CN219457298U - Metal corrugated sealing type oil storage cabinet for nuclear power engineering - Google Patents
Metal corrugated sealing type oil storage cabinet for nuclear power engineering Download PDFInfo
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- CN219457298U CN219457298U CN202320141015.4U CN202320141015U CN219457298U CN 219457298 U CN219457298 U CN 219457298U CN 202320141015 U CN202320141015 U CN 202320141015U CN 219457298 U CN219457298 U CN 219457298U
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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
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Abstract
The utility model relates to a metal corrugated sealed oil storage cabinet for an oil immersed transformer, in particular to a metal corrugated sealed oil storage cabinet for nuclear power engineering, which comprises a metal corrugated oil storage cabinet and a corrugated core welding part arranged in the metal corrugated oil storage cabinet, wherein the corrugated core welding part comprises a corrugated core, an oil containing cavity and an oil guide seat, the oil containing cavity is fixed in the metal corrugated oil storage cabinet, the lower end of the corrugated core is fixedly connected in Cheng Youqiang, and the oil containing cavity at the periphery of the corrugated core is provided with the oil guide seat; the oil collecting monitoring alarm mechanism comprises a junction box, a micro switch, an oil collecting pipe, a buoy, an electric oil discharging valve and an oil discharging pipe, wherein the micro switch is arranged above the inside of the oil collecting pipe, the buoy is arranged in the oil collecting pipe, the upper end of the oil collecting pipe is communicated with the oil guiding seat, the lower end of the oil collecting pipe is connected with one end of the electric oil discharging valve, and the other end of the electric oil discharging valve is connected with the oil discharging pipe. The utility model can realize the automatic alarm function, and automatically sends out an alarm signal to prompt operation maintenance personnel to observe the oil leakage condition on site when the oil collecting pipe is filled with leaked transformer oil.
Description
Technical Field
The utility model relates to a metal corrugated sealed oil storage cabinet for an oil immersed transformer, in particular to a metal corrugated sealed oil storage cabinet for nuclear power engineering.
Background
Because the nuclear power engineering has the specificity, all products applied to the nuclear power engineering not only meet the requirement of service performance, but also have important consideration on the safety and reliability. The metal corrugated sealed oil storage cabinet is taken as an important component of the power transformer, and the safety of the metal corrugated sealed oil storage cabinet directly influences the operation of the transformer, thereby influencing the whole power system. Therefore, if the metal bellows seal type oil storage cabinet is to be applied to nuclear power engineering, the safety of the metal bellows seal type oil storage cabinet must be further improved.
One common potential safety hazard of a metal corrugated sealed oil storage cabinet is leakage of a metal corrugated core body. Because of the structural characteristics of the metal corrugated sealed oil storage cabinet, the metal corrugated core body is a sealed elastomer, and transformer oil is filled in the metal corrugated core body. Through many years of operation, the internal oil type metal corrugated oil storage cabinet has the probability of metal corrugated core leakage due to the factors of environmental corrosion, aging of sealing rubber gaskets and the like. The phenomenon is light, which affects the appearance of the product and causes pollution, and heavy phenomenon can cause oil shortage of the oil storage cabinet, which affects the integral safe operation of the transformer.
The utility model patent with the publication number of CN206961637U in 2/2018 discloses a metal corrugated oil storage cabinet with an oil collection monitoring function, and provides an oil collection monitoring device which is arranged on the metal corrugated oil storage cabinet and can collect leaked transformer oil and introduce the transformer oil into a transparent glass tube; when transformer oil exists in the glass tube, transformer oil leakage of the oil storage cabinet can be judged. However, if the product is to be applied to nuclear power engineering, further researches prove that the structure mentioned in the product has the following defects:
(1) The oil collection monitoring device is only manually observed by maintenance personnel, has no automatic alarm function, cannot send an alarm signal, and is easy to cause information delay;
(2) The glass tube for observation is not protected and is easy to damage in the transportation process;
(3) The glass tube has smaller volume, is easy to fill after oil leakage is collected, can not automatically discharge oil, needs manual oil discharge, can not be used in a reciprocating manner automatically, and has low automation degree.
Disclosure of Invention
Aiming at the problems existing in the application of the existing metal corrugated oil storage cabinet to the nuclear power engineering, the utility model aims to provide the metal corrugated sealed oil storage cabinet with the oil collection monitoring alarm mechanism for the nuclear power engineering.
The aim of the utility model is realized by the following technical scheme:
the corrugated oil storage tank comprises a metal corrugated oil storage tank and a corrugated core welding part arranged in the metal corrugated oil storage tank, wherein the corrugated core welding part comprises a corrugated core, an oil containing cavity and an oil guide seat, the Cheng Youqiang is fixed in the metal corrugated oil storage tank, the lower end of the corrugated core is fixedly connected in Cheng Youqiang, and the oil containing cavity at the periphery of the corrugated core is provided with the oil guide seat for discharging oil outwards; the oil collecting monitoring alarm mechanism comprises a junction box, a micro switch, an oil collecting pipe, a buoy, an electric oil discharging valve and an oil discharging pipe, wherein the micro switch is arranged above the inside of the oil collecting pipe, the buoy is arranged in the oil collecting pipe, the upper end of the oil collecting pipe is communicated with an oil guiding seat, the lower end of the oil collecting pipe is connected with one end of the electric oil discharging valve, and the other end of the electric oil discharging valve is connected with the oil discharging pipe.
Wherein: one side of the electric oil drain valve is provided with a time relay connected with the electric oil drain valve.
The electric oil drain valve is connected with a junction box arranged on the oil collecting pipe through a time relay.
And a controller is arranged in the junction box, and the time relay is connected with the controller.
The oil collecting pipe is provided with a sealed insulating guide post, one end of the sealed insulating guide post is positioned inside the oil collecting pipe, the other end of the sealed insulating guide post is positioned outside the oil collecting pipe, the other end of the sealed insulating guide post is externally covered with a junction box fixed on the oil collecting pipe, a controller is arranged in the junction box, and the micro switch is connected with the controller.
The upper end and the lower end of the oil collecting pipe are respectively and hermetically connected with an oil collecting pipe flange, the micro switch is fixed on the inner side of the upper end oil collecting pipe flange, and the electric oil discharge valve is arranged on the lower part of the lower end oil collecting pipe flange.
A plurality of protection frames are arranged between the oil collecting pipe flanges at the upper end and the lower end along the circumferential direction, and the upper end and the lower end of the protection frames are respectively fixedly connected with the oil collecting pipe flanges at the upper end and the lower end.
When the number of the corrugated cores is one or more, the corrugated cores share one oil containing cavity, or the lower ends of the corrugated cores are respectively fixedly connected with one oil containing cavity, each Cheng Youqiang is provided with an oil guide seat, and each oil guide seat is respectively communicated with the inside of the oil collecting pipe through an oil guide pipe.
The oil containing cavity is surrounded by a coaming and a core sealing plate, the core sealing plate is fixedly connected to the bottom surface in the metal corrugated oil storage cabinet, and the coaming is vertically arranged at the outer edge of the core sealing plate; the oil guide seat is welded at the lower part of the core sealing plate, the upper end of the oil guide seat penetrates through the core sealing plate and then stretches into the oil containing cavity at the periphery of the corrugated core, and the lower end of the oil guide seat is communicated with the inside of the oil collecting pipe.
The center of the oil guide seat is provided with a through hole along the length direction, and the upper end of the oil guide seat extending into the oil containing cavity is provided with an oil drain hole communicated with the through hole.
The utility model has the advantages and positive effects that:
1. the utility model can realize the automatic alarm function, and automatically sends out an alarm signal to prompt operation maintenance personnel to observe the oil leakage condition on site when the oil collecting pipe is filled with leaked transformer oil.
2. According to the utility model, the protection frame is arranged outside the oil collecting pipe, so that the risk of damage in the transportation process is effectively relieved.
3. The utility model can realize the automatic oil discharging function, the electric oil discharging valve immediately and automatically opens the oil discharging function after receiving the alarm signal, and the oil discharging function lasts for 3 to 5 minutes, thereby ensuring the complete discharge of the transformer oil flowing into the oil collecting pipe.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic structural view of a corrugated core welded component of the present utility model;
FIG. 3 is an enlarged view of a portion of the corrugated core body welded component and oil collection monitoring alarm mechanism of FIG. 1;
FIG. 4 is a schematic diagram of the oil collection monitoring alarm mechanism of the present utility model;
FIG. 5 is a schematic diagram of the structure of the oil collection monitoring alarm mechanism in an alarm state;
wherein: 1 is a metal corrugated oil storage cabinet, 2 is a corrugated core welding part, 201 is a coaming, 202 is a core sealing plate, 203 is a corrugated core, 204 is an oil guide seat, 205 is an oil drain hole, 3 is an oil collection monitoring alarm mechanism, 301 is an oil guide pipe, 302 is a three-way valve, 303 is a junction box, 304 is a sealed insulating guide post, 305 is a micro switch, 306 is an oil collection pipe, 307 is a protection frame, 308 is a buoy, 309 is a sealing gasket, 310 is an oil collection pipe flange, 311 is an electric oil drain valve, 312 is a time relay, 313 is an oil drain pipe, and 314 is an accident oil pool.
Detailed Description
The utility model is described in further detail below with reference to the accompanying drawings.
As shown in fig. 1, the utility model comprises a metal corrugated oil storage cabinet 1, a corrugated core welding part 2 and an oil collection monitoring alarm mechanism 3, wherein the corrugated core welding part 2 is arranged in the metal corrugated oil storage cabinet 1, and the oil collection monitoring alarm mechanism 3 positioned outside the metal corrugated oil storage cabinet 1 is arranged at the lower part of the corrugated core welding part 2.
As shown in fig. 2 and 3, the corrugated core welding component 2 of the present embodiment includes a corrugated core 203, an oil containing cavity and an oil guiding seat 204, the oil containing cavity is fixed inside the metal corrugated oil storage cabinet 1, the lower end of the corrugated core 203 is fixedly connected in Cheng Youqiang, and the oil containing cavity at the periphery of the corrugated core 203 is provided with the oil guiding seat 204 for discharging oil outwards. Cheng Youqiang of this embodiment is enclosed by a coaming 201 and a core sealing plate 202, the core sealing plate 202 is welded to the bottom surface in the metal corrugated oil conservator 1, the lower end of the corrugated core 203 is welded to the core sealing plate 202, the coaming 201 is vertically arranged at the outer edge of the core sealing plate 202, and the coaming 201 can be in an integral structure with the core sealing plate 202 or be vertically welded to the core sealing plate 202; the coaming 201 of this embodiment is welded perpendicularly to the outer edge of the core seal plate 202, and forms a oil accommodating cavity with the core seal plate 202. The oil guiding seat 204 is welded to the lower part of the core sealing plate 202, the upper end of the oil guiding seat 204 penetrates through the core sealing plate 202 and then stretches into the oil containing cavity at the periphery of the corrugated core 203, and the lower end of the oil guiding seat 204 is communicated with the inside of the oil collecting pipe 306.
The external dimension of the core sealing plate 202 of this embodiment is 20-40 mm larger than the circumference of the corrugated core 203.
In this embodiment, a through hole is formed in the center of the oil guiding seat 204 along the length direction, and an oil drain hole 205 communicating with the through hole is formed at the upper end of the oil guiding seat 204 extending into the oil accommodating cavity. Two oil drain holes are drilled on the upper and lower parts of the oil guide seat 204 extending into the oil containing cavity, the size of the holes is phi 2 mm-phi 4mm, the distance between the lower holes and the upper plane of the core sealing plate 202 is 10-20 mm, and the hole distance between the upper holes and the lower holes is 6-12 mm.
The oil filling amount of the oil filling cavity of the embodiment is 3% -5% of the total oil filling amount of the corrugated core body 203, and the height of the coaming 201 is designed according to the requirement.
The number of the corrugated cores 203 may be one or more, when the number of the corrugated cores 203 is plural, each corrugated core 203 shares one oil containing cavity, or the lower end of each corrugated core 203 is fixedly connected with one oil containing cavity, each oil containing cavity is provided with an oil guiding seat 204, and each oil guiding seat 204 is respectively communicated with the interior of the oil collecting pipe 306 through an oil guiding pipe 301. The number of the corrugated cores 203 in the embodiment is two, and the lower end of each corrugated core 203 is fixed with one oil containing cavity; the oil collecting pipe 306 is provided with a three-way valve 302, and the two oil guide seats 204 on the two oil holding cavities are respectively connected with the other two interfaces of the three-way valve 302 through the oil guide pipe 301.
As shown in fig. 3 and 4, the oil collecting monitoring and alarming mechanism 3 of the present embodiment includes a junction box 303, a micro switch 305, an oil collecting pipe 306, a float 308, an electric oil drain valve 312 and an oil drain pipe 313, wherein the micro switch 305 is installed above the oil collecting pipe 306, the float 308 is disposed in the oil collecting pipe 306, the upper end of the oil collecting pipe 306 is communicated with the oil guiding seat 204, the lower end of the oil collecting pipe 306 is connected with one end of the electric oil drain valve 311, and the other end of the electric oil drain valve 311 is connected with the oil drain pipe 313.
Sealing washers 309 are installed at the upper and lower ends of the oil collecting pipe 306 in this embodiment, the upper and lower ends of the oil collecting pipe 306 are connected with oil collecting pipe flanges 310 through the sealing washers 309 in a sealing manner, and one interface of the three-way valve 302 is communicated with the oil collecting pipe flanges 310 at the upper end. The micro switch 305 is fixed to the inner side of the upper header flange 310, and the electric oil discharge valve 311 is installed to the lower portion of the lower header flange 310. A plurality of protection frames 307 are arranged between the oil collecting pipe flanges 310 at the upper end and the lower end along the circumferential direction, so that the oil collecting pipe is prevented from being damaged in the transportation and carrying processes, and the upper end and the lower end of the protection frames 307 are fixedly connected with the oil collecting pipe flanges 310 at the upper end and the lower end respectively.
The capacity of the oil collecting pipe 306 of this embodiment is 2 to 5L. The four protective frames 307 of the present embodiment are uniformly arranged along the circumferential direction of the oil collecting pipe 306; the protecting frame 307 may be a plate bending piece or a round steel structure. The float 308 of this embodiment is a hollow sealed metal (e.g., stainless steel) structure, or an oil resistant nonmetallic (e.g., ceramic) structure.
The upper oil collecting pipe flange 310 of this embodiment is provided with a sealing insulation guiding post 304, one end of the sealing insulation guiding post 304 is located inside the oil collecting pipe 306, the other end is located outside the oil collecting pipe 306, and the other end of the sealing insulation guiding post 304 is covered with a junction box 303 fixed on the oil collecting pipe 306.
In this embodiment, a time relay 312 connected to the electric oil discharge valve 311 is provided on one side of the electric oil discharge valve 311, and the electric oil discharge valve 311 is connected to the junction box 303 through the time relay 312. The controller is arranged in the junction box 303, the time relay 312 and the micro switch 305 are respectively connected with the controller, and the connection between the time relay 312 and the micro switch 305 and the controller is in the prior art, which is not described herein.
The micro switch 306 of this embodiment is a commercially available product, and is purchased from Oncomelania, inc. and has a model number of V-105-1A4-T. The electric oil drain valve 311 of this embodiment is commercially available and is purchased from Nanjing Fang Wei valve Inc. under the model number FVQ21.
The working principle of the utility model is as follows:
as shown in fig. 5, if oil leakage occurs in the corrugated core 203, transformer oil leaks into the oil containing cavity and flows into the oil collecting pipe 306 through the oil drain hole 205, the oil guide pipe 301 and the three-way valve 302 on the oil guide seat 204; as the oil leakage amount in the oil collecting pipe 306 increases, the float 308 rises to the position of the micro switch 305 to trigger the micro switch 305 to alarm; after the controller receives the alarm signal of the micro switch 305, the electric oil discharge valve 311 is controlled to be opened, the electric oil discharge valve 311 is kept for 3-5 minutes by the time relay 312, and the leaked transformer oil in the oil collecting pipe 306 is completely discharged, and the transformer oil is discharged to the accident oil pool 314 by the oil discharge pipe 313.
Claims (10)
1. The utility model provides a metal ripple sealed oil conservator for nuclear power engineering, includes metal ripple oil conservator and installs in the inside ripple core welding part of metal ripple oil conservator, ripple core welding part includes ripple core, flourishing oil pocket and oil guide seat, cheng Youqiang is fixed in the inside of metal ripple oil conservator, ripple core lower extreme rigid coupling is in Cheng Youqiang, the oil guide seat of outwards discharging oil is installed to the flourishing oil pocket of ripple core periphery; the method is characterized in that: still include collection oil monitoring alarm mechanism (3), collection oil monitoring alarm mechanism (3) include terminal box (303), micro-gap switch (305), collection oil pipe (306), cursory (308), electronic oil drain valve (311) and oil drain pipe (313), micro-gap switch (305) are installed in the top in collection oil pipe (306), cursory (308) set up in collection oil pipe (306), the upper end and the oil guide seat (204) intercommunication of collection oil pipe (306), the lower extreme of collection oil pipe (306) links to each other with the one end of electronic oil drain valve (311), the other end of electronic oil drain valve (311) is connected with oil drain pipe (313).
2. The metal corrugated sealed oil conservator for nuclear power engineering according to claim 1, wherein: one side of the electric oil discharge valve (311) is provided with a time relay (312) connected with the electric oil discharge valve (311).
3. The metal corrugated sealed oil conservator for nuclear power engineering according to claim 2, wherein: the electric oil discharge valve (311) is connected with a junction box (303) arranged on the oil collecting pipe (306) through a time relay (312).
4. A metal bellows seal oil conservator for nuclear power projects as claimed in claim 3, wherein: a controller is arranged in the junction box (303), and the time relay (312) is connected with the controller.
5. The metal corrugated sealed oil conservator for nuclear power engineering according to claim 1, wherein: be equipped with sealed insulating guide post (304) on oil collecting pipe (306), the one end of sealed insulating guide post (304) is located oil collecting pipe (306) inside, and the other end is located oil collecting pipe (306) outside, the other end dustcoat of sealed insulating guide post (304) has terminal box (303) of fixing on oil collecting pipe (306), be equipped with the controller in terminal box (303), micro-gap switch (305) are connected with the controller.
6. The metal corrugated sealed oil conservator for nuclear power engineering according to claim 1, wherein: the upper end and the lower end of the oil collecting pipe (306) are respectively and hermetically connected with an oil collecting pipe flange (310), the micro switch (305) is fixed on the inner side of the upper end oil collecting pipe flange (310), and the electric oil discharge valve (311) is arranged on the lower part of the lower end oil collecting pipe flange (310).
7. The metal corrugated sealed oil conservator for nuclear power engineering according to claim 6, wherein: a plurality of protection frames (307) are arranged between the oil collecting pipe flanges (310) at the upper end and the lower end along the circumferential direction, and the upper end and the lower end of the protection frames (307) are fixedly connected with the oil collecting pipe flanges (310) at the upper end and the lower end respectively.
8. The metal corrugated sealed oil conservator for nuclear power engineering according to claim 1, wherein: the corrugated core body (203) is one or more, when the corrugated core bodies (203) are multiple, each corrugated core body (203) shares one oil containing cavity, or the lower end of each corrugated core body (203) is fixedly connected with one oil containing cavity respectively, each Cheng Youqiang is provided with an oil guide seat (204), and each oil guide seat (204) is communicated with the inside of the oil collecting pipe (306) through an oil guide pipe (301) respectively.
9. The metal corrugated sealed oil conservator for nuclear power engineering according to claim 1, wherein: the oil containing cavity is surrounded by a coaming (201) and a core sealing plate (202), the core sealing plate (202) is fixedly connected to the bottom surface in the metal corrugated oil storage cabinet (1), and the coaming (201) is vertically arranged at the outer edge of the core sealing plate (202); the oil guide seat (204) is welded at the lower part of the core sealing plate (202), the upper end of the oil guide seat (204) penetrates through the core sealing plate (202) and then stretches into the oil containing cavity at the periphery of the corrugated core (203), and the lower end of the oil guide seat (204) is communicated with the inside of the oil collecting pipe (306).
10. The metal corrugated sealed oil conservator for nuclear power engineering according to claim 9, wherein: the center of the oil guide seat (204) is provided with a through hole along the length direction, and the upper end of the oil guide seat (204) extending into the oil containing cavity is provided with an oil drain hole (205) communicated with the through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320141015.4U CN219457298U (en) | 2023-02-03 | 2023-02-03 | Metal corrugated sealing type oil storage cabinet for nuclear power engineering |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320141015.4U CN219457298U (en) | 2023-02-03 | 2023-02-03 | Metal corrugated sealing type oil storage cabinet for nuclear power engineering |
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| CN219457298U true CN219457298U (en) | 2023-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202320141015.4U Active CN219457298U (en) | 2023-02-03 | 2023-02-03 | Metal corrugated sealing type oil storage cabinet for nuclear power engineering |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117393280A (en) * | 2023-12-13 | 2024-01-12 | 沈阳兆源电力设备有限公司 | Metal corrugated oil storage cabinet |
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2023
- 2023-02-03 CN CN202320141015.4U patent/CN219457298U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117393280A (en) * | 2023-12-13 | 2024-01-12 | 沈阳兆源电力设备有限公司 | Metal corrugated oil storage cabinet |
| CN117393280B (en) * | 2023-12-13 | 2024-02-09 | 沈阳兆源电力设备有限公司 | Metal corrugated oil storage cabinet |
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