CN113972051A - Water cooling device for transformer - Google Patents
Water cooling device for transformer Download PDFInfo
- Publication number
- CN113972051A CN113972051A CN202111188412.9A CN202111188412A CN113972051A CN 113972051 A CN113972051 A CN 113972051A CN 202111188412 A CN202111188412 A CN 202111188412A CN 113972051 A CN113972051 A CN 113972051A
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- Prior art keywords
- transformer
- water
- water cooling
- shell
- cooling
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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
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/16—Water cooling
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transformer Cooling (AREA)
Abstract
The invention discloses a water cooling device for a transformer, which comprises: a shell and a water-cooled tube; the shell comprises an upper opening and a lower opening and is placed on the water-cooling plate, and the transformer is placed in a cavity formed by the shell and the water-cooling plate; the water cooling pipes are arranged inside each wall surface of the shell. The water cooling device for the transformer provided by the invention has the advantages that six sides of the transformer are cooled in a water cooling mode, the water cooling effect is better than natural cooling and air cooling, no noise exists, the restriction of the environment is avoided, the operation stability and reliability of the transformer are ensured, the water cooling device is suitable for high-power application occasions, the water cooling effect is good, and the heat dissipation is rapid. The casing and the inside processing of apron have a plurality of pipelines, and cooling water loops through behind every pipeline behind the entering pipeline, flows out from the export, and at this in-process, thereby the cooling water takes away the heat and guarantees that the operating temperature of transformer is in the safety range. Can meet the requirements of high-power occasions, has good water cooling effect and can dissipate heat quickly.
Description
Technical Field
The invention belongs to the technical field of transformers, and particularly relates to a water cooling device for a transformer.
Background
During transformer operation, heat generated by losses in the windings and core must be dissipated in time to avoid insulation damage due to overheating. For a small-capacity transformer, the ratio of the external surface area to the volume of the transformer is relatively large, and heat can be dissipated by radiation and natural convection in a self-cooling mode. However, as the capacity of the transformer increases, the volume and the loss of the transformer are greatly increased, and the natural cooling time is long and the speed is slow. The existing heat dissipation mode is generally air cooling heat dissipation: the cooling air is blown across the heat sink by a blower or small fan to enhance the heat dissipation effect. However, the air-cooled heat dissipation is greatly restricted by the surrounding environment and has certain noise.
Disclosure of Invention
Aiming at the defects or the improvement requirements of the prior art, the invention provides a transformer water cooling device, so that the technical problem that the existing heat dissipation mode is greatly restricted by the environment is solved.
To achieve the above object, according to one aspect of the present invention, there is provided a transformer water cooling apparatus including: a shell and a water-cooled tube;
the shell comprises an upper opening and a lower opening and is placed on the water-cooling plate, and the transformer is placed in a cavity formed by the shell and the water-cooling plate;
the water cooling pipes are arranged inside each wall surface of the shell.
Preferably, the shell is provided with an outlet hole and an inlet hole of the transformer winding, and the outlet hole and the inlet hole are inclined downwards.
Preferably, the outlet hole and the inlet hole are arranged on two side surfaces of the shell.
Preferably, the angle of downward inclination of the wire outlet hole and the wire inlet hole is greater than or equal to the angle of inclination of a transformer winding outgoing wire.
Preferably, the water cooling device further comprises a detachable cover plate with a water cooling pipe arranged inside.
Preferably, the gap between the cavity and the transformer is filled with a pouring sealant.
Preferably, the housing is provided with a pouring sealant injection hole.
Preferably, the shell is provided with a cooling water inlet and a cooling water outlet.
Preferably, the bottom of the shell is provided with a fixing hole.
Preferably, a temperature sensor for measuring the temperature of the transformer is further included.
In general, compared with the prior art, the above technical solution contemplated by the present invention can achieve the following beneficial effects:
1. the water cooling device for the transformer provided by the invention has the advantages that six sides of the transformer are cooled in a water cooling mode, the water cooling effect is better than natural cooling and air cooling, no noise exists, the restriction of the environment is avoided, the operation stability and reliability of the transformer are ensured, the water cooling device is suitable for high-power application occasions, the water cooling effect is good, and the heat dissipation is rapid.
2. According to the transformer water cooling device provided by the invention, the wire outlet and the wire inlet of the transformer winding on the shell are in inclined shapes, so that the length and the bending degree of the winding are reduced, the space in the water cooling device can be saved while the transformer loss is reduced, and the volume of the water cooling device is effectively reduced.
3. The pouring sealant adopted by the invention is a bi-component/low-viscosity epoxy resin product, and has the advantages of high-temperature stability, excellent electrical insulation, excellent heat dissipation performance, low viscosity, good durability and the like.
Drawings
Fig. 1 is a schematic view of a transformer water cooling apparatus according to the present invention.
Fig. 2 is a schematic view of a water cooling pipeline of a shell of a transformer water cooling device provided by the invention.
Fig. 3 is a schematic view of a water cooling pipeline of a cover plate of a water cooling device of a transformer provided by the invention.
Fig. 4 is a second schematic diagram of a transformer water cooling apparatus according to the present invention.
The same reference numbers will be used throughout the drawings to refer to the same or like elements or structures, wherein:
the method comprises the following steps of 1-cover plate, 2-shell, 3-water outlet, 4-water inlet, 5-pouring sealant injection hole, 6-temperature sensor access port, 7-fixing hole, 8-wire outlet, 9-water cooling pipe, 10-secondary winding, 11-primary winding and 12-wire inlet hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
An embodiment of the present invention provides a transformer water cooling apparatus, as shown in fig. 1, including: a shell 2 and a water cooling pipe;
the shell comprises an upper opening and a lower opening and is placed on the water-cooling plate, and the transformer is placed in a cavity formed by the shell and the water-cooling plate;
the water cooling pipes are arranged inside each wall surface of the shell.
Preferably, the shell is provided with a cooling water inlet 4 and a cooling water outlet 3.
Preferably, the water-cooling type water-cooling device also comprises a detachable cover plate 1 with a water-cooling pipe 9 arranged inside.
The shell is designed according to the shape of the transformer and is fixed above the water-cooling plate of the prototype; as shown in fig. 2-3, water cooling pipes are formed in the housing, the cover plate and the water cooling plate, and cooling water flows in through the water inlet and flows out through the water outlet after flowing through each flow channel to take away heat.
A plurality of pipelines are processed in the shell and the cover plate, cooling water enters the pipelines from the inlet, sequentially passes through each pipeline and then flows out from the outlet, in the process, the cooling water takes away heat so as to ensure that the working temperature of the transformer is in a safe range,
preferably, the water inlet and the water outlet are arranged on the same side of the device.
Because the magnetic core loss of transformer is great, and the heat dissipation requires highly, install the apron additional above the transformer water cooling plant casing, transformer water cooling plant is six heat dissipations promptly.
The cover plate of the transformer water cooling device is of a detachable structure, so that the transformer can be conveniently placed.
The cover plate can be fixed on one side of the shell through the mounting hole, and is convenient to detach and mount the transformer.
Preferably, the water cooling pipe is arranged inside the shell or the cover plate in an S-shaped processing mode.
Preferably, as shown in fig. 1, the housing is provided with an outlet hole 8 and an inlet hole 12 for the outlet of the transformer winding, and the outlet hole 8 and the inlet hole 12 are inclined downwards.
Preferably, the outlet hole and the inlet hole are arranged on two side surfaces of the shell.
Preferably, the angle of downward inclination of the wire outlet hole and the wire inlet hole is greater than or equal to the angle of inclination of a transformer winding outgoing wire.
Further, the transformer is a litz wire winding. Two ends of an outgoing line of an original secondary litz wire winding of the transformer installed in the water cooling device are led in and led out from two side surfaces of the shell through an outgoing line hole and an incoming line hole respectively, and the outgoing line hole and the incoming line hole are inclined, so that the length and the bending degree of a winding are reduced, and a certain space can be saved.
As shown in fig. 4, the outlet hole and the inlet hole of the winding of the transformer are inclined downward along the direction in which the winding protrudes from the case, i.e., the outlet direction, preferably, the angle inclined downward along the winding direction is 30 ° to 45 °, and accordingly, the inclination angle of the hole is equal to or greater than the inclination angle of the winding, so as to reduce the winding loss, thereby reducing the loss of the transformer. The inclination angles of the wire outlet hole and the wire inlet hole can be the same or different.
As shown in fig. 4, since the transformer has a primary winding 11 and a secondary winding 10, the outlet hole and the inlet hole are preferably disposed on the side of the housing. The wire outlet hole and the wire inlet hole on one side are used for leading in and leading out the input end and the output end of the primary winding wire respectively, and the wire outlet hole and the wire inlet hole on the other side are used for leading in and leading out the input end and the output end of the secondary winding wire.
The winding outgoing line is taken out or put in from the shell along the winding direction and trend, so that the winding outgoing line does not need to be additionally bent, the outgoing line hole and the incoming line hole on the shell are matched with the trend direction of winding, and the outgoing line hole and the incoming line hole form an inclination angle of 30-45 degrees with the ground. Therefore, the contact between the transformer and the shell can be ensured to be more compact, the heat dissipation is facilitated, and the installation is better.
Preferably, the gap between the cavity and the transformer is filled with a pouring sealant.
Specifically, the shell is fixed after the transformer is installed in the residual space, which is filled with the potting adhesive, and the adopted potting adhesive has good heat conduction capability.
Further, the cover plate is provided with a pouring sealant injection hole 5, and pouring sealant is injected into the shell through a hole in the cover plate.
Preferably, the potting compound is a two-component/low-viscosity epoxy resin product.
Preferably, as shown in fig. 1, the bottom of the housing is provided with a fixing hole 7.
Preferably, a temperature sensor for measuring the temperature of the transformer is further included.
Specifically, the temperature sensor can measure the temperature, so that real-time observation can be carried out, and the temperature of the transformer is ensured to be within a safety range.
As shown in fig. 1, a temperature sensor inlet 6 is provided on the housing.
Preferably, the temperature sensor is a thermocouple.
According to the transformer water cooling device provided by the invention, the transformer is a litz wire winding, the size of the shell is designed according to the size of the transformer, and the width of the winding outlet is designed. Considering that the transformer loss is great, six-side heat dissipation is adopted, the water-cooled tubes in the shell and the cover plate are designed and arranged, and the water outlet and the water inlet are designed on the same side of the shell. The transformer is placed in the water cooling device shell, the cover plate is covered, and pouring sealant is poured into the transformer through the pouring sealant pouring opening to fix the transformer and play roles in heat dissipation and heat conduction. And finally, fixing the whole device.
The water quantity required by the water cooling device can be calculated according to the following formula through the heat dissipation quantity:
Q＝c·m·Δt，P＝c·l·Δt；
wherein Q is heat dissipation capacity, P is heat dissipation power, c is specific heat capacity of water, m is cooling water mass, delta t is water-cooling inlet and outlet water temperature difference, and l is cooling water flow.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The utility model provides a transformer water cooling plant which characterized in that includes: a shell and a water-cooled tube;
the shell is provided with an upper opening and a lower opening and is placed on the water-cooling plate, and the transformer is placed in a cavity formed by the shell and the water-cooling plate;
the water cooling pipes are arranged inside each wall surface of the shell.
2. The transformer water cooling device of claim 1, wherein the housing is provided with an outlet hole and an inlet hole of the transformer winding, both of which are inclined downwards.
3. The transformer water cooling device of claim 2, wherein the wire outlet hole and the wire inlet hole are arranged on two sides of the shell.
4. The transformer water cooling device as claimed in claim 2 or 3, wherein the angle of downward inclination of the outlet hole and the inlet hole is greater than or equal to the angle of inclination of the outgoing line of the transformer winding.
5. The transformer water cooling device of claim 1, further comprising a cover plate which is detachable and in which the water cooling pipes are arranged.
6. The transformer water cooling device of claim 1, wherein a gap between the cavity and the transformer is filled with a potting adhesive.
7. The transformer water cooling device as claimed in claim 6, wherein the housing is provided with a pouring sealant injection hole.
8. The transformer water cooling device according to claim 1, wherein the housing is provided with a cooling water inlet and a cooling water outlet.
9. The transformer water cooling device according to claim 1, wherein a fixing hole is formed in the bottom of the housing.
10. The transformer water cooling apparatus of claim 1, further comprising a temperature sensor for measuring a temperature of the transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111188412.9A CN113972051A (en) | 2021-10-12 | 2021-10-12 | Water cooling device for transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111188412.9A CN113972051A (en) | 2021-10-12 | 2021-10-12 | Water cooling device for transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113972051A true CN113972051A (en) | 2022-01-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111188412.9A Pending CN113972051A (en) | 2021-10-12 | 2021-10-12 | Water cooling device for transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113972051A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111865246A (en) * | 2019-04-25 | 2020-10-30 | 波音公司 | Self-contained cooling device for electromagnetic interference filter |
-
2021
- 2021-10-12 CN CN202111188412.9A patent/CN113972051A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111865246A (en) * | 2019-04-25 | 2020-10-30 | 波音公司 | Self-contained cooling device for electromagnetic interference filter |
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