CN117006288A - Extra-high voltage equipment oil gas bleeder - Google Patents
Extra-high voltage equipment oil gas bleeder Download PDFInfo
- Publication number
- CN117006288A CN117006288A CN202310914992.8A CN202310914992A CN117006288A CN 117006288 A CN117006288 A CN 117006288A CN 202310914992 A CN202310914992 A CN 202310914992A CN 117006288 A CN117006288 A CN 117006288A
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- Prior art keywords
- oil
- high voltage
- extra
- voltage equipment
- discharging
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- 238000007599 discharging Methods 0.000 claims abstract description 72
- 230000007246 mechanism Effects 0.000 claims abstract description 28
- 239000002775 capsule Substances 0.000 claims description 15
- 239000002184 metal Substances 0.000 claims description 13
- 229910052751 metal Inorganic materials 0.000 claims description 13
- 238000004891 communication Methods 0.000 claims description 4
- 230000000740 bleeding effect Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims description 2
- 230000000630 rising effect Effects 0.000 claims description 2
- 238000004880 explosion Methods 0.000 abstract description 17
- 239000000203 mixture Substances 0.000 abstract description 9
- 230000002265 prevention Effects 0.000 abstract 1
- 238000007789 sealing Methods 0.000 description 15
- 238000010586 diagram Methods 0.000 description 9
- 238000012423 maintenance Methods 0.000 description 9
- 239000004215 Carbon black (E152) Substances 0.000 description 7
- 229930195733 hydrocarbon Natural products 0.000 description 7
- 150000002430 hydrocarbons Chemical class 0.000 description 7
- 230000001681 protective effect Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005422 blasting Methods 0.000 description 2
- 230000009172 bursting Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003028 elevating effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/40—Safety valves; Equalising valves, e.g. pressure relief valves with a fracturing member, e.g. fracturing diaphragm, glass, fusible joint
- F16K17/403—Safety valves; Equalising valves, e.g. pressure relief valves with a fracturing member, e.g. fracturing diaphragm, glass, fusible joint with a fracturing valve member
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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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/02—Flanged joints the flanges being connected by members tensioned axially
- F16L23/024—Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes
-
- 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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/07—Arrangement or mounting of devices, e.g. valves, for venting or aerating or draining
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention belongs to the technical field of explosion prevention, and relates to an oil gas discharging device of extra-high voltage equipment, which comprises an oil gas discharging opening mechanism, wherein the oil gas discharging opening mechanism comprises a rupture disc holder and a rupture disc fixedly arranged on the rupture disc holder, the rupture disc holder is of a circular ring structure, one end of the oil gas discharging opening mechanism is fixedly communicated with an extra-high voltage equipment communicating mechanism, the other end of the oil gas discharging opening mechanism is fixedly communicated with a flexible discharging cavity and/or a discharging cabin, and the extra-high voltage equipment communicating mechanism is fixedly communicated with an oil tank and/or a lifting seat of the extra-high voltage equipment. According to the invention, the rupture disk is used as a pressure release opening condition, the oil gas flexible expansion space or the release channel is provided for the extra-high voltage equipment through the release cabin, the rupture disk and the release channel can be independently combined for different scenes, the oil gas release device can be arranged at an oil tank and/or a lifting seat and the like, and timely release of an insulating oil gas mixture is ensured when an unexpected situation occurs, so that an explosion accident is avoided.
Description
Technical Field
The invention belongs to the technical field of explosion protection, and particularly relates to an oil gas discharging device of extra-high voltage equipment.
Background
The extra-high voltage equipment comprises an extra-high voltage transformer, an extra-high voltage converter transformer, an extra-high voltage reactor, an extra-high voltage alternating current transformer and the like, and an insulating oil is filled in an oil tank of the extra-high voltage equipment to serve as an insulating medium. The extra-high voltage equipment generally has the outstanding characteristics of high voltage grade, large oil tank capacity, complex insulating structure, large oil charge and the like, once penetrating high-energy discharge faults occur in the equipment, the short-circuit current and the fault energy level are obviously higher than those of the conventional grade equipment, and the oil tank structure of the extra-high voltage equipment is easily torn and exploded to cause fire, so that the faults and explosion accidents of the extra-high voltage equipment must be prevented and reduced to the greatest extent.
At present, a pressure release valve is widely adopted as a pressure release device for extra-high voltage equipment, but the response and the opening time of the pressure release valve can be prolonged due to the inertia of a spring by a spring structure of the pressure release valve, so that the explosion accident can not be effectively prevented; and because the runner is complicated, the effective pressure relief area is small, and the pressure relief can not be effectively performed when the explosion fault possibly occurs in the extra-high voltage equipment. The oil tank structure of the extra-high voltage equipment is mainly rigid, has no enough flexible expansion space, can generate a large amount of gas when the explosion fault occurs, causes sudden increase of the pressure in the oil tank of the extra-high voltage equipment, and can cause tearing of the oil tank and explosion accidents once the pressure bearing capacity of the oil tank is exceeded, especially at the positions of welding lines and corner stress concentration. Therefore, it is necessary to design an oil and gas bleeder device to safely discharge the insulating oil-gas mixture in time.
Disclosure of Invention
In order to solve the technical problems, the invention provides an oil gas discharging device of extra-high voltage equipment, which adopts the following technical scheme:
the utility model provides an extra-high voltage equipment oil gas bleeder, includes oil gas bleeder opening mechanism, oil gas bleeder opening mechanism include rupture disk holder and fixed mounting rupture disk on the rupture disk holder, the rupture disk holder be the ring structure, the fixed intercommunication extra-high voltage equipment intercommunication mechanism of one end of rupture disk holder, the fixed intercommunication flexible chamber and/or the cabin of bleeding of the other end of rupture disk holder, the fixed intercommunication of oil tank and/or the rising seat of extra-high voltage equipment intercommunication mechanism.
Preferably, the ultra-high voltage equipment communication mechanism comprises a conical pipe, a valve and a connecting pipe which are fixedly communicated in sequence, wherein one end of the conical pipe with a large caliber is fixedly communicated with an oil tank and/or a lifting seat of the ultra-high voltage equipment, and the connecting pipe is fixedly communicated with the rupture disc clamp holder.
Preferably, the connecting pipe comprises a connecting pipe flange I, a connecting pipe flange II, a vacuumizing flange, an oil discharging flange and a main connecting pipe, wherein the connecting pipe flange I and the connecting pipe flange II are respectively and fixedly arranged at two ends of the main connecting pipe, the vacuumizing flange and the oil discharging flange are respectively and fixedly arranged on the upper and lower connecting pipes of the main connecting pipe, the vacuumizing flange is fixedly connected with a vacuumizing valve, the oil discharging flange is fixedly connected with an oil discharging valve, one end of the main connecting pipe is fixedly communicated with the valve, and the other end of the main connecting pipe is fixedly communicated with the rupture disc holder.
Preferably, the number of the two rupture disk holders is two, the two rupture disk holders are connected end to end, the rupture disk fixing clamp is arranged between a pair of opposed rupture disk holders, one rupture disk holder is fixedly communicated with the ultrahigh voltage equipment communication mechanism, and the other rupture disk holder is fixedly communicated with the flexible discharge cavity and/or the discharge cabin.
Preferably, the rupture disk is made of metal, and the structure of the rupture disk is any one of a positive arch, an inverted arch and a flat plate shape.
Preferably, a flexible relief cavity is fixedly arranged above the relief cabin, and the relief cabin is communicated with the flexible relief cavity.
Preferably, the flexible cavity of releasing includes cavity, outside metal protecting crust and connecting tube, outside metal protecting crust fixed mounting in the lateral wall outside of cavity of releasing, and connecting tube's one end sets up the opening intercommunication with the cavity lower surface middle part of releasing, and connecting tube's the other end sets up the opening intercommunication with the cabin upper surface middle part of releasing.
Preferably, the flexible release cavity comprises a release cavity, a pressure release capsule and a connecting pipeline, wherein the upper part of the release cavity is opened, one end of the connecting pipeline is communicated with the middle part of the lower surface of the release cavity, the other end of the connecting pipeline is communicated with the middle part of the lower surface of the pressure release capsule, and the pressure release capsule is positioned at the bottom of the pressure release cavity.
Preferably, the discharge chamber is of a pipeline structure, and the diameter of the discharge chamber is larger than that of the rupture disc.
Preferably, one end of the discharging cabin, which is far away from the rupture disc holder, is fixedly communicated with an oil guide pipeline, the flexible component is fixedly arranged between the discharging cabin and the oil guide pipeline, the flexible component is respectively communicated with the discharging cabin and the oil guide pipeline, the oil guide pipeline adopts an arc-shaped bent pipe, and one end of the oil guide pipeline, which is far away from the flexible component, is led to an oil discharging pool or leads oil to other safe places.
Preferably, the outer side of the rupture disc holder is covered with a fixed rain-proof cover.
The invention has the beneficial effects that:
the oil gas discharging device adopts the rupture disk as a pressure release opening condition, provides an oil gas flexible expansion space or an oil guide channel for the extra-high voltage equipment through the flexible discharging cabin and/or the discharging cabin, can be independently combined with the oil guide channel for different scenes, can be arranged at an oil tank and/or an elevating seat of the extra-high voltage equipment, and ensures timely discharging of an insulating oil gas mixture when accidents occur, so that the explosion accident is avoided.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, it will be apparent that the drawings in the description below are some embodiments of the invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a hydrocarbon bleed apparatus according to a first embodiment of the present invention;
FIG. 2 is a schematic view of a connecting tube according to a first embodiment of the present invention;
FIG. 3 is a cross-sectional view of a hydrocarbon bleed opening mechanism and flanges at both ends according to a first embodiment of the present invention;
FIG. 4 is a schematic view showing an end surface structure of a first piping flange according to an embodiment of the present invention;
FIG. 5 is a cross-sectional view A-A of FIG. 4, one example of the present invention;
FIG. 6 is a schematic diagram of a hydrocarbon bleed apparatus according to a second embodiment of the present invention;
FIG. 7 is a schematic illustration of the structure of one of the flexible relief cavities of the second embodiment of the present invention;
FIG. 8 is a cross-sectional view of a second embodiment of the flexible relief cavity of the present invention;
FIG. 9 is a schematic diagram of an exploded construction of a hydrocarbon bleed apparatus according to a second embodiment of the present invention during service;
FIG. 10 is a schematic illustration of the structure of a hydrocarbon bleed apparatus according to a third embodiment of the present invention;
FIG. 11 is a schematic diagram of a hydrocarbon bleed apparatus according to a fourth embodiment of the present invention;
FIG. 12 is a schematic illustration of the flexible vent lumen of the fourth embodiment of the invention after deployment;
FIG. 13 is a schematic diagram of a hydrocarbon bleed apparatus according to a fifth embodiment of the present invention;
in the figure, 1 is extra-high voltage equipment, 2 is a conical pipe, 3 is a valve, 4 is a connecting pipe, 5 is a rupture disk, 6 is a rupture disk holder, 7 is a rain cover, 8 is a discharge cabin, 9 is a flexible discharge cavity, 10 is a flexible component, 11 is a fastening screw, 12 is an oil guide pipeline, 13 is a supporting piece, 41 is a connecting pipe flange I, 42 is a connecting pipe flange II, 43 is a vacuumizing flange, 44 is an oil drain flange, 45 is a main connecting pipe, 411 is a connecting pipe flange I fixed table, 412 is a flange I sealing groove, 81 is a discharge cabin flange, 811 is a discharge cabin flange fixed table, 812 is a discharge cabin flange sealing groove, 91 is a discharge cavity, 92 is an external metal protective shell, 93 is a connecting pipeline, and 94 is a pressure relief capsule.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is apparent that the 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.
Example 1
Fig. 1 is a schematic structural diagram of an oil and gas discharging device according to a first embodiment of the present invention. The whole oil gas discharging device can be fixedly arranged at any position of the oil tank and the lifting seat of the extra-high voltage equipment, such as the top or the side wall of the oil tank, and the oil gas discharging device in the first embodiment is fixedly arranged at the side wall of the extra-high voltage equipment. The extra-high voltage equipment communication mechanism comprises a conical pipe 2, a valve 3 and a connecting pipe 4 which are fixedly communicated in sequence, wherein one end of the conical pipe 2 with larger caliber is fixedly communicated with an oil tank and/or a lifting seat of the extra-high voltage equipment 1, one end with smaller caliber is fixedly communicated with the valve 3, and the inconsistent caliber of the conical pipe 2 can play a role in reducing flow resistance. The valve 3 is provided with valve connecting flanges with integrated structures at two ends, oil resistance is not increased when the valve 3 is completely opened, full-channel discharge can be realized, cast steel, stainless steel, copper or other materials which do not react with medium of extra-high voltage equipment are used as materials of the valve 3, and a knife gate valve is selected under the general condition of the form of the valve 3. The valve 3 is always in an open state when the extra-high voltage equipment 1 is in normal operation, and is closed only when the device is regularly overhauled and other special conditions need to block the oil flow. The end of the conical tube 2 with smaller caliber is welded with a conical tube connecting flange or is designed into a fixed edge of an integrated structure, the end of the conical tube 2 with smaller caliber is directly fixedly connected with the left side of the valve 3 through a high-strength connecting bolt, and a sealing groove is arranged on the valve connecting flange and is in sealing connection by using a sealing gasket. The right side of the valve 3 is connected with the connecting pipe 4, and the sealing mode is the same as that of the conical pipe 2 and the valve 3. The connecting pipe 4 comprises a connecting pipe flange I41, a connecting pipe flange II 42, a vacuumizing flange 43, an oil drain flange 44 and a main connecting pipe 45, as shown in fig. 2, the connecting pipe flange I41 and the connecting pipe flange II 42 are respectively and fixedly arranged at two ends of the main connecting pipe 45, the vacuumizing flange 43 and the oil drain flange 44 are respectively and fixedly arranged on an upper branch pipe and a lower branch pipe of the main connecting pipe 45, the vacuumizing flange 43 is fixedly connected with a vacuumizing valve, the oil drain flange 44 is fixedly connected with an oil drain valve, and the vacuumizing valve and the oil drain valve are closed in normal running states and can be opened when needed. The second connecting flange 42 is fixedly connected with the valve 3, and the first connecting flange 41 is fixedly connected with the oil gas discharging opening mechanism.
Fig. 3 is a structural cross-sectional view of an oil gas release opening mechanism and flanges at two ends according to a first embodiment of the present invention. The oil gas release opening mechanism comprises a pair of rupture disc holders 6 and a rupture disc 5 fixedly arranged between the pair of rupture disc holders 6, wherein the rupture disc holders 6 are of circular ring structures. The rupture disk 5 is matched with the rupture disk holder 6, and the sealing structure between the rupture disk holder 6 and the rupture disk 5 can be sealed by adopting a sealing strip or can be sealed in a face-to-face hard way. One end (left side) of the discharge cabin 8 is fixedly provided with a discharge cabin flange plate 81, a fastening bolt 11 penetrates through the first connecting pipe flange plate 41 and the discharge cabin flange plate 81 to clamp the rupture disc 5 and the rupture disc clamp holders 6 in the middle, and the rupture disc 5 and the pair of the rupture disc clamp holders 6 are tightly pressed and sealed by means of clamping force brought by the high-strength fastening bolt 11. When the fastening bolts 11 are installed, the required moment of the matched rupture disk 5 is required, the uniform stress of all the fastening bolts 11 can be ensured, and uniform and enough clamping force is provided for the sealing of the rupture disk 5 and the rupture disk clamp 6. The rupture disc 5 and the disc holder 6 in fig. 3 are shown as an inverted arch blasting configuration, but are not limited thereto.
The rupture disk 5 disclosed by the invention is sensitive, accurate, reliable and free from leakage, has the advantages of unlimited discharge area and wide application range, is suitable for rapid overpressure relief when the inside of the extra-high voltage equipment 1 fails, and solves the problems of long pressure relief time and incapability of effectively relieving pressure of a conventional pressure relief valve.
As shown in fig. 2, 4 and 5, the outer circumferences of the opposite sides of the first connecting flange 41 and the discharge chamber flange 81 are respectively provided with a first connecting flange fixing table 411 and a discharge chamber flange fixing table 811 for limiting and fixing the rupture disc holder 6. Meanwhile, a first sealing groove 412 of the first connecting flange plate and a sealing groove 812 of the discharging cabin flange plate are respectively formed in the first fixing table 411 of the connecting flange plate and the fixing table 811 of the discharging cabin flange plate, and sealing elements are placed in the sealing grooves and used for sealing connection of the rupture disc holder 6 with the first fixing table 411 of the connecting flange plate and the fixing table 811 of the discharging cabin flange plate.
Referring to fig. 1, the outer sides of the rupture disk 5 and the rupture disk holder 6 are covered with a fixed rain cover 7, the rain cover 7 is fixedly arranged on the connecting pipe 4 and the discharge cabin 8, and impurities such as accumulated water, ice, dust and the like are prevented from contacting the rupture disk 5, so that the protection and the service life prolonging of the rupture disk 5 are realized.
The invention has simple structure and convenient maintenance, the rupture disk is a disposable article, the outer sides of the rupture disk 5 and the rupture disk holder 6 are covered and provided with the rain cover 7, the daily comprehensive protection is realized, and the manual maintenance is not needed. When the valve 3 is closed during regular maintenance or replacement, namely, the extra-high voltage equipment 1 and an external oil channel are disconnected, and the rupture disk 5 and the rupture disk holder 6 can be quickly replaced.
Referring to fig. 1, the discharge cabin 8 is fixedly installed at the rear of the oil gas discharge opening mechanism, when the oil gas discharge opening mechanism is opened, the rupture disk 5 breaks to discharge the oil gas mixture, and the discharge cabin 8 provides a pressure relief space for the rapidly ejected oil gas mixture after breaking. The discharge cabin 8 is preferably in a pipeline structure, the diameter ratio of the discharge cabin 8 to the rupture disk 5 is different, the discharge efficiency is different, and the optimal diameter of the discharge cabin 8 is determined through calculation and checking. The diameter of the discharge cabin 8 is larger than that of the rupture disk 5, which is beneficial to improving the discharge efficiency. The discharge cabin 8 is internally provided with secondary detection devices such as an oil leakage detector and the like, and the leakage or rupture condition of the rupture disk 5 can be detected by the oil leakage detector.
Referring to fig. 1, considering that the capacity of the discharge cabin 8 cannot meet the oil gas discharge requirement, the oil guide pipeline 12 is fixedly communicated at one end, far away from the oil gas discharge opening mechanism, of the discharge cabin 8, the flexible component 10 is fixedly installed between the discharge cabin 8 and the oil guide pipeline 12, the flexible component 10 is used for isolating the bolt stress of the subsequent oil guide pipeline 12 on the position of the rupture disc holder 6, and the problem that the stress uniformity of the rupture disc holder 6 is affected due to the fact that the fastening bolts 11 on the position of the rupture disc holder 6 are stressed unevenly due to the gravity of the oil guide pipeline 12 is avoided, so that the explosion pressure of the rupture disc 5 is inaccurate is caused. The fastening screw 11 is located outside the flexible assembly 10, the fastening screw 11 passing through the end flanges of the tapping pod 8 and the oil duct 12. After other components are installed, the flexible component 10 is installed after the stress isolation of two sides is realized, the fastening screw 11 is not stressed under the normal working state, when the oil gas discharging device discharges, the oil guide pipeline 12 is impacted by the oil gas mixture, the fastening screw 11 can provide tension and support, and damage caused by overlarge bearing pressure of the flexible component 10 is avoided, and the discharging diversion is influenced. The lower part of the discharge cabin 8 is fixedly installed and supported through a supporting piece 13, the oil guide pipeline 12 is horizontally supported through the supporting piece 13, and the supporting piece 13 is of the prior art and can be flexibly arranged according to the field requirement.
The oil guide pipeline 12 adopts a large-curvature arc-shaped bent pipe, one end of the oil guide pipeline far away from the flexible component is communicated with an oil discharging pool, or oil is guided to other safe places, so that the resistance of the bent part of the pipeline to pressure is reduced, and the effect of fully guiding oil and releasing pressure is achieved. The oil guide pipeline 12 is designed according to the actual situation, and the larger the curvature, the better the curvature is, the fewer the downward turning is, and the diameter of the pipeline is as large as possible. The oil conduit 12 may be selected to be guided by a shorter conduit, where the field permits. The support piece 13 plays a role in fixing and tensioning the oil gas discharging device, the support piece 13 plays a role in supporting the discharging cabin 8 upwards and tensioning the oil guide pipeline 12 leftwards, and when the oil gas discharging device is discharged, the support piece provides sufficient strength for the whole oil gas discharging device, and deformation and even breakage of device components are avoided. The supporting piece 13 needs to have stronger strength, the strength of which mainly depends on the recoil force of the extra-high voltage equipment 1 during fault release, and the supporting strength of the device during fault needs to be ensured according to simulation and test, so that breakage, deformation and the like caused by insufficient supporting are avoided.
The valve 3 is a connecting component between the conical tube 2 and the connecting tube 4 and is used for blocking an oil way between the rupture disc 5 and the extra-high voltage equipment 1 when the rupture disc 5 and the rupture disc holder 6 are overhauled and replaced, so that the tightness of the extra-high voltage equipment 1 is ensured. The connecting pipe 4 is used for discharging oil or vacuumizing, and is used for overhauling or replacing the rupture disk 5. The rupture disk 5 is a differential pressure type damage pressure relief device, when the internal pressure of the extra-high voltage equipment 1 suddenly rises, the pressure difference at two sides of the rupture disk 5 can be broken or fall off when reaching a preset value, and a relief port is opened, so that an oil gas relief path is formed, and the extra-high voltage equipment is prevented from being deformed, torn and even exploded due to overlarge pressure. The rupture disk 5 must withstand various conditions during installation and operation of the uhv device, such as vacuum, positive pressure test, etc. The material and shape of the rupture disk 5 are selected by considering specific application scenes, and the compatibility of the rupture disk 5 and insulating oil in the equipment is considered, namely, the rupture disk 5 is prevented from being corroded or polluted by the insulating oil due to interaction, and the rupture disk is made of metal or graphite; the shape can be divided into a positive arch, a negative arch and a flat plate, and are not listed here. When the rupture disk 5 is selected, the type and the bursting pressure of the rupture disk 5 are determined according to the internal medium, the using condition and the like of the extra-high voltage equipment, and the discharge area and the caliber of the rupture disk 5 are calculated and checked according to the design specification, so that the selection is completed. The rupture disc holders 6 are respectively assembled on two sides of the rupture disc 5 and used for fixing and clamping the rupture disc 5, the connection part of the rupture disc 5 and the rupture disc holders 6 needs to be guaranteed to be uniformly stressed, the stress is required to meet the requirements of the rupture disc, and the accurate action of the rupture disc is guaranteed. During maintenance and replacement, only the rupture disk 5 can be replaced according to the situation, or the rupture disk 5 and the rupture disk holder 6 are replaced in a whole set.
Example two
Fig. 6 is a schematic structural diagram of an oil and gas discharging device according to a second embodiment of the present invention. On the basis of the first embodiment, in order to better meet the rapid relief requirement, a flexible relief cavity 9 is fixedly installed above the relief cabin 8.
There are two embodiments of the flexible relief cavity.
The first structure of the flexible release cavity, as shown in fig. 7, the flexible release cavity 9 includes a release cavity 91, an external metal protecting shell 92 and a connecting pipe 93, the flexible release cavity 91 is a foldable and telescopic cavity, the elasticity is large, the volume can be compressed to be very small when no pressure impact occurs, displacement is generated under the action of pressure, and a large-area pressure release cavity is formed rapidly, so that a flexible expansion space is increased for the flexible release cavity 9, and the functions of fully releasing pressure and receiving the oil-gas mixture sprayed by blasting are achieved. The outer metal protective shell 92 is fixedly mounted on the outer side of the side wall of the relief cavity 91, and the outer metal protective shell 92 is provided with weak points of strength, and the outer metal protective shell 92 plays a role in compressing the relief cavity 91 and provides protection for the relief cavity, so that the weak points of strength of the outer metal protective shell 92 are rapidly broken when the relief cavity 91 is impacted by pressure. The connecting pipeline 93 is arranged at the middle position of the lower surface of the relief cavity 91, and the relief cabin 8 and the flexible relief cavity 9 are connected through the connecting pipeline 93.
The second structure of the flexible relief cavity, as shown in fig. 8, the flexible relief cavity 9 may also be a structure of a relief cavity 91, a relief capsule 94 and a connecting pipeline 93, the opening at the lower part of the relief capsule 94 is directly communicated with the connecting pipeline 93, the relief capsule 94 is located at the bottom of the relief cavity 91, the relief cavity 91 is not in direct contact with the oil-gas mixture sprayed by explosion, the relief cavity 91 may be a folding and telescopic cavity, the upper opening of the relief cavity 91 is communicated with the external atmospheric environment, the relief capsule 94 has high elasticity, the relief capsule 94 may be in a free state and be spread at the bottom of the relief cavity 91 in an even state when no pressure impact occurs, the relief capsule 94 generates displacement under the pressure effect to expand rapidly, and plays the roles of fully relieving pressure and supporting the oil-gas mixture sprayed by explosion, and the relief cavity 91 is used for providing external protection and support for the capsule relief 94. If the field space is enough, the pressure release cavity 91 may be a fixed non-telescopic rigid structure, so as to meet the release area of the pressure release capsule 94.
The life of the rupture disk 5 is limited, and after a certain period of time, maintenance or replacement is necessary, and the specific life and maintenance time have great relations with the selection, working pressure, bursting pressure and the like of the rupture disk 5. When the rupture disk 5 is overhauled, the rupture disk holder 6 is overhauled synchronously, and the rupture disk holder needs to be replaced if damaged. In order to realize the sealing of the extra-high voltage equipment 1 during the maintenance or replacement of the oil gas discharge device, and without a large amount of oil discharge, the internal components of the transformer are exposed to the air, and the following operations can be performed during the maintenance: closing the valve 3, opening the vacuumizing valve and the oil discharging valve at the vacuumizing flange 43 and the oil discharging flange 44, and evacuating insulating oil from the valve 3 to the rupture disk 5; the connecting bolts at the valve 3 and the connecting pipe 4 and the fastening screw 11 between the discharge cabin 8 and the oil guide pipeline 12 are disassembled, the connecting pipe 4, the rupture disk 5, the rupture disk holder 6, the rain cover 7, the discharge cabin 8 and the flexible discharge cavity 9 are integrally removed, and the components between the connecting pipe 4 and the discharge cabin 8 are all disassembled for replacement and overhaul, as shown in fig. 9, and the oil gas discharge device is a schematic diagram of the disassembled structure during overhaul.
After the maintenance or replacement is finished, the pipeline, the valve and the like between the valve 3 and the rupture disk 5 are cleaned, and the reinstallation is carried out after the cleaning and the free of foreign matters are ensured. After the reinstallation is completed, the oil drain valve at the oil drain flange 44 is closed, the vacuumizing valve at the vacuumizing flange 43 is used for vacuumizing, and the valve 3 is slowly opened after vacuumizing is completed, so that the insulating oil of the extra-high voltage equipment 1 flows in again, and then the valve 3 is completely opened to operate again.
Example III
Fig. 10 is a schematic structural view of an oil and gas discharging device according to a third embodiment of the present invention. On the basis of the third embodiment, the oil guide pipe 12 is omitted in the case where the relief cabin 8 and the flexible relief chamber 9 can meet the relief requirement.
Example IV
Fig. 11 is a schematic structural view of an oil and gas discharging device according to a fourth embodiment of the present invention. On the basis of the third embodiment, under the condition that the flexible relief cavity 9 can meet the relief requirement, the relief cabin 8 is omitted, and the conical tube 2, the valve 3, the connecting tube 4, the rupture disc 5, the rupture disc holder 6, the rain cover 7, the relief cabin 8 and the flexible relief cavity 9 are fixedly arranged at the top of the oil tank of the extra-high voltage equipment 1.
In the fourth embodiment, the combination of the rupture disc 5 and the flexible release cavity 9 is adopted, the volume of the flexible release cavity 9 is determined according to the volume of oil gas generated by a fault, after the ultrahigh voltage equipment 1 breaks down, the flexible release cavity 9 is rapidly unfolded, a flexible expansion space is provided for the ultrahigh voltage equipment 1, the pressure acceleration caused by gas production due to the fault is rapidly reduced, the explosion accident caused by the explosion of an oil tank or an elevating seat of the ultrahigh voltage equipment 1 is avoided, and the structure of the unfolded flexible release cavity 9 is shown in fig. 12 after the action of the oil gas release opening mechanism.
Example five
Fig. 13 is a schematic structural diagram of an oil and gas discharging device according to a fifth embodiment of the present invention. On the basis of the first embodiment, a conical tube 2, a valve 3, a connecting tube 4, a rupture disk 5, a rupture disk holder 6, a rain cover 7 and a discharge cabin 8 are fixedly arranged at the lower part of the side wall of the oil tank of the extra-high voltage equipment 1. The supporting piece 13 is used for directly supporting the ground, the discharge cabin 8 and the oil guide pipeline 12 are matched to form an oil discharge passage, when the ultrahigh voltage equipment 1 fails, the rupture disk 5 breaks, insulating oil in the ultrahigh voltage equipment 1 can be rapidly discharged, the pressure acceleration in the ultrahigh voltage equipment 1 is rapidly reduced, and the explosion accident is prevented.
The above five embodiments are only one of the concrete embodiments of the present invention, and any explosion-proof relief device for solving the problem of explosion of extra-high voltage equipment by using the rupture disk 5 as an opening condition and combining with the flexible relief cavity 9 or the oil guide pipeline 12 at will belongs to the protection scope of the present invention, and the same extra-high voltage equipment can be placed at different positions by adopting different numbers of relief devices in different forms.
The above five embodiments of the present invention provide various combined application modes of the oil gas release opening mechanism, the flexible release cavity 9, the release cabin 8 and the oil guide pipeline 12, and provide a complete set of solutions for the problem of explosion of the extra-high voltage equipment 1 in different application scenarios.
Claims (11)
1. The utility model provides an extra-high voltage equipment oil gas bleeder, its characterized in that, includes oil gas bleeder opening mechanism, oil gas bleeder opening mechanism include rupture disk holder (6) and fixed mounting rupture disk (5) on rupture disk holder (6), rupture disk holder (6) be the ring structure, the fixed intercommunication extra-high voltage equipment intercommunication mechanism of one end of rupture disk holder (6), the fixed intercommunication flexible chamber (9) and/or the cabin (8) of bleeding of the other end of rupture disk holder (6), the fixed intercommunication of oil tank and/or the rising seat of extra-high voltage equipment intercommunication mechanism and extra-high voltage equipment.
2. The oil-gas discharging device of the extra-high voltage equipment according to claim 1, wherein the extra-high voltage equipment communicating mechanism comprises a conical pipe (2), a valve (3) and a connecting pipe (4) which are fixedly communicated in sequence, one large-caliber end of the conical pipe (2) is fixedly communicated with an oil tank and/or a lifting seat of the extra-high voltage equipment (1), and the connecting pipe (4) is fixedly communicated with a rupture disc holder (6).
3. The oil-gas discharging device of the extra-high voltage equipment according to claim 2, wherein the connecting pipe (4) comprises a connecting pipe flange I (41), a connecting pipe flange II (42), a vacuumizing flange (43), an oil discharging flange (44) and a main connecting pipe (45), the connecting pipe flange I (41) and the connecting pipe flange II (42) are respectively and fixedly arranged at two ends of the main connecting pipe (45), the vacuumizing flange (43) and the oil discharging flange (44) are respectively and fixedly arranged on an upper branch connecting pipe and a lower branch connecting pipe of the main connecting pipe (45), the vacuumizing flange (43) is fixedly connected with a vacuumizing valve, the oil discharging flange (44) is fixedly connected with the oil discharging valve, one end of the main connecting pipe (45) is fixedly communicated with the valve (3), and the other end of the main connecting pipe (45) is fixedly communicated with the rupture disc holder (6).
4. The oil-gas discharging device of the extra-high voltage equipment according to claim 1, wherein the number of the rupture disc holders (6) is two, the two rupture disc holders (6) are connected end to end, the rupture disc (5) is fixedly clamped between the pair of the opposed rupture disc holders (6), one rupture disc holder (6) is fixedly communicated with the communication mechanism of the extra-high voltage equipment, and the other rupture disc holder (6) is fixedly communicated with the flexible discharging cavity (9) and/or the discharging cabin (8).
5. The oil gas discharging device of extra-high voltage equipment according to claim 4, wherein the rupture disk (5) is made of metal, and the structure of the rupture disk (5) is any one of a positive arch, an inverted arch and a flat plate.
6. The oil and gas discharging device of the extra-high voltage equipment according to claim 1 is characterized in that a flexible discharging cavity (9) is fixedly arranged above the discharging cabin (8), and the discharging cabin (8) and the flexible discharging cavity (9) are communicated with each other.
7. The oil gas discharging device of extra-high voltage equipment according to claim 6, wherein the flexible discharging cavity (9) comprises a discharging cavity (91), an external metal protecting shell (92) and a connecting pipeline (93), the external metal protecting shell (92) is fixedly arranged on the outer side of the side wall of the discharging cavity (91), one end of the connecting pipeline (93) is communicated with an opening arranged in the middle of the lower surface of the discharging cavity (91), and the other end of the connecting pipeline (93) is communicated with an opening arranged in the middle of the upper surface of the discharging cabin (8).
8. The ultra-high voltage equipment explosion-proof device according to claim 6, wherein the flexible relief cavity (9) comprises a relief cavity (91), a relief capsule (94) and a connecting pipeline (93), the upper portion of the relief cavity (91) is opened, one end of the connecting pipeline (93) is communicated with the middle of the lower surface of the relief cavity (91), the other end of the connecting pipeline (93) is communicated with the middle of the lower surface of the relief capsule (94), and the relief capsule (94) is located at the bottom of the relief cavity (91).
9. The oil and gas discharging device for extra-high voltage equipment according to claim 1, wherein the discharging cabin (8) adopts a pipeline structure, and the diameter of the discharging cabin (8) is larger than that of the rupture disc (5).
10. The oil gas discharging device of the extra-high voltage equipment according to claim 1, wherein one end of the discharging cabin (8) far away from the rupture disc holder (6) is fixedly communicated with an oil guide pipeline (12), a flexible assembly (10) is fixedly arranged between the discharging cabin (8) and the oil guide pipeline (12), the flexible assembly (10) is respectively communicated with the discharging cabin (8) and the oil guide pipeline (12), the oil guide pipeline (12) adopts an arc-shaped bent pipe, and one end of the oil guide pipeline (12) far away from the flexible assembly (10) is communicated with an oil discharging tank.
11. The oil and gas discharging device of the extra-high voltage equipment according to claim 1, characterized in that the outer sides of the rupture disc (5) and the rupture disc holder (6) are covered with a fixed installation rain cover (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310914992.8A CN117006288A (en) | 2023-07-25 | 2023-07-25 | Extra-high voltage equipment oil gas bleeder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310914992.8A CN117006288A (en) | 2023-07-25 | 2023-07-25 | Extra-high voltage equipment oil gas bleeder |
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| CN117006288A true CN117006288A (en) | 2023-11-07 |
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| CN202310914992.8A Pending CN117006288A (en) | 2023-07-25 | 2023-07-25 | Extra-high voltage equipment oil gas bleeder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118067710A (en) * | 2024-04-18 | 2024-05-24 | 江苏八方安全设备有限公司 | Rapid calculation method for flow resistance coefficient of rupture disk based on image feature extraction |
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2023
- 2023-07-25 CN CN202310914992.8A patent/CN117006288A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118067710A (en) * | 2024-04-18 | 2024-05-24 | 江苏八方安全设备有限公司 | Rapid calculation method for flow resistance coefficient of rupture disk based on image feature extraction |
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