A GIL pipeline docking device and use method

Abstract

A GIL pipeline docking device and a use method thereof, comprising a lower end pipe axis guide clamp, a welding machine track guide clamp, a reference guide clamp and an upper end pipe axis directional clamp, the lower end pipe axis guide clamp is arranged on a guide slide rail and slides along the guide slide rail, the lower GIL pipe body is fixed in the lower end pipe axis guide clamp and slides synchronously, the upper end pipe axis directional clamp is fixedly arranged above the lower end pipe axis guide clamp, the upper GIL pipe body is clamped in the upper end pipe axis directional clamp and remains stationary, the lower GIL pipe body is provided with a welding machine track guide clamp and used for installing the welding machine track, the lower GIL pipe body is also provided with a reference guide clamp and used for aligning the axis when the pipes are docked, the lower end pipe axis guide clamp and the upper end pipe axis directional clamp are connected by a basket bolt; the present invention can complete the adaptive docking of pipes through multiple components, and compared with the traditional manual docking method, the docking quality and efficiency are greatly improved, thereby effectively improving the later welding quality of the GIL pipe.

Description

Technical Field

[0001] The invention belongs to the technical field of pipeline welding, and in particular relates to a GIL pipeline butt joint device and a use method thereof. Background Art

[0002] In modern power transmission systems, the importance of gas-insulated metal-enclosed transmission lines (GIL) as an efficient, reliable and environmentally friendly way of power transmission is becoming increasingly prominent. The GIL system achieves large-capacity and long-distance transmission of ultra-high voltage electricity by encapsulating high-voltage conductors in a high-pressure insulating gas environment (such as SF6) and placing them in a sturdy metal casing. It is particularly suitable for densely populated urban areas, underground crossings, and special areas with strict environmental requirements. However, to ensure the efficient operation and long-term stability of the GIL system, high-quality pipeline docking technology is an indispensable part.

[0003] During the welding process of GIL pipeline, two sections of GIL pipeline need to be quickly and accurately docked, and the welding quality of GIL pipeline weld can only be guaranteed under the premise of ensuring seamless docking of the two ends of the pipeline. Since the GIL pipeline needs to be heated during the docking, and the docking of the pipeline is required to be completed within a limited space and time, fast and effective docking is the key to determining the welding success rate during GIL pipeline maintenance. There is no GIL pipeline welding alignment device in the existing equipment, which results in the GIL pipeline being heavily dependent on the operator's operating proficiency during the welding and docking process, and the final welding quality is also limited by the docking quality. Summary of the invention

[0004] In view of the technical problems existing in the background technology, the present invention provides a GIL pipeline docking device and a method of use, which can complete the adaptive docking of GIL pipelines through multiple components. Compared with the traditional manual docking method, the docking quality and efficiency are greatly improved, thereby effectively improving the later welding quality of the GIL pipeline.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions to achieve:

[0006] A GIL pipeline docking device comprises a lower end pipe axis guide clamp, a welding machine track guide clamp, a reference guide clamp and an upper end pipe axis orientation clamp, wherein the lower end pipe axis guide clamp is arranged on a guide slide rail and slides along the guide slide rail, the lower GIL pipe body is fixed in the lower end pipe axis guide clamp and slides synchronously, the upper end pipe axis orientation clamp is fixedly arranged above the lower end pipe axis guide clamp, the upper GIL pipe body is clamped in the upper end pipe axis orientation clamp and remains stationary, the lower GIL pipe body is provided with a welding machine track guide clamp and used for installing the welding machine track, the lower GIL pipe body is also provided with a reference guide clamp and used for aligning the axis when the GIL pipe is docked, and the lower end pipe axis guide clamp and the upper end pipe axis orientation clamp are connected by a basket bolt.

[0007] In a preferred solution, the lower end pipe shaft guide clamp comprises a guide base, a guide wheel, a jacking device, a jacking power device, a buffer pile, a first clamp and a fixed wing plate; a guide wheel is provided at the bottom of the guide base, the guide wheel is placed on a guide slide rail, and a jacking device is installed on both sides of the upper end surface of the guide base, the transmission system of the jacking device is connected to the jacking power device, the upper end of the jacking device is connected to the first clamp through the buffer pile, and fixed wing plates are symmetrically arranged on the outer wall of the first clamp.

[0008] In a preferred solution, the welding machine track guide clamp includes a second clamp, a first mounting plate is arranged on the outer side of the second clamp, and the limiting arm claw is hinged to the first mounting plate and can lock the flip angle.

[0009] In a preferred solution, the upper end of the welding machine track guide clamp is spliced ​​with the welding machine track.

[0010] In a preferred solution, the upper end tube axis directional clamp includes a third clamp, and a second mounting plate is installed on the outer side of the third clamp. The movable wing plate is hinged to the second mounting plate and can lock the flip angle.

[0011] A GIL pipeline docking device, which comprises the following steps when used:

[0012] S1. Open the upper pipe axis directional clamp, and the staff will hold and lift the upper GIL pipe body together, and put the upper GIL pipe body into the upper pipe axis directional clamp, adjust the position of the upper pipe axis directional clamp to make it close to the pipe mouth, pre-tighten the clamp bolts, and use a depth gauge to check the parallelism with the pipe mouth. After meeting the requirements, tighten the clamp bolts completely, so that the movable wing plate turns downward and locks the position;

[0013] S2. Open the lower pipe shaft guide clamp, lift the lower GIL pipe body vertically with the crane through the sling, and put the lower GIL pipe body into the lower pipe shaft guide clamp, adjust the position of the lower pipe shaft guide clamp and tighten the clamp bolt;

[0014] S3, the lifting device is extended by the lifting power device to lift the lower end pipe shaft guide clamp and the lower GIL pipe body until the sling is in a relaxed state, at which time the force point of the lower GIL pipe body is converted;

[0015] S4. Cover the mouth of the lower GIL tube with a dustproof plate and check if there is any metal shavings or dust pollution during the operation;

[0016] S5. Open the welding machine track guide clamp and install it to the correct installation position;

[0017] S6. Flip the limit arm claw downward, open the reference guide clamp, and install the reference guide clamp to the outside of the lower GIL tube body so that the reference guide clamp is close to the tube opening of the lower GIL tube body. After adjusting the position, tighten the clamp bolt on the reference guide clamp;

[0018] S7, remove the dust plate in the step, one person pushes the lower end pipe shaft guide clamp to slide forward, and one person operates the jacking device to move upward to complete the connection of the pipe openings of the upper GIL pipe body and the lower GIL pipe body. When the pipe openings of the upper and lower pipe bodies are close to each other, the jacking device stops jacking;

[0019] S8. Preheat the GIL pipe body orifice according to the external pipe heating docking operation procedures;

[0020] S9. After heating is completed, one person operates the lifting device to continue to move upward, and another person cooperates to observe until the upper GIL pipe body and the lower GIL pipe body are seamlessly connected;

[0021] S10, flip the movable wing plate upward and lock it, connect the movable wing plate and the fixed wing plate with a turnbuckle bolt, and adjust the tension ropes therebetween until the upper and lower pipes are neat and without gaps;

[0022] S11. Remove the reference guide clamp, splice the welding machine track above the welding machine track guide clamp, and install the automatic welding machine on the welding machine track.

[0023] In the preferred scheme, in S7 and S9, when the upper GIL tube body and the lower GIL tube body are docked, it is necessary to ensure that the downward-turned movable wing plate always abuts against the outer wall of the reference guide clamp, so that the upper GIL tube body and the lower GIL tube body remain coaxial during the process of moving towards each other.

[0024] In a preferred solution, in S5, the step of installing the welding machine track guide clamp includes the following steps:

[0025] S5.1. Open the second clamp outward and fix it on the outer wall of the lower GIL tube body;

[0026] S5.2. Adjust the position of the second clamp and pre-tighten the clamp bolts;

[0027] S5.3. Turn over the limit arm claw and hook it onto the pipe opening of the lower GIL pipe body;

[0028] S5.4. Use a rubber hammer to hammer down the second clamp, check the flatness of the second clamp and complete the installation.

[0029] A GIL pipeline docking device and a method of use, which can achieve the following beneficial effects:

[0030] 1. The upper end tube axis directional clamp cooperates with the reference guide clamp to ensure that the upper GIL tube body and the lower GIL tube body remain coaxial during the process of moving towards each other, so as to ensure the accuracy of the pipe mouth docking;

[0031] 2. The upper pipe axis directional clamp is combined with the lower pipe axis guide clamp, and two people can complete the docking of the GIL pipe body, which greatly improves the docking efficiency and accuracy;

[0032] 3. The installation of the welding track can ensure the accuracy of the welding machine installation process by using the welding track guide clamp;

[0033] 4. Tightening and fixing the upper pipe axis directional clamp and the lower pipe axis guide clamp by using the basket bolts can ensure seamless docking of the upper and lower pipes, further improving the accuracy of the docking process. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0035] Figure 1 It is a schematic diagram of the operation effect of the overall structure of the present invention;

[0036] Figure 2 This is a schematic diagram of the structure of the lower end pipe shaft guide clamp of the present invention;

[0037] Figure 3 This is a schematic diagram of the reference guide hoop structure of the present invention;

[0038] Figure 4 This is a schematic diagram of the track guide clamp structure of the welding machine of the present invention;

[0039] Figure 5 The schematic diagram of the welding machine track guide hoop structure of the present invention is shown in FIG. Figure 2 ;

[0040] Figure 6 This is a schematic diagram of the structure of the directional clamp for welding the upper end pipe axis of the present invention;

[0041] Figure 7 The schematic diagram of the directional clamp structure of the upper end pipe axis welded in the present invention Figure 2 ;

[0042] Figure 8This is a schematic diagram of step S1 of the present invention;

[0043] Fig. 9 This is a schematic diagram of steps S2-S3 of the present invention;

[0044] Fig.10 This is a schematic diagram of step S4 of the present invention;

[0045] Fig.11 This is a schematic diagram of steps S5-S8 of the present invention;

[0046] Fig.12 This is a schematic diagram of step S9 of the present invention;

[0047] Fig.13 It is a schematic diagram of steps S10-S11 of the present invention.

[0048] In the figure: lower end pipe axis guide clamp 1, guide base 101, guide wheel 102, jacking device 103, jacking power device 104, buffer pile 105, first clamp 106, fixed wing plate 107, welding machine track guide clamp 2, second clamp 201, limit arm claw 202, first mounting plate 203, reference guide clamp 3, upper end pipe axis directional clamp 4, third clamp 401, movable wing plate 402, second mounting plate 403, guide slide rail 5, basket bolt 6, lower GIL tube body 7, upper GIL tube body 8, welding machine track 9, dustproof plate 10. DETAILED DESCRIPTION

[0049] like Figure 1 As shown, a GIL pipeline docking device includes a lower end pipe axis guide hoop 1, a welding machine track guide hoop 2, a reference guide hoop 3 and an upper end pipe axis orientation hoop 4, the lower end pipe axis guide hoop 1 is arranged on a guide slide rail 5 and slides along the guide slide rail 5, the lower GIL tube body 7 is fixed in the lower end pipe axis guide hoop 1 and slides synchronously, the upper end pipe axis orientation hoop 4 is fixedly arranged above the lower end pipe axis guide hoop 1, the upper GIL tube body 8 is clamped in the upper end pipe axis orientation hoop 4 and remains stationary, the lower GIL tube body 7 is provided with a welding machine track guide hoop 2 and used for installing a welding machine track 9, the lower GIL tube body 7 is also provided with a reference guide hoop 3 and used for aligning the axis when the GIL pipeline is docked, and the lower end pipe axis guide hoop 1 and the upper end pipe axis orientation hoop 4 are connected by a basket bolt 6.

[0050] The preferred solution is Figure 2As shown, the lower end pipe shaft guide clamp 1 includes a guide base 101, a guide wheel 102, a jacking device 103, a jacking power device 104, a buffer pile 105, a first clamp 106 and a fixed wing plate 107; the bottom of the guide base 101 is provided with a guide wheel 102, the guide wheel 102 is placed on the guide slide rail 5, and the jacking device 103 is installed on both sides of the upper end surface of the guide base 101. The transmission system of the jacking device 103 is connected to the jacking power device 104, and the upper end of the jacking device 103 is connected to the first clamp 106 through the buffer pile 105, and the outer wall of the first clamp 106 is annularly symmetrically provided with fixed wing plates 107.

[0051] The preferred solution is Figure 4 and Figure 5 As shown, the welding machine track guide clamp 2 includes a second clamp 201, a first mounting plate 203 is arranged on the outer side of the second clamp 201, and a limiting arm claw 202 is hinged to the first mounting plate 203 and can lock the flip angle.

[0052] The preferred solution is Figure 3 As shown, the upper end of the welding machine track guide clamp 2 is spliced ​​with the welding machine track 9.

[0053] The preferred solution is Figure 6 and Figure 7 As shown, the upper end tube axis orientation clamp 4 includes a third clamp 401, and a second mounting plate 403 is installed on the outer side of the third clamp 401. The movable wing plate 402 is hinged to the second mounting plate 403 and can lock the flip angle.

[0054] Example:

[0055] S1, such as Figure 8 As shown, the upper end pipe axis directional clamp 4 is opened, and the staff hold and lift the upper GIL tube body 8 together, and put the upper GIL tube body 8 into the upper end pipe axis directional clamp 4, adjust the position of the upper end pipe axis directional clamp 4 to make it close to the pipe mouth, pre-tighten the clamp bolts, and use a depth gauge to check the parallelism with the pipe mouth. After meeting the requirements, tighten the clamp bolts completely, so that the movable wing plate 402 is turned downward and locked in position;

[0056] S2, such as Fig. 9 As shown, the lower end pipe shaft guide clamp 1 is opened, the crane vertically lifts the lower GIL tube body 7 through the sling, and the lower GIL tube body 7 is placed into the lower end pipe shaft guide clamp 1, and the position of the lower end pipe shaft guide clamp 1 is adjusted and the clamp bolt is tightened;

[0057] S3, such as Fig. 9 As shown, the lifting device 103 is extended by the lifting power device 104 to lift the lower end pipe shaft guide clamp 1 and the lower GIL tube body 7 until the sling is in a relaxed state, at which time the force point of the lower GIL tube body 7 is converted;

[0058] S4, such as Fig.10 As shown, a dustproof plate 10 is added to the mouth of the lower GIL tube body 7 to check if there is any metal shavings or dust pollution during the operation;

[0059] S5, such as Fig.11 As shown, open the welding machine track guide clamp 2 and install it to the correct installation position; wherein the installation steps of the welding machine track guide clamp 2 include the following steps:

[0060] S5.1, open the second clamp 201 outward and fix it on the outer wall of the lower GIL tube body 7;

[0061] S5.2. Adjust the position of the second clamp 201 and pre-tighten the clamp bolts;

[0062] S5.3, flip the limit arm claw 202 and make it hook the pipe opening of the lower GIL pipe body (7;

[0063] S5.4. Use a rubber hammer to hammer down the second clamp 201 to check the flatness of the second clamp 201 and complete the installation:

[0064] S6, such as Fig.11 As shown, the limit arm claw 202 is flipped downward, the reference guide clamp 3 is opened, and the reference guide clamp 3 is installed to the outside of the lower GIL tube body 7, so that the reference guide clamp 3 is close to the tube opening of the lower GIL tube body 7. After adjusting the position, tighten the clamp bolt on the reference guide clamp 3;

[0065] S7, such as Fig.11 As shown, the dust plate 10 in step 4 is removed, one person pushes the lower end pipe shaft guide clamp 1 to slide forward, and one person operates the jacking device 103 to move upward to complete the pipe opening docking of the upper GIL pipe body 8 and the lower GIL pipe body 7. When the pipe openings of the upper and lower pipe bodies are close to each other, the jacking device 103 stops jacking;

[0066] S8, such as Fig.11 As shown, according to the operating procedures for heating and docking of the outer pipe, the pipe mouth of the upper GIL pipe body 8 is preheated;

[0067] S9, such as Fig.12 As shown, after the heating is completed, one person operates the lifting device 103 to continue to move upward, and another person cooperates to observe until the outer tubes of the upper GIL tube body 8 and the lower GIL tube body 7 are seamlessly connected;

[0068] In this step and step S7, when the upper GIL tube body and the lower GIL tube body are docked, it is necessary to ensure that the downward-turned movable wing plate always abuts against the outer wall of the reference guide clamp, so that the upper GIL tube body and the lower GIL tube body remain coaxial during the process of moving toward each other;

[0069] S10, such as Fig.13 As shown, the movable wing plate 402 is turned upward and locked, and the movable wing plate 402 and the fixed wing plate 107 are connected with the turnbuckle bolt 6, and the tension ropes therebetween are adjusted respectively until the upper and lower pipes are neatly arranged without gaps;

[0070] S11, such as Fig.13 As shown, the reference guide clamp 3 is removed, the welding machine track 9 is spliced ​​above the welding machine track guide clamp 2, and the automatic welding machine is installed on the welding machine track 9.

[0071] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. Under the premise of non-conflict, the various technical features recorded in the present invention can be combined with each other. The protection scope of the present invention shall be the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A GIL pipe docking device, comprising a lower end pipe axis guide clamp (1), a welding machine track guide clamp (2), a reference guide clamp (3) and an upper end pipe axis orientation clamp (4), characterized in that: The lower end pipe axis guide clamp (1) is installed on the guide slide rail (5) and slides along the guide slide rail (5) in a limited manner. The lower GIL tube body (7) is fixed in the lower end pipe axis guide clamp (1) and slides synchronously. The upper end pipe axis orientation clamp (4) is fixedly arranged above the lower end pipe axis guide clamp (1). The upper GIL tube body (8) is clamped in the upper end pipe axis orientation clamp (4) and remains stationary. The lower GIL tube body (7) is provided with a welding machine track guide clamp (2) and is used to install the welding machine track (9). The lower GIL tube body (7) is also provided with a reference guide clamp (3) and is used to align the axis of the GIL pipe when it is butt-jointed. The lower end pipe axis guide clamp (1) and the upper end pipe axis orientation clamp (4) are connected by a basket bolt (6). The lower end pipe shaft guide hoop (1) comprises a guide base (101), a guide wheel (102), a lifting device (103), a lifting power device (104), a buffer pile (105), a first hoop (106) and a fixed wing plate (107); the bottom of the guide base (101) is provided with a guide wheel (102), the guide wheel (102) is placed on a guide slide rail (5), the lifting devices (103) are installed on both sides of the upper end surface of the guide base (101), the transmission system of the lifting device (103) is connected to the lifting power device (104), the upper end of the lifting device (103) is connected to the first hoop (106) via the buffer pile (105), and the outer wall of the first hoop (106) is provided with a fixed wing plate (107) in an annular symmetry; The welding machine track guide clamp (2) comprises a second clamp (201), a first mounting plate (203) is arranged on the outer side of the second clamp (201), and a limit arm claw (202) is hingedly connected to the first mounting plate (203) and is capable of locking the flip angle; the upper end of the welding machine track guide clamp (2) is spliced ​​with the welding machine track (9); The upper end tube axis orientation clamp (4) comprises a third clamp (401), a second mounting plate (403) is arranged on the outer side of the third clamp (401), and the movable wing plate (402) is hinged to the second mounting plate (403) and can lock the flip angle.

2. The GIL pipeline docking device according to claim 1, characterized in that: The device comprises the following steps when used: S1. The upper end pipe axis orientation clamp (4) is opened, and the staff members hold and lift the upper GIL pipe body (8) together, and place the upper GIL pipe body (8) into the upper end pipe axis orientation clamp (4), adjust the position of the upper end pipe axis orientation clamp (4) so ​​that it is close to the pipe mouth, pre-tighten the clamp bolts, and use a depth gauge to check the parallelism with the pipe mouth. After meeting the requirements, the clamp bolts are fully tightened to turn the movable wing plate (402) downward and lock the position; S2, open the lower end pipe shaft guide clamp (1), lift the lower GIL pipe body (7) vertically with a crane through a sling, and put the lower GIL pipe body (7) into the lower end pipe shaft guide clamp (1), adjust the position of the lower end pipe shaft guide clamp (1) and tighten the clamp bolt; S3, extending the lifting device (103) through the lifting power device (104), lifting the lower end pipe shaft guide clamp (1) and the lower GIL tube body (7) until the sling is in a relaxed state, at which time the force point of the lower GIL tube body (7) is converted; S4. Cover the mouth of the lower GIL tube body (7) with a dustproof plate (10) and check that there is no metal shavings or dust pollution during the operation; S5. Open the welding machine track guide clamp (2) and install it to the correct installation position; S6, flip the limit arm claw (202) downward, open the reference guide clamp (3), install the reference guide clamp (3) to the outside of the lower GIL tube body (7), make the reference guide clamp (3) close to the tube opening of the lower GIL tube body (7), and after adjusting the position, tighten the clamp bolt on the reference guide clamp (3); S7, remove the dust plate (10) in step 4, one person pushes the lower end pipe shaft guide clamp (1) to slide forward, and one person operates the lifting device (103) to move upward to complete the butt joint of the pipe ends of the upper GIL pipe body (8) and the lower GIL pipe body (7), and when the pipe ends of the upper and lower pipe bodies are close to each other, the lifting device (103) stops lifting; S8. Preheat the mouth of the upper GIL pipe body (8) according to the operating procedures for heating and docking the outer pipe; S9, after the heating is completed, one person operates the lifting device (103) to continue to move upward, and another person cooperates to observe until the outer tubes of the upper GIL tube body (8) and the lower GIL tube body (7) are seamlessly connected; S10, flip the movable wing plate (402) upward and lock it, connect the movable wing plate (402) and the fixed wing plate (107) with the turnbuckle bolt (6), and adjust the tension ropes therebetween until the upper and lower pipes are aligned without gaps; S11. Remove the reference guide clamp (3), splice the welding machine track (9) above the welding machine track guide clamp (2), and install the automatic welding machine on the welding machine track (9).

3. The GIL pipeline docking device according to claim 2, characterized in that: In S7 and S9, when the upper GIL tube body (8) and the lower GIL tube body (7) are butted together, it is necessary to ensure that the movable wing plate (402) that is flipped downward always abuts against the outer wall of the reference guide clamp (3), thereby allowing the upper GIL tube body (8) and the lower GIL tube body (7) to remain coaxial during the process of moving towards each other.

4. The GIL pipeline docking device according to claim 2, characterized in that: In S5, the steps of installing the welding machine track guide clamp (2) include the following steps: S5.

1. Open the second clamp (201) outward and fix it on the outer wall of the lower GIL tube body (7); S5.

2. Adjust the position of the second clamp (201) and pre-tighten the clamp bolts; S5.3, flip the limit arm claw (202) and make it hook the tube opening of the lower GIL tube body (7); S5.

4. Use a rubber hammer to hammer down the second clamp (201) to check the flatness of the second clamp (201) and complete the installation.

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