Transformer cooler mounting positioning structure and mounting method

Abstract

The present application relates to a kind of transformer cooler installation positioning structure and installation method, wherein the upper portion of installation frame body is equipped with upper installation support on both sides, the lower portion of installation frame body is equipped with lower installation support on both sides, the upper portion of cooler is equipped with upper positioning support on both sides, and the upper positioning support is fixedly connected with the upper installation support of corresponding side by short screw rod and nut assembly, the lower portion of cooler is equipped with lower positioning support on both sides, and the lower positioning support is fixedly connected with the lower installation support of corresponding side by long screw rod and nut assembly, the upper positioning support and lower positioning support are all equipped with positioning bowl arranged in back-to-back, and the short screw rod and long screw rod are respectively arranged in corresponding positioning bowl, and the inner wall of positioning bowl is inclined surface.The present application improves the safety of cooler bearing, and ensures the accuracy of upper and lower cooling header installation position of cooler, thereby avoiding the problem that the bending moment of cooling header is too large, improves installation efficiency and also ensures installation quality.

Description

Technical Field

[0001] This invention relates to the field of transformer manufacturing, and more specifically to a transformer cooler installation and positioning structure and installation method. Background Technology

[0002] like Figure 1 As shown, the existing installation and positioning structure for transformer coolers is distributed on the upper and lower sides, with a total of four positioning brackets. Each positioning bracket uses two screws and nuts for connection. Both the cooler bracket and the mounting frame have elongated holes, the width of which is larger than the screw size. While the existing structure can ensure horizontal positioning of the cooler, in the vertical direction, relying solely on the tightening of screws and nuts cannot guarantee the accuracy of the installation positions of the upper and lower cooling pipes and the main connecting pipe. Furthermore, due to the cooler's own weight and the excessively large opening size, in actual production, significant bending deformation of the connecting nut washers and screw sinking frequently occur. This leads to cooler sinking, and the aforementioned factors also cause excessive bending moments in the upper and lower cooling pipes. Excessive bending moments in the cooling pipes can easily lead to poor sealing of the connecting flanges, resulting in oil leaks and air entering the transformer body, posing a significant safety hazard to the safe operation of the transformer. Summary of the Invention

[0003] The purpose of this invention is to provide a transformer cooler installation positioning structure and installation method. This structure allows the cooler's own weight to be distributed and transmitted to the corresponding mounting brackets through each positioning bowl, improving load-bearing safety and ensuring the accuracy of the installation position of the upper and lower cooling pipes of the cooler. This avoids problems such as excessive bending moment in the cooling pipes, improves installation efficiency, and ensures installation quality.

[0004] The objective of this invention is achieved through the following technical solution: A transformer cooler mounting and positioning structure includes a mounting frame and a cooler. The mounting frame has main connecting pipes on its upper and lower sides, and the cooler has bent cooling connecting pipes on its upper and lower sides. The free ends of the cooling connecting pipes are connected to the corresponding main connecting pipes via connecting flanges. The mounting frame has upper mounting brackets on both upper sides and lower mounting brackets on both lower sides. The cooler has upper positioning brackets on both upper sides, which are fixedly connected to the corresponding upper mounting brackets via short screws and nuts. The cooler has lower positioning brackets on both lower sides, which are fixedly connected to the corresponding lower mounting brackets via long screws and nuts. Both the upper and lower positioning brackets have back-to-back positioning bowls, with the short and long screws respectively positioned within the corresponding positioning bowls. The inner walls of the positioning bowls are inclined.

[0005] Both the upper and lower mounting brackets are provided with mounting plates, and both the upper and lower positioning brackets are provided with support plates. Both the support plates and mounting plates are provided with mounting holes. The short screw and the long screw pass through the corresponding mounting holes. The nut assembly includes multiple nuts, wherein the first nut and the second nut are arranged sequentially from top to bottom on the upper side of the corresponding support plate, 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.

[0006] The upper positioning bracket and the lower positioning bracket have the same structure and both include a support plate and a reinforcing rib plate. The reinforcing rib plate is vertically arranged in the middle of the corresponding support plate and connected to the cooler body. Two mounting holes are respectively arranged on both sides of the reinforcing rib plate.

[0007] The diameter of the first positioning bowl edge, which is closer to the corresponding mounting hole on the inner side of the positioning bowl, is smaller than the diameter of the second positioning bowl edge, which is farther away from the corresponding mounting hole on the inner side of the positioning bowl.

[0008] The diameter of the edge of the first positioning bowl matches the diameter of the nut in the nut assembly.

[0009] An installation method based on the aforementioned transformer cooler mounting and positioning structure includes the following steps: Step 1: Use the fourth nut and the fifth nut to fix the short screw to the corresponding upper mounting bracket and the long screw to the corresponding lower mounting bracket respectively; Step 2: Install the third nut onto the corresponding screw, and ensure that the height between the third nut and the corresponding fourth nut matches the height of the corresponding positioning cup; Step 3: The cooler is hoisted into the mounting frame by a crane, with the upper positioning brackets located above the upper mounting brackets on the corresponding sides and the lower positioning brackets located above the lower mounting brackets on the corresponding sides. Step 4: The cooler is lowered by the crane, and the positioning cup on the lower side of the lower positioning bracket is fitted onto the long screw on the corresponding side. Then the cooler continues to descend, and the positioning cup on the lower side of the upper positioning bracket is fitted onto the short screw on the corresponding side. Then the cooler continues to descend until the lower end of the positioning cup contacts the corresponding mounting bracket. Step 5: Set the first nut and the second nut onto the corresponding screws but do not tighten them. Then connect the cooling pipes on the upper and lower sides of the cooler to the corresponding main pipes. If the connecting flange of the cooling pipe cannot be aligned with the mounting screw hole on the main pipe, adjust the position of the cooler in the height direction by adjusting the position of the corresponding nut in the nut assembly until the connecting flange of the cooling pipe is aligned with the mounting screw hole on the main pipe. Step Six: After connecting the cooling pipe to the main pipe, tighten the nuts in each set of nut assemblies to secure them.

[0010] In step one, the specifications of the positioning bowl are first selected and determined. The positioning bowl has a mounting plate on one side, and the mounting plate is connected to the corresponding positioning bracket by bolts.

[0011] The advantages and positive effects of this invention are as follows: 1. This invention distributes the weight of the cooler to the corresponding mounting brackets through each positioning cup, thereby improving load-bearing safety.

[0012] 2. In this invention, a long screw is installed on the lower mounting bracket of the mounting frame. This allows the cooler to descend slowly during hoisting, and the positioning cup on the lower positioning bracket of the cooler can be quickly fitted onto the corresponding long screw, limiting the horizontal degree of freedom of the cooler. Then, the cooler can descend approximately vertically, and the positioning cup on the upper positioning bracket can be quickly and accurately fitted onto the corresponding short screw to completely limit the horizontal degree of freedom of the cooler. This not only ensures the positioning accuracy of the positioning cup but also reduces installation time and improves installation efficiency.

[0013] 3. The inner wall of the positioning bowl of the present invention is inclined, so that during hoisting and installation, the screw and nut can slide relative to each other along the inclined surface to achieve fast and accurate positioning, which can further improve the installation efficiency of the present invention.

[0014] 4. An installation plate can be provided on one side of the positioning bowl of the present invention. The installation plate is connected to the corresponding positioning bracket on the cooler by bolts. In this way, the positioning bowl with appropriate height and inner diameter can be replaced according to actual needs, thereby improving the flexibility and applicability of the present invention.

[0015] 5. During hoisting and installation, if the cooling connecting pipes on the upper and lower sides of the cooler cannot be aligned with the corresponding main connecting pipes after each positioning bowl comes into contact with the corresponding mounting bracket, the position of the cooler in the height direction can be finely adjusted by adjusting the position of the corresponding nuts in the nut assembly until the connecting flange of the cooling connecting pipe is aligned with the mounting screw hole on the main connecting pipe, thereby ensuring the accuracy of the installation position of the upper and lower cooling connecting pipes of the cooler. Attached Figure Description

[0016] Figure 1 This is a schematic diagram illustrating the usage state of the present invention. Figure 2 for Figure 1 Schematic diagram of the intercooler Figure 3 for Figure 2 Enlarged diagram of the center positioning bowl. Figure 4 for Figure 1 A schematic diagram of the positioning structure on the positioning bracket of the intercooler. Figure 5 for Figure 1 Schematic diagram of the positioning structure on the lower positioning bracket of the intercooler. Figure 6 for Figure 5 Front view of the positioning structure on the lower positioning bracket.

[0017] 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 edge of the first positioning bowl, 2042 is the edge of the second positioning bowl, 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 Implementation

[0018] The invention will now be described in further detail with reference to the accompanying drawings.

[0019] like Figures 1-6 As shown, the present invention includes a mounting frame 3 and a cooler 2. The mounting frame 3 is provided with a main connecting pipe 1 on both the upper and lower sides. The cooler 2 is provided with a bent cooling connecting pipe 203 on both the upper and lower sides. The free end of the cooling connecting pipe 203 is provided with a connecting flange that connects to the main connecting pipe 1 on the corresponding side. The above structure is a well-known technology in the art.

[0020] like Figures 1-6 As shown, the upper mounting brackets 301 are provided on both sides of the upper part of the mounting frame 3, and the lower mounting brackets 302 are provided on both sides of the lower part of the mounting frame 3. The 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 corresponding upper mounting brackets 301 through short screws 4 and nut assemblies 6. The 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 corresponding lower mounting brackets 302 through long screws 5 and nut assemblies 6.

[0021] like Figure 2 As shown, both the upper positioning bracket 201 and the lower positioning bracket 202 are provided with two positioning bowls 204 arranged back to back, and the short screw 4 and the long screw 5 are respectively located in the corresponding positioning bowls 204, as shown. Figure 3As shown, both the upper positioning bracket 201 and the lower positioning bracket 202 are provided with mounting holes 206, and the short screw 4 and the long screw 5 pass through the corresponding mounting holes 206 respectively. The inner wall of the positioning bowl 204 is inclined, that is, the diameter of the first positioning bowl edge 2041 near the mounting hole 206 on the inner side of the positioning bowl 204 is smaller than the diameter of the second positioning bowl edge 2042 away from the mounting hole 206 on the inner side of the positioning bowl 204. Furthermore, the diameter of the first positioning bowl edge 2041 matches the diameter of the nut in the nut assembly 6. In this way, the screw and the nut can slide relative to each other along the inclined surface to achieve fast and accurate positioning. In addition, as shown in the figure... Figures 4-6 As shown, the lower end of the positioning bowl 204 is supported by the upper mounting bracket 301 or the lower mounting bracket 302 on the corresponding side, so that the weight of the cooler 2 can be distributed and transmitted to the corresponding mounting bracket through each positioning bowl 204, thereby reducing the impact of the cooler 2's own weight and improving the load-bearing safety.

[0022] like Figures 4-6 As shown, in one embodiment of the present invention, the positioning bowl 204 is directly and integrally fixed to the corresponding upper positioning bracket 201 or 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 lower positioning bracket 202 by bolts. In this way, the present invention can replace the positioning bowl 204 with different heights and inner diameters according to the specific specifications of the cooler 2 and the on-site installation requirements, thereby improving the flexibility and applicability of the present invention.

[0023] Since the lower end of the cooler 2 needs to be positioned first during the hoisting and installation process, the present invention provides a long screw 5 on the lower mounting bracket 302 of the mounting frame 3. In this way, during hoisting, the cooler 2 descends slowly, and the positioning cup 204 on the lower positioning bracket 202 can be quickly fitted onto the corresponding long screw 5, thereby quickly limiting the horizontal degree of freedom of the cooler 2. Then the cooler 2 can descend approximately vertically, and the positioning cup 204 on the upper positioning bracket 201 can be quickly and accurately fitted onto the corresponding short screw 4, thereby completely limiting the horizontal degree of freedom of the cooler 2.

[0024] like Figures 4-5 As shown, both the upper mounting bracket 301 and the lower mounting bracket 302 are provided with mounting plates 303, and both the upper positioning bracket 201 and the lower positioning bracket 202 are provided with support plates 207. Furthermore, both the support plates 207 and the mounting plates 303 are provided with mounting holes 206. Figure 6As shown, the nut assembly 6 includes a plurality of nuts, wherein the first nut 601 and the second nut 602 are arranged from top to bottom on the upper side of the corresponding support plate 207, 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.

[0025] 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. The reinforcing rib plate 208 is vertically disposed in the middle of the corresponding support plate 207 and connected to the main body of the cooler 2. Two mounting holes 206 are respectively disposed on both sides of the reinforcing rib plate 208. Figure 2 As shown, the cooler 2 is equipped with multiple sets of fans 205.

[0026] The working principle of this invention is as follows: The use of this invention includes the following steps: Step 1: As Figure 6 As shown, first use the fourth nut 604 and the fifth nut 605 to fix the short screw 4 to 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 to the corresponding lower mounting bracket 302. At this time, it is necessary to note that the upper part of the long screw 5 should be left with sufficient height to facilitate subsequent installation.

[0027] Step 2: Install the third nut 603 onto the corresponding screw, and the height between the third nut 603 and the fourth nut 604 needs to match the height of the corresponding positioning cup 204 to facilitate subsequent adjustment.

[0028] Step 3: The cooler 2 is slowly lowered and moved into the mounting frame 3 by a crane. Due to the limitations of the positioning brackets on both sides of the cooler 2, the cooler 2 needs to be tilted into the mounting frame 3 at a certain angle first. Then, the installers on both sides help to push the cooler 2 to rotate so that the upper positioning bracket 201 is above the upper mounting bracket 301 on the corresponding side, and the lower positioning bracket 202 is above the lower mounting bracket 302 on the corresponding side. Then the cooler 2 is slowly lowered by the crane.

[0029] Step 4: After the cooler 2 enters the mounting frame 3, the cooler 2 is slowly lowered by a crane. Personnel on both sides support the cooler 2 so that the positioning bowl 204 on the lower side of the lower positioning bracket 202 is fitted onto the corresponding long screw 5. The cooler 2 continues to descend, and personnel on both sides support it so that the positioning bowl 204 on the lower side of the upper positioning bracket 201 is fitted onto the corresponding short screw 4. The cooler 2 continues to descend until the lower end of the positioning bowl 204 contacts the corresponding mounting bracket. At this point, the cooler 2's horizontal freedom is completely limited by the cooperation of the short screw 4, long screw 5, and each positioning bowl 204. Furthermore, the cooler 2's own weight is distributed and transmitted to the corresponding mounting bracket through each positioning bowl 204, thereby reducing the impact of the cooler 2's own weight and improving load-bearing safety.

[0030] Step 5: Place the first nut 601 and the second nut 602 onto the corresponding screws, but do not tighten them. Then connect the cooling pipes 203 on the upper and lower sides of the cooler 2 to the corresponding main pipes 1. If the connecting flange of the cooling pipe 203 cannot be aligned with the mounting screw holes on the main pipe 1, the position of the cooler 2 in the height direction can be finely adjusted by adjusting the position of the corresponding nut in the nut assembly 6 until the connecting flange of the cooling pipe 203 is aligned with the mounting screw holes on the main pipe 1, thereby ensuring the accuracy of the installation position of the upper and lower cooling pipes 203 of the cooler 2.

[0031] Step 6: After the cooling pipe 203 is connected to the main pipe 1, tighten the nuts in each set of nut assemblies 6 to fix it. The first nut 601 and the second nut 602 are double nut pre-tightening structures to ensure a secure fixation. After each nut is pre-tightened, the cooler 2 is installed and positioned.

[0032] In step one, the installer can first select and replace the positioning bowl 204 with a suitable height and inner diameter according to the actual needs. At this time, the positioning bowl 204 is provided with a mounting plate on one side, 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 both the upper and lower sides, and the cooler is provided with bent cooling connecting pipes on both the upper and lower sides, and the free end of each cooling connecting pipe is provided with a connecting flange that connects to the corresponding main connecting pipe, characterized in that: The upper two sides of the mounting frame (3) are provided with upper mounting brackets (301), the lower two sides of the mounting frame (3) are provided with lower mounting brackets (302), the upper two sides of the cooler (2) are provided with upper positioning brackets (201), and the upper positioning brackets (201) are fixedly connected to the upper mounting brackets (301) on the corresponding side by short screws (4) and nut assembly (6). The lower two sides of the cooler (2) are provided with lower positioning brackets (202), and the lower positioning brackets (202) are fixedly connected to the lower mounting brackets (302) on the corresponding side by long screws (5) and nut assembly (6). The upper positioning brackets (201) and the lower positioning brackets (202) are provided with positioning bowls (204) arranged back to back, and the short screws (4) and the long screws (5) are respectively located in the corresponding positioning bowls (204). The inner wall of the positioning bowls (204) is inclined. The upper mounting bracket (301) and the lower mounting bracket (302) are each provided with a mounting plate (303), the upper positioning bracket (201) and the lower positioning bracket (202) are each provided with a support plate (207), and the support plate (207) and the mounting plate (303) are each provided with a mounting hole (206). The short screw (4) and the long screw (5) pass through the corresponding mounting holes (206) respectively. The nut assembly (6) includes a plurality of nuts, wherein the first nut (601) and the second nut (602) are arranged from top to bottom on the upper side of the corresponding support plate (207), 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). The positioning bowl (204) is located between the corresponding mounting plate (303) and support plate (207).

2. The transformer cooler installation and positioning structure according to claim 1, 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). The reinforcing rib plate (208) is vertically disposed in the middle of the corresponding support plate (207) and connected to the main body of the cooler (2). Two mounting holes (206) are respectively disposed on both sides of the reinforcing rib plate (208).

3. The transformer cooler installation and positioning structure according to claim 1, characterized in that: The diameter of the first positioning bowl edge (2041) on the inner side of the positioning bowl (204) near the corresponding 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 corresponding mounting hole (206).

4. The transformer cooler installation and positioning structure according to claim 3, characterized in that: The diameter of the first positioning bowl edge (2041) matches the diameter of the nut in the nut assembly (6).

5. An installation method for the transformer cooler mounting and positioning structure according to claim 1, characterized in that: Includes the following steps: Step 1: Use the fourth nut (604) and the fifth nut (605) to fix the short screw (4) to the corresponding upper mounting bracket (301) and the long screw (5) to the corresponding lower mounting bracket (302); Step 2: Install the third nut (603) onto the corresponding screw, and the height between the third nut (603) and the corresponding fourth nut (604) matches the height of the corresponding positioning cup (204); Step 3: The cooler (2) is hoisted into the mounting frame (3) by a crane, wherein the upper positioning bracket (201) is located above the upper mounting bracket (301) on the corresponding side, and the lower positioning bracket (202) is located above the lower mounting bracket (302) on the corresponding side. Step 4: The cooler (2) is released and lowered by the crane, and the positioning bowl (204) on the lower side of the lower positioning bracket (202) is fitted onto the long screw (5) on the corresponding side. Then the cooler (2) continues to descend, and the positioning bowl (204) on the lower side of the upper positioning bracket (201) is fitted onto the short screw (4) on the corresponding side. Then the cooler (2) continues to descend until the lower end of the positioning bowl (204) abuts against the corresponding mounting bracket. Step 5: Set the first nut (601) and the second nut (602) onto the corresponding screws but do not tighten them. Then connect the cooling pipes (203) on the upper and lower sides of the cooler (2) to the corresponding main pipes (1). If the connecting flange of the cooling pipe (203) cannot be aligned with the mounting screw hole on the main pipe (1), adjust the position of the cooler (2) in the height direction by adjusting the position of the corresponding nut in the nut assembly (6) until the connecting flange of the cooling pipe (203) is aligned with the mounting screw hole on the main pipe (1). Step 6: After the cooling pipe (203) is connected to the main pipe (1), tighten the nuts in each set of nut assemblies (6) to fix them.

6. The installation method of the transformer cooler mounting and positioning structure according to claim 5, characterized in that: In step one, the specifications of the positioning bowl (204) are first selected and determined. The positioning bowl (204) has a mounting plate on one side, and the mounting plate is connected to the corresponding positioning bracket by bolts.

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