CN114582607A - Integral disassembling, assembling and transporting method for lead of disassembled transformer - Google Patents
Integral disassembling, assembling and transporting method for lead of disassembled transformer Download PDFInfo
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- CN114582607A CN114582607A CN202011373967.6A CN202011373967A CN114582607A CN 114582607 A CN114582607 A CN 114582607A CN 202011373967 A CN202011373967 A CN 202011373967A CN 114582607 A CN114582607 A CN 114582607A
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- lead
- voltage
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- regulating
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- 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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/82—Recycling of waste of electrical or electronic equipment [WEEE]
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention belongs to the technical field of disassembly, assembly and transportation of leads of disassembled transformers, and particularly relates to a method for integrally disassembling, assembling and transporting leads of disassembled transformers. The method comprises the steps of lead disassembly and transportation and lead field installation; the high-voltage lead, the voltage-regulating lead and the insulating wood piece are integrally fixed on a lead dismounting and transporting bracket after being dismounted, then are fixed on a transporting cover plate together with a supporting stool through a locker and then are transported to an installation site together with the transformer body. The invention greatly improves the working efficiency of disassembling and re-assembling the high-voltage lead, and the modular disassembling and assembling method is not easy to cause the loss and the damage of the insulating part.
Description
Technical Field
The invention belongs to the technical field of disassembly, assembly and transportation of leads of disassembled transformers, and particularly relates to a method for integrally disassembling, assembling and transporting leads of disassembled transformers.
Background
In mountainous areas and plateau areas, transportation of large-scale equipment is limited by transportation conditions such as road and bridge bearing, tunnel outer limit and the like, so that the areas are mostly provided with the disassembly transformer, and a plurality of problems of parts such as oil tanks, iron cores, coils, lead wires and the like of the disassembly transformer in transportation are caused. With the continuous development of power systems, the capacity of 500kV transformers is as high as 750MVA, and when such large-capacity transformers are disassembled for transportation, the traditional disassembling scheme cannot meet the transportation requirements. At present, the disassembling and transporting scheme of the lead wires of the large-capacity disassembling transformer still stays in a method for completely disassembling all the lead wires and insulating parts and reinstalling the lead wires and the insulating parts on site, and the method is complicated in operation and low in working efficiency.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a method for transporting a disassembled transformer lead by disassembling all insulated clamps such as leads, wooden parts, and wire clamps after in-plant experiments, placing the insulated clamps according to categories, transporting the insulated clamps together with an oil tank of the disassembled transformer, reassembling the insulated clamps on site, and having tedious operation and low work efficiency.
In order to achieve the purpose, the invention adopts the following technical scheme:
a disassembly and assembly transportation method for the whole lead of a disassembled transformer comprises the steps of disassembling and transporting the lead and installing the lead on site; the high-voltage lead, the voltage-regulating lead and the insulating wood piece are integrally fixed on a lead dismounting and transporting bracket after being dismounted, then are fixed on a transporting cover plate together with a supporting stool through a locker and then are transported to an installation site together with the transformer body.
The lead removal process includes the following steps:
step 1): disassembling an external accessory of the transformer body, discharging oil from the oil tank, lifting the transformer body out, and disassembling the no-load switch;
step 2): the insulation and shielding at the joint of the upper lead STT terminal and the lower lead STT terminal are pulled open, and the connecting bolt is loosened;
step 3): hoisting the lead dismounting and transporting bracket to the position of the insulation wooden piece of the high-voltage lead and the voltage-regulating lead and tightly leaning against the wooden piece, and fixing the lead dismounting and transporting bracket with the high-voltage lead, the voltage-regulating lead and the insulation wooden piece by using a locker after the position is determined;
step 4): respectively disassembling the high-voltage lead, the voltage-regulating lead and the joint of the insulating wooden piece and the transformer body;
step 5): the disassembled high-voltage lead, the pressure regulating lead, the insulation wood piece and the lead disassembling and transporting bracket are integrally hung above the transporting cover plate, and the lead disassembling and transporting bracket is integrally placed on the cushion stool and fixed by a locker;
step 6): and the high-voltage lead, the voltage regulating lead and the insulating wooden piece are transported to the site for installing the disassembled transformer together with the transformer body.
The size of the lead dismounting and transporting bracket is determined according to the wiring size of the high-voltage lead, so that the insulation distance from the high-voltage lead to the metal piece is kept consistent with that of the lead when the lead is delivered from a factory.
The lead dismounting and transporting bracket comprises a bracket main body and an auxiliary supporting frame arranged on the bracket main body, wherein the bracket main body is used for fixing a high-voltage lead and an insulating wooden piece; the auxiliary support frame is used for fixing the voltage regulating lead and enabling the flat cable position of the voltage regulating lead to be unchanged.
In the step 4) of disassembling and assembling the lead, the auxiliary support frame is firstly installed on the bracket main body; then sequentially disassembling the high-voltage lead wires at the upper parts of the three core column high-voltage coils, the joint of the voltage regulating lead wires and the transformer body, the high-voltage lead wires at the lower parts of the three core column high-voltage coils, the joint of the voltage regulating lead wires and the transformer body, and the joints of the insulating wooden parts at the upper parts and the lower parts of the high-voltage coils and the transformer body.
The upper and lower lead STT terminals each include a high voltage lead STT terminal and a voltage regulation lead STT terminal.
The lead field installation comprises the following steps:
step 1): after the field transformer body is in place, integrally hoisting the lead dismounting and transporting bracket, and the high-voltage lead and the voltage regulating lead on the lead dismounting and transporting bracket, keeping the high-voltage lead facing the transformer body, and connecting the high-voltage lead, the voltage regulating lead and the insulating wooden piece with the transformer body;
step 2): after the lead is installed, the locking belt between the high-voltage lead and the lead dismounting and transporting bracket is dismounted, the auxiliary supporting frame is dismounted, the lead dismounting and transporting bracket is lifted away from the transformer body, and the whole installation process of the high-voltage lead and the voltage-regulating lead is finished.
The connection process of the high-voltage lead, the voltage-regulating lead and the insulating wooden piece is as follows: firstly, connecting and wrapping and insulating the high-voltage lead wire and the STT terminal of the voltage regulating lead wire, and then sequentially completing the connection of the high-voltage lead wire and the voltage regulating lead wire at the upper parts of the three core column high-voltage coils and the transformer body, the connection of the high-voltage lead wire and the voltage regulating lead wire at the lower parts of the three core column high-voltage coils and the transformer body, and the connection of the insulating wooden parts at the upper parts and the lower parts of the high-voltage coils and the transformer body.
The invention has the advantages and beneficial effects that:
the invention greatly improves the working efficiency of disassembling and re-assembling the high-voltage lead, and the modular disassembling and assembling method is not easy to cause the loss and the damage of the insulating part.
The invention not only can reduce the wiring work of lead wire field installation, but also can ensure that the insulation distance from the lead wire to the metal piece is consistent with that of the metal piece when the transformer is delivered from a factory, and ensure the performance of the disassembled transformer product.
Drawings
FIG. 1 is a view showing the use of a wire handling carriage according to the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a schematic view of a lead wire mounting and dismounting transport bracket according to the present invention;
FIG. 4 is a left side view of FIG. 3;
fig. 5 is a schematic structural view of the ottoman of the present invention.
In the figure: 1 is the bracket main part, 2 is the auxiliary stay frame, 3 is insulating wooden piece, 4 is the stool that fills up, 5 is the transformer ware body, 6 is upper portion lead wire STT terminal, 7 are lower part lead wire STT terminal.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The invention provides a disassembly and assembly transportation method for the whole lead of a disassembled transformer, which comprises the steps of lead disassembly and transportation and lead field installation; the high-voltage lead, the voltage-regulating lead and the insulating wood piece are integrally fixed on a lead dismounting and transporting bracket after being dismounted, then are fixed on a transporting cover plate together with a supporting stool through a locker and then are transported to an installation site together with the transformer body.
As shown in fig. 1-2, in an embodiment of the present invention, the lead detachment transport process includes the following steps:
step 1): after the disassembled transformer is qualified in the test, transporting the product out of a test hall, disassembling external accessories of the transformer body 5, discharging oil from an oil tank, lifting the transformer body 5 out of the disassembled no-load switch, and preparing to disassemble a lead and an insulating wooden piece after the disassembly is finished;
step 2): before the whole lead is disassembled, the joint of an upper lead STT terminal 6 and a lower lead STT terminal 7 is firstly insulated and shielded, and a connecting bolt is loosened; specifically, the upper and lower lead STT terminals 6 and 7 each include a high voltage lead STT terminal and a voltage regulation lead STT terminal; specifically, six STT terminal connections need to be disassembled;
step 3): hoisting the lead dismounting and transporting bracket to the position of the insulation wooden piece 3 of the high-voltage lead and the voltage regulating lead and closing to the insulation wooden piece 3, and fixing the lead dismounting and transporting bracket with the high-voltage lead, the voltage regulating lead and the insulation wooden piece 3 by using a locker after the position is determined;
specifically, after the lead dismounting and transporting bracket is lifted to the position of the wood piece of the high-voltage lead and the pressure regulating lead and is close to the wood piece, the bolt hole for fixing the auxiliary supporting frame 2 on the lead dismounting and transporting bracket is arranged on the outer side of the pressure regulating lead between the B column and the C column, so that the auxiliary supporting frame 2 can be conveniently fixed; the height direction is consistent with the pressure regulating insulation wooden piece, and after the position is determined, the lead dismounting and transporting bracket is fixed with the lead and the insulation wooden piece by the locker; in the fixing process, the crane needs to keep a hoisting state, so that the self weight of the lead dismounting and transporting bracket is borne by the crane to avoid the damage to the lead and the insulation wooden piece caused by the overweight of the lead dismounting and transporting bracket;
step 4): respectively disassembling the high-voltage lead, the voltage-regulating lead and the joint of the insulating wooden piece 3 and the transformer body 5;
step 5): the disassembled high-voltage lead, the pressure regulating lead, the insulation wood piece 3 and the lead disassembling and transporting bracket are integrally hung above the transporting cover plate, the lead part is kept upward, and the lead disassembling and transporting bracket is integrally placed on the cushion stool 4 and fixed by a locker;
step 6): the high-voltage lead, the voltage-regulating lead and the insulating wooden piece 3 are transported to a site for installing the disassembled transformer together with the transformer body 5.
In this embodiment, the size of the lead wire dismounting and transporting bracket is determined according to the wiring size of the high-voltage lead wire, so that the insulation distance from the high-voltage lead wire to the metal piece is ensured to be consistent with that of the high-voltage lead wire when the high-voltage lead wire is shipped from a factory. As shown in fig. 3-4, the lead wire dismounting and transporting bracket comprises a bracket body 1 and an auxiliary supporting frame 2 mounted on the bracket body 1, wherein the bracket body 1 is used for fixing a high-voltage lead wire and an insulating wooden piece; the auxiliary support frame 2 is used for fixing the voltage regulating lead and enabling the flat cable position of the voltage regulating lead to be unchanged.
Specifically, in step 4), before formally disassembling the lead and the insulating wooden piece, the auxiliary support frame 2 is firstly installed on the bracket main body 1; then sequentially disassembling high-voltage leads at the upper parts of the three core column high-voltage coils, the connection parts of the voltage regulating leads and the transformer body 5, the high-voltage leads at the lower parts of the three core column high-voltage coils, the connection parts of the voltage regulating leads and the transformer body 5, and the connection parts of the insulating wooden pieces 3 at the upper parts and the lower parts of the high-voltage coils and the transformer body 5; detaching the joints of all the leads and the insulating wooden pieces, separating the leads from the transformer body 5, and fixing the detached leads and the insulating wooden pieces and the lead dismounting and transporting bracket by using the contraction band again; the winding displacement position of the voltage regulating lead wire is fixed with the auxiliary supporting frame 2 at least at four positions, so that the relative position of the voltage regulating lead wire is ensured to be unchanged. The crane keeps the lifting state of the lead dismounting and transporting bracket all the time in the whole dismounting operation process, and the weight of the lead, the insulating wooden piece and the lead dismounting and transporting bracket is borne by the lifting rope after the dismounting operation is finished, so that the lead after the wiring is finished is prevented from being deformed due to the action of external force.
The steps are the disassembly process in a lead factory, and the whole process ensures that the wiring shape and the relative position of the tested lead are not changed.
The lead field installation comprises the following steps:
step 1): after the field transformer body is in place, integrally hoisting the lead dismounting and transporting bracket, the high-voltage lead and the voltage regulating lead on the lead dismounting and transporting bracket, keeping the high-voltage lead facing the transformer body side, and connecting the high-voltage lead, the voltage regulating lead and the insulating wooden piece 3 with the transformer body 5;
specifically, the high-voltage lead and the voltage-regulating lead STT terminal are connected and wrapped for insulation, then the connection of the upper ends of the three core column high-voltage coils and the voltage-regulating lead with the transformer body 5, the connection of the lower ends of the three core column high-voltage coils and the voltage-regulating lead with the transformer body 5, and the connection of the upper and lower insulation wooden pieces of the high-voltage coils and the transformer body 5 are completed in sequence, all the leads and the insulation wooden pieces are connected, and the lifting rope is used for lifting the whole lead dismounting and transporting bracket and the leads all the time in the process.
Step 2): after the lead is installed, the locking belt between the high-voltage lead and the lead dismounting and transporting bracket is dismounted, the auxiliary supporting frame 2 is dismounted, the lead dismounting and transporting bracket is lifted away from the transformer body 5, and the whole installation process of the high-voltage lead and the voltage-regulating lead is finished.
The connection process of the high-voltage lead, the voltage-regulating lead and the insulating wooden piece 3 is as follows: firstly, connecting and wrapping and insulating STT terminals of the high-voltage lead and the voltage-regulating lead, and then sequentially completing the connection of the high-voltage lead and the voltage-regulating lead on the upper parts of the three core column high-voltage coils and the transformer body 5, the connection of the high-voltage lead and the voltage-regulating lead on the lower parts of the three core column high-voltage coils and the transformer body 5, and the connection of the insulating wooden pieces 3 on the upper parts and the lower parts of the high-voltage coils and the transformer body 5.
In the embodiment, the lead dismounting and transporting bracket is made of a square steel tube of 50 multiplied by 4, the size of the lead dismounting and transporting bracket is determined according to the wiring size of a high-voltage lead, and the auxiliary support frame 2 is connected with the bracket main body 1 through a bolt; as shown in fig. 5, the ottoman 4 has a square structure and is made of 50 × 50 angle steel. The lead wire adopts whole transportation mode, and high voltage lead wire and pressure regulating lead wire and insulating wooden fitting are fixed on lead wire dismouting transportation bracket, and rethread locker is fixed on transformer ware body 5 temporary transportation with apron together with the support bench, and together transport to the installation scene.
The method greatly improves the working efficiency of disassembling and re-assembling the high-voltage lead, and the modular disassembling and assembling method is not easy to cause the loss and damage of the insulating part; the method can reduce wiring work of lead on-site installation, ensure that the insulation distance from the lead to the metal piece is consistent with that of the metal piece when the transformer leaves a factory, and ensure the performance of a disassembled transformer product.
The above description is only an embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, extension, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.
Claims (8)
1. The integral disassembling, assembling and transporting method for the leads of the disassembled transformer is characterized by comprising the steps of disassembling and transporting the leads and installing the leads on site; the high-voltage lead, the voltage-regulating lead and the insulating wood piece are integrally fixed on a lead dismounting and transporting bracket after being dismounted, then are fixed on a transporting cover plate together with a supporting stool through a locker and then are transported to an installation site together with the transformer body.
2. The method for disassembling, assembling and transporting the whole lead of the disassembled transformer as claimed in claim 1, wherein the lead disassembling process comprises the following steps:
step 1): disassembling an external accessory of the transformer body, discharging oil from the oil tank, lifting the transformer body out, and disassembling the no-load switch;
step 2): the insulation and shielding at the joint of the upper lead STT terminal and the lower lead STT terminal are pulled open, and the connecting bolt is loosened;
and step 3): hoisting the lead dismounting and transporting bracket to the position of the insulation wooden piece of the high-voltage lead and the voltage-regulating lead and tightly leaning against the wooden piece, and fixing the lead dismounting and transporting bracket with the high-voltage lead, the voltage-regulating lead and the insulation wooden piece by using a locker after the position is determined;
step 4): respectively disassembling the high-voltage lead, the voltage-regulating lead and the joint of the insulating wooden piece and the transformer body;
step 5): the disassembled high-voltage lead, the pressure regulating lead, the insulation wood piece and the lead disassembling and transporting bracket are integrally hung above the transporting cover plate, and the lead disassembling and transporting bracket is integrally placed on the cushion stool and fixed by a locker;
step 6): and the high-voltage lead, the voltage regulating lead and the insulating wooden piece are transported to the site for installing the disassembled transformer together with the transformer body.
3. The method for disassembling, assembling and transporting the whole lead of the disassembled transformer as claimed in claim 2, wherein the size of the lead disassembling, assembling and transporting bracket is determined according to the wiring size of the high voltage lead, so as to ensure that the insulation distance from the high voltage lead to the metal part is consistent with that of the high voltage lead when the transformer is shipped out.
4. The method for disassembling, assembling and transporting the whole lead of the transformer according to claim 3, wherein the lead disassembling, assembling and transporting bracket comprises a bracket main body and an auxiliary support frame arranged on the bracket main body, wherein the bracket main body is used for fixing the high-voltage lead and the insulating wooden piece; the auxiliary support frame is used for fixing the voltage regulating lead and enabling the flat cable position of the voltage regulating lead to be unchanged.
5. The method for disassembling, assembling and transporting the whole lead of the disassembled transformer as claimed in claim 4, wherein in the step 4) of disassembling and assembling the lead, the auxiliary supporting frame is firstly installed on the bracket main body; then sequentially disassembling the high-voltage lead wires at the upper parts of the three core column high-voltage coils, the joint of the voltage regulating lead wires and the transformer body, the high-voltage lead wires at the lower parts of the three core column high-voltage coils, the joint of the voltage regulating lead wires and the transformer body, and the joints of the insulating wooden parts at the upper parts and the lower parts of the high-voltage coils and the transformer body.
6. The method of claim 1, in which the upper lead STT terminal and the lower lead STT terminal each comprise a high voltage lead STT terminal and a voltage regulation lead STT terminal.
7. The method for disassembling, assembling and transporting the integral lead of the disassembled transformer according to claim 1, wherein the field installation of the lead comprises the following steps:
step 1): after the field transformer body is in place, integrally hoisting the lead dismounting and transporting bracket, and the high-voltage lead and the voltage regulating lead on the lead dismounting and transporting bracket, keeping the high-voltage lead facing the transformer body, and connecting the high-voltage lead, the voltage regulating lead and the insulating wooden piece with the transformer body;
step 2): after the lead is installed, the locking belt between the high-voltage lead and the lead dismounting and transporting bracket is dismounted, the auxiliary supporting frame is dismounted, the lead dismounting and transporting bracket is lifted away from the transformer body, and the whole installation process of the high-voltage lead and the voltage-regulating lead is finished.
8. The method for disassembling, assembling and transporting the whole lead of the disassembled transformer according to claim 7, wherein the connection process of the high-voltage lead, the voltage-regulating lead and the insulating wooden piece is as follows: firstly, connecting and wrapping and insulating STT terminals of a high-voltage lead and a voltage-regulating lead, and then sequentially completing the connection of the high-voltage lead and the voltage-regulating lead on the upper parts of three core column high-voltage coils and a transformer body, the connection of the high-voltage lead and the voltage-regulating lead on the lower parts of the three core column high-voltage coils and the transformer body, and the connection of insulating wooden pieces on the upper parts and the lower parts of the high-voltage coils and the transformer body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011373967.6A CN114582607A (en) | 2020-11-30 | 2020-11-30 | Integral disassembling, assembling and transporting method for lead of disassembled transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011373967.6A CN114582607A (en) | 2020-11-30 | 2020-11-30 | Integral disassembling, assembling and transporting method for lead of disassembled transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114582607A true CN114582607A (en) | 2022-06-03 |
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ID=81767336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011373967.6A Pending CN114582607A (en) | 2020-11-30 | 2020-11-30 | Integral disassembling, assembling and transporting method for lead of disassembled transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114582607A (en) |
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2020
- 2020-11-30 CN CN202011373967.6A patent/CN114582607A/en active Pending
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