Transformer and installation method

Abstract

The transformer comprises an iron core and a fixing assembly, the iron core is provided with a coil, a connecting frame is arranged at the upper end of the iron core, and pressing blocks are arranged at the upper end and the lower end of the coil; the fixing assembly comprises an upper clamping piece, a lower clamping piece and a plurality of connecting pieces, the upper clamping piece is arranged above the iron core and connected to the connecting frame, the lower clamping piece is arranged below the iron core, the connecting pieces are circumferentially arranged between the upper clamping piece and the lower clamping piece and are matched to connect the upper clamping piece and the lower clamping piece, the upper clamping piece is provided with an adjustable pressing nail, and the lower clamping piece is provided with an adjustable pressing nail. And the pressing block at the upper end of the coil can be tightly pressed by pressing the adjusting pressing nail, so that the coil is fixed. The whole iron core is fixed by the upper clamping piece, the lower clamping piece and the connecting pieces in a matched mode, the whole iron core is in a suspended state, and the coil does not need to bear the weight of the iron core. The pressing blocks are arranged at the upper end and the lower end of the coil, and the pressing nails are used for pressing the pressing blocks at the upper end of the coil, so that the coil is fixed, and noise generated during operation can be effectively reduced.

Description

Technical Field

[0001] The invention relates to the technical field of transformer equipment manufacturing, and in particular to a transformer and an installation method. Background Art

[0002] With the development of power grids, energy conservation requirements are getting higher and higher. Amorphous alloy three-dimensional wound core transformers are widely used due to their advantages such as energy saving and environmental protection. However, in related technologies, compared with silicon steel core products, amorphous alloy three-dimensional wound cores vibrate due to unstable fixation during operation, which will produce greater noise. The current suspension method is to set pads at the upper and lower ends of the core so that the pads abut against the coils, and support the core through the coils to achieve the purpose of suspension. However, this suspension method has the following disadvantages: (1) The part where the coil and the pressing block abut against each other needs to bear the weight of the core, which may cause local damage to the coil; (ii) When the coil is used to support the core, the coil will tilt inward, which will have an adverse effect on the transformer's ability to withstand short circuits; (3) The pressing block is located between the coil and the core and is fixed only by bonding and pressing. When the pressing block bears the weight of the core, there is a risk of it falling during transportation; Therefore, it is necessary to improve the current fixing method to improve the reliability of the product. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a transformer, in which the core is fixed by an upper clamp, a lower clamp and a plurality of connecting parts, the fixing method is stable, and the weight of the core is supported by the connecting parts and the lower clamp after being transferred to the upper clamp, the core is in a suspended state as a whole, and the coil does not need to bear the weight of the core; by arranging pressure blocks at the upper and lower ends of the coil, and using the pressure pins of the upper clamp to press the pressure block at the upper end of the coil, while the pressure pins of the upper clamp press the pressure block, the pressure block generates a downward pressing force on the coil, so that the lower end of the coil fits with the pressure block located at the lower end of the coil, thereby further fixing the coil, effectively reducing the noise generated during operation, and reducing the impact on surrounding residents.

[0004] In a second aspect, the present invention also proposes an installation method applied to the above transformer.

[0005] According to the first aspect of the present invention, a transformer is provided in an embodiment, comprising: an iron core and a fixing assembly, wherein the iron core is provided with a coil, a connecting frame is provided at the upper end of the iron core, and pressure blocks are provided at the upper and lower ends of the coil; the fixing assembly comprises an upper clamp, a lower clamp and a plurality of connecting members, wherein the upper clamp is provided above the iron core and connected to the connecting frame, the lower clamp is provided below the iron core, a plurality of the connecting members are circumferentially arranged between the upper clamp and the lower clamp, a plurality of the connecting members cooperate to connect the upper clamp and the lower clamp, the upper clamp is provided with an adjustable pressure pin, and adjusting the pressure pin to press downward can compress the pressure block located at the upper end of the coil, thereby fixing the coil, the upper end of the connecting frame is provided with a connecting column, the upper clamp is provided with a socket, the connecting column passes through the socket, and the connecting column is connected with a nut to fix the upper clamp.

[0006] The transformer provided by the embodiment of the first aspect of the present invention has at least the following beneficial effects: during installation, the upper clamp is first installed on the upper end of the connecting frame, the lower clamp is set on the lower end of the iron core, and then the upper clamp and the lower clamp are connected as a whole by using the connecting piece, and then the coil is installed on the iron core and pressure blocks are installed at the upper and lower ends of the coil, and finally the pressure nail is installed on the upper clamp, and the pressure nail is adjusted so that the pressure nail presses the pressure block located at the upper end of the coil downward, and the pressure block exerts a downward pressing force on the coil, so that the lower end of the coil fits with the pressure block located at the lower end of the coil, thereby completing the installation of the transformer. After the installation is completed, the overall structure of the iron core is The coil is fixed by the cooperation of an upper clamp, a lower clamp and a plurality of connecting members, and the fixing method is stable. After the weight of the iron core is transferred to the upper clamp, it is supported by the connecting member and the lower clamp. The iron core is in a suspended state as a whole, and the coil does not need to bear the weight of the iron core. By arranging pressure blocks at the upper and lower ends of the coil, and using the pressure pins of the upper clamp to press the pressure block at the upper end of the coil, while the pressure pins of the upper clamp press the pressure block, the pressure block generates a downward pressing force on the coil, so that the lower end of the coil fits with the pressure block located at the lower end of the coil, thereby achieving further fixation of the coil, effectively reducing the noise generated during operation, and reducing the impact on surrounding residents.

[0007] According to the transformer provided by the embodiment of the first aspect of the present invention, the lower clamp is provided with a first positioning portion, the connecting frame is provided with a second positioning portion, and the first positioning portion is engaged with the second positioning portion.

[0008] According to the transformer provided by the embodiment of the first aspect of the present invention, the connecting frame is provided with a plurality of the connecting columns at intervals, the upper clamp is provided with a plurality of the plug holes, and the connecting columns correspond to the plug holes one by one.

[0009] According to the transformer provided by the embodiment of the first aspect of the present invention, the connecting frame extends from top to bottom, and connecting columns are provided at the upper and lower ends of the connecting frame, and the upper clamp and the lower clamp are both provided with insertion holes, and the connecting column passes through the insertion holes, and the connecting column is connected with a nut to fix the upper clamp and the lower clamp.

[0010] According to the transformer provided by the embodiment of the first aspect of the present invention, the upper clamp and the lower clamp both include a vertical plate and a connecting plate extending outward, the connecting plate is fixedly connected to the vertical plate, and the connecting member and the pressing nail are both connected to the connecting plate.

[0011] According to the transformer provided by the embodiment of the first aspect of the present invention, reinforcing ribs are provided between the vertical plate and the connecting plate.

[0012] According to the transformer provided by the embodiment of the first aspect of the present invention, a nut or a buckle is provided at the end of the connecting member to connect the upper clamping member and / or the lower clamping member.

[0013] According to the transformer provided by the embodiment of the first aspect of the present invention, a mounting hole is provided on the connecting plate, two nuts are arranged on the pressing nail at intervals, the pressing nail is passed through the mounting hole, and the two nuts respectively abut against the upper and lower sides of the connecting plate.

[0014] According to the transformer provided by the embodiment of the first aspect of the present invention, a pressure pad is provided at one end of the pressure pin close to the pressure block, and the pressure pad abuts against the outer wall of the pressure block.

[0015] According to the transformer provided by the embodiment of the first aspect of the present invention, the iron core has a core column, the coil is arranged on the core column, and the connecting member is parallel to the core column.

[0016] The installation method provided in accordance with the second aspect of the present invention is applied to the transformer according to the first aspect of the present invention, and the installation method includes: Install the upper clamp on the upper end of the connecting frame, arrange the lower clamp on the lower end of the core, and connect the upper clamp with the lower clamp by the connecting member to fix the core; installing the coil to the core; Installing the pressing blocks to the upper and lower ends of the coil; Installing the pressing nail on the upper clamp; The pressing pin is adjusted so that the pressing pin presses the pressing block downward to fix the coil.

[0017] The installation method provided by the embodiment of the second aspect of the present invention has at least the following beneficial effects: during installation, the upper clamp is first installed on the upper end of the connecting frame, the lower clamp is set on the lower end of the iron core, and then the upper clamp and the lower clamp are connected as a whole using the connecting piece, and then the coil is installed on the iron core and pressure blocks are installed at the upper and lower ends of the coil, and finally the pressure nail is installed on the upper clamp, and the pressure nail is adjusted so that the pressure nail presses the pressure block located at the upper end of the coil downward, and the pressure block exerts a downward pressing force on the coil, so that the lower end of the coil fits with the pressure block located at the lower end of the coil, thereby completing the installation of the transformer. After the installation is completed, the whole core is The body is fixed by an upper clamp, a lower clamp and a plurality of connecting parts, the fixing method is stable, and the weight of the iron core is supported by the connecting parts and the lower clamp after being transferred to the upper clamp. The iron core is in a suspended state as a whole, and the coil does not need to bear the weight of the iron core; by arranging pressure blocks at the upper and lower ends of the coil, and using the pressure pins of the upper clamp to press the pressure block at the upper end of the coil, while the pressure pins of the upper clamp press the pressure block, the pressure block generates a downward pressing force on the coil, so that the lower end of the coil fits with the pressure block located at the lower end of the coil, thereby achieving further fixation of the coil, which can effectively reduce the noise generated during operation and reduce the impact on surrounding residents.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 An overall schematic diagram of a transformer provided by an embodiment of the present invention; Figure 2 A side view of a transformer provided by an embodiment of the present invention; Figure 3 A schematic diagram of the structure of the core and the connecting frame provided by an embodiment of the present invention; Figure 4 A schematic structural diagram of another iron core and a connecting frame provided in an embodiment of the present invention; Figure 5 A schematic structural diagram of an iron core, a connecting frame and a positioning hole provided in an embodiment of the present invention.

[0020] The figures are as follows: The core 100 , the coil 110 , the connecting frame 120 , the positioning hole 121 , the upper clamp 130 , the lower clamp 140 , the connecting member 150 , the pressing block 160 , the pressing nail 170 , the connecting column 180 , the connecting plate 190 , and the reinforcing rib 200 . DETAILED DESCRIPTION

[0021] Embodiments of the present invention are described in detail below, examples of which 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 only used to explain the present invention, and cannot be understood as limiting the present invention.

[0022] In the description of the present invention, it is necessary to understand that descriptions involving orientation, such as up, down, left, right, etc., the orientations or positional relationships indicated are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0023] In the description of the present invention, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0024] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. 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.

[0025] With the development of power grids, energy conservation requirements are getting higher and higher. Amorphous alloy three-dimensional wound core transformers are widely used due to their advantages such as energy saving and environmental protection. However, in related technologies, compared with silicon steel core products, amorphous alloy three-dimensional wound cores vibrate due to unstable fixation during operation, which will produce greater noise. The current suspension method is to set pads at the upper and lower ends of the core so that the pads abut against the coils, and support the core through the coils to achieve the purpose of suspension. However, this suspension method has the following disadvantages: (1) The part where the coil and the pressure block abut against each other needs to bear the weight of the core, which may cause local damage to the coil.

[0026] (ii) When the coil is used to support the core, the coil will tilt inward, which will have an adverse effect on the transformer's ability to withstand short circuits; (3) The pressing block is located between the coil and the core and is fixed only by bonding and pressing. When the pressing block is under the weight of the core, there is a risk of it falling during transportation.

[0027] In order to solve the above problems, an embodiment of the present invention provides a transformer. After installation, the core 100 is fixed by the upper clamp 130, the lower clamp 140 and a plurality of connecting members 150. The fixing method is stable, and the weight of the core 100 is transferred to the upper clamp 130 and supported by the connecting member 150 and the lower clamp 140. The core 100 is in a suspended state as a whole, and the coil 110 does not need to bear the weight of the core 100. By arranging pressure blocks 160 at the upper and lower ends of the coil 110, and utilizing the pressure of the upper clamp 130, the coil 110 is connected to the upper and lower ends of the coil 110. The nail 170 presses the pressing block 160 at the upper end of the coil 110. When the pressing nail 170 of the upper clamp 130 presses the pressing block 160, the pressing block 160 generates a downward pressing force on the coil 110, so that the lower end of the coil 110 fits with the pressing block 160 located at the lower end of the coil 110, thereby further fixing the coil 110, effectively reducing the noise generated during operation, and reducing the impact on surrounding residents. The specific structure and function of the transformer provided in the embodiment of the present invention will be further explained in conjunction with the text and drawings below.

[0028] Reference Figures 1 to 3 The transformer provided according to an embodiment of the present invention comprises: an iron core 100 and a fixing assembly, wherein the iron core 100 is provided with a coil 110, and a connecting frame 120 is provided at the upper end of the iron core 100; the fixing assembly comprises an upper clamp 130, a lower clamp 140 and a plurality of connecting members 150, wherein the upper clamp 130 is provided above the iron core 100 and connected to the connecting frame 120, the lower clamp 140 is provided below the iron core 100, and the plurality of connecting members 150 are circumferentially arranged between the upper clamp 130 and the lower clamp. 140, a plurality of connecting members 150 cooperate to connect the upper clamp 130 and the lower clamp 140, and pressure blocks 160 are provided at the upper and lower ends of the coil 110, and the upper clamp 130 is provided with adjustable pressure pins 170. Adjusting the pressure pins 170 can press the pressure block 160 at the upper end of the coil 110 downward, and because the pressure block 160 generates a downward pressing force on the coil 110, the lower end of the coil 110 can fit with the pressure block 160 located at the lower end of the coil 110, thereby fixing the coil 110.

[0029] It can be understood that the lower clamp 140 is provided with a first positioning portion, which can be a positioning hole 121, a positioning groove, etc., and the connecting frame 120 is provided with a second positioning portion, which can be a positioning pin, a positioning boss, etc. The first positioning portion and the second positioning portion are not shown and can be set according to actual needs. The first positioning portion and the second positioning portion are engaged to achieve positioning between the lower clamp 140 and the connecting frame 120; specifically, in some embodiments, the first positioning portion is a positioning pin, which is located at the upper end of the lower clamp 140, and the second positioning portion is a positioning hole 121, which is located at the lower end of the connecting frame 120, and the positioning pin is engaged with the positioning hole 121.

[0030] According to the transformer provided by the embodiment of the present invention, when installing, the upper clamp 130 is first installed on the upper end of the connecting frame 120, and the lower clamp 140 is set at the lower end of the iron core 100, and then the upper clamp 130 and the lower clamp 140 are connected as a whole by using the connecting member 150, and then the coil 110 is installed to the iron core 100 through the positioning hole 121 and the positioning pin (not shown in the figure), and the pressing block 160 is installed at the upper and lower ends of the coil 110, and finally the pressing pin 170 is installed on the upper clamp 130, and the pressing pin 170 is adjusted so that the pressing pin 170 presses the pressing block 160 located at the upper end of the coil 110 downward, and the pressing block 160 generates a downward pressing force on the coil 110, so that the lower end of the coil 110 is fitted with the pressing block 160 located at the lower end of the coil 110, thereby completing the installation of the transformer. After the installation is completed, the whole of the iron core 100 The body is fixed by the upper clamp 130, the lower clamp 140 and a plurality of connecting members 150, the fixing method is stable, and the weight of the iron core 100 is transmitted to the upper clamp 130 and then supported by the connecting members 150 and the lower clamp 140. The iron core 100 is in a suspended state as a whole, and the coil 110 does not need to bear the weight of the iron core 100; by arranging a pressure block 160 at the upper and lower ends of the coil 110, and using the pressure pin 170 of the upper clamp 130 to press the pressure block 160 at the upper end of the coil 110, while the pressure pin 170 of the upper clamp 130 presses the pressure block 160, the pressure block 160 generates a downward pressing force on the coil 110, so that the lower end of the coil 110 is in contact with the pressure block 160 located at the lower end of the coil 110, thereby further fixing the coil 110, effectively reducing the noise generated during operation, and reducing the impact on surrounding residents.

[0031] It can be understood that the upper clamp 130, the lower clamp 140 and the multiple connecting members 150 fix the core 100 as a whole and suspend the core 100. The weight of the core 100 is transferred to the upper clamp 130 through the connecting frame 120, and then transferred to the lower clamp 140 through the multiple connecting members 150 arranged at intervals. The multiple connecting members 150 can disperse the force and effectively avoid the problem of excessive local force. The pressure block 160 is pressed by the pressure pin 170 on the upper clamp 130. Under the premise of not having to bear the weight of the core 100, the coil 110 is not easy to fall during transportation.

[0032] It should be noted that the core 100 is a three-dimensional wound core, including an inner mold and an outer mold. The outer mold is relatively wide, and the connecting frame 120 is arranged on the outer mold, which is beneficial to enhancing the overall structural strength of the core 100.

[0033] Reference Figure 1 According to the transformer provided by the embodiment of the present invention, a connecting column 180 is provided at the upper end of the connecting frame 120, and the upper clamp 130 is provided with a socket. The connecting column 180 passes through the socket. The connecting column 180 is connected with a nut to fix the upper clamp 130. The connection method between the connecting frame 120 and the upper clamp 130 is stable and reliable.

[0034] Reference Figures 1 to 3 According to the transformer provided by the embodiment of the present invention, the connecting frame 120 is provided with a plurality of connecting columns 180 at intervals, and the upper clamp 130 is provided with a plurality of sockets, the connecting columns 180 correspond to the sockets one by one, and each connecting column 180 is inserted into a socket and fixed by a nut, which can further increase the stability of the connection between the connecting frame 120 and the upper clamp 130.

[0035] Reference Figure 3 and Figure 4 According to the transformer provided by the embodiment of the present invention, the connecting frame 120 extends from top to bottom to the lower end of the coil 110, and connecting columns 180 are provided at the upper and lower ends of the connecting frame 120. The upper clamp 130 and the lower clamp 140 are both provided with sockets, and the connecting column 180 passes through the sockets. The connecting column 180 is connected with a nut to fix the upper clamp 130 and the lower clamp 140. The connection method of the connecting frame 120, the upper clamp 130 and the lower clamp 140 is stable and reliable.

[0036] It should be noted that after the connecting columns 180 at the upper and lower ends of the connecting frame 120 are respectively connected to the upper clamp 130 and the lower clamp 140, the iron core 100 can be fixed from the bottom to prevent the iron core 100 from shaking; the connecting frame 120 extends from top to bottom to the lower end of the coil 110. After the upper clamp 130 and the lower clamp 140 are installed, the integrity of the entire transformer structure is better and more stable.

[0037] Reference Figure 5 It should be noted that a plurality of positioning holes 121 may be provided at the lower end of the connecting frame 120, and a plurality of positioning pins (not shown in the figure) may be provided at the upper end of the lower clamp 140. During installation, the connecting frame 120 is moved to the upper part of the lower clamp 140, so that the plurality of positioning holes 121 at the lower end of the connecting frame 120 are aligned one by one with the plurality of positioning pins at the upper end of the lower clamp 140, and then the connecting frame 120 is lowered, so that the plurality of positioning pins at the upper end of the lower clamp 140 correspond one by one and are inserted into the plurality of positioning holes 121 at the lower end of the connecting frame 120, which not only realizes the positioning of the core 100, but also prevents the core 100 from shaking.

[0038] It is understandable that the number of the positioning holes 121 can be 2, 3, 4, etc., and can be set according to actual needs; the number of the positioning pins is the same as the number of the positioning holes 121.

[0039] Reference Figure 1 and Figure 2According to the transformer provided by the embodiment of the present invention, the upper clamp 130 and the lower clamp 140 both include a vertical plate and a connecting plate 190 extending outwardly. The connecting plate 190 is fixedly connected to the vertical plate and is located at one end of the upper clamp 130 or the lower clamp 140 close to the coil 110. The connecting plate 190 extending outwardly is conducive to increasing a certain installation space and facilitating the installation of the connector 150 and the press pin 170.

[0040] Reference Figure 1 and Figure 2 According to the transformer provided by the embodiment of the present invention, a reinforcing rib 200 is arranged between the vertical plate and the connecting plate 190 , which is beneficial to strengthening the structural strength between the vertical plate and the connecting plate 190 .

[0041] Reference Figure 1 and Figure 2 According to the transformer provided by the embodiment of the present invention, a nut or a buckle is provided at the end of the connecting member 150 to connect the upper clamp 130 and / or the lower clamp 140; when a nut is provided at the end of the connecting member 150, a through hole for the end of the connecting member 150 to pass through is provided on the connecting plate 190, and the nuts at both ends of the connecting member 150 are tightened at the same time to connect the upper clamp 130 and the lower clamp 140; when a buckle is provided at the end of the connecting member 150, a socket that cooperates with the buckle is provided on the connecting plate 190, and the buckle clamping connection and the socket can realize the function of connecting the upper clamp 130 and the lower clamp 140.

[0042] Reference Figure 1 and Figure 2 According to the transformer provided by the embodiment of the present invention, a mounting hole is provided on the connecting plate 190, and two nuts are arranged on the pressing nail 170 at intervals. The pressing nail 170 is passed through the mounting hole, and the two nuts respectively abut against the upper and lower sides of the connecting plate 190. The two nuts simultaneously press the upper and lower sides of the connecting plate 190, which is conducive to fixing the pressing nail 170.

[0043] It is understandable that the pressing pin 170 can also be adjusted by loosening the nut of the pressing pin 170 so that the pressing pin 170 is moved closer to or farther away from the pressing block 160 , thereby adjusting the pressing force of the pressing pin 170 on the pressing block 160 .

[0044] Reference Figure 1 and Figure 2 According to the transformer provided by the embodiment of the present invention, a pressure pad is provided at one end of the pressure pin 170 close to the pressure block 160. The pressure pad has a large width and abuts against the outer wall of the pressure block 160. The pressing force of the pressure pin 170 can be better transmitted to the pressure block 160 through the pressure pad.

[0045] It should be noted that a relatively wide pressure pad can disperse the pressing force of the pressure pin 170 , and can prevent the pressure block 160 from being deformed due to excessive concentration of the pressing force of the pressure pin 170 .

[0046] Reference Figure 1 and Figure 2 According to the transformer provided by the embodiment of the present invention, the core 100 has a core column, the coil 110 is arranged on the core column, and the connecting piece 150 is parallel to the core column, which is beneficial to improve the force effect when the upper clamp 130, the lower clamp 140 and the multiple connecting pieces 150 cooperate to fix the core 100, thereby improving the integrity of the transformer.

[0047] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. The above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. The present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A transformer, characterized in that: include: The core is provided with a coil, the upper end of the core is provided with a connecting frame, and the upper and lower ends of the coil are provided with pressing blocks; A fixing assembly includes an upper clamp, a lower clamp and a plurality of connecting members, wherein the upper clamp is arranged above the iron core and connected to the connecting frame, the lower clamp is arranged below the iron core, a plurality of connecting members are circumferentially arranged between the upper clamp and the lower clamp, and a plurality of connecting members cooperate to connect the upper clamp and the lower clamp, the upper clamp is provided with an adjustable pressing pin, and adjusting the pressing pin to press downward can press the pressing block located at the upper end of the coil, thereby fixing the coil, the upper end of the connecting frame is provided with a connecting column, the upper clamp is provided with a socket, the connecting column passes through the socket, and the connecting column is connected with a nut to fix the upper clamp.

2. The transformer according to claim 1, characterized in that: The lower clamp is provided with a first positioning portion, the connecting frame is provided with a second positioning portion, and the first positioning portion is engaged with the second positioning portion.

3. The transformer according to claim 1, characterized in that: The connecting frame is provided with a plurality of the connecting columns at intervals, the upper clamp is provided with a plurality of the inserting holes, and the connecting columns correspond to the inserting holes one by one.

4. The transformer according to claim 1, characterized in that: The connecting frame extends from top to bottom, and connecting columns are provided at both upper and lower ends of the connecting frame. The upper clamp and the lower clamp are both provided with insertion holes, and the connecting column passes through the insertion holes. The connecting column is connected with a nut to fix the upper clamp and the lower clamp.

5. The transformer according to claim 1, characterized in that: The upper clamp comprises a vertical plate and a connecting plate extending outward, the connecting plate is fixedly connected to the vertical plate, and the connecting member and the pressing nail are both connected to the connecting plate.

6. The transformer according to claim 5, characterized in that: The end of the connecting member is provided with a nut or a buckle to connect the upper clamping member and / or the lower clamping member.

7. The transformer according to claim 5, characterized in that: The connecting plate is provided with a mounting hole, and two nuts are arranged on the pressing nail at intervals. The pressing nail passes through the mounting hole, and the two nuts abut against the upper and lower sides of the connecting plate respectively.

8. The transformer according to claim 1, characterized in that: A pressure pad is arranged at one end of the pressure pin close to the pressure block, and the pressure pad abuts against the outer wall of the pressure block.

9. The transformer according to claim 1, characterized in that: The iron core has a core column, the coil is arranged on the core column, and the connecting piece is parallel to the core column.

10. An installation method, characterized in that: Applied to the transformer according to any one of claims 1 to 9, the installation method comprises: Install the upper clamp on the upper end of the connecting frame, arrange the lower clamp on the lower end of the core, and connect the upper clamp with the lower clamp by the connecting member to fix the core; installing the coil to the core; Installing the pressing blocks to the upper and lower ends of the coil; Installing the pressing nail on the upper clamp; The pressing pin is adjusted so that the pressing pin presses the pressing block downward to fix the coil.

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