Sealing end pipeline welding tool

Abstract

The utility model discloses a sealing end pipeline welding tool, which belongs to the technical field of labyrinth seal welding and comprises a bottom plate, a base rotationally connected onto the bottom plate, a positioning part mounted on the base and used for fixing a sealing end, and a hollow intermediate mounted on the base and fixed outside the base. The axis of the middle body and the rotating shaft of the base are concentric, the top of the middle body is provided with a plurality of supporting plates for supporting a pipeline, the supporting plates are arranged in a circumferential array mode, notches for limiting the pipeline are formed in the supporting plates, and workers can conveniently weld labyrinth seal inlets and outlets at different angles.

Description

Technical Field

[0001] The utility model relates to the technical field of labyrinth seal welding, and more specifically, to a welding tool for a sealed end pipeline. Background Art

[0002] Labyrinth seal means a seal in which there are many tortuous small chambers between a rotating part and a fixed part to reduce leakage. It is an ideal labyrinth flow channel model, in which a number of annular seal teeth are arranged in sequence around a rotating shaft, and a series of throttling gaps and expansion cavities are formed between the teeth. When the medium to be sealed passes through the gaps of the tortuous labyrinth, a throttling effect is generated to achieve the purpose of leakage prevention.

[0003] Regarding the problems of the existing welding method for the inlet and outlet of the labyrinth seal, workers need to move continuously according to the change of the welding position during welding, resulting in unstable welding quality, low efficiency, and workers are prone to fatigue. Content of the Utility Model

[0004] Aiming at the problems existing in the prior art, the purpose of the utility model is to provide a welding tool for a sealed end pipeline, which can facilitate workers to weld the inlets and outlets of the labyrinth seal at different angles.

[0005] To solve the above problems, the utility model adopts the following technical solutions.

[0006] A welding tool for a sealed end pipeline, including a bottom plate, a base rotatably connected to the bottom plate, a positioning member for fixing the sealed end installed on the base, an intermediate body installed on the base, the intermediate body being hollow, the intermediate body being fixed outside the base, the axis of the intermediate body being concentric with the rotation axis of the base, a plurality of support plates for supporting the pipeline arranged on the top of the intermediate body, the plurality of support plates being arranged in a circumferential array, and notches for limiting the pipeline being formed on the support plates.

[0007] Preferably, the positioning member includes a positioning rod, and the positioning rod is vertically arranged on the base.

[0008] Preferably, the bottom plate and the base are rotatably connected through a bearing.

[0009] Preferably, the notch is semi-circular, and the axis of the notch passes through the extension line of the rotation axis of the base.

[0010] Preferably, a heat preservation part is arranged on the inner side surface of the intermediate body, and the heat preservation part is annular.

[0011] Preferably, a heat insulation pad is installed on the base.

[0012] Preferably, an extension part is arranged outside the intermediate body, and the support plate is fixed on the extension part.

[0013] Compared with the prior art, the advantages of the present utility model are as follows:

[0014] 1. In this solution, the base plays a supporting role for the labyrinth seal end, the positioning member ensures the positioning of the labyrinth seal end, the support plate plays a supporting role for the pipeline, ensuring that the welding joint between the pipeline and the labyrinth seal plug is at the same height. At the same time, the notch plays a limiting role for the pipeline to prevent the pipeline from falling off the support plate. Meanwhile, the base and the bottom plate are rotatably matched, which facilitates the staff to adjust the positions of the staff, the labyrinth seal end and the pipeline without moving, facilitating welding, avoiding the need to adjust the position of the staff every time after the pipeline welding is completed, reducing the labor intensity and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0016] Figure 2 is a front structural schematic diagram of the present utility model;

[0017] Figure 3 is a top structural schematic diagram of the present utility model;

[0018] Figure 4 is a sectional structural schematic diagram of the present utility model.

[0019] Explanation of the reference numerals in the drawings:

[0020] 1. Bottom plate; 2. Base; 3. Positioning member; 4. Intermediate body; 5. Support plate; 6. Notch; 7. Positioning rod; 8. Bearing; 9. Heat preservation part; 10. Heat insulation pad; 11. Extension part. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Embodiment 1:

[0022] Please refer to Figures 1-4 , a welding tool for a sealed-end pipeline, including a bottom plate 1. A vertical rod is fixedly connected to the top of the bottom plate 1. A bearing 8 is sleeved on the vertical rod, and the inner side surfaces of the vertical rod and the bearing 8 are fixedly connected. A base 2 is arranged on the upper part of the bottom plate 1. A bayonet is opened at the bottom of the base 2, and the bayonet and the base 2 are concentric. The outer side surface of the bearing 8 is clamped inside the bayonet. The bearing 8 ensures the smoothness when the base 2 rotates and reduces the friction force. A rotating port is opened in the middle of the bayonet, and the vertical rod is rotatably arranged inside the rotating port. The cooperation between the rotating port and the vertical rod prevents the entire gravity of the base 2 from acting on the bearing 8 and plays a protective role for the bearing 8.

[0023] An insulating pad 10 is installed on the base 2. The insulating pad 10 can prevent a large amount of heat generated during the welding of the labyrinth seal end and the pipeline from being transferred downward to the base 2, thus avoiding danger and improving safety. A positioning member 3 for fixing the seal end is installed on the top of the insulating pad 10. The positioning member 3 includes a positioning rod 7. The positioning rod 7 is vertically arranged on the base 2 and is located at a non-central position of the base 2. The positioning is achieved by inserting the positioning rod 7 into the positioning port at the bottom of the labyrinth seal end.

[0024] An intermediate body 4 is installed on the base 2. The intermediate body 4 is hollow. The intermediate body 4 is fixed to the outside of the base 2. The axis of the intermediate body 4 is concentric with the rotation axis of the base 2. A heat preservation part 9 is arranged on the inner side surface of the intermediate body 4. The heat preservation part 9 is annular. The heat preservation part 9 can prevent a large amount of heat generated during the welding of the labyrinth seal end and the pipeline from directly acting on the intermediate body 4, ensuring the safety of the intermediate body 4.

[0025] An extension part 11 is arranged on the outside of the intermediate body 4. The extension part 11 is annular, and a number of holes are opened on the extension part 11. The holes are used to reduce the weight of the extension part 11. A number of support plates 5 for supporting the pipeline are arranged on the top of the extension part 11. The number of support plates 5 is arranged in a circumferential array. Notches 6 for limiting the pipeline are opened on the support plates 5. The notches 6 are semi-circular, and the axis of the notches 6 passes through the extension line of the rotation axis of the base 2. The extension part 11 is used to extend the distance between the support plates 5 and the labyrinth seal end. Thus, when the pipeline is placed on the support plates 5, the support plates 5 can support the pipeline and will not tilt. The circumferentially arrayed support plates 5 can place multiple pipelines at the same time. The circular notches 6 can fit the outer diameter of the pipeline and play a limiting role at the same time, preventing the pipeline from rolling and falling.

[0026] Working principle:

[0027] Place the labyrinth seal end on the insulating pad 10. At the same time, insert the positioning rod 7 into the seal end. Align one end of the pipeline with the welding part of the labyrinth seal end. Then place the pipeline inside the notch 6. Weld the pipeline and the labyrinth seal end through welding equipment. After one pipeline is welded, the base 2 can be rotated to drive the labyrinth seal end and the pipeline to rotate, so as to rotate the welding part of the next pipeline and the labyrinth seal end to a suitable position for welding, avoiding the trouble of manual movement for position adjustment and improving efficiency.

Claims

1. A sealed end pipe welding tool, characterized in that: The invention comprises a bottom plate (1), a base (2) being rotatably connected to the bottom plate (1), a positioning member (3) for fixing the sealing end being installed on the base (2), an intermediate body (4) being installed on the base (2), the intermediate body (4) being hollow, the intermediate body (4) being fixed to the outside of the base (2), the axis of the intermediate body (4) being concentric with the rotation axis of the base (2), a plurality of support plates (5) for supporting the pipeline being arranged on the top of the intermediate body (4), the plurality of support plates (5) being arranged in a circular row, and a notch (6) for limiting the pipeline being opened on the support plate (5).

2. The sealed end pipe welding tool according to claim 1, characterized in that: The positioning member (3) comprises a positioning rod (7), and the positioning rod (7) is vertically arranged on the base (2).

3. The sealed end pipe welding tool according to claim 1, characterized in that: The bottom plate (1) and the base (2) are rotatably connected via a bearing (8).

4. The sealed end pipe welding tool according to claim 1, characterized in that: The notch (6) is semicircular, and the axis of the notch (6) passes through the extension line of the rotation axis of the base (2).

5. The sealed end pipe welding tool according to claim 1, characterized in that: The inner side surface of the intermediate body (4) is provided with a heat-insulating portion (9), and the heat-insulating portion (9) is ring-shaped.

6. The sealed end pipe welding tool according to claim 1, characterized in that: A heat insulation pad (10) is installed on the base (2).

7. The sealed end pipe welding tool according to claim 1, characterized in that: An extension portion (11) is provided outside the intermediate body (4), and the support plate (5) is fixed on the extension portion (11).

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