CN108806932B - High-temperature flame-retardant combined valve control system of accident oil discharge pipeline of extra-high voltage transformer - Google Patents
High-temperature flame-retardant combined valve control system of accident oil discharge pipeline of extra-high voltage transformer Download PDFInfo
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- CN108806932B CN108806932B CN201810646985.3A CN201810646985A CN108806932B CN 108806932 B CN108806932 B CN 108806932B CN 201810646985 A CN201810646985 A CN 201810646985A CN 108806932 B CN108806932 B CN 108806932B
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- 239000003063 flame retardant Substances 0.000 title claims abstract description 11
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/221—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves specially adapted operating means therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/041—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
- H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F30/00—Fixed transformers not covered by group H01F19/00
- H01F30/06—Fixed transformers not covered by group H01F19/00 characterised by the structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
- H01F2027/404—Protective devices specially adapted for fluid filled transformers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
- H01F2027/406—Temperature sensor or protection
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention provides a high-temperature flame-retardant combined valve control system of an accident oil discharge pipeline of an extra-high voltage transformer, which relates to the technical field of electric power systems, and aims to realize the blocking of the oil discharge pipeline at a low oil level and the oil discharge of the pipeline at a high oil level by arranging a pipeline comprehensive control mechanism and a one-way valve, so that the oil level in the oil discharge pipeline is managed and controlled in real time; according to the invention, the pipeline is communicated by rotating the valve in the annular cross section of the oil discharge pipe left and right around the shaft; the oil discharging channel of the transformer is of a circular tube structure, so that when the transformer oil flows, the upper layer oil layer of the oil tank is prevented from igniting and entering the pipeline, the diffusion of fire is reduced, and meanwhile, the adjacent oil tank outside is prevented from being strung into the oil tank in the opposite direction, so that the structure is more reasonable and safer; through setting up the filter screen for filter the transformer oil that extra-high voltage transformer flows, avoid impurity outflow in it to block up valve body and pipeline at the back, set up more rationally.
Description
Technical Field
The invention relates to the technical field of power systems, in particular to a high-temperature flame-retardant combined valve control system of an accident oil discharge pipeline of an extra-high voltage transformer.
Background
In China, the extra-high voltage refers to the voltage level of direct current of +/-800 kilovolts and alternating current of 1000 kilovolts or more. Compared with the conventional transformer, the common extra-high voltage transformer (such as an oil-immersed transformer) has the special structure, but the extra-high voltage transformer is easy to oxidize in the use of the extra-high voltage transformer for a long time and a long time. Once the insulating layer of the primary coil or the secondary coil is aged and damaged or the transformer is overloaded, breakdown and discharge phenomena are generated in the transformer oil, so that the temperature of the transformer oil is rapidly increased and gasified, the gasified transformer oil can expand the shell, and explosion can occur when the shell cannot bear huge pressure inside. After the shell is burst, the iron core, the primary coil and the secondary coil in the transformer can quickly generate heat and generate electric arcs because no transformer oil is used for radiating, and the electric arcs easily ignite residual high-temperature transformer oil, so that serious safety accidents such as fire disaster and the like are caused.
At present, after the existing transformer fires, both heavy gas and a thermosensitive detector of a transformer top cover act; the signal sent by the thermosensitive detector enables the oil discharging system to discharge a large amount of transformer oil, the transformer oil starts to fall into the accumulated oil discharging pool below the transformer body respectively, and then the accumulated oil directly flows into the accident oil discharging pool through the oil discharging pipe respectively.
Disclosure of Invention
The invention aims to provide a high-temperature flame-retardant combined valve control system of an accident oil discharge pipeline of an extra-high voltage transformer, which reduces the oil discharge area of an upper layer oil layer in the oil discharge pipeline, and thereby reduces the diffusion of fire, and has more reasonable and safer structural arrangement.
In order to achieve the above purpose, the invention is realized by the following technical scheme:
the high-temperature flame-retardant combined valve control system of the accident oil discharge pipeline of the extra-high voltage transformer comprises the extra-high voltage transformer, an oil discharge pipe, a one-way valve control device and an accident oil discharge pool; the extra-high voltage transformers discharge a large amount of transformer oil due to faults, respectively fall into oil accumulation and discharge tanks below the transformer body, and respectively collect the transformer oil into the accident oil discharge tanks through oil discharge pipes; the one-way valve control device comprises a temperature sensor, a pipeline one-way valve and a backflow preventer; the temperature sensor, the pipeline one-way valve and the backflow preventer are sequentially arranged on the oil discharge pipe; the temperature sensor is arranged at the top of the oil drain pipe, so that the detection of the top temperature in the oil drain pipe is realized; the hemispherical valve of the pipeline one-way valve takes the central axis of the pipeline of the oil discharge pipe in the height direction as a rotating shaft, so that the oil discharge pipe can be blocked and communicated by rotating around the rotating shaft.
Further, the pipeline one-way valve comprises a floating ball, a rotating motor, a change-over switch, a first rod, a second rod and a valve; the valve is fixedly connected with an output rotating shaft of the rotating motor, and the valve is driven by the rotating motor to rotate in the oil drain pipe; the floating ball is arranged in the oil drain pipe and floats on the oil surface in the oil drain pipe; the change-over switch is electrically connected with the rotating motor and is communicated with a circuit of the rotating motor to realize the rotation of the rotating motor; the lower end of the first rod penetrates through the upper pipe wall of the oil drain pipe and extends inwards to be fixedly connected with the floating ball, so that the first rod can move up and down on the perforation of the oil drain pipe through the floating ball in an up-and-down floating mode; the upper end of the first rod is also fixedly provided with a contact corresponding to the change-over switch; the change-over switch is fixedly arranged on the second rod; the second rod is fixedly arranged on the shell of the rotating motor.
Further, the diameter of the valve is matched with the inner diameter of the oil drain pipe in size; the valve consists of a hemispherical surface and a circular section.
Further, the valve in the annular cross section of the oil drain pipe rotates left and right around the shaft to realize the communication of the pipeline, so that the opening of the valve in the sector in the pipeline is realized.
Further, a filter screen is also arranged; the filter screen is arranged between the oil drain pipe and the extra-high voltage transformer.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the pipeline comprehensive control mechanism and the one-way valve are arranged to realize the blocking of the oil discharge pipe at low oil level and the pipeline opening oil discharge at high oil level, so that the oil level in the oil discharge pipe is managed and controlled in real time.
2. According to the invention, the pipeline is communicated by rotating the valve in the annular cross section of the oil discharge pipe left and right around the shaft; and the channel of transformer oil extraction is pipe column structure for transformer oil has stopped the upper strata oil reservoir of oil tank and has caught fire and get into the pipeline when flowing, reduces the diffusion of fire, and the opposite direction stops outside adjacent oil tank cluster to go into in this oil tank simultaneously, and the structure setting is more reasonable, safer.
3. According to the invention, the filter screen is arranged for filtering the transformer oil flowing out of the extra-high voltage transformer, so that impurities in the transformer oil are prevented from flowing out to block the valve body and the pipeline at the back, and the arrangement is more reasonable.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is a schematic view of a partial structure of an oil drain pipe according to the present invention;
FIG. 3 is a schematic view of a valve according to the present invention in a blocking state;
FIG. 4 is a schematic view of the structure of the valve of the present invention in a fan communication state;
FIG. 5 is a cross-sectional view of FIG. 4 in accordance with the present invention;
FIG. 6 is a schematic view of the structure of the check valve of the present invention;
fig. 7 is a schematic view of an installation structure of the backflow preventer of the present invention;
the reference numerals in the figures illustrate:
1. an extra-high voltage transformer; 2. an oil drain pipe; 3. a one-way valve control device; 31. a temperature sensor; 32. a pipeline one-way valve; 321. a floating ball; 322. a rotating motor; 3221. a rotating shaft; 323. a change-over switch; 324. a first rod; 3241. a contact; 325. a second rod; 326. a valve; 33. a backflow preventer; 4. an accident oil drain tank; 5. a filter screen; 6. an oil storage tank; 7. a detector; 8. a check valve; 9. and an oil accumulation and discharge pool.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments of the present invention will be clearly and completely described in the following in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention is further described with reference to fig. 1 to 7:
referring to fig. 1 and 2, the high-temperature flame-retardant combined valve control system of the accident oil discharge pipeline of the extra-high voltage transformer comprises an extra-high voltage transformer 1, an oil discharge pipe 2, a one-way valve control device 3 and an accident oil discharge pool 4; a plurality of extra-high voltage transformers 1 discharge a large amount of transformer oil due to faults, respectively fall into oil accumulation and discharge tanks 9 below the transformer body, and respectively collect the transformer oil into an accident oil discharge tank 4 through oil discharge pipes 2; the one-way valve control device 3 comprises a temperature sensor 31, a pipeline one-way valve 32 and a backflow preventer 33; the temperature sensor 31, the pipe one-way valve 32 and the backflow preventer 33 are sequentially arranged on the oil drain pipe 2; the temperature sensor 31 is arranged at the top of the oil drain pipe 2, so that the detection of the top temperature in the oil drain pipe 2 is realized; the hemispherical valve 326 of the pipe unidirectional valve 32 takes the central axis of the pipe of the oil drain pipe 2 in the height direction as a rotating shaft, thereby realizing the left and right rotation of the oil drain pipe 2 around the shaft to realize the blocking and the communication of the oil drain pipe 2;
according to the invention, the pipeline is communicated by rotating the valve in the annular cross section of the oil discharge pipe left and right around the shaft; and the channel of transformer oil extraction is pipe column structure for transformer oil has stopped the upper strata oil reservoir of oil tank and has caught fire and get into the pipeline when flowing, reduces the diffusion of fire, and the opposite direction stops outside adjacent oil tank cluster to go into in this oil tank simultaneously, and the structure setting is more reasonable, safer.
The pipeline one-way valve 32 comprises a floating ball 321, a rotating motor 322, a change-over switch 323, a first rod 324, a second rod 325 and a valve 326; the valve 326 is fixedly connected with an output rotating shaft 3221 of the rotating motor 322, and the valve 326 is driven by the rotating motor 322 to rotate in the oil drain pipe 2; the floating ball 321 is arranged in the oil drain pipe 2 and floats on the oil surface in the oil drain pipe 2; the change-over switch 323 is electrically connected with the rotating motor 322 and is connected with a circuit through the rotating motor 322 to realize the rotation of the rotating motor 322; the lower end of the rod one 324 penetrates through the upper pipe wall of the oil drain pipe 2 and extends inwards to be fixedly connected with the floating ball 321, so that the rod one 324 can move up and down on the perforation of the oil drain pipe 2 through the up and down floating of the floating ball 321; the upper end of the first rod 324 is also fixedly provided with a contact 3241 corresponding to the change-over switch 323; when the oil is not discharged and the oil level is lowered at ordinary times, the floating ball 321 descends, so that the first rod 324 moves downwards and pulls the contact 3241 downwards to be separated from the fixed contact seat of the change-over switch 323, the pipeline one-way valve 32 is restored to be normal, and the valve 326 seals the oil discharge pipe 2 to disconnect an oil path; when the oil level rises, the floating ball 321 rises, so that the rod one 324 moves upwards to connect the contact 3241 with the static contact seat of the change-over switch 323, and the rotation of the pipeline one-way valve 32 is realized to open the valve 326 to connect an oil path; the change-over switch 323 is fixedly arranged on the second rod 325; the second lever 325 is fixedly arranged on the casing of the rotating motor 322; the pipeline comprehensive control mechanism and the one-way valve are arranged to realize the blocking of the oil discharge pipe at low oil level and the oil discharge of the pipeline at high oil level, and the oil level in the oil discharge pipe is monitored by adjusting the floating ball along with the oil level, so that the oil level in the oil discharge pipe is managed and controlled in real time.
Preferably, the valve 326 may also be configured as a butterfly valve to block and communicate the conduit.
Preferably, the first rod 324 and the second rod 325 are fixed at the side end of the oil delivery pipe in a flange connection mode. In order to prevent leakage, rod one 324 has a number of reed switches inside and rod two 325 has a number of reed switches inside. The first rod of the reed pipe is a magnetic element, the first rod is penetrated with the floating ball, the floating ball is hollow, an annular magnet is arranged in the floating ball, when the transformer oil can not fill a pipeline, the floating ball sinks, so that a contact of the reed pipe is disconnected, a circuit of the reed pipe, an electric change-over switch and a rotating motor is disconnected, the valve is restored to an initial closed state, and an oil discharge pipe is blocked; when oil is full (i.e. no open fire), the floating ball rises to the top change-over switch, and the contact of the reed pipe is contacted and closed due to the adsorption action of the magnet, so that the circuit of the reed pipe, the electric change-over switch and the rotating motor is closed, the rotating motor drives the valve to rotate and open, and the oil drain pipe is communicated.
Referring to fig. 3, 4 and 5, the diameter of the valve 326 is matched with the inner diameter of the oil drain pipe 2, so that the sealing of the oil drain pipe 2 is realized when the valve 326 formed by a hemispherical surface and a circular section is tightly adhered to the inner circumferential side wall of the pipeline of the oil drain pipe 2 by rotating the valve 326; rotating the valve 326 to incline the circular section relative to the length direction of the pipeline to realize the front-back communication of the oil discharge pipe 2 and the pipeline communication;
preferably, the valve 326 is of hemispherical configuration.
The valve 326 in the annular cross section of the oil discharge pipe 2 rotates left and right around the shaft to realize the communication of the pipeline; the fan surface of the valve 326 in the pipeline is opened, the valve 326 is opened and closed on one side, the stress of the valve 326 is smaller, and the valve 326 is closed more conveniently and rapidly; the channel of the transformer oil is of a semicircular columnar structure (the semicircular opening channel is the largest, the circular section can be slightly inclined to form a structure similar to a horn shape, the flow and the flow speed can be adjusted by adjusting the channel in sequence), so that the area of the upper layer oil is smaller when the transformer oil flows, the area of the upper surface layer oil in the oil drain pipe 2 is greatly reduced, and the open area of a pipeline is reduced when the oil is conveyed to an accident oil pool, so that most of oil is completely filled in the semicircular channel, the fire separation of an in-situ condition can be realized, the ignition speed of the upper layer oil layer is completely slowed down, and the structure is more reasonable.
A filter screen 5 is also arranged; the filter screen 5 is arranged between the oil drain pipe 2 and the extra-high voltage transformer 1; the device is used for filtering the transformer oil flowing out of the extra-high voltage transformer 1, avoiding impurities in the transformer oil flowing out to block the valve body and the pipeline at the back, being reasonable in arrangement and greatly improving the effective use of the valve body and the pipeline.
With reference to fig. 6, an oil storage tank 6 is also provided; the oil storage tank 6 is communicated with the oil tank of the extra-high voltage transformer 1 through a gravity check valve 8 and is used for oil transportation of the transformer.
The top of the extra-high voltage transformer 1 is also provided with a detector 7 which is matched with the electric fire monitoring system for practical use; the detector 7 is arranged on the extra-high voltage transformer 1.
Preferably, an electrical fire monitoring system is further included, and the electrical fire monitoring system is electrically connected to the temperature sensor 31. The electric fire monitoring system belongs to fire protection products, 3C authentication (namely CCCF authentication) is forced, and all products must execute the GB14287-2014 standard. The electric fire monitoring system is a system for monitoring electric fire by detecting residual current of an electric circuit. When in practical application, the system is matched with a residual current action protector (RCD), the residual current action protector is generally arranged on a load terminal, is mainly used for timely cutting off a power supply when a person gets an electric shock, prevents electric shock accidents from happening, an electric fire monitoring system is arranged at a distribution room and a distribution box, detects residual currents of a power supply line trunk line and a secondary trunk line in real time, immediately sends out an audible and visual alarm signal if exceeding a residual current alarm value, prompts maintenance, is mainly used for preventing electric fire caused by electric leakage, and can form a complete protection system for 'integral monitoring and partial tripping' of the electric leakage by matching the residual current action protector with the power supply;
the electrical fire monitoring system is connected with the temperature sensor; when the parameters of current, temperature and the like in the electrical equipment are abnormal or abrupt change, the terminal detecting head (such as a residual current transformer, a temperature sensor and the like) collects the information by utilizing the electromagnetic field induction principle and the change of the temperature effect, transmits the information to the monitoring detector, analyzes and judges the amplitude of the change by amplifying, A/D converting and CPU, compares the amplitude with an alarm set value, transmits an alarm signal once exceeding the set value, and simultaneously transmits the alarm signal to the monitoring equipment, and further recognizes and judges the alarm signal by the monitoring equipment. And the operator on duty can quickly check and process the accident scene according to the displayed information and send the alarm information to the centralized control console.
Referring to fig. 7, the backflow preventer 33 may be a DF41X HS41X backflow preventer.
The change-over switch 323 is used for switching on and off the circuit infrequently, switching on the power supply and the load, measuring the three-phase voltage, and controlling the forward and reverse rotation of the small-capacity asynchronous motor.
When a large amount of transformer oil is discharged (129 tons and 47 tons of adjustment and compensation of a transformer in a Huainan station A phase), if the transformer oil (A phase) is discharged after an accident, the oil in the tank flows to a total accident oil storage tank through a pipeline. Because the pipelines in the accident oil drain tanks are communicated with each other and flow to the accident oil storage tank through the collecting single pipeline. The transformer oil in which the fire is present diffuses through the piping to the adjacent equipment. Therefore, the high-temperature flame-retardant combined valve control device of the main transformer (high-resistance) accident oil discharge pipeline of the ultra-high voltage Huainan station is developed, and the purposes of effectively solving the problem that the ignition transformer oil is diffused to adjacent equipment through the pipeline and protecting good equipment from being corroded by external fire sources are achieved. The invention has the advantages of simple structure, convenient installation and operation, repeated use, economy and practicability, flexible use, reasonable design, compact structure, safety and reliability and suitability for wide popularization.
It should be noted that, the specific structures of the extra-high voltage transformer, the temperature sensor, the change-over switch, the rotating motor, the backflow preventer and the electric fire monitoring system (such as the Acrel-6000 electric fire monitoring system) are all the prior art, and the rotation technology is realized by electrically connecting the change-over switch and the rotating motor, and the technology is widely applied in the field (such as CN201510121232.7 to control the stepping motor to drive the universal change-over switch to act), and can be obtained by those skilled in the art without any inventive labor, and will not be described in detail herein.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (3)
1. High temperature fire-retardant combination valve control system of extra-high voltage transformer accident oil discharge pipeline, its characterized in that: comprises an extra-high voltage transformer (1), an oil drain pipe (2), a one-way valve control device (3) and an accident oil drain tank (4); the extra-high voltage transformers (1) discharge a large amount of transformer oil due to faults, respectively fall into oil accumulation and discharge tanks (9) below the transformer body, and respectively converge the transformer oil into an accident oil discharge tank (4) through oil discharge pipes (2); the one-way valve control device (3) comprises a temperature sensor (31), a pipeline one-way valve (32) and a backflow preventer (33); the temperature sensor (31), the pipeline one-way valve (32) and the backflow preventer (33) are sequentially arranged on the oil discharge pipe (2); the temperature sensor (31) is arranged at the top of the oil drain pipe (2) so as to detect the temperature of the top in the oil drain pipe (2); the hemispherical valve (326) of the pipeline one-way valve (32) takes the central axis of the pipeline of the oil discharge pipe (2) in the height direction as a rotating shaft, so that the oil discharge pipe (2) is prevented from rotating around the rotating shaft to realize the separation and the communication of the oil discharge pipe (2);
the pipeline one-way valve (32) comprises a floating ball (321), a rotating motor (322), a change-over switch (323), a first rod (324), a second rod (325) and a valve (326); the valve (326) is fixedly connected with an output rotating shaft (3221) of the rotating motor (322), and the valve (326) is driven by the rotating motor (322) to rotate in the oil drain pipe (2); the floating ball (321) is arranged in the oil drain pipe (2) and floats on the oil surface in the oil drain pipe (2); the change-over switch (323) is electrically connected with the rotating motor (322) and is connected with a circuit through the rotating motor (322) to realize the rotation of the rotating motor (322); the lower end of the rod I (324) penetrates through the upper pipe wall of the oil drain pipe (2) and extends inwards to be fixedly connected with the floating ball (321), so that the rod I (324) can vertically move on the through hole of the oil drain pipe (2) through the up-and-down floating of the floating ball (321); the upper end of the first rod (324) is also fixedly provided with a contact (3241) corresponding to the change-over switch (323); the change-over switch (323) is fixedly arranged on the second rod (325); the second rod (325) is fixedly arranged on the shell of the rotating motor (322);
a filter screen (5) is also arranged; the filter screen (5) is arranged between the oil drain pipe (2) and the extra-high voltage transformer (1).
2. The ultrahigh voltage transformer accident oil drain pipeline high-temperature flame-retardant combined valve control system according to claim 1, wherein the system is characterized in that: the diameter of the valve (326) is matched with the inner diameter of the oil discharge pipe (2); the valve (326) is composed of a hemispherical surface and a circular cross section.
3. The ultrahigh voltage transformer accident oil drain pipeline high-temperature flame-retardant combined valve control system according to claim 1, wherein the system is characterized in that: the valve (326) in the annular cross section of the oil drain pipe (2) rotates left and right around the shaft to realize the communication of the pipeline, and the opening of the valve (326) in the sector in the pipeline is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810646985.3A CN108806932B (en) | 2018-06-22 | 2018-06-22 | High-temperature flame-retardant combined valve control system of accident oil discharge pipeline of extra-high voltage transformer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810646985.3A CN108806932B (en) | 2018-06-22 | 2018-06-22 | High-temperature flame-retardant combined valve control system of accident oil discharge pipeline of extra-high voltage transformer |
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| CN108806932A CN108806932A (en) | 2018-11-13 |
| CN108806932B true CN108806932B (en) | 2024-02-23 |
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| CN201810646985.3A Active CN108806932B (en) | 2018-06-22 | 2018-06-22 | High-temperature flame-retardant combined valve control system of accident oil discharge pipeline of extra-high voltage transformer |
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| CN114225263B (en) * | 2021-12-20 | 2022-09-13 | 湖北鄂电德力电气有限公司 | Safety equipment for distribution transformer installation site |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203134511U (en) * | 2013-04-01 | 2013-08-14 | 中国长江电力股份有限公司 | Emergency oil discharge device for transformer |
| CN204447042U (en) * | 2015-01-28 | 2015-07-08 | 保定博为世能电气有限公司 | A kind of transformer and on-load voltage regulating switch one oil-drainage nitrogen-filling fire-extinguishing |
| CN208507397U (en) * | 2018-06-22 | 2019-02-15 | 国网安徽省电力有限公司检修分公司 | Extra-high voltage transformer accident drain line high temperature flame-proof combines valve control system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10193328B2 (en) * | 2014-01-07 | 2019-01-29 | Easun-Mr Tap Changers (P) Ltd | Method and system for protecting transformers from internal fire |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203134511U (en) * | 2013-04-01 | 2013-08-14 | 中国长江电力股份有限公司 | Emergency oil discharge device for transformer |
| CN204447042U (en) * | 2015-01-28 | 2015-07-08 | 保定博为世能电气有限公司 | A kind of transformer and on-load voltage regulating switch one oil-drainage nitrogen-filling fire-extinguishing |
| CN208507397U (en) * | 2018-06-22 | 2019-02-15 | 国网安徽省电力有限公司检修分公司 | Extra-high voltage transformer accident drain line high temperature flame-proof combines valve control system |
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