CN117074453A - Test equipment for hot oil circulation of transformer substation - Google Patents
Test equipment for hot oil circulation of transformer substation Download PDFInfo
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- CN117074453A CN117074453A CN202311051749.4A CN202311051749A CN117074453A CN 117074453 A CN117074453 A CN 117074453A CN 202311051749 A CN202311051749 A CN 202311051749A CN 117074453 A CN117074453 A CN 117074453A
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- 238000012360 testing method Methods 0.000 title claims abstract description 46
- 210000001503 joint Anatomy 0.000 claims abstract description 25
- 238000007789 sealing Methods 0.000 claims description 96
- 239000007788 liquid Substances 0.000 claims description 59
- 238000007906 compression Methods 0.000 claims description 14
- 230000006835 compression Effects 0.000 claims description 13
- 238000003825 pressing Methods 0.000 claims description 9
- 238000013461 design Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000001802 infusion Methods 0.000 description 23
- 238000007599 discharging Methods 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 4
- 238000005485 electric heating Methods 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 238000000605 extraction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000010992 reflux Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/26—Oils; Viscous liquids; Paints; Inks
- G01N33/28—Oils, i.e. hydrocarbon liquids
- G01N33/2805—Oils, i.e. hydrocarbon liquids investigating the resistance to heat or oxidation
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Immunology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention discloses test equipment for hot oil circulation of a transformer substation, which comprises a tractor, a support frame, a pressure-resistant shell, an upper end cover, a return pipe, a feed pipe and a butt joint, wherein the support frame is arranged on the upper surface of the tractor, the pressure-resistant shell is of a spherical structure and is fixedly connected to the position above the support frame, the pressure-resistant shell is covered by the upper end cover, one end of the return pipe is connected with the upper end cover, one end of the feed pipe is connected to the lower end position of the outer side surface of the pressure-resistant shell, and the other ends of the return pipe and the feed pipe are connected with the butt joint.
Description
Technical Field
The invention relates to the technical field of operation and maintenance of a transformer substation, in particular to test equipment for hot oil circulation of a transformer of the transformer substation.
Background
The main transformer hot oil circulation is to circulate the oil inside the transformer through measures such as pumping, heating and cooling to reach stable temperature and flow, and the main transformer hot oil circulation has the main function of ensuring the uniform distribution of the temperature inside the transformer, preventing the aging and deterioration of the transformer oil and improving the operation efficiency and the safety of the transformer.
The main transformer of the transformer substation is required to be subjected to hot oil circulation test after vacuum oiling, the circulation time is generally not less than 48 hours, the concrete operation process is that oil filtering valves arranged at the upper part and the lower part of the transformer are connected with an oil filter through a pipeline to form a closed annular circulation passage, the oil temperature input into the transformer is controlled to be between 60 ℃ and 80 ℃, the pressurization circulation is continuously carried out until the oil quantity fed into the main transformer is more than twice of the oil quantity in the transformer, and then an oil sample can be extracted for inspection.
In a specific operation process, after the connection of the existing closed annular circulation passage is completed, the air contained in the pipeline can influence the performance of a test for circulating the hot oil, and when the oil is heated, the oil is in contact with the air and can be oxidized rapidly, so that the quality and the service life of the oil are influenced; meanwhile, when the pipeline of the connecting port is disassembled, oil between the pipe orifice and the valve can leak, so that pollution is caused.
Disclosure of Invention
In order to overcome the problems, the invention aims to provide the testing equipment for the hot oil circulation of the transformer substation, which can completely discharge the air in the pipeline before the hot oil circulation is carried out, so that the oxidation of oil caused by the air entering the main transformer is avoided, the product quality and the service life of the transformer are improved, the automatic cleaning of the oil at the interface flange can be completed after the hot oil circulation test, the generation of stains is avoided, and meanwhile, the cleaning mode is safe and reliable, the efficiency is high, and the problems in the background technology can be effectively solved.
The technical scheme adopted by the invention is as follows: including tractor, support frame, pressure housing, upper end cover, back flow, conveying pipe, butt joint, the support frame totally three sets up in the tractor upper surface, pressure housing is spherical structure, and the upper surface design has the opening, and fixed connection is in support frame top position, the upper end cover covers the open position of pressure housing upper surface, and the upper surface of upper end cover is provided with back flow infusion pump, evacuation pump, and the evacuation pump is located back flow infusion pump right side position, the upper end cover is connected to the one end of back flow, the one end of conveying pipe is connected in pressure housing's lateral surface lower extreme position, the butt joint is connected to the other end of back flow and conveying pipe.
The butt joint comprises a hard pipe, a sealing flange plate, a control valve, a top exhaust pipe, a bottom plate sealing column, a sealing ball, a compression bar and a liquid discharge valve, wherein one end of the hard pipe is connected with a return pipe and a feed pipe, the sealing flange plate is designed at the other end of the hard pipe, the control valve is located at one end of the outer side face of the hard pipe away from the sealing flange plate, the top exhaust pipe and the bottom plate sealing column are located at the middle position of the control valve and the sealing flange plate, the top exhaust pipe is located right above the bottom plate sealing column, a frustum type liquid outlet nozzle is arranged at the upper end of the inner side face of the top exhaust pipe, the sealing ball is located at the top of the frustum type liquid outlet nozzle, the upper section of the inner side face of the bottom plate sealing column is a sealing section, the bottom plate sealing column is connected with the compression bar through a thread section arranged at the lower section of the inner side face of the bottom plate sealing column, the upper end face of the compression bar is connected with the sealing ball, and the liquid discharge valve is arranged at the outer side face of the bottom plate sealing column.
Further, a traction rod is arranged at the end part of the outer side surface of the tractor.
Furthermore, transformer oil, an electric heating device and a temperature sensor are arranged in the spherical pressure-resistant shell.
Further, the end of the return pipe is inserted into the bottom of the inner side surface of the spherical pressure housing.
Further, the back flow includes returns oil pipe, first blast pipe is located the inside of returning oil pipe, and the inlet of back flow infusion pump passes through the pipe and links to each other with spherical pressure housing's medial surface bottom, and the liquid outlet of back flow infusion pump links to each other with the inlet of first blast pipe, and the liquid outlet end of first blast pipe is located butt joint department.
Further, the conveying pipe comprises an oil conveying pipe and a second exhaust pipe, the second exhaust pipe is arranged in the oil conveying pipe, an oil filter is connected to the oil conveying pipe, an oil conveying pipe infusion pump is connected to the liquid inlet of the second exhaust pipe, the liquid inlet of the oil conveying pipe infusion pump is connected with the bottom of the inner side face of the spherical pressure-resistant shell through a guide pipe, and the liquid outlet end of the second exhaust pipe is located at the butt joint position.
Further, a handle is arranged in the middle of the side face of the hard tube, and the handle is of a Chinese character 'ri' -shaped structure.
Further, a sealing valve is connected to the top exhaust pipe in a threaded mode.
Further, the diameter of the cross section of the pressure rod is larger than that of the sealing ball, the liquid discharge valve is arranged in the middle of the sealing section, a cylindrical sealing sleeve is arranged at the sealing section, and the cylindrical sealing sleeve is tightly attached to the outer side face of the pressure rod.
Further, the test equipment further comprises an exhaust pipe, a first one-way valve, an exhaust pipe and a second one-way valve, wherein the first one-way valve is positioned at the air inlet end of the exhaust pipe, the exhaust pipe is positioned at the lower end of the outer side surface of the exhaust pipe, the second one-way valve is arranged on the exhaust pipe, the air inlet end of the exhaust pipe is connected with a threaded joint, and the threaded joint is in threaded connection with the top exhaust pipe.
The invention has the beneficial effects that:
according to the testing equipment for the hot oil circulation of the transformer substation, the pressure-resistant shell is fixed on the tractor, and meanwhile, the tractor is provided with the traction rod, so that the testing equipment can be moved conveniently, and the working efficiency is greatly improved.
According to the testing equipment for the transformer thermal oil circulation of the transformer substation, the reflux pipe infusion pump and the vacuumizing pump are arranged on the upper surface of the upper end cover, the reflux pipe infusion pump is used for discharging gas in the reflux pipe, the vacuumizing pump is used for vacuumizing the inside of the spherical pressure-resistant shell, the butt joint is used for connecting the oil inlet pipe and the oil outlet pipe of the transformer, so that an annular loop is formed, air in the pipeline can be completely discharged before the thermal oil circulation is carried out, oil oxidation caused by the fact that the air enters the inside of the main transformer is avoided, and the product quality and the service life of the transformer are improved.
After the testing equipment for the transformer substation hot oil circulation is to be tested, the valves of all groups are closed, the rotary compression bar pulls down the sealing balls, after the sealing balls move to the lower part of the liquid discharge valve, the liquid discharge valve is opened to completely discharge residual liquid in the hard pipe, and then the sealing flange plate can be separated, so that oil at the flange joint can be automatically cleaned through the design of the liquid discharge valve, the generation of stains is avoided, and meanwhile, the cleaning mode is safe and reliable, and the efficiency is high.
When the testing equipment for the transformer thermal oil circulation of the transformer substation is used for testing, the sealing flange is firstly connected with the flange at the oil inlet valve and the oil outlet valve respectively, the sealing valve is opened, the top exhaust pipe is connected with the external air extractor, the compression bar is rotated, the compression bar pulls down the sealing ball, the inside of the hard pipe is vacuumized through the air extractor, after the vacuumization is finished, the sealing ball is tightly pressed on the inner side surface of the frustum-shaped liquid outlet nozzle by the reverse rotation compression bar, so that the sealing of the top exhaust pipe is realized, the sealing valve is screwed up finally, then the control valve can be opened for discharging oil.
Drawings
FIG. 1 is a schematic three-dimensional structure of a test device for hot oil circulation of a transformer of a substation;
FIG. 2 is a front view of a test apparatus for thermal oil circulation of a transformer of a substation according to the present invention;
FIG. 3 is a schematic cross-sectional view of a return tube of a test device for thermal oil circulation of a transformer of a substation according to the present invention;
FIG. 4 is a schematic cross-sectional view of a feeding tube of a test apparatus for thermal oil circulation of a transformer of a substation according to the present invention;
FIG. 5 is a schematic diagram of a three-dimensional structure of an abutting joint of a testing device for hot oil circulation of a transformer of a substation;
FIG. 6 is a front view of a test equipment interface for thermal oil circulation of a substation transformer according to the present invention;
fig. 7 is a schematic structural diagram of an exhaust tube of a test device for hot oil circulation of a transformer of a substation according to the present invention.
Description of the reference numerals
1-tractor, 11-traction rod, 2-support frame, 3-pressure-resistant shell, 4-upper end cover, 41-return pipe infusion pump, 42-vacuum pump, 5-return pipe, 51-return pipe, 52-first exhaust pipe, 6-feed pipe, 61-oil feeding pipe, 62-second exhaust pipe, 63-oil feeding pipe infusion pump, 7-butt joint, 71-hard pipe, 72-sealing flange, 73-control valve, 74-top exhaust pipe, 741-sealing valve, 75-bottom plate sealing column, 76-sealing ball, 77-compression bar, 78-liquid discharge valve, 79-handle, 8-exhaust pipe, 81-first check valve, 82-exhaust pipe, 83-screwed joint.
Detailed Description
The following describes specific embodiments of the invention with reference to the drawings and examples:
it should be noted that the structures, proportions, sizes, etc. shown in the drawings are merely used in conjunction with the disclosure of the present invention, and are not intended to limit the applicable limitations of the present invention, but any structural modifications, proportional changes, or adjustments of size, which do not affect the efficacy of the present invention and achieve the objective, should still fall within the scope of the disclosure of the present invention.
Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are for descriptive purposes only and not for purposes of limiting the scope of the invention, and are intended to cover various modifications or adaptations of the invention without materially altering the technical scope of the invention.
As shown in fig. 1-7, which illustrate embodiments of the present invention: the invention discloses test equipment for hot oil circulation of a transformer substation, which is characterized by comprising a tractor 1, a support frame 2, a pressure-resistant shell 3, an upper end cover 4, a return pipe 5, a feeding pipe 6 and a butt joint 7, wherein the total number of the support frames 2 is three, the pressure-resistant shell 3 is arranged on the upper surface of the tractor 1, the upper surface is provided with an opening and is fixedly connected to the upper position of the support frame 2, the upper end cover 4 covers the opening of the upper surface of the pressure-resistant shell 3, the upper surface of the upper end cover 4 is provided with a return pipe liquid conveying pump 41 and a vacuumizing pump 42, the vacuumizing pump 42 is positioned on the right side of the return pipe liquid conveying pump 41, one end of the return pipe 5 is connected with the upper end cover 4, one end of the feeding pipe 6 is connected to the lower end position of the outer side surface of the pressure-resistant shell 3, and the other ends of the return pipe 5 and the feeding pipe 6 are connected with the butt joint 7.
In the invention, as shown in fig. 1 and 2, the position of the testing equipment can be conveniently moved by the tractor 1, the working efficiency is improved, the upper surface of the upper end cover 4 is provided with a return pipe infusion pump 41 and a vacuumizing pump 42, the return pipe infusion pump 41 is used for discharging gas in the return pipe 5, the vacuumizing pump 42 is used for vacuumizing the interior of the spherical pressure-resistant shell 3, and the butt joint 7 is used for connecting an oil inlet pipe and an oil outlet pipe of the transformer, so that an annular loop is formed, and then air in the pipeline can be completely discharged before hot oil circulation is carried out, so that oil oxidation caused by the air entering the interior of the main transformer is avoided, and the product quality and the service life of the transformer are improved.
The butt joint 7 comprises a hard pipe 71, a sealing flange plate 72, a control valve 73, a top exhaust pipe 74, a bottom plate sealing column 75, a sealing ball 76, a pressing rod 77 and a liquid draining valve 78, wherein one end of the hard pipe 71 is connected with a return pipe 5 and a feeding pipe 6, the sealing flange plate 72 is designed at the other end of the hard pipe 71, the control valve 73 is located at one end of the outer side surface of the hard pipe 71, which is far away from the sealing flange plate 72, the top exhaust pipe 74 and the bottom plate sealing column 75 are located at the middle position of the control valve 73 and the sealing flange plate 72, the top exhaust pipe 74 is located right above the bottom plate sealing column 75, the upper end of the inner side surface of the top exhaust pipe 74 is provided with a frustum-shaped liquid outlet nozzle, the sealing ball 76 is located at the top of the frustum-shaped liquid outlet nozzle, the upper section of the inner side surface of the bottom plate sealing column 75 is provided with the sealing section, the bottom plate sealing column 75 is connected with the pressing rod 77 through a threaded section arranged at the lower section of the inner side surface, the upper end surface of the pressing rod 77 is connected with the sealing ball 76, and the liquid draining valve 78 is arranged at the outer side surface of the bottom plate sealing column 75.
Preferably, the diameter of the cross section of the compression bar 77 is larger than that of the sealing ball 76, the liquid discharge valve 78 is arranged in the middle of the sealing section, a cylindrical sealing sleeve is arranged at the sealing section, and the cylindrical sealing sleeve is tightly attached to the outer side face of the compression bar 77.
Preferably, a sealing valve 741 is screwed to the top exhaust pipe 74.
In the invention, as shown in fig. 5 and 6, the sealing flange 72 of the butt joint 7 connected with the return pipe 5 and the feeding pipe 6 is connected with the flange at the oil inlet valve and the oil outlet valve respectively, the sealing valve 741 is opened, the top exhaust pipe 74 is connected with an external air extractor, the rotary compression rod 77 and the compression rod 77 pull down the sealing ball 76, and the air in the pipeline is completely discharged before the hot oil circulation is carried out by the air extractor, so that the oil oxidation caused by the air entering the inside of the main transformer is avoided, and the product quality and the service life of the transformer are improved.
After the vacuumizing is finished, the sealing ball 76 is tightly pressed on the inner side surface of the frustum-shaped liquid outlet nozzle by the reverse rotation pressing rod 77, so that the sealing of the top exhaust pipe 74 is realized, the sealing valve 741 is screwed up finally, then the control valve 73 can be opened for discharging oil, the testing is carried out, after the testing is finished, the valves of all groups are closed, the pressing rod 77 is rotated, the sealing ball 76 is pulled down by the rotation pressing rod 77, after the sealing ball 76 moves below the liquid discharge valve 78, the liquid discharge valve 78 is opened to completely discharge residual liquid in the hard pipe 71, the sealing flange plate 72 can be separated, the oil at the flange joint can be automatically cleaned through the design of the liquid discharge valve 78, the generation of stains is avoided, and meanwhile, the cleaning mode is safe and reliable, and the efficiency is high.
Preferably, the end of the outer side surface of the tractor 1 is provided with a traction rod 11.
In the present invention, as shown in fig. 1 and 2, a traction rod 11 is provided on a tractor 1 to facilitate movement of the test equipment and improve working efficiency.
Preferably, transformer oil, an electric heating device and a temperature sensor are arranged in the spherical pressure-resistant shell 3.
According to the invention, the transformer oil, the electric heating device and the temperature sensor are arranged in the spherical pressure-resistant shell 3, so that the change of the test state can be intuitively and accurately known through specific data information during the test, and the implementation of various works in the test stage is facilitated.
Preferably, the end of the return pipe 5 is inserted into the bottom of the inner side of the spherical pressure housing 3.
Preferably, the return pipe 5 comprises an oil return pipe 51 and a first exhaust pipe 52, the first exhaust pipe 52 is located in the oil return pipe 51, a liquid inlet of the return pipe infusion pump 41 is connected with the bottom of the inner side surface of the spherical pressure-resistant housing 3 through a conduit, a liquid outlet of the return pipe infusion pump 41 is connected with a liquid inlet of the first exhaust pipe 52, and a liquid outlet end of the first exhaust pipe 52 is located at the butt joint 1.
In the invention, as shown in fig. 3, the liquid inlet of the first exhaust pipe 52 is connected with the liquid outlet of the return pipe infusion pump 41, and the liquid outlet end is connected with the butt joint 1, so that the design realizes the discharge of air in the return pipe infusion pump 41, ensures the vacuum state in the spherical pressure-resistant shell 3, and is beneficial to the completion of the test.
Preferably, the feeding pipe 6 includes an oil feeding pipe 61 and a second exhaust pipe 62, the second exhaust pipe 62 is disposed inside the oil feeding pipe 61, an oil filter is connected to the oil feeding pipe 61, an oil feeding pipe infusion pump 63 is connected to a liquid inlet of the second exhaust pipe 62, a liquid inlet of the oil feeding pipe infusion pump 63 is connected to the bottom of the inner side surface of the spherical pressure-resistant housing 3 through a conduit, and a liquid outlet end of the second exhaust pipe 62 is located at the butt joint 1.
In the invention, as shown in fig. 4, the liquid inlet of the second exhaust pipe 62 is connected with the oil-feeding pipe infusion pump 63, the liquid inlet of the oil-feeding pipe infusion pump 63 is connected with the bottom of the inner side surface of the spherical pressure-resistant shell 3 through a conduit, and the liquid outlet end of the second exhaust pipe 62 is positioned at the butt joint 1, so that the air in the oil-feeding pipe infusion pump 63 is discharged, the vacuum state in the spherical pressure-resistant shell 3 is ensured, and the completion of the test is facilitated.
Preferably, a handle 79 is provided at the middle of the side surface of the hard tube 71, and the handle 79 has a zigzag structure.
In the invention, as shown in fig. 4, the handle 79 is designed to facilitate the taking of the butt joint 7, the operation and the work efficiency.
Preferably, the test device further comprises an exhaust pipe 8, a first one-way valve 81, an exhaust pipe 82 and a second one-way valve, wherein the first one-way valve is positioned at the air inlet end of the exhaust pipe 8, the exhaust pipe 82 is positioned at the lower end of the outer side surface of the exhaust pipe 8, the second one-way valve is arranged on the exhaust pipe 82, the air inlet end of the exhaust pipe 8 is connected with a threaded joint 83, and the threaded joint 83 is in threaded connection with the top exhaust pipe 74.
In the invention, as shown in fig. 7, the air inlet end of the air extraction pipe 8 is connected with a threaded joint 83, the threaded joint 83 is in threaded connection with the top air outlet pipe 74, when in use, the first check valve 81 on the air extraction pipe 8 is opened, the second check valve is arranged on the air outlet pipe 82, the air extraction device is started to extract air, and the extracted air is discharged through the air outlet pipe 82, so that the design is favorable for air discharge.
In the invention, the input ends of the return pipe infusion pump 41, the vacuumizing pump 42 and the oil delivery pipe infusion pump 63 are electrically connected with the output end of an external power supply through an external control switch, so that the safety in the test process is ensured.
Specific use and action of the embodiment:
when the pressure-resistant ball sealing device is used, firstly, the sealing flange 72 of the butt joint 7 connected with the return pipe 5 and the delivery pipe 6 is respectively connected with flanges at an oil inlet valve and an oil outlet valve, the sealing valve 741 is opened, the top exhaust pipe 74 is connected with an external air suction device, the pressure rod 77 is rotated, the pressure rod 77 pulls down the sealing ball 76, the inside of the hard pipe 71 is vacuumized through the air suction device, after the vacuumization is finished, the pressure rod 77 is reversely rotated, the sealing ball 76 is tightly pressed on the inner side surface of the frustum-shaped liquid outlet nozzle, thereby sealing the top exhaust pipe 74, finally, the sealing valve 741 is screwed up, then, the control valve 73 can be opened for discharging oil for testing, the return pipe liquid pump 41 and the oil delivery pipe pump 63 respectively feed the oil inside the spherical pressure-resistant housing 3 into the return pipe 5 and the delivery pipe 6, the air inside the return pipe 5 and the delivery pipe 6 is discharged into the spherical pressure-resistant housing 3, the vacuum pump 42 is started for vacuumizing the spherical housing 3, after the vacuumization is finished, the electric heating device inside the spherical housing 3 heats the oil, finally, the control valve 73 can be opened for discharging the oil, the test valve 73 is closed, the sealing ball 78 is completely rotated, the sealing ball 76 can be completely discharged after the pressure-resistant ball is completely, the sealing ball 76 is completely sealed, the pressure-resistant ball is completely, after the pressure-resistant ball is completely sealed, the sealing valve 78 is completely sealed, and after the sealing valve is completely sealed, and after the sealing is completely sealed, and is completely.
While the preferred embodiments of the present invention have been described in detail with reference to the drawings, the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.
Many other changes and modifications may be made without departing from the spirit and scope of the invention. It is to be understood that the invention is not to be limited to the specific embodiments, but only by the scope of the appended claims.
Claims (10)
1. The utility model provides a test equipment for transformer substation's transformer hot oil circulation, its characterized in that includes tractor (1), support frame (2), pressure-resistant casing (3), upper end cover (4), back flow (5), conveying pipe (6), butt joint (7), support frame (2) total three, set up in tractor (1) upper surface, pressure-resistant casing (3) are spherical structure, and the upper surface designs has the opening, fixed connection in support frame (2) upper position, upper end cover (4) cover pressure-resistant casing (3) upper surface's open position, upper surface of upper end cover (4) is provided with back flow transfer pump (41), vacuum pump (42), and vacuum pump (42) are located back flow transfer pump (41) right side position, back flow (5) one end connect upper end cover (4), conveying pipe (6) one end is connected in pressure-resistant casing (3) lateral surface lower extreme position, back flow (5) and conveying pipe (6) other end connect butt joint (7);
the butt joint (7) comprises a hard pipe (71), a sealing flange plate (72), a control valve (73), a top exhaust pipe (74), a bottom plate sealing column (75), a sealing ball (76), a pressing rod (77) and a liquid discharge valve (78), wherein one end of the hard pipe (71) is connected with a return pipe (5) and a feed pipe (6), the sealing flange plate (72) is designed at the other end of the hard pipe (71), the control valve (73) is located at one end of the outer side surface of the hard pipe (71) far away from the sealing flange plate (72), the top exhaust pipe (74) and the bottom plate sealing column (75) are located at the middle positions of the control valve (73) and the sealing flange plate (72), the top exhaust pipe (74) is located right above the bottom plate sealing column (75), the upper end of the inner side surface of the top exhaust pipe (74) is provided with a frustum type liquid discharge nozzle, the sealing ball (76) is located at the top of the frustum type liquid discharge nozzle, the upper section of the inner side surface of the bottom plate sealing column (75) is a sealing section, the bottom plate sealing column (75) is located at the top of the frustum type liquid discharge nozzle, the inner side surface of the bottom plate sealing column (77) is connected with the pressing rod (77) through the screw thread (77), and the pressing rod (75) is arranged on the outer side surface of the bottom plate sealing column (75).
2. Test equipment for the thermal oil circulation of a substation transformer according to claim 1, characterized in that the outer lateral end of the tractor (1) is provided with a traction rod (11).
3. Test equipment for the thermal oil circulation of substation transformers according to claim 1, characterized in that the inside of the spherical pressure-resistant housing (3) is provided with transformer oil, electrical heating means and temperature sensors.
4. Test equipment for the thermal oil circulation of substation transformers according to claim 1, characterized in that the end of the return pipe (5) is inserted into the bottom of the inner side of the spherical pressure housing (3).
5. The test equipment for hot oil circulation of a transformer substation according to claim 1, characterized in that the return pipe (5) comprises an oil return pipe (51) and a first exhaust pipe (52), the first exhaust pipe (52) is located in the oil return pipe (51), a liquid inlet of the return pipe liquid conveying pump (41) is connected with the bottom of the inner side surface of the spherical pressure-resistant shell (3) through a guide pipe, a liquid outlet of the return pipe liquid conveying pump (41) is connected with a liquid inlet of the first exhaust pipe (52), and a liquid outlet end of the first exhaust pipe (52) is located at the butt joint (1).
6. The test equipment for hot oil circulation of a transformer substation according to claim 1, characterized in that the feeding pipe (6) comprises an oil feeding pipe (61) and a second exhaust pipe (62), the second exhaust pipe (62) is arranged in the oil feeding pipe (61), the oil feeding pipe (61) is connected with an oil filter, the liquid inlet of the second exhaust pipe (62) is connected with an oil feeding pipe liquid pump (63), the liquid inlet of the oil feeding pipe liquid pump (63) is connected with the bottom of the inner side surface of the spherical pressure-resistant shell (3) through a conduit, and the liquid outlet end of the second exhaust pipe (62) is positioned at the butt joint (1).
7. The testing device for hot oil circulation of a transformer of a substation according to claim 1, characterized in that a handle (79) is arranged in the middle of the side face of the hard tube (71), and the handle (79) is of a Chinese character 'ri' shaped structure.
8. A test apparatus for the thermal oil circulation of a substation transformer according to claim 1, characterized in that the top exhaust pipe (74) is screwed with a sealing valve (741).
9. The testing device for hot oil circulation of a transformer of a substation according to claim 1, characterized in that the cross-sectional diameter of the compression bar (77) is larger than the diameter of the sealing ball (76), the liquid discharge valve (78) is arranged in the middle of the sealing section, a cylindrical sealing sleeve is arranged at the sealing section, and the cylindrical sealing sleeve is tightly attached to the outer side surface of the compression bar (77).
10. The test device for hot oil circulation of a transformer substation according to claim 1, further comprising an exhaust pipe (8), a first one-way valve (81), an exhaust pipe (82) and a second one-way valve, wherein the first one-way valve is positioned at the air inlet end of the exhaust pipe (8), the exhaust pipe (82) is positioned at the lower end of the outer side surface of the exhaust pipe (8), the exhaust pipe (82) is provided with the second one-way valve, the air inlet end of the exhaust pipe (8) is connected with a threaded joint (83), and the threaded joint (83) is in threaded connection with the top exhaust pipe (74).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311051749.4A CN117074453A (en) | 2023-08-21 | 2023-08-21 | Test equipment for hot oil circulation of transformer substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311051749.4A CN117074453A (en) | 2023-08-21 | 2023-08-21 | Test equipment for hot oil circulation of transformer substation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117074453A true CN117074453A (en) | 2023-11-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311051749.4A Pending CN117074453A (en) | 2023-08-21 | 2023-08-21 | Test equipment for hot oil circulation of transformer substation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117074453A (en) |
-
2023
- 2023-08-21 CN CN202311051749.4A patent/CN117074453A/en active Pending
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