CN109346286B - Transformer with shock-absorbing feet - Google Patents
Transformer with shock-absorbing feet Download PDFInfo
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- CN109346286B CN109346286B CN201811251833.XA CN201811251833A CN109346286B CN 109346286 B CN109346286 B CN 109346286B CN 201811251833 A CN201811251833 A CN 201811251833A CN 109346286 B CN109346286 B CN 109346286B
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- helium
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- 239000001307 helium Substances 0.000 claims abstract description 49
- 229910052734 helium Inorganic materials 0.000 claims abstract description 49
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims abstract description 49
- 239000007788 liquid Substances 0.000 claims abstract description 47
- 238000002156 mixing Methods 0.000 claims abstract description 37
- 239000007789 gas Substances 0.000 claims abstract description 32
- 230000035939 shock Effects 0.000 claims abstract description 29
- 230000017525 heat dissipation Effects 0.000 claims abstract description 22
- 238000000926 separation method Methods 0.000 claims abstract description 5
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 239000012528 membrane Substances 0.000 claims abstract description 4
- 239000003921 oil Substances 0.000 claims description 316
- 238000007789 sealing Methods 0.000 claims description 35
- 238000004891 communication Methods 0.000 claims description 34
- 230000006835 compression Effects 0.000 claims description 29
- 238000007906 compression Methods 0.000 claims description 29
- 230000007246 mechanism Effects 0.000 claims description 16
- 238000001514 detection method Methods 0.000 claims description 13
- 239000010687 lubricating oil Substances 0.000 claims description 11
- 238000010521 absorption reaction Methods 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 6
- 230000005291 magnetic effect Effects 0.000 claims description 5
- 239000004519 grease Substances 0.000 claims description 4
- 230000005294 ferromagnetic effect Effects 0.000 claims description 3
- 230000001965 increasing effect Effects 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 9
- 230000009467 reduction Effects 0.000 abstract description 2
- 238000013016 damping Methods 0.000 description 13
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 6
- 238000003825 pressing Methods 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 210000002445 nipple Anatomy 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/20—Cooling by special gases or non-ambient air
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
- H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention discloses a transformer with shock-absorbing feet, comprising: the transformer cabinet body and the heat dissipation device positioned at one side of the transformer cabinet body, wherein the heat dissipation device comprises a gas-liquid storage tank, a gas-liquid mixing device and a plurality of heat dissipation pipes, and the gas-liquid mixing device is used for mixing helium with heat conduction oil and then inputting the mixed helium into the heat dissipation pipes; the gas-liquid storage tank is internally provided with a helium gas containing cavity positioned at the upper part and a heat conducting oil containing cavity positioned at the lower part, helium gas in the helium gas containing cavity is connected with a gas-liquid mixing device through an air inlet pipeline, heat conducting oil in the heat conducting oil containing cavity is connected with the gas-liquid mixing device through a feeding pipeline, the gas-liquid mixing device is externally connected with a radiating pipe through a discharging pipeline, the radiating pipe comprises an inner pipe and an oil guiding part, the oil guiding part is provided with a plurality of through holes, the outer surface of the oil guiding part is coated with a gas-liquid separation filter membrane, the outer part of the oil guiding part is provided with an air guide pipe, the top of the air guide pipe is connected with the helium gas containing cavity through an air return pipeline, the oil guiding part is connected with the heat conducting oil containing cavity through an oil return pipeline, and the transformer body is provided with shock absorbing feet. The invention improves the heat dissipation efficiency of the transformer and has good vibration reduction effect.
Description
Technical Field
The invention relates to the field of transformer instruments, in particular to a transformer with shock-absorbing legs.
Background
A Transformer (Transformer) is a device for changing an ac voltage using the principle of electromagnetic induction, and the main components are a primary coil, a secondary coil, and an iron core (magnetic core). The main functions are as follows: voltage transformation, current transformation, impedance transformation, isolation, voltage stabilization (magnetic saturation transformers), and the like. The method can be divided into the following according to the purposes: power transformers and special transformers (electric furnace transformers, rectifier transformers, power frequency test transformers, voltage regulators, mining transformers, audio transformers, medium frequency transformers, high frequency transformers, impact transformers, instrument transformers, electronic transformers, reactors, transformers, etc.).
In the prior art, the bottom temperature of the transformer is high, and the top temperature is low; heat dissipation methods for transformers often use heat transfer oil for heat dissipation, which is present but has a high viscosity, resulting in slow liquid flow, and heat dissipation mainly to heat transfer, and heat dissipation efficiency is low.
Disclosure of Invention
The invention provides a transformer with shock absorbing legs, which solves the defects of low heat dissipation efficiency and poor shock absorption effect of the existing transformer.
In order to solve the above problems, the present invention discloses a transformer with shock absorbing legs, comprising: the transformer cabinet body and the heat dissipation device positioned at one side of the transformer cabinet body, wherein the heat dissipation device comprises a gas-liquid storage tank, a gas-liquid mixing device and a plurality of heat dissipation pipes, and the gas-liquid mixing device is used for mixing helium with heat conduction oil and then inputting the mixed helium into the heat dissipation pipes; the gas-liquid storage tank is internally provided with a helium containing cavity at the upper part and a heat conducting oil containing cavity at the lower part, helium in the helium containing cavity is connected with a gas-liquid mixing device through an air inlet pipeline, heat conducting oil in the heat conducting oil containing cavity is connected with the gas-liquid mixing device through a feeding pipeline, the gas-liquid mixing device is externally connected with a radiating pipe through a discharging pipeline, the radiating pipe comprises an inner pipe, an oil guide part converging from the middle part to the top end is arranged at the upper part of the inner pipe, a plurality of through holes are formed in the oil guide part, the outer surface of the oil guide part is coated with a gas-liquid separation filter membrane, an air guide pipe with the outer diameter gradually increased from the middle part to the top part of the radiating pipe is arranged at the outer part of the oil guide part, and the bottom end of the air guide pipe is connected with the lower end of the oil guide part; the top of the air guide pipe is connected with the helium cavity through an air return pipeline, and the oil guide part is connected with the heat conduction oil cavity through an oil return pipeline; the oil return pipeline is provided with an oil pump for extracting heat conduction oil and returning the heat conduction oil into the heat conduction oil containing cavity, and the transformer cabinet body is provided with shock absorbing feet. According to the invention, helium and heat conduction oil are adopted to dissipate heat of the transformer cabinet body through the heat dissipation pipe, the helium gradually diverges to the top to escape in the movement from bottom to top, and a large amount of heat is taken away in the process (the volume is changed from small to large), so that the heat dissipation efficiency is greatly improved, the molecular weight of the helium is small, the gas viscosity is small, and the helium moves rapidly in the heat conduction oil and is not easy to be viscous. The shock-absorbing feet are arranged, so that the shock-absorbing effect is good.
The top of the air duct is provided with an arc-shaped curved surface. The top of the heat conducting pipe adopts an arc-shaped curved surface, so that dead angles are not easy to exist, the heat conducting pipe is more matched with the bubble contact surface of the sphere, gas is not easy to stay, and the backflow efficiency is improved.
Preferably, the gas-liquid mixing device comprises an inner oil pipe and a helium cylinder, wherein a gas storage cavity is formed in the cylinder wall of the helium cylinder, and the front end of the gas storage cavity is connected with an air inlet pipeline; the rear end of the helium cylinder is connected with a conical pipe, an air guide cavity is arranged in the pipe wall of the conical pipe, one end of the air guide cavity is communicated with the air storage cavity, and the other end of the air guide cavity is led into the oil pipe which penetrates deep into the inner pipe along the pipe wall of the conical pipe. The gas-liquid mixing device has high mixing efficiency, brings gas into mixing under the traction of liquid, and does not need external driving force.
Preferably, the angle between the inner side wall of the conical tube and the central axis of the oil guide tube is 45 degrees.
Preferably, the air inlet pipeline is provided with a gas compression pump for compressing the volume of the gas. The volume of helium is compressed by the gas compression pump, the pressure is improved, and the heat absorption effect in the bottom-up diffusion process is improved.
Preferably, the radiating pipes are arranged on one side of the transformer cabinet body in parallel.
Preferably, the number of the radiating pipes is 6.
Preferably, the shock absorbing foot comprises a rod-shaped supporting foot, a supporting sleeve is sleeved on the supporting foot, the upper end of the supporting sleeve is connected with the transformer cabinet body, a blind hole is formed in the upper end face of the supporting foot, a shock absorbing spring which stretches out and draws back along the up-down direction and a compression plate which is connected with the shock absorbing spring in a sliding sealing mode are arranged in the blind hole, the compression plate is connected with the transformer cabinet body through a connecting rod, a supporting foot oil chamber and a refueling bucket which is arranged above a grease storage cavity are isolated in the blind hole by the compression plate, the shock absorbing spring is arranged in an oil chamber of the supporting foot, an oil outlet hole penetrating through the supporting foot oil chamber is formed in the side wall of the blind hole, a plug and a driving plug are arranged in the oil outlet hole to move towards the supporting foot oil chamber so as to seal the oil outlet hole, a compression plate one-way valve which is opened towards the supporting foot is arranged in the blind hole, an annular oil receiving groove which extends along the circumference of the supporting foot and is arranged below the supporting foot, the supporting foot is provided with an annular oil receiving groove which is communicated with the supporting foot oil chamber and the oil return hole which is arranged in the supporting foot oil chamber. Provides a specific technical scheme of the shock absorbing foot.
The support sleeve is sleeved on the support leg, so that the shock absorbing leg can only move along the expansion and contraction direction of the shock absorbing spring without radial swing. When in use, the oil chamber of the supporting foot is filled with lubricating oil, and the lubricating oil is automatically extruded out in the process of expanding and contracting the damping spring so as to lubricate the supporting foot and the supporting sleeve. The compression plate part check valve is arranged, so that gas can enter the supporting foot oil chamber when the damping spring is reset to compensate the pressure drop in the supporting foot oil chamber caused by oil output, and the phenomenon that the damping spring is insufficient in pressure and cannot extrude oil when being contracted next time is avoided. The annular oil receiving groove collects the output excessive oil, and the oil collected in the spring stretching process can flow back into the supporting foot oil cavity.
Preferably, the support leg and the connecting piece sleeve are in cylindrical surface fit. It is possible to prevent circumferential rotation between the support sleeve and the support foot.
Preferably, the shock absorbing foot further comprises an automatic oiling mechanism for adding lubricating oil to the oiling bucket, the automatic oiling mechanism comprises a horizontal telescopic cylinder, an oil nozzle, an oil tank and an oil pump for enabling oil in the oil tank to flow out from the oil nozzle, the oil nozzle comprises an oil nozzle body with a vertically arranged rod-shaped structure, the upper end of the oil nozzle body is connected with the transformer cabinet body, an outer gear ring is rotationally connected to the outer surface of the oil nozzle body, an oil duct is arranged in the oil nozzle body, the oil duct penetrates through the peripheral surface of the oil nozzle body to form an oil outlet above the oiling bucket, the oil duct is further provided with an oil inlet penetrating through the oil nozzle body, the oil inlet is connected with the outlet end of the oil pump, the inlet of the oil pump is connected with an oil outlet plug for sealing the oil outlet through an elastic supporting foot, the oil outlet plug is abutted to the oil outlet under the elastic action of the elastic supporting foot when aligned with the oil outlet, and the piston rod is sealed, and a transverse rack meshed with the piston rod ring is arranged on the horizontal telescopic cylinder. When in use, the lubricating oil is filled in the oil-free chamber of the support foot, and the lubricating oil is automatically extruded out in the process of expanding and contracting the damping spring, so that the lubrication between the support foot and the support sleeve is realized. The compression plate is not provided with the one-way valve, so that gas can enter the supporting foot oil chamber when the damping spring is reset to compensate the pressure drop in the supporting foot oil chamber caused by oil output, and the phenomenon that the damping spring is insufficient in pressure and cannot extrude oil when being contracted next time is avoided. The oil can be supplemented to the supporting foot oil chamber. According to the oil nozzle in the technical scheme, the phenomenon that oil remained in the oil nozzle leaks when oil adding is stopped can be prevented. The oil outlet plug is convenient to switch, and the phenomenon of losing the oil outlet plug is not easy to occur.
Preferably, a negative pressure cavity is arranged in the oil outlet plug, the oil outlet plug is provided with a plurality of communication holes which are used for communicating the inside of the oil outlet with the negative pressure cavity when the oil outlet plug is sealed in the oil outlet and a communication hole sealing cover which is made of ferromagnetic iron and covers the communication holes, the communication hole sealing cover is provided with a sliding pin which penetrates through the oil outlet plug, the negative pressure cavity is internally provided with a sealing cover closing spring which is connected with the sliding pin and drives the communication hole sealing cover to cover the communication holes, an electromagnet which adsorbs the communication hole sealing cover to enable the communication hole sealing cover to open is arranged in the oil duct, the upper end of the oil nozzle body is connected with a transformer cabinet body through a horizontal hinge shaft, two transverse racks are arranged, a pushing block which pushes the oil nozzle body is further arranged on a piston rod of the telescopic cylinder, and drives the rack to drive the outer gear to rotate until the oil outlet plug is sealed after the oil outlet plug is abutted to the oil nozzle body to enable the cylinder to further drive the oil nozzle body to rotate with the communication hole as a shaft to face upwards, and the electromagnet generates magnetic force to attract the sealing cover to enable the communication hole to open. After the oil outlet is covered by the oil outlet plug, negative pressure is generated in the oil outlet, so that the sealing effect of the oil outlet plug is improved. According to the technical scheme, the negative pressure cavity is positioned above the oil nozzle when the negative pressure cavity is opened, so that oil cannot enter the negative pressure cavity, and the negative pressure effect of the negative pressure cavity is reduced too much or even fails when the oil is secondarily used. Before the oil outlet plug is opened, the electromagnet is powered off to enable the communication hole sealing cover to cover the communication hole again, so that poor negative pressure effect caused by air entering is prevented.
Preferably, the automatic oiling mechanism further comprises a control module, the control module comprises a controller, a vertical rack connected to the transformer cabinet body, a gear meshed with the vertical rack and a detection mechanism for detecting the number of turns of the gear, the gear is connected to the supporting foot through a one-way roller, and when the detection mechanism detects the number of turns set by the rotation of the gear, the controller enables the oil pump and the oil nozzle to be started for a set time length, so that lubricating oil in the oil tank is output from the oil nozzle through the oil pump and is added into the oiling bucket. The lubricant can be automatically replenished according to the accumulated vibration stroke amount.
Preferably, the transformer cabinet body is connected with a vibration-damping spring pre-pressing bolt which is abutted on the upper end face of the connecting rod in a threaded manner. The cushion spring can be preloaded to adjust stiffness.
Preferably, the inlet of the oil return hole is located above the bottom wall of the annular oil receiving groove. Can make the greasy filth be difficult to the back support foot not oil pocket when backward flow oil.
Preferably, a filter screen is arranged at the inlet end of the support foot one-way valve. The cleanliness of the recovered oil can be improved.
Compared with the prior art, the technical scheme has the following advantages:
1. according to the invention, helium and heat conduction oil are adopted to dissipate heat of the transformer cabinet body through the heat dissipation pipe, the helium gradually diverges to the top to escape in the movement from bottom to top, and a large amount of heat is taken away in the process (the volume is changed from small to large), so that the heat dissipation efficiency is greatly improved, the molecular weight of the helium is small, the gas viscosity is small, and the helium moves rapidly in the heat conduction oil and is not easy to be viscous.
2. The top of the heat conducting pipe adopts an arc-shaped curved surface, so that dead angles are not easy to exist, the heat conducting pipe is more matched with the bubble contact surface of the sphere, gas is not easy to stay, and the backflow efficiency is improved.
3. The gas-liquid mixing device has high mixing efficiency, brings gas into mixing under the traction of liquid, and does not need external driving force.
4. The volume of helium is compressed by the gas compression pump, the pressure is improved, and the heat absorption effect in the bottom-up diffusion process is improved.
The shock absorbing foot of the invention has little abrasion when being vibrated to generate lifting, and the lubricating oil can be recycled.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic top view of a heat pipe according to the present invention.
Fig. 3 is a schematic view of a partial enlarged structure of a gas-liquid mixing device according to the present invention.
FIG. 4 is a schematic cross-sectional view of a shock absorbing foot of the present invention.
Fig. 5 is a schematic view of the spout in an open state.
Fig. 6 is a schematic view of the nipple in a closed state with the communication hole sealing cover still covering the communication hole.
FIG. 7 is a schematic view showing the state that the nipple is closed and the communicating hole sealing cover is opened
The heat dissipating device 1, the gas-liquid storage tank 2, the discharge line 10, the inner tube 11, the oil guide 12, the through hole 13, the gas-liquid separation filter 14, the gas guide 15, the oil return line 16, the oil pump 17, the inner oil tube 18, the helium tube 19, the gas storage chamber 20, the conical tube 22, the gas guide chamber 23, the gas compression pump 24, the nozzle body 31, the oil passage 311, the oil outlet 312, the oil inlet 313, the outer gear ring 32, the elastic support leg 33, the oil outlet plug 34, the communication hole 341, the communication hole sealing cover 342, the sliding pin 343, the sealing cover closing spring 344, the negative pressure chamber 345, the electromagnet 35, the horizontal hinge 36, the support leg 4, the oil receiving groove 41, the blind hole 42, the support leg oil chamber 421, the fueling hopper 423 plug 424, oil outlet hole closing spring 425, oil outlet hole 426, vibration damping spring 43, connecting rod 44, oil return hole 45, vibration damping spring pre-pressing bolt 46, connecting seat 47, supporting foot check valve 48, filter screen 49, supporting sleeve 5, connecting plate 54, transformer cabinet 56, compression plate 6, compression plate check valve 61, horizontal telescopic cylinder 7, push block 71, horizontal rack 72, control module 8, controller 81, vertical rack 82, gear 83, detection mechanism 84, inductive switch 841, detection block 842, gas-liquid mixing device 93, return air pipe 94, heat pipe 95, helium chamber 96, heat conducting oil chamber 97, air inlet pipe 98, and feed pipe 99.
Detailed Description
The invention is further described with reference to the drawings and examples.
Referring to fig. 1, 2 and 3, a transformer with shock absorbing legs, comprising: the transformer cabinet body 9 and the heat abstractor 1 that is located transformer cabinet body one side, heat abstractor includes gas-liquid storage tank 2, gas-liquid mixing device 93 and a plurality of cooling tube 95, and the cooling tube is 6. The gas-liquid mixing device is used for mixing helium with heat conduction oil and then inputting the mixture into the radiating pipe; the gas-liquid storage tank is internally provided with a helium containing cavity 96 positioned at the upper part and a heat conducting oil containing cavity 97 positioned at the lower part, helium in the helium containing cavity is connected with a gas-liquid mixing device through an air inlet pipeline 98, heat conducting oil in the heat conducting oil containing cavity is communicated with the gas-liquid mixing device through a feeding pipeline 99, the gas-liquid mixing device is externally connected with a radiating pipe through a discharging pipeline 10, the radiating pipe comprises an inner pipe 11, an oil guiding part 12 converging from the middle part to the top is arranged at the upper part of the inner pipe, a plurality of through holes 13 are formed in the oil guiding part, the outer surface of the oil guiding part is coated with a gas-liquid separation filter membrane 14, an air guiding pipe 15 with the outer diameter gradually increasing from the middle part to the top of the radiating pipe is arranged at the outer part of the oil guiding part, and the bottom end of the air guiding pipe is connected with the lower end of the oil guiding part; the top of the air duct is connected with the helium cavity through an air return pipeline 94, and the top of the air duct is provided with an arc-shaped curved surface. The oil guide part is connected with the heat-conducting oil containing cavity through an oil return pipeline 16; the oil return pipeline is provided with an oil pump 17 for extracting heat conduction oil and returning the heat conduction oil into the heat conduction oil containing cavity. In the embodiment of the invention, the helium cavity and the heat conducting oil cavity are separated.
The gas-liquid mixing device comprises an inner oil pipe 18 and a helium cylinder 19, wherein a gas storage cavity 20 is formed in the cylinder wall of the helium cylinder, and the front end of the gas storage cavity is connected with a gas inlet pipeline; the rear end of the helium cylinder is connected with a conical tube 22, an air guide cavity 23 is arranged in the tube wall of the conical tube, one end of the air guide cavity is communicated with the air storage cavity, and the other end of the air guide cavity is led into an oil tube which penetrates deep into the inner wall of the conical tube along the tube wall. The angle between the inner side wall of the conical tube and the central axis of the oil guide tube is 45 degrees. The air inlet pipe is provided with a gas compression pump 24 for compressing the volume of gas. The radiating pipes are arranged on one side of the transformer cabinet body in parallel.
When the embodiment of the invention is implemented, helium in a helium containing cavity positioned at the upper part in the gas-liquid storage tank enters the gas-liquid mixing device through a gas compression pump inlet pipeline; the heat conducting oil in the heat conducting oil containing cavity is connected with the air-liquid mixing device through the feeding pipeline, enters the radiating fin after being pressurized and mixed, and helium and the heat conducting oil are separated after passing through the oil conducting part and the air conducting pipe of the radiating pipe and return to the helium containing cavity or the heat conducting oil containing cavity.
Referring to fig. 1, 4, 5, 6 and 7, the end of the transformer body 9 is provided with 4 shock absorbing feet. The shock absorbing foot includes a support foot 4. The supporting feet are sleeved with supporting sleeves 5. The support leg is provided with an oil receiving groove 41. The annular oil receiving groove is positioned below the supporting sleeve. The support sleeve is provided with two connecting plates 54 which are evenly distributed along the circumferential direction of the support sleeve. The lower end of the supporting leg 4 is provided with a connecting seat 47. When in use, one of the two objects which are needed to be connected together in a vibration reduction way is connected with the connecting seat, and the other object is connected with the supporting sleeve. The upper ends of the connecting bars are connected with the transformer cabinet 56. The transformer cabinet body is located above the supporting legs. The supporting legs 4 are of regular hexagonal prism structures, and the supporting legs and the connecting piece sleeve are matched with each other in prismatic surfaces.
The upper end surface of the supporting leg is provided with a blind hole 42. A vibration damping spring 43 which stretches in the up-down direction is arranged in the blind hole. The vibration damping spring is internally penetrated with a connecting rod 44. The connecting rod is provided with a compression plate 6. The transformer cabinet is connected with a vibration damping spring pre-pressing bolt 46 which is abutted on the connecting rod through threads.
The compression plate 6 is slidably and sealingly connected within the blind bore 42. The compression plate isolates in the blind hole a supporting foot oil chamber 421 and a filling hopper 423 located above the fat storage chamber. The damper spring 43 is located in the foot supporting oil chamber and supported on the lower surface of the compression plate. The side wall of the blind hole is provided with an oil outlet 426 penetrating through the supporting foot oil chamber. A plug 424 and an oil outlet closing spring 425 for driving the plug to move towards the oil chamber of the supporting foot to close the oil outlet are arranged in the oil outlet. The compression plate is provided with a compression plate check valve 61 that opens toward the supporting foot oil chamber. The support leg is provided with an oil return hole 45 communicating the annular oil receiving groove and the support leg oil chamber. The oil return hole is provided with a support leg check valve 48 which opens into the support leg oil chamber. The inlet end of the support foot check valve 48 is provided with a filter screen 49. The inlet of the oil return hole is positioned above the bottom wall of the annular oil receiving groove. When the damping spring contracts, lubricating oil flows out through the oil outlet to lubricate the matching part of the supporting leg and the connecting piece sleeve, and redundant oil drops leak into the oil receiving groove. When the spring stretches, oil in the annular oil receiving groove flows back into the supporting foot oil cavity through the supporting foot check valve, and air enters the supporting foot oil cavity through the compression plate check valve to maintain pressure.
The present embodiment also includes an automatic oiling mechanism for adding grease to the hopper. The automatic oiling mechanism comprises a nozzle tip 3, a horizontal telescopic cylinder 7, a control module 8, an oil tank and an oil pump (the oil tank and the oil pump are not shown in the drawing).
The spout 3 includes a spout body 31. The oil nozzle body is of a rod-shaped structure and is vertically arranged. The upper end of the oil nozzle body is connected with the transformer cabinet body through a horizontal hinge shaft 36. An outer gear ring 32 is rotatably connected to the outer surface of the nozzle body.
The oil nozzle body is internally provided with an oil passage 311. The oil passage penetrates through the side surface of the nozzle body to form an oil outlet 312. The oil outlet is positioned above the bucket. The other end of the oil passage penetrates through the surface of the nozzle body to form an oil inlet 313. The oil inlet is connected with the outlet end of the oil pump, and the inlet end of the oil pump is connected with the oil tank.
The outer gear ring is connected with an oil outlet plug 34 for closing the oil outlet through an elastic supporting leg 33. When the oil outlet plug is aligned with the oil outlet, the oil outlet plug is abutted on the oil outlet under the elastic action of the elastic supporting leg to seal the oil outlet. The oil outlet plug is spherical. A negative pressure cavity 345 is arranged in the oil outlet plug and is filled with lubricating oil. The upper end of the oil outlet plug is provided with a plurality of communication hole 341 which is used for communicating the interior of the oil outlet with the negative pressure cavity when the oil outlet plug is sealed in the oil outlet and a communication hole sealing cover 342 which is made of ferromagnetic iron and used for covering the communication hole. The communicating hole sealing cover is provided with a sliding pin 343 penetrating through the oil outlet plugging head. The oil outlet plug is internally provided with a sealing cover closing spring 344 which is connected with the sliding pin and drives the sealing cover of the communication hole to cover the communication hole. An electromagnet 35 for adsorbing the communicating hole sealing cover to open the communicating hole sealing cover is arranged in the oil duct.
The piston rod of the horizontal telescopic cylinder 7 is provided with a push block 71 and two transverse racks 72. The two annular racks are distributed along the axial direction of the outer gear ring and meshed with the outer gear ring. The disconnection distance between the two annular racks is more than 7 cm, so that the accuracy in driving can be more effectively prevented from being influenced by swinging of the nozzle body in the process of rotating the outer gear ring.
When the oil duct outlet is required to be opened, the electromagnet is powered off firstly to enable the communication hole to be covered by the communication hole sealing cover under the action of the closing spring of the sealing plate, so that the negative pressure effect in the negative pressure cavity is maintained, the horizontal telescopic cylinder drives the horizontal rack to translate, the horizontal rack drives the outer gear ring to rotate, the outer gear ring drives the elastic support leg to rotate, and the oil outlet plug is staggered with the oil duct outlet. When the oil duct outlet is required to be closed, the horizontal telescopic cylinder drives the transverse rack to translate, the transverse rack drives the outer gear ring, the outer gear ring drives the elastic supporting leg to rotate, and therefore the oil outlet plug is aligned with the oil duct outlet, and the oil outlet plug covers the oil duct outlet under the elastic action of the elastic supporting leg. The outer gear ring is driven by the transverse rack to rotate, and the push block is abutted to the glib body when the oil outlet plug is sealed on the oil outlet, so that the transverse rack can not drive the outer gear ring to rotate, the result of further movement of the telescopic cylinder is that the push block drives the glib body to rotate by taking the hinge shaft as the shaft, the result of rotation is that the glib body is in an upward oil outlet state, the electromagnet is enabled to generate magnetic force after the oil outlet is upward to attract the communication hole sealing cover to enable the communication hole sealing cover to be opened, the pressure inside the oil outlet is reduced after the communication hole sealing cover is opened, and the descending result is that the oil outlet plug more reliably seals the oil outlet under the action of pressure difference.
The control module 8 comprises a controller 81, a vertical rack 82 connected to the transformer cabinet, a gear 83 meshed with the vertical rack, and a detection mechanism 84 for detecting the number of turns of the gear. The gear is connected to the supporting leg through a unidirectional roller. The detection mechanism 84 includes an inductive switch 841 and a detection block 842 provided on the gear. When the gear rotates to the detection block and approaches to the sensing switch to be nearest to the detection block, the sensing switch senses and inputs signals to the controller, and the sensing switch senses that the detection block once indicates that the gear rotates one circle. The controller is electrically connected with the sensing switch, the electromagnetic valve for controlling the telescopic cylinder, the electromagnetic valve and the oil pump.
When the oil gun is used, when the rotation number of the gear detected by the detection mechanism reaches the integral multiple of the set number of turns, the controller enables the oil pump and the oil nozzle to be started for a set period of time, so that lubricating grease in the oil chamber of the oil gun part is added into the oil filling hopper through the oil nozzle. For example, if the set number of turns is 10, the gear is turned for 10 turns, the oil nozzle and the entering electric valve are turned off after the set time period is opened, the oil nozzle and the entering electric valve are turned for 20 turns, the oil nozzle and the entering electric valve are turned off after the set time period is opened, the oil nozzle and the entering electric valve are turned for 30 turns, and the like.
Claims (8)
1. A transformer with shock absorbing legs, comprising: the transformer cabinet body and the heat dissipation device positioned at one side of the transformer cabinet body, wherein the heat dissipation device comprises a gas-liquid storage tank, a gas-liquid mixing device and a plurality of heat dissipation pipes, and the gas-liquid mixing device is used for mixing helium with heat conduction oil and then inputting the mixed helium into the heat dissipation pipes; the gas-liquid storage tank is internally provided with a helium containing cavity at the upper part and a heat conducting oil containing cavity at the lower part, helium in the helium containing cavity is connected with a gas-liquid mixing device through an air inlet pipeline, heat conducting oil in the heat conducting oil containing cavity is connected with the gas-liquid mixing device through a feeding pipeline, the gas-liquid mixing device is externally connected with a radiating pipe through a discharging pipeline, the radiating pipe comprises an inner pipe, an oil guide part converging from the middle part to the top end is arranged at the upper part of the inner pipe, a plurality of through holes are formed in the oil guide part, the outer surface of the oil guide part is coated with a gas-liquid separation filter membrane, an air guide pipe with the outer diameter gradually increased from the middle part to the top part of the radiating pipe is arranged at the outer part of the oil guide part, and the bottom end of the air guide pipe is connected with the lower end of the oil guide part; the top of the air guide pipe is connected with the helium cavity through an air return pipeline, and the oil guide part is connected with the heat conduction oil cavity through an oil return pipeline; the oil return pipe is provided with an oil pump for extracting heat conduction oil and flowing back into the heat conduction oil accommodating cavity, the transformer cabinet body is provided with a shock absorption foot, the air inlet pipe is provided with a gas compression pump for compressing the volume of gas, the shock absorption foot comprises a rod-shaped supporting foot, the supporting foot is sleeved with a supporting sleeve, the upper end of the supporting sleeve is connected with the transformer cabinet body, the upper end face of the supporting foot is provided with a blind hole, a vibration absorption spring stretching along the up-down direction and a compression plate which is connected with the vibration absorption spring in a sliding sealing manner are arranged in the blind hole and are pressed on the vibration absorption spring, the compression plate is connected with the transformer cabinet body together through a connecting rod, the compression plate is located in the blind hole and is provided with an oil filling hopper located above a grease storage cavity, the vibration absorption spring is located in the oil chamber of the supporting foot, the side wall of the blind hole is provided with an oil outlet hole penetrating through the supporting foot, the oil outlet hole is internally provided with a plug and drives to move towards the supporting foot oil chamber and is closed, the compression plate is arranged on the upper end face of the supporting foot, the compression plate is connected with a compression plate part stretching towards the supporting foot along the up-down direction, the lower end of the compression plate is provided with an annular oil return groove extending towards the supporting foot chamber, and the oil return pipe extends towards the oil return chamber is located in the supporting foot chamber, and extends towards the annular oil return chamber is located in the supporting foot chamber, and extends towards the supporting foot chamber.
2. The transformer with shock absorbing legs according to claim 1, wherein the top of the air duct has an arc-shaped curved surface.
3. The transformer with shock absorbing feet according to claim 1, wherein the gas-liquid mixing device comprises an inner oil pipe and a helium cylinder, a gas storage cavity is arranged in the cylinder wall of the helium cylinder, and the front end of the gas storage cavity is connected with an air inlet pipeline; the rear end of the helium cylinder is connected with a conical pipe, an air guide cavity is arranged in the pipe wall of the conical pipe, one end of the air guide cavity is communicated with the air storage cavity, and the other end of the air guide cavity is led into the oil pipe which penetrates deep into the inner pipe along the pipe wall of the conical pipe.
4. A transformer with shock absorbing legs as set forth in claim 3, wherein the angle between the inner side wall of said conical tube and the central axis of the oil guide tube is 45 °.
5. The transformer with shock absorbing foot according to claim 1, 2, 3 or 4, wherein the shock absorbing foot further comprises an automatic oiling mechanism for adding lubricating oil to the oiling bucket, the automatic oiling mechanism comprises a horizontal telescopic cylinder, an oil nozzle, an oil tank and an oil pump for enabling oil in the oil tank to flow out of the oil nozzle, the oil nozzle comprises an oil nozzle body with a vertically arranged rod-shaped structure, the upper end of the oil nozzle body is connected with the transformer cabinet body, an outer ring is rotationally connected to the outer surface of the oil nozzle body, an oil duct is arranged in the oil nozzle body, the oil duct penetrates through the peripheral surface of the oil nozzle body to form an oil outlet above the oiling bucket, the oil duct is further provided with an oil inlet penetrating through the oil nozzle body, the oil inlet is connected with the outlet end of the oil pump, an inlet of the oil pump is connected with the oil tank, the outer ring is connected with a plug for closing the oil outlet through an elastic support foot, the oil outlet is abutted against the oil outlet under the elastic action of the elastic support foot when the oil outlet is aligned with the plug, and the outer ring is provided with an external tooth piston rod which is engaged with the horizontal telescopic rack.
6. The transformer with shock absorbing feet according to claim 5, wherein a negative pressure cavity is arranged in the oil outlet plug, a plurality of communication holes which are communicated with the negative pressure cavity inside the oil outlet and are formed by a ferromagnetic iron covering the communication holes when the oil outlet plug is sealed in the oil outlet are arranged in the oil outlet plug, a sliding pin penetrating through the oil outlet plug is arranged on the communication hole sealing cover, a sealing cover closing spring which is connected with the sliding pin and drives the communication hole sealing cover to cover the communication holes is arranged in the negative pressure cavity, an electromagnet which adsorbs the communication hole sealing cover to enable the communication hole sealing cover to be opened is arranged in the oil duct, the upper end of the oil nozzle body is connected with a transformer cabinet body through a horizontal hinge shaft, two transverse racks are arranged on a piston rod of the telescopic cylinder, the telescopic cylinder drives the outer gear ring to rotate until the oil outlet plug is sealed in the oil outlet, the push block is abutted to the oil nozzle body, the cylinder further drives the oil nozzle body to rotate with the hinge shaft to the oil outlet sealing cover upwards, and the electromagnet is attracted by the magnetic force to enable the communication hole sealing cover to be opened after the oil outlet sealing cover is upwards.
7. The transformer with shock absorbing legs according to claim 5, wherein the automatic oiling mechanism further comprises a control module, the control module comprises a controller, a vertical rack connected to the transformer cabinet, a gear meshed with the vertical rack and a detection mechanism for detecting the number of turns of the gear, the gear is connected to the supporting legs through a one-way roller, and the controller enables the oil pump and the oil nozzle to be opened for a set period of time when the detection mechanism detects the number of turns of the gear, so that lubricating oil in the oil tank is output from the oil nozzle through the oil pump and is added into the oil filling bucket.
8. The transformer with shock absorbing legs according to claim 1, 2, 3 or 4, wherein the inlet of the oil return hole is located above the bottom wall of the annular oil receiving groove.
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| CN201811251833.XA CN109346286B (en) | 2018-10-25 | 2018-10-25 | Transformer with shock-absorbing feet |
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| CN201811251833.XA CN109346286B (en) | 2018-10-25 | 2018-10-25 | Transformer with shock-absorbing feet |
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| CN109346286B true CN109346286B (en) | 2024-03-05 |
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| CN206291502U (en) * | 2016-12-15 | 2017-06-30 | 捷旗马克能源科技(江苏)有限公司 | A kind of use nitrogen recovers the device of conduction oil flash temperature |
| CN209232554U (en) * | 2018-10-25 | 2019-08-09 | 浙江大有实业有限公司电力承装分公司 | Radiate vibration isolation shape transformer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2853540A (en) * | 1954-01-06 | 1958-09-23 | Gen Electric | Gas insulated electrical apparatus |
| JPH04166696A (en) * | 1990-10-31 | 1992-06-12 | Sanyo Electric Co Ltd | Cooling device for cryogenic refrigerating compressor |
| WO2010060524A1 (en) * | 2008-11-01 | 2010-06-03 | Ed. Züblin Ag | Device and installation for the intermediate storage of heat energy |
| CN201638640U (en) * | 2010-04-23 | 2010-11-17 | 上官远定 | Shell-type transformer dissipating heat by means of evaporative cooling |
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