A pressure vessel cylinder inner wall heating tool

Abstract

The present invention discloses a tool for heating the inner wall of a pressure vessel cylinder: it includes a connecting rod, a sleeve, a rotating support, a leg and a sliding seat, a burner is provided on the side of the connecting rod and one end is connected to the sleeve, the other end of the connecting rod is connected to the base, the outer part of the sleeve is connected to the rotating support through a bearing, there are at least three legs, one end of the leg is hinged to the rotating support, the other end is provided with a guide wheel for axially rolling along the inner wall of the pressure vessel, a screw is also provided at the end center of the rotating support, the sliding seat is sleeved on the screw, the screw is also connected to the nut through a thread, the nut is connected to the sliding seat, and the sliding seat is hinged to the leg through a support rod. Compared with the prior art, the present invention can support the inner wall of the product through the leg, when the burner is operated to rotate, the distance between the burner and the inner wall of the pressure vessel remains unchanged, the present invention can make the guide wheel roll along the axial direction of the pressure vessel by operating the connecting rod, so that the burner can be placed in different heating positions to meet the heating needs of different parts.

Description

Technical Field

[0001] The invention relates to the technical field of pressure vessel processing tooling, and in particular to a pressure vessel cylinder inner wall heating tooling. Background Art

[0002] When welding the circumferential seam of the pressure vessel cylinder, in order to ensure the welding quality, the welding part needs to be preheated before and heated after welding. Due to the long length of the pressure vessel, the burner is in a cantilever beam state when it penetrates into the position to be heated, and will sag due to gravity. In this way, when the burner rotates along the welding part, the distance between the burner and the inside of the cylinder will be unequal. When the distance between the two is unequal, it is impossible to ensure uniform heating of the welding part.

[0003] The following methods are often used in the prior art to improve the above problem: one is to increase the strength and rigidity of the connecting rod to reduce the droop of the burner; the other is to set a support device inside the container to support the connecting rod. The former cannot fundamentally solve the problem, and the latter support device cannot meet the adjustment of the axis position and cannot meet the processing requirements of pressure vessels of different sizes. Summary of the invention

[0004] In order to solve the deficiencies in the prior art, the present invention provides a pressure vessel cylinder inner wall heating tool, which solves the technical problem of uneven heating of the cylinder annular seam during the processing of the pressure vessel in the prior art.

[0005] In order to achieve the above object, the present invention adopts the following technical solution:

[0006] A tool for heating the inner wall of a pressure vessel cylinder: it includes a connecting rod, a sleeve, a rotating support, a leg and a sliding seat. The side of the connecting rod is provided with a burner and one end is connected to the sleeve, the other end of the connecting rod is connected to the base, the outside of the sleeve is connected to the rotating support through a bearing, there are at least three legs, one end of the leg is hinged to the rotating support, and the other end is provided with a guide wheel for axial rolling along the inner wall of the pressure vessel, a screw is also provided at the end center of the rotating support, the sliding seat is sleeved on the screw, the screw is also connected to the nut through a thread, the nut is connected to the sliding seat, and the sliding seat is hinged to the leg through a support rod.

[0007] Preferably, the aforementioned tooling for heating the inner wall of a pressure vessel cylinder: a wedge clamp is provided at the end of the sleeve, a wedge-shaped tapered hole matching the outer surface of the wedge clamp is provided at the threaded sleeve, and the threaded sleeve is connected to the wedge clamp by threads.

[0008] Preferably, the aforementioned pressure vessel cylinder inner wall heating tool: the connecting rod includes a connecting rod 1 and a connecting rod 2 arranged in series, the connecting rod 2 is connected to the sleeve and the burner, and the connecting rod 1 is connected to the base.

[0009] Preferably, the aforementioned pressure vessel cylinder inner wall heating tool has a plurality of connecting rods, and the plurality of connecting rods are arranged in series.

[0010] Preferably, in the aforementioned tooling for heating the inner wall of a cylinder of a pressure vessel: a spring sleeved on the screw rod is further provided between the nut and the sliding seat.

[0011] Preferably, in the aforementioned tooling for heating the inner wall of a pressure vessel cylinder: the connecting rod is also provided with a scale for displaying the depth of the burner.

[0012] Preferably, in the aforementioned tooling for heating the inner wall of a cylinder of a pressure vessel: a flange is provided at the end of a connecting rod 1, and adjacent connecting rods 1 are connected by the flange.

[0013] Preferably, the aforementioned tooling for heating the inner wall of a pressure vessel cylinder includes four wedge clamps, which are symmetrically and evenly distributed around the axis of the sleeve.

[0014] Preferably, the aforementioned pressure vessel cylinder inner wall heating tool has four legs, which are evenly distributed with the center of the rotating support as the axis.

[0015] Preferably, in the aforementioned tooling for heating the inner wall of the cylinder of a pressure vessel: a washer is further provided between the spring and the nut and the sliding seat.

[0016] The beneficial effects achieved by the present invention are:

[0017] Compared with the prior art, the present invention can support the inner wall of the product through the legs. Since the four legs are in a state of synchronous movement, no matter what angle the four legs are at, the connecting rod is in the center position of the pressure vessel. When the burner is operated to rotate, the distance between the burner and the inner wall of the pressure vessel remains unchanged. Uniform heating can be achieved by simply rotating the connecting rod at a constant speed.

[0018] The invention can make the guide wheel roll along the axial direction of the pressure vessel by operating the connecting rod, so that the burner can be placed in different heating positions to meet the heating requirements of different parts. When heating a certain cylinder annular seam, it is only necessary to fix the connecting rod.

[0019] The present invention can meet the heating requirements of products with different inner diameters within a certain range. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is an axial cross-sectional view of the overall structure of the present invention;

[0021] Figure 2 yes Figure 1 Sectional view of the AA plane;

[0022] The meaning of the accompanying drawings: 1-pressure vessel; 2-base; 3-connecting rod one; 4-connecting rod two; 5-sleeve; 6-rotating support; 7-leg; 8-sliding seat; 9-threaded sleeve; 41-burner; 51-bearing; 52-wedge clamp; 61-screw; 62-nut; 63-spring; 71-guide wheel; 81-support rod. DETAILED DESCRIPTION

[0023] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0024] like Figure 1 and Figure 2 As shown: This embodiment discloses a tool for heating the inner wall of a pressure vessel cylinder, comprising a connecting rod, a sleeve 5, a rotating support 6, a leg 7 and a sliding seat 8. A burner 41 is provided on the side of the connecting rod and one end is connected to the sleeve 5. The other end of the connecting rod is connected to the base 2. The outer part of the sleeve 5 is connected to the rotating support 6 through a bearing 51. There are at least three legs 7. One end of the leg 7 is hinged to the rotating support 6, and the other end is provided with a guide wheel 71 for axially rolling along the inner wall of the pressure vessel. A screw 61 is also provided at the end center of the rotating support 6. The sliding seat 8 is sleeved on the screw 61. The screw 61 is also connected to the nut 62 through a thread. The nut 62 is connected to the sliding seat 8. The sliding seat 8 is hinged to the leg 7 through a support rod 81. That is to say, the two ends of the support rod 81 are respectively hinged to the sliding seat 8 and the leg 7. It is best to have four legs 7, and the four legs 7 are evenly distributed with the center of the rotating support 6 as the axis.

[0025] The connection method between the connecting rod and the sleeve 5 is: a wedge clamp 52 is provided at the end of the sleeve 5, and the threaded sleeve 9 is provided with a wedge-shaped tapered hole matching the outer surface of the wedge clamp 52. The threaded sleeve 9 is connected to the wedge clamp 52 by threads. When the threaded sleeve 9 is tightened, the connecting rod can be clamped by the wedge clamp 52.

[0026] The connecting rod includes a connecting rod 1 3 and a connecting rod 2 4 arranged in series. The connecting rod 2 4 is connected to the sleeve 5 and the burner 41. There are multiple connecting rods 1 3. When different numbers of connecting rods 1 3 are installed to meet the processing requirements of pressure vessels of different depths, multiple connecting rods 1 3 are arranged in series, and flanges can be set at both ends of the connecting rod 1 3. Adjacent connecting rods 1 3 are connected by flanges.

[0027] The connecting rod 3 is connected to the base 2, and the base 2 is used to provide combustible gas to the burner 41 and control its working state.

[0028] Since there are certain errors in the inner wall of the pressure vessel and the surface cannot be absolutely smooth, there will be slight errors in its actual inner diameter. In order to ensure that the guide wheel 71 always fits the inner surface of the product, this embodiment also provides a spring 63 that is sleeved on the screw 61 between the nut 62 and the sliding seat 8, and a gasket is provided between the spring 63 and the nut 62 and the sliding seat 8. The preload force generated by the spring 63 ensures that the guide wheel 71 always has an elastic force that fits the inner surface of the product. The elastic preload force can compensate for the dimensional changes of the inner wall of the product within a certain range.

[0029] In order to enable the operator to know the depth of the burner 41, the connecting rod of this embodiment is also provided with a scale for displaying the depth of the burner 41, and the scale can be set on the connecting rod 3.

[0030] like Figure 2 As shown: there are four wedge clamps 52 in this embodiment, and the four wedge clamps 52 are symmetrically and evenly distributed around the axis of the sleeve 5.

[0031] When in use, the sleeve 5 is clamped on the connecting rod 4 by rotating the threaded sleeve 9, and then the nut is rotated according to the inner diameter of the container, so that the size of the four guide wheels 71 is slightly larger than the inner diameter of the pressure container, so that the spring 63 can make the guide wheels 71 enter the interior of the pressure container 1 with a certain elastic force, and the elasticity can compensate for the changes in the inner wall size and roughness of the product. Then the Rongguo base 2 rotates the connecting rod to heat the product through the burner 41.

[0032] Compared with the prior art, this embodiment can support the inner wall of the product through the legs 7. Since the four legs 7 are in a state of synchronous movement, no matter what angle the four legs 7 are at, the connecting rod is at the center position of the pressure vessel 1. When the burner 41 is operated to rotate, the distance between the burner 41 and the inner wall of the pressure vessel 1 remains unchanged. Uniform heating can be achieved by simply rotating the connecting rod at a constant speed.

[0033] In this embodiment, the burner 41 can be placed in different heating positions by operating the connecting rod to make the guide wheel 71 roll along the axial direction of the pressure vessel 1, thereby meeting the heating requirements of different parts. When heating a certain annular seam of the cylinder, it is only necessary to fix the connecting rod.

[0034] This embodiment can meet the heating requirements of products with different inner diameters within a certain range.

[0035] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A pressure vessel cylinder inner wall heating tool, characterized in that: The invention comprises a connecting rod, a sleeve (5), a rotating support (6), a leg, a sliding seat (8) and a threaded sleeve (9); a burner (41) is provided on the side of the connecting rod and one end is connected to the sleeve (5); a wedge clamp is provided at the end of the sleeve (5); the threaded sleeve (9) is provided with a wedge-shaped tapered hole matching the outer surface of the wedge clamp; the threaded sleeve (9) is connected to the wedge clamp by means of threads; the other end of the connecting rod is connected to a base (2); the outside of the sleeve (5) is connected to the rotating support (6) by means of a bearing (51); the leg has at least three legs; One end of the leg is hinged to the rotating support (6), and the other end is provided with a guide wheel (71) for axially rolling along the inner wall of the pressure vessel. A screw rod (61) is also provided at the center of the end of the rotating support (6). The sliding seat (8) is sleeved on the screw rod (61). The screw rod (61) is also connected to a nut (62) through a thread. The nut (62) is connected to the sliding seat (8). A spring (63) sleeved on the screw rod (61) is also provided between the nut (62) and the sliding seat (8). The sliding seat (8) is hinged to the leg through a support rod (81).

2. A pressure vessel cylinder inner wall heating tool according to claim 1, characterized in that: The connecting rod comprises a connecting rod 1 and a connecting rod 2 (4) which are arranged in series, the connecting rod 2 (4) being connected to a sleeve (5) and a burner (41), and the connecting rod 1 being connected to a base (2).

3. A pressure vessel cylinder inner wall heating tool according to claim 2, characterized in that: There are multiple connecting rods, and the multiple connecting rods are arranged in series.

4. The inner wall heating tool for a pressure vessel cylinder according to claim 1, characterized in that: The connecting rod is also provided with a scale for displaying the depth of the burner (41).

5. The inner wall heating tool for a pressure vessel cylinder according to claim 3, characterized in that: The end of the connecting rod 1 is provided with a flange, and adjacent connecting rods 1 are connected through the flange.

6. The inner wall heating tool for a pressure vessel cylinder according to claim 1, characterized in that: There are four wedge clamps, and the four wedge clamps are symmetrically and evenly distributed around the axis of the sleeve (5).

7. The inner wall heating tool for a pressure vessel cylinder according to claim 1, characterized in that: There are four supporting legs, and the four supporting legs are evenly distributed with the center of the rotating support (6) as the axis.

8. The inner wall heating tool for a pressure vessel cylinder according to claim 1, characterized in that: A washer is also provided between the spring (63), the nut (62) and the sliding seat (8).

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