阅读说明：本技术 一种油浸式变压器用压力释放装置 (Pressure release device for oil-immersed transformer ) 是由 温秋香 于 2021-09-13 设计创作，主要内容包括：本发明公开了一种油浸式变压器用压力释放装置,其结构包括按压钮、防水环、密封环、释放阀、接片,所述的按压钮贯穿连接防水环,所述的防水环底端嵌合连接密封环且通过密封环与释放阀相连,所述的释放阀底端设有接片且二者相互连接,本发明具有的效果：利用热蒸发管实现结构热度同化,在此状态下防水环内部分水汽通过蒸发壁板向外蒸发,配合排湿环管中的吸水囊将潮湿水汽进行吸收,结合阻湿管吸收水汽与干燥结构,从而解决现有油浸式变压器进水短路接电致使压力释放非电量保护常开常闭接点短接而误发告警信号问题。(The invention discloses a pressure release device for an oil-immersed transformer, which structurally comprises a pressing button, a waterproof ring, a sealing ring, a release valve and a splicing piece, wherein the pressing button is connected with the waterproof ring in a penetrating way, the bottom end of the waterproof ring is embedded and connected with the sealing ring and is connected with the release valve through the sealing ring, the bottom end of the release valve is provided with the splicing piece, and the splicing piece and the release valve are mutually connected, so that the pressure release device has the following effects: utilize the thermal evaporation pipe to realize structure heat assimilation, the inside partial steam of waterproof ring passes through the evaporation wall board and outwards evaporates under this state, and the bag that absorbs water in the cooperation hydrofuge ring pipe absorbs moist steam, combines to hinder wet pipe absorption steam and drying structure to solve current oil-immersed transformer and intake the short circuit and connect the electricity and cause the normally open normally closed contact short circuit of pressure release non-electric quantity protection and send out the alarm signal problem by mistake.)

1. The utility model provides an oil-immersed pressure release for transformer, its structure is including pressing button (1), waterproof ring (2), sealing ring (3), relief valve (4), splicing (5), its characterized in that:

according to button (1) through connection waterproof ring (2), waterproof ring (2) bottom gomphosis connect sealing ring (3) and link to each other with relief valve (4) through sealing ring (3), relief valve (4) bottom be equipped with splicing (5) and the two interconnect.

2. The pressure relief device for an oil filled transformer of claim 1, wherein: waterproof ring (2) including ring shell (20), guide arm (21), thermal evaporation pipe (22), induction pipe (23), hydrofuge ring pipe (24), hinder wet pipe (25), ring shell (20) run through and be equipped with guide arm (21), guide arm (21) below interval be equipped with thermal evaporation pipe (22), thermal evaporation pipe (22) hookup induction pipe (23) and its both ends all communicate each other with hydrofuge ring pipe (24), hinder wet pipe (25) locate thermal evaporation pipe (22) and induction pipe (23) below position.

3. The pressure relief device for an oil filled transformer of claim 2, wherein: the heat evaporation pipe (22) comprises a hot runner (220), a heat pipe (221), evaporation wall plates (222) and heating balls (223), the outer layer of the hot runner (220) is attached to the heat pipe (221), the evaporation wall plates (222) are arranged outside the heat pipe (221) and are communicated with the heating balls (223) at two ends.

4. The pressure relief device for an oil filled transformer of claim 2, wherein: the induction pipe (23) comprises a support (230), a lime layer (231), an inductor (232) and a spray pipe (233), wherein the inductor (232) is arranged in the support (230), the side edge of the inductor (232) is wrapped by the lime layer (231) and the spray pipe (233) is uniformly arranged on the outer layer.

5. The pressure relief device for an oil filled transformer of claim 2, wherein: the dehumidifying ring pipe (24) comprises a pipe body (240), air guide grooves (241), a convection pipe (242), a fan (243) and a water absorbing bag (244), wherein the air guide grooves (241) are arranged on two sides of the top end of the pipe body (240), one side of the upper end face of the convection pipe (242) is connected with the fan (243) and is arranged in the middle of the pipe body (240), and the water absorbing bag (244) is arranged on the lower portion of the pipe body (240).

6. The pressure relief device for an oil filled transformer of claim 2, wherein: the moisture-resistant pipe (25) comprises a bearing plate (250), a water absorption slit plate (251), an air guide groove (252) and an electric heating plate (253), the bottom of the bearing plate (250) is connected with the water absorption slit plate (251), and the air guide groove (252) is arranged below the water absorption slit plate (251) and is connected with the upper end of the electric heating plate (253).

Technical Field

The invention relates to the field of transformers, in particular to a pressure release device for an oil-immersed transformer.

Background

A pressure release valve is one of main non-electric quantity protection devices of a transformer, the misoperation of the pressure release valve can cause a variable shutdown accident, at present, based on the technical means of transformer installation, a cable from an aviation plug of the pressure release valve to a terminal box through a cable groove box is not a cable, a cable joint can exist at the plug, generally, an insulating tape is wound on an outer-coated flexible pipe for treatment, the pressure release valve is generally located at a lower position of a box top and is easy to accumulate water, so that the outer-coated flexible pipe of the section of cable is soaked in water for a long time or is located in a humid environment, after a long time, the section of flexible pipe is corroded to cause water inflow to cause short circuit at the joints of the two sections of cables, the pressure release non-electric quantity protection normally closed contact is caused to be short-circuited, and an alarm signal is mistakenly sent, therefore, the pressure release device for the oil-immersed transformer needs to be developed, and the problem that the existing oil-immersed transformer is that the water inflow short circuit and the electricity causes the pressure release non-electric quantity protection normally closed contact to be short-circuited, and the alarm signal is mistakenly sent is sent out is solved Signal problems.

Summary of the invention

Aiming at the defects of the prior art, the invention is realized by the following technical scheme: a pressure release device for an oil-immersed transformer structurally comprises a press button, a waterproof ring, a sealing ring, a release valve and a splicing piece, wherein the press button is connected with the waterproof ring in a penetrating way, the bottom end of the waterproof ring is connected with the sealing ring in an embedding way and is connected with the release valve through the sealing ring, the bottom end of the release valve is provided with the splicing piece, the splicing piece and the release valve are connected with each other, the press button is used for constructing a carrier of an internal circuit and a mechanical conduction element for external contact of the pressure release device, a device main body connected with the bottom can be released by pressing the press button, the press button can be used as an external starting structure of the pressure release device of the transformer by depending on the press button, the waterproof ring serves as an unconventional core waterproof structure to protect the internal circuit, water vapor can be removed under the condition that trace water vapor enters the structure, and the structure is kept dry in the daily operation process, and the sealing ring serves as a conventional waterproof element, the oil-immersed transformer protection device is positioned at a joint between a waterproof ring and a release valve and covers the whole body of the oil-immersed transformer in an annular cross surface mode, the oil-immersed transformer protection device is made of waterproof rubber materials, has the characteristics of flexibility and elasticity, can prevent water vapor from penetrating the joint, has insulating performance and effectively prevents current from penetrating the joint, the release valve is a main body structure of the release device and is used for protecting an oil tank, when the oil-immersed transformer which is installed and matched breaks down in the operation process, if a coil is overheated due to the fault to vaporize partial transformer oil, the pressure in the transformer oil tank can be rapidly increased, the oil tank is protected from deformation or burst in the operation process of the release valve, once the pressure in the oil tank rises again and reaches opening pressure, the release valve operates again until the pressure in the oil tank is reduced to a normal value, and the connecting piece is a connecting carrier between the release device and the transformer.

As a further optimization of the technical proposal, the waterproof ring comprises a ring shell, a guide rod, a thermal evaporation tube, an induction tube, a moisture-discharging ring tube and a moisture-resisting tube, the ring shell is provided with a guide rod in a penetrating way, the lower part of the guide rod is provided with a thermal evaporation pipe at intervals, the thermal evaporation pipe is connected with an induction pipe, both ends of the thermal evaporation pipe are communicated with the moisture-removing ring pipe, the damp-blocking pipe is arranged at the position below the thermal evaporation pipe and the induction pipe, the ring shell is of a shell structure of a waterproof ring, the shell structure of the waterproof ring is divided into two layers, the inner layer mainly aims at waterproofing and insulation, is made of composite materials and is matched with an external antirust metal material to form an integral shell, the guide rod is used for conducting the release valve and the press button, thereby realize the mechanism linkage, the thermal evaporation pipe is used for evaporating the steam of infiltration in the structure, combines the cooperation of induction pipe induced humidity to dehumidify the ring canal and hinders wet pipe and get rid of the steam of structure.

As a further optimization of the technical scheme, the thermal evaporation tube comprises a hot runner, a heat pipe, evaporation wall plates and heating balls, the outer layer of the hot runner is attached to the heat pipe, the evaporation wall plates are arranged outside the heat pipe and communicated with the heating balls at two ends, the hot runner is used for hot gas circulation of a heat pipe structure, the heat pipe is used as a heat conducting medium carrier to realize structural heat assimilation through heat generated by the side heating balls, the heat pipe reaches a certain temperature under the basic condition that the heating balls are converted into heat energy to generate heat by depending on electric energy, and partial water vapor in the waterproof ring is evaporated outwards through the evaporation wall plates under the state.

As the further optimization of the technical scheme, the induction pipe comprises a support, a lime layer, an inductor and a spray pipe, wherein the inductor is arranged in the support, the side edge of the inductor is wrapped by the lime layer and the spray pipe is uniformly arranged on the outer layer of the lime layer, the support is used as a frame structure of the induction pipe, the electric heating temperature can be isolated without blocking water vapor entering, the lime layer serves as a cavity structure to store lime substances, the lime substances can release heat when contacting with trace water vapor entering the structure to cause temperature rise, the inductor operates to start the spray pipe to manufacture air flow when the temperature rises, and the air flow circulates in the support and is discharged outwards through an opening to enter a moisture exhaust ring pipe.

As a further optimization of the technical scheme, the moisture-removing circular tube comprises a tube body, air guide grooves, a convection tube, a fan and a water absorption bag, wherein the air guide grooves are formed in two sides of the top end of the tube body, one side of the upper end surface of the convection tube is connected with the fan and is arranged in the middle of the tube body, the water absorption bag is arranged in the lower position of the tube body, the air guide grooves are formed in two sides of the tube body and are communicated with the convection tube, when water vapor enters the structure, the fan is driven by air flow synchronously input through a sensing tube, the fan is driven to rotate through air flow, and a winding air flow group is formed in the region to drive the water vapor to flow towards the position of the water absorption bag, and when the water vapor is positioned at the position of the water absorption bag, the water vapor can be absorbed by a sponge water absorption material of the water absorption bag.

As the further optimization of this technical scheme, hinder wet pipe including accept the board, absorb water the seam board, lead dead slot, electric plate, accept board bottom link up and absorb water the seam board, the seam board that absorbs water have lead the dead slot and link to each other with the electric plate upper end, accept the board and be the triangle-like toper structure, be favorable to steam to sink and condense, rely on honeycomb shape to absorb water the seam board and absorb moist steam and borrow and lead the dead slot and down discharge to both sides simultaneously, at this in-process through the dry steam of the produced heat of electric plate heat transfer, avoid steam to adhere to structurally.

Advantageous effects

The pressure release device for the oil-immersed transformer is reasonable in design and strong in functionality, and has the following beneficial effects:

the invention utilizes the heat evaporation tube to realize structural heat assimilation, the heat conduction tube reaches a certain temperature under the basic condition that the heating ball is converted from electric energy to heat energy to generate heat, partial water vapor in the waterproof ring is evaporated outwards through the evaporation wall plate under the state, the water absorption bag in the moisture exhaust ring tube is matched to absorb the wet water vapor, and the moisture resistance tube is combined to absorb the water vapor and the drying structure, so that the problem that the pressure release non-electric quantity protection normally open normally closed contact is short-circuited to send out an alarm signal by combining the water inlet short circuit power connection of the existing oil-immersed transformer is solved.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a schematic side view of a pressure relief device for an oil-immersed transformer according to the present invention;

FIG. 2 is a side cross-sectional view of the waterproof ring structure of the present invention;

FIG. 3 is a side cross-sectional view of a thermal evaporation tube configuration of the present invention;

FIG. 4 is a side cross-sectional view of an induction tube structure of the present invention;

FIG. 5 is a side cross-sectional view of the moisture removal grommet construction of the present invention;

FIG. 6 is a side cross-sectional view of the moisture barrier tube structure of the present invention;

in the figure: the device comprises a press button-1, a waterproof ring-2, a sealing ring-3, a release valve-4, a splicing-5, a ring shell-20, a guide rod-21, a thermal evaporation tube-22, an induction tube-23, a dehumidifying ring tube-24, a moisture-resisting tube-25, a hot runner-220, a heat-conducting pipe-221, an evaporation wall plate-222, a heating ball-223, a bracket-230, a lime layer-231, an inductor-232, a spray tube-233, a tube body-240, an air guide groove-241, a convection tube-242, a fan-243, a water absorption bag-244, a bearing plate-250, a water absorption seam plate-251, an air guide groove-252 and an electric heating plate-253.

Detailed Description

In order to make the technical means, the original characteristics, the achieved purposes and the effects of the invention easy to understand, the following description and the accompanying drawings further illustrate the preferred embodiments of the invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

Referring to fig. 1-2, the present invention provides an embodiment of a pressure release device for an oil-immersed transformer:

referring to fig. 1, a pressure release device for an oil-immersed transformer comprises a press button 1, a waterproof ring 2, a sealing ring 3, a release valve 4 and a connecting sheet 5, wherein the press button 1 is connected with the waterproof ring 2 in a penetrating way, the bottom end of the waterproof ring 2 is embedded and connected with the sealing ring 3 and is connected with the release valve 4 through the sealing ring 3, the connecting sheet 5 is arranged at the bottom end of the release valve 4 and is connected with the release valve 4, the press button 1 is used for constructing a carrier of an internal circuit and a mechanical conduction element for the external contact of the pressure release device, a device main body connected with the bottom can be released by pressing down the press button 1, the press button 1 can be used as an external starting structure of the pressure release device of the transformer, the waterproof ring 2 is used as an unconventional core waterproof structure to protect the internal circuit, and can clear water vapor under the condition that trace water vapor invades into the structure and keep the structure dry in the daily operation process, the sealing ring 3 is used as a conventional waterproof element, is positioned at the joint between the two structures of the waterproof ring 2 and the release valve 4 and covers the whole of the structure with an annular transverse surface, it is made of waterproof rubber material, has the characteristics of flexibility and elasticity, can prevent water vapor from permeating seams, meanwhile, the release valve 4 has insulation performance, effectively prevents current from penetrating through a joint, is a main body structure of the release device, when the oil-immersed transformer installed and matched with the oil-immersed transformer fails in operation, if a coil is overheated to vaporize partial transformer oil due to failure, the pressure in the transformer oil tank can be rapidly increased, the release valve 4 operates to protect the oil tank from deformation or burst, once the pressure in the oil tank rises again and reaches an opening pressure, the release valve 4 operates again until the pressure in the oil tank is reduced to a normal value, and the connecting piece 5 is a connecting carrier between the release device and the transformer.

Referring to fig. 2, the waterproof ring 2 includes a ring housing 20, a guide rod 21, a thermal evaporation tube 22, an induction tube 23, a moisture exhaust ring tube 24, and a moisture blocking tube 25, the ring shell 20 is provided with a guide rod 21 in a penetrating way, a thermal evaporation pipe 22 is arranged below the guide rod 21 at intervals, the thermal evaporation tube 22 is connected with the induction tube 23, and both ends of the thermal evaporation tube are communicated with the moisture exhaust ring tube 24, the moisture-resisting pipe 25 is arranged below the thermal evaporation pipe 22 and the induction pipe 23, the ring shell 20 is a shell structure of the waterproof ring 2, the shell structure of the waterproof ring 2 is divided into two layers, the inner layer mainly aims at waterproofing and insulation, is made of composite materials and is matched with an external antirust metal material to form an integral shell, the guide rod 21 is used for conducting the release valve 4 and the press button 1, therefore, mechanism linkage is realized, the thermal evaporation tube 22 is used for evaporating water vapor permeating into the structure, and the sensing tube 23 is combined to sense humidity and is matched with the moisture exhaust ring tube 24 and the moisture resistance tube 25 to exhaust the water vapor of the structure.

Example 2

Referring to fig. 1 to 6, the present invention provides an embodiment of a pressure release device for an oil-immersed transformer:

referring to fig. 1, a pressure release device for an oil-immersed transformer comprises a press button 1, a waterproof ring 2, a sealing ring 3, a release valve 4 and a connecting sheet 5, wherein the press button 1 is connected with the waterproof ring 2 in a penetrating way, the bottom end of the waterproof ring 2 is embedded and connected with the sealing ring 3 and is connected with the release valve 4 through the sealing ring 3, the connecting sheet 5 is arranged at the bottom end of the release valve 4 and is connected with the release valve 4, the press button 1 is used for constructing a carrier of an internal circuit and a mechanical conduction element for the external contact of the pressure release device, a device main body connected with the bottom can be released by pressing down the press button 1, the press button 1 can be used as an external starting structure of the pressure release device of the transformer, the waterproof ring 2 is used as an unconventional core waterproof structure to protect the internal circuit, and can clear water vapor under the condition that trace water vapor invades into the structure and keep the structure dry in the daily operation process, the sealing ring 3 is used as a conventional waterproof element, is positioned at the joint between the two structures of the waterproof ring 2 and the release valve 4 and covers the whole of the structure with an annular transverse surface, it is made of waterproof rubber material, has the characteristics of flexibility and elasticity, can prevent water vapor from permeating seams, meanwhile, the release valve 4 has insulation performance, effectively prevents current from penetrating through a joint, is a main body structure of the release device, when the oil-immersed transformer installed and matched with the oil-immersed transformer fails in operation, if a coil is overheated to vaporize partial transformer oil due to failure, the pressure in the transformer oil tank can be rapidly increased, the release valve 4 operates to protect the oil tank from deformation or burst, once the pressure in the oil tank rises again and reaches an opening pressure, the release valve 4 operates again until the pressure in the oil tank is reduced to a normal value, and the connecting piece 5 is a connecting carrier between the release device and the transformer.

Referring to fig. 2, the waterproof ring 2 includes a ring housing 20, a guide rod 21, a thermal evaporation tube 22, an induction tube 23, a moisture exhaust ring tube 24, and a moisture blocking tube 25, the ring shell 20 is provided with a guide rod 21 in a penetrating way, a thermal evaporation pipe 22 is arranged below the guide rod 21 at intervals, the thermal evaporation tube 22 is connected with the induction tube 23, and both ends of the thermal evaporation tube are communicated with the moisture exhaust ring tube 24, the moisture-resisting pipe 25 is arranged below the thermal evaporation pipe 22 and the induction pipe 23, the ring shell 20 is a shell structure of the waterproof ring 2, the shell structure of the waterproof ring 2 is divided into two layers, the inner layer mainly aims at waterproofing and insulation, is made of composite materials and is matched with an external antirust metal material to form an integral shell, the guide rod 21 is used for conducting the release valve 4 and the press button 1, therefore, mechanism linkage is realized, the thermal evaporation tube 22 is used for evaporating water vapor permeating into the structure, and the sensing tube 23 is combined to sense humidity and is matched with the moisture exhaust ring tube 24 and the moisture resistance tube 25 to exhaust the water vapor of the structure.

Referring to fig. 3, the thermal evaporation tube 22 includes a hot runner 220, a heat pipe 221, an evaporation wall 222, and heating balls 223, the outer layer of the hot runner 220 is attached to the heat pipe 221, the evaporation wall 222 is disposed outside the heat pipe 221 and is communicated with the heating balls 223 at two ends, the hot runner 220 is used for circulating hot air in the structure of the heat pipe 221, the heat pipe 221 is used as a heat-conducting medium carrier to achieve structural heat assimilation through heat generated by the side heating balls 223, the heat pipe 221 is allowed to reach a certain temperature under the basic condition that the heating balls 223 are converted into heat energy by electric energy, and part of water vapor in the waterproof ring 2 is evaporated outwards through the evaporation wall 222 in this state.

Referring to fig. 4, the induction tube 23 includes a support 230, a lime layer 231, an inductor 232, and a nozzle 233, the inductor 232 is disposed in the support 230, the lime layer 231 is wrapped around the side of the inductor 232, the nozzle 233 is uniformly disposed on the outer layer of the inductor 232, the support 230 serves as a frame structure of the induction tube 23 to isolate the electric heating temperature without blocking the water vapor, the lime layer 231 serves as a cavity structure to store lime substances, the lime substances are heated due to heat release when contacting with a small amount of water vapor entering the structure, the temperature is raised, and the inductor 232 operates to start the nozzle 233 to produce an air flow, which circulates in the support 231 and is discharged through the opening to the outside to enter the moisture exhaust loop 24.

Referring to fig. 5, the moisture exhaust loop 24 includes a tube 240, air guide grooves 241, a convection tube 242, a fan 243, and a water absorption bag 244, the air guide grooves 241 are disposed on both sides of the top end of the tube 240, one side of the upper end surface of the convection tube 242 is connected to the fan 243 and is disposed at the middle position of the tube 240, the water absorption bag 244 is disposed at the lower position of the tube 240, the air guide grooves 241 are disposed on both sides of the tube 240 and are in mutual communication with the convection tube 242, when the water vapor enters the structure, the fan 243 in the structure is driven by the air flow synchronously input from the induction tube 23, the fan 243 rotates under the driving of the air flow and forms a winding air flow group in the region to drive the water vapor to flow toward the position of the water absorption bag 244, and the water vapor is absorbed by the sponge water absorption material of the water absorption bag 244 when the water vapor is at the position of the water absorption bag 244.

Referring to fig. 6, the moisture blocking pipe 25 includes a receiving plate 250, a water absorbing slit plate 251, an air guiding groove 252, and an electric heating plate 253, the bottom of the receiving plate 250 is connected to the water absorbing slit plate 251, the air guiding groove 252 is disposed below the water absorbing slit plate 251 and connected to the upper end of the electric heating plate 253, the receiving plate 250 is of a structure similar to a triangular cone, which is beneficial to the water vapor sinking and condensation, and meanwhile, the honeycomb-shaped water absorbing slit plate 251 absorbs the wet water vapor and discharges the water vapor downwards to both sides through the air guiding groove 252, so that the heat generated by the electric heating plate 253 for transferring heat dries the water vapor, and the water vapor is prevented from attaching to the structure.

The specific realization principle is as follows:

if the transformer release device permeates trace water vapor in a long-time use process due to environmental moisture, the water vapor can enable the induction tube 23 to release heat to cause temperature rise and start the spray tube 233 to make air flow, the air flow drives the fan 243 to rotate through air flow driving and form a winding air flow group in an area to drive the water vapor to flow towards the position of the water absorbing bag 244 to enable the water vapor to be absorbed by the water absorbing bag 244, the heat conducting tube 221 is enabled to reach a certain temperature under the basic condition that the heating ball 223 is used for converting electric energy into heat energy to generate heat, the water vapor in the waterproof ring 2 is outwards evaporated through the evaporation wall plate 222 in the state, the residual water vapor is used for converting heat dry water vapor generated by the electric heating of the electric heating plate 253, the water vapor is prevented from being attached to the structure, and the problem that the alarm signal is mistakenly sent due to the fact that the water inlet short circuit of the existing oil-immersed transformer is connected to electricity to cause pressure release non-electricity to protect the normally-open normally-closed contact short circuit.

While there have been shown and described what are at present considered the fundamental principles of the invention, the essential features and advantages thereof, it will be understood by those skilled in the art that the present invention is not limited by the embodiments described above, which are merely illustrative of the principles of the invention, but rather, is capable of numerous changes and modifications in various forms without departing from the spirit or essential characteristics thereof, and it is intended that the invention be limited not by the foregoing descriptions, but rather by the appended claims and their equivalents.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.