Connecting structure of water circulation cooling device for dry-type transformer

Abstract

The utility model discloses a water circulation cooling device connecting structure for a dry-type transformer and relates to the field of cooling devices. A cooling water circulating device is arranged on the side of the dry-type transformer, a water outlet pipe and a water return pipe are communicated with a cooling water pipe through an installation assembly, and the cooling water pipe is arranged outside the dry-type transformer in a winding mode. The mounting assembly comprises threads II which are pre-arranged at a water inlet port and a water outlet port of the cooling water pipe, and the threaded sleeve is in threaded connection with threads I reserved on the outer walls of the hard pipes in the water outlet pipe and the water return pipe. Cooling water circulates through a cooling water pipe wound outside the dry-type transformer to cool the dry-type transformer, the threaded sleeve is twisted, the position of the threaded sleeve in threaded connection with the first thread and the second thread moves synchronously during rotation, and when the threaded sleeve is twisted and displaced and is not in threaded connection with the second thread, the dry-type transformer is cooled. Therefore, the water inlet port and the water outlet port of the cooling water pipe can be separated from the water outlet pipe and the water return pipe, and the water tank is convenient to disassemble and assemble.

Description

Technical Field

[0001] This utility model relates to the field of cooling devices, specifically to a connection structure for a water circulation cooling device for dry-type transformers. Background Technology

[0002] Transformers play a vital role in the power transmission and distribution process of power systems, and are also a basic component for the normal operation of many electronic devices. Heat generation is a common phenomenon in dry-type transformers during operation. Water cooling can improve the cooling efficiency of dry-type transformers and ensure that the transformer can operate stably in a low-temperature and safe environment.

[0003] Water circulation cooling systems remove the heat generated during transformer operation by flowing water. However, existing dry-type transformer water cooling devices still have some problems in use: In the current water cooling devices, the connection between the cooling water pipe and the cooling water circulation device is mostly done by flanges and screws. This means that subsequent maintenance of the cooling water circulation device requires turning many screws to disassemble and assemble the water tank, which is inconvenient.

[0004] Therefore, it is necessary to invent a connection structure for the connecting pipe joint of a water circulation cooling device for dry transformers to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a water circulation cooling device for dry-type transformers, in order to solve the problem mentioned in the background art that the existing water cooling devices use flanges and screws to connect the cooling water pipes and the cooling water circulation device, which means that the cooling water circulation device needs to be disassembled and reassembled by turning many screws during subsequent maintenance of the water tank, which is inconvenient.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a water circulation cooling device for a dry-type transformer, comprising a dry-type transformer, a base installed at the bottom of the dry-type transformer, a cooling water circulation device arranged beside the dry-type transformer, the inlet of the cooling water circulation device being connected to a return pipe, and the outlet of the cooling water circulation device being connected to an outlet pipe; the outlet pipe and the return pipe are connected to the cooling water pipe through an installation assembly, a sealing assembly is provided at the connection between the outlet pipe and the return pipe and the cooling water pipe, and the cooling water pipe is coiled around the outside of the dry-type transformer;

[0007] The installation component includes a second thread pre-installed at the inlet and outlet ports of the cooling water pipe, and the second thread is threadedly connected to the threaded sleeve. The threaded sleeve is also threadedly connected to the first thread pre-installed on the outer wall of the rigid pipe in the outlet and return pipe, which facilitates the connection between the inlet and outlet ports of the cooling water pipe and the outlet and return pipes.

[0008] Preferably, the cooling water circulation device includes a water tank, a water pump, and a heat exchange device for exchanging heat with the circulating water in the water tank; the water tank inlet is connected to a return water pipe, and the water tank outlet is connected to an outlet water pipe via the water pump. A water inlet and a water outlet may be provided on the water tank.

[0009] Preferably, both the outlet pipe and the return pipe are composed of a flexible metal hose and a rigid PVC pipe fixedly connected to the end of the flexible metal hose. The flexible metal hose is connected to the cooling water circulation device, and the rigid PVC pipe is connected to the cooling water pipe through an installation assembly. In this way, the cooling water inside the water tank circulates through the cooling water pipe to cool the dry-type transformer.

[0010] Preferably, the inlet and outlet ports of the cooling water pipe are on the same side, and the inlet and outlet ports of the cooling water pipe are staggered vertically.

[0011] Preferably, the sealing assembly includes a sealing ring one that is fixedly connected to the inlet and outlet ports of the cooling water pipe, and the sealing ring one matches the sealing groove reserved inside the sealing ring two. The sealing ring two is fixedly connected to the end of the PVC rigid pipe in the outlet and return water pipes to ensure the sealing of the connection between the inlet and outlet ports of the cooling water pipes and the outlet and return water pipes.

[0012] Preferably, sealing ring one and sealing ring two are connected to the PVC rigid pipe ports in the outlet pipe and return pipe using PVC pipe-specific adhesive.

[0013] Preferably, the installation assembly further includes an annular groove reserved inside the threaded sleeve, and an annular block is slidably installed inside the annular groove. A square block is fixedly connected to the inner wall of the annular block. At the same time, the square block is slidably connected to the strip groove reserved inside the rigid pipe in the water outlet pipe and the water return pipe, so as to ensure that the threaded sleeve is not disengaged from the rigid pipe in the water outlet pipe and the water return pipe.

[0014] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0015] 1. The cooling water inside the cooling water circulation device circulates through cooling water pipes coiled around the outside of the dry-type transformer to cool it down. The threaded sleeve, connected to threads one and two, moves synchronously with each other during rotation. When the threaded sleeve's torsional displacement disengages from thread two, the inlet and outlet ports of the cooling water pipes can be separated from the outlet and return pipes, facilitating the disassembly and assembly of the cooling water circulation device.

[0016] 2. At the same time, when the threaded sleeve moves in the position caused by the torsion, the annular block and the square block fixedly connected to the inner wall of the annular block move inside the strip groove. When the square block abuts against the two closed ends of the strip groove, the threaded sleeve no longer has room to move. This prevents the threaded sleeve from falling off the outlet pipe and return pipe, facilitating subsequent connection operations. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a perspective view of the overall structure of this utility model;

[0019] Figure 2 This is a perspective view of the connection structure between the cooling water pipe and the cooling water circulation device of this utility model;

[0020] Figure 3 This is an exploded view of the connection structure of the mounting components of this utility model;

[0021] Figure 4 This is an exploded view of the connection structure between the threaded sleeve (partially cut out) and the mounting assembly of this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Dry-type transformer; 2. Base; 3. Cooling water circulation device; 4. Outlet pipe; 5. Return pipe; 6. Cooling water pipe; 7. Sealing assembly; 701. Sealing ring one; 702. Sealing ring two; 703. Sealing groove; 8. Mounting assembly; 801. Thread one; 802. Thread two; 803. Threaded sleeve; 804. Annular groove; 805. Annular block; 806. Square block; 807. Strip groove. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0025] This utility model provides, for example Figure 1-4The dry-type transformer water circulation cooling device shown includes a dry-type transformer 1, a base 2 installed at the bottom of the dry-type transformer 1, a cooling water circulation device 3 arranged on the side of the dry-type transformer 1, the inlet of the cooling water circulation device 3 being connected to the return water pipe 5, and the outlet of the cooling water circulation device 3 being connected to the outlet water pipe 4; the outlet water pipe 4 and the return water pipe 5 are connected to the cooling water pipe 6 through the mounting assembly 8, and a sealing assembly 7 is provided at the connection between the outlet water pipe 4 and the return water pipe 5 and the cooling water pipe 6, and the cooling water pipe 6 is coiled around the outside of the dry-type transformer 1.

[0026] During use, the cooling water inside the cooling water circulation device 3 circulates through the cooling water pipe 6 coiled around the outside of the dry-type transformer 1 to cool the dry-type transformer 1.

[0027] The cooling water circulation device 3 may include a water tank, a water pump, and a heat exchanger for exchanging heat with the circulating water in the water tank. The water tank inlet can be connected to the return water pipe 5, and the water tank outlet can be connected to the outlet water pipe 4 via the water pump. A water inlet and a water outlet may be provided on the water tank. The heat exchanger and its connection structure to the water tank are existing devices and connection structures, such as plate heat exchangers. The heat exchanger cools the circulating water inside the water tank, and the water pump ensures the circulation of the cooling water, guaranteeing the water cooling effect.

[0028] Both the outlet pipe 4 and the return pipe 5 are composed of a flexible metal hose and a rigid PVC pipe fixedly connected to the end of the flexible metal hose. The flexible metal hose is connected to the cooling water circulation device 3, and the rigid pipe is connected to the cooling water pipe 6 through the mounting assembly 8. The inlet and outlet ports of the cooling water pipe 6 are on the same side, and the inlet and outlet ports of the cooling water pipe 6 are staggered vertically. In this way, the cooling water inside the cooling water circulation device 3 circulates through the cooling water pipe 6 to cool the dry-type transformer 1. The flexible metal hose has flexibility, so that the installation distance error between the outlet pipe 4 and the return pipe 5 and the cooling water pipe 6 will not affect the subsequent water circulation.

[0029] The sealing assembly 7 includes a sealing ring 701 that is fixedly connected to the inlet and outlet ports of the cooling water pipe 6. The sealing ring 701 matches the pre-drilled sealing groove 703 inside the sealing ring 702. The sealing ring 702 is also fixedly connected to the ends of the PVC rigid pipes in the outlet pipe 4 and return pipe 5, ensuring a tight seal between the inlet and outlet ports of the cooling water pipe 6 and the outlet pipe 4 and return pipe 5. The sealing rings 701 and 702 can be connected to the PVC rigid pipe ports of the outlet pipe 4 and return pipe 5 using PVC pipe adhesive.

[0030] The mounting component 8 includes a second thread 802 pre-installed at the inlet and outlet ports of the cooling water pipe 6, and the second thread 802 is threadedly connected to the threaded sleeve 803. The threaded sleeve 803 is also threadedly connected to the first thread 801 pre-installed on the outer wall of the rigid pipe in the outlet pipe 4 and the return pipe 5, which facilitates the connection between the inlet and outlet ports of the cooling water pipe 6 and the outlet pipe 4 and the return pipe 5.

[0031] When connecting the outlet pipe 4 and return pipe 5 to the cooling water pipe 6, firstly, insert the pre-reserved sealing groove 703 inside the sealing ring 702, which is fixedly connected to the ends of the outlet pipe 4 and return pipe 5, into the sealing ring 701. Both the outlet pipe 4 and return pipe 5 are fitted with flexible metal hoses, which are flexible and extendable, making the connection between the outlet pipe 4, return pipe 5, and cooling water pipe 6 relatively convenient. Subsequently, rotating the threaded sleeve 803 causes it to rotate and shift, achieving a threaded connection with the pre-reserved thread 802 on the outer ring of the cooling water pipe 6, thus completing the connection and installation of the outlet pipe 4, return pipe 5, and cooling water pipe 6. Simultaneously, rotating the threaded sleeve 803 and tightening the threaded sleeve 802 causes the sealing ring 702 connected to the outlet pipe 4 and return pipe 5 to continuously move and press tightly against the sealing ring 701, thereby ensuring the sealing of the connection between the outlet pipe 4, return pipe 5, and cooling water pipe 6. You can wrap raw rubber tape around 802.

[0032] The mounting assembly 8 also includes an annular groove 804 pre-reserved inside the threaded sleeve 803, and an annular block 805 is slidably installed inside the annular groove 804. A square block 806 is fixedly connected to the inner wall of the annular block 805. Simultaneously, the square block 806 is slidably connected to a strip groove 807 pre-reserved inside the rigid pipes of the outlet pipe 4 and the return pipe 5, ensuring that the threaded sleeve 803 remains installed in conjunction with the rigid pipes of the outlet pipe 4 and the return pipe 5. The strip groove 807 is relatively narrow and does not affect the threaded connection between the threaded thread 801 and the threaded sleeve 803.

[0033] When in use, the threaded sleeve 803 is twisted. The threaded sleeve 803, which is threaded to thread 801 and thread 802, moves synchronously during rotation. When the threaded sleeve 803 is twisted and its position changes, it is no longer threaded to thread 802. This allows the inlet and outlet ports of the cooling water pipe 6 to be separated from the outlet pipe 4 and return pipe 5, facilitating the disassembly and assembly of the cooling water circulation device 3. At the same time, when the threaded sleeve 803 is twisted, the annular block 805, which is rotatably connected to the threaded sleeve 803, will not affect the rotation of the threaded sleeve 803.

[0034] At the same time, when the threaded sleeve 803 moves to the position of the torsion, the annular block 805 and the square block 806 fixedly connected to the inner wall of the annular block 805 move inside the strip groove 807. When the square block 806 abuts against the two closed ends of the strip groove 807, the threaded sleeve 803 no longer has room to move, thus preventing the threaded sleeve 803 from falling off the outlet pipe 4 and the return pipe 5.

[0035] Multiple parts can be connected and installed by welding or bonding separate components and then assembling them. Alternatively, they can be connected and installed using fasteners or elastic components. For example, block 806 can be connected to ring block 805 with screws. Ring block 805 can be a flexible open ring.

[0036] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A connection structure for a water circulation cooling device of a dry-type transformer, comprising a dry-type transformer (1), characterized in that, The dry-type transformer (1) is equipped with a base (2) at its bottom. A cooling water circulation device (3) is provided on the side of the dry-type transformer (1). The inlet of the cooling water circulation device (3) is connected to the return water pipe (5), and the outlet of the cooling water circulation device (3) is connected to the outlet water pipe (4). The outlet water pipe (4) and the return water pipe (5) are connected to the cooling water pipe (6) through the mounting assembly (8). A sealing assembly (7) is provided at the connection between the outlet water pipe (4) and the return water pipe (5) and the cooling water pipe (6). The cooling water pipe (6) is coiled around the outside of the dry-type transformer (1). The installation component (8) includes a second thread (802) pre-set at the inlet and outlet ports of the cooling water pipe (6), and the second thread (802) is threadedly connected to the threaded sleeve (803), and the threaded sleeve (803) is threadedly connected to the first thread (801) reserved on the outer wall of the hard pipe in the outlet pipe (4) and the return pipe (5).

2. The connection structure of the water circulation cooling device for a dry-type transformer according to claim 1, characterized in that, The outlet pipe (4) and return pipe (5) are both composed of a metal hose and a PVC rigid pipe fixedly connected to the end of the metal hose. The metal hose is connected to the cooling water circulation device (3), and the PVC rigid pipe is connected to the cooling water pipe (6) through the mounting assembly (8).

3. The connection structure of the water circulation cooling device for a dry-type transformer according to claim 1, characterized in that, The inlet and outlet ports of the cooling water pipe (6) are on the same side, and the inlet and outlet ports of the cooling water pipe (6) are staggered vertically.

4. The connection structure of the water circulation cooling device for a dry-type transformer according to claim 1, characterized in that, The sealing assembly (7) includes a sealing ring one (701) fixedly connected to the inlet and outlet ports of the cooling water pipe (6), and the sealing ring one (701) matches the sealing groove (703) reserved inside the sealing ring two (702), and the sealing ring two (702) is fixedly connected to the end of the PVC rigid pipe in the outlet pipe (4) and the return pipe (5).

5. The connection structure of the water circulation cooling device for a dry-type transformer according to claim 1, characterized in that, The mounting assembly (8) also includes an annular groove (804) reserved inside the threaded sleeve (803), and an annular block (805) is slidably installed inside the annular groove (804). A square block (806) is fixedly connected to the inner wall of the annular block (805), and the square block (806) is slidably connected to the strip groove (807) reserved inside the hard pipe in the outlet pipe (4) and the return pipe (5).

6. The connection structure of the water circulation cooling device for a dry-type transformer according to claim 1, characterized in that, The cooling water circulation device includes a water tank, a water pump, and a heat exchange device for exchanging heat with the circulating water in the water tank; the water tank inlet is connected to the return water pipe (5), and the water tank outlet is connected to the outlet water pipe (4) through the water pump; the water tank is provided with a water inlet and a water outlet.

7. The connection structure of the water circulation cooling device for a dry-type transformer according to claim 4, characterized in that, The sealing ring one (701) and sealing ring two (702) are connected to the PVC rigid pipe ports in the outlet pipe (4) and return pipe (5) by special PVC pipe glue.

Images