Cushion block with outer insulating cylinder convenient to disassemble and assemble and dry-type transformer

Abstract

The cushion block comprises a cushion block body and a limiting block, the cushion block body is provided with a high-voltage coil abutting portion and a low-voltage coil abutting portion, the cushion block body is provided with an installation portion, the installation portion is located on the side, away from the low-voltage coil abutting portion, of the high-voltage coil abutting portion, and the limiting block is located on the side, away from the low-voltage coil abutting portion, of the high-voltage coil abutting portion. The limiting block is detachably installed on the installation part, the limiting block and the high-voltage coil abutting part are arranged in a spaced mode, and the limiting block, the installation part and the high-voltage coil abutting part define a positioning groove used for positioning the outer insulating cylinder. According to the cushion block provided by the utility model, the half cylinder piece of the outer insulating cylinder of the dry-type transformer can be easier and more convenient to disassemble, assemble and maintain.

Description

Technical Field

[0001] The utility model relates to a dry-type transformer, in particular to a pad which is convenient for disassembling and assembling an outer insulating cylinder and a dry-type transformer. Background Art

[0002] In order to adapt to the harsh climate environment at sea, offshore wind power dry-type transformers need to place their coils in a high-corrosion-resistant casing for protection. When the transformer is in operation, the coils and the core will generate a lot of heat. If the heat is not dissipated in time, it will cause great harm to the transformer. For this reason, a radiator is installed on the casing, an outer insulating cylinder is provided on the outside of the coil assembly, and a guide plate group is provided inside the casing to guide the cold air into the outer insulating cylinder, so that more cold air passes through the coil, taking away the heat of the coil and improving the heat dissipation efficiency. In the prior art, offshore wind power dry-type transformers generally include a base, a coil assembly and a fixing seat. The base is installed with a lower pad, the core is installed on the base, the high-voltage coil and the low-voltage coil of the coil assembly are both placed on the lower shock-absorbing pad, and then the coil assembly is installed with an outer insulating cylinder. The fixing seat is located on the upper side of the coil and is fixedly connected to the core. At the same time, an upper pad is installed on the lower side of the fixing seat. The upper pad abuts against the high-voltage coil and the low-voltage coil of the coil assembly. In order to fix the outer insulating cylinder, the upper and lower pads are both provided with positioning grooves, and the upper and lower ends of the outer insulating cylinder are respectively inserted into the corresponding positioning grooves. In some existing offshore wind power dry-type transformers, although the outer insulation cylinder is made into two half-cylinder parts so that the outer insulation cylinder does not need to be hoisted when it is disassembled and repaired in the later stage, due to the blocking effect of the upper and lower pads, the fixing seat and the upper pad still need to be removed during the disassembly and assembly of the outer insulation cylinder. The disassembly and assembly of the outer insulation cylinder is still difficult, which causes certain difficulties in maintenance. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems in the prior art. To this end, the present invention provides a spacer for facilitating the disassembly and assembly of an outer insulating cylinder, which can make the disassembly and assembly and maintenance of the half-cylinder of the outer insulating cylinder of a dry-type transformer easier and more convenient.

[0004] The utility model also provides a dry-type transformer having the spacer block for facilitating the disassembly and assembly of the outer insulating cylinder.

[0005] According to the first aspect of the present invention, a gasket for facilitating the disassembly and assembly of an outer insulating tube includes a gasket body and a limit block. The gasket body has a high-voltage coil pressing portion and a low-voltage coil pressing portion. The gasket body is provided with a mounting portion. The mounting portion is located on the side of the high-voltage coil pressing portion away from the low-voltage coil pressing portion. The limit block is detachably mounted on the mounting portion. The limit block is spaced apart from the high-voltage coil pressing portion. The limit block, the mounting portion and the high-voltage coil pressing portion together form a positioning groove for positioning the outer insulating tube.

[0006] The gasket block for facilitating the disassembly and assembly of the outer insulating cylinder according to the embodiment of the present invention has at least the following beneficial effects: through the above-mentioned arrangement, the gasket block provided by the present invention, the positioning groove for positioning the outer insulating cylinder is formed by the limit block, the mounting portion and the high-voltage coil pressing portion, and the limit block is removable. Therefore, after the gasket block provided by the present invention is applied to the dry-type transformer, the half-cylinder part of the outer insulating cylinder of the dry-type transformer can be inserted into the positioning groove, and the limit block is on the outside of the half-cylinder part. When the outer insulating cylinder of the dry-type transformer needs to be repaired, the limit block can be removed first to avoid the gasket block blocking the disassembly and assembly of the half-cylinder part. After completing the replacement and repair of the half-cylinder part, the upper limit block can be installed. As a result, the disassembly and assembly of the half-cylinder part of the outer insulating cylinder is easier and more convenient.

[0007] According to some embodiments of the present invention, the mounting portion is provided with connecting members on both side surfaces in the width direction thereof by bolts, the limiting block is located between the two connecting members, and the limiting block is connected to the two connecting members by bolts.

[0008] According to some embodiments of the present invention, one of the mounting portion and the limiting block is provided with a positioning groove, and the other is provided with a positioning ridge, and the positioning ridge is inserted into the positioning groove.

[0009] According to some embodiments of the present invention, a stopper is provided at one end of the connecting member away from the high-voltage coil pressing portion, the stopper is aligned with the limiting block, and the limiting block is connected to the stopper by a bolt.

[0010] According to some embodiments of the present invention, the limiting block is provided with connecting parts at both ends in the width direction thereof, the mounting part is located between the two connecting parts, and the connecting part is connected to the mounting part by bolts.

[0011] According to some embodiments of the present invention, a slot for positioning the inner insulating tube is formed between the high-voltage coil pressing portion and the low-voltage coil pressing portion.

[0012] According to some embodiments of the present invention, a first shock-absorbing pad is installed on the bottom surface of the high-voltage coil pressing portion.

[0013] According to some embodiments of the present invention, a second shock-absorbing pad is installed on the bottom surface of the low-voltage coil pressing portion.

[0014] According to the second aspect of the present invention, a dry-type transformer includes a base, a fixing seat and at least one coil assembly, wherein the fixing seat is located on the upper side of the base; an outer insulating cylinder is sleeved on the outer side of each coil assembly, and the outer insulating cylinder includes two half-cylinder parts that are detachably enclosed together, and the coil assembly is installed between the base and the fixing seat; at least four pads as described above are arranged between each coil assembly and the fixing seat, wherein the fixing seat is fixedly connected to the pad body of the corresponding pad, the high-voltage coil pressing part of the pad body presses against the high-voltage coil of the coil assembly, and the low-voltage coil pressing part of the pad body presses against the high-voltage coil of the coil assembly, and the upper end of each half-cylinder part is inserted into the positioning groove of the corresponding two pads, and the limit block of the pad is located on the outside of the half-cylinder part.

[0015] The dry-type transformer according to the embodiment of the present invention has at least the following beneficial effects: through the above-mentioned arrangement, the fixing seat located on the upper side of the coil assembly can fix the coil assembly by pressing the corresponding pad, and the upper end of each half-cylinder of the outer insulating cylinder sleeved on the outside of the coil assembly can be positioned by the positioning grooves of the corresponding two pads, wherein, since the positioning groove of the pad is formed by the limit block, the mounting portion and the high-voltage coil pressing portion, and the limit block is detachable, when the outer insulating cylinder of the dry-type transformer needs to be repaired, the limit block of the pad located on the upper side of the coil assembly can be removed, so that the upper end of the half-cylinder will not be blocked by the pad, and the upper end of the half-cylinder becomes a free end, and then the half-cylinder of the outer insulating cylinder can be taken out more conveniently. After completing the replacement and maintenance of the half-cylinder, the upper limit block can be installed. Therefore, the disassembly and assembly of the fixing seat and the corresponding pad can be omitted, making the disassembly and assembly of the half-cylinder of the outer insulating cylinder easier and more convenient.

[0016] According to some embodiments of the present invention, at least four pads as described above for facilitating the disassembly and assembly of the outer insulating cylinder are arranged between each of the coil assemblies and the base, wherein the base is fixedly connected to the pad body of the corresponding pad, and the lower end of each semi-cylinder is inserted into the positioning groove of the corresponding two pads.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 This is a schematic diagram of a spacer for facilitating the disassembly and assembly of an outer insulating cylinder according to an embodiment of the utility model;

[0020] Figure 2 for Figure 1 An exploded view of a spacer block for facilitating the disassembly and assembly of the outer insulating cylinder is shown;

[0021] Figure 3 This is a schematic diagram of a spacer for facilitating the disassembly and assembly of an outer insulating cylinder according to an embodiment of the utility model;

[0022] Figure 4 This is a schematic diagram of a dry-type transformer according to an embodiment of the present utility model;

[0023] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0024] Reference numerals:

[0025] The pad block body 110, the high-voltage coil pressing part 111, the low-voltage coil pressing part 112, the mounting part 113, the positioning slide groove 114, the limit block 120, the positioning ridge 121, the connecting part 122, the connecting part 130, the blocking part 131, the positioning groove 140, the card slot 150, the first shock-absorbing pad 160, the second shock-absorbing pad 170, the base 200, the fixing seat 300, the coil assembly 400, the high-voltage coil 410, the low-voltage coil 420, the inner insulating cylinder 430, and the semi-cylinder part 500. DETAILED DESCRIPTION

[0026] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0027] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0028] In the description of this utility model, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0029] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0030] Reference Figures 1 to 5 According to the first embodiment of the present invention, a gasket for facilitating the disassembly and assembly of the outer insulating tube includes a gasket body 110 and a limit block 120. The gasket body 110 has a high-voltage coil pressing portion 111 and a low-voltage coil pressing portion 112. The gasket body 110 is provided with a mounting portion 113. The mounting portion 113 is located on the side of the high-voltage coil pressing portion 111 away from the low-voltage coil pressing portion 112. The limit block 120 is detachably mounted on the mounting portion 113. The limit block 120 is spaced apart from the high-voltage coil pressing portion 111. The limit block 120, the mounting portion 113 and the high-voltage coil pressing portion 111 enclose a positioning groove 140 for positioning the outer insulating tube.

[0031] Reference Figure 4 and Figure 5 Through the above-mentioned arrangement, the spacer provided by the present invention has a positioning groove 140 for positioning the outer insulating cylinder, which is formed by the limit block 120, the mounting portion 113 and the high-voltage coil pressing portion 111, and the limit block 120 is detachable. Therefore, after the spacer provided by the present invention is applied to the dry-type transformer, the semi-cylinder part 500 of the outer insulating cylinder of the dry-type transformer can be inserted into the positioning groove 140 of the spacer, and the limit block 120 is located on the outside of the semi-cylinder part 500. When the outer insulating cylinder of the dry-type transformer needs to be repaired, the limit block 120 can be removed first to avoid the spacer blocking the disassembly and assembly of the semi-cylinder part 500. After the semi-cylinder part 500 is replaced or repaired, the upper limit block 120 can be installed. As a result, the disassembly and assembly of the semi-cylinder part 500 of the outer insulating cylinder is easier and more convenient.

[0032] When the coil assembly 400 of the dry-type transformer shakes during transportation or in other situations, the coil assembly 400 will cause the outer insulating tube to shake together, causing the half-tube part 500 of the outer insulating tube to collide with the side wall of the positioning groove 140. Therefore, the side wall strength of the positioning groove 140 of the pad needs to be high enough to prevent the shaking of the outer insulating tube.

[0033] Reference Figure 1 and Figure 2 According to some embodiments of the present invention, the mounting portion 113 is provided with connectors 130 on both side surfaces in the width direction thereof by bolts, the limiting block 120 is located between the two connectors 130, and the limiting block 120 is connected to the two connectors 130 by bolts. The above arrangement can improve the connection strength between the limiting block 120 and the pad block body 110, thereby making the side wall strength of the positioning groove 140 higher.

[0034] Reference Figure 1 and Figure 2 According to some embodiments of the present invention, one of the mounting portion 113 and the limit block 120 is provided with a positioning groove 114, and the other is provided with a positioning ridge 121. The positioning ridge 121 is inserted into the positioning groove 114. Therefore, the limit block 120 and the connecting member 130 can be connected by a single bolt to reduce the use of bolts, and the mutual cooperation between the positioning ridge 121 and the positioning groove 114 is used to position the limit block 120 to prevent the limit block 120 from rotating relative to the pad block body 110, thereby improving the blocking effect of the limit block 120 and ensuring the strength of the side wall of the positioning groove 140.

[0035] Reference Figure 1 and Figure 2 According to some embodiments of the present invention, a stopper 131 is provided at one end of the connector 130 away from the high-voltage coil pressing portion 111. The stopper 131 is aligned with the stopper 120, and the stopper 120 is bolted to the stopper 131. Thus, the stopper 131 also serves as the sidewall of the positioning groove 140, blocking and limiting the semi-cylinder 500 of the outer insulating cylinder. This increases the strength of the sidewall of the positioning groove 140. When disassembling the semi-cylinder 500, it is necessary to first remove the stopper 120 and connector 130, and then disassemble the semi-cylinder 500.

[0036] Reference Figure 3 According to other embodiments of the present invention, the limit block 120 can also be mounted to the mounting portion 113 in other ways. For example, the limit block 120 can be provided with connecting portions 122 at both ends of its width direction, and the mounting portion 113 is located between the two connecting portions 122. The connecting portions 122 are connected to the mounting portion 113 via bolts. With this arrangement, when disassembling the semi-cylinder 500, only the limit block 120 needs to be removed. After reinstalling the semi-cylinder 500, only the upper limit block 120 needs to be installed, making it easier to disassemble and assemble the semi-cylinder 500.

[0037] Reference Figure 4 and Figure 5 Typically, the coil assembly 400 includes a high-voltage coil 410 and a low-voltage coil 420 located inside the high-voltage coil 410 , and an inner insulating tube 430 is provided between the high-voltage coil 410 and the low-voltage coil 420 .

[0038] Reference Figure 1 and Figure 5 According to some embodiments of the present invention, a slot 150 for positioning the inner insulating tube 430 is formed between the high-voltage coil pressing portion 111 and the low-voltage coil pressing portion 112. Thus, the gasket provided by the present invention can use the slot 150 to position the inner insulating tube 430 of the coil assembly 400.

[0039] Reference Figure 1 and Figure 5 According to some embodiments of the present invention, a first shock-absorbing pad 160 is installed on the bottom surface of the high-voltage coil pressing portion 111 to form a buffering and shock-absorbing effect on the high-voltage coil 410 of the coil assembly 400, thereby reducing the shaking impact on the coil assembly 400 during the movement of the dry-type transformer.

[0040] Reference Figure 1 and Figure 5 According to some embodiments of the present invention, a second shock-absorbing pad 170 is installed on the bottom surface of the low-voltage coil pressing portion 112 to form a buffering and shock-absorbing effect on the low-voltage coil 420 of the coil assembly 400, thereby reducing the shaking impact on the coil assembly 400 during the movement of the dry-type transformer.

[0041] Reference Figure 4 and Figure 5 According to the second embodiment of the present invention, the dry-type transformer includes a base 200, a fixing base 300 and at least one coil assembly 400. The fixing base 300 is located on the upper side of the base 200. An outer insulating cylinder is provided on the outer side of each coil assembly 400. The outer insulating cylinder includes two detachably enclosed half-cylinders 500. The coil assembly 400 is installed between the base 200 and the fixing base 300. At least four of the above-mentioned A gasket that is convenient for disassembling and assembling the outer insulating cylinder, wherein the fixing seat 300 is fixedly connected to the gasket body 110 of the corresponding gasket, the high-voltage coil pressing part 111 of the gasket body 110 presses against the high-voltage coil 410 of the coil assembly 400, and the low-voltage coil pressing part 112 of the gasket body 110 presses against the high-voltage coil 410 of the coil assembly 400, and the upper end of each semi-cylinder 500 is inserted into the positioning groove 140 of the corresponding two gaskets, and the limit block 120 of the gasket is located on the outside of the semi-cylinder 500.

[0042] Through the above-mentioned arrangement, the fixing seat 300 located on the upper side of the coil assembly 400 can be pressed and fixed to the coil assembly 400 by the corresponding pad, and the upper end of each half-cylinder 500 of the outer insulating cylinder sleeved on the outside of the coil assembly 400 can be positioned by the positioning grooves 140 of the corresponding two pads, wherein, since the positioning grooves 140 of the pads are formed by the limit blocks 120, the mounting portion 113 and the high-voltage coil pressing portion 111, and the limit blocks 120 are removable, when it is necessary to repair and disassemble the outer insulating cylinder of the dry-type transformer, the limit blocks 120 of the pads located on the upper side of the coil assembly 400 can be removed, so that the upper end of the half-cylinder 500 will not be blocked by the pads, and the upper end of the half-cylinder 500 becomes a free end. After completing the replacement and maintenance of the half-cylinder 500, the upper limit block 120 can be installed. In this way, the disassembly of the fixing seat 300 and the corresponding pads can be omitted, and the disassembly of the half-cylinder 500 of the outer insulating cylinder is easier and more convenient.

[0043] Reference Figure 4 and Figure 5 According to some embodiments of the present invention, at least four spacers, such as those described above, are positioned between each coil assembly 400 and the base 200 to facilitate the assembly and removal of the outer insulating cylinder. The base 200 is fixedly connected to the corresponding spacer body 110, and the lower end of each semi-cylinder 500 is inserted into the positioning slots 140 of the two corresponding spacers. Therefore, when disassembling a semi-cylinder 500, the stoppers 120 of the spacers on both sides of the semi-cylinder 500 can be removed, leaving both ends of the semi-cylinder 500 free, making it easier to remove the semi-cylinder 500 from the coil assembly 400.

[0044] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] The embodiment is described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiment. Various changes can be made within the knowledge of ordinary technicians in the technical field without departing from the present invention.

Claims

1. A spacer for facilitating the disassembly and assembly of an outer insulating cylinder, characterized in that: include: The pad block body (110) has a high-voltage coil pressing portion (111) and a low-voltage coil pressing portion (112); the pad block body (110) is provided with a mounting portion (113); the mounting portion (113) is located on a side of the high-voltage coil pressing portion (111) facing away from the low-voltage coil pressing portion (112); A limit block (120) is detachably mounted on the mounting portion (113); the limit block (120) and the high-voltage coil pressing portion (111) are spaced apart; the limit block (120), the mounting portion (113) and the high-voltage coil pressing portion (111) together form a positioning groove (140) for positioning the outer insulating tube.

2. The spacer for facilitating the disassembly and assembly of the outer insulating cylinder according to claim 1, characterized in that: The mounting portion (113) is provided with connecting members (130) on both sides in the width direction thereof via bolts, the limiting block (120) is located between the two connecting members (130), and the limiting block (120) is connected to the two connecting members (130) via bolts.

3. The spacer for facilitating the disassembly and assembly of the outer insulating cylinder according to claim 2, characterized in that: One of the mounting portion (113) and the limiting block (120) is provided with a positioning slot (114), and the other is provided with a positioning ridge (121), and the positioning ridge (121) is inserted into the positioning slot (114).

4. The spacer for facilitating the disassembly and assembly of the outer insulating cylinder according to claim 2, characterized in that: A stopper (131) is provided at one end of the connecting member (130) away from the high-voltage coil pressing portion (111), the stopper (131) is aligned with the limit block (120), and the limit block (120) is connected to the stopper (131) by means of bolts.

5. The spacer for facilitating the disassembly and assembly of the outer insulating cylinder according to claim 1, characterized in that: The limiting block (120) is provided with connecting parts (122) at both ends in the width direction thereof, the mounting part (113) is located between the two connecting parts (122), and the connecting part (122) is connected to the mounting part (113) via bolts.

6. The spacer for facilitating the disassembly and assembly of the outer insulating cylinder according to claim 1, characterized in that: A clamping groove (150) for positioning the inner insulating cylinder (430) is formed between the high-voltage coil pressing portion (111) and the low-voltage coil pressing portion (112).

7. The spacer for facilitating the disassembly and assembly of the outer insulating cylinder according to claim 1, characterized in that: A first shock-absorbing pad (160) is installed on the bottom surface of the high-voltage coil pressing portion (111).

8. The spacer for facilitating the disassembly and assembly of the outer insulating cylinder according to claim 1, characterized in that: A second shock-absorbing pad (170) is installed on the bottom surface of the low-voltage coil pressing portion (112).

9. A dry-type transformer, characterized in that: include: Base (200); A fixing seat (300) is located on the upper side of the base (200); At least one coil assembly (400), each coil assembly (400) being provided with an outer insulating cylinder on its outer side, the outer insulating cylinder comprising two detachably enclosed half-cylinders (500), the coil assembly (400) being installed between the base (200) and the fixing seat (300); At least four gaskets for facilitating the disassembly and assembly of the outer insulating tube as described in any one of claims 1 to 8 are arranged between each coil assembly (400) and the fixing seat (300), wherein the fixing seat (300) is fixedly connected to the gasket body (110) of the corresponding gasket, the high-voltage coil pressing portion (111) of the gasket body (110) presses against the high-voltage coil (410) of the coil assembly (400), and the low-voltage coil pressing portion (112) of the gasket body (110) presses against the high-voltage coil (410) of the coil assembly (400), the upper end of each semi-cylinder (500) is inserted into the positioning groove (140) of the corresponding two gaskets, and the limit block (120) of the gasket is located on the outside of the semi-cylinder (500).

10. The dry-type transformer according to claim 9, characterized in that: At least four pads for facilitating the disassembly and assembly of the outer insulating cylinder as described in any one of claims 1 to 8 are arranged between each of the coil assemblies (400) and the base (200), wherein the base (200) is fixedly connected to the pad body (110) of the corresponding pad, and the lower end of each of the semi-cylinder parts (500) is inserted into the positioning grooves (140) of the corresponding two pads.

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