Bonding and positioning tool for insulating tube bus mounting flange

Abstract

The utility model relates to the technical field of insulating tubular buses, in particular to an insulating tubular bus mounting flange bonding positioning tool which comprises a positioning mechanism and a pressing plate, the positioning mechanism comprises a pipe barrel, a positioning end plate and a positioning annular plate, the positioning end plate is fixed at one end of the pipe barrel, and the positioning annular plate is fixed at the other end of the pipe barrel. The positioning end plate is positioned and assembled with the end part of the insulating tube bus through the end plate positioning groove, the positioning ring plate is fixed at the other end of the tube barrel, and the positioning ring plate is positioned and assembled with the mounting flange through the ring plate positioning groove; the installation flange is arranged on the bus body in a sleeving mode, the pressing plate is arranged at the opening end of the annular plate positioning groove and tightly presses the installation flange, the pressing plate and the positioning annular plate are connected and fixed through bolts, the degree of freedom of the installation flange in all directions is limited through the positioning mechanism and the pressing plate, and the position requirement of the installation flange is determined through the positioning tool. The skill requirement on operators is low, the positioning is accurate, and the efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of insulated tube busbar technology, specifically to an insulated tube busbar mounting flange bonding and positioning fixture and its bonding method. Background Technology

[0002] To reduce size and floor space, switchgear typically uses gas-insulated switchgear. Gas-insulated switchgear requires lead-out lines to connect the main transformer to the switchgear and other equipment. When epoxy resin vacuum-impregnated paper solid-insulated tubular busbars are used as lead-out lines for gas-insulated switchgear, the busbar body usually needs to be bonded to mounting flanges for fixing to the switchgear. The bonding position of these mounting flanges has strict dimensional and positional requirements.

[0003] The current bonding method involves the operator first inserting a wooden plug or clip between the mounting flange and the busbar body, pre-installing the mounting flange in the approximate position of the busbar, and then adjusting it to achieve the ideal position. However, the mounting flange generally has various dimensional and positional requirements, such as perpendicularity, parallelism, and coaxiality. Adjusting one of these requirements will cause changes in other factors. Even with repeated adjustments, it is difficult to meet the technical requirements, resulting in low efficiency, large errors, and high skill requirements for the operator. Utility Model Content

[0004] In view of the deficiencies of the existing technology, the purpose of this utility model is to provide an adhesive positioning tool for mounting flanges of insulated busbars, which can conveniently and accurately determine the position of the mounting flange.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an insulated busbar mounting flange bonding and positioning fixture, comprising a positioning mechanism and a pressure plate. The positioning mechanism includes a tube, a positioning end plate, and a positioning ring plate. The positioning end plate is fixed to one end of the tube and is positioned and assembled with the end of the insulated busbar through a positioning groove. The positioning ring plate is fixed to the other end of the tube and is positioned and assembled with the mounting flange through a positioning groove. The mounting flange is fitted onto the busbar body, and the pressure plate is set at the open end of the positioning groove of the ring plate and presses the mounting flange tightly. The pressure plate and the positioning ring plate are fixedly connected by bolts.

[0006] Furthermore, the positioning end plate is positioned and assembled with the contact terminal at the end of the insulating tube busbar through the end plate positioning groove. The contact terminal is welded to the copper tube and is part of the conductor. The conductor is covered with an epoxy resin insulation layer. The conductor and the insulation layer constitute the busbar body of the insulating tube busbar.

[0007] Furthermore, the contact terminal is formed by machining a copper rod.

[0008] Based on the above technical solution, the positioning groove of the end plate and the positioning assembly of the contact terminal ensure that the axis of the positioning mechanism coincides with the axis of the insulating tube busbar. The positioning groove of the ring plate and the positioning assembly of the mounting flange ensure that the axis of the positioning mechanism coincides with the axis of the mounting flange. The two positioning grooves of the positioning mechanism ensure that the axis of the mounting flange coincides with the axis of the insulating tube busbar. The positioning groove of the ring plate and the pressure plate restrict the degree of freedom of the mounting flange in all directions, thereby ensuring the parallelism and coaxiality of the mounting flange bonding.

[0009] Furthermore, the positioning end plate of the positioning mechanism and the contact terminal of the insulating tube busbar are provided with corresponding connecting threaded holes and are fixed by connecting bolts.

[0010] Furthermore, the two ends of the tube are welded to the positioning end plate and the positioning ring plate, respectively.

[0011] Furthermore, the positioning mechanism has an observation window on its tube for observing the adhesive injection process.

[0012] Furthermore, the observation window is an axially elongated groove opened on the side wall of the tube. Three to five observation windows are evenly arranged along the circumference of the tube to facilitate observation of the adhesive injection from various angles and avoid blind spots.

[0013] Furthermore, the pressure plate is a ring structure formed by combining two semi-circular pressure plates. Multiple pressure plate through holes are evenly arranged along the circumference of the pressure plate. The pressure plate through holes correspond one-to-one with the positioning ring plate through holes on the positioning ring plate. The pressure plate and the positioning ring plate are fastened by a bolt group formed by bolts, nuts, flat washers and spring washers.

[0014] Preferably, both the pressure plate through holes and the positioning ring plate through holes are six in total, with three pressure plate through holes provided on each split pressure plate.

[0015] Furthermore, the mounting flange includes a flange tube and a flange flange disc at one end of the flange tube, and the annular plate positioning groove is positioned and assembled with the flange flange disc of the mounting flange; an M10 injection hole is provided on the side surface of the flange tube, and the injection hole is used to inject adhesive for bonding the mounting flange between the inner wall of the mounting flange and the outer wall of the busbar body.

[0016] Furthermore, when injecting adhesive between the mounting flange and the busbar body for bonding, a heat shrink tube is fitted at the connection point between the end of the mounting flange away from the positioning mechanism and the busbar body. The heat shrink tube is shrunk and sealed over the mounting flange and the busbar body by an open flame. The heat shrink tube at the end of the mounting flange away from the positioning mechanism and the heat shrink tube of the busbar body are respectively fastened by hose clamps.

[0017] The method for bonding flanges to insulated busbars includes the following steps:

[0018] Step 1: Install the mounting ring and mounting flange of the insulated busbar onto the busbar body;

[0019] Step 2: Fix the positioning mechanism to one end of the busbar body using connecting bolts; the positioning mechanism includes a tube, a positioning end plate, and a positioning ring plate. The positioning end plate is fixed to one end of the tube and is positioned and assembled with the contact terminal of the insulated busbar through the end plate positioning groove. The positioning ring plate is fixed to the other end of the tube and is positioned and assembled with the mounting flange through the ring plate positioning groove.

[0020] Step 3: Assemble the pressure plate onto the open end of the positioning groove of the ring plate, connect the pressure plate to the positioning ring plate of the positioning mechanism, and tighten and fix the mounting flange.

[0021] Step 4: Inject adhesive into the injection hole of the mounting flange, so that the adhesive is poured between the outer surface of the busbar body and the inner surface of the mounting flange.

[0022] Step 5: Let the insulating busbar stand still to allow the adhesive to cure, then bond the mounting flange to the busbar body.

[0023] Step 6: Remove the pressure plate and positioning mechanism.

[0024] Further, in step one, the mounting flange includes a flange pipe and a flange flange plate at one end of the flange pipe. First, the mounting pressure ring is fitted onto the busbar body from the mounting end of the busbar body, and then the mounting flange is fitted onto the busbar body from the mounting end of the busbar body. The flange flange plate of the mounting flange is close to the mounting end of the busbar body.

[0025] Based on the above technical solution, the installation end of the busbar body is one end of the busbar body installation and positioning mechanism.

[0026] Furthermore, in step two, the positioning end plate of the positioning mechanism and the contact terminal of the insulating tube busbar are provided with corresponding connecting threaded holes and are connected and fixed by the connecting bolts; the tube, the positioning end plate and the positioning ring plate are connected by welding; the positioning groove of the ring plate is positioned and assembled with the flange flange of the mounting flange.

[0027] Furthermore, in step three, the pressure plate is a ring structure formed by combining two semi-circular pressure plates. Multiple pressure plate through holes are evenly arranged along the circumference of the pressure plate. The pressure plate through holes correspond one-to-one with the positioning ring plate through holes on the positioning ring plate. The pressure plate and the positioning ring plate are fastened by a bolt group formed by bolts, nuts, flat washers and spring washers.

[0028] Furthermore, step four includes the following steps:

[0029] a. Use heat shrink tubing to seal the lower end of the mounting flange to the busbar body and tighten it with hose clamps to prevent material leakage at the lower end during injection.

[0030] b. Screw the injection nozzle into the injection hole on the side surface of the mounting flange, and connect the injection pipe to the injection nozzle;

[0031] c. Place the insulated busbar with the flange opening facing upwards and the shrink-sealed end facing downwards.

[0032] d. Inject adhesive into the injection tube using a glue gun.

[0033] Furthermore, in step a, the heat shrink tubing is heat-shrinked over an open flame; a hose clamp is installed at the lower end of the mounting flange, and a hose clamp is installed on the busbar body, with the hose clamp installed outside the heat shrink tubing.

[0034] Furthermore, in step five, after the adhesive has cured, remove the hose clamp and cut off the injection nozzle along the surface of the mounting flange.

[0035] Furthermore, in step five, the insulated busbar is left to stand for 24 hours.

[0036] Furthermore, an observation window is provided on the tube of the positioning mechanism to observe the injection status of the adhesive.

[0037] Furthermore, when the insulated busbar is installed into the switchgear, the mounting flange after being bonded with a pressure ring is pressed and connected to the switchgear to fix the mounting flange to the switchgear.

[0038] The beneficial effects of this utility model are as follows: the positioning mechanism and pressure plate restrict the freedom of the mounting flange in all directions, the position requirements of the mounting flange are determined by the positioning fixture, the positioning is accurate, the efficiency is high, and the skill requirements of the operator are low. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the positioning fixture;

[0040] Figure 2 for Figure 1 AA section view;

[0041] Figure 3 for Figure 2 Cross-sectional view of the positioning mechanism structure;

[0042] Figure 4 This is a schematic diagram of a split pressure plate structure;

[0043] Figure 5 A schematic diagram showing the assembly before installing the pressure ring and mounting flange;

[0044] Figure 6 A schematic diagram showing the installation of the pressure ring and mounting flange onto the insulating busbar;

[0045] Figure 7 A schematic diagram of the pressure plate and positioning mechanism before assembly;

[0046] Figure 8 A schematic diagram of the positioning mechanism being assembled onto the insulated busbar;

[0047] Figure 9 A schematic diagram showing the positioning mechanism and mounting flange in place.

[0048] Figure 10 A schematic diagram showing the injection of adhesive into the injection port of the mounting flange;

[0049] Figure 11 A schematic diagram showing the completed flange bonding installation (after removing the pressure plate and positioning mechanism);

[0050] Figure 12 Diagram showing the fit between the mounting ring and the mounting flange when installing insulated busbars into the switchgear;

[0051] In the picture:

[0052] 1. Positioning mechanism; 101. Positioning end plate; 1011. End plate positioning groove; 102. Tube; 1021. Observation window; 103. Positioning ring plate; 1031. Ring plate positioning groove; 1032. Positioning ring plate through hole;

[0053] 2. Pressure plate, 201. Pressure plate through hole;

[0054] 3. Insulated busbar; 301. Contact terminal; 302. Copper tube; 303. Insulation layer;

[0055] 4. Install flanges: 401. Flange flange plate; 402. Flange pipe;

[0056] 5. Install the pressure ring, 501, assembly hole;

[0057] 6. Connecting bolts;

[0058] 7. Bolt assembly;

[0059] 8. Adhesive;

[0060] 901. Heat shrink tubing; 902. Hose clamp; 903. Injection nozzle; 904. Injection tube. Detailed Implementation

[0061] To make the structure and function of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0062] See appendix Figure 1-11A mounting flange bonding and positioning fixture for an insulated busbar includes a positioning mechanism 1 and a pressure plate 2. The positioning mechanism 1 includes a tube 102, a positioning end plate 101, and a positioning ring plate 103. The positioning end plate 101 is welded and fixed to one end of the tube 102. The positioning end plate 101 is positioned and assembled with the contact terminal 301 of the insulated busbar through the end plate positioning groove 1011. The positioning ring plate 103 is welded and fixed to the other end of the tube 102. The positioning ring plate 103 is positioned and assembled with the mounting flange 4 through the ring plate positioning groove 1031. The mounting flange 4 is fitted onto the busbar body. The pressure plate 2 is set at the open end of the ring plate positioning groove 1031 and presses the mounting flange 4 tightly. The pressure plate 2 and the positioning ring plate 103 are connected and fixed by bolts.

[0063] Based on the above technical solution, the positioning assembly of the end plate positioning groove 1011 and the contact terminal 301 ensures that the axis of the positioning mechanism 1 coincides with the axis of the insulating tube busbar 3. The positioning assembly of the ring plate positioning groove 1031 and the mounting flange 4 ensures that the axis of the positioning mechanism 1 coincides with the axis of the mounting flange 4. The two positioning grooves of the positioning mechanism ensure that the axis of the mounting flange 4 coincides with the axis of the insulating tube busbar 3. The ring plate positioning groove 1031 and the pressure plate 2 restrict the degrees of freedom of the mounting flange in various directions, thereby ensuring the parallelism and coaxiality of the mounting flange bonding.

[0064] Furthermore, the contact terminal 301 is formed by machining a copper rod. The contact terminal 301 is welded to the copper tube 302 and is part of the conductor. The conductor is covered with an epoxy resin insulation layer 303. The conductor and the insulation layer constitute the busbar body. The positioning end plate 101 of the positioning mechanism and the contact terminal 301 of the insulating tube busbar are provided with corresponding connecting threaded holes and are connected and fixed by the connecting bolts 6.

[0065] Furthermore, the tube 102 of the positioning mechanism is provided with an observation window 1021 for observing the adhesive injection. The observation window 1021 is an axial long groove opened on the side wall of the tube 102. 3-5 observation windows are evenly arranged along the circumference of the tube to facilitate observation of the adhesive injection from various angles and avoid blind spots.

[0066] Furthermore, the pressure plate 2 is a ring structure formed by combining two semi-circular pressure plates. Six pressure plate through holes 201 are evenly arranged along the circumference of the pressure plate 2. The pressure plate through holes 201 correspond one-to-one with the positioning ring plate through holes 1032 on the positioning ring plate 103. Each split pressure plate is provided with three pressure plate through holes. The pressure plate 2 and the positioning ring plate 103 are fastened by a bolt group 7 formed by bolts, nuts, flat washers and spring washers. The bolts pass through the corresponding pressure plate through holes and positioning ring plate through holes and are locked by nuts.

[0067] Furthermore, the mounting flange includes a flange tube 402 and a flange flange plate 401 at one end of the flange tube 402. The annular plate positioning groove 1031 is positioned and assembled with the flange flange plate 401 of the mounting flange. An M10 injection hole is provided on the side surface of the flange tube 402. The injection hole is used to inject adhesive for bonding the mounting flange between the inner wall of the mounting flange and the outer wall of the busbar body.

[0068] Furthermore, when the mounting flange 4 and the busbar body are bonded by injecting adhesive, a heat shrink tube 901 is fitted at the connection between the end of the mounting flange 4 away from the positioning mechanism 1 and the busbar body. The heat shrink tube 901 is covered by open flame shrink sealing on the mounting flange 4 and the busbar body. The end of the mounting flange away from the positioning mechanism and the heat shrink tube of the busbar body are respectively fastened by hose clamps 902.

[0069] See Figures 5-11 The bonding method using the above-mentioned insulating conduit busbar mounting flange bonding and positioning fixture includes the following steps:

[0070] Step 1: Install the mounting ring 5 and mounting flange 4 of the insulated busbar onto the busbar body in sequence. First, install the mounting ring 5 onto the busbar body from the mounting end of the busbar body, and then install the mounting flange 4 onto the busbar body from the mounting end of the busbar body. The flange flange 401 of the mounting flange is close to the mounting end of the busbar body, and the flange tube 402 of the mounting flange faces the mounting ring 5.

[0071] Step 2: Fix the positioning mechanism 1 to one end of the busbar body with connecting bolts 6; the positioning end plate 101 is positioned and assembled with the contact terminal 301 of the insulating tube busbar through the end plate positioning groove 1011, and the corresponding connecting threaded holes on the positioning end plate 101 and the contact terminal 301 are connected by connecting bolts 6, connecting the positioning mechanism 1 and the insulating tube busbar 3; the positioning ring plate 103 is positioned and assembled with the flange flange plate 401 of the mounting flange through the ring plate positioning groove 1031.

[0072] Step 3: The two semi-circular ring split pressure plates are assembled to the open end of the ring plate positioning groove 1031, forming an annular pressure plate 2. The pressure plate through hole 201 and the positioning ring plate through hole 1032 are connected by a bolt group 7 consisting of bolts, nuts, flat washers and spring washers, so that the pressure plate 2 is connected and fixed to the positioning ring plate 103 of the positioning mechanism. The flange flange 401 between the pressure plate 2 and the positioning ring plate 103 is pressed and fixed, thereby fixing the flange 4.

[0073] Step 4: Inject adhesive into the injection hole of mounting flange 4. Observe the injection status of the adhesive through the observation window 1021 on the tube of the positioning mechanism, ensuring that adhesive 8 fills the cavity between the outer surface of the busbar body and the inner surface of the mounting flange. The specific process is as follows:

[0074] a. Fit heat shrink tubing 901 onto the lower end of the mounting flange 4 and the busbar body. The heat shrink tubing 901 is shrunk and sealed by an open flame. The heat shrink tubing at the lower end of the mounting flange and the busbar body is fastened with hose clamp 902 to prevent material leakage at the lower end during injection.

[0075] b. Screw the injection nozzle 903 into the injection hole on the side surface of the mounting flange, and connect the injection pipe 904 to the injection nozzle 903;

[0076] c. Place the insulated busbar with the flange opening facing upwards and the shrink-sealed end facing downwards.

[0077] d. Inject adhesive into the injection tube using a glue gun;

[0078] Step 5: Let the insulated busbar stand for 24 hours to allow the adhesive 8 to cure. Then, bond the mounting flange to the busbar body, remove the hose clamp 902, and cut off the injection nozzle 903 along the surface of the mounting flange.

[0079] Step 6: Remove pressure plate 2 and positioning mechanism 1.

[0080] Based on the above technical solution, when injecting adhesive into the injection tube 904 using a glue gun, the injection height of the adhesive should be observed simultaneously to avoid the adhesive entering the installation height of the inner diameter surface of the positioning mechanism 1, which would hinder the disassembly of the positioning mechanism 1. Since a sealing groove is provided on the end face of the flange flange 401 of the mounting flange, and a sealing ring is fitted inside the sealing groove, it can seal the end face of the flange flange 401 and the end face of the positioning ring plate 103, preventing adhesive from entering between the end face of the flange flange 401 and the end face of the positioning ring plate.

[0081] The inner diameter of the mounting ring matches the outer diameter of the flange pipe of the mounting flange. The center of the mounting ring has an assembly hole 501 that matches the flange flange plate. After the flange is bonded, the mounting ring 5 does not need to be installed on the mounting flange 4. Only when the insulated busbar product is transported to the construction site and installed on the switchgear, the mounting ring 5 moves to the flange pipe 402 of the mounting flange, and the assembly hole 501 of the mounting ring is positioned and assembled with the flange flange plate 401. The mounting ring 5 is then connected to the switchgear with bolts, and the flange flange plate 401 is pressed tightly to fix the mounting flange 4 to the switchgear. See Appendix. Figure 12 .

[0082] The installation fixture, consisting of a positioning mechanism and a pressure plate, determines the position of the mounting flange. Once the position is determined, the mounting flange can be bonded. After the adhesive cures, the installation fixture can be removed and reused. The advantages of this invention are that the size and position requirements of the mounting flange are determined by the installation fixture, resulting in accurate positioning, high efficiency, and low skill requirements for operators. The installation fixture is simple, accurate, efficient, and reusable, enabling convenient and accurate determination of the mounting flange's position.

[0083] It should be noted that the parts of this utility model not described in detail are existing technologies.

[0084] The above-listed embodiments are merely preferred embodiments of this utility model. Obviously, this utility model is not limited to the above embodiments and many variations are possible. All variations that can be directly derived or conceived by those skilled in the art from the disclosure of this utility model should be considered within the protection scope of this utility model.

Claims

1. An insulating tube bus installation flange bonding positioning tool, characterized by: The positioning mechanism comprises a tube, a positioning end plate and a positioning ring plate, the positioning end plate is fixed to one end of the tube, the positioning end plate is positioned and assembled with the bus end of the insulating tube through the end plate positioning slot, the positioning ring plate is fixed to the other end of the tube, and the positioning ring plate is positioned and assembled with the mounting flange through the ring plate positioning slot; the mounting flange is sleeved on the bus body, the pressing plate is arranged at the opening end of the ring plate positioning slot and presses the mounting flange, and the pressing plate and the positioning ring plate are fixed through bolts.

2. The insulating tube bus mounting flange bonding positioning tooling fixture according to claim 1, characterized in that: The positioning end plate is positioned and assembled with the contact terminal of the end of the insulating tube bus through the end plate positioning slot, the contact terminal is welded with the copper tube, and belongs to a part of the conductor, the conductor is externally covered with an epoxy resin insulating layer, and the conductor and the insulating layer constitute the bus body of the insulating tube bus.

3. The insulating tube bus mounting flange bonding positioning tooling fixture according to claim 2, characterized in that: The positioning end plate of the positioning mechanism is provided with corresponding connecting threaded holes on the contact terminal of the insulating tube bus and is fixed through connecting bolts.

4. The insulating tube bus mounting flange bonding positioning tooling fixture of claim 1, wherein: The tube is welded and connected with the positioning end plate and the positioning ring plate at both ends respectively.

5. The insulating tube bus mounting flange bonding positioning tooling fixture of claim 1, wherein: An observation window is arranged on the tube for observing the injection of the adhesive.

6. The insulating tube bus mounting flange bonding positioning tooling fixture according to claim 5, characterized in that: The observation window is an axial long slot arranged on the side wall of the tube, and 3-5 observation windows are uniformly arranged along the circumferential direction of the tube.

7. The insulating tube bus mounting flange bonding positioning tooling fixture according to claim 1, characterized in that: The pressing plate is a ring structure formed by two half circular ring split pressing plates, a plurality of pressing plate through holes are uniformly arranged on the pressing plate along the circumferential direction, the pressing plate through holes correspond to the positioning ring plate through holes on the positioning ring plate one by one, and the pressing plate and the positioning ring plate are fastened through the bolt set formed by the bolts, the nuts, the flat washers and the elastic washers.

8. The insulating tube bus mounting flange bonding positioning tooling fixture according to claim 7, characterized in that: The pressing plate through holes and the positioning ring plate through holes are six, and three pressing plate through holes are arranged on each split pressing plate.

9. The insulating tube bus mounting flange bonding positioning tooling fixture according to claim 1, characterized in that: The mounting flange comprises a flange tube and a flange flange disc at one end of the flange tube, and the ring plate positioning slot is positioned and assembled with the flange flange disc of the mounting flange; a material injection hole is arranged on the side surface of the flange tube, and the material injection hole is used for injecting the adhesive for bonding the mounting flange between the inner wall of the mounting flange and the outer wall of the bus body.

10. The insulating tube bus mounting flange bonding positioning tooling fixture according to claim 1, characterized in that: When the adhesive is poured between the mounting flange and the bus body for bonding, a heat shrink tube is sleeved at the joint between the end of the mounting flange away from the positioning mechanism and the bus body, the heat shrink tube is shrunk and sealed on the mounting flange and the bus body by passing through a clear fire, and the heat shrink tube at the end of the mounting flange away from the positioning mechanism and the heat shrink tube outside the bus body are fastened through a throat clamp respectively.

Images