A transformer cooler flushing device and installation method

Abstract

The present invention relates to a transformer cooler flushing device and an installation method, including a frame body. An operation platform is provided inside the upper part of the frame body, and a ladder is provided inside the lower part. One side of the frame body is the access side, and the other sides are installation sides. An operator enters from the access side and climbs the ladder. The cooler is vertically installed on the corresponding installation side of the frame body. A handling arm is provided outside the frame body. Handling seats are provided on both sides of the cooler, and the handling seats are installed on the corresponding handling arms. An oil inlet is provided on the lower side of the cooler, and an oil outlet is provided on the upper side. The oil inlet and the oil outlet are connected to the transformer oil circuit. By vertically arranging the cooler, the present invention ensures that the transformer oil fills the inside of the cooler from bottom to top, and coolers can be vertically installed on each installation side of the frame body, so that more coolers can be arranged in a production site with a smaller area.

Description

Technical Field

[0001] The present invention relates to the field of transformer manufacturing, and more particularly to a transformer cooler flushing device and an installation method thereof. Background Art

[0002] Large transformers are equipped with cooling devices as an essential component. Generally, coolers are purchased by transformer manufacturers as component parts and installed on the transformer main body after arriving at the factory. Their working principle is to use an oil pump to send the hot oil from the upper part of the transformer oil tank into the cooler, allowing it to flow through the cooling pipes and then be returned to the oil tank from the lower part of the transformer. That is to say, the cooling pipes inside the cooler are connected to the inside of the transformer main body. However, the cleanliness of the internal pipelines of the cooler is very important. It is necessary to avoid generating gases or impurities harmful to the transformer main body oil inside it, that is, to avoid contaminating the transformer main body oil sample. Currently, transformer manufacturers mostly use the method of flushing the cooler to solve the above problems, and the flushing quality will directly affect the test data of transformer products. The traditional flushing method is to place the cooler flat on the ground, with one end lifted by 10-20°, and then connect the transformer oil pipelines at both ends for flushing. However, it is very difficult to ensure that 100% of the inside of the cooler is flushed in this way. Moreover, due to the large volume of the cooler, the inclined flat placement occupies a large area. And to discharge impurities and gases in the cooler, generally, it is necessary to ensure that the transformer oil stays in the cooler for a certain period of time, which will result in the long-term occupation of the production site. Summary of the Invention

[0003] The purpose of the present invention is to provide a transformer cooler flushing device and an installation method thereof, which ensure that the transformer oil fills the inside of the cooler from bottom to top by vertically arranging the cooler, and the cooler can be vertically installed on each installation side of the frame, so that more coolers can be arranged in a production site with a smaller area.

[0004] The purpose of the present invention is achieved by the following technical solutions:

[0005] A transformer cooler flushing device includes a frame. An operation platform is arranged inside the upper part of the frame, and a ladder is arranged inside the lower part. One side of the frame is the access side, and the other sides are installation sides. The operator enters through the access side and climbs the ladder. The cooler is vertically installed on the corresponding installation side of the frame. A handling arm is arranged outside the frame. Handling seats are arranged on both sides of the cooler, and the handling seats are installed on the corresponding handling arms. An oil inlet is arranged on the lower side of the cooler, and an oil outlet is arranged on the upper side. The oil inlet and the oil outlet are connected to the transformer oil circuit.

[0006] The frame includes frame columns, a top beam, and a bottom beam. The two ends of the top beam are respectively fixedly connected to the upper ends of the corresponding frame columns, and the two ends of the bottom beam are respectively fixedly connected to the lower ends of the corresponding frame columns.

[0007] The frame columns include a first column and a second column. The upper end of the first column is connected to the corresponding top beam, and the lower end of the second column is connected to the corresponding bottom beam. The lower end of the first column is inserted into the corresponding second column and fixedly connected to the corresponding second column through an adjustment bolt. A set of first adjustment mounting holes for inserting the adjustment bolt is provided at the lower part of the first column, and a set of second adjustment mounting holes for inserting the adjustment bolt is provided at the upper part of the second column.

[0008] A regulating plate is provided inside the frame body on the lower side of the lowest operating platform, and a plurality of regulating holes are provided on the regulating plate. The lower end of the ladder is hinged to the corresponding bottom beam, and the upper end of the ladder is fixedly installed in the corresponding regulating hole. A side beam is provided in the middle of the frame body. When adjusting the height of the frame body, the upper end of the ladder is removed and leaned against the side beam.

[0009] The gripping arm is installed on the first column of the frame column. An installation support rod is provided on the first column. The gripping arm is sleeved on the installation support rod. The front end of the installation support rod is fixedly connected to the upper end of a support rod, and the lower end of the support rod is fixedly connected to the first column. A chute is provided on the lower side of the gripping arm, and the upper end of the support rod is arranged in the chute. A gripping hole for connecting with the gripping seat is provided on the gripping arm, and fastening holes for fixedly connecting with the installation support rod are provided on both sides of the gripping arm.

[0010] The lower end of the frame column is provided with feet.

[0011] A first operating platform and a second operating platform are provided inside the upper part of the frame body, and the first operating platform is located on the upper side of the second operating platform. Openings for operators to enter and exit are provided on both the first operating platform and the second operating platform.

[0012] An installation method of the transformer cooler flushing device according to the above, characterized in that it includes the following steps:

[0013] Step 1: Remove the upper end of the ladder from the regulating plate and lean it against the side beam. Then, adjust the height of the frame body according to the cooler specifications. After the height of the frame body is determined, fix the upper end of the ladder in the corresponding regulating hole on the regulating plate.

[0014] Step 2: Use a crane to lift the cooler to the corresponding installation side of the frame body.

[0015] Step 3: Adjust the length of the gripping arm according to the cooler specifications.

[0016] Step 4: Fix the gripping seat on the cooler to the corresponding gripping arm.

[0017] Step 5: Connect the cooler to the transformer oil circuit.

[0018] The advantages and positive effects of the present invention are:

[0019] 1. The cooler of the present invention is vertically arranged, which can ensure that the transformer oil fills the inside of the cooler from bottom to top, achieving 100% cleaning.

[0020] 2. The coolers can be vertically installed on each installation side of the frame of the present invention, so that more coolers can be arranged in a production site with a smaller area, greatly reducing the long-term occupation of the production site.

[0021] 3. The height of the frame, the angle of the ladder, and the length of the handling arm of the present invention can all be adjusted according to the cooler specifications, making it more convenient and flexible to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 FIG. is a schematic diagram of the usage state of the present invention.

[0023] Figure 2 FIG. is a schematic structural diagram of the present invention.

[0024] Figure 3 is Figure 2 a schematic structural diagram of part A in

[0025] Figure 4 is Figure 1 a schematic diagram of the fixation of the upper end of the ladder in

[0026] Figure 5 FIG. is a schematic diagram of the connection between the cooler and the oil system when the present invention is in use.

[0027] Among them, 1 is the frame, 101 is the ladder, 102 is the first operation platform, 103 is the second operation platform, 104 is the handling arm, 1041 is the limit plate, 1042 is the sliding groove, 1043 is the handling hole, 1044 is the installation support rod, 105 is the support rod, 106 is the support foot, 107 is the frame column, 1071 is the first column, 1072 is the second column, 108 is the adjustment plate, 109 is the adjustment hole, 2 is the cooler, 201 is the oil outlet, 202 is the oil inlet, 203 is the handling seat, and 204 is the lifting lug. DETAILED DESCRIPTION OF THE INVENTION

[0028] The present invention will be further described in detail below with reference to the drawings.

[0029] As shown in Figures 1 to 5As shown in the figure, the present invention includes a frame body 1. An operation platform is provided inside the upper part of the frame body 1, and a ladder 101 is provided inside the lower part. One side of the frame body 1 is the access side, and the other sides are installation sides. An operator enters through the access side and climbs the ladder 101. The cooler 2 is vertically installed on the corresponding installation side of the frame body 1. A handling arm 104 is provided outside the frame body 1. Handling seats 203 are provided on both sides of the cooler 2, and the handling seats 203 are installed on the corresponding handling arms 104. An oil inlet 202 is provided on the lower side of the cooler 2, and an oil outlet 201 is provided on the upper side. The oil inlet 202 and the oil outlet 201 are connected to the transformer oil circuit. The transformer oil for cleaning enters the cooler 2 from the lower oil inlet 202, gradually rises, and finally flows out from the oil outlet 201. In the present invention, the cooler 2 is vertically arranged. On the one hand, it can ensure that the transformer oil fills the inside of the cooler 2 from bottom to top, achieving 100% cleaning. On the other hand, the cooler 2 can be vertically installed on each installation side of the frame body 1, so that more coolers can be arranged in a production site with a smaller area, greatly reducing the long-term occupation of the production site.

[0030] As Figures 1 to 5 shown, the frame body 1 includes frame body columns 107, a top beam and a bottom beam. The two ends of the top beam are respectively fixedly connected to the upper ends of the corresponding frame body columns 107, and the two ends of the bottom beam are respectively fixedly connected to the lower ends of the corresponding frame body columns 107. Support feet 106 are provided at the lower ends of the frame body columns 107 to ensure the stable support of the entire frame body 1. The handling arm 104 is installed on the corresponding frame body column 107.

[0031] The frame body column 107 can adopt a telescopic structure, so that the height of the frame body 1 can be adjusted according to the specifications of the cooler 2. As Figure 2 shown, in this embodiment, the frame body column 107 includes a first column 1071 and a second column 1072. The upper end of the first column 1071 is connected to the corresponding top beam, and the lower end of the second column 1072 is connected to the corresponding bottom beam. The lower end of the first column 1071 is inserted into the corresponding second column 1072 and fixedly connected to the corresponding second column 1072 through an adjustment bolt. A set of first adjustment installation holes are provided in the lower part of the first column 1071, and a set of second adjustment installation holes are provided in the upper part of the second column 1072. After removing the adjustment bolt, the first column 1071 can move up and down, so as to achieve the purpose of adjusting the height of the frame body 1. When the height of the frame body 1 is determined, the adjustment bolt passes through a corresponding second adjustment installation hole and is threadedly fixed in the corresponding first adjustment installation hole, so as to realize the fixed connection between the first column 1071 and the second column 1072.

[0032] Since the height of the frame 1 is adjustable, in order to ensure that the operator can climb along the ladder 101 to the lowest operating platform, the angle of the ladder 101 is adjustable, so as to ensure that the distance between the upper end of the ladder 101 and the lowest operating platform can allow the operator to enter. As Figure 4 shown, in this embodiment, an adjusting plate 108 is provided in the frame 1 under the lowest operating platform. A plurality of adjusting holes 109 are arranged in an arc (or other arrangement) on the adjusting plate 108. The lower end of the ladder 101 is hinged to the corresponding bottom beam, and the upper end of the ladder 101 is installed in the corresponding adjusting hole 109 through a fixing bolt. A side beam is provided in the middle of the frame 1. When adjusting the height of the frame 1, first remove the fixing bolt, lean the upper end of the ladder 101 against the side beam, and then adjust the first column 1071 to adjust the height of the frame 1. After the height of the frame 1 is determined and the first column 1071 is fixed, then install the upper end of the ladder 101 in the corresponding adjusting hole 109 on the adjusting plate 108 through a fixing bolt.

[0033] As Figures 2 to 3 shown, the handling arm 104 can also adopt a telescopic structure to meet the installation requirements of coolers 2 of different specifications. The handling arm 104 is installed on the first column 1071 of the frame column 107. As Figure 3 shown, an installation support rod 1044 is provided on the first column 1071. The handling arm 104 is sleeved on the installation support rod 1044 and can slide along the installation support rod 1044. The front end of the installation support rod 1044 is fixedly connected to the upper end of a support rod 105, and the lower end of the support rod 105 is fixedly connected to the first column 1071, thus forming a triangular support structure to ensure stable support. A chute 1042 is provided on the lower side of the handling arm 104, and the upper end of the support rod 105 is arranged in the chute 1042, so as not to affect the movement of the handling arm 104. A handling hole 1043 is provided on the handling arm 104 for connecting with the handling seat 203 of the cooler 2. Fastening holes are provided on both sides of the handling arm 104. When the position of the handling arm 104 is determined, the handling arm 104 is fixedly connected to the installation support rod 1044 through a fastening bolt passing through the fastening hole to achieve positioning. A limiting plate 1041 is provided at the free end of the handling arm 104 to limit the displacement of the handling seat 203 of the cooler 2.

[0034] As Figure 2 shown, in this embodiment, a first operating platform 102 and a second operating platform 103 are provided inside the upper part of the frame 1, and the first operating platform 102 is located above the second operating platform 103. The adjusting plate 108 is located under the second operating platform 103. Openings are provided on both the first operating platform 102 and the second operating platform 103 for the operator to enter and exit. The operator can place the installation tools on the operating platform at the corresponding height to facilitate the installation of the oil circuit.

[0035] The working principle of the present invention is as follows:

[0036] As Figure 5 shown, the transformer oil circuit includes an oil system and a oil filter. The oil outlet end of the oil system is connected to the oil inlet end of the oil filter through a pipeline. The oil outlet end of the oil filter is connected to the oil inlet 202 of the cooler 2 through a pipeline. The oil outlet 201 of the cooler 2 is connected to the oil inlet end of the oil system through a pipeline, thus forming a circulation loop. During cleaning, the oil filter pumps the transformer oil into the cooler 2, and after passing through the cooler 2, the impurities, moisture, etc. inside the transformer oil are carried out and flow into the oil tank of the oil system. The transformer oil output by the oil system is filtered by the filter element of the oil filter and then becomes clean transformer oil again and continues to flow into the cooler. This cycle is repeated, thereby realizing the cleaning inside the cooler. Both the oil system and the oil filter are well-known technologies in the art and are commercially available products.

[0037] The frame 1 of the present invention can be adjusted according to the specifications of the cooler 2. The installation method of the present invention includes the following steps:

[0038] Step 1: Remove the upper end of the ladder 101 from the adjusting plate 108, and then adjust the height of the frame 1 by adjusting the height of the first upright 1071 according to the specifications of the cooler 2. After the height of the frame 1 is determined, fix the upper end of the ladder 101 back into the corresponding adjustment hole 109 on the adjusting plate 108.

[0039] Step 2: Use a crane to lift the cooler 2 to the corresponding installation side of the frame 1. As Figure 1 shown, the upper end of the cooler 2 is provided with a lifting lug 204 for lifting. At this time, a certain space needs to be left between the cooler 2 and the frame 1 to facilitate the adjustment of the mounting arm 104.

[0040] Step 3: Adjust the length of the mounting arm 104 according to the specifications of the cooler 2.

[0041] Step 4: Fix the mounting seat 203 on the cooler 2 to the corresponding mounting arm 104 through bolts.

[0042] Step 5: Connect the cooler 2 to the transformer oil circuit. First, the operator connects the oil inlet 202 at the lower side of the cooler 2 to the oil outlet end of the oil filter. Then, the operator enters from the access side of the frame 1 and climbs the ladder 101 to a suitable operating platform, connects the oil outlet 202 at the upper side of the cooler 2 to the corresponding pipeline. Finally, the operator moves out of the frame and connects the pipeline connected to the oil outlet 202 to the oil inlet end of the oil system.

Claims

1. A transformer cooler flushing device, characterized in that: It includes a frame body (1). An operation platform is provided inside the upper part of the frame body (1), and a ladder (101) is provided inside the lower part. One side of the frame body (1) is the access side, and the other sides are installation sides. Cooling devices can be vertically installed on each installation side of the frame body. An operator enters from the access side and climbs the ladder (101). The cooling device (2) is vertically installed on the corresponding installation side of the frame body (1). A handling arm (104) is provided outside the frame body (1). Handling seats (203) are provided on both sides of the cooling device (2), and the handling seats (203) are installed on the corresponding handling arms (104). An oil inlet (202) is provided on the lower side of the cooling device (2), and an oil outlet (201) is provided on the upper side. The oil inlet (202) and the oil outlet (201) are connected to the transformer oil circuit; The frame body (1) includes frame body columns (107), a top beam and a bottom beam. The two ends of the top beam are respectively fixedly connected to the upper ends of the corresponding frame body columns (107), and the two ends of the bottom beam are respectively fixedly connected to the lower ends of the corresponding frame body columns (107); The frame body column (107) includes a first column (1071) and a second column (1072). The upper end of the first column (1071) is connected to the corresponding top beam, and the lower end of the second column (1072) is connected to the corresponding bottom beam. The lower end of the first column (1071) is inserted into the corresponding second column (1072) and fixedly connected to the corresponding second column (1072) through an adjustment bolt. A set of first adjustment mounting holes for the adjustment bolt to insert is provided in the lower part of the first column (1071), and a set of second adjustment mounting holes for the adjustment bolt to insert is provided in the upper part of the second column (1072); The handling arm (104) is installed on the first column (1071) of the frame body column (107). An installation support rod (1044) is provided on the first column (1071). The handling arm (104) is sleeved on the installation support rod (1044). The front end of the installation support rod (1044) is fixedly connected to the upper end of a support rod (105). The lower end of the support rod (105) is fixedly connected to the first column (1071). A chute (1042) is provided on the lower side of the handling arm (104), and the upper end of the support rod (105) is arranged in the chute (1042). A handling hole (1043) for connecting with the handling seat (203) is provided on the handling arm (104). Fastening holes for fixedly connecting with the installation support rod (1044) are provided on both sides of the handling arm (104).

2. The transformer cooler flushing device according to claim 1, wherein: An adjusting plate (108) is provided inside the frame body (1) under the lower - most operation platform. A plurality of adjusting holes (109) are provided on the adjusting plate (108). The lower end of the ladder (101) is hinged to the corresponding bottom beam, and the upper end of the ladder (101) is fixedly installed in the corresponding adjusting hole (109). A side beam is provided in the middle of the frame body (1). When adjusting the height of the frame body (1), the upper end of the ladder (101) is removed and leaned against the side beam.

3. The transformer cooler flushing device according to claim 1, characterized in that: The lower end of the frame body column (107) is provided with a support foot (106).

4. The transformer cooler flushing device according to claim 1, characterized in that: The upper part of the frame body (1) is internally provided with a first operation platform (102) and a second operation platform (103), and the first operation platform (102) is located on the upper side of the second operation platform (103). Openings for operators to enter and exit are provided on both the first operation platform (102) and the second operation platform (103).

5. An installation method of the transformer cooler flushing device according to claim 2, characterized in that: It includes the following steps: Step 1: Remove the upper end of the ladder (101) from the adjusting plate (108) and lean it against the side beam. Then, adjust the height of the frame body (1) according to the specifications of the cooler (2). After the height of the frame body (1) is determined, fix the upper end of the ladder (101) in the corresponding adjusting hole (109) on the adjusting plate (108). Step 2: Use a crane to lift and transport the cooler (2) to the corresponding installation side of the frame body (1). Step 3: Adjust the length of the gripping arm (104) according to the specifications of the cooler (2). Step 4: Fix the gripping seat (203) on the cooler (2) to the corresponding gripping arm (104). Step 5: Connect the cooler (2) to the transformer oil circuit.

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