CN114517862A - Temporary connection device and method for dismantling transformer gas relay - Google Patents
Temporary connection device and method for dismantling transformer gas relay Download PDFInfo
- Publication number
- CN114517862A CN114517862A CN202210147256.XA CN202210147256A CN114517862A CN 114517862 A CN114517862 A CN 114517862A CN 202210147256 A CN202210147256 A CN 202210147256A CN 114517862 A CN114517862 A CN 114517862A
- Authority
- CN
- China
- Prior art keywords
- transformer
- oil
- connecting pipe
- relay
- flange plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000004891 communication Methods 0.000 claims abstract description 35
- 239000012780 transparent material Substances 0.000 claims description 3
- 238000007689 inspection Methods 0.000 description 11
- 238000009434 installation Methods 0.000 description 6
- 239000000243 solution Substances 0.000 description 5
- 239000002699 waste material Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- 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
- F16L23/032—Flanged joints the flanges being connected by members tensioned axially characterised by the shape or composition of the flanges
-
- 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
- F16L27/00—Adjustable joints, Joints allowing movement
- F16L27/10—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations
- F16L27/107—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations the ends of the pipe being interconnected by a flexible sleeve
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention relates to the technical field of transformers, in particular to a temporary communication device and method for dismantling a transformer gas relay. The temporary connecting device for dismantling the transformer gas relay is connected with a connecting flange on an oil way pipeline through the first flange plate and the second flange plate, and then the first through hole in the first flange plate is communicated with the second through hole in the second flange plate through the flexible connecting pipe, so that the oil conservator is communicated with the oil tank body. Because of the flexible connection pipe can be crooked, so as long as the length of flexible connection pipe is more than or equal to buchholz relay's width, can communicate conservator and body oil tank, so only need set up the length of flexible connection pipe and be greater than the width of majority buchholz relay, transformer buchholz relay demolishs interim intercommunication device and can be applicable to the buchholz relay occasion of different widths, has the commonality.
Description
Technical Field
The invention relates to the technical field of transformers, in particular to a temporary communication device and method for dismantling a transformer gas relay.
Background
The gas relay is installed in the pipeline between the oil tank and the oil tank of the transformer, and when the oil is decomposed to generate gas or oil flow surges due to the internal fault of the transformer, the contact of the gas relay is operated to connect the appointed control loop and send out a signal alarm (light gas) or start a protection element to automatically cut off the transformer (heavy gas).
The calibration of the gas relay is a part of annual inspection work, and according to the notification about the special work for improving the operation reliability of the gas relay of Guangdong power grid company, the maintenance period requirement of the gas relay is as follows: the inspection period of a transformer with the voltage of 220KV and above and a high-resistance gas relay is 6 years; second, the test period of the buchholz relay for the transformer of 110KV and below is 12 years. In order to when the buchholz relay censorship, intercommunication body oil tank and conservator avoid body oil tank oil pressure to change acutely, patent CN202351401U provides a transformer buchholz relay inspection with replacement UNICOM device, can be with the oil circuit pipeline intercommunication of buchholz relay both sides under the condition that lacks reserve buchholz relay, effectively avoid because of the acutely change of body oil tank oil pressure, the leakproofness of the body oil tank that leads to destroys and the maloperation of pressure release valve.
However, the replaceable communicating device for the transformer gas relay inspection is of a rigid structure, is inconvenient to install without an adjusting space, cannot observe the internal exhaust condition, and the gas relays with different widths need to be provided with communicating devices with different lengths, namely the replaceable communicating device for the transformer gas relay inspection does not have universality.
Disclosure of Invention
The invention provides a temporary communication device for dismantling a transformer gas relay, which is used for solving the technical problem that a replacement communication device for transformer gas relay inspection in the prior art is not universal.
The invention provides a temporary communication device for dismantling a transformer gas relay, which comprises:
the first flange plate, the second flange plate and the flexible connecting pipe are arranged on the outer wall of the shell;
the first flange plate is provided with an axial first through hole matched with the flexible connecting pipe;
the second flange plate is provided with an axial second through hole matched with the flexible connecting pipe;
one end of the flexible connecting pipe is aligned with the first through hole and is detachably communicated with the first flange plate, and the other end of the flexible connecting pipe is aligned with the second through hole and is detachably communicated with the second flange plate.
In a first possible implementation manner of the first aspect, the apparatus further includes: a three-way valve;
The first end of the three-way valve is detachably connected with one end of the flexible connecting pipe, the second end of the three-way valve is detachably connected with the first flange plate or the second flange plate through a through hole, the third end of the three-way valve is an air outlet, and the axis of the first end is collinear with the axis of the second end.
In combination with the first possible implementation manner of the first aspect, in a second possible implementation manner, the flexible connection pipe includes: the first flexible connecting pipe and the second flexible connecting pipe are connected;
when the flexible connecting pipe is assembled, the first flexible connecting pipe is positioned above the second flexible connecting pipe;
the first hole end of the through hole is a first orifice matched with the oil pipeline, the second hole end is a second orifice and a third orifice, the second orifice is matched with the first flexible connecting pipe, and the third orifice is matched with the second flexible connecting pipe;
the first end is connected with one end of the first flexible connecting pipe.
In combination with the second possible implementation of the apparatus of the first aspect, in a third possible implementation of the apparatus, the first orifice, the second orifice, and the third orifice are circular ports;
the diameter of the second and third apertures is less than the radius of the first aperture;
the maximum distance from the second aperture to the third aperture is equal to the diameter of the first aperture.
In combination with the second possible implementation of the apparatus according to the first aspect, in a fourth possible implementation of the apparatus, the flexible connection pipe and the flange are detachably connected to each other through a threaded connection.
With reference to the fourth possible implementation apparatus of the first aspect, in a fifth possible implementation apparatus, the apparatus further includes: a threaded connection;
the second hole end is provided with a threaded pipe, one end of the threaded pipe is aligned with the second hole or the third hole, and the other end of the threaded pipe is provided with a first external thread;
both ends of the flexible connecting pipe are provided with second external threads;
the end of the second end is provided with a third external thread;
one end of the threaded connecting piece is connected with the first external thread in a matching way, and the other end of the threaded connecting piece is connected with the second external thread or the third external thread in a matching way.
In a sixth possible implementation of the apparatus of the first aspect, the flexible connecting tube is made of a transparent material.
In a seventh possible implementation of the apparatus of the first aspect, the flange is a circular flange;
the flange plate is provided with connecting holes which are uniformly distributed in the circumferential direction.
The second aspect of the present invention provides a method for temporarily connecting a gas relay of a transformer by removing, the method using any one of the temporary connecting devices for temporarily connecting a gas relay of a transformer provided by the first aspect, comprising:
The oil level of the oil tank of the body is adjusted through a vacuum device, so that the oil level is lower than the bottom of the gas relay;
emptying the transformer oil in the gas relay;
disassembling the gas relay;
mounting the transformer gas relay and dismantling the temporary communication device;
and controlling a valve at the side of the oil conservator to allow the transformer oil to flow into the body oil tank from the oil conservator.
In a first possible implementation method of the second aspect, the controlling the valve on the oil conservator side to allow the transformer oil to flow from the oil conservator into the body oil tank further includes:
the oil level of the oil tank of the body is adjusted through the vacuum device, so that the oil level is lower than the bottom of the temporary communication device for dismantling the transformer gas relay;
emptying the transformer gas relay and removing the transformer oil in the temporary communication device;
disassembling the transformer gas relay to disassemble the temporary communication device;
installing the gas relay;
and controlling the valve to allow the transformer oil to flow into the body oil tank from the oil conservator.
According to the technical scheme, the invention has the following advantages:
the temporary connecting device for dismantling the transformer gas relay is connected with a connecting flange on an oil way pipeline through a first flange plate and a second flange plate, then a first through hole in the first flange plate is communicated with a second through hole in the second flange plate through a flexible connecting pipe, and an oil conservator is further communicated with a main oil tank. Because of the flexible connection pipe can be crooked, so as long as the length of flexible connection pipe is more than or equal to buchholz relay's width, can communicate conservator and body oil tank, so only need set up the length of flexible connection pipe and be greater than the width of majority buchholz relay, transformer buchholz relay demolishs interim intercommunication device and can be applicable to the buchholz relay occasion of different widths, has the commonality.
Secondly, the temporary connecting device for dismantling the transformer gas relay is assembled by sequentially combining a plurality of parts, namely the first flange plate and the second flange plate are respectively installed, and then the flexible connecting pipe is installed, so that the weight of a single element is light, and the flange plate is not influenced by the flexible connecting pipe when being installed, and the installation is convenient.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram illustrating a temporary communication device for removing a transformer buchholz relay according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a second flange according to an embodiment of the present invention;
fig. 3 is a schematic flow chart illustrating a method for removing temporary connection of a transformer buchholz relay according to an embodiment of the present invention;
wherein: 10-a first flange plate, 20-a second flange plate, 21-a first orifice, 22-a second orifice, 23-a third orifice, 24-a connecting hole, 30-a flexible connecting pipe, 31-a first flexible connecting pipe, 32-a second flexible connecting pipe, 40-a three-way valve, 50-a threaded connecting piece and 60-a threaded pipe.
Detailed Description
The embodiment of the invention provides a temporary communication device for dismantling a transformer buchholz relay, which is used for solving the technical problem that a replacement communication device for transformer buchholz relay inspection in the prior art has no universality.
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present application, it should be noted that the terms "mounted," "connected," and "connected" are used broadly and are defined as, for example, a fixed connection, an exchangeable connection, an integrated connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, and a communication between two elements, unless otherwise explicitly stated or limited. Specific meanings of the above terms in the embodiments of the present application can be understood in specific cases by those of ordinary skill in the art.
Example one
Patent CN202351401U provides a transformer buchholz relay inspection is with replacement UNICOM device, can effectively avoid because of the violent change of body oil tank oil pressure, the leakproofness of the body oil tank that leads to destroys and the maloperation of pressure release valve with the oil circuit pipeline intercommunication of buchholz relay both sides under the condition that lacks reserve buchholz relay. However, the replaceable communicating device for the transformer gas relay inspection is of a rigid structure, so that the installation is inconvenient, and the gas relays with different widths need to be provided with communicating devices with different lengths, namely, the replaceable communicating device for the transformer gas relay inspection does not have universality.
Referring to fig. 1 to fig. 2, the temporary connection device for removing a transformer buchholz relay provided in the present embodiment includes:
a first flange plate 10, a second flange plate 20 and a flexible connecting pipe 30; the first flange plate 10 is provided with an axial first through hole matched with the flexible connecting pipe 30; the second flange plate 20 is provided with an axial second through hole matched with the flexible connecting pipe 30; one end of the flexible connecting tube 30 is aligned with the first through hole and detachably communicated with the first flange 10, and the other end is aligned with the second through hole and detachably communicated with the second flange 20.
It should be noted that: the first flange plate 10 and the second flange plate 20 need to be connected with a connecting flange on an oil pipeline in a matching mode so as to communicate the flexible connecting pipe 30 with the oil pipeline, so that the first flange plate 10 and the second flange plate 20 are provided with connecting holes 24 matched with the connecting flanges, the connecting holes 24 are matched with nuts and bolts so as to connect the flange plates with the connecting flanges, and generally, the connecting flanges on two sides of the gas relay are the same, so that the first flange plate 10 and the second flange plate 20 have the same shape and structure, the flange plates are universal for the connecting flanges on two sides, and special distinction is not needed during installation; the flexible connection tube 30 is made of a flexible material so that the flexible connection tube 30 can be easily bent, the shape of the mouth of the flexible connection tube 30 is not limited herein, can be set to be the same as the shape of the pipe orifice of the oil pipeline, the length of the flexible connecting pipe 30 can be set according to the width of the common gas relay, can be set to be longer than the width of most of the buchholz relays and can also be set to be longer than the width of all the buchholz relays, the longer the length of the flexible connecting pipe 30 is, the higher the universality of the dismantling of the temporary communication device of the transformer buchholz relay is, however, the longer the length of the flexible connection pipe 30 is, the lower the convenience of the transformer buchholz relay for removing the temporary communication means is, therefore, the length of the flexible connecting pipe 30 needs to be balanced in universality and convenience, and the width of the gas relay is the shortest distance between the connecting flanges at two sides of the gas relay; the orifice of one end of the first through hole and the orifice of the second through hole are the same as and aligned with the orifice of the oil pipeline, and the orifice of the other end of the first through hole and the orifice of the second through hole are the same as and aligned with the orifice of the flexible connecting pipe 30; the detachable connection of flexible connection tube 30 and the flange plate can be realized by clamping, thread fitting and other connection modes, such as: external threads are formed at two ends of the flexible connecting pipe 30, internal threads matched with the external threads are formed in the first through hole and the second through hole, and the detachable installation can be achieved by screwing the external threads into the internal threads.
The beneficial effects of this embodiment: the temporary connecting device for dismantling the transformer gas relay is connected with a connecting flange on an oil way pipeline through a first flange plate and a second flange plate, then a first through hole in the first flange plate is communicated with a second through hole in the second flange plate through a flexible connecting pipe, and an oil conservator is further communicated with a main oil tank. Because of the flexible connection pipe can be crooked, so as long as the length of flexible connection pipe is more than or equal to buchholz relay's width, can communicate conservator and body oil tank, so only need set up the length of flexible connection pipe and be greater than the width of majority buchholz relay, transformer buchholz relay demolishs interim intercommunication device and can be applicable to the buchholz relay occasion of different widths, has the commonality.
Secondly, the temporary connecting device for dismantling the transformer gas relay is assembled by sequentially combining a plurality of parts, namely the first flange plate and the second flange plate are respectively installed, and then the flexible connecting pipe is installed, so that the weight of a single element is light, and the flange plate is not influenced by the flexible connecting pipe when being installed, and the installation is convenient.
And the transparent flexible connecting pipe is matched with the three-way valve, so that the backflow condition of the transformer oil can be observed in real time, and the exhaust condition can be observed in real time, so that different exhaust speeds can be adopted for different exhaust stages, and oil injection is effectively avoided.
Specifically, because air is exhausted, a three-way valve 40 is additionally arranged for the temporary communication device for removing the transformer gas relay; the first end of three-way valve 40 can be dismantled with the one end of flexible connection pipe 30 and be connected, and the second end passes through the through-hole and can dismantle with first ring flange 10 or second ring flange 20 and be connected, and the third end is the gas vent, and the axis of first end and the axis collineation of second end, the axis of third end and the axis mutually perpendicular of first end. Through setting up three-way valve 40, provide an adjustable size's export for the discharge of air, not only can discharge the air effectively, can also control exhaust speed accurately. In this embodiment, three-way valve 40 is by one section longer circular straight tube, one section shorter circular straight tube and switch constitute, wherein the middle part at longer circular straight tube is connected perpendicularly to shorter circular straight tube, and form the intercommunication with longer circular straight tube in crossing department, the switch setting is on shorter circular straight tube, through the size of the shorter circular straight tube of control switch control and longer circular straight tube intercommunication mouth, thereby control exhaust velocity, in addition, the left end of longer circular straight tube is first end promptly, the right-hand member of longer circular straight tube is the second end promptly, the upper end of shorter circular straight tube is the third end promptly, can dismantle the connection in order to realize, set up the internal thread at the left end of circular straight tube, set up the third external screw thread at the right-hand member end of circular straight tube. The three-way valve 40 is more specifically used by: observe the exhaust condition through transparent flexible coupling pipe, open the switch on the three-way valve 40 completely when the exhaust begins to carry out quick exhaust with the biggest exhaust velocity, the exhaust is close to the end, and when transformer oil flowed into first flexible coupling pipe 31, the control switch was closed gradually, dwindled the gas vent in order to slow down exhaust velocity, avoid the oil spout.
Specifically, theoretically as long as set up a flexonics pipe 30, can communicate conservator and body oil tank, and let transformer buchholz relay demolish interim intercommunication device and possess the commonality, but the discovery in the in-service use, if only set up a flexonics pipe 30, need set up the pipe diameter that the pipe diameter of flexonics pipe 30 equals the pipe diameter of oil circuit pipeline, just can smoothly flow through transformer oil, but the bending degree of difficulty of the flexonics pipe 30 that this pipe diameter corresponds will increase, the pipe diameter is too big simultaneously, reserve for the air provides sufficient space, will not effectively discharge the air, the residual air can get into the body oil tank under driving about of transformer oil, directly lead to the oil spout even. In order to avoid this situation, the flexible connection pipe 30 is designed to be composed of a first flexible connection pipe 31 and a second flexible connection pipe 32, the pipe diameters of which are much smaller than the pipe diameters of the oil pipelines, so that the first flexible connection pipe 31 and the second flexible connection pipe 32 can be easily bent, wherein the first flexible connection pipe 31 mainly functions to exhaust air, and the second flexible connection pipe 32 mainly functions to exhaust oil, so that after the flexible connection pipe 30 is assembled, the first flexible connection pipe 31 is located above the second flexible connection pipe 32, so that the density of air is smaller than that of transformer oil, the air is always located above the transformer oil, and the air with lower density completely flows into the first flexible connection pipe 31 located above; correspondingly, the first hole end of the through hole is a first hole opening matched with the oil pipeline, the second hole end is a second hole opening 22 and a third hole opening 23, the first through hole and the second through hole in the flange plate can be understood as two through holes with smaller hole diameters formed in the bottom of a blind hole with larger hole diameter, the second hole opening is matched with the first flexible connecting pipe 31, the third hole opening 23 is matched with the second flexible connecting pipe 32, and the first end of the three-way valve 40 is connected with one end of the first flexible connecting pipe 31. In this embodiment, the oil pipeline is a circular pipeline, the first flexible connecting pipe 31 and the second flexible connecting pipe 32 are circular transparent pipes with equal pipe diameters, and correspondingly, the first orifice, the second orifice and the third orifice are circular ports, the diameter of the first orifice is equal to the pipe diameter of the oil pipeline, the diameter of the second orifice is equal to the pipe diameter of the first flexible connecting pipe 31, and the diameter of the third orifice is equal to the pipe diameter of the second flexible connecting pipe 32; the diameter of the second and third apertures is less than the radius of the first aperture so there is a space between the second and third apertures; because the air is always positioned right above the transformer oil, the second orifice is arranged right above the third orifice, namely the central connecting line of the second orifice and the third orifice is vertical to the ground, and because the air is positioned on the upper part of the oil pipeline, the first flexible connecting pipe 31 needs to be arranged at the position corresponding to the upper part of the oil pipeline, so that the maximum distance from the second orifice to the third orifice is set to be equal to the diameter of the first orifice, and thus, after the flexible connecting pipes are assembled, the first flexible connecting pipe 31 corresponds to the upper part of the oil pipeline, and the air can conveniently flow into the first flexible connecting pipe 31 from the oil pipeline.
Specifically, quick installation and dismantlement can be realized based on threaded connection's mode, and threaded connection easy operation easily realizes, so set up flexible connection pipe 30 and flange dish to realize dismantling the intercommunication through threaded connection. In this embodiment, in order to realize the threaded connection, 4 threaded connectors 50 are additionally provided for the temporary communication device for removing the transformer buchholz relay, and the threaded connectors 50 are of a structure provided with a threaded through hole and can be nuts; correspondingly, in order to be matched and connected with the internal thread on the threaded connecting piece 50, two threaded pipes 60 are arranged at the second hole end of the flange plate, one end of each threaded pipe 60 is aligned with the second hole or the third hole and is fixedly connected with the second hole end of the flange plate, and the other end of each threaded pipe 60 is provided with a first external thread; both ends of the flexible connecting pipe 30 are provided with second external threads; thus, the second end of the three-way valve 40 is connected to the threaded pipe 60 corresponding to the second port 22 of the second flange 20 by the threaded connector 50, the right end of the first flexible connecting pipe 31 is screwed into the first end of the three-way valve 40, the left end of the first flexible connecting pipe 31 is connected to the threaded pipe 60 corresponding to the second port of the first flange 10 by the threaded connector 50, and the left and right ends of the second flexible connecting pipe 32 of the threaded connector 50 are connected to the threaded pipes 60 corresponding to the third ports of the first flange 10 and the second flange 20, respectively, so that the detachable connection and communication can be realized.
Optionally, internal threads are disposed at the ends of the holes corresponding to the second port and the third port, matching external threads are disposed at the ends of the second end of the three-way valve 40 and the two ends of the flexible connection pipe, the internal threads at the ends of the holes corresponding to the second port 22 of the second flange 20 are connected with the external threads at the ends of the second end in a matching manner, the external threads at one end of the first flexible connection pipe 31 are connected with the internal threads at the first end of the three-way valve 40 in a matching manner, the external threads at the other end of the first flexible connection pipe 31 are connected with the internal threads at the ends of the holes corresponding to the second port of the first flange 10 in a matching manner, and the external threads at the two ends of the second flexible connection pipe are connected with the internal threads at the ends of the holes corresponding to the third ports of the first flange 10 and the second flange 20 in a matching manner, respectively. In this way, detachable communication and connection can be achieved as well.
Specifically, in order to observe the exhaust condition and the backflow condition of the transformer oil in real time, the flexible connection pipe 30 is made of a transparent material.
Specifically, since the connecting flanges on the oil line pipes are generally circular, in this embodiment, the first flange 10 and the second flange 20 are circular flanges; and 4 circular connecting holes which are uniformly distributed in the circumferential direction are formed in the first flange plate, and similarly, 4 circular connecting holes 24 which are uniformly distributed in the circumferential direction are formed in the second flange plate, and the aperture of the connecting holes in the flange plate is equal to that of the connecting holes in the connecting flange.
Example two
The embodiment one provides a transformer buchholz relay demolishs interim intercommunication device and has solved the commonality problem, but if adopt original operation flow-close buchholz relay both sides's butterfly valve, dismantle buchholz relay down, demolish interim intercommunication device and buchholz relay to transformer buchholz relay and dismantle, transformer oil between two butterfly valves will be when dismantling interim intercommunication device of buchholz relay or transformer buchholz relay down, demolish both ends and the port outflow of flange that interim intercommunication device from buchholz relay or transformer buchholz relay, need to accept the transformer oil of this part outflow with the household utensils, waste oil has not only been produced, cause the waste, still cause transformer oil to spatter all around easily, stain equipment. In order to solve the problem that the equipment is polluted due to waste oil generated in the dismounting process and the splashing of transformer oil, the embodiment provides a temporary communication method for dismounting a transformer gas relay.
Referring to fig. 3, a method for removing temporary connection of a transformer buchholz relay provided in this embodiment includes:
301. the oil level of the oil tank of the body is adjusted through a vacuum device, so that the oil level is lower than the bottom of the gas relay;
The vacuum device is used for pumping air in the oil conservator, so that negative pressure is formed in the oil conservator.
In this embodiment, vacuum apparatus adopts the vacuum pump, connect a vacuum pump in respirator department, and an oil drain valve department at the body oil tank connects a transparent oil level observation pipe, it is high to observe the pipe string with the oil level, make the open end of oil level observation pipe be higher than buchholz relay, the oil level in the oil level observation pipe is body oil tank and the balanced oil level of atmosphere promptly this moment, then, start the vacuum pump, take out the interior partial air of conservator, make the interior negative pressure that forms of conservator, make the transformer oil flow in the body oil tank to the conservator, when the intraductal oil level of oil level observation is than buchholz relay bottom 200 ~ 250mm, let the vacuum pump stop work.
302. Emptying transformer oil in the gas relay;
in this embodiment, the butterfly valve from the buchholz relay to the oil pillow side is closed, then the exhaust valve on the buchholz relay is opened, the transformer oil in the buchholz relay flows into the main body oil tank under the action of the atmospheric pressure, the exhaust valve stops sucking air, the transformer oil in the buchholz relay is confirmed to be emptied through the buchholz relay observation window, the buchholz relay is confirmed to be closed tightly to the oil pillow side, and the buchholz relay is disassembled. Before step 110, the secondary wiring of the buchholz relay needs to be disconnected, and insulation protection is made.
303. Mounting a transformer gas relay and dismantling the temporary communication device;
in this embodiment, the first flange plate 10 and the second flange plate 20 are respectively fixedly connected to two connection flanges on an oil pipeline by bolts and nuts, then the second end of the three-way valve 40 is connected to the threaded pipe 60 corresponding to the second orifice 22 of the flange plate on the side of the oil tank of the body by the threaded connector 50, then one end of the first flexible connection pipe 31 is screwed into the first end of the three-way valve 40, the other end of the first flexible connection pipe 31 is connected to the threaded pipe 60 corresponding to the second orifice 22 of the flange plate on the side of the conservator by the threaded connector 50, and the two ends of the second flexible connection pipe 32 are respectively connected to the threaded pipes 60 corresponding to the third orifices 23 of the first flange plate 10 and the second flange plate 20 by the threaded connector 50.
304. Controlling a valve at the side of the oil conservator to enable the transformer oil to flow into the body oil tank from the oil conservator;
in this embodiment, open the switch on the three-way valve 40 to restore atmospheric pressure in the conservator to atmospheric pressure, then slowly open buchholz relay to the butterfly valve of conservator side, discharge the air from the third end of three-way valve 40, after the air is completely discharged, close the switch of three-way valve 40, open buchholz relay to conservator side butterfly valve completely, and dismantle vacuum pump and oil level observation pipe down.
305. A gas relay is reassembled;
in the embodiment, a vacuum pump is installed at a breather, a transparent oil level observation pipe is connected to an oil discharge valve of a body oil tank, and the high oil level observation pipe is hung, so that the open end of an oil level observation officer is higher than the bottom of a transformer gas relay dismantling temporary communication device; then starting a vacuum pump, pumping out partial air in the oil conservator to form negative pressure in the oil conservator, enabling the transformer oil in the oil tank of the body to flow to the oil conservator, and stopping the vacuum pump when the oil level of the oil level observation pipe is lower than the bottom of the temporary communication device for dismantling the transformer gas relay; then, a butterfly valve from the transformer gas relay dismantling temporary communicating device to the oil pillow side is closed, a switch on the three-way valve 40 is opened, the internal pressure of the body oil tank and the radiator is increased, the transformer oil in the transformer gas relay dismantling temporary communicating device is discharged into the body oil tank through elastic rebound, and when the three-way valve 40 does not suck air any more, the transformer gas relay dismantling temporary communicating device is disassembled; then, replacing sealing rings on two sides of the gas relay, and fixedly connecting the gas relay qualified in inspection with a connecting flange on an oil way pipeline through the matching of bolts and nuts; then, the air pressure in the oil conservator is recovered to be the atmospheric pressure, an exhaust valve on the gas relay is opened, the gas relay is opened to a small amount of butterfly valves on the side of the oil conservator, after the gas relay is filled with transformer oil, the exhaust valve on the gas relay is closed, and the gas relay is completely opened to the butterfly valves on the side of the oil conservator; then, carrying out air exhaust of the conservator, namely filling air with the pressure of less than 15kpa into a breather connecting pipeline, opening an exhaust valve at the top of the conservator until oil is exhausted from the exhaust valve, and closing the exhaust valve; then detecting the running state of each valve, and reinstalling the respirator; then the secondary wiring of the gas relay is connected back, and whether the signal is normal or not is checked.
The beneficial effects of this embodiment: according to the method provided by the embodiment, before the temporary communication device or the gas relay is detached, the transformer oil in the transformer gas relay is emptied, so that a vessel is not needed to carry the transformer oil, the splashing of the transformer oil is effectively avoided, the waste of the transformer oil is effectively reduced, the environmental pollution is reduced, the construction environment is improved, and the serious oil leakage caused by untight closing of a butterfly valve is also avoided.
The above examples are only intended to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a transformer buchholz relay demolishs interim intercommunication device which characterized in that includes:
the first flange plate, the second flange plate and the flexible connecting pipe are arranged on the outer side of the first flange plate;
the first flange plate is provided with an axial first through hole matched with the flexible connecting pipe;
The second flange plate is provided with an axial second through hole matched with the flexible connecting pipe;
one end of the flexible connecting pipe is aligned with the first through hole and detachably communicated with the first flange plate, and the other end of the flexible connecting pipe is aligned with the second through hole and detachably communicated with the second flange plate.
2. The transformer gas relay dismantling temporary communication device according to claim 1, further comprising: a three-way valve;
the first end of three-way valve with the connection can be dismantled to the one end of flexonics pipe, the second end through the through-hole with first ring flange or the connection can be dismantled to the second ring flange, the third end is the gas vent, the axis of first end with the axis collineation of second end.
3. The transformer gas relay dismantling temporary communication device according to claim 2, wherein:
the flexible connection pipe includes: the first flexible connecting pipe and the second flexible connecting pipe are connected;
when the flexible connecting pipe is assembled, the first flexible connecting pipe is positioned above the second flexible connecting pipe;
the first hole end of the through hole is a first orifice matched with the oil pipeline, the second hole end of the through hole is a second orifice and a third orifice, the second orifice is matched with the first flexible connecting pipe, and the third orifice is matched with the second flexible connecting pipe;
The first end is connected with one end of the first flexible connecting pipe.
4. The transformer buchholz relay dismantling temporary connection device according to claim 3, wherein:
the first, second, and third apertures are circular ports;
the diameters of the second and third apertures are smaller than the radius of the first aperture;
the maximum distance from the second aperture to the third aperture is equal to the diameter of the first aperture.
5. The transformer gas relay dismantling temporary communication device according to claim 3, wherein:
the flexible connecting pipe and the flange plate are connected through threads to realize detachable communication.
6. The transformer gas relay dismantling temporary communication device according to claim 5, further comprising: a threaded connection;
the second hole end is provided with a threaded pipe, one end of the threaded pipe is aligned with the second hole opening or the third hole opening, and the other end of the threaded pipe is provided with a first external thread;
two ends of the flexible connecting pipe are both provided with second external threads;
the second end is provided with a third external thread;
one end of the threaded connecting piece is connected with the first external thread in a matched mode, and the other end of the threaded connecting piece is connected with the second external thread or the third external thread in a matched mode.
7. The transformer buchholz relay dismantling temporary communication device according to claim 1, wherein:
the flexible connecting pipe is made of transparent materials.
8. The transformer buchholz relay dismantling temporary communication device according to claim 1, wherein:
the flange plate is a circular flange plate;
the flange plate is provided with connecting holes which are uniformly distributed in the circumferential direction.
9. A transformer buchholz relay dismantling temporary communicating method, characterized in that communicating is performed by using the transformer buchholz relay dismantling temporary communicating apparatus according to any one of claims 1 to 8, comprising:
adjusting the oil level of the oil tank of the body through a vacuum device to enable the oil level to be lower than the bottom of the gas relay;
emptying the transformer oil in the gas relay;
disassembling the gas relay;
mounting the transformer gas relay and dismantling the temporary communication device;
and controlling a valve at the side of the oil conservator to enable the transformer oil to flow into the body oil tank from the oil conservator.
10. The method for temporarily connecting a transformer gas relay in a dismantling state as set forth in claim 9, wherein the step of controlling the valve on the side of the conservator to allow the transformer oil to flow from the conservator into the main body oil tank further comprises:
Adjusting the oil level of the main body oil tank through the vacuum device to enable the oil level to be lower than the bottom of the temporary communication device for dismantling the transformer gas relay;
emptying the transformer gas relay and removing the transformer oil in the temporary communication device;
disassembling the transformer gas relay to disassemble the temporary communication device;
installing the gas relay;
and controlling the valve to enable the transformer oil to flow into the body oil tank from the oil conservator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210147256.XA CN114517862B (en) | 2022-02-17 | 2022-02-17 | Temporary communication device and method for dismantling transformer gas relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210147256.XA CN114517862B (en) | 2022-02-17 | 2022-02-17 | Temporary communication device and method for dismantling transformer gas relay |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114517862A true CN114517862A (en) | 2022-05-20 |
| CN114517862B CN114517862B (en) | 2023-12-29 |
Family
ID=81598563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210147256.XA Active CN114517862B (en) | 2022-02-17 | 2022-02-17 | Temporary communication device and method for dismantling transformer gas relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114517862B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202217578U (en) * | 2011-09-02 | 2012-05-09 | 江山源光电气有限公司 | Oil immersed type transformer using soft connection between expansion tank and gas relay |
| CN202351401U (en) * | 2011-12-03 | 2012-07-25 | 国家电网公司运行分公司晋东南管理处 | Replacement communicating device for transformer gas relay testing |
| CN204144019U (en) * | 2014-09-04 | 2015-02-04 | 宁波宝新不锈钢有限公司 | A kind of oil passage connection structure of oil-filled transformer |
| CN206991898U (en) * | 2017-07-28 | 2018-02-09 | 山东印鸿电气有限公司 | Oil-filled transformer conservator fixed structure |
| CN208954752U (en) * | 2018-09-18 | 2019-06-07 | 岭东核电有限公司 | Million kilowatt nuclear power station transformer oil soaking system and test |
| CN209118992U (en) * | 2018-12-10 | 2019-07-16 | 国网山东省电力公司莒县供电公司 | A kind of light gas defect elimination device of on-load voltage regulation Buchholz relay |
-
2022
- 2022-02-17 CN CN202210147256.XA patent/CN114517862B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202217578U (en) * | 2011-09-02 | 2012-05-09 | 江山源光电气有限公司 | Oil immersed type transformer using soft connection between expansion tank and gas relay |
| CN202351401U (en) * | 2011-12-03 | 2012-07-25 | 国家电网公司运行分公司晋东南管理处 | Replacement communicating device for transformer gas relay testing |
| CN204144019U (en) * | 2014-09-04 | 2015-02-04 | 宁波宝新不锈钢有限公司 | A kind of oil passage connection structure of oil-filled transformer |
| CN206991898U (en) * | 2017-07-28 | 2018-02-09 | 山东印鸿电气有限公司 | Oil-filled transformer conservator fixed structure |
| CN208954752U (en) * | 2018-09-18 | 2019-06-07 | 岭东核电有限公司 | Million kilowatt nuclear power station transformer oil soaking system and test |
| CN209118992U (en) * | 2018-12-10 | 2019-07-16 | 国网山东省电力公司莒县供电公司 | A kind of light gas defect elimination device of on-load voltage regulation Buchholz relay |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114517862B (en) | 2023-12-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2014117611A1 (en) | Quick connector with flange for split air conditioner | |
| CN110258727A (en) | More compensation are without the pipe network pressure-superposed secondary water-supply complete set of equipments of negative pressure | |
| CN114517862A (en) | Temporary connection device and method for dismantling transformer gas relay | |
| CN208348728U (en) | A kind of municipal water supply pipeline convenient for construction | |
| CN212132020U (en) | Low-voltage electric ventilation flushing equipment | |
| CN219472998U (en) | Partition control valve for water mist fire extinguishing equipment | |
| CN210950129U (en) | Oil gas pipeline receiving and dispatching ball section of thick bamboo exhaust apparatus | |
| CN112382471A (en) | Transformer accessory oil maintenance device and use method thereof | |
| CN209650148U (en) | One kind being used for lodging vehicle water route current divider | |
| CN214743510U (en) | Transmission structure of current divider | |
| CN210448480U (en) | Filter for gas pressure regulating box | |
| CN212340373U (en) | Anti-blocking device for magnetic turning plate liquid level meter | |
| CN217699226U (en) | Drainage mechanism for isolator and isolator | |
| CN220620283U (en) | Intelligent automatic water pump station | |
| CN218713581U (en) | Non-negative pressure pressurized water supply device with single tank body and water tank type structure | |
| CN110455470B (en) | Pipeline installation connecting assembly for gas detection and detection method thereof | |
| CN210762330U (en) | Collecting device for producing printing ink | |
| CN220835973U (en) | Air flow mill device | |
| CN218440929U (en) | External water tank water inlet control device | |
| CN220142739U (en) | Filtration equipment convenient for filter screen replacement | |
| CN214940679U (en) | High-rise bidirectional constant-pressure water supply equipment | |
| CN215111219U (en) | Pipeline installation structure convenient to it is fixed | |
| CN214368049U (en) | Oil injection and discharge port switch | |
| CN219975576U (en) | Safe and reliable two-way speed regulation hydraulic valve group | |
| CN221267416U (en) | Filter device of non-negative pressure water supply equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |