CN212135976U - Liquid level simulation device for liquid level meter of spent fuel pool of nuclear power plant - Google Patents
Liquid level simulation device for liquid level meter of spent fuel pool of nuclear power plant Download PDFInfo
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- CN212135976U CN212135976U CN201922264504.5U CN201922264504U CN212135976U CN 212135976 U CN212135976 U CN 212135976U CN 201922264504 U CN201922264504 U CN 201922264504U CN 212135976 U CN212135976 U CN 212135976U
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- liquid level
- pressure
- spent fuel
- fuel pool
- level meter
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The utility model belongs to the technical field of nuclear power station maintenance, in particular to a liquid level simulation device of a spent fuel pool liquid level meter of a nuclear power plant, which comprises a pressure generation part, a pressure distribution part and a pressure indication part; the pressure distribution part connects the pressure generation part, the pressure indication part and the spent fuel pool liquid level meter to the same pipeline loop; the pressure generating part is a direct-current micro piston air pump with a storage battery with the rated output voltage of 24V, the micro piston air pump provides the pressure of-10-100 kPa for the whole device, and the outlet of the micro piston air pump is directly connected with the air pressure distributing part through a PU hose; the air storage tank is used for storing compressed air provided by the pressure generating part, and two manual ball valves are used for the air charging and discharging operations of the whole device. The liquid level simulation calibration device of the liquid level meter of the spent fuel pool simulates the liquid level change of the spent fuel pool through the inflation and exhaust of the liquid level meter, and the inspection work of the instrument in the liquid level change process can be realized.
Description
Technical Field
The utility model belongs to the technical field of the nuclear power station overhauls, concretely relates to nuclear power plant spentnuclear fuel pond level gauge liquid level simulation device.
Background
The spent fuel of the nuclear power plant is stored in a spent fuel water pool in a fuel plant. Under the normal operating mode, the fuel top is covered by the boron aqueous solution that highly is 10m, can avoid radioactivity to cause the influence to the environment in the factory building, in case when boron aqueous solution is less than 10m, the radioactivity of spent fuel will cause the adverse effect to the internal environment in the factory building, influences nuclear power plant's normal operating.
The spent fuel pool liquid level meter is important equipment of a nuclear power plant and is used for monitoring and storing the water level in a container of radioactive spent fuel of the nuclear power plant, and the height of boron water solution above the spent fuel is judged according to data information provided by operating personnel of the nuclear power plant through the spent fuel pool liquid level meter, so that the safe and stable operation of a unit is ensured.
The structure of the spent fuel pool liquid level meter is the same as the principle of the communicating vessel, a probe for measuring the liquid level is positioned in a sealed seamless stainless steel outer wall, the inside of the liquid level meter is arranged in the outer wall, and the spent fuel pool is arranged outside the outer wall.
The lower part and the spent fuel pond of level gauge are connected, and upper portion is connected with the atmosphere in the factory building, and the inside liquid level of level gauge is the same with spent fuel pond liquid level and changes along with the change of spent fuel pond liquid level, and the effect of the inside liquid level of probe measurement level gauge is equivalent to the liquid level of measuring whole spent fuel pond, and the measurement water level of level gauge can be simulated in the lift of the inside liquid level of simulation level gauge.
Disclosure of Invention
The utility model aims at the above-mentioned defect that prior art exists, provide a device of the inside liquid level lift of simulation spent fuel pool level gauge liquid level, regularly test the function of level gauge, guarantee that the function of level gauge satisfies the operation demand of power plant.
The technical scheme of the utility model as follows:
a liquid level simulation device of a spent fuel pool liquid level meter of a nuclear power plant comprises a pressure generation part, a pressure distribution part and a pressure indication part;
the pressure distribution part connects the pressure generation part, the pressure indication part and the spent fuel pool liquid level meter to the same pipeline loop;
the pressure generating part is a direct-current micro piston air pump with a storage battery with the rated output voltage of 24V, the micro piston air pump provides the pressure of-10-100 kPa for the whole device, and the outlet of the micro piston air pump is directly connected with the air pressure distributing part through a PU hose;
the air storage tank is used for storing compressed air provided by the pressure generating part, and two manual ball valves are used for the air charging and discharging operations of the whole device.
The pressure indicating part is an electronic display instrument with the measuring range of-10-100 kPa, the instrument is vertically installed and is connected with the pressure distributing part through threads at the lower part of the instrument and used for displaying the current pressure value of the whole gas loop.
The utility model provides a spent fuel pool level gauge liquid level simulation device of nuclear power plant, pressure take place the part by 24V DC power supply, miniature piston air pump and PU hose constitution.
A liquid level simulation device of a spent fuel pool liquid level meter of a nuclear power plant is characterized in that a 24V direct-current power supply provides 24V rated working voltage for a micro piston air pump through a copper cable, an input port and an output port are arranged for the micro piston air pump, and compressed air or vacuum degree is provided for a whole air path distribution system by switching connection of a PU hose and input/output of the micro piston air pump during work, so that the liquid level simulation device is a power part of the whole device.
The utility model provides a nuclear power plant spent fuel pool level gauge liquid level simulation device, pressure distribution part by the gas holder of taking pressure display certainly, manual ball valve, gas-water separator, manual needle type valve and quick-operation joint and stainless steel tee bend A, stainless steel tee bend B and stainless steel tee bend C constitute.
The utility model provides a nuclear power plant spent fuel pool level gauge liquid level simulation device, the gas holder passes through stainless steel tee bend A and PU hose and manual ball valve intercommunication, and stainless steel tee bend B is connected to the manual ball valve other end, and catch water is connected to the stainless steel tee bend B other end, and stainless steel tee bend C is connected to catch water's the other end, and manual needle type valve and quick-operation joint are connected respectively to stainless steel tee bend C's other both ends.
A liquid level simulation device of a spent fuel pool liquid level meter of a nuclear power plant is characterized in that a quick connector of the device is connected with an atmosphere communicating port of the spent fuel pool liquid level meter,
the utility model provides a nuclear power plant spent fuel pool level gauge liquid level simulation device, pressure indication part comprises the manometer, is connected with the pressure distribution part through stainless steel tee bend B8.
The liquid level simulation device for the spent fuel pool liquid level meter of the nuclear power plant is characterized in that the range of a pressure meter is-50-100 kPa, the pressure meter is powered by a storage battery, and pressure values inside a gas circuit distribution system and the spent fuel pool liquid level meter are measured through connection with a pressure distribution system.
A liquid level simulation device of a spent fuel pool liquid level meter of a nuclear power plant adopts a stainless steel metal pipe with the inner diameter of 8mm to connect parts, and a gas path distribution system is formed.
The utility model provides a nuclear power plant spent fuel pool level gauge liquid level simulation device, the internal diameter of PU hose is 8 mm.
The beneficial effects of the utility model reside in that:
the liquid level simulation calibration device of the liquid level meter of the spent fuel pool simulates the liquid level change of the spent fuel pool through the inflation and exhaust of the liquid level meter, and the inspection work of the instrument in the liquid level change process can be realized.
And the pressure indicating part can provide a reference value in the instrument checking process, so that the reference basis is improved for the checking work.
The technology effectively improves the efficiency of the verification work of the spent fuel pool liquid level meter, reduces the maintenance cost of the operation of the power plant, and improves the economic benefit of the power plant.
Drawings
Fig. 1 is the schematic diagram of the liquid level simulation device of the spent fuel pool liquid level meter.
1. 24V direct current power supply, 2, a miniature piston air pump, 3, a PU hose, 4, an air storage tank, 5, stainless steel tee joints A and 6, a manual ball valve, 7, a pressure gauge, 8, stainless steel tee joints B and 9, a gas-water separator, 10, a manual needle valve, 11, stainless steel tee joints C and 12 and a quick connector.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The spent fuel pool liquid level simulation device is divided into a pressure generation part, a pressure distribution part and a pressure indication part. The pressure generating part is a direct-current micro piston air pump 2 with a storage battery with rated output voltage of 24V, the micro piston air pump 2 provides pressure of-10-100 kPa for the whole device, and an outlet of the micro piston air pump is directly connected with the air pressure distribution part through a PU hose 3 with the inner diameter of 8 mm.
The pressure distribution part connects the pressure generation part, the pressure indication part and the spent fuel pool liquid level meter to the same pipeline loop, the air storage tank is used for storing compressed air provided by the pressure generation part, and the two manual valves are used for the air charging and air discharging operation of the whole device. The pressure indicating part is an electronic display instrument with the measuring range of-10-100 kPa, the instrument is vertically installed and is connected with the pressure distributing part through threads at the lower part of the instrument, and the pressure indicating part is used for displaying the current pressure value of the whole gas loop, as shown in figure 1.
The pressure generating part consists of a 24V direct current power supply 1, a micro piston air pump 2 and a PU hose 3. The 24V direct current power supply 1 provides 24V rated working voltage for the micro piston air pump 2 through a copper cable, an input port and an output port are arranged for the micro piston air pump 2, and compressed air or vacuum degree is provided for the whole air path distribution system by switching connection of the PU hose 3 and the input/output of the micro piston air pump 2 during work, so that the power part of the whole device is realized.
The pressure distribution part consists of an air storage tank 4 with a pressure display, a manual ball valve 6, a gas-water separator 9, a manual needle valve 10, a quick joint 12, a stainless steel tee joint A5, a stainless steel tee joint B8 and a stainless steel tee joint C11.
The gas storage tank 4 is communicated with the PU hose 3 and the manual ball valve 6 through a stainless steel tee joint A5, the other end of the manual ball valve 6 is connected with a stainless steel tee joint B8, the other end of the stainless steel tee joint B8 is connected with a steam-water separator 9, the other end of the steam-water separator 9 is connected with a stainless steel tee joint C11, and the other two ends of the stainless steel tee joint C11 are respectively connected with a manual needle valve 10 and a quick connector 12.
Wherein, the components are connected by a stainless steel metal pipe with the inner diameter of 8mm to form an air path distribution system. When the device works, the liquid level in the spent fuel pool liquid level meter can be controlled by controlling the states of the manual ball valve 6 and the manual needle valve 10.
The pressure indicating part consists of a pressure gauge 7 and is connected with the pressure distributing part through a stainless steel tee joint B8. The range of the pressure gauge is-50-100 kPa, the pressure gauge is powered by a self-contained storage battery, and pressure values inside the gas circuit distribution system and the spent fuel pool liquid level meter are measured through connection with the pressure distribution system.
Connect device quick-operation joint 12 and spent fuel pond level gauge atmosphere intercommunication mouth, when the simulation operation that the liquid level descends is carried out to spent fuel pond level gauge to needs, confirm earlier that the PU hose 3 of pressure emergence part connects at the delivery outlet of miniature piston air pump 2, and manual needle type valve 10 is in the position of closing entirely, and manual ball valve 6 is in the position of closing entirely, and pressure gauge 7 of pressure display part is in operating condition. The starting button of the device is started, the device starts to automatically inflate the gas storage tank 4, when the pressure in the gas storage tank 4 meets the working requirements of the device, the manual ball valve 6 is started, the device supplies gas to the inside of the spent fuel pool liquid level meter through the gas path distribution part, the medium in the liquid level meter is discharged from the lower part under the action of the gas pressure, and the liquid level is lowered.
When the liquid level rising simulation of the spent fuel pool liquid level meter is needed, firstly, the PU hose 3 is confirmed to be connected with the input port of the micro piston air pump 2, the manual needle valve 10 is in the full-closed position, the manual ball valve 6 is in the full-closed position, and the pressure gauge 7 of the pressure display part is in the working state. The starting button of the device is started, the device starts to automatically pump air into the air storage tank 4, when the vacuum degree in the air storage tank 4 meets the working requirement of the device, the manual ball valve 6 is started, the device supplies air to the inside of the spent fuel pool liquid level meter through the air path distribution part, the medium in the liquid level meter is discharged from the lower part under the action of air pressure, and the liquid level is reduced.
The pressure gauge 7 displays the air pressure value inside the liquid level meter, when the air pressure value continuously rises, the liquid level can be judged to continuously fall, and when the air pressure value continuously falls, the liquid level can be judged to continuously rise. And calculating P as the reading of the pressure gauge, the density of a liquid medium in the spent fuel pool liquid level meter and the gravity acceleration through a formula, and obtaining the liquid level value inside the current spent fuel liquid level meter.
After the simulation work is finished, the manual ball valve 6 can be manually closed, the manual needle valve 10 is opened, the interior of the spent fuel pool liquid level meter is connected with the atmosphere, the liquid level inside and outside the liquid level meter can be restored to the same height through the communicating vessel principle, and the original function of the liquid level meter is restored.
Claims (10)
1. A liquid level simulation device of a spent fuel pool liquid level meter of a nuclear power plant comprises a pressure generation part, a pressure distribution part and a pressure indication part;
the pressure distribution part connects the pressure generation part, the pressure indication part and the spent fuel pool liquid level meter to the same pipeline loop;
the method is characterized in that:
the pressure generating part is a direct-current micro piston air pump with a storage battery with the rated output voltage of 24V, the micro piston air pump provides the pressure of-10-100 kPa for the whole device, and the outlet of the micro piston air pump is directly connected with the air pressure distributing part through a PU hose;
the air storage tank is used for storing compressed air provided by the pressure generating part, and the two manual ball valves are used for the air inflation and air exhaust operation of the whole device;
the pressure indicating part is an electronic display instrument with the measuring range of-10-100 kPa, the instrument is vertically installed and is connected with the pressure distributing part through threads at the lower part of the instrument and used for displaying the current pressure value of the whole gas loop.
2. The liquid level simulation device of the liquid level meter of the spent fuel pool of the nuclear power plant as claimed in claim 1, wherein: the pressure generating part consists of a 24V direct-current power supply, a micro piston air pump and a PU hose.
3. The liquid level simulation device of the liquid level meter of the spent fuel pool of the nuclear power plant as claimed in claim 2, wherein: the 24V direct-current power supply provides 24V rated working voltage for the micro piston air pump through a copper cable, an input port and an output port are arranged for the micro piston air pump, and compressed air or vacuum degree is provided for the whole air path distribution system by switching connection of the PU hose and the input/output of the micro piston air pump during work, so that the power part of the whole device is realized.
4. The liquid level simulation device of the liquid level meter of the spent fuel pool of the nuclear power plant as claimed in claim 1, wherein: the pressure distribution part consists of an air storage tank with a pressure display, a manual ball valve, a gas-water separator, a manual needle valve, a quick joint, a stainless steel tee joint A, a stainless steel tee joint B and a stainless steel tee joint C.
5. The liquid level simulation device of the liquid level meter of the spent fuel pool of the nuclear power plant as claimed in claim 4, wherein: the gas holder passes through stainless steel tee bend A and PU hose and manual ball valve intercommunication, and stainless steel tee bend B is connected to the manual ball valve other end, and the catch water is connected to the stainless steel tee bend B other end, and stainless steel tee bend C is connected to the catch water other end, and manual needle type valve and quick-operation joint are connected respectively to the other both ends of stainless steel tee bend C.
6. The liquid level simulation device of the liquid level meter of the spent fuel pool of the nuclear power plant as claimed in claim 5, wherein: and connecting the quick connector of the device with an atmosphere communication port of a spent fuel pool liquid level meter.
7. The liquid level simulation device of the liquid level meter of the spent fuel pool of the nuclear power plant as claimed in claim 1, wherein: the pressure indicating part consists of a pressure gauge and is connected with the pressure distributing part through a stainless steel tee joint B.
8. The liquid level simulation device of the liquid level meter of the spent fuel pool of the nuclear power plant as claimed in claim 6, wherein: the range of the pressure gauge is-50-100 kPa, the pressure gauge is powered by a self-contained storage battery, and pressure values inside the gas circuit distribution system and the spent fuel pool liquid level meter are measured through connection with the pressure distribution system.
9. The liquid level simulation device for the liquid level meter of the spent fuel pool of the nuclear power plant as claimed in any one of claims 1 to 8, wherein: the components are connected by stainless steel metal pipes with the inner diameter of 8mm to form an air path distribution system.
10. The nuclear power plant spent fuel pool liquid level gauge liquid level simulation device of claim 1, 2, 3 or 5, wherein: the inner diameter of the PU hose is 8 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922264504.5U CN212135976U (en) | 2019-12-17 | 2019-12-17 | Liquid level simulation device for liquid level meter of spent fuel pool of nuclear power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922264504.5U CN212135976U (en) | 2019-12-17 | 2019-12-17 | Liquid level simulation device for liquid level meter of spent fuel pool of nuclear power plant |
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| Publication Number | Publication Date |
|---|---|
| CN212135976U true CN212135976U (en) | 2020-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922264504.5U Active CN212135976U (en) | 2019-12-17 | 2019-12-17 | Liquid level simulation device for liquid level meter of spent fuel pool of nuclear power plant |
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| CN (1) | CN212135976U (en) |
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- 2019-12-17 CN CN201922264504.5U patent/CN212135976U/en active Active
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