CN115985639A - Bury transformer on modular - Google Patents

Abstract

The invention discloses a modular buried transformer which comprises a box body, a transformer, a heat dissipation mechanism, a turbulence mechanism, a high-voltage fuse, a high-voltage elbow type cable head, a low-voltage wiring terminal, a composite heat conducting rod, a pre-buried base and a ground plug. The device simple structure adopts and derives the heat outdoor and then channel into the underground structural design fast, very big improvement the radiating effect, simultaneously, adopts the pre-buried base of the aluminium base board of integrated heat dissipation, can direct on-the-spot quick installation, very big shortening construction cycle when improving the radiating effect.

Description

Module type underground transformer

Technical Field

The invention relates to a transformer, in particular to a modular underground transformer.

Background

The transformer is one of the most important devices in the power system, as a hub device of the power system, which is responsible for voltage variation between grids and electric energy conversion, and therefore, the reliability of the operation of the transformer directly affects the safety of the power system. The fault of the transformer can be found in time, and the power accident caused by the transformer can be effectively prevented. An underground oil-immersed power transformer is a common type of transformer, the inside of the transformer is insulated and radiated by oil, radiating fins are designed on the outside of the transformer for radiating, the underground transformer is often installed in a foundation pit, the excavation amount of earth and stone and the using amount of concrete are large in the foundation pit building process, and the existing heat radiating structure of the underground transformer only depending on the outside of a box body of the existing underground transformer is difficult to radiate heat efficiently in the closed foundation pit, so that the service life of the underground transformer is shortened. In view of the above drawbacks, it is necessary to design a modular buried transformer.

Disclosure of Invention

The invention aims to provide a modular underground transformer, which adopts a structural design of rapidly leading heat out of the room and further leading the heat into the ground, thereby greatly improving the heat dissipation effect.

In order to solve the technical problems, the technical scheme of the invention is as follows: the utility model provides a bury transformer with modular, includes box, transformer, heat dissipation mechanism, vortex mechanism, high-pressure fuse, high-pressure elbow type cable head, low pressure binding post, compound heat conduction stick, pre-buried base, inserts, the transformer install in the box inboard, the box inboard fill insulating oil, heat dissipation mechanism quantity be no less than 4, the symmetry is installed around the box, 4 are no less than to the quantity of vortex mechanism, the symmetric arrangement is around the transformer, high-pressure fuse install in the box upper end and link to each other with the transformer electricity, high-pressure elbow type cable head install in the box upper end and link to each other with the transformer electricity, low pressure binding post install in the box upper end and link to each other with the transformer electricity, compound heat conduction stick install in the heat dissipation mechanism outside, pre-buried base be located the box lower extreme and be located compound heat conduction stick lower extreme, pre-buried base pass through the bolt with box and compound heat conduction stick respectively and link to each other, ground insert and be located pre-buried base lower extreme, ground insert and pass through the bolt with pre-buried base and link to each other.

The invention is further improved as follows:

furthermore, the transformer still include coil, clamp plate, double-screw bolt, the clamp plate place in both sides about the coil, the double-screw bolt run through the clamp plate and compress tightly clamp plate and coil, the material of clamp plate is laminated wood, the cross-sectional shape of coil is oval, the coil will bear very big electric power in the in-process of operation, low-voltage coil bears inward electric power under the short circuit condition, high-voltage coil bears outside electric power, the traditional transformer coil that the cross-section is long circle is at the during operation, receive the electric power effect great probability to appear warping in long circle straightway, shortened the life of transformer, consequently, adopt oval design coil, the atress is even, has stronger structural strength, rethread group double-screw bolt cooperation leads to the clamp plate to the coil tightly compresses tightly, and the wholeness is good under the short circuit condition, can bear short circuit deformation, avoid the problem that the transformer life that the short circuit leads to shorten.

Furthermore, the heat dissipation mechanism further comprises an outer sleeve, a first heat conduction rod, a second heat conduction rod, fins and a heat dissipation flat plate, wherein the number of the outer sleeve is not less than 2, the outer sleeve is symmetrically arranged along the vertical direction of the box body, one end of the first heat conduction rod is inserted into the outer sleeve, the first heat conduction rod is connected with the outer sleeve in an interference fit mode, the other end of the first heat conduction rod is inserted into the inner side of the box body, the second heat conduction rod penetrates through the first heat conduction rod and is located on the inner side of the box body, the second heat conduction rod is connected with the first heat conduction rod in an interference fit mode, the fins are penetrated through by the second heat conduction rod, the fins are connected with the second heat conduction rod in a welding mode, the heat dissipation flat plate is penetrated through the outer sleeve, the heat dissipation flat plate is connected with the outer sleeve in a welding mode, the fins made of red copper can absorb heat of insulating oil nearby the turbulence mechanism and can be rapidly transmitted to the heat dissipation flat plate through the second heat conduction rod made of the red copper, heat dissipation flat plate, heat in the box body can be transmitted to the heat dissipation flat plate through the heat dissipation flat plate, in the heat dissipation plate, on the one hand, on the other hand, the heat of the insulating oil in the box body can be transmitted to the low-temperature area from the high-temperature area in an accelerating mode, and the utilization rate of the insulating oil can be improved.

Further, vortex mechanism still include support, connecting rod, grafting piece, trembler, the quantity of support is 2, along the upper and lower direction symmetrical arrangement of transformer, the connecting rod run through the support, the connecting rod pass through the bolt with the support and link to each other, the grafting piece is run through by the connecting rod and is located the coil outside, grafting piece and connecting rod screw thread link to each other, the trembler install in the grafting piece outside, because vortex mechanism links firmly with the transformer, produce heat and vibration when transformer during operation, vibration transmits the connecting rod for through the support to the trembler vibration that drives and peg graft the piece and link firmly, and then produce thrust to the insulating oil around the trembler and make insulating oil local flow, realize thermal transmission.

Furthermore, the vibrating plate is made of red copper and is 0.3-0.5mm thick.

Furthermore, compound heat conduction stick still include fine pipe of glass, third heat conduction stick, the third heat conduction stick install in the dull and stereotyped outside of dispelling the heat, fine pipe of glass suit in the outside of third heat conduction stick, fine pipe of glass is used for keeping warm thermal-insulated and protection, improves the heat conduction effect of third heat conduction stick.

Further, the embedded base further comprises an aluminum substrate, a concrete member and an anchor hook, the aluminum substrate is located at the lower end of the third heat conducting rod and located at the lower end of the box body, the aluminum substrate is connected with the third heat conducting rod and the box body through bolts respectively, the top of the aluminum substrate is embedded in the top of the concrete member, the upper end face of the concrete member is overlapped with the upper end face of the aluminum substrate, the anchor hook is located between the aluminum substrate and the concrete member, and the anchor hook is fixedly riveted with the aluminum substrate.

Furthermore, the ground plug also comprises a second sleeve and a fourth heat-conducting rod, the fourth heat-conducting rod is installed at the lower end of the aluminum substrate, the second sleeve is sleeved outside the fourth heat-conducting rod and connected with the aluminum substrate through a bolt, heat conducted by the heat-radiating mechanism is conducted underground through the third heat-conducting rod, the aluminum substrate and the fourth heat-conducting rod, the heat-radiating effect is improved, meanwhile, the third heat-conducting rod can also fix the box body, the installation reliability is improved, the second sleeve is made of stainless steel and can be directly inserted into a mud and sand activating ground during installation, so that the embedded base is fixed, meanwhile, the fourth heat-conducting rod can quickly conduct heat absorbed by the aluminum substrate underground, and efficient heat radiation is achieved.

Furthermore, the first heat conduction rod, the second heat conduction rod, the third heat conduction rod and the fourth heat conduction rod are made of red copper, and the aluminum substrate can absorb heat transferred by the third heat conduction rod and the bottom of the box body and is transmitted underground by the fourth heat conduction rod, so that the heat dissipation effect and the efficiency are improved.

Compared with the prior art, the modular buried transformer has the advantages that during installation, the ground insert is inserted into the soil pit, the embedded base and the ground insert are prevented from being in the soil pit and are fixedly connected with the ground insert, the assembled box body is placed on the embedded base and is fixedly connected with the embedded base, and finally the composite heat conducting rod is installed and fixed; during operation, high-tension electricity is in the transformer through high-pressure elbow type cable head input, pass through low voltage binding post output after transformer vary voltage, in this process, transformer work produces vibration and heat, vortex mechanism disturbs its insulating oil on every side through the vibration excitation of transformer, thereby with heat homodisperse around vortex mechanism, heat dissipation mechanism absorbs the heat of vortex mechanism insulating oil on every side fast, partly heat is through heat dissipation mechanism to box inner wall department transmission, another part heat is passed through compound heat conduction stick fast and is given pre-buried base and insert the underground through ground, the heat also can carry out the heat exchange at the in-process of transmission, very big improvement radiating efficiency. The high-voltage fuse is a high-voltage current-limiting fuse and is integrally installed on the transformer, so that a whole is formed, the high-voltage fuse is prevented from being exposed outdoors, the protection design of the fuse is saved, and the protection performance of the fuse is greatly improved. The device simple structure adopts and derives the heat outdoor and then channel into underground structural design fast, very big improvement the radiating effect, simultaneously, adopts the pre-buried base of the aluminium base board of integrated heat dissipation, can direct on-the-spot quick installation, and the very big construction cycle that has shortened when improving the radiating effect.

Drawings

FIG. 1 shows a schematic diagram of the structure of the present invention

FIG. 2 is a schematic diagram of a transformer according to the present invention

FIG. 3 is a schematic view of the heat dissipation mechanism of the present invention

FIG. 4 is a schematic view of a flow disturbing mechanism according to the present invention

In the figure: the heat dissipation device comprises a box body 1, a transformer 2, a heat dissipation mechanism 3, a turbulence mechanism 4, a high-voltage fuse 5, a high-voltage elbow-shaped cable head 6, a low-voltage wiring terminal 7, a composite heat conduction rod 8, a pre-embedded base 9, a ground plug 10, a coil 201, a pressing plate 202, a stud 203, an outer sleeve 301, a first heat conduction rod 302, a second heat conduction rod 303, a fin 304, a heat dissipation flat plate 305, a support 401, a connecting rod 402, a plug-in block 403, a vibrating piece 404, a glass fiber tube 801, a third heat conduction rod 803, an aluminum substrate 901, a concrete piece 902, an anchor hook 903, a second sleeve 1001 and a fourth heat conduction rod 1002.

Detailed Description

As shown in fig. 1, 2, 3 and 4, a modular buried transformer comprises a box body 1, a transformer 2, a heat dissipation mechanism 3, a turbulence mechanism 4, a high-voltage fuse 5, a high-voltage elbow cable head 6, a low-voltage wiring terminal 7, a composite heat conduction rod 8, a pre-buried base 9 and a ground plug 10, wherein the transformer 2 is installed inside the box body 1, the inner side of the box body 1 is filled with insulating oil, the heat dissipation mechanism 3 is not less than 4 in number and symmetrically installed around the box body 1, the turbulence mechanism 4 is not less than 4 in number and symmetrically arranged around the transformer 2, the high-voltage fuse 5 is installed at the upper end of the box body 1 and electrically connected with the transformer 2, the high-voltage elbow cable head 6 is installed at the upper end of the box body 1 and electrically connected with the transformer 2, the low-voltage wiring terminal 7 is installed at the upper end of the box body and electrically connected with the transformer 2, the composite heat conduction rod 8 is installed at the outer side of the heat dissipation mechanism 3, the embedded base 9 is positioned at the lower end of the box body 1 and at the lower end of the composite heat conducting rod 8, the embedded base 9 is respectively connected with the box body 1 and the composite heat conducting rod 8 through bolts, the ground plug 10 is positioned at the lower end of the embedded base 9, the ground plug 10 is connected with the embedded base 9 through bolts, the transformer 2 further comprises a coil 201, a pressing plate 202 and studs 203, the pressing plate 202 is placed on the upper side and the lower side of the coil 201, the studs 203 penetrate through the pressing plate 202 and tightly press the pressing plate 202 and the coil 201, the pressing plate 202 is made of laminated wood, the cross section of the coil 201 is oval, the coil 201 needs to bear very large electrodynamic force in the operation process, a low-voltage coil bears inward electrodynamic force under the condition of short circuit, a high-voltage coil bears outward electrodynamic force, and a traditional transformer coil with a long cross section works, the deformation is generated at a high probability under the action of electric power on the long circular straight line section, the service life of the transformer 2 is shortened, therefore, the coil 201 is designed to be oval, the stress is uniform, the structural strength is high, the coil 201 is tightly pressed through the matching of a plurality of groups of studs 203 and the pressing plate 202, the integrity is good under the condition of short circuit, the short circuit deformation is good, and the problem of the shortening of the service life of the transformer 2 caused by the short circuit is avoided, the heat dissipation mechanism 3 further comprises an outer sleeve 301, a first heat conduction rod 302, a second heat conduction rod 303, fins 304 and a heat dissipation flat plate 305, the number of the outer sleeve 301 is not less than 2, the outer sleeve 301 is symmetrically arranged along the vertical direction of the box body 1, one end of the first heat conduction rod 302 is inserted into the outer sleeve 301, the first heat conduction rod 302 is connected with the outer sleeve in an interference fit manner, the other end of the first heat conduction rod 302 is inserted into the inner side of the box body 1, the second heat conducting rod 303 penetrates through the first heat conducting rod 302 and is located on the inner side of the box body 1, the second heat conducting rod 303 is connected with the first heat conducting rod 301 in an interference fit mode, the fins 304 are penetrated through by the second heat conducting rod 303, the fins 304 are connected with the second heat conducting rod 303 in a welding mode, the radiating flat plate 305 is penetrated through by the outer sleeve 301, the radiating flat plate 305 is connected with the outer sleeve 301 in a welding mode, the fins 304 made of red copper absorb heat of insulating oil near the turbulence mechanism 4 and quickly transmit the heat to the radiating flat plate 305 through the second heat conducting rod 303 made of red copper, so that the heat in the box body 2 is transmitted to the outer side of the box body 2, in the process, the fins 304 made of red copper can transmit the heat on one hand, and can accelerate the transmission of the heat of the insulating oil in the box body 2 from a high-temperature area to a low-temperature area on the other hand, the utilization rate of the insulating oil is improved, and the turbulence mechanism 4 further comprises a support 401, the transformer comprises connecting rods 402, inserting blocks 403 and vibrating pieces 404, wherein the number of the brackets 401 is 2, the brackets are symmetrically arranged along the vertical direction of the transformer 2, the connecting rods 402 penetrate through the brackets 401, the connecting rods 402 are connected with the brackets 401 through bolts, the inserting blocks 403 are penetrated through by the connecting rods 402 and are positioned on the outer sides of the coils 201, the inserting blocks 403 are in threaded connection with the connecting rods 402, the vibrating pieces 404 are arranged on the outer sides of the inserting blocks 403, as the turbulence mechanisms 4 are fixedly connected with the transformer 2, heat and vibration are generated when the transformer 2 works, the vibration is transmitted to the connecting rods 402 through the brackets 401, so that the vibrating pieces 404 fixedly connected with the inserting blocks 403 are driven to vibrate, as the heat generated by the transformer 2 at the accessories of the coils 201 is the largest and is difficult to be rapidly transmitted, and therefore, when the vibrating pieces 404 vibrate, thrust can be generated on the insulating oil around the vibrating pieces so that the insulating oil flows locally, the composite heat conducting rod 8 further comprises a glass fiber tube 801 and a third heat conducting rod 802, the third heat conducting rod 802 is installed on the outer side of the radiating flat plate 305, the glass fiber tube sleeve 801 is sleeved on the outer side of the third heat conducting rod 802, the glass fiber tube 801 is used for heat preservation, heat insulation and protection, the heat conducting effect of the third heat conducting rod 803 is improved, the embedded base 9 further comprises an aluminum substrate 901, a concrete member 902 and an anchor hook 903, the aluminum substrate 901 is located at the lower end of the third heat conducting rod 802 and located at the lower end of the box body 1, the aluminum substrate 901 is respectively connected with the third heat conducting rod 802 and the box body 1 through bolts, the aluminum substrate 901 is embedded in the top of the concrete member 902, the upper end surface of the concrete member 902 is overlapped with the upper end surface of the aluminum substrate 901, the anchor hook 903 is positioned between the aluminum substrate 901 and the concrete member 902, the anchor hook 903 is riveted and fixed with the aluminum substrate 901, the ground plug 10 further comprises a second sleeve 1001 and a fourth heat conduction rod 1002, the fourth heat conduction rod 1002 is installed at the lower end of the aluminum substrate 901, the second sleeve 1001 is sleeved outside the fourth heat conduction rod 1002 and is connected with the aluminum substrate 901 through bolts, heat conducted out by the heat dissipation mechanism 3 is conducted underground through the third heat conduction rod 803, the aluminum substrate 901 and the fourth heat conduction rod 1002, the heat dissipation effect is improved, meanwhile, the third heat conduction rod 803 can also fix the box body 1, the installation reliability is improved, the second sleeve 1001 is made of stainless steel, when being installed, the modular buried transformer can be directly inserted into a muddy live sand ground to fix the embedded base 9, meanwhile, the fourth heat conducting rod 1002 can quickly guide heat absorbed by the aluminum substrate 901 into the underground to realize efficient heat dissipation, the first heat conducting rod 302, the second heat conducting rod 303, the third heat conducting rod 803 and the fourth heat conducting rod 1002 are all made of red copper, the aluminum substrate 901 can absorb heat transmitted by the third heat conducting rod 803 and the bottom of the box body 2 and is transmitted into the underground through the fourth heat conducting rod 1002 to improve the heat dissipation effect and efficiency, during installation, the ground insert 10 is inserted into a soil pit, the embedded base 9 is prevented from being in the soil pit and is connected and fixed with the ground insert 10, the assembled box body 1 is placed on the embedded base 9 and is connected and fixed with the embedded base, and finally the composite heat conducting rod 8 is installed and fixed; during operation, high-voltage electricity is in the input transformer 2 through high-pressure elbow type cable head 6, pass through low pressure binding post 7 output after transformer 2 vary voltage, in this process, transformer 2 work produces vibration and heat, vortex mechanism 4 is through the vibration excitation of transformer 2 with the insulating oil disturbance around it, thereby with heat homodisperse around vortex mechanism, heat of vortex mechanism 4 insulating oil all around is absorbed fast to heat dissipation mechanism 3, a part of heat is through the transmission of heat dissipation mechanism 3 to 1 inner wall department of box, another part of heat is through 8 quick transmissions of compound heat conduction stick for pre-buried base 9 and insert 10 through ground and pass into the underground, the heat also can carry out the heat exchange at the in-process of transmission, very big improvement radiating efficiency. The high-voltage fuse 5 is a high-voltage current-limiting fuse and is integrally installed on the transformer 2, so that a whole is formed, the exposure outdoors is avoided, the protection design of the fuse is saved, and the protection performance of the fuse is greatly improved. The device simple structure adopts and derives the heat outdoor and then channel into the underground structural design fast, very big improvement the radiating effect, simultaneously, adopts the pre-buried base of the aluminium base board of integrated heat dissipation, can direct on-the-spot quick installation, very big shortening construction cycle when improving the radiating effect.

The present invention is not limited to the above-described embodiments, and various modifications made by those skilled in the art without inventive skill from the above-described conception fall within the scope of the present invention.

Claims (9)

1. The utility model provides a bury transformer modularly, its characterized in that includes box, transformer, heat dissipation mechanism, vortex mechanism, high-pressure fuse, high-pressure elbow type cable head, low pressure binding post, compound heat conduction stick, pre-buried base, inserts with ground, the transformer install in the box inboard, the box inboard fill insulating oil, heat dissipation mechanism quantity be no less than 4, the symmetry is installed around the box, 4 are no less than to the quantity of vortex mechanism, the symmetric arrangement is around the transformer, high-pressure fuse install in the box upper end and link to each other with the transformer electricity, high-pressure elbow type cable head install in the box upper end and link to each other with the transformer electricity, low pressure binding post install in the box upper end and link to each other with the transformer electricity, compound heat conduction stick install in the heat dissipation mechanism outside, pre-buried base be located the box lower extreme and be located compound heat conduction stick lower extreme, pre-buried base pass through the bolt with box and compound heat conduction stick respectively and link to each other, ground insert and to be located pre-buried base lower extreme with pre-buried base and pass through the bolt and link to each other.

2. The modular buried transformer of claim 1, further comprising a coil, a pressing plate, and studs, wherein the pressing plate is placed on the upper and lower sides of the coil, the studs penetrate through the pressing plate and press the pressing plate and the coil tightly, the pressing plate is made of laminated wood, and the cross-section of the coil is oval.

3. The modular buried transformer according to claim 1, wherein the heat dissipating mechanism further comprises an outer sleeve, a first heat conducting rod, a second heat conducting rod, fins, and a heat dissipating plate, the number of the outer sleeves is not less than 2, the outer sleeves are symmetrically arranged along the vertical direction of the case, one end of the first heat conducting rod is inserted into the outer sleeve, the first heat conducting rod is connected with the outer sleeve in an interference fit manner, the other end of the first heat conducting rod is inserted into the inside of the case, the second heat conducting rod penetrates through the first heat conducting rod and is positioned inside the case, the second heat conducting rod is connected with the first heat conducting rod in an interference fit manner, the fins are penetrated by the second heat conducting rod, the fins are connected with the second heat conducting rod in a welding manner, the heat dissipating plate is penetrated by the outer sleeve, and the heat dissipating plate is connected with the outer sleeve in a welding manner.

4. The modular buried transformer of claim 2, wherein the spoiler further comprises 2 brackets, connecting rods, insertion blocks, and vibration plates, the brackets are symmetrically arranged along the top-bottom direction of the transformer, the connecting rods penetrate through the brackets, the connecting rods are connected to the brackets by bolts, the insertion blocks are penetrated through by the connecting rods and located outside the coils, the insertion blocks are connected to the connecting rods by screw threads, and the vibration plates are mounted outside the insertion blocks.

5. The modular buried transformer of claim 4, wherein the vibrating plate is made of red copper and has a thickness of 0.3-0.5mm.

6. The modular buried transformer of claim 3, wherein the composite heat conducting rod further comprises a glass fiber tube and a third heat conducting rod, the third heat conducting rod is installed on the outer side of the heat dissipating plate, and the glass fiber tube is sleeved on the outer side of the third heat conducting rod.

7. The modular buried transformer according to claim 6, wherein the pre-buried base further comprises an aluminum substrate, a concrete member and an anchor hook, the aluminum substrate is located at the lower end of the third heat conducting rod and at the lower end of the box body, the aluminum substrate is respectively connected with the third heat conducting rod and the box body through bolts, the aluminum substrate is pre-buried in the top of the concrete member, the upper end surface of the concrete member is overlapped with the upper end surface of the aluminum substrate, the anchor hook is located between the aluminum substrate and the concrete member, and the anchor hook is riveted and fixed with the aluminum substrate.

8. The modular buried transformer of claim 7, wherein the ground plug further comprises a second sleeve and a fourth heat conducting rod, the fourth heat conducting rod is mounted on the lower end of the aluminum substrate, the second sleeve is sleeved on the outer side of the fourth heat conducting rod and connected to the aluminum substrate through bolts.

9. The modular buried transformer of claim 8, wherein the first, second, third and fourth heat-conducting rods are made of red copper.

Images