CN112053835A

CN112053835A - Heat radiator matched with power transformer

Info

Publication number: CN112053835A
Application number: CN201910484771.5A
Authority: CN
Inventors: 王天林; 曲寿晴; 万成; 姜洪强
Original assignee: Shenyang Tiantong Electric Co ltd
Current assignee: Shenyang Tiantong Electric Co ltd
Priority date: 2019-06-05
Filing date: 2019-06-05
Publication date: 2020-12-08

Abstract

The utility model provides a supporting heat abstractor that uses of power transformer, the inner tube overlaps mutually with the outer tube in the radiator and constitutes the A type of a plurality of intermediate layer cavity structures, B type heat dissipation monomer, the hot medium in the circulation transformer oil case in the intermediate layer cavity, the free inner tube inner wall of heat dissipation all has the heat dissipation wing or the heliciform heat dissipation wing of axial or radial equipartition with the outer tube outer wall, and inner tube inner chamber can ventilate from top to bottom, the inside and outside together heat dissipation of cooling tube has been realized, B type heat dissipation monomer becomes the radiating unit with the box that converges, radiating unit and pressure manifold constitution heat dissipation assembly, can divide into according to the current collection: the heat dissipation device replaces or reduces the use of a fan, is an effective scheme for realizing energy saving, and simultaneously reduces the manufacturing cost of the current heat dissipation device.

Description

Heat radiator matched with power transformer

Technical Field

The invention belongs to the field of processing, and relates to a heat dissipation device matched with a power transformer.

Background

At present, the design and manufacture of power transformers have entered a high-end high-quality development stage, and the heat dissipation devices matched with the power transformers, such as finned radiators, forced-oil air coolers and other products, have not realized new technical breakthrough and innovation for decades in the industry, have high manufacturing cost and low heat dissipation performance, become one of the main bottlenecks in the transformer industry, and some new technical schemes have been made in the industry, for example, search 1 and CN201110410625.1 high-frequency water-cooled transformers based on aluminum profile radiators, and secondary windings and center tap leading-out terminals of the transformers are fixed on the aluminum profile radiators through copper sleeves and bus plates. But the defects of the scheme are that the strength is poor and unreliable, and the use requirement of the power transformer cannot be met; 2. CN200820013962.0 power transformer is with high-efficient aluminum alloy finned radiator, the aluminum alloy is stretched into whole finned radiator, has the continuous cooling tube of a plurality of in the finned radiator, and its surface has the fin, and the business turn over mouth department of every cooling tube all installs a valve for oil-immersed transformer oil cooling. 3. CN200420077394.2 steel-aluminum composite radiator, aluminum profile radiating fin suit are on the steel pipe of connecting the oil collecting pipe. The method is not strong in practicability and can not realize technical breakthrough innovation in the field by searching the file content.

Disclosure of Invention

The invention aims to provide a heat dissipation device matched with a power transformer, wherein hot air formed by heat dissipation of inner and outer cavities of a multi-form heat dissipation assembly pushes an unpowered air inducing device to rotate, ventilate and dissipate heat, and the effect of greatly improving the self-cooling and heat dissipation efficiency of the heat dissipation device is realized.

A heat dissipation device matched with a power transformer comprises a heat dissipation monomer, a heat dissipation unit, a heat dissipation assembly, a ventilation component and a PLC fan control unit, the heat dissipation assembly is made of aluminum alloy, copper and steel materials, the heat dissipation medium comprises transformer oil and sulfur hexafluoride gas, it is characterized in that the radiator is an interlayer cavity tube, a type A radiating monomer and a type B radiating monomer of a plurality of interlayer cavities are formed by sleeving an inner tube and an outer tube, radiating fins which are uniformly distributed axially or radially or spirally are arranged on the inner wall of the inner tube and the outer wall of the outer tube, the type B radiating monomer and a confluence box form a radiating unit, the radiating unit and a collecting pipe form a radiating assembly to form a central current-collecting type radiating assembly and a peripheral current-collecting type radiating assembly, the difference is that the A-shaped inner pipe forms an interlayer, rib plates are arranged in the interlayer and connected with each other, no wing is arranged in the center of the inner pipe, a volume compensation part is arranged in the center of the inner pipe, the adjustable heat dissipation central type heat dissipation assembly consists of an A-shaped heat dissipation monomer and an adjustable heat dissipation central type collecting pipe; the upper end of the central current-collecting type, peripheral current-collecting type and adjustable heat dissipation central type heat dissipation assembly is provided with an unpowered air draught fan and a communicated air draught tube, and the lower end of the central current-collecting type, peripheral current-collecting type and adjustable heat dissipation central type heat dissipation assembly is provided with an air collecting pipe and an air collecting cover communicated fan to form a heat dissipation device; each group of heat dissipation devices is provided with a sensor and a temperature controller, and a fan is controlled by using a PLC; and oil pumps with required models can be installed on the flange pipelines of the four collecting pipes according to the requirements of heat dissipation media and heat dissipation efficiency.

According to different requirements of design parameters of the transformer, the heat dissipation device for the transformer can be combined into three structures, and the heat dissipation device for the transformer can adjust the heat dissipation center to collect the heat; a central current-collecting type heat dissipation device for the transformer; a heat sink for a peripheral current collecting type transformer. The advantages are as follows:

1. the heat dissipation body has the advantages that heat is dissipated inside and outside the interlayer cavity tube of the heat dissipation body together, a heat medium communicated with the transformer flows in the cavity of the tube clamp layer, the inner wall of the inner tube and the outer wall of the outer tube of the heat dissipation body are provided with the heat dissipation fins, the ventilation of the inner cavity of the inner tube can be realized, the heat dissipation area can be obviously increased, the heat dissipation effect inside and outside the oil cavity is formed, the inner cavity of the inner tube is vertical to the horizontal direction, when the heat medium in the interlayer cavity conducts heat to the heat dissipation fins on the inner wall of the inner tube, the upper tube opening of the cavity of the inner wall of the inner tube can form concentrated upward hot air flow due to the fact that the through holes are formed in the upper portion and the lower portion of the inner tube, the air.

2. The heat radiator matched with the power transformer has three current collecting modes for the heat radiating medium of the transformer: 2.1) the heat dissipation device for the adjustable heat dissipation center current-collecting type transformer is formed by communicating a plurality of heat dissipation units with three-layer cavities with a current collecting pipe at the bottom end and the middle upper part, the plurality of heat dissipation units are communicated with an upper flange connecting pipe and a lower flange connecting pipe, the upper end of each heat dissipation unit is higher than the flanges, the specific height of the three-layer sandwich transformer is determined according to the design parameters of the transformer, the third sandwich cavity and the first sandwich cavity can be filled with nitrogen at the upper part and filled with transformer oil at the lower part or filled with the transformer completely, the center of the inner tube is provided with a corrugated tube made of a saccular high polymer material or provided with a metal corrugated tube to play a role in volume compensation, the upper bottom plate can be communicated with the small corrugated pipe to increase the ventilation of the inner cavity, the design can replace a transformer conservator and a corrugated sheet on a transformer oil tank under the condition of certain transformer technical parameters, the volume compensation effect on the temperature change of the transformer oil is achieved, and the heat dissipation effect of the heat dissipation body can be improved due to the rising of the heat dissipation center of the heat dissipation body. 2.2) the heat dissipation device for the central current-collecting type and peripheral current-collecting type transformers is composed of a plurality of heat dissipation units and collecting pipes, wherein the heat dissipation units and the collecting pipes are composed of a current-collecting box and a plurality of heat dissipation monomers. The design can select the length and the direction of the flow path of the heat dissipation medium more, and endows more and better design and selection schemes for the transformer heat dissipation device in the transformer design.

3. Designing a heat dissipation device consisting of the unpowered air inducer and the heat dissipation body: the working condition of the unpowered air guider is that the unpowered air guider can rotate to guide air and radiate heat of the inner cavity of the outer pipe and the inner pipe of the heat radiation body when the temperature difference between the inside and the outside is 3 ℃ or the wind speed is 0.2m/s (equivalent to the maximum wind speed of 0-level wind), thereby reducing the use of an electric energy power fan on the heat radiation body, realizing the purposes of improving the unpowered self-cooling heat radiation efficiency of the heat radiation device for the transformer and saving energy and electricity.

4. The lower part of the radiator can be provided with an electric control fan: each group of heat dissipation devices is provided with sensors, temperature controllers and other electrical elements, the fans are controlled by the PLC, the fans stop working under the condition that self-cooling can meet heat dissipation, if the temperature reaches a set value, the fans are started, and the fan control unit ensures that the automatic control of each group of heat dissipation devices is realized.

5. The interlayer cavity structure enables the design scheme to have the characteristic of easily realizing optimization of the shape and the size of the heat radiation body, and the volume of each cavity and the number of the wings are further determined through experiments, so that the heat radiation body with the optimal heat radiation effect can be selected; the unpowered draught fan increases the ventilation flow of the inner cavity of the radiator through the wind collecting pipe, and the technical characteristics in the description are compared with other technical schemes of the radiator for the transformer, so that the effective radiating area, the ventilation performance and the radiating efficiency are greatly increased.

6. The industrial production investment is relatively less, the production efficiency is relatively higher, the specification and model of the product can be further simplified, the energy-saving advantage is prominent, the production process is shorter, the influence on the environment in the production is smaller, and the bottleneck problem of the heat dissipation device for the existing transformer is well solved.

The invention relates to a heat dissipating device matched with a power transformer, which is suitable for transformer heat dissipating media such as transformer oil, sulfur hexafluoride and the like, wherein a heat dissipating single body with an interlayer cavity structure formed by an inner tube and an outer tube is designed in a heat dissipating body, a heat medium in a transformer oil tank flows through the interlayer cavity, the inner wall of the inner tube and the outer wall of the outer tube of the heat dissipating single body are respectively provided with heat dissipating fins or spiral heat dissipating fins which are uniformly distributed axially or radially, the inner cavity of the inner tube can ventilate up and down, the heat dissipation of the inner part and the outer part of the heat dissipating single body is realized together, a centralized upward hot air flow is formed at an upper tube opening of the inner cavity, the heat dissipating single body is more suitable for the upper part of a heat dissipating assembly to be provided with an unpowered air inducer to ventilate, and the heat dissipating device is obviously improved by pushing and, the insulation aging resistance of the transformer is protected, and the service life of the transformer is prolonged. The PLC controls the fan to work, the fan is replaced or reduced in use, an effective scheme for saving energy is achieved, and meanwhile a new way is provided for reducing the manufacturing cost of the power transformer heat dissipation device.

Drawings

FIG. 1 is an axial view of a flow concentrating heat sink with an adjustable heat dissipation center according to the present invention;

FIG. 2 is a perspective view of a flow-concentrating heat-dissipating assembly with an adjustable heat-dissipating center;

FIG. 3 is a perspective view of a central manifold heat sink assembly;

FIG. 4 is an isometric view of a first perimeter manifold heat sink assembly;

FIG. 5 is an axial view of a second peripheral manifold assembly;

FIG. 6 is an isometric view of a second peripheral manifold unpowered heat sink;

FIG. 7 is an isometric view of a central manifold heat sink;

FIG. 8 is a radial cross-sectional view of a first heat dissipating unit of type A;

FIG. 9 is a radial cross-sectional view of a second heat dissipating unit of type A;

fig. 10 is a radial sectional view of a first heat dissipating unit of type B;

fig. 11 is a radial sectional view of a B-type second heat dissipating unit;

fig. 12 is a radial sectional view of a type B third heat dissipating unit;

FIG. 13 is a radial cross-sectional view of a fourth heat dissipating monomer type B;

fig. 14 is a radial sectional view of a fifth heat dissipating unit of type B;

fig. 15 is a radial sectional view of a type B sixth heat dissipating unit;

fig. 16 is a radial sectional view of a seventh heat dissipating unit of type B;

fig. 17 is a radial sectional view of an eighth heat dissipating unit of type B;

fig. 18 is a radial sectional view of a type B ninth heat dissipating unit;

FIG. 19 is an isometric view of a central manifold heat sink;

FIG. 20 is an enlarged fragmentary isometric cross-sectional view F of FIG. 19;

FIG. 21 is an isometric view of a center manifold box;

FIG. 22 is a bottom view of the center manifold box;

FIG. 23 is a front view of a center manifold box;

FIG. 24 is a radial cross-sectional view of FIG. 23;

FIG. 25 is a top view of a center manifold box;

FIG. 26A is a schematic structural diagram of a multi-layered cavity heat sink;

FIG. 27A is a schematic view of a heat sink with a bellows in a third chamber;

FIG. 28 is a schematic view of a third chamber of type A having a metal bellows heat sink;

FIG. 29 is a schematic view of a type A third chamber with a heat dissipating unit having a metal bellows;

FIG. 30 is a partially enlarged isometric cross-sectional view of D of FIG. 29;

FIG. 31 is an enlarged fragmentary isometric cross-sectional view E of FIG. 29;

FIG. 32 is a side elevational view of a central collecting manifold;

FIG. 33 is a tubular isometric view of a peripherally-collecting unitary collector;

FIG. 34 is a peripheral collecting tube axial view;

FIG. 35 is an isometric view of a perimeter manifold.

Detailed Description

The heat dissipating device matched with the power transformer comprises a heat dissipating single body, a heat dissipating unit, a heat dissipating assembly, a ventilation part and a PLC fan control unit, wherein the heat dissipating assembly is made of aluminum alloy, copper and steel materials, a heat dissipating medium comprises transformer oil and sulfur hexafluoride gas, and an inlet flange and an outlet flange of the heat dissipating medium are connected with a pipeline of the heat dissipating medium of the transformer; the heat dissipation assembly is respectively assembled with an unpowered air inducer 7, a communicated air inducing barrel 6a and a bottom-mounted air collecting pipe 5 to form a self-cooling heat dissipation device for the transformer, which is shown in figure 6; the upper end of the heat dissipation assembly is provided with an unpowered air inducer 7 and an air inducing cylinder 6a which are communicated, the bottom of the heat dissipation assembly is provided with an air collecting pipe 5, and an air collecting cover 6b, a fan 8 and a PLC fan control unit can be communicated according to the heat dissipation power of the transformer and other parameter requirements, as shown in figure 1; the upper end of the heat dissipation assembly is provided with an unpowered air inducer 7, an air inducing cylinder 6a communicated with the unpowered air inducer 7, the bottom of the heat dissipation assembly is provided with an air collecting pipe 5, the bottom of the heat dissipation assembly is provided with a fan 8, an oil pump 9 can be additionally arranged on a pipeline of the heat dissipation assembly according to the parameter requirements of the transformer, see fig. 7, each group of heat dissipation devices is provided with a sensor and a temperature controller, and the fan is controlled by using a. The unpowered air guider 7 ventilates the heat dissipation assembly from bottom to top through the second layer cavity and the outside of the heat dissipation monomer, the fan 8 stops working under the condition that the rotation self-cooling energy of the unpowered air guider 7 meets the heat dissipation requirement, if the temperature reaches a set value, the fan 8 is started, and the circulation flow rate between the oil in the heat dissipation assembly and the oil in the transformer oil tank is increased when the oil pump is additionally arranged. When the requirement of transformer oil heat dissipation is met, the heat dissipation assembly can be used independently without ventilation equipment.

The manifold box 3 has two shapes: referring to fig. 21-25, the pipe body is rectangular, the wide part is provided with through holes 3B and 3a, the outer pipe welding hole 3B is adapted to the B-type outer pipe, and the inner pipe welding hole 3a is adapted to the B-type inner pipe; first, when the radiator is used for combining with a central current-collecting pipe 4B, the welding holes 3a and 3B of the inner pipe and the outer pipe of the convergence box 3 are adapted to the diameters of the inner pipe and the outer pipe of the B-type radiating single body, the welding hole 3c of the convergence box 3 is adapted to the central current-collecting pipe 4B in the middle of the length of the convergence box 3, and the two ends of the length of the convergence box are connected with sealing plates; the second difference is that when the collecting box 3 is communicated with the peripheral current collecting single collecting pipe 4c and the peripheral current collecting pipe 4d, the middle of the length of the collecting box is not provided with a collecting pipe welding hole 3c, and one end of the length of the collecting box is welded with the collecting pipe 4c or the collecting pipe 4d, and the other end of the length of the collecting box is welded with a sealing plate.

The manifold shape has four kinds, see fig. 2, 32 ~ 35: firstly, the adjustable heat dissipation central collecting pipe 4a and the connecting pipe 4a1 are square or rectangular pipes, and holes can be formed in the middle of the length of 4a when flange pipes need to be welded and are matched with the flange pipes; secondly, the central current collecting pipe 4B is a circular pipe, a convergence box welding hole matched with the convergence box 3 is formed in the circular pipe, an inner pipe welding hole is formed in the opposite side of the convergence box welding hole and matched with an A-type or B-type inner pipe, one end of the central current collecting pipe 4B is connected with a sealing plate, and the other end of the central current collecting pipe 4B is connected with a flange; thirdly, the peripheral current-collecting type monomer current-collecting pipe 4c is a square or rectangular pipe, the side wall of the pipe is provided with a current-collecting box welding hole and is matched with the section shape of the current-collecting box 3, the middle of the opposite outer side of the current-collecting box is communicated with a flange pipe, and the two ends of the current-collecting box are connected with a sealing plate; and the fourth peripheral current collecting pipe 4d is a square or rectangular pipe to form annular communication, the flange pipe and the square or rectangular pipe form annular pipe wall outer side middle communication, and the inner side wall of the current collecting pipe opposite to the flange pipe is provided with a current collecting box welding hole and is adaptive to the section shape of the current collecting box 3.

The heat dissipation device matched with the power transformer is in three forms:

the first adjustable heat-dissipation central collector type heat dissipation device provided with the unpowered air inducer 7 is shown in figures 1 and 2: a plurality of A-shaped heat dissipation units with three-layer cavities are shown in figures 8, 9 and 26-29, axial collecting pipe welding holes at the bottom end and the middle upper part are communicated with a collecting pipe 4a of an adjustable heat dissipation center to form a heat dissipation unit, a plurality of heat dissipation units are communicated with a connecting pipe 4a1 and then are communicated with connecting pipes of an upper flange and a lower flange to form an A-shaped heat dissipation assembly, the upper end of the heat dissipation assembly is higher than the connecting pipes of the flanges, and the specific height of the heat dissipation assembly is determined according to design parameters of a transformer. The A-type heat dissipation assembly is shown in figure 2, the unpowered air draught fan 7 and the communicated air draught tube 6a are installed at the upper end, the heat dissipation unit of the air collection pipe 5, the communicated air collection cover 6b and the fan 8 are installed at the lower end, and the heat dissipation device matched with the transformer is formed.

The second central flow-concentrating heat sink for mounting the unpowered air guider 7, the fan 8 and the oil pump 9 is shown in fig. 7: a central current collecting type heat dissipation assembly, as shown in fig. 3, wherein two ends of first to fourth inner tubes 2 e-2 h and 2m of a plurality of two-layer cavity B-type heat dissipation monomers respectively penetrate through a current collecting box 3, wherein one inner tube penetrating through a current collecting pipe welding hole 3c is longer than the other inner tubes, the outer side of the inner tube is welded with an inner tube welding hole 3a in a circumferential manner, two ends of first to sixth outer tubes 1 f-1 h, 1j, 1k and 1m of the plurality of B-type heat dissipation monomers are welded with an outer tube welding hole 3B of the current collecting box in a circumferential manner, two ends of the current collecting box 3 are welded by sealing plates to form a heat dissipation unit, as shown in fig. 19, the current collecting pipe welding holes 3c of the plurality of current collecting boxes 3 are welded with the current collecting box welding holes of a central current collecting pipe 4B in a circumferential manner, and the long inner tubes of the plurality of heat dissipation units and the inner tube; the upper end is provided with an unpowered air inducer 7 and an induced draft tube 6a which are communicated, the lower end is provided with a heat dissipation unit of an air collection tube 5, a communicated air collection cover 6b and a fan 8, and an oil pump 9 can be additionally arranged on a pipeline of a heat dissipation assembly according to the parameter requirements of the transformer to form a heat dissipation device matched with the transformer for use, as shown in figure 7.

A third peripheral manifold type heat sink device with the unpowered draught fan 7 is shown in fig. 6: the heat dissipation unit is composed of a confluence box 3 and a plurality of B-type heat dissipation monomers, two ends of a plurality of B-type heat dissipation monomers from a first outer pipe 1f to a sixth outer pipe 1h, 1j, 1k and 1m to a first inner pipe 2f to a fourth inner pipe 2h and 2m respectively penetrate through the confluence box 3, the outer sides of the B-type heat dissipation monomers are circumferentially welded with an inner pipe welding hole 3a and an outer pipe welding hole 3B to form the heat dissipation unit, the confluence box 3 and a peripheral current collection monomer current collection pipe 4c of the heat dissipation unit are shown in figure 33, and a peripheral current collection pipe 4d is shown in figure 35 to form a heat dissipation assembly, shown in figures 4 and 5, and the heat dissipation assembly can be independently matched with; the heat dissipation assembly is provided with an unpowered air guider 7 to form a heat dissipation device, see fig. 6, and the bottom of the heat dissipation assembly can be additionally provided with a fan 8 and an oil pump 9 to improve the air cooling heat dissipation efficiency and the oil pump circulation heat dissipation efficiency of the heat dissipation assembly, see fig. 35.

The A-type heat dissipation monomer is a multilayer cavity: the A-type heat dissipation monomer has three layers of cavities, as shown in figures 8 and 9, and the shape of the A-type heat dissipation monomer is as follows: the outer walls of the A-type first outer pipe 1e and the A-type second outer pipe 1L are provided with radiating fins 10 which are axially or radially uniformly distributed or spirally distributed, and the A-type first outer pipe 1e and the A-type first inner pipe 2e are sleeved or the A-type second outer pipe 1L and the A-type second inner pipe 2L form a first layer cavity; the A-shaped first inner pipe 2e and the A-shaped second inner pipe 2L are provided with a sandwich cavity pipe body which is axially communicated, and the inner wall and the outer wall of the sandwich cavity are connected by a plurality of rib plates to form a plurality of axially communicated ventilation cavities which are second layer cavities; the central cavities of the A-type first inner tube 2e and the second inner tube 2L are third-layer cavities; in fig. 8, the first outer tube 1e and the first inner tube 2e are circular, and fig. 9 is different from fig. 8 in that the second outer tube 1L and the second inner tube 2L are square, and the rest is the same. The A-type heat dissipation monomer is suitable for heat dissipation assemblies of adjustable heat dissipation central current-collecting type figures 1 and 2, central current-collecting type figures 3 and 7 and peripheral current-collecting type figures 4 to 6, and can be divided into four structures as shown in figures 26 to 29 when the A-type heat dissipation monomer is used in the adjustable heat dissipation central current-collecting type figures 1 and 2.

The shape of the B-type heat dissipation monomer is 9 cases: the B-type heat dissipation monomer is of a two-layer cavity structure, as shown in the figure 10-18, the B-type first to sixth outer tubes 1 f-1 h, 1j, 1k and 1m and the B-type first to fourth inner tubes 2 f-2 h and 2m are sleeved to form a first layer cavity, and the centers of the B-type first to fourth inner tubes 2 f-2 h and 2m are second layer cavities; the outer wall of the B-shaped outer pipe and the inner wall of the B-shaped inner pipe are provided with wings 10 which are axially or spirally distributed. Example 1 referring to fig. 10, a first outer tube 1f and a first inner tube 2f of a B-type heat dissipation unit are sleeved with an inner round tube and an outer round tube which are independent; in example 2, as shown in fig. 11, the inner pipe and the outer pipe are circular pipes, and are the same as the inner pipe and the outer pipe in example 1, except that rib plates are connected between the first-layer cavities; for example 3, as shown in fig. 12, a second outer pipe 1g and a second inner pipe 2g of the B-type heat dissipation unit are inner and outer waist-shaped pipes, and rib plates are arranged between the first layer cavities and connected with each other; in example 4, as shown in fig. 13, a third outer pipe 1h and a third inner pipe 2h of the B-type heat dissipation monomer are inner and outer oval pipes, and rib plates are connected between first layer cavities; for example 5, as shown in fig. 14, a first layer of cavity is connected by a rib plate between a B-shaped third outer pipe 1h and a third inner pipe 2h of the inner and outer oval pipes, and the difference is that the position of the inner pipe is arranged to be eccentric from the center of the outer pipe; in example 6, as shown in fig. 15, the structure different from that in example 5, fig. 14 is that the circular inner pipe is a B-shaped first inner pipe 2f, the elliptical pipe first outer pipe 1f and rib plates are connected between the first layer cavities; example 7 see fig. 16, which is a shape that the inner tube is circular and is a B-shaped first inner tube 2f, the B-shaped fourth outer tube 1j is circular and has a radially symmetrical rectangular extension, and both ends are rounded corners; example 8 referring to fig. 17, a large-diameter circular tube of a fifth B-shaped outer tube 1k has a circular extension radially symmetrical smaller than the large diameter, and a plurality of independent inner tubes therein are a first B-shaped inner tube 2f having a plurality of second-layer cavities; example 9 referring to fig. 18, an inner and outer rectangular tube, a sixth outer tube 1m of a rectangular B-shape, is nested with a fourth inner tube 2m of a B-shape. The above 9 cases of B-type heat dissipating units are suitable for use in the central current collecting type heat dissipating assembly of fig. 3 and the peripheral current collecting type heat dissipating assemblies of fig. 4, 5 and 35.

The three-layer cavity structure of the type a heat dissipation unit is shown in fig. 26: the axial lower part of the A-type first outer pipe 1e is provided with a lower collecting pipe welding hole, the middle upper part is provided with an upper collecting pipe welding hole, the A-type first layer cavity structure is formed by sleeving the A-type first outer pipe 1e and the A-type first inner pipe 2e, the upper end between the sleeving parts is connected through an upper annular plate 13, and the lower end is connected with a lower annular plate 14; the second layer cavity is formed by the interlayer cavity tubular body of the A-shaped first inner tube 2e with axial communication, the third layer cavity is the central cavity of the A-shaped first inner tube 2e, two radially symmetrical openings are arranged between the adjacent rib plates at the upper end of the wall of the A-shaped first inner pipe 2e, the opening part is used for plugging a second-layer cavity, the second-layer cavity is not communicated with other second-layer cavities of the A-type first inner tube 2e, a communication port of the first-layer cavity and a third-layer cavity is formed, the inner wall of the upper end of the A-type first inner tube 2e is connected with the outer diameter of the sealing upper cover 12a, the sealing upper cover 12a is provided with an extension sealing plate at the communication port, the top of the plugging communication port forms a communication pipeline between the first-layer cavity and the third-layer cavity, the inner wall of the lower end of the A-type first inner tube 2e is connected with the bottom plate 15, the circle center of the sealing upper cover 12a is provided with a deflation oil valve 11 which is communicated with the third-layer cavity, and the connection part is welded to; the transformer oil enters from a collecting pipe welding hole of the first layer cavity, nitrogen is filled into the upper part of the first layer cavity and all the third layer cavity through a gas release oil valve, and the oil level cannot be higher than that of an upper communicating pipeline when the oil temperature rises according to transformer parameters; the transformer oil tank is characterized in that a communicating pipeline which is the same as the upper end is arranged at the lower end of the A-shaped first inner pipe 2e of the heat dissipation monomer, a communicating pipeline at the lower part of the third layer cavity is communicated with transformer oil, nitrogen is filled into the upper parts of the third layer cavity and the first layer cavity through the air release oil valve, the nitrogen can play a role in volume compensation when the volume of the transformer oil changes, and the pressure of the inner cavity of the transformer oil tank and the pressure of the inner cavity of the radiator can meet the design parameters of the transformer when the volume compensation is properly selected.

The type a third layer cavity has a heat dissipation single structure of a bladder corrugated pipe, see fig. 27: the lower end opening of the A-type first inner pipe 2e is made into a communicating pipeline which is the same as the upper end, the inner wall of the lower end of the A-type first inner pipe 2e is welded with an internal thread sealing ring 17, and a corrugated pipe 16 made of a saccular high polymer material is screwed and sealed with a fastening ring 18 with internal and external threads through the bottom of the internal thread sealing ring 17 to form a third layer cavity; the lower part of the oil tank enters transformer oil, the upper part of the oil tank is filled with nitrogen, and the oil tank can be filled with the transformer oil completely according to the design parameters of the transformer. When the bottom of the A-type first inner pipe 2e is not provided with a communicating port, nitrogen can be fully filled according to design parameters of the transformer, the saccular corrugated pipe and the nitrogen can play a role in volume compensation when the volume of the transformer oil changes, and the pressure of the inner cavity of the transformer oil tank and the pressure of the inner cavity of the radiator can meet the design parameters of the transformer when the volume compensation is properly selected.

The heat dissipation single structure with the metal corrugated pipe in the type a third layer cavity is shown in fig. 28: a plurality of radial through holes are axially formed in the communication port of the A-type first inner pipe 2e, holes are formed between adjacent rib plates, the through holes are not communicated with other ventilation cavities of the second layer, the inner wall of the lower end of the A-type first inner pipe 2e is welded with the internal thread sealing ring 17, the annular sealing ring 17a is placed between the external thread flange of the metal corrugated pipe 19 and the internal thread sealing ring 17 and screwed and installed to form a third layer cavity, the third cavity enters transformer oil through the lower communication pipeline at the lower part of the third cavity, nitrogen is filled at the upper part of the third cavity, or the transformer oil can be completely injected according to the design parameters of the transformer, the metal corrugated pipe and the nitrogen can play a role in volume compensation when the volume of the transformer oil changes, and the pressure of the inner cavity of the.

The type a third layer cavity has a structure of a large-diameter metal corrugated pipe and a small-diameter metal corrugated pipe, as shown in fig. 29: different from the figure 28, the upper bottom plate of the metal corrugated pipe 19 with large diameter is connected with the small metal corrugated pipe 21 and communicated with the sealing upper cover 12b, so that the center of the A-shaped first inner pipe 2e is ventilated, the upper end of the small metal corrugated pipe 21 shown in the figure 30 is welded with the hollow bolt 22, the annular sealing ring 17a is arranged between the hollow bolt 22 and the sealing upper cover 12b, the annular sealing ring 17a is arranged between the nut 23 and the sealing upper cover 12b, the nut 23 is tightly screwed with the hollow pipe bolt 22 to form, the center of the A-shaped first inner pipe 2e is provided with an upper ventilation opening and a lower ventilation opening, the lower part of the third layer cavity is filled with transformer oil, the upper part of the third layer cavity is filled with nitrogen, the transformer oil can be completely filled according to the design parameters of the transformer, the large and small metal corrugated pipes 19 and 21 and the nitrogen can play a role in volume compensation when the volume of the transformer oil changes, and the pressure of the inner cavity of the transformer oil tank and the pressure of the inner cavity of the radiator can meet the design parameters of the transformer when the volume compensation is properly selected.

Claims

1. A heat dissipating double-fuselage used in coordination with power transformer, including heat-dissipating monomer, heat-dissipating unit, heat-dissipating assembly, ventilating part, PLC blower control unit, its heat-dissipating assembly is made of aluminum alloy, copper, steel material, the heat-dissipating medium includes transformer oil, sulfur hexafluoride gas, characterized by that the heat-dissipating body is a cavity tube of intermediate layer, form A type, B type heat-dissipating monomer of multiple intermediate layer cavity by inner pipe and outer pipe phase jacket, the heat-dissipating tube wall has axial or radial equipartition, or spiral distributed heat-dissipating wing (10), B type heat-dissipating monomer and converging box (3) make up the heat-dissipating unit, the heat-dissipating assembly of heat-dissipating unit and collecting main, form the heat-dissipating assembly of central current-collecting type, peripheral current-collecting type, its difference lies in A type inner pipe self forms the intermediate layer cavity, there is rib plate to link in the intermediate layer, the adjustable heat dissipation central type heat dissipation assembly consists of an A-shaped heat dissipation monomer and an adjustable heat dissipation central type collecting pipe (4 a); the upper end of the central current-collecting type, peripheral current-collecting type and adjustable heat dissipation central type heat dissipation assembly is provided with an unpowered air inducer (7) and a communicated air inducing barrel (6a), and the lower end is provided with an air collecting pipe (5) and an air collecting cover (6b) which are communicated with a fan (8), so that a heat dissipation device is formed; each group of heat dissipation devices is provided with a sensor and a temperature controller, and a fan is controlled by using a PLC; and oil pumps (9) with required models can be arranged on the flange pipelines of the four collecting pipes according to the requirements of heat dissipation media and heat dissipation efficiency.

2. The heat dissipation device for use with a power transformer as claimed in claim 1, wherein the heat dissipation unit has a tubular structure: the A type is a three-layer cavity, the outer walls of the A type first outer pipe (1e) and the second outer pipe (1L) are provided with radiating fins (10) which are axially or radially uniformly distributed or spirally distributed, the A type first inner pipe (2e) and the second inner pipe (2L) are self-cavity tubular bodies with interlayers which are axially communicated, and the inner wall and the outer wall of each interlayer are connected by a plurality of rib plates to form a plurality of axially communicated ventilation cavities; a-type first outer pipe (1e) and an A-type first inner pipe (2e) or a second outer pipe (1L) and a second inner pipe (2L) are sleeved to form a first layer cavity, a sandwich cavity of the A-type first inner pipe (2e) and the second inner pipe (2L) is a second layer cavity, and a central cavity of the A-type first inner pipe (2e) and the second inner pipe (2L) is a third layer cavity;

the B-type heat dissipation monomer is of a two-layer cavity structure, the inner walls of first to sixth outer pipes (1 f-1 h, 1j, 1k and 1m) of the B-type heat dissipation monomer and the outer walls of inner pipes (2 f-2 h and 2m) of the B-type heat dissipation monomer are connected into a whole through rib plates or two independent and split pipes are sleeved to form the heat dissipation monomer, a first-layer cavity is arranged between the inner pipe and the outer pipe, and the central cavity of first to fourth inner pipes (2 f-2 h and 2m) of the B-type heat dissipation monomer is a second-layer cavity; the inner walls of the B-type first to fourth inner tubes (2 f-2 h, 2m) and the outer walls of the B-type first to sixth outer tubes (1 f-1 h, 1j, 1k, 1m) are provided with radiating fins (10) which are uniformly distributed axially or radially or spirally.

3. A heat sink for use with a power transformer according to claim 1, wherein the manifold box (3) is shaped: the pipe body is rectangular, the wide part is provided with an outer pipe welding hole (3B) and an inner pipe welding hole (3a) which are mutually communicated, the outer pipe welding hole (3B) is matched with an A-type or B-type outer pipe, and the inner pipe welding hole (3a) is matched with an A-type or B-type inner pipe; 3.1) when the collecting box is used for combining with the central collecting pipe (4b), a collecting pipe welding hole (3c) is formed in the middle of the length of the collecting box (3) and is adapted to the central collecting pipe (4b), and two ends of the length of the collecting box are connected with the sealing plate; 3.2) when the converging box (3) is communicated with the peripheral current collecting type single collecting pipe (4c) and the peripheral current collecting pipe (4d), the middle of the length of the converging box (3) is free from a collecting pipe welding hole (3c), and the difference characteristic is that one end of the length of the converging box is welded with the converging box welding hole of the peripheral current collecting type single collecting pipe (4c) or the peripheral current collecting pipe (4d) and the other end of the length of the converging box is welded with a sealing plate.

4. The heat sink for use with a power transformer as claimed in claim 1, wherein the header has a shape: 4.1) the central current-collecting pipe (4B) is a circular pipe, a junction box welding hole matched with the junction box (3) is formed in the pipe, an inner pipe welding hole is formed in the opposite side of the junction box welding hole and matched with an A-type or B-type inner pipe, one end of the central current-collecting pipe (4B) is connected with the sealing plate, and the other end of the central current-collecting pipe is connected with the flange; 4.2) the peripheral current-collecting type monomer current-collecting pipe (4c) is a square or rectangular pipe, the side wall of the pipe is provided with a current-collecting box welding hole and is adaptive to the section shape of the current-collecting box (3), the middle of the opposite outer side of the current-collecting box is communicated with a flange pipe, and the two ends of the current-collecting type monomer current-collecting pipe are connected with a sealing plate; 4.3) the peripheral current collecting pipe (4d) is a square or rectangular pipe to form annular communication, the flange pipe and the square or rectangular pipe form the middle communication of the outer side of the annular pipe wall, and the inner side wall of the current collecting pipe opposite to the flange pipe is provided with a junction box welding hole and is adaptive to the section shape of the junction box (3).

5. The heat sink for use with the power transformer as claimed in claim 1, wherein the heat sink assembly is of the type comprising: a-type outer pipes (1e, 1L) of a plurality of A-type radiating monomers or B-type first to sixth outer pipes (1 f-1 h, 1j, 1k, 1m) of B-type radiating monomers are circumferentially welded with outer pipe welding holes (3B) of a manifold box (3), and two ends of the A-type first and second inner pipes (2e, 2L) or B-type first to fourth inner pipes (2 f-2 h, 2m) penetrate through inner pipe welding holes (3a) on the manifold box (3) and are circumferentially welded at the inner pipe welding holes (3a) on the outer side of the manifold box (3) to form an A-type or B-type radiating unit; a plurality of A-type or B-type radiating units and different combinations of the collecting pipes (4B-4 d) form a radiating assembly, and the type of the radiating assembly is as follows: central current-collecting type and peripheral current-collecting type;

adjustable heat dissipation center current collection formula heat dissipation assembly: collecting pipe welding holes are formed in the bottom end and the middle upper portion of the first outer pipe (1e) and the second outer pipe (1L) of the A-type radiating single body in the radial direction, the collecting pipe welding holes of the A-type radiating single bodies are communicated with a collecting pipe (4a) of an adjustable radiating center to form a radiating unit, the upper end of each radiating single body is higher than a flange pipe at the upper portion, and the specific height of each radiating single body is determined according to design parameters of a transformer; the heat dissipating units are communicated by connecting pipes (4a1), and the transformer side heat dissipating unit (4a) is communicated with the upper flange pipe and the lower flange pipe.

6. The heat dissipation device used in cooperation with the power transformer as claimed in claim 1, wherein the heat dissipation unit has an a-type three-layer cavity structure: 6.1) the A-shaped first layer cavity structure is formed by sleeving an A-shaped first outer pipe (1e) and a first inner pipe (2e), wherein the upper ends of the sleeved A-shaped first outer pipe and the sleeved A-shaped first inner pipe are connected through an upper annular plate (13), and the lower ends of the sleeved A-shaped first layer cavity structure and the sleeved A-shaped first inner pipe are connected through a lower annular plate (14); the second layer cavity is formed by a sandwich cavity tubular body of an A-shaped first inner tube (2e) with axial communication, the third layer cavity is a central cavity of the A-shaped first inner tube (2e), two radially symmetrical openings are arranged between adjacent rib plates at the upper end of the wall of the A-shaped first inner tube (2e), the second layer cavity is blocked at the opening, the second layer cavity is not communicated with other second layer cavities of the A-shaped first inner tube (2e) to form a communication port between the first layer cavity and the third layer cavity, the inner wall at the upper end of the A-shaped first inner tube (2e) is connected with the outer diameter of a sealing upper cover (12a), the sealing upper cover (12a) is provided with an extension sealing plate at the communication port, the top of the blocking communication port forms a communication pipeline between the first layer cavity and the third layer cavity, the inner wall at the lower end of the A-shaped first inner tube (2e) is connected with a bottom plate (15), the circle center of the sealing upper cover (12a) is provided with a deflation oil valve (11) communicated with the, the joint is welded to form a third layer cavity; the transformer oil enters from a collecting pipe welding hole of the first layer cavity, nitrogen is filled into the upper part of the first layer cavity and all the third layer cavity through a gas release oil valve, and the oil level cannot be higher than that of an upper communicating pipeline when the oil temperature rises according to transformer parameters; 6.2) the different characteristics are that the lower end of the A-shaped first inner tube (2e) of the heat radiation monomer is provided with a communicating pipeline which is the same as the upper end, a communicating pipeline at the lower part of the third layer cavity enters the transformer oil, and nitrogen is filled into the upper parts of the third layer cavity and the first layer cavity through a gas release oil valve.

7. The heat dissipating device of claim 6, wherein the heat dissipating unit is a heat dissipating single structure with a corrugated tube in the cavity of the type a third layer: 7.1) a communicating pipeline which is the same as the upper end is arranged on the lower end wall of the A-type first inner pipe (2e), the inner wall of the lower end of the A-type first inner pipe (2e) is welded with an internal thread sealing ring (17), and a saccular corrugated pipe (16) made of high polymer material is screwed and sealed with a fastening ring (18) with internal and external threads through the bottom of the internal thread sealing ring (17) to form a third layer cavity; the lower part of the oil tank enters transformer oil, the upper part of the oil tank is filled with nitrogen, or the oil tank is filled with the transformer oil according to the design parameters of the transformer; 7.2) when the bottom of the A-type first inner tube (2e) is not provided with a communication port, filling nitrogen according to the design parameters of the transformer.

8. The heat dissipating device of claim 6, wherein the heat dissipating unit has a heat dissipating single structure with a metal corrugated tube in the cavity of the third layer, the metal corrugated tube is disposed in the cavity of the third layer: a plurality of radial through holes are formed between adjacent rib plates of an A-type first inner pipe (2e) in the axial direction of an upper communication port and a lower communication port, the adjacent rib plates are provided with holes, the through holes are separated from other ventilation cavities of a second layer and are not communicated, the inner wall of the lower end of the A-type first inner pipe (2e) is welded with an internal thread sealing ring (17), an external thread flange of a metal corrugated pipe (19) is screwed with an internal thread of the sealing ring (17), an annular sealing ring (17a) is arranged in the middle of the A-type first inner pipe to form a third layer cavity, transformer oil enters the lower portion of the third layer cavity, nitrogen is filled in the.

9. The heat dissipating device used in combination with the power transformer as claimed in claim 6, wherein the difference is that the a-type third layer cavity has a heat dissipating single structure with large and small diameter metal corrugated tubes: the upper bottom plate of the large-diameter metal corrugated pipe (19) is connected with the small-diameter metal corrugated pipe (21) and communicated with the sealing upper cover (12b), so that the center of the A-type first inner pipe (2e) is ventilated, the upper end of the small-diameter metal corrugated pipe (21) is welded with the hollow bolt (22), an annular sealing ring (17a) is arranged between the hollow bolt (22) and the sealing upper cover (12b), the annular sealing ring (17a) is arranged between the nut (23) and the sealing upper cover (12b), the nut (23) and the hollow bolt (22) are screwed and installed to form an upper vent and a lower vent in the center of the inner pipe (2e), the lower part of a third layer cavity of the inner pipe enters transformer oil, the upper part of the inner pipe is filled with nitrogen.

10. The heat sink assembly of claim 1, wherein the heat sink assembly is capable of independently functioning as a heat sink assembly for use with a transformer when the design parameters of the transformer are met.