CN109364417B - Carbon dioxide fire extinguishing system injection integrity test method and test system - Google Patents
Carbon dioxide fire extinguishing system injection integrity test method and test system Download PDFInfo
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- CN109364417B CN109364417B CN201811433355.4A CN201811433355A CN109364417B CN 109364417 B CN109364417 B CN 109364417B CN 201811433355 A CN201811433355 A CN 201811433355A CN 109364417 B CN109364417 B CN 109364417B
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/50—Testing or indicating devices for determining the state of readiness of the equipment
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Abstract
The invention discloses a method and a device for testing the injection integrity of a carbon dioxide fire extinguishing system, wherein a low-pressure carbon dioxide fire extinguishing agent storage device is firstly arranged on a weighing device, real-time weight data of the weighing device and real-time pressure data in the storage device are uploaded to a data acquisition recorder, the injection time of the storage device is set, and the initial state of each component in the carbon dioxide fire extinguishing system is recorded; then, starting a carbon dioxide fire extinguishing system through a control device and spraying for a certain time, and after spraying is finished, recording numerical value differences on a weighing device before and after spraying through a data acquisition recorder to determine the spraying quantity of a storage device; finally, when the injection quantity reaches the maximum injection flow rate of the system, the state conditions of all the components of the system after the injection of the maximum injection flow rate are checked step by step to be consistent with the initial state. According to the invention, through the injection integrity test of the carbon dioxide fire extinguishing system, whether each part can meet the requirements of actual working conditions can be timely found, and data of a perfect product is provided for design.
Description
Technical Field
The invention belongs to the technical field of fire-fighting equipment testing, and particularly relates to a method and a system for testing jet integrity of a carbon dioxide fire-extinguishing system.
Background
Along with the development of the economy in China, the fire-fighting awareness of people is continuously enhanced, and the application of the fire-fighting device in the industry is also continuously increased. Carbon dioxide fire suppression systems are the most widely used fire suppression systems that should be subjected to maximum flow injection testing to determine the ability of the components of the system to withstand the reaction forces of the injection process without damage.
At present, a common theoretical calculation mode is generally adopted to confirm the bearing grade of each component of the carbon dioxide fire extinguishing system so as to meet the requirement of the bearing grade, namely, confirm that the injection integrity of the carbon dioxide fire extinguishing system meets the requirement. The theoretical calculation mode is too limited, and various external factors and the processing technology of enterprises in the actual injection process are not considered.
Disclosure of Invention
The invention aims at: aiming at the problems, the carbon dioxide fire extinguishing system injection integrity test method and system capable of timely finding whether each part can meet the requirements of actual working conditions and providing perfect product data for design are provided.
The technical scheme of the invention is realized as follows: a method for testing jet integrity of a carbon dioxide fire extinguishing system is characterized by comprising the following steps of:
firstly, fixedly mounting a low-pressure carbon dioxide fire extinguishing agent storage device on a weighing device, uploading real-time weight data of the weighing device and real-time pressure data in the low-pressure carbon dioxide fire extinguishing agent storage device to a data acquisition recorder, setting the spraying time of the low-pressure carbon dioxide fire extinguishing agent storage device, and recording the initial state of each part in a carbon dioxide fire extinguishing system;
then, starting a carbon dioxide fire extinguishing system through a control device and spraying for a certain time, and after spraying is finished, recording numerical value differences on a weighing device before spraying and after spraying through a data acquisition recorder to determine the spraying quantity of a low-pressure carbon dioxide fire extinguishing agent storage device;
finally, when the injection quantity reaches the maximum injection flow rate of the system, the state conditions of all the components of the system after the injection of the maximum injection flow rate are checked step by step to be consistent with the initial state.
Before the carbon dioxide fire extinguishing system is started, a pipeline connected with a low-pressure carbon dioxide fire extinguishing agent storage device is connected with an air source, other outlets are closed through plugs, the pressure is slowly increased to a specified value, pressure is released after no pressure drop is observed for a period of time, and the pipeline is purged.
According to the method for testing the jet integrity of the carbon dioxide fire extinguishing system, the pressure of the carbon dioxide fire extinguishing agent in the low-pressure carbon dioxide fire extinguishing agent storage device is ensured to be the maximum working pressure during the test.
According to the carbon dioxide fire extinguishing system injection integrity test method, if the injection quantity is smaller than the maximum injection flow of the system, parameters of a spray head, a pipeline and a pipe fitting are adjusted until the maximum injection flow of the system is met, the state conditions of all parts are recorded again after each part is adjusted, and each part condition is checked and compared with the state before injection after each part is injected.
A carbon dioxide fire suppression system jet integrity test system, characterized by: the low-pressure carbon dioxide fire extinguishing agent storage device is arranged on the weighing device, the control device is connected with the low-pressure carbon dioxide fire extinguishing agent storage device and used for controlling the opening or closing of the spraying of the low-pressure carbon dioxide fire extinguishing agent storage device, the data acquisition recorder is respectively connected with the weighing device and the low-pressure carbon dioxide fire extinguishing agent storage device and used for acquiring and recording real-time weight data of the weighing device and real-time pressure data in the low-pressure carbon dioxide fire extinguishing agent storage device, during testing, the outlet end of the low-pressure carbon dioxide fire extinguishing agent storage device is connected with a nozzle through a pipeline assembly, and a control valve assembly is arranged on the pipeline assembly and is fixed through a bracket.
The invention discloses a carbon dioxide fire extinguishing system injection integrity test system, wherein a control valve assembly comprises a main control valve and a selection valve, the main control valve and the selection valve are respectively fixed with corresponding brackets, the outlet end of a low-pressure carbon dioxide fire extinguishing agent storage device is connected with the main control valve through a metal hose, the main control valve is connected with the selection valve through a pipeline, the selection valve is connected with a nozzle through a pipeline, and a signal feedback device is arranged on the pipeline.
According to the invention, the low-pressure carbon dioxide fire extinguishing agent storage device is arranged on the weighing device, and the maximum jet flow of the system is determined by utilizing the numerical value difference on the weighing device before and after the spraying, so that the condition of checking the state of each part of the system after the spraying under the condition of the maximum jet flow is ensured, and the bearing grade of each part of the carbon dioxide fire extinguishing system is confirmed, namely the jet integrity of the carbon dioxide fire extinguishing system is determined to meet the requirement.
Drawings
Fig. 1 is a schematic structural view of the present invention.
The marks in the figure: 1 is a weighing device, 2 is a data acquisition recorder, 3 is a low-pressure carbon dioxide fire extinguishing agent storage device, 4 is a control device, 5 is a nozzle, 6 is a bracket, 7 is a main control valve, 8 is a selection valve, 9 is a metal hose, 10 is a pipeline, and 11 is a signal feedback device.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present technology will be described in further detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1, a carbon dioxide fire extinguishing system sprays integrality test system, including weighing device 1, data acquisition record appearance 2, low pressure carbon dioxide fire extinguishing agent storage device 3 and controlling means 4, low pressure carbon dioxide fire extinguishing agent storage device 3 is placed on weighing device 1, controlling means 4 is connected with low pressure carbon dioxide fire extinguishing agent storage device 3 for control low pressure carbon dioxide fire extinguishing agent storage device 3 is spouted and is opened or closed, data acquisition record appearance 2 is connected with weighing device 1 and low pressure carbon dioxide fire extinguishing agent storage device 3 respectively, is used for gathering and recording weighing device real-time weight data and the real-time pressure data in the low pressure carbon dioxide fire extinguishing agent storage device, during the test, the exit end of low pressure carbon dioxide fire extinguishing agent storage device 3 is connected with nozzle 5 through the pipeline subassembly be provided with the control valve subassembly on the pipeline subassembly, pipeline subassembly and control valve subassembly are fixed through support 6.
In this embodiment, the data acquisition recorder 2 is a paperless recorder, the control valve assembly includes a master control valve 7 and a selection valve 8, the master control valve 7 and the selection valve 8 are respectively and fixedly connected with the corresponding bracket 6, the outlet end of the low-pressure carbon dioxide fire extinguishing agent storage device 3 is connected with the master control valve 7 through a metal hose 9, the master control valve 7 is connected with the selection valve 8 through a pipeline, the selection valve 8 is connected with the nozzle 5 through a pipeline 10, and a signal feedback device 11 is arranged on the pipeline 10. Namely, the structure behind the outlet end of the low-pressure carbon dioxide fire extinguishing agent storage device is a tested part, and the specific connection structure of the tested part is completely consistent with the on-site installation structure of the tested part.
The method for testing the jet integrity of the carbon dioxide fire extinguishing system specifically comprises the following steps:
firstly, fixedly mounting a low-pressure carbon dioxide fire extinguishing agent storage device on a weighing device, determining the specifications and the types of parts such as pipelines, nozzles and the like according to calculation, assembling the parts according to the system requirements according to the structure shown in fig. 1, and defining the parts firmly; connecting a pipeline connected with the low-pressure carbon dioxide fire extinguishing agent storage device with an air source, closing other outlets through plugs, slowly pressurizing to a specified value, observing for a period of time, and then decompressing after no pressure drop, so as to ensure the tightness of the pipeline, purging the pipeline and ensuring that no impurity exists in the pipeline; uploading real-time weight data of the weighing device and real-time pressure data in the low-pressure carbon dioxide fire extinguishing agent storage device to a data acquisition recorder, setting the spraying time of the low-pressure carbon dioxide fire extinguishing agent storage device, such as spraying time of 1 minute, and recording the initial state of each component in the carbon dioxide fire extinguishing system.
In addition, the carbon dioxide fire extinguishing agent pressure in the low-pressure carbon dioxide fire extinguishing agent storage device is ensured to be the maximum working pressure during testing, and in the embodiment, the carbon dioxide fire extinguishing agent pressure in the low-pressure carbon dioxide fire extinguishing agent storage device is 2.1MPa.
Then, the low-pressure carbon dioxide fire extinguishing agent storage device is started through the control device, the main control valve and the selection valve are opened, the carbon dioxide fire extinguishing agent sprays carbon dioxide through the main control valve, the selection valve, the pipeline, the pipe fitting and the nozzle, and the spraying time is 1 minute, and the selection valve and the main control valve are closed.
After the spraying is finished, delaying for 5 minutes, recording numerical value differences on a weighing device before spraying and after spraying through a data acquisition recorder, and determining the spraying quantity of the low-pressure carbon dioxide extinguishing agent storage device; if the injection quantity is less than the maximum injection flow of the system, parameters of the spray head, the pipeline and the pipe fitting should be adjusted until the maximum injection flow of the system is met, the state conditions of all parts should be recorded again after each part is adjusted, and each part condition should be checked and compared with the state before the injection.
Finally, when the injection quantity reaches the maximum injection flow rate of the system, the state conditions of all the components of the system after the injection of the maximum injection flow rate are checked step by step to be consistent with the initial state.
Through the carbon dioxide fire extinguishing system injection integrity test, whether each part can meet the requirement of actual working conditions or not can be timely found, and data of perfect products are provided for design.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (4)
1. A method for testing jet integrity of a carbon dioxide fire extinguishing system is characterized by comprising the following steps of:
firstly, fixedly mounting a low-pressure carbon dioxide fire extinguishing agent storage device on a weighing device, uploading real-time weight data of the weighing device and real-time pressure data in the low-pressure carbon dioxide fire extinguishing agent storage device to a data acquisition recorder, setting the spraying time of the low-pressure carbon dioxide fire extinguishing agent storage device, and recording the initial state of each part in a carbon dioxide fire extinguishing system;
then, starting a carbon dioxide fire extinguishing system through a control device and spraying for a certain time, and after spraying is finished, recording numerical value differences on a weighing device before spraying and after spraying through a data acquisition recorder to determine the spraying quantity of a low-pressure carbon dioxide fire extinguishing agent storage device;
finally, when the injection quantity reaches the maximum injection flow rate of the system, the state conditions of all the components of the system after the injection of the maximum injection flow rate are checked step by step to be consistent with the initial state.
2. The method for testing jet integrity of a carbon dioxide fire suppression system of claim 1, wherein: before starting the carbon dioxide fire extinguishing system, connecting a pipeline connected with the low-pressure carbon dioxide fire extinguishing agent storage device with an air source, closing other outlets through plugs, slowly pressurizing to a specified value, observing for a period of time, decompressing after no pressure drop, and purging the pipeline.
3. The method for testing jet integrity of a carbon dioxide fire suppression system of claim 1, wherein: the carbon dioxide fire extinguishing agent pressure in the low-pressure carbon dioxide fire extinguishing agent storage device is ensured to be the maximum working pressure during the test.
4. The method for testing jet integrity of a carbon dioxide fire suppression system of claim 1, wherein: if the injection quantity is less than the maximum injection flow of the system, parameters of the spray head, the pipeline and the pipe fitting should be adjusted until the maximum injection flow of the system is met, the state conditions of all parts should be recorded again after each part is adjusted, and each part condition should be checked and compared with the state before the injection.
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| CN109900508A (en) * | 2019-03-18 | 2019-06-18 | 应急管理部上海消防研究所 | Detect the device and method of the dry powder fire-engine injection effective spraying rate of powder fire monitor |
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| WO2006131938A1 (en) * | 2005-06-06 | 2006-12-14 | Centro Sill. S.A.S. Di Zanin Milena & C. | Device for the testing and the periodical inspection of pipes and fire-prevention equipments connected to water supplies |
| CN102305710A (en) * | 2011-08-18 | 2012-01-04 | 公安部天津消防研究所 | Test device for measuring spray characteristic of local application nozzle of carbon dioxide fire-extinguishing system |
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