CN212942117U - Oil filter for transferring spent fuel of nuclear power station - Google Patents
Oil filter for transferring spent fuel of nuclear power station Download PDFInfo
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- CN212942117U CN212942117U CN202021374486.2U CN202021374486U CN212942117U CN 212942117 U CN212942117 U CN 212942117U CN 202021374486 U CN202021374486 U CN 202021374486U CN 212942117 U CN212942117 U CN 212942117U
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Abstract
The invention relates to the field of machinery, in particular to an oil filter for transferring spent fuel in a nuclear power station. In the spent fuel transfer process, the exhaust gas of the vacuum pump contains a certain amount of vacuum oil mist and water vapor and possibly a certain amount of radioactive dust, and the exhaust gas cannot be directly exhausted to the DVK system. The vacuum pump exhaust therefore needs to be filtered to be discharged to the DVK system. The invention comprises a drainage system, a filtering system and a supporting system; the filtering system is integrally arranged in the supporting system, and the drainage system is fixedly arranged on the side surface of the cylinder body of the supporting system. Wherein, filtration system includes the block, strains a section of thick bamboo, oil strain layer apron, sealing washer, oil strain layer bottom plate and water layer. The device simultaneously filters oil mist, water vapor and dust possibly existing in the exhaust of the vacuum pump, is convenient and efficient, and can be disassembled.
Description
Technical Field
The invention relates to the field of machinery, in particular to an oil filter for transferring spent fuel in a nuclear power station.
Background
During the transfer process of the spent fuel of the nuclear power station, a vacuum pump is needed to carry out vacuum pumping operation on the spent fuel transport container. And finally exhausting the exhaust gas of the vacuum pump to a DVK system of the spent fuel factory. In this case, the exhaust gas from the vacuum pump contains a certain amount of vacuum oil mist, water vapor, and possibly a certain amount of radioactive dust, and cannot be directly exhausted to the DVK system. The vacuum pump exhaust therefore needs to be filtered to be discharged to the DVK system.
The utility model discloses mainly be to above problem, to the characteristics of evacuation technology in the nuclear power station spent fuel transportation, provide a convenient filtration method and equipment.
Disclosure of Invention
1. The purpose is as follows:
the utility model provides an oil filtering method and equipment for nuclear power station spent fuel transfer.
The difficulty of vacuumizing, exhausting and filtering in the spent fuel transfer process is as follows: it is necessary to simultaneously filter the oil mist, water vapor and possible dust present in the exhaust gas of the vacuum pump.
2. The technical scheme is as follows:
an oil filter for transferring spent fuel of a nuclear power station comprises a drainage system, a filtering system and a supporting system; the filtering system is integrally arranged in the supporting system, and the drainage system is fixedly arranged on the side surface of the cylinder body of the supporting system; the filtering system comprises a cover cap, a filtering cylinder, an oil filtering layer cover plate, a sealing ring, an oil filtering layer bottom plate and a water layer; the oil filtering layer bottom plate is integrally connected with the cylinder body, the oil filtering layer cover plate is integrally connected with the filter cylinder, the oil filtering layer bottom plate is connected with the oil filtering layer cover plate through a stud and a nut on the oil filtering layer bottom plate, and a sealing ring is arranged at the joint of the oil filtering layer bottom plate and the oil filtering layer cover plate for sealing; the lower part of the filter cylinder is communicated with the next oil filtering layer, and the side surface of the filter cylinder is provided with a plurality of rows of round holes; the cap end face of each oil filter layer is submerged into the water layer.
The supporting system comprises a cover plate, a cylinder body, a base and a window; the cover plate is fixedly connected with the cylinder body and is positioned at the top end of the cylinder body; the base is of a frame structure, and the base is fixedly connected with the barrel and is positioned at the bottom end of the barrel.
The drainage system comprises a main drainage valve, a bottom drainage valve, a water injection valve A, a water injection valve B, a water injection valve C, a water injection valve D, a water injection pipe, a water source valve and an exhaust pipe; the bottom layer drain valve is fixedly connected with the bottom of the barrel; the bottom drain valve, water injection valve A, water injection valve B, water injection valve C and water injection valve D are connected in parallel and are all connected with the water injection pipe.
The upper end of the water injection pipe is connected with a water source valve, and the lower end of the water injection pipe is connected with a main drain valve.
The side surface of the cylinder body is fixedly connected with an air inlet pipe.
The side surface of the cylinder body is fixedly connected with a window.
The window, the air inlet pipe and the drainage system are uniformly arranged on the cylinder body.
The central position of the cover plate is provided with a through hole, the cover plate is fixedly connected with the exhaust pipe, and the exhaust pipe penetrates through the through hole.
The top surface of the cover cap is fixedly connected with the filter cylinder through bolts, the cover cap is in a circular truncated cone shape, and the upper bottom surface is smaller than the lower bottom surface during installation.
Each layer of the oil filtering layer is correspondingly connected with a water injection valve, the oil filtering layer is n layers, and the number of the water injection valves is also n correspondingly.
3. The effect is as follows:
(1) the method and the equipment can realize exhaust filtration of a vacuumizing process in the transfer process of the spent fuel;
(2) the method and the device can simultaneously filter out oil mist, water vapor and dust in the exhaust gas;
(3) the equipment related to the method does not need to disassemble the filter body to replace the filter element, only needs to replace the water in the oil filter regularly, and has low cost and convenient operation;
(4) the equipment related to the scheme has small resistance to exhaust, and can ensure smooth exhaust of the vacuum pump under the condition of effectively filtering oil mist, water vapor and dust;
(5) the method and the equipment have small volume and are conveniently integrated with other modules for transferring the spent fuel into a whole.
Drawings
FIG. 1 oil filter perspective view
FIG. 2 oil filter front view
In the figure: 1. the water injection device comprises a main water discharge valve, 2 parts of a bottom layer water discharge valve, 3 parts of a water injection valve A, 4 parts of a water injection valve B, 5 parts of a water injection valve C, 6 parts of a water injection valve D, 7 parts of a water injection pipe, 8 parts of a water source valve, 9 parts of an exhaust pipe, 10 parts of a cover plate, 11 parts of a cylinder body, 12 parts of a cover cap, 13 parts of a filter cartridge, 14 parts of an oil filtering layer cover plate, 15 parts of a sealing ring, 16 parts of an oil filtering layer bottom plate, 17 parts of an air inlet pipe, 18 parts of a water.
Detailed Description
The oil filtering filter is shown in figure 1 and comprises a main water discharge valve 1, a bottom water discharge valve 2, a water injection valve A3, a water injection valve B4, a water injection valve C5, a water injection valve D6, a water injection pipe 7, a water source valve 8, an exhaust pipe 9, a cover plate 10, a cylinder body 11, a cover cap 12, a filter cartridge 13, an oil filtering layer cover plate 14, a sealing ring 15, an oil filtering layer bottom plate 16, an air inlet pipe 17, a water layer 18, a base 19 and a window 20.
The inside of the oil filter is provided with 4 oil filtering layers, and each oil filtering layer consists of an oil filtering layer cover plate 14, a filter cylinder 13, a cover cap 12, an oil filtering layer bottom plate 16, a sealing ring 15 and a water layer 18. Wherein the oil filtering layer bottom plate 16 and the cylinder body 11 are welded into a whole, and the oil filtering layer cover plate 14 and the filter cylinder 13 are welded into a whole. The oil filtering layer bottom plate 16 and the oil filtering layer cover plate 14 are connected through the studs and the nuts on the oil filtering layer bottom plate 16, and the joint of the studs and the nuts is provided with the sealing ring 15 for sealing, so that the water of each oil filtering layer can not leak to the next layer. The lower part of the filter cylinder 13 is communicated with the next oil filtering layer, and the side surface of the filter cylinder is provided with a plurality of rows of round holes so as to facilitate the gas of the lower layer to escape into the cover cap of the upper layer. The lower end face of the cap 12 of each oil filtering layer is immersed in the water layer 18, the next layer of gas from the filter cartridge 13 passes through the water layer through the restraint and the guide of the cap 12, the oil mist, the water vapor and the dust in the raw gas are remained in the water layer, and the filtered gas passes through the water layer to enter the space of the layer and is guided to enter the next water layer through the filter cartridge 13. The main drain valve 1 is used to drain water in the oil filter. The bottom layer water discharge valve 2 is used for discharging water generated by condensation of water vapor in the intake air on the bottom layer. The water injection valve a3, the water injection valve B4, the water injection valve C5, and the water injection valve D6 are used for water injection and water discharge of each oil filtration layer. The water source valve 8 is used for controlling water from the water source to enter the oil filter.
When the filter is used, air enters through the air inlet pipe 17, enters the bottom of the oil filter, passes through the filter cartridge 13, enters the cover cap 12, passes through the water layer 18 and then enters the upper oil filter layer. As the gas passes through the water layer, most of the oil mist, water vapor and dust in the gas remain in the water layer. The gas from the vacuum pump is filtered layer by layer, and oil mist, water vapor and dust in the gas are effectively filtered.
The specific operation steps are as follows:
as shown in fig. 2, when in use, a water source is connected to an interface of the water source valve 8, the water source valve 8 is opened, water is respectively and sequentially injected into each water layer by controlling the connection and disconnection of the water injection valves 13 to 46, the water injection condition of each water layer is observed through the window 20 during water injection, and when the water layer reaches a certain height, the water layer usually just submerges about 10mm above the cap, and the corresponding water injection valve is closed;
in the water injection process, the closing of a main drain valve 1 and a bottom layer drain valve 2 needs to be ensured;
after the water injection is finished, closing the water source valve 8;
when the device is used, the exhaust pipe of the vacuum pump is connected with the air inlet pipe 17, the exhaust pipe 9 is connected with the exhaust pipe line of a site or a corresponding device, exhaust from the vacuum pump enters the oil filter, oil mist, water vapor and dust are left in each water layer of the oil filter through layer-by-layer filtering of each oil filter layer, and filtered gas is exhausted into the exhaust pipe line of the site or the corresponding device through the exhaust pipe 9.
In the use, when the steam content of admitting air was too high, the steam in admitting air can be stayed in the water layer, probably caused the water layer water level to rise, when the water level was too high, can discharge the water in the water layer through the cooperation of each layer water injection valve and master drain valve 1, controls each water layer water level in the high range of requirement. When the drain valve does not have the condition of external drainage in the use process, the water of the water layer is drained to the bottom layer of the oil filter for temporary storage by utilizing the cooperation of the water injection valves of all layers and the drain valve 2 at the bottom layer.
After the use, the water injection valves of all layers, the drain valve 2 of the bottom layer and the main drain valve 1 are opened to drain the water of the oil filter.
Claims (10)
1. The utility model provides an oil filter for nuclear power station spent fuel is transported which characterized in that: comprises a drainage system, a filtering system and a supporting system; the filtering system is integrally arranged in the supporting system, and the drainage system is fixedly arranged on the side surface of a cylinder (11) of the supporting system; the filtering system comprises a cover cap (12), a filtering cylinder (13), an oil filtering layer cover plate (14), a sealing ring (15), an oil filtering layer bottom plate (16) and a water layer (18); the oil filtering layer bottom plate (16) is integrally connected with the barrel body (11), the oil filtering layer cover plate (14) is integrally connected with the filter cylinder (13), the oil filtering layer bottom plate (16) is connected with the oil filtering layer cover plate (14) through a stud and a nut on the oil filtering layer bottom plate (16), and a sealing ring (15) is arranged at the joint of the two for sealing; the lower part of the filter cylinder (13) is communicated with the next oil filtering layer, and the side surface of the filter cylinder (13) is provided with a plurality of rows of round holes; the end face of the cap (12) of each oil-filtering layer is immersed into the water layer (18).
2. The oil filter for nuclear power plant spent fuel transfer of claim 1, characterized in that: the supporting system comprises a cover plate (10), a cylinder body (11), a base (19) and a window (20); the cover plate (10) is fixedly connected with the cylinder body (11) and is positioned at the top end of the cylinder body (11); the base (19) is of a frame structure, and the base (19) is fixedly connected with the barrel (11) and is positioned at the bottom end of the barrel (11).
3. The oil filter for nuclear power plant spent fuel transfer of claim 2, characterized in that: the drainage system comprises a main drainage valve (1), a bottom drainage valve (2), a water injection valve A (3), a water injection valve B (4), a water injection valve C (5), a water injection valve D (6), a water injection pipe (7), a water source valve (8) and an exhaust pipe (9); the bottom layer drain valve (2) is fixedly connected with the bottom of the cylinder body (11); the bottom layer drain valve (2), the water injection valve A (3), the water injection valve B (4), the water injection valve C (5) and the water injection valve D (6) are connected in parallel and are all connected with the water injection pipe (7).
4. The oil filter for nuclear power plant spent fuel transfer of claim 3, wherein: the upper end of the water injection pipe (7) is connected with a water source valve (8), and the lower end is connected with a main drain valve (1).
5. The oil filter for nuclear power plant spent fuel transfer of claim 3, wherein: the side surface of the cylinder body (11) is fixedly connected with an air inlet pipe (17).
6. The oil filter for nuclear power plant spent fuel transfer of claim 3, wherein: the side surface of the cylinder body (11) is fixedly connected with a window (20).
7. The oil filter for nuclear power plant spent fuel transfer of claim 5, wherein: the window (20), the air inlet pipe (17) and the drainage system are uniformly arranged on the cylinder body.
8. The oil filter for nuclear power plant spent fuel transfer of claim 2, characterized in that: the central position of the cover plate (10) is provided with a through hole, the cover plate (10) is fixedly connected with the exhaust pipe (9), and the exhaust pipe (9) penetrates through the through hole.
9. The oil filter for nuclear power plant spent fuel transfer of claim 1, characterized in that: the top surface of the cover cap (12) is fixedly connected with the filter cartridge (13) through bolts, the cover cap (12) is in a circular truncated cone shape, and the upper bottom surface is smaller than the lower bottom surface during installation.
10. The oil filter for nuclear power plant spent fuel transfer of claim 1, characterized in that: each layer of the oil filtering layer is correspondingly connected with a water injection valve, the oil filtering layer is n layers, and the number of the water injection valves is also n correspondingly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021374486.2U CN212942117U (en) | 2020-07-14 | 2020-07-14 | Oil filter for transferring spent fuel of nuclear power station |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021374486.2U CN212942117U (en) | 2020-07-14 | 2020-07-14 | Oil filter for transferring spent fuel of nuclear power station |
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| CN212942117U true CN212942117U (en) | 2021-04-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111773867A (en) * | 2020-07-14 | 2020-10-16 | 中核武汉核电运行技术股份有限公司 | Oil filter for transferring spent fuel of nuclear power station |
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2020
- 2020-07-14 CN CN202021374486.2U patent/CN212942117U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111773867A (en) * | 2020-07-14 | 2020-10-16 | 中核武汉核电运行技术股份有限公司 | Oil filter for transferring spent fuel of nuclear power station |
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