CN113504060A - Testing device and testing method applied to water spray fire extinguishing system of nuclear power plant - Google Patents
Testing device and testing method applied to water spray fire extinguishing system of nuclear power plant Download PDFInfo
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- CN113504060A CN113504060A CN202110590276.XA CN202110590276A CN113504060A CN 113504060 A CN113504060 A CN 113504060A CN 202110590276 A CN202110590276 A CN 202110590276A CN 113504060 A CN113504060 A CN 113504060A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 92
- 239000007921 spray Substances 0.000 title claims abstract description 72
- 238000012360 testing method Methods 0.000 title claims abstract description 50
- 230000004044 response Effects 0.000 claims abstract description 27
- 230000008859 change Effects 0.000 claims abstract description 7
- 230000009471 action Effects 0.000 claims abstract description 3
- 238000005507 spraying Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 8
- 230000001629 suppression Effects 0.000 claims description 4
- 238000010998 test method Methods 0.000 claims description 3
- 230000009466 transformation Effects 0.000 claims 2
- 230000002349 favourable effect Effects 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 6
- 239000003595 mist Substances 0.000 description 9
- 230000008569 process Effects 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001915 proofreading effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
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- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The invention relates to a testing device and a testing method thereof applied to a water spray fire extinguishing system of a nuclear power plant, wherein the testing device comprises a testing pipe, a first pressure transmitter and a second pressure transmitter which are arranged on the testing pipe, the first pressure transmitter is connected with a storage recorder, the testing pipe is connected with a pipe network of the water spray fire extinguishing system, the first pressure transmitter transmits a pressure value of the pipe network of the measured water spray fire extinguishing system to the storage recorder, and the second pressure transmitter monitors the pressure of the pipe network of the water spray fire extinguishing system; the storage recorder receives the pressure value transmitted by the first pressure transmitter, records and displays the change of the pressure of the pipe network of the water spray fire extinguishing system, forms a pressure change trend graph, and receives the action signal of the solenoid valve of the deluge valve group. The system monitors the response time, the working pressure and the pressure value after the system is stabilized in real time, ensures that all parameters of the water spray fire extinguishing system meet the requirements of specification and design, and ensures the operation safety and the economical efficiency of the whole protection area of the nuclear power plant.
Description
Technical Field
The invention relates to the field of detection of water spray fire extinguishing systems, in particular to a testing device and a testing method applied to a water spray fire extinguishing system of a nuclear power plant.
Background
The water spray fire extinguishing system comprises a pre-acting water spray fire extinguishing system and an open type water spray fire extinguishing system, and has three control modes of automatic, manual and mechanical emergency starting. When the detector of the protection area sends out a fire signal, an alarm is sent to the fire detection alarm control panel to indicate the position where the fire happens, the fire detection alarm control panel immediately sends out an opening instruction to the electromagnetic valve of the deluge valve set of the protection area on fire, the deluge valve set is opened to carry out water spraying operation on the protection area on fire, and meanwhile, the fire detection alarm control panel receives a feedback signal of the opening of the deluge alarm valve set. In the process, the time from the time when the electromagnetic valve receives the opening instruction to the time when the water spray nozzle discharges water is the response time of the system, and the pressure of the water spray nozzle gradually rises after the water spray nozzle discharges water, and finally gradually becomes stable. The pressure-time characteristic curve (shown in fig. 1) of the water mist spray head can be divided into a response section (0-A), a pressure boosting section (A-B) and a pressure stabilizing section (B-C).
Response segment (0-A): the solenoid valve of the deluge valve group receives the opening order from the fire detection warning control panel, and the process that the water spray nozzle begins to go out water is called the response section, and the time that the process used is the response time of the system, according to the standard requirement, the response time should not exceed 60 s.
Pressure boosting section (A-B): after the water mist spray head of the system discharges water, the pressure rises rapidly, the process is called as a boosting section, and the water mist spray head sprays water mist rapidly to extinguish fire in a protection area.
Pressure-stabilizing stage (B-C): the pressure gradually becomes stable after rising to a certain value, the process is called as a pressure stabilizing section, and stable water mist is formed at the spray head at the moment to continuously carry out fire extinguishing protection on the protection area.
According to the regulation in the technical Specification of Water spray fire extinguishing systems (GB50219 and 2014), the linkage test of the water spray fire extinguishing systems meets the following requirements:
(1) a simulated fire signal starting system is adopted, and corresponding subarea deluge alarm valves (or electric control valves and pneumatic control valves), pressure switches, fire-fighting water pumps and other linkage equipment can act in time and send corresponding signals;
(2) a system started by a transmission pipe is adopted to start one spray head, and the corresponding subarea deluge alarm valve, the pressure switch, the fire pump and other linkage equipment can act in time and send corresponding signals;
(3) the response time, operating pressure and flow rate of the system should meet design requirements.
Mandatory provisions in the specification require: the working pressure of the water mist spray head is not less than 0.35MPa when the water mist spray head is used for extinguishing fire; and when used for protective cooling should not be less than 0.2 MPa. The system response time is less than 60 s. Aiming at the requirement in the specification, a testing device is developed, so that parameters such as pressure, response time and the like of the system can be measured, and various parameters of the water spray system can be ensured to meet the requirement in the technical specification of the water spray fire extinguishing system (GB50219-2014) in the national standard.
Based on the fact that no special tool is used for measuring parameters such as response time of a water spraying system at present, aiming at the requirements on system response time, working pressure and flow in technical Specification for water spraying fire extinguishing systems (GB50219-2014), a test device applied to response time of the water spraying fire extinguishing system of the nuclear power plant is urgently needed to be researched and developed, the working pressure of the system can be monitored in real time, all parameters of the water spraying fire extinguishing system can be guaranteed to meet the requirements of specification and design, and the operation safety and the economy of the whole protection area of the nuclear power plant are guaranteed.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a testing device and a testing method thereof applied to a water spray fire extinguishing system of a nuclear power plant.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the testing device applied to the water spray fire extinguishing system of the nuclear power plant comprises a testing pipe, a first pressure transmitter and a second pressure transmitter, wherein the first pressure transmitter and the second pressure transmitter are installed on the testing pipe;
the storage recorder receives the pressure value transmitted by the first pressure transmitter, records and displays the response time and the pressure change of a water spray fire extinguishing system pipe network, forms a pressure change trend graph, and receives an action signal of the solenoid valve of the deluge valve group.
Furthermore, the first pressure transmitter, the second pressure transmitter and the storage recorder are all connected with a direct-current stabilized voltage power supply through standard resistors.
Furthermore, the first pressure transmitter and the second pressure transmitter are arranged at the most unfavorable points of the pipe network protection area of the main transformer and the plant transformer area.
The test method of the test device applied to the water spray fire extinguishing system of the nuclear power plant comprises the following steps:
s1, selecting a least-favorable point (the least-favorable point is the point with the minimum free water head in a fire-fighting pipe network) as a point to be tested in a pipe network protection area of a main transformer and a plant transformer area, and connecting a test pipe provided with a first pressure transmitter and a second pressure transmitter to the pipe network;
s2, connecting a first pressure transmitter to a storage recorder through a standard resistor, and feeding back a pressure value of a water spray fire extinguishing system pipe network to the storage recorder by the first pressure transmitter;
s3, simulating fire alarm signals of main transformer and plant transformer areas, sending an opening instruction to an electromagnetic valve of a deluge valve set by a fire detection alarm control panel, transmitting the opening instruction to a connected storage recorder, starting water inflow of a water spray fire extinguishing system after the electromagnetic valve acts, starting water outflow spraying by a nozzle after a period of time, gradually increasing the pressure of a pipe network in the system, enabling the pressure to tend to be stable after the pressure rises to a certain value, realizing stable spraying on a protection area, and recording the response time, the working pressure and the pressure value after the system is stable by the storage recorder;
and S4, comparing the system response time, the working pressure and the pressure value after the system is stabilized, which are recorded by the storage recorder, with the parameters required by the technical specification of the water spray fire extinguishing system, and determining whether the tested pipe network of the water spray fire extinguishing system meets the parameter requirements or not, and modifying the pipe network of the water spray fire extinguishing system which does not meet the parameter requirements.
The second pressure transmitter is used for observing the field pressure value, and the second pressure transmitter and the pressure value sent to the storage recorder by the first pressure transmitter are corrected to ensure that the measured pressure is error-free.
The invention has the beneficial effects that: the system can monitor the response time, the working pressure and the pressure value after the system is stabilized in real time, ensure that all parameters of the water spray fire extinguishing system can meet the requirements of specification and design, and ensure the operation safety and the economical efficiency of the whole protection area of the nuclear power plant.
Drawings
FIG. 1 is a graph showing pressure-time characteristics of a water mist head according to the background art of the present invention;
fig. 2 is a schematic structural diagram of the present invention.
Detailed Description
As shown in fig. 2, the testing device applied to the water spray fire extinguishing system of the nuclear power plant comprises a testing pipe 1, a first pressure transmitter 2 and a second pressure transmitter 3 which are installed on the testing pipe 1, wherein the first pressure transmitter 2 is connected with a storage recorder 4, the testing pipe 1 is connected with a water spray fire extinguishing system pipe network, the first pressure transmitter 2 transmits a pressure value of the water spray fire extinguishing system pipe network to the storage recorder 4, and the second pressure transmitter 3 monitors the pressure of the water spray fire extinguishing system pipe network in real time; the first pressure transmitter 2, the second pressure transmitter 3 and the storage recorder 4 are all connected with a direct current stabilized power supply 6 through a standard resistor 5. The second pressure transmitter 3 is used for observing the field pressure value, and forms a proofreading with the pressure value sent to the storage recorder 4 by the first pressure transmitter 2, so that the measured pressure is ensured to be error-free.
When the pressure-sensitive.
The test system comprises the following equipment types:
| device name | Model specification | Measuring range | Accuracy of measurement |
| Storage recorder | 8861-50 | / | / |
| Pressure transmitter | / | 0-25MPa | Grade 0.2 |
| Pressure transmitter | / | 0-25MPa | Grade 0.5 |
| Direct current source | 6220 | / | / |
| Standard resistance | BZ3 | 0-250Ω | Grade 0.01 |
The water spray fire suppression system parameters are as follows:
further, the test method of the test device applied to the water spray fire extinguishing system of the nuclear power plant comprises the following steps:
s1, selecting a least beneficial point (the least beneficial point is the point with the minimum free water head in a fire-fighting pipe network) as a point to be tested in a pipe network protection area of a main transformer area and a plant transformer area, detaching a spray head, connecting a testing pipe 1 provided with a first pressure transmitter 2 and a second pressure transmitter 3 to a pipe network, and connecting the detached spray head to the tail end of the testing pipe 1;
s2, connecting the first pressure transmitter 2 to a storage recorder 4 through a standard resistor 5, feeding the pressure value of the water spray fire extinguishing system pipe network back to the storage recorder 4 by the first pressure transmitter 2, and switching on a direct current stabilized voltage power supply, wherein the electromagnetic valve does not act at the moment;
s3, simulating fire alarm signals of main transformer and plant transformer areas, sending an opening instruction to an electromagnetic valve of a deluge valve set by a fire detection alarm control panel, transmitting the opening instruction to a storage recorder 4 which is connected well, starting water inflow of a water spray fire extinguishing system after the electromagnetic valve acts, starting water outflow spraying by a nozzle after a period of time, gradually increasing the pressure of a pipe network in the system, starting to stabilize the pressure after the pressure rises to a certain value, realizing stable spraying on a protection area, and recording the response time, the working pressure and the pressure value after the system is stabilized by the storage recorder;
and S4, comparing the system response time, the working pressure and the pressure value after the system is stabilized, which are recorded by the storage recorder 4, with the parameters required by the technical specification of the water spray fire extinguishing system, and determining whether the tested pipe network of the water spray fire extinguishing system meets the parameter requirements or not, and modifying the pipe network of the water spray fire extinguishing system which does not meet the parameter requirements.
According to the testing method, the main transformer and the plant transformer area of the Hualongyi unit are used as testing objects, and real spraying is carried out in the main transformer and the plant transformer protection area through simulating fire alarm signals, so that required data are measured. This test water source is by the upstream fire water production system start-up fire pump, through GB ditch to become to main transformer, the regional intaking of factory change to satisfy the test demand.
According to the method, the response time of the system is measured to be 14s according to the fact that the electromagnetic valve starts to time after acting in the test process, the water is discharged from the water spray nozzle at the point to be measured, and the data recorded by the recorder is stored, the response time is required to be less than 60s in the technical specification of the water spray fire extinguishing system (GB50219 and 2014), and the response time meets the national standard requirement.
After the system pressure is stable, the pressure value is 1.08MPa, the working pressure of the water spray nozzle is required to be not less than 0.35MPa when the system is used for fire extinguishing in the technical Specification of Water spray fire extinguishing systems (GB50219-2014), and the working pressure of the system meets the national standard requirement.
By the formula
The flow rate Q was calculated to be 157.74L/min (2.63L/s). And the flow rate of the water spray nozzle in the parameters of the water spray system is 89.8L/min (1.50L/s), so that the flow rate required by the system is met.
According to the test result of the test system, the response time and the working pressure of the test system of the test device both meet the national standard requirements, and meanwhile, the flow of the water mist spray head obtained through calculation meets the design requirements of the Hualong I unit.
The system can monitor the response time, the working pressure and the pressure value after the system is stabilized in real time, ensure that all parameters of the water spray fire extinguishing system can meet the requirements of specification and design, and ensure the operation safety and the economical efficiency of the whole protection area of the nuclear power plant.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The testing device is applied to the water spray fire extinguishing system of the nuclear power plant and is characterized by comprising a testing pipe, a first pressure transmitter and a second pressure transmitter, wherein the first pressure transmitter and the second pressure transmitter are installed on the testing pipe;
the storage recorder receives the pressure value transmitted by the first pressure transmitter, records and displays the response time and the pressure change of a water spray fire extinguishing system pipe network, forms a pressure change trend graph, and receives an action signal of the solenoid valve of the deluge valve group.
2. A test device for a nuclear power plant water spray fire suppression system as claimed in claim 1, wherein said first pressure transmitter, said second pressure transmitter and said memory recorder are connected to a regulated DC power supply through standard resistors.
3. The testing device for a nuclear power plant water spray fire suppression system of claim 1, wherein said first and second pressure transmitters are disposed at the most disadvantageous point of a network protection area of a main transformer and a plant transformer area.
4. A method for testing a test device for a nuclear power plant water spray fire suppression system according to any one of claims 1 to 3, comprising the steps of:
s1, selecting a most unfavorable point as a point to be tested in a pipe network protection area of a main plant transformation area and a plant transformation area, and connecting a test pipe provided with a first pressure transmitter and a second pressure transmitter to a pipe network;
s2, connecting a first pressure transmitter to a storage recorder through a standard resistor, and feeding back a pressure value of a water spray fire extinguishing system pipe network to the storage recorder by the first pressure transmitter;
s3, simulating fire alarm signals of main transformer and plant transformer areas, sending an opening instruction to an electromagnetic valve of a deluge valve set by a fire detection alarm control panel, transmitting the opening instruction to a connected storage recorder, starting water inflow of a water spray fire extinguishing system after the electromagnetic valve acts, starting water outflow spraying by a nozzle after a period of time, gradually increasing the pressure of a pipe network in the system, enabling the pressure to tend to be stable after the pressure rises to a certain value, realizing stable spraying on a protection area, and recording the response time, the working pressure and the pressure value after the system is stable by the storage recorder;
and S4, comparing the system response time, the working pressure and the pressure value after the system is stabilized, which are recorded by the storage recorder, with the parameters required by the technical specification of the water spray fire extinguishing system, and determining whether the tested pipe network of the water spray fire extinguishing system meets the parameter requirements or not, and modifying the pipe network of the water spray fire extinguishing system which does not meet the parameter requirements.
5. The method for testing the testing device applied to the water spray fire extinguishing system of the nuclear power plant as claimed in claim 4, wherein in the step S1, the least favorable point selected by the protection area of the fire protection pipe network is the point with the minimum free water head in the fire protection pipe network.
6. A test method for a test unit applied to a water spray fire extinguishing system in a nuclear power plant as claimed in claim 4, wherein the second pressure transmitter is used to observe the field pressure value, and is calibrated with the pressure value sent by the first pressure transmitter to the storage recorder, so as to ensure that the measured pressure is free from error.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110590276.XA CN113504060A (en) | 2021-05-28 | 2021-05-28 | Testing device and testing method applied to water spray fire extinguishing system of nuclear power plant |
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| CN202110590276.XA CN113504060A (en) | 2021-05-28 | 2021-05-28 | Testing device and testing method applied to water spray fire extinguishing system of nuclear power plant |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104269082A (en) * | 2014-10-11 | 2015-01-07 | 重庆房地产职业学院 | Practical training device of fire-fighting spraying system |
| CN107146645A (en) * | 2017-06-23 | 2017-09-08 | 西安交通大学 | A kind of npp safety shell spray system sprays performance test apparatus |
| CN107272566A (en) * | 2017-08-04 | 2017-10-20 | 哈尔滨哈飞工业有限责任公司 | A kind of aircraft salt fog test platform intelligence control system |
| CN108568047A (en) * | 2018-06-26 | 2018-09-25 | 广东电网有限责任公司 | A kind of water spray extinguishing deluge valve pilot system |
| CN111603711A (en) * | 2020-05-09 | 2020-09-01 | 盐城工学院 | Spraying delay testing device and method for spark detection extinguishing system |
-
2021
- 2021-05-28 CN CN202110590276.XA patent/CN113504060A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104269082A (en) * | 2014-10-11 | 2015-01-07 | 重庆房地产职业学院 | Practical training device of fire-fighting spraying system |
| CN107146645A (en) * | 2017-06-23 | 2017-09-08 | 西安交通大学 | A kind of npp safety shell spray system sprays performance test apparatus |
| CN107272566A (en) * | 2017-08-04 | 2017-10-20 | 哈尔滨哈飞工业有限责任公司 | A kind of aircraft salt fog test platform intelligence control system |
| CN108568047A (en) * | 2018-06-26 | 2018-09-25 | 广东电网有限责任公司 | A kind of water spray extinguishing deluge valve pilot system |
| CN111603711A (en) * | 2020-05-09 | 2020-09-01 | 盐城工学院 | Spraying delay testing device and method for spark detection extinguishing system |
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