinguishing system for liquid carbon dioxide provided by the utility model also comprises an alarm; the alarm is connected with the controller 8 and used for receiving the alarm instruction and giving an alarm according to the alarm instruction.
Furthermore, the staff can know the residual amount of the liquid carbon dioxide in the liquid carbon dioxide storage tank 1 in real time, and a liquid level meter 13 is further installed on the side wall of the liquid carbon dioxide storage tank 1.
The utility model discloses according to different temperature information carries out different control in the prevention and control area 6, it is right promptly the dangerous degree that takes place the conflagration in the prevention and control area 6 carries out the classification, according to the dangerous degree that the conflagration is different, the reasonable liquid or gaseous carbon dioxide of taking is put out a fire, has not only effectively avoided the poor problem of fire control effect because of the single liquid carbon dioxide that uses, can practice thrift carbon dioxide raw materials of putting out a fire simultaneously more.
The principle and the implementation of the present invention are explained herein by using specific examples, and the above description of the embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (9)
1. An automatic fire extinguishing system for liquid carbon dioxide, comprising:
the liquid carbon dioxide storage tank is used for storing liquid carbon dioxide;
the control valve group is arranged at a liquid discharge port of the liquid carbon dioxide storage tank;
the first pipeline and the second pipeline are connected with the control valve group and extend to a prevention and control area;
a carbon dioxide gasification device installed on the second pipeline for gasifying liquid carbon dioxide and converting the liquid carbon dioxide into gaseous carbon dioxide;
the temperature sensor is arranged in the prevention and control area and used for acquiring temperature information of the prevention and control area;
the controller is respectively connected with the control valve group and the temperature sensor and is used for comparing the temperature information with a set temperature threshold range, generating a control instruction according to a comparison result and sending the control instruction to the control valve group;
and the control valve group controls the working states of the first pipeline and the second pipeline according to the control command, wherein the working states comprise a conduction state and a closing state.
2. The automatic fire extinguishing system for liquid carbon dioxide according to claim 1, wherein the liquid carbon dioxide storage tank is a CPW-2.0 horizontal cryogenic liquid storage tank.
3. The automatic fire extinguishing system for liquid carbon dioxide as recited in claim 1, wherein the control valve set comprises a first drain valve and a second drain valve;
the first drainage valve is connected with the first pipeline and used for controlling the working state of the first pipeline according to the control instruction;
and the second liquid discharge valve is connected with the second pipeline and used for controlling the working state of the second pipeline according to the control command.
4. The automatic fire extinguishing system for liquid carbon dioxide as claimed in claim 3, wherein the control valve set further comprises a safety valve, a residual liquid discharge valve, an emptying valve, a full-measuring analysis valve and a safety switching valve.
5. The automatic fire extinguishing system for liquid carbon dioxide according to claim 1, wherein the carbon dioxide gasifying device is an electrically heated carbon dioxide gasifier.
6. The automatic fire extinguishing system for liquid carbon dioxide according to claim 1, further comprising a solenoid valve, wherein the solenoid valve is disposed on the second pipeline between the carbon dioxide gasifying device and the control area, and is connected to the controller for controlling the connection or disconnection of the second pipeline between the carbon dioxide gasifying device and the control area according to the control command of the controller.
7. The liquid carbon dioxide automatic fire extinguishing system according to claim 1, further comprising a pressure sensing device; the sensing end of the pressure sensing device is connected with the liquid carbon dioxide storage tank and is used for acquiring a pressure signal of the liquid carbon dioxide storage tank; the output end of the pressure sensing device is connected with the controller and is used for transmitting the pressure signal to the controller;
the controller is used for comparing the pressure signal with a set pressure threshold value and generating an alarm instruction when the pressure signal is smaller than the set pressure threshold value.
8. The liquid carbon dioxide automatic fire extinguishing system according to claim 7, further comprising:
and the alarm is connected with the controller and used for receiving the alarm instruction and giving an alarm according to the alarm instruction.
9. The liquid carbon dioxide automatic fire extinguishing system according to claim 1, further comprising:
and the liquid level meter is arranged on the side wall of the liquid carbon dioxide storage tank.
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| CN201921322008.4U CN211301865U (en) | 2019-08-15 | 2019-08-15 | Liquid carbon dioxide automatic fire extinguishing system |
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| CN201921322008.4U CN211301865U (en) | 2019-08-15 | 2019-08-15 | Liquid carbon dioxide automatic fire extinguishing system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110339522A (en) * | 2019-08-15 | 2019-10-18 | 西安科技大学 | A kind of liquid carbon dioxide automatic fire extinguishing system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110339522A (en) * | 2019-08-15 | 2019-10-18 | 西安科技大学 | A kind of liquid carbon dioxide automatic fire extinguishing system |
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