CN213746153U - Nuclear power station fire water quality optimization device and system - Google Patents
Nuclear power station fire water quality optimization device and system Download PDFInfo
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- CN213746153U CN213746153U CN202021217155.8U CN202021217155U CN213746153U CN 213746153 U CN213746153 U CN 213746153U CN 202021217155 U CN202021217155 U CN 202021217155U CN 213746153 U CN213746153 U CN 213746153U
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Abstract
The utility model belongs to the technical field of nuclear power station fire-fighting water system operation, and particularly discloses a nuclear power station fire-fighting water quality optimization device and system, wherein the device comprises a device isolation valve, a device electric water change valve and a quick coupling which are arranged between fire-fighting isolation valves on a main looped network pipeline; the system comprises a fire pump, a main looped network pipeline communicated with the fire pump and a fire-fighting isolation valve arranged on the pipeline. The utility model discloses when can guarantee the fire water function of putting out a fire, improve quality of water in the pipeline, reduce fire valve jam and leak, pipeline corruption trouble such as perforate, avoid the shower nozzle of putting out a fire to be blockked up, guarantee that fire water system is effective available, safe and reliable.
Description
Technical Field
The utility model belongs to the technical field of the operation of nuclear power station fire water system, concretely relates to nuclear power station fire water quality of water optimizes device, system.
Background
A closed ring network system of a carbon steel pipeline of a fire fighting water system of a pressurized water reactor nuclear power station is full of water for pressure stabilization standby in an original design pipeline, provides fire fighting water with certain flow and pressure for a water spray fire extinguishing system of a nuclear power plant and an indoor (outdoor) fire hydrant system, and is used for fire fighting during fire.
The system is always in the states of water filling, standing and pressure stabilization standby, the conditions of blackening and stink of water in the pipeline, incapability of discharging corrosion products in the pipeline and corrosion perforation of the pipeline occur after the system is put into operation for a long time, the defects of valve jam and water leakage are increased year by year, and a water quality optimization device of a fire-fighting water pipe network is not arranged. If the execution system of the important fire-fighting function in the operation process of the nuclear power plant of the fire-fighting water system can not complete the design function, a great fire-fighting potential safety hazard is formed for the unit. If the pipeline is emptied and refilled with water, the period is long, the number of isolated equipment is large, and corrosive substances in the pipeline cannot be completely discharged, so that the usability of a fire-fighting system is influenced, and the economic loss and the workload of personnel caused by equipment damage are increased.
Disclosure of Invention
An object of the utility model is to provide a device, system and method that fire water quality of water optimizes, under the available prerequisite of guaranteeing the fire water function of putting out a fire, carry out the fire control water pipe network and wash and trade water, when improving quality of water in the pipeline, reach the defect that reduces fire control equipment trouble such as fire valve bite and leak, pipeline corruption perforation, avoid the shower nozzle of putting out a fire to be blockked up, guarantee that fire water system is effective available, safe and reliable purpose.
Realize the utility model discloses the technical scheme of purpose: the utility model provides a nuclear power station fire water quality of water optimizing device, the device is including installing device isolation valve A between fire control isolation valve B and the fire control isolation valve O on nuclear power station fire water system main ring network pipeline, install electronic water change valve, device isolation valve B and quick-operation joint, device isolation valve A's one end and fire control isolation valve B, fire control isolation valve O all communicates, device isolation valve A's the other end and the one end intercommunication of device electronic water change valve, device electronic water change valve's the other end and the one end intercommunication of device isolation valve B, device isolation valve B's the other end and quick-operation joint's one end intercommunication.
And a device exhaust valve is arranged between the electric water change valve of the device and the device isolation valve B.
The electric water change valve of the device is further communicated with a fire alarm.
The utility model provides a nuclear power station fire water system, this system include the fire pump, with the main looped netowrk pipeline of fire pump export intercommunication to and fire control isolation valve A, fire control isolation valve B and fire control isolation valve O of setting on main looped netowrk pipeline, be equipped with the sub-fire control looped netowrk of a plurality of series connection between fire control isolation valve A and the fire control isolation valve B, nuclear power station fire water quality of water optimizing device is located between isolation valve O and the fire control isolation valve B.
The fire pump include fire pump A, fire pump B, fire pump A, fire pump B's export all communicate with fire control isolation valve A, fire control isolation valve B's one end.
The entrance and the exit of each sub-fire-fighting looped network are respectively provided with a fire-fighting isolation valve, each sub-fire-fighting looped network is composed of two fire-fighting isolation valves connected in parallel and a fire-fighting looped network, and the entrance and the exit of the two fire-fighting isolation valves connected in parallel are respectively communicated with one end of the adjacent sub-fire-fighting looped network.
The first sub-firefighting ring network consists of a firefighting isolation valve D, a firefighting isolation valve F and a firefighting ring network A which are connected in parallel, wherein the inlets of the firefighting isolation valve D and the firefighting isolation valve F which are connected in parallel are respectively communicated with the inlet of the firefighting ring network A and one end of a firefighting isolation valve C, and the outlets of the firefighting isolation valve D and the firefighting isolation valve F which are connected in parallel are respectively communicated with the outlet of the firefighting ring network A and one end of a firefighting isolation valve E; the other end of the fire-fighting isolation valve C is communicated with the other end of the fire-fighting isolation valve A, and the other end of the fire-fighting isolation valve E is communicated with one end of the second sub fire-fighting looped network.
The second sub-fire-fighting looped network consists of a fire-fighting isolation valve H, a fire-fighting isolation valve J and a fire-fighting looped network B which are connected in parallel, wherein the inlets of the fire-fighting isolation valve H and the fire-fighting isolation valve J which are connected in parallel are respectively communicated with the inlet of the fire-fighting looped network B and one end of the fire-fighting isolation valve G, and the outlets of the fire-fighting isolation valve H and the fire-fighting isolation valve J which are connected in parallel are respectively communicated with the outlet of the fire-fighting looped network B and one end of the fire-fighting isolation valve I; the other end of the fire-fighting isolation valve G is communicated with the other end of the fire-fighting isolation valve E, and the other end of the fire-fighting isolation valve I is communicated with one end of the third sub fire-fighting looped network.
The third sub-firefighting ring network consists of a firefighting isolation valve L, a firefighting isolation valve N and a firefighting ring network C which are connected in parallel, wherein the inlets of the firefighting isolation valve L and the firefighting isolation valve N which are connected in parallel are respectively communicated with the inlet of the firefighting ring network C and one end of a firefighting isolation valve K, and the outlets of the firefighting isolation valve L and the firefighting isolation valve N which are connected in parallel are respectively communicated with the outlet of the firefighting ring network C and one end of a firefighting isolation valve M; the other end of the fire-fighting isolation valve K is communicated with the other end of the fire-fighting isolation valve I, and the other end of the fire-fighting isolation valve M is communicated with one end of the rest other fire-fighting looped networks.
And the other ends of the rest other fire-fighting looped networks are communicated with one end of a fire-fighting isolation valve O.
And a pipeline between the other end of the fire-fighting isolation valve O and the fire-fighting isolation valve B is communicated with one end of an isolation valve A of the fire-fighting water quality optimization device of the nuclear power station.
The utility model has the advantages of:
(1) the utility model relates to a nuclear power station fire-fighting water quality of water optimization device, system can realize carrying out water quality optimization to closed, annular pipe network fire-fighting water system, and the successful solution quality of water in the pipeline blackens, smelly problem behind the long-term operation.
(2) The utility model relates to a nuclear power station fire water quality of water optimization device, system through optimizing to the fire water quality of water in the fire control pipe network, can effectively reduce the pipeline and corrode the perforation number of times, and effective less pipeline valve leaks, the defect number of times of jam, can effectively avoid water spray fire extinguishing nozzle to block up to effectively alleviate the fire-fighting equipment fault rate that leads to because of quality of water worsens.
(3) The utility model relates to a nuclear power station fire-fighting water quality of water optimization device, system provide a dedicated water changing pipe way device of fire-fighting water pipeline pipe network, can realize discharging the dirty water in the looped netowrk through this device.
(4) The utility model relates to a nuclear power station fire water quality of water optimization device, system provide a fire water system pipeline of need not keeping apart drainage and trade the water method, can switch over the valve according to the precedence, optimize pipeline quality of water to do not influence this regional fire control function of putting out a fire.
(5) The utility model relates to a nuclear power station fire water quality of water optimization device, system provide a method of turn-off fast according to production needs trades the water valve, can be according to arbitrary fire alarm signal, will trade the motorised valve on the fire water quality of water optimization device fast and close, guarantee the fire control discharge and the pressure that the regional fire extinguishing of conflagration needs.
(6) The utility model relates to a nuclear power station fire-fighting water quality of water optimization device, system provide a whole set of operation method flow, operate according to this flow and can accomplish the water changing of fire-fighting water pipe network fire-fighting water, have reached the purpose that quality of water optimizes.
(7) The utility model relates to a nuclear power station fire water quality of water optimization device, system provide a fire water quality of water optimizes qualified judgement standard, provides the judgement foundation for the degree that each looped netowrk quality of water was optimized.
(8) The utility model relates to a nuclear power station fire water quality of water optimization device, system provide a period that fire water quality of water is optimized, can effectively maintain the long-term effect that quality of water is optimized according to this period.
Drawings
Fig. 1 is the utility model provides a nuclear power station fire water quality of water optimizing apparatus, nuclear power station fire extinguishing system's schematic diagram.
In the figure: 1-a fire pump a; 2-a fire pump B; 3-a fire-fighting isolation valve A; 4-fire isolation valve B; 5-fire isolation valve C; 6-fire isolation valve D; 7-fire isolation valve E; 8-fire isolation valve F; 9-fire isolation valve G; 10-fire isolation valve H; 11-fire isolation valve I; 12-fire isolation valve J; 13-fire isolation valve K; 14-a fire isolation valve L; 15-fire isolation valve M; 16-fire isolation valve N; 17-fire isolation valve O; 18-device isolation valve a; 19-device electric water change valve; 20-device isolation valve B; 21-device exhaust valve; 22-a quick coupling; 23-fire fighting looped network A; 24-fire-fighting looped network B; 25-fire-fighting looped network C; 26-remaining other fire-fighting looped networks; 27-fire alarm.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 1, the water quality optimization device for fire-fighting water in a nuclear power plant of the embodiment is arranged between a fire-fighting isolation valve B4 and an isolation valve O17 on a main ring network pipeline of a fire-fighting system in the nuclear power plant, the water quality optimization device for the fire fighting water of the nuclear power station comprises a device isolation valve A18, a device isolation valve B20, a device electric water changing valve 19, a device exhaust valve 21, a quick connector 22 and a pipeline connected with the quick connector, wherein one end of the device isolation valve A18 is communicated with the pipeline between the fire fighting isolation valve B4 and the fire fighting isolation valve O17 through the pipeline, the other end of the device isolation valve A18 is communicated with one end of the device electric water changing valve 19 through the pipeline, the other end of the device electric water changing valve 19 is respectively communicated with one end of a device isolation valve B20 and one end of the device exhaust valve 21 through the pipeline, the other end of the device isolation valve B20 is communicated with one end of the quick connector 22, and a fire alarm signal end of a fire alarm 27 in a plant of the nuclear power station is interlocked with a switch signal control end of the device electric water changing valve 19. As shown in fig. 1, the nuclear power plant fire water system includes a fire pump a1, a fire pump B2, a fire isolation valve A3, a fire isolation valve B4, a fire isolation valve C5, a fire isolation valve D6, a fire isolation valve E7, a fire isolation valve F8, a fire isolation valve G9, a fire isolation valve H10, a fire isolation valve I11, a fire isolation valve J12, a fire isolation valve K13, a fire isolation valve L14, a fire isolation valve M15, a fire isolation valve N16, a fire isolation valve O17, a fire ring network a23, a fire ring network B24, a fire ring network C25, and the rest fire ring networks 26. The outlet of the fire pump A1 and the outlet of the fire pump B2 are communicated with one end of a fire isolation valve A3 and one end of a fire isolation valve B4 through pipelines. The other end of the fire-fighting isolation valve A3 is communicated with one end of a fire-fighting isolation valve C5 through a pipeline, and the other end of the fire-fighting isolation valve C5 is respectively communicated with one end of a fire-fighting isolation valve D6 and one end of a fire-fighting isolation valve F8 on a fire-fighting looped network A23 through pipelines; the fire protection isolation valve D6 is connected in parallel with the fire protection isolation valve F8, and the parallel outlets of the fire protection isolation valve D6 and the fire protection isolation valve F8 are communicated with one end of a fire protection isolation valve E7 through a pipeline. The other end of the fire-fighting isolation valve E7 is communicated with one end of a fire-fighting isolation valve G9 through a pipeline, and the other end of the fire-fighting isolation valve G9 is respectively communicated with one end of a fire-fighting isolation valve H10 and one end of a fire-fighting isolation valve J12 on a fire-fighting looped network B24 through pipelines; fire isolation valve H10 is connected in parallel with fire isolation valve J12, and the parallel outlet pipeline of the two valves is communicated with fire isolation valve I11. The other end of the fire-fighting isolation valve I11 is communicated with one end of a fire-fighting isolation valve K13 through a pipeline, the other end of the fire-fighting isolation valve K13 is communicated with one end of a fire-fighting isolation valve L14 and one end of a fire-fighting isolation valve N16 on a fire-fighting looped network C25 through pipelines respectively, the fire-fighting isolation valve L14 is connected with the fire-fighting isolation valve N16 in parallel, outlet pipelines connected with the fire-fighting isolation valve M15 in parallel are communicated with one end of the fire-fighting isolation valve M15, the other end of the fire-fighting isolation valve M15 is communicated with one end of the rest other fire-fighting looped networks 26 through pipelines, the other end of the rest other fire-fighting looped networks 26 is communicated with one end of the fire-fighting isolation valve O17 through a pipeline, and the other end of the fire-fighting isolation valve O17 is communicated with the other end of the fire-fighting isolation valve B4 through a pipeline.
As shown in fig. 1, the utility model provides a water quality optimization method for fire-fighting water in nuclear power station, which comprises the following steps:
step (1) starting a fire pump to build pressure on a fire fighting and water proof pipeline main ring network
Step (1.1) opening a fire-fighting isolation valve on the fire-fighting annular pipe and starting a fire pump
Opening a fire-fighting isolation valve A3, a fire-fighting isolation valve B4, a fire-fighting isolation valve C5, a fire-fighting isolation valve D6, a fire-fighting isolation valve E7, a fire-fighting isolation valve F8, a fire-fighting isolation valve G9, a fire-fighting isolation valve H10, a fire-fighting isolation valve I11, a fire-fighting isolation valve J12, a fire-fighting isolation valve K13, a fire-fighting isolation valve F14, a fire-fighting isolation valve F15, a fire-fighting isolation valve F16 and a fire-fighting isolation valve O17 of a fire-fighting water system of the nuclear power plant, closing a device isolation valve A18, a device electric water changing valve 19, a device isolation valve B20 and a device exhaust valve 21 of the water quality optimization device, and connecting the quick connector 22 with a fire hose; and starting a fire pump A1 or a fire pump B2 of a fire water system of the nuclear power station.
Step (1.2) pressure is established on the general ring network of the fire and water fighting pipeline
The fire pump A1 or the fire pump B2 inflates the fire-fighting and water-proof pipeline main loop network, so that the pressure value of the fire-fighting pipeline main loop network is larger than or equal to 1.3 MPa. The pressure value of the fire fighting water pipeline main ring network is measured by a pressure gauge. The pressure value of the fire fighting water pipeline looped network is preferably 1.3 MPa.
Step (2) flushing water into the fire-fighting water pipeline main ring network, controlling the water flow rate in the fire-fighting water pipeline main ring network and flushing the fire-fighting water pipeline main ring network
Step (2.1) the fire-fighting water system fills water into the pipeline of the water quality optimization device, when the gas in the pipeline is discharged and the water outlet is stable, the pipeline of the water quality optimization device is stopped to exhaust, and the general ring network of the fire-fighting water system is flushed
Closing a fire-fighting isolation valve B4 of a nuclear power station fire-fighting water system, opening a device isolation valve A18 and a device electric water change valve 19 of the water quality optimization device, and enabling water in a fire-fighting water pipeline main ring network to flow into a pipeline of the water quality optimization device through the isolation valve A18 and the device electric water change valve 19 to realize water filling of the pipeline of the water quality optimization device; and slightly opening the exhaust valve 21 of the device, and closing the exhaust valve 21 of the device to stop exhausting in the pipeline of the water quality optimization device after the exhaust valve 21 detects that the pipeline gas of the water quality optimization device is exhausted and the water is stable.
Step (2.2) water is filled into the pipeline of the water quality optimization device through the quick connector 22, and when the water discharge amount in the pipeline of the water quality optimization device and the flow rate of the fire water pipeline main ring network reach preset values, the main ring network of the fire water system is flushed
Slowly opening a device isolation valve B20 of the water quality optimization device, enabling water in the fire hose to flow into a pipeline of the water quality optimization device through the quick connector 22, and measuring by the ultrasonic flowmeter to obtain that the drainage flow in the pipeline of the water quality optimization device is more than or equal to 250m3H, closing the device isolation valve B20 while simultaneously, ultrasonically flowingAnd when the flow velocity of the fire fighting water pipeline main ring network is measured by the meter to be less than or equal to 2.5m/s, the fire fighting water pipeline main ring network is flushed for more than 30 min.
For example, when the drainage flow rate in the pipeline of the water quality optimization device is preferably up to 250m3At the time of/h, the flow rate of the total looped network of the fire-fighting water pipeline preferably reaches 2.5m/s, and the time for flushing the total looped network of the fire-fighting water system preferably reaches 30 min. For example, when the drainage flow rate in the pipeline of the water quality optimization device is preferably up to 300m3And at the time of/h, the flow speed of the main loop network of the fire water pipeline preferably reaches 2m/s, and the time for flushing the main loop network of the fire water system preferably reaches 40 min. For example, when the drainage flow rate in the pipeline of the water quality optimization device is preferably up to 350m3At the time of/h, the flow rate of the total looped network of the fire-fighting water pipeline preferably reaches 1.5m/s, and the time for flushing the total looped network of the fire-fighting water system preferably is 50 min. And (3) flushing the corresponding fire-fighting looped networks in sequence by controlling the opening of the corresponding fire-fighting isolation valves until the water quality in all the fire-fighting looped networks is qualified, and finishing flushing the fire-fighting looped networks
And (3.1) flushing the fire-fighting looped network A23 by controlling the opening degrees of the fire-fighting isolation valve F8 and the fire-fighting isolation valve D6 until the water quality in the decontamination anti-theft looped network A23 is detected to be qualified.
Closing the fire-fighting isolation valve F8, measuring the flow rate of a water changing pipeline of a fire-fighting water system by an ultrasonic flowmeter to be slightly more than 1m/s, controlling the opening degree of the fire-fighting isolation valve D6, and flushing the fire-fighting looped network A23 for more than or equal to 5 min; opening the fire-fighting isolation valve F8 to continuously flush the fire-fighting looped network A23 for more than or equal to 2 min; sampling the water quality of the fire-fighting looped network A23, judging that the fire-fighting looped network A23 is qualified after the water quality is clear visually and the light transmittance is more than 90%, and starting flushing the fire-fighting looped network B24.
For example, when the water change line flow is preferably 1.01 m/s; when the fire-fighting isolation valve F8 is closed, the preferred flushing time for flushing the fire-fighting looped network A23 is 5 min; when the fire isolation valve F8 is opened, the preferred flushing time for flushing the fire fighting looped network A23 is 2 min. For example, when the water change line flow is preferably 1.02 m/s; when the fire-fighting isolation valve F8 is closed, the preferred flushing time for flushing the fire-fighting looped network A23 is 8 min; when the fire isolation valve F8 is opened, the preferred flushing time for flushing the fire fighting looped network A23 is 3 min. For example, when the water change line flow is preferably 1.03 m/s; when the fire-fighting isolation valve F8 is closed, the preferred flushing time for flushing the fire-fighting looped network A23 is 10 min; the preferred flush time for flushing the fire fighting looped network a23 is 4min when the fire isolation valve F8 is opened.
And (3.2) flushing the fire-fighting looped network B24 by controlling the opening degrees of the fire-fighting isolation valve G12 and the fire-fighting isolation valve H10 until the water quality in the fire-fighting looped network B24 is detected to be qualified
Recovering the fire-fighting isolation valve D6 to be in a full-open state, closing the fire-fighting isolation valve G12, measuring the flow rate of a water changing pipeline of a fire-fighting water system by an ultrasonic flowmeter to be slightly more than 1m/s, controlling the opening of the fire-fighting isolation valve H10, and flushing the fire-fighting looped network B24 for more than or equal to 5 min; opening the fire-fighting isolation valve G12 for flushing the fire-fighting looped network B24 for more than or equal to 2 min; sampling the water quality of the fire-fighting looped network B24, judging that the flushing of the fire-fighting looped network B24 is qualified after the water quality is clear visually and the light transmittance is more than 90%, restoring the isolation valve H10 to be in a fully opened state, and starting flushing of the fire-fighting looped network C25.
For example, when the water change line flow is preferably 1.01 m/s; when the fire-fighting isolation valve H10 is closed, the preferred flushing time for flushing the fire-fighting looped network B24 is 5 min; when the fire isolation valve H10 is opened, the preferred flushing time for flushing the fire-fighting looped network B24 is 2 min. For example, when the water change line flow is preferably 1.02 m/s; when the fire-fighting isolation valve H10 is closed, the preferred flushing time for flushing the fire-fighting looped network B24 is 8 min; when the fire isolation valve H10 is opened, the preferred flushing time for flushing the fire-fighting looped network B24 is 3 min. For example, when the water change line flow is preferably 1.03 m/s; when the fire-fighting isolation valve H10 is closed, the preferred flushing time for flushing the fire-fighting looped network B24 is 10 min; when the fire isolation valve H10 is opened, the preferred flushing time for flushing the fire-fighting looped network B24 is 4 min.
And (3.3) flushing the fire-fighting looped network C25 by controlling the opening degrees of the fire-fighting isolation valve N16 and the fire-fighting isolation valve L14 until the water quality in the fire-fighting looped network C25 is detected to be qualified
Recovering the fire-fighting isolation valve H10 to be in a full-open state, closing the fire-fighting isolation valve N16, measuring the flow rate of a water changing pipeline of a fire-fighting water system by an ultrasonic flowmeter to be slightly more than 1m/s, controlling the opening degree of the fire-fighting isolation valve L14, and flushing the fire-fighting looped network C25 for more than or equal to 5 min; the time for opening the fire-fighting isolation valve N16 to continuously flush the fire-fighting looped network C25 is more than or equal to 2 min; sampling the water quality of the fire-fighting looped network C25, and judging that the flushing of the fire-fighting looped network C25 is qualified after the water quality is clear visually and the light transmittance is more than 90%.
For example, when the water change line flow is preferably 1.01 m/s; when the fire-fighting isolation valve L14 is closed, the preferred flushing time for flushing the fire-fighting looped network B24 is 5 min; when the fire isolation valve L14 is opened, the preferred flushing time for flushing the fire-fighting looped network B24 is 2 min. For example, when the water change line flow is preferably 1.02 m/s; when the fire-fighting isolation valve L14 is closed, the preferred flushing time for flushing the fire-fighting looped network B24 is 8 min; when the fire isolation valve L14 is opened, the preferred flushing time for flushing the fire-fighting looped network B24 is 3 min. For example, when the water change line flow is preferably 1.03 m/s; when the fire-fighting isolation valve L14 is closed, the preferred flushing time for flushing the fire-fighting looped network B24 is 10 min; when the fire isolation valve L14 is opened, the preferred flushing time for flushing the fire-fighting looped network B24 is 4 min.
Step (3.4) flushing the rest of the fire-fighting looped network 26 according to the method from the step (3.1) to the step (3.3)
And (3) restoring the fire-fighting isolation valve L14 to be in a full-open state, restoring the fire-fighting isolation valves of the rest of the fire-fighting looped networks 26 to be in a full-open state, and starting to flush the rest of the fire-fighting looped networks 26 according to the method of the step 3.1 to the step 3.3. And sampling the water quality of the rest fire-fighting looped networks 26, and finishing the flushing of the fire-fighting looped networks after the water quality is detected to be qualified according to the qualified water quality optimization standard.
Step (4) controlling the opening of the fire-fighting isolation valve, flushing the pipeline between the fire pump and the fire-fighting isolation valve to control the opening of the fire-fighting isolation valve B4, and adjusting the water discharge flow of the water quality optimization device to be more than or equal to 250m3And h, ensuring that the flow speed of the main ring network of the fire-fighting water system is less than or equal to 2.5m/s, and starting to flush the pipeline between the fire pump A1, the fire pump B2 and the fire-fighting isolation valve O17 for more than or equal to 10 min. The water quality of the pipeline is sampled, and the pipeline can be judged to be qualified after the water quality is clear by visual inspection and the light transmittance is more than 90%.
For example, the opening degree of the fire-fighting isolation valve B4 is controlled, and the drainage flow of the water quality optimization device is adjusted to 250m again3The flow rate of the total loop network of the fire-fighting water system is 2.5m/s, and the fire pump A1 is started to be flushed,Pipeline between fire pump B2 and fire isolation valve O17 for 10 min. For example, the opening degree of the fire-fighting isolation valve B4 is controlled, and the drainage flow of the water quality optimization device is adjusted to 300m again3And h, the flow rate of the main loop network of the fire-fighting water system is 2m/s, and the pipeline between the fire-fighting pump A1, the fire-fighting pump B2 and the fire-fighting isolation valve O17 is flushed for 15 min. For example, the opening degree of the fire-fighting isolation valve B4 is controlled, and the drainage flow of the water quality optimization device is adjusted to 300m again3And h, the total loop network flow rate of the fire water system is 1.5m/s, and the pipeline between the fire pump A1, the fire pump B2 and the fire isolation valve O17 begins to be flushed for 20 min.
Step (5), closing the electric water change valve 19 of the device, checking that all the fire-fighting isolation valves are in a full-open state, closing the isolation valve of the device, removing the fire-fighting hose connected with the quick connector, and finishing the water quality optimization work of the fire-fighting water system
Closing the electric water changing valve 19 of the device, recovering the fire-fighting isolation valve B4 to be in a fully open state, stopping the fire-fighting pump A1 and the fire-fighting pump B2, checking the valve states of the fire-fighting isolation valve A3, the fire-fighting isolation valve B4, the fire-fighting isolation valve C5, the fire-fighting isolation valve D6, the fire-fighting isolation valve E7, the fire-fighting isolation valve F8, the fire-fighting isolation valve G9, the fire-fighting isolation valve H10, the fire-fighting isolation valve I11, the fire-fighting isolation valve J12, the fire-fighting isolation valve K13, the fire-fighting isolation valve F14, the fire-fighting isolation valve F15, the fire-fighting isolation valve F16 and the fire-fighting isolation valve O17 to be fully open. The device isolation valve a18, device isolation valve B20 are closed and the fire hose connected to the quick connector 22 is removed. And finishing the water quality optimization work of the fire water system.
As shown in figure 1, when water quality optimization is carried out, a fire pump is started to build a certain pressure on an annular pipe network, a valve on the device is opened as required, and a certain flow (for example 250 m) is built through the device3Flow rate of water discharged per hour). The water in the pipeline flows in one direction under the control of the valve on the looped network pipeline, and the looped network main pipeline is washed for more than 30 minutes. And then, switching through a valve according to requirements, establishing a certain flow velocity for fire water in the pipeline of the water exchange area, and starting to exchange water for the small looped network on the looped network. Sequentially changing water for all the small ring nets, setting flushing time according to water filling quantity of pipelines of a factory building where the small ring nets are located, and changing water quality light transmittance of a water changing area before flushing is finishedAnd (4) sampling, and after the sample is clear by visual observation and the light transmittance reaches more than 90%, starting to change water for the next small looped network. By the method, dirty water in the looped network pipeline of the fire water system is completely pushed out by clean water through the device, and the purpose of optimizing the quality of fire water is achieved.
As shown in fig. 1, under the condition that the fire detection alarm system is working normally, if a fire occurs in a certain area during the water quality optimization work, the fire alarm signal sent by the fire alarm 27 in the fire area is transmitted to the water-changing electric valve 19, the switching signal of the water-changing electric valve 19 quickly closes the water-changing electric valve 19 on the fire water quality optimization device of the nuclear power plant in a linkage manner, the water quality optimization work is suspended, the requirements on the water spray flow and pressure in the fire extinguishing area are maintained, and therefore the fire extinguishing function of the fire water system is not affected by the water quality optimization work under the condition of ensuring the fire.
When the water quality optimization work of the fire water system is carried out, a fire alarm occurs in a certain area, and the water changing device can immediately stop the water quality optimization work. Taking the case of fire alarm occurring when the looped network C25 water changing work is being performed, the fire alarm signal sent by the fire alarm 27 is transmitted to the water changing electric valve 19, and the switching signal of the water changing electric valve 19 quickly closes the electric water changing valve 19 of the water quality optimizing device, so that the fire fighting spray and the fire fighting flow and pressure in the fire area are ensured, and the fire fighting function of the fire fighting water system is not affected by the water quality optimizing work.
And (3) the qualified standard and period of water quality optimization: the utility model relates to a nuclear power station fire-fighting water quality of water optimization device and method confirms that the excellent qualified standard of fire-fighting water quality is: visually clear, with a light transmission greater than 90%. In order to avoid the problem of oxygen content increase caused by the new water entering the fire-fighting system pipeline, the utility model discloses in will change the cycle of fire-fighting water system water quality optimization after the water for the first time and go on once for 3-5 years for reduce the corrosion problem that the new water entering leads to.
The present invention has been described in detail with reference to the drawings and examples, but the present invention is not limited to the above examples, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art. The present invention can adopt the prior art for the content which is not described in detail in the present invention.
Claims (11)
1. The utility model provides a nuclear power station fire water quality of water optimizing apparatus which characterized in that: the device comprises a device isolation valve A (18), a device electric water change valve (19), a device isolation valve B (20) and a quick coupling (22) which are arranged between a fire protection isolation valve B (4) and a fire protection isolation valve O (17) on a main ring network pipeline of a nuclear power station fire water system, wherein one end of the device isolation valve A (18) is communicated with the fire protection isolation valve B (4) and the fire protection isolation valve O (17), the other end of the device isolation valve A (18) is communicated with one end of the device electric water change valve (19), the other end of the device electric water change valve (19) is communicated with one end of the device isolation valve B (20), and the other end of the device isolation valve B (20) is communicated with one end of the quick coupling (22).
2. The water quality optimization device for fire-fighting water in nuclear power plants according to claim 1, characterized in that: and a device exhaust valve (21) is arranged between the electric water change valve (19) and the device isolation valve B (20).
3. The water quality optimization device for fire-fighting water in nuclear power plants according to claim 2, characterized in that: the electric water change valve (19) of the device is further communicated with a fire alarm (27).
4. A fire fighting water system for a nuclear power plant provided with the fire fighting water quality optimizing apparatus for a nuclear power plant according to any one of claims 1 to 3, characterized in that: the system comprises a fire pump, a main ring network pipeline communicated with an outlet of the fire pump, a fire-fighting isolation valve A (3), a fire-fighting isolation valve B (4) and a fire-fighting isolation valve O (17) which are arranged on the main ring network pipeline, a plurality of sub fire-fighting ring networks connected in series are arranged between the fire-fighting isolation valve A (3) and the fire-fighting isolation valve B (4), and the water quality optimization device for the fire water of the nuclear power station is positioned between the isolation valve O (17) and the fire-fighting isolation valve B (4).
5. The fire fighting water system for a nuclear power plant of the fire fighting water quality optimizing device for the nuclear power plant according to claim 4, characterized in that: the fire pump include fire pump A (1), fire pump B (2), the export of fire pump A (1), fire pump B (2) all with the one end intercommunication of fire control isolation valve A (3), fire control isolation valve B (4).
6. A fire-fighting water system of a nuclear power plant of the fire-fighting water quality optimization device of the nuclear power plant according to claim 5, characterized in that: the entrance and the exit of each sub-fire-fighting looped network are respectively provided with a fire-fighting isolation valve, each sub-fire-fighting looped network is composed of two fire-fighting isolation valves connected in parallel and a fire-fighting looped network, and the entrance and the exit of the two fire-fighting isolation valves connected in parallel are respectively communicated with one end of the adjacent sub-fire-fighting looped network.
7. A fire-fighting water system of a nuclear power plant of the fire-fighting water quality optimization device of the nuclear power plant according to claim 6, characterized in that: the parallel fire-fighting isolation valve D (6), the fire-fighting isolation valve F (8) and the fire-fighting looped network A (23) form a first sub-fire-fighting looped network, inlets of the parallel fire-fighting isolation valve D (6) and the fire-fighting isolation valve F (8) are respectively communicated with an inlet of the fire-fighting looped network A (23) and one end of the fire-fighting isolation valve C (5), and outlets of the parallel fire-fighting isolation valve D (6) and the fire-fighting isolation valve F (8) are respectively communicated with an outlet of the fire-fighting looped network A (23) and one end of the fire-fighting isolation valve E (7); the other end of the fire-fighting isolation valve C (5) is communicated with the other end of the fire-fighting isolation valve A (3), and the other end of the fire-fighting isolation valve E (7) is communicated with one end of the second sub fire-fighting looped network.
8. A fire-fighting water system of a nuclear power plant of a fire-fighting water quality optimization device of the nuclear power plant according to claim 7, characterized in that: the parallel fire-fighting isolation valve H (10), the fire-fighting isolation valve J (12) and the fire-fighting looped network B (24) form a second sub fire-fighting looped network, the inlets of the parallel fire-fighting isolation valve H (10) and the fire-fighting isolation valve J (12) are respectively communicated with the inlet of the fire-fighting looped network B (24) and one end of the fire-fighting isolation valve G (9), and the outlets of the parallel fire-fighting isolation valve H (10) and the fire-fighting isolation valve J (12) are respectively communicated with the outlet of the fire-fighting looped network B (24) and one end of the fire-fighting isolation valve I (11); the other end of the fire-fighting isolation valve G (9) is communicated with the other end of the fire-fighting isolation valve E (7), and the other end of the fire-fighting isolation valve I (11) is communicated with one end of the third sub fire-fighting looped network.
9. A fire-fighting water system for a nuclear power plant of a fire-fighting water quality optimization device for a nuclear power plant according to claim 8, characterized in that: the fire-fighting isolation valve L (14) and the fire-fighting isolation valve N (16) which are connected in parallel and the fire-fighting looped network C (25) form a third sub fire-fighting looped network, the inlets of the fire-fighting isolation valve L (14) and the fire-fighting isolation valve N (16) which are connected in parallel are respectively communicated with the inlet of the fire-fighting looped network C (25) and one end of the fire-fighting isolation valve K (13), and the outlets of the fire-fighting isolation valve L (14) and the fire-fighting isolation valve N (16) which are connected in parallel are respectively communicated with the outlet of the fire-fighting looped network C (25) and one end of the fire-fighting isolation valve M (15); the other end of the fire-fighting isolation valve K (13) is communicated with the other end of the fire-fighting isolation valve I (11), and the other end of the fire-fighting isolation valve M (15) is communicated with one end of the rest of other fire-fighting looped networks (26).
10. A fire-fighting water system for a nuclear power plant of a fire-fighting water quality optimization device for a nuclear power plant according to claim 9, characterized in that: the other end of the rest fire-fighting looped network (26) is communicated with one end of a fire-fighting isolation valve O (17).
11. A fire-fighting water system for a nuclear power plant of a fire-fighting water quality optimization device for a nuclear power plant according to claim 10, characterized in that: and a pipeline between the other end of the fire-fighting isolation valve O (17) and the fire-fighting isolation valve B (4) is communicated with one end of a device isolation valve A (18) of the water quality optimization device for the fire-fighting water of the nuclear power station.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021217155.8U CN213746153U (en) | 2020-06-28 | 2020-06-28 | Nuclear power station fire water quality optimization device and system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021217155.8U CN213746153U (en) | 2020-06-28 | 2020-06-28 | Nuclear power station fire water quality optimization device and system |
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| CN213746153U true CN213746153U (en) | 2021-07-20 |
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| CN202021217155.8U Active CN213746153U (en) | 2020-06-28 | 2020-06-28 | Nuclear power station fire water quality optimization device and system |
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| CN (1) | CN213746153U (en) |
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