CN114354671A - Energy-saving sleeve pipe temperature rise test device - Google Patents
Energy-saving sleeve pipe temperature rise test device Download PDFInfo
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- CN114354671A CN114354671A CN202011092105.6A CN202011092105A CN114354671A CN 114354671 A CN114354671 A CN 114354671A CN 202011092105 A CN202011092105 A CN 202011092105A CN 114354671 A CN114354671 A CN 114354671A
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- oil tank
- metal oil
- winding
- insulating partition
- insulating
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- 239000002184 metal Substances 0.000 claims abstract description 58
- 238000004804 winding Methods 0.000 claims abstract description 43
- 238000005192 partition Methods 0.000 claims abstract description 42
- 238000012544 monitoring process Methods 0.000 abstract description 3
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 abstract description 2
- 238000000053 physical method Methods 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 9
- 238000005265 energy consumption Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 238000007654 immersion Methods 0.000 description 3
- 238000005485 electric heating Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Housings And Mounting Of Transformers (AREA)
Abstract
The invention discloses an energy-saving casing pipe temperature rise test device which comprises a metal oil tank, insulating partition plates, a tripping switch and windings, wherein a plurality of insulating partition plates are uniformly and vertically fixed on the metal oil tank, and the windings are wound on the insulating partition plates; the opening switch is connected with the winding; a plurality of insulating space bars structures are the same, are rectangular shape board, and the long limit in rectangular shape board one side is equipped with trapezoidal tooth, and the long limit of opposite side is vertical to be fixed on metal oil tank's outer wall, and the winding is at a plurality of insulating space bars to during the trapezoidal tooth of each insulating space bar of embedding, the winding height of winding covers metal oil tank's whole or partial height, and trapezoidal tooth mouth use diameter is less than
Various wires are wound. The invention heats the transformer oil by a physical method; the insulating partition plates are adopted to partition the heat of the outer wall of the metal oil tank in sections, so that the winding is not easily softened by the high temperature of the outer surface of the metal oil tank; the insulating partition plate is suitable for the part with the diameter smaller than that of the insulating partition plate
The lead wire enables the temperature monitoring work to be continuously and accurately carried out.
Description
Technical Field
The invention relates to a casing test tool, in particular to an energy-saving casing temperature rise test device.
Background
China is a large energy consumption country, and more than 74% of China is from thermal power generation, namely, power generation is performed by using combustibles such as coal. In the face of the contradiction between energy shortage and huge demand, in addition to saving power consumption in daily life, the electric quantity needs to be reduced in the process of improving the use of equipment, so that the utilization rate of the equipment is maximized, the efficiency is maximized, and the effect of reducing energy consumption is achieved through technical means.
According to the requirements regulated by the national standard GB/T4109: bushings immersed at one or both ends in oil or other liquid insulating medium should be immersed in oil at ambient temperature, but for transformer bushings the oil temperature should remain 60K + -2K above ambient temperature. According to the standard requirement, when the sleeve is used for carrying out a temperature rise test, the oil temperature needs to be heated to 60K +/-2K. The original useful temperature rise test equipment is mostly formed by welding metal oil tanks, after a proper amount of transformer oil is filled in the tanks, the transformer oil is deeply filled into the oil tanks through high-power heating rods (furnaces) to raise the temperature of the oil, the temperature is not accurately controlled and lacks flexibility, the control on the precision is slow, and the temperature in the oil tanks is difficult to control. The metal steel drum heat conductivity is big, and the heat dissipation is fast to the personnel that burn easily of metal drum, the transformer oil temperature can not accurately be controlled to this kind of device, and the wire winding can not be used to the metal oil tank surface, and lacks the flexibility, can not reach the requirement in the precision, and temperature control is inaccurate, lacks stability.
Disclosure of Invention
Aiming at the defects of inaccurate temperature control, lack of flexibility, quick temperature change, lack of stability and the like of the conventional casing temperature rise test device, the invention aims to provide an energy-saving casing temperature rise test device capable of reducing the electricity consumption cost.
In order to solve the technical problems, the invention adopts the technical scheme that:
the invention provides an energy-saving casing temperature rise test device which comprises a metal oil tank, insulating partition plates, a separating switch and windings, wherein a plurality of insulating partition plates are uniformly and vertically fixed on the metal oil tank, and the windings are wound on the insulating partition plates; the opening switch is electrically connected with the winding.
A plurality of insulating space bars structures are the same, are rectangular shape board, and the long limit in rectangular shape board one side is equipped with trapezoidal tooth, and the long limit of opposite side is vertical to be fixed on metal oil tank's outer wall, and the winding is at a plurality of insulating space bars to during the trapezoidal tooth of each insulating space bar of embedding, the winding height of winding covers metal oil tank's whole or partial height, and trapezoidal tooth mouth use diameter is less than
Various wires are wound.
The number of the insulating partition plates of one oil tank is 8-16.
The metal oil tank is cylindrical, the upper end face of the metal oil tank extends beyond the cylindrical wall along the horizontal direction to form an upper edge, the lower end face of the metal oil tank extends outwards to form a base, and the upper end and the lower end of each insulating partition plate are abutted against the upper edge and the base and are clamped and fixed by the upper edge and the base.
The metal oil tank is one section or two sections, and two sections structures are including upper oil tank and lower oil tank, and wherein upper oil tank bottom all is equipped with the seal groove with lower oil tank upper portion contact surface, and two seal grooves keep with the axle center, and sealed the pad is placed in the middle of two notches, and two sections oil tanks pass through bolt and nut fastening.
The invention has the following beneficial effects and advantages:
1. the invention utilizes the eddy magnetic field generated by the coil circulation to be converted into a thermal field, and heats the transformer oil by a physical method; insulating partition plates with low heat conductivity are adopted and are placed on the outer wall of the metal oil tank at intervals in sections, so that the winding is not easily softened by the high temperature on the outer surface of the metal oil tank; the trapezoidal teeth of the insulating partition plate are suitable for the part with the diameter smaller than that of the insulating partition plate
The wires with different specifications enable the temperature monitoring work to be continuously and accurately carried out;
2. the opening switch of the invention independently controls the current of each coil so as to adjust the temperature of the transformer oil, reduce the energy consumption and improve the utilization rate of the coils.
3. The energy-saving temperature rise test device can greatly improve the efficiency of the sleeve temperature rise test, save the fund, reduce the electricity cost and improve the productivity of enterprises. Small transformers are also suitable.
Drawings
FIG. 1 is a schematic structural diagram of an energy-saving casing temperature rise test device according to the present invention;
FIG. 2 is a schematic view of the structure of the insulating spacer of the present invention;
FIG. 3 is a schematic structural view of a connecting portion of a two-section metal fuel tank according to the present invention;
fig. 4 is a partially enlarged view of fig. 3.
The oil tank comprises a sleeve 1, a metal oil tank 2, an upper oil tank 201, a lower oil tank 202, a bolt 203, a nut 204, a sealing washer 205, an insulating partition plate 3, a separating switch 4 and a winding 5.
Detailed Description
The invention is further elucidated with reference to the accompanying drawings.
As shown in fig. 1, the invention provides an energy-saving casing temperature rise test device, which comprises a metal oil tank 2, insulating partition plates 3, a switch 4 and windings 5, wherein a plurality of insulating partition plates 3 are uniformly and vertically fixed on the metal oil tank 2, and the windings 5 are wound on the insulating partition plates 3; the opening switch is electrically connected with the winding 5.
As shown in fig. 2, a plurality of insulating space bars 3 are the same in structure and are strip-shaped plates, the long edge of one side of each strip-shaped plate is provided with trapezoidal teeth, the long edge of the other side of each strip-shaped plate is vertically fixed on the outer wall of the metal oil tank 2, the winding 5 is wound on the insulating space bars 3 and is embedded into the trapezoidal teeth of the insulating space bars 3, and the winding height of the winding 5 covers the whole height or partial height of the metal oil tank 2.
The metal oil tank 2 is cylindrical, the upper end surface of the metal oil tank extends beyond the cylindrical wall along the horizontal direction to form an upper edge, the lower end surface of the metal oil tank extends outwards to form a base, and the upper end and the lower end of each insulating partition plate 3 are abutted against the upper edge and the base and are clamped and fixed by the upper edge and the base.
The insulating partition plate 3 of a section of oil tank is 8-16, and the installation mode is time-saving and labor-saving, does not need bolt fastening, and does not need to be bonded on the outer wall of the metal oil tank 2. In the embodiment, 12 insulating partition plates 3 are adopted, and the upper end and the lower end of each insulating partition plate are abutted against the upper edge and the base and are clamped and fixed by the upper edge and the base. The 12 trapezoidal tooth openings on the insulating partition plate 3 are integrally wound with the winding 5 formed by the conducting wires, so that the fixing of the insulating partition plate 3 is further strengthened while the conducting wires are prevented from sliding and falling off.
According to the different length of the end of the sleeve immersed in oil, the metal oil tank 2 is one section or two sections, the two sections of structures comprise an upper oil tank 201 and a lower oil tank 202, wherein the contact surfaces of the bottom of the upper oil tank 201 and the upper part of the lower oil tank 202 are respectively provided with a sealing groove, the two sealing grooves keep the same axis, and a sealing gasket is arranged between the two notches. The two oil tanks are fastened together by bolts and nuts, as shown in fig. 3-4.
The two-section structure metal oil tank 1 is designed by considering the difference of the lengths of the oil immersion parts of the sleeves to adjust, and meanwhile, the number of the windings is controlled according to the difference of the lengths of the oil immersion parts of the sleeves, so that the two-section structure metal oil tank is flexible to use, reduces energy consumption and saves cost.
In the embodiment, the insulating partition plate is made of insulating materials, so that the heat conductivity is small, the heat dissipation is not easy, and the wires are not easy to melt after being contacted. The winding 5 has a diameter of
The two ends of the wire are connected with the opening switch 4, the opening switch 4 is connected with a power supply, the number of the switches can be freely adjusted, the eddy current strength of the winding 5 is controlled in a grouping mode, and the oil temperature is accurately controlled. The opening and closing of the switch can be manually controlled.
The circumference of the metal oil tank 2 is uniformly fixed by an insulating partition plate 3, so that windings on the insulating partition plate 3 are separated from the outer wall of the metal oil tank. The metal oil tank 2 can be heated by an electric heating rod (or an electric heating furnace), and the temperature in the metal oil tank 2 can accurately reach a standard specified value by a method of heating the metal oil tank 2 through a winding 5 by using eddy current.
The working process and principle of the invention are as follows:
according to the difference of the lengths of the oil immersion ends of the sleeves, an oil tank with a proper height is selected, and the sleeves are placed in the metal oil tank 1.
A plurality of insulating partition plates are uniformly distributed and fixed on the outer wall of the metal oil tank, the outer side edge of each partition plate adopts a trapezoidal tooth structure, a winding 5 formed by a lead is wound on the partition plates, the winding 5 is wound at the trapezoidal groove to prevent the lead from sliding, falling off or moving, and meanwhile, the transformer oil is uniformly heated;
during the temperature rise test, the opening switch 4 is closed, and the winding 5 is electrified. The alternating current generates an eddy magnetic field through the winding 5, so that the temperature of the metal oil tank 2 is raised, and heat is transferred to oil through the outer wall of the metal oil tank 2.
If the lower oil end of the sleeve 1 immersed in the metal oil tank 2 is longer, the metal oil tank 2 with two sections of structures needs to be assembled into a whole for use, the two sections of metal oil tanks 2 are fastened by bolts and nuts, and the middle part is refueled with a sealing ring to prevent oil leakage. When the temperature in the metal oil tank 2 is about to reach the specified value of 60K, the valves are separated one by one, and the temperature rise speed of the transformer oil is accurately controlled.
The invention uses the thermal field converted from the eddy magnetic field generated by the coil circulation to heat the transformer oil. Meanwhile, the insulating partition plates 3 with low heat conductivity are adopted to partition the outer wall of the metal oil tank in sections, so that the winding 5 is not easily softened by the high temperature on the outer surface of the metal oil tank; the insulating partition plate 3 is suitable for wires of various specifications, so that the temperature monitoring work can be continuously and accurately carried out; the opening switch 4 controls the current of each coil independently to adjust the temperature of the transformer oil, reduce energy consumption, improve the utilization rate of the coils and improve the controllability and reliability of the state of equipment.
The invention greatly shortens the heating time of the transformer oil. The outer winding 5 on the insulating partition board 2 can be formed by one coil or multiple coils. The coils of the multiple groups are connected with the switches to control the on-off of the current. The trapezoidal teeth of the insulating partition plate 3 can accommodate and replace wires with different specifications and diameters, for example, in the embodiment, the trapezoidal teeth of the insulating partition plate 3 are designed to be 117, and a circle of wires can be wound by every three teeth, or the wires can be wound by four to five teeth. The winding can be wound in sections according to the height, each section is connected with one opening switch, and the winding is controlled according to the section (as shown in figure 3, four opening switches are adopted); each section of lead wire is immersed into the metal oil tank 2 according to different lengths of the sleeve, the height of the metal oil tank 2 is adjusted, the number of turns of the winding 5 is correspondingly adjusted, the use method is flexible, the energy consumption is reduced, and the cost is saved.
The invention can also adopt two heating modes of internal heating and external heating to raise the temperature of the oil, namely a heating rod is used in the oil tank, and the external heating mode utilizes an electrified coil for eddy current heating. The two methods can be used together or separately.
Claims (5)
1. The utility model provides an energy-saving bushing temperature rise test device which characterized in that: the device comprises a metal oil tank, insulating partition plates, a separating switch and windings, wherein the insulating partition plates are uniformly and vertically fixed on the metal oil tank, and the windings are wound on the insulating partition plates; the opening switch is electrically connected with the winding.
2. The energy-saving casing temperature rise test device of claim 1, wherein: a plurality of insulating space bars structures are the same, are rectangular shape board, and the long limit in rectangular shape board one side is equipped with trapezoidal tooth, and the long limit of opposite side is vertical to be fixed on metal oil tank's outer wall, and the winding is at a plurality of insulating space bars to during the trapezoidal tooth of each insulating space bar of embedding, the winding height of winding covers metal oil tank's whole or partial height, and trapezoidal tooth mouth use diameter is less than
Various wires are wound.
3. The energy-saving type casing temperature rise test device according to claim 1 or 2, characterized in that: the number of the insulating partition plates is 8-16.
4. The energy-saving casing temperature rise test device of claim 1, wherein: the metal oil tank is cylindrical, the upper end face of the metal oil tank extends beyond the cylindrical wall along the horizontal direction to form an upper edge, the lower end face of the metal oil tank extends outwards to form a base, and the upper end and the lower end of each insulating partition plate are abutted against the upper edge and the base and are clamped and fixed by the upper edge and the base.
5. The energy-saving casing temperature rise test device of claim 1, wherein: the metal oil tank is one section or two sections, and two sections structures are including upper oil tank and lower oil tank, and wherein upper oil tank bottom all is equipped with the seal groove with lower oil tank upper portion contact surface, and two seal grooves keep with the axle center, and sealed the pad is placed in the middle of two notches, and two sections oil tanks pass through bolt and nut fastening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011092105.6A CN114354671A (en) | 2020-10-13 | 2020-10-13 | Energy-saving sleeve pipe temperature rise test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011092105.6A CN114354671A (en) | 2020-10-13 | 2020-10-13 | Energy-saving sleeve pipe temperature rise test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114354671A true CN114354671A (en) | 2022-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011092105.6A Pending CN114354671A (en) | 2020-10-13 | 2020-10-13 | Energy-saving sleeve pipe temperature rise test device |
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| Country | Link |
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| CN (1) | CN114354671A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118655401A (en) * | 2024-08-16 | 2024-09-17 | 搏世因（北京）高压电气有限公司 | A temperature rise test tool and test method for casing |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203414429U (en) * | 2013-08-29 | 2014-01-29 | 中国西电电气股份有限公司 | Oil tank for thermal stability test of ultrahigh-voltage sleeve |
| CN108870966A (en) * | 2018-07-12 | 2018-11-23 | 佛山市高捷工业炉有限公司 | A kind of production sensor wire circle jig |
| CN213544446U (en) * | 2020-10-13 | 2021-06-25 | 沈阳和新套管有限公司 | Energy-saving casing temperature rise test device |
-
2020
- 2020-10-13 CN CN202011092105.6A patent/CN114354671A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203414429U (en) * | 2013-08-29 | 2014-01-29 | 中国西电电气股份有限公司 | Oil tank for thermal stability test of ultrahigh-voltage sleeve |
| CN108870966A (en) * | 2018-07-12 | 2018-11-23 | 佛山市高捷工业炉有限公司 | A kind of production sensor wire circle jig |
| CN213544446U (en) * | 2020-10-13 | 2021-06-25 | 沈阳和新套管有限公司 | Energy-saving casing temperature rise test device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118655401A (en) * | 2024-08-16 | 2024-09-17 | 搏世因（北京）高压电气有限公司 | A temperature rise test tool and test method for casing |
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