Auxiliary tool for butt welding of steam tank pipeline of steam turbine

Abstract

The utility model discloses a steam turbine steam tank pipeline butt welding auxiliary tool in the technical field of welding auxiliary devices, and the steam turbine steam tank pipeline butt welding auxiliary tool comprises a fixing mechanism and a supporting mechanism, the fixing mechanism comprises a first hoop and a second hoop, the first hoop is used for fixing and tightly holding a connecting pipe, and the first hoop comprises an upper first hoop and a lower first hoop; a plurality of transverse threaded rods are uniformly and fixedly connected to the side walls of the upper hoop I and the lower hoop I at intervals; the second hoop is used for fixing and holding a to-be-welded pipeline, the second hoop comprises a second upper hoop and a second lower hoop, transverse through holes are evenly formed in the second upper hoop and the second lower hoop at intervals, the threaded rods are inserted into the through holes, and the through holes correspond to the threaded rods one to one in number and right face the threaded rods; the supporting mechanism comprises a supporting plate used for containing a pipeline, the supporting plate is fixedly connected to the side, back to the first lower hoop, of the second lower hoop, and a plurality of supporting rods used for keeping the supporting plate in the horizontal state are installed on the lower surface of the supporting plate. According to the scheme, the problem that the pipeline welding efficiency of an existing steam tank connecting pipe is low is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding auxiliary devices, in particular to a butt welding auxiliary tool for a steam tank pipeline of a steam turbine. Background Art

[0002] A steam turbine steam tank, often referred to as a steam buffer tank or steam receiver (hereinafter referred to as a steam tank), is a common device in thermal power plants, industrial steam systems, and cogeneration systems. Its primary function is to store and stabilize the steam supply, ensuring smooth and efficient operation of the steam system.

[0003] The steam tank is connected to pipes such as the steam inlet pipe, steam outlet pipe, and sewage pipe. In order to ensure that the steam inlet pipe, steam outlet pipe, and other pipes can withstand high temperature or high pressure environments, heat-resistant and pressure-resistant alloy steel pipes are usually welded to the pipes of the steam tank. However, during the welding process, since the pipes of the steam tank are at a certain height from the ground, when welding, the pipe to be welded needs to be raised to a plane at the same height as the pipe, and then the pipe and the pipe need to be aligned and a fixed gap is maintained before welding. However, this welding method requires the pipe to be lifted with a lifting device, moved to the same height as the pipe, and then manually measured with tools to align the central axis of the pipe with the pipe. After alignment, the pipe is supported with a support tool to keep it horizontal before welding. This method makes the entire welding process complicated, greatly affecting the welding efficiency. Utility Model Content

[0004] The utility model aims to provide a steam turbine steam tank pipeline butt welding auxiliary tool to solve the problem of low efficiency in the existing steam tank pipeline welding.

[0005] To solve the above technical problems, the present invention provides the following technical solutions: a steam turbine steam tank pipe butt welding auxiliary tooling, comprising a fixing mechanism and a supporting mechanism, the fixing mechanism comprising a clamping hoop 1 and a clamping hoop 2, the clamping hoop 1 being used to fix and hold the pipe, the clamping hoop 1 comprising an upper clamping hoop 1 and a lower clamping hoop 1, and a plurality of transverse threaded rods being evenly spaced and fixedly connected to the side walls of the upper clamping hoop 1 and the lower clamping hoop 1; the clamping hoop 2 being used to fix and hold the pipe to be welded, the clamping hoop 2 comprising an upper clamping hoop 2 and a lower clamping hoop 2, and transverse through-holes being evenly spaced and penetrating on the upper clamping hoop 2 and the lower clamping hoop 2, and the through-holes being used to insert the threaded rods, and the number of the through-holes corresponds one to one to the number of the threaded rods and is directly opposite to the threaded rods;

[0006] The supporting mechanism includes a support plate for placing the pipe, the support plate is fixedly connected to the side of the lower clamp second facing away from the lower clamp first, and a plurality of support rods for keeping the support plate in a horizontal state are installed on the lower surface of the support plate.

[0007] The working principle of the utility model is as follows: Before use, the upper clamp (2) is inserted into the upper clamp (1) through a through-hole, and the lower clamp (2) is similarly inserted into the lower clamp (2) through a through-hole. During use, the upper clamp (1) is placed on the upper surface of the pipe, and the lower clamp (1) is placed on the lower surface of the pipe. The upper and lower clamps are then bolted together and secured, firmly holding the pipe in place. The pipe to be welded to the pipe is then placed on a support plate, which is supported by support rods. The pipe is then pushed until its end exceeds the edge of the lower clamp (2). The upper clamp (2) is then placed on the upper surface of the pipe. The upper and lower clamps are then bolted together and secured, firmly holding the pipe in place. Nuts are then threaded onto each threaded rod. The rotation of the nuts pushes the clamp (2) toward the clamp (1), which in turn moves the pipe toward the pipe. When the distance between the pipe and the pipe meets the welding requirements, the nuts are stopped, and welding begins. After welding is completed, the clamps 1 and 2 can be removed by rotating the bolts on the clamps 1 and 2 in the opposite direction.

[0008] Beneficial effects of the utility model:

[0009] 1. This solution inserts the threaded rod arranged horizontally on the clamp one into the corresponding through hole on the clamp two, so that the clamp one and the clamp two are aligned, and then the length of the threaded rod inserted into the through hole is controlled by turning the nut. This can fix the distance between the pipe and the connecting pipe, facilitate welding, and also facilitate the coaxiality of the central axis of the pipe and the connecting pipe. The pipe will not shake during the welding process, which greatly improves the accuracy of pipe welding.

[0010] 2. Before welding the pipeline, just place the pipeline on the pallet. When welding or moving the pipeline, just move the pipeline horizontally on the pallet without lifting or hoisting. This not only effectively saves workers' physical strength, but also simplifies the operation steps, shortens the operation time, and greatly improves the pipeline welding efficiency of the steam tank takeover.

[0011] Furthermore, rubber pads are fixedly connected to the inner walls of the first and second clamps to protect the outer walls of the pipe and the tube through the rubber pads to avoid damage caused by hard contact.

[0012] Furthermore, the support plate is an arc-shaped support plate. The purpose is that the arc-shaped support plate can better place the pipeline, prevent the pipeline from rolling and falling off the support plate, and the pipeline position is stable after it stops and is not prone to deviation.

[0013] Furthermore, the support rod is made of a telescopic rod. Its purpose is that the support rod made of the telescopic rod can adjust the height of the support plate according to actual conditions, so that the pipeline can be better aligned with the connecting pipe of the steam tank.

[0014] Furthermore, the bottom end of the support rod is fixedly connected to a base, so as to increase the contact surface between the support rod and the ground through the base and improve the stability of the support rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural diagram of the utility model steam turbine steam tank pipe butt welding auxiliary tooling;

[0016] Figure 2 This is a state diagram of the utility model steam turbine steam tank pipe butt welding auxiliary tooling when in use;

[0017] Figure 3 for Figure 1 A schematic structural diagram of the front view of the middle clamp. DETAILED DESCRIPTION

[0018] The following is further described in detail through specific implementation methods:

[0019] The reference numerals in the drawings of the specification include: upper clamp 1, threaded rod 2, upper clamp 2, through hole 4, nut 5, support plate 6, support rod 7, lower clamp 2, lower clamp 1 9, bolt 10.

[0020] The embodiment is basically as shown in the attached Figure 1 ~Attached Figure 3 As shown:

[0021] The auxiliary tooling for butt welding of steam tank pipes of a steam turbine includes a fixing mechanism and a supporting mechanism. The fixing mechanism includes a clamping hoop 1 and a clamping hoop 2. Rubber pads are fixedly connected to the inner walls of the clamping hoop 1 and the clamping hoop 2. The clamping hoop 1 is used to fix and hold the pipe. The clamping hoop 1 includes an upper clamping hoop 1 and a lower clamping hoop 9. A plurality of transverse threaded rods 2 are evenly spaced and fixedly connected to the side walls of the upper clamping hoop 1 and the lower clamping hoop 9. The clamping hoop 2 is used to fix and hold the pipe to be welded. The clamping hoop 2 includes an upper clamping hoop 2 3 and a lower clamping hoop 2 8. Transverse through holes 4 are evenly spaced on the upper clamping hoop 2 3 and the lower clamping hoop 2 8. The through holes 4 are used to insert the threaded rods 2. The through holes 4 correspond to the number of the threaded rods 2 and are directly opposite the threaded rods 2.

[0022] The supporting mechanism includes an arc-shaped support plate 6 for placing the pipe. The support plate 6 is fixedly connected to the side of the lower clamp 2 8 facing away from the lower clamp 1 9. A plurality of support rods 7 are installed on the lower surface of the support plate 6 to keep the support plate 6 in a horizontal state. The support rod 7 is made of a telescopic rod, and the bottom end of the support rod 7 is fixedly connected to the base.

[0023] The specific implementation process is as follows:

[0024] Before use, the upper clamp 3 is inserted into the upper clamp 1 through the through hole 4, and the lower clamp 8 is also inserted into the lower clamp 9 through the through hole 4. When in use, the upper clamp 1 is placed on the upper surface of the pipe, and then the lower clamp 9 is placed on the lower surface of the pipe. Then, the upper clamp 1 and the lower clamp 9 are closed and tightened with bolts 10. At this time, the upper clamp 1 and the lower clamp 9 firmly hold the pipe. The pipe to be welded to the pipe is then placed on the support plate 6, with the support rod 7 supporting the support plate 6 and the pipe. The pipe is then pushed to move its end beyond the edge of the lower clamp 8. The upper clamp 3 is then placed on the upper surface of the pipe. The upper clamp 3 and the lower clamp 8 are then closed and tightened using bolts 10. At this point, the end of the pipe is fixedly clamped by the clamp 2. Nuts 5 are then threaded onto each threaded rod 2. The rotation of the nuts 5 pushes the clamp 2 toward the clamp 1, which in turn moves the pipe toward the pipe. When the distance between the pipe and the pipe meets the welding requirements, the rotation of the nuts 5 is stopped, and welding begins. After welding is complete, the bolts 10 on the clamps 1 and 2 can be reversed to remove them. Before welding, the length of the support rods 7 can be adjusted according to actual conditions to achieve the purpose of adjusting the height of the support plate 6.

Claims

1. Auxiliary tooling for butt welding of steam tank pipes of steam turbine, characterized by: It includes a fixing mechanism and a supporting mechanism, the fixing mechanism includes a clamping hoop 1 and a clamping hoop 2, the clamping hoop 1 is used to fix and hold the pipe, the clamping hoop 1 includes an upper clamping hoop 1 and a lower clamping hoop 1, and a plurality of transverse threaded rods are evenly spaced and fixedly connected to the side walls of the upper clamping hoop 1 and the lower clamping hoop 1; the clamping hoop 2 is used to fix and hold the pipe to be welded, the clamping hoop 2 includes an upper clamping hoop 2 and a lower clamping hoop 2, and transverse through holes are evenly spaced on the upper clamping hoop 2 and the lower clamping hoop 2, and the through holes are used to insert the threaded rods, and the number of through holes corresponds to the number of threaded rods and is directly opposite to the threaded rods; The supporting mechanism includes a support plate for placing the pipe, the support plate is fixedly connected to the side of the lower clamp second facing away from the lower clamp first, and a plurality of support rods for keeping the support plate in a horizontal state are installed on the lower surface of the support plate.

2. The auxiliary tool for butt welding of steam tank pipes of a steam turbine according to claim 1, characterized in that: Rubber pads are fixedly connected to the inner walls of the first and second clamps.

3. The auxiliary tool for butt welding of steam tank pipes of a steam turbine according to claim 2, characterized in that: The supporting plate is an arc-shaped supporting plate.

4. The auxiliary tool for butt welding of steam tank pipes of a steam turbine according to claim 3, characterized in that: The support rod is made of a telescopic rod.

5. The auxiliary tool for butt welding of steam tank pipes of a steam turbine according to claim 4, characterized in that: The bottom end of the support rod is fixedly connected to a base.

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