Transformer cooler installation positioning structure and installation method

Abstract

The invention relates to a transformer cooler mounting and positioning structure and a mounting method, upper mounting brackets are arranged on two sides of the upper part of a mounting frame body, lower mounting brackets are arranged on two sides of the lower part of the mounting frame body, and upper positioning brackets are arranged on two sides of the upper part of a cooler; the upper positioning supports are arranged on the two sides of the lower portion of the cooler and fixedly connected with the upper mounting supports on the corresponding sides through short screw rods and nut assemblies, and the lower positioning supports are arranged on the two sides of the lower portion of the cooler and fixedly connected with the lower mounting supports on the corresponding sides through long screw rods and nut assemblies. Positioning bowls are arranged on the upper positioning support and the lower positioning support in a back-to-back mode, the short screws and the long screws are arranged in the corresponding positioning bowls respectively, and the inner walls of the positioning bowls are inclined faces. According to the invention, the bearing safety of the cooler is improved, and the accuracy of the mounting positions of the upper and lower cooling connecting pipes of the cooler is ensured, so that the problems of overlarge bending moment and the like of the cooling connecting pipes are avoided, and the mounting quality is ensured while the mounting efficiency is improved.

Description

Technical Field

[0001] The invention relates to the field of transformer production, in particular to a transformer cooler installation positioning structure and an installation method. Background Art

[0002] like Figure 1 As shown, the installation and positioning structure of the existing transformer cooler is distributed on both sides of the upper part and the lower part, with a total of four positioning brackets, each of which is connected by two screws and nuts, wherein the cooler bracket and the mounting frame are both provided with oblong holes, and the hole width is greater than the screw size. Although the existing structure can ensure the horizontal positioning of the cooler, in the vertical direction, the cooler is fixed only by tightening the screws and nuts, which cannot ensure the accuracy of the installation position of the upper and lower cooling couplings and the main couplings. In addition, under the influence of factors such as the cooler's own weight and the large size of the opening, the connection nut gasket is often significantly bent and deformed and the screw sinks in actual production, which will cause the cooler to sink. At the same time, the above factors will cause the cooling couplings at the upper and lower ends of the cooler to have excessive bending moments, and excessive bending moments of the cooling couplings are prone to cause problems such as oil leakage due to poor sealing of the connection flange surface and quality accidents such as air entering the transformer body, which will cause great safety hazards to the safe operation of the transformer. Summary of the invention

[0003] The object of the present invention is to provide a transformer cooler installation positioning structure and installation method, which enables the cooler's own weight to be dispersed and transmitted to the corresponding installation bracket through each positioning bowl, thereby improving the load-bearing safety and ensuring the accuracy of the installation position of the upper and lower cooling connecting pipes of the cooler, thereby avoiding problems such as excessive bending moment of the cooling connecting pipes, improving the installation efficiency and ensuring the installation quality.

[0004] The objective of the present invention is achieved through the following technical solutions:

[0005] A transformer cooler installation and positioning structure comprises a mounting frame and a cooler, wherein main connecting pipes are provided on the upper and lower sides of the mounting frame, bent cooling connecting pipes are provided on the upper and lower sides of the cooler, and the free ends of the cooling connecting pipes are provided with connecting flanges connected to the main connecting pipes on the corresponding sides, upper mounting brackets are provided on both sides of the upper part of the mounting frame, lower mounting brackets are provided on both sides of the lower part of the mounting frame, upper positioning brackets are provided on both sides of the upper part of the cooler, and the upper positioning brackets are fixedly connected to the upper mounting brackets on the corresponding side by short screw and nut assemblies, lower positioning brackets are provided on both sides of the lower part of the cooler, and the lower positioning brackets are fixedly connected to the lower mounting brackets on the corresponding side by long screw and nut assemblies, positioning bowls arranged back to back are provided on the upper positioning brackets and the short screws and long screws are respectively arranged in the corresponding positioning bowls, and the inner walls of the positioning bowls are inclined.

[0006] The upper mounting bracket and the lower mounting bracket are both provided with mounting plates, the upper positioning bracket and the lower positioning bracket are both provided with support plates, and the support plate and the mounting plate are both provided with mounting holes, the short screw and the long screw pass through the corresponding mounting holes respectively, and the nut assembly includes a plurality of nuts, wherein the first nut and the second nut are arranged on the upper side of the corresponding support plate from top to bottom, the third nut is arranged on the lower side of the corresponding support plate, the fourth nut is arranged on the upper side of the corresponding mounting plate, and the fifth nut is arranged on the lower side of the corresponding mounting plate.

[0007] The upper positioning bracket and the lower positioning bracket have the same structure and both include a support plate and a reinforcing rib plate, wherein the reinforcing rib plate is vertically arranged in the middle of the corresponding support plate and connected to the cooler body, and two mounting holes are arranged on both sides of the reinforcing rib plate.

[0008] The diameter of the first positioning bowl edge on the inner side of the positioning bowl close to the corresponding mounting hole is smaller than the diameter of the second positioning bowl edge on the inner side of the positioning bowl away from the corresponding mounting hole.

[0009] The first positioning bowl rim diameter matches the nut diameter in the nut assembly.

[0010] A method for installing the transformer cooler installation and positioning structure comprises the following steps:

[0011] Step 1: Use the fourth nut and the fifth nut to fix the short screw rod to the corresponding upper mounting bracket and the long screw rod to the corresponding lower mounting bracket respectively;

[0012] Step 2: The third nuts are respectively mounted on the corresponding screw rods, and the height between the third nut and the corresponding fourth nut matches the height of the corresponding positioning bowl;

[0013] Step 3: hoist the cooler into the mounting frame by a crane, wherein the upper positioning brackets are respectively located above the upper mounting brackets on the corresponding sides, and the lower positioning brackets are respectively located above the lower mounting brackets on the corresponding sides;

[0014] Step 4: The cooler is lowered by the crane, and the positioning bowl on the lower side of the lower positioning bracket is sleeved on the long screw on the corresponding side. Then the cooler continues to descend, and the positioning bowl on the lower side of the upper positioning bracket is sleeved on the short screw on the corresponding side. Then the cooler continues to descend until the lower end of the positioning bowl contacts the corresponding mounting bracket.

[0015] Step 5: Put the first nut and the second nut on the corresponding screw rod respectively but do not tighten them, and then connect the cooling couplings on the upper and lower sides of the cooler to the corresponding main couplings. If the connecting flanges of the cooling couplings cannot be aligned with the mounting screw holes on the main couplings, fine-tune the height direction of the cooler by adjusting the positions of the corresponding nuts in the screw rod assembly until the connecting flanges of the cooling couplings are aligned with the mounting screw holes on the main couplings for connection;

[0016] Step 6: After the cooling coupling is connected to the main coupling, tighten the nuts in each set of nut assemblies.

[0017] In step one, the specification of the positioning bowl is first selected and determined. A mounting plate is provided on one side of the positioning bowl, and the mounting plate is connected to the corresponding positioning bracket by bolts.

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

[0019] 1. The present invention allows the weight of the cooler to be dispersedly transmitted to the corresponding mounting bracket through each positioning bowl, thereby improving the load-bearing safety.

[0020] 2. The present invention arranges a long screw on the lower mounting bracket of the mounting frame, so that the cooler slowly descends during lifting, and the positioning bowl on the lower positioning bracket of the cooler can be quickly mounted on the corresponding long screw and limit the horizontal freedom of the cooler. Then the cooler can be descended approximately vertically and the positioning bowl on the upper positioning bracket can be quickly and accurately mounted on the corresponding short screw to completely limit the horizontal freedom of the cooler. This not only ensures the positioning accuracy of the positioning bowl, but also reduces the installation time and improves the installation efficiency.

[0021] 3. The inner wall of the positioning bowl of the present invention is an inclined surface, so that during hoisting installation, the screw and the nut can slide relatively along the inclined surface to achieve rapid and accurate positioning, which can further improve the installation efficiency of the present invention.

[0022] 4. A mounting plate can be provided on one side of the positioning bowl of the present invention, and the mounting plate is connected to the corresponding positioning bracket on the cooler by bolts, so that the positioning bowl with a suitable height and inner diameter can be replaced according to actual needs, thereby improving the flexibility of use and the scope of application of the present invention.

[0023] 5. During the hoisting installation of the present invention, after each positioning bowl is in contact with the corresponding mounting bracket, if the cooling couplings on the upper and lower sides of the cooler cannot be aligned and connected with the corresponding main couplings, the position of the cooler in the height direction can be fine-tuned by adjusting the position of the corresponding nut in the screw assembly until the connecting flange of the cooling coupling is aligned and connected with the mounting screw hole on the main coupling, thereby ensuring the accuracy of the installation position of the upper and lower cooling couplings of the cooler. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1It is a schematic diagram of the use state of the present invention,

[0025] Figure 2 for Figure 1 Schematic diagram of the structure of the intercooler.

[0026] Figure 3 for Figure 2 An enlarged diagram of the positioning bowl.

[0027] Figure 4 for Figure 1 Schematic diagram of the positioning structure on the positioning bracket of the intercooler,

[0028] Figure 5 for Figure 1 Schematic diagram of the positioning structure on the lower positioning bracket of the intercooler,

[0029] Figure 6 for Figure 5 Front view of the positioning structure on the middle and lower positioning brackets.

[0030] Among them, 1 is the main connecting pipe, 2 is the cooler, 201 is the upper positioning bracket, 202 is the lower positioning bracket, 203 is the cooling connecting pipe, 204 is the positioning bowl, 2041 is the first positioning bowl edge, 2042 is the second positioning bowl edge, 205 is the fan, 206 is the mounting hole, 207 is the support plate, 208 is the reinforcing rib plate, 3 is the mounting frame, 301 is the upper mounting bracket, 302 is the lower mounting bracket, 303 is the mounting plate, 4 is the short screw, 5 is the long screw, 6 is the nut assembly, 601 is the first nut, 602 is the second nut, 603 is the third nut, 604 is the fourth nut, and 605 is the fifth nut. DETAILED DESCRIPTION

[0031] The present invention will be further described below in conjunction with the accompanying drawings.

[0032] like Figures 1 to 6 As shown, the present invention includes a mounting frame 3 and a cooler 2, wherein main coupling pipes 1 are provided on the upper and lower sides of the mounting frame 3, bent cooling coupling pipes 203 are provided on the upper and lower sides of the cooler 2, and the free ends of the cooling coupling pipes 203 are provided with connecting flanges connected to the main coupling pipes 1 on the corresponding side, and the above structure is a well-known technology in the art.

[0033] like Figures 1 to 6As shown, upper mounting brackets 301 are provided on both sides of the upper part of the mounting frame 3, lower mounting brackets 302 are provided on both sides of the lower part of the mounting frame 3, upper positioning brackets 201 are provided on both sides of the upper part of the cooler 2, and the upper positioning brackets 201 are fixedly connected to the upper mounting brackets 301 on the corresponding side through short screws 4 and nut assemblies 6, lower positioning brackets 202 are provided on both sides of the lower part of the cooler 2, and the lower positioning brackets 202 are fixedly connected to the lower mounting brackets 302 on the corresponding side through long screws 5 and nut assemblies 6.

[0034] like Figure 2 As shown, the upper positioning bracket 201 and the lower positioning bracket 202 are each provided with two positioning bowls 204 arranged back to back, and the short screw 4 and the long screw 5 are respectively arranged in the corresponding positioning bowls 204, as shown in FIG. Figure 3 As shown, the upper positioning bracket 201 and the lower positioning bracket 202 are both provided with mounting holes 206, and the short screw 4 and the long screw 5 pass through the corresponding mounting holes 206 respectively, and the inner wall of the positioning bowl 204 is inclined, that is, the diameter of the first positioning bowl edge 2041 on the inner side of the positioning bowl 204 close to the mounting hole 206 is smaller than the diameter of the second positioning bowl edge 2042 on the inner side of the positioning bowl 204 away from the mounting hole 206, and the diameter of the first positioning bowl edge 2041 matches the nut diameter in the nut assembly 6, so that the screw and the nut can slide relative to each other along the inclined surface to achieve rapid and accurate positioning. In addition, as shown in FIG. Figures 4 to 6 As shown, the lower end of the positioning bowl 204 is respectively supported against the upper mounting bracket 301 on the corresponding side or the lower mounting bracket 302 on the corresponding side, so that the weight of the cooler 2 can be dispersed and transmitted to the corresponding mounting bracket through each positioning bowl 204, thereby reducing the influence of the cooler 2's own weight and improving the load-bearing safety.

[0035] like Figures 4 to 6 As shown, in one embodiment of the present invention, the positioning bowl 204 is directly and integrally connected to the corresponding upper positioning bracket 201 or the lower positioning bracket 202. In another embodiment of the present invention, a mounting plate is provided on one side of the positioning bowl 204, and the mounting plate is fixed to the corresponding upper positioning bracket 201 or the lower positioning bracket 202 by bolts. In this way, the present invention can replace the positioning bowls 204 of different heights and inner diameters according to the specific specifications of the cooler 2 and the requirements of on-site installation, thereby improving the flexibility of use and the scope of application of the present invention.

[0036] Since the lower end of the cooler 2 needs to be positioned first during the process of hoisting and installing the cooler 2, the present invention sets a long screw 5 on the lower mounting bracket 302 of the mounting frame 3, so that during hoisting, the cooler 2 slowly descends, and the positioning bowl 204 on the lower positioning bracket 202 can be mounted on the corresponding long screw 5 as quickly as possible, thereby limiting the horizontal degree of freedom of the cooler 2 as quickly as possible, and then the cooler 2 can descend approximately vertically, and the positioning bowl 204 on the upper positioning bracket 201 can be quickly and accurately mounted on the corresponding short screw 4, thereby completely limiting the horizontal degree of freedom of the cooler 2.

[0037] like Figures 4-5 As shown, the upper mounting bracket 301 and the lower mounting bracket 302 are both provided with mounting plates 303, the upper positioning bracket 201 and the lower positioning bracket 202 are both provided with support plates 207, and the support plates 207 and the mounting plates 303 are both provided with the mounting holes 206, as shown in FIG. Figure 6 As shown, the nut assembly 6 includes a plurality of nuts, wherein the first nut 601 and the second nut 602 are arranged on the upper side of the corresponding support plate 207 from top to bottom, the third nut 603 is arranged on the lower side of the corresponding support plate 207, the fourth nut 604 is arranged on the upper side of the corresponding mounting plate 303, and the fifth nut 605 is arranged on the lower side of the corresponding mounting plate 303.

[0038] like Figures 4-5 As shown, in this embodiment, the upper positioning bracket 201 and the lower positioning bracket 202 have the same structure and both include a support plate 207 and a reinforcing rib plate 208, wherein the reinforcing rib plate 208 is vertically arranged in the middle of the corresponding support plate 207 and connected to the cooler 2 body, and two mounting holes 206 are respectively arranged on both sides of the reinforcing rib plate 208. Figure 2 As shown, the cooler 2 is provided with a plurality of sets of fans 205 .

[0039] The working principle of the present invention is:

[0040] The present invention comprises the following steps when used:

[0041] Step 1: If Figure 6 As shown, first use the fourth nut 604 and the fifth nut 605 to fix the short screw 4 on the corresponding upper mounting bracket 301, and at the same time use the fourth nut 604 and the fifth nut 605 to fix the long screw 5 on the corresponding lower mounting bracket 302. At this time, it should be noted that sufficient height must be left on the upper part of the long screw 5 to facilitate subsequent installation.

[0042] Step 2: Put the third nut 603 on the corresponding screw rod respectively, and the height between the third nut 603 and the fourth nut 604 needs to match the height of the corresponding positioning bowl 204 to facilitate subsequent adjustment.

[0043] Step three: Slowly lower the cooler 2 by a crane and move it into the mounting frame 3. Due to the limitation of the positioning brackets on both sides of the cooler 2, the cooler 2 needs to be tilted at a certain angle to enter the mounting frame 2, and then the installers on both sides assist in pushing the cooler 2 to rotate so that the upper positioning bracket 201 is respectively located above the upper mounting bracket 301 on the corresponding side, and the lower positioning bracket 202 is respectively located above the lower mounting bracket 302 on the corresponding side, and then the cooler 2 is released and slowly lowered by the crane.

[0044] Step 4: After the cooler 2 enters the installation frame 3, the cooler 2 is released by a crane and slowly descends, and the installers on both sides hold the cooler 2 so that the positioning bowl 204 on the lower side of the lower positioning bracket 202 is mounted on the long screw 5 on the corresponding side, and then the cooler 2 continues to descend, and the installers on both sides hold the cooler 2 so that the positioning bowl 204 on the lower side of the upper positioning bracket 201 is mounted on the short screw 4 on the corresponding side, and then the cooler 2 continues to descend until the lower end of the positioning bowl 204 is in contact with the corresponding installation bracket. At this time, the cooler 2 completely limits the horizontal degree of freedom through the cooperation of the short screw 4, the long screw 5 and each positioning bowl 204, and the self-weight of the cooler 2 is dispersed and transmitted to the corresponding installation bracket through each positioning bowl 204, thereby reducing the influence of the self-weight of the cooler 2 and improving the load-bearing safety.

[0045] Step 5: Put the first nut 601 and the second nut 602 on the corresponding screw rods respectively but do not tighten them, and then connect the cooling link pipes 203 on the upper and lower sides of the cooler 2 to the corresponding main link pipes 1. If the connecting flange of the cooling link pipe 203 cannot be aligned with the mounting screw holes on the main link pipe 1, the position of the cooler 2 in the height direction can be fine-tuned by adjusting the position of the corresponding nut in the screw rod assembly 6 until the connecting flange of the cooling link pipe 203 is aligned with the mounting screw holes on the main link pipe 1, thereby ensuring the accuracy of the installation position of the upper and lower cooling link pipes 203 of the cooler 2.

[0046] Step six: After the cooling coupling 203 is connected to the main coupling 1, tighten and fix the nuts in each group of nut assemblies 6, wherein the first nut 601 and the second nut 602 are double-nut pre-tightening structures to ensure secure fixation. After each nut is pre-tightened, the cooler 2 is installed and positioned.

[0047] In addition, in step one, the installer can first choose to replace the positioning bowl 204 with a suitable height and inner diameter according to actual needs. At this time, a mounting plate is provided on one side of the positioning bowl 204, and the mounting plate is connected to the corresponding upper positioning bracket 201 or lower positioning bracket 202 by bolts. After removing each bolt, the positioning bowl 204 can be replaced.

Claims

1. A transformer cooler installation and positioning structure, comprising a mounting frame and a cooler, wherein the mounting frame is provided with main connecting pipes on the upper and lower sides, the cooler is provided with bent cooling connecting pipes on the upper and lower sides, and the free ends of the cooling connecting pipes are provided with connecting flanges connected to the main connecting pipes on the corresponding sides, characterized in that: Upper mounting brackets (301) are provided on both sides of the upper part of the mounting frame (3), and lower mounting brackets (302) are provided on both sides of the lower part of the mounting frame (3). Upper positioning brackets (201) are provided on both sides of the upper part of the cooler (2), and the upper positioning brackets (201) are fixedly connected to the upper mounting brackets (301) on the corresponding side through short screws (4) and nut assemblies (6). Lower positioning brackets (202) are provided on both sides of the lower part of the cooler (2), and the lower positioning brackets (202) are fixedly connected to the lower mounting brackets (302) on the corresponding side through long screws (5) and nut assemblies (6). Positioning bowls (204) arranged back to back are provided on the upper positioning bracket (201) and the lower positioning bracket (202), and the short screws (4) and the long screws (5) are respectively arranged in the corresponding positioning bowls (204), and the inner walls of the positioning bowls (204) are inclined.

2. The transformer cooler installation and positioning structure according to claim 1, characterized in that: The upper mounting bracket (301) and the lower mounting bracket (302) are both provided with mounting plates (303), the upper positioning bracket (201) and the lower positioning bracket (202) are both provided with support plates (207), and the support plates (207) and the mounting plate (303) are both provided with mounting holes (206), the short screw rod (4) and the long screw rod (5) respectively pass through the corresponding mounting holes (206), and the nut assembly (6) comprises a plurality of nuts, wherein the first nut (601) and the second nut (602) are sequentially arranged on the upper side of the corresponding support plate (207) from top to bottom, the third nut (603) is arranged on the lower side of the corresponding support plate (207), the fourth nut (604) is arranged on the upper side of the corresponding mounting plate (303), and the fifth nut (605) is arranged on the lower side of the corresponding mounting plate (303).

3. The transformer cooler installation and positioning structure according to claim 2, characterized in that: The upper positioning bracket (201) and the lower positioning bracket (202) have the same structure and both include a support plate (207) and a reinforcing rib plate (208), wherein the reinforcing rib plate (208) is vertically arranged in the middle of the corresponding support plate (207) and connected to the cooler (2) body, and two mounting holes (206) are arranged on both sides of the reinforcing rib plate (208).

4. The transformer cooler installation and positioning structure according to claim 2, characterized in that: The diameter of a first positioning bowl edge (2041) on the inner side of the positioning bowl (204) close to the corresponding mounting hole (206) is smaller than the diameter of a second positioning bowl edge (2042) on the inner side of the positioning bowl (204) away from the corresponding mounting hole (206).

5. The transformer cooler installation and positioning structure according to claim 4, characterized in that: The diameter of the first positioning bowl edge (2041) matches the diameter of the nut in the nut assembly (6).

6. A method for installing the transformer cooler installation and positioning structure according to claim 2, characterized in that: The steps include: Step 1: Use the fourth nut (604) and the fifth nut (605) to fix the short screw (4) on the corresponding upper mounting bracket (301) and the long screw (5) on the corresponding lower mounting bracket (302); Step 2: The third nuts (603) are respectively mounted on the corresponding screw rods, and the height between the third nuts (603) and the corresponding fourth nuts (604) matches the height of the corresponding positioning bowls (204); Step 3: hoisting the cooler (2) into the mounting frame (3) by means of a crane, wherein the upper positioning bracket (201) is respectively located above the upper mounting bracket (301) on the corresponding side, and the lower positioning bracket (202) is respectively located above the lower mounting bracket (302) on the corresponding side; Step 4: The cooler (2) is lowered by releasing it through a crane, and the positioning bowl (204) on the lower side of the lower positioning bracket (202) is sleeved onto the long screw (5) on the corresponding side, and then the cooler (2) continues to descend, and the positioning bowl (204) on the lower side of the upper positioning bracket (201) is sleeved onto the short screw (4) on the corresponding side, and then the cooler (2) continues to descend until the lower end of the positioning bowl (204) contacts the corresponding mounting bracket; Step 5: respectively put the first nut (601) and the second nut (602) on the corresponding screw rods but do not tighten them, and then connect the cooling coupling pipes (203) on the upper and lower sides of the cooler (2) to the corresponding main coupling pipes (1). If the connecting flange of the cooling coupling pipe (203) cannot be aligned with the mounting screw holes on the main coupling pipe (1), fine-tune the height position of the cooler (2) by adjusting the position of the corresponding nut in the screw rod assembly (6) until the connecting flange of the cooling coupling pipe (203) is aligned with the mounting screw holes on the main coupling pipe (1) and connected; Step 6: After the cooling connecting pipe (203) is connected to the main connecting pipe (1), the nuts in each set of nut assemblies (6) are tightened and fixed.

7. The installation method of the transformer cooler installation and positioning structure according to claim 6, characterized in that: In step one, the specification of the positioning bowl (204) is first selected and determined. A mounting plate is provided on one side of the positioning bowl (204), and the mounting plate is connected to the corresponding positioning bracket by bolts.

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