Explosion-proof combustible gas pipeline cutting machine

Abstract

The utility model provides an explosion-proof type combustible gas pipeline cutting machine. The explosion-proof type combustible gas pipeline cutting machine comprises a cutting machine body and a pair of chain type rails, wherein the chain type rails are used for installing the cutting machine body on the outer wall of a combustible gas pipeline and enabling the cutting machine body to walk in the circumferential direction of the outer wall of the combustible gas pipeline; a T-shaped milling cutter used for cutting a pipeline is installed at one end of the cutting machine body, and a high-pressure cooling mechanism used for cooling cutting heat generated when the T-shaped milling cutter cuts the pipeline is arranged at the top of the cutting machine body. An explosion-proof motor used for driving the cutting machine body and the T-shaped milling cutter at the same time is arranged in the cutting machine body. The combustible gas pipeline cutting device can effectively prevent combustible materials remaining in the pipeline from catching fire and exploding, and greatly improves safety in the combustible gas pipeline cutting construction process.

Description

Technical Field

[0001] The utility model belongs to the technical field of combustible gas pipeline construction, and specifically relates to an explosion-proof combustible gas pipeline cutting machine. Background Art

[0002] During the production process in the chemical product recovery workshop of the coking plant, combustible gas pipelines such as coke oven gas pipes need to be dismantled and repaired due to corrosion and other reasons. However, since there are a large amount of combustibles such as tar inside the coke oven gas pipeline, when the existing portable pipe cutting machine is used to cut the pipeline, sparks are likely to be generated during motor startup or the cutting process, which can easily cause the combustibles in the pipeline to burn or explode, and then cause fires or environmental pollution accidents, threatening the safety of operators.

[0003] In order to reduce the fire hazard during maintenance work in the chemical product recovery workshop of the coking plant, improve the safety of maintenance work, and improve the efficiency of maintenance work, it is necessary to design a cutting machine that is safe and reliable for combustible gas pipelines. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a safe and reliable explosion-proof combustible gas pipeline cutting machine in view of the deficiencies of the prior art.

[0005] In order to solve the above technical problems, the present invention includes:

[0006] An explosion-proof combustible gas pipeline cutting machine comprises a cutting machine body and a pair of chain-type rails for mounting the cutting machine body on the outer wall of the combustible gas pipeline and allowing the cutting machine body to move circumferentially along the outer wall of the combustible gas pipeline; a T-type milling cutter for cutting the pipeline is mounted at one end of the cutting machine body, and a high-pressure cooling mechanism for cooling the cutting heat generated by the T-type milling cutter when cutting the pipeline is arranged on the top of the cutting machine body; an explosion-proof motor for simultaneously driving the cutting machine body and the T-type milling cutter is arranged inside the cutting machine body.

[0007] Furthermore, the chain track is annular and its length is greater than the outer circumference of the combustible gas pipeline, and two chain tracks are sleeved on the outer wall of the combustible gas pipeline at intervals on the left and right.

[0008] Furthermore, a pair of driving wheels are symmetrically installed on the left and right sides of the bottom front end of the cutting machine body, a pair of driven wheels are symmetrically installed on the left and right sides of the bottom rear end of the cutting machine body, and a pair of first steering wheels are symmetrically installed on the left and right sides of the top rear end of the cutting machine body and located between the driving wheel and the driven wheel; a group of driving wheels, driven wheels and first steering wheels on the same left and right sides of the cutting machine body are assembled on a chain track, and the driving wheel and driven wheel are located on the outside of the chain track, and the first steering wheel is located on the inside of the chain track.

[0009] Furthermore, the driving wheel, the driven wheel and the first steering wheel are all sprockets, and are all meshed with the chain tracks on which they are located.

[0010] Furthermore, a pair of tensioners are symmetrically installed on the left and right sides of the front part of the cutting machine body and located in the front and upper part of the driving wheel, and each tensioner is equipped with a second steering wheel that can move forward and backward; the left and right second steering wheels are respectively assembled on the corresponding chain tracks, and the second steering wheels are located on the inner side of the chain track.

[0011] Furthermore, the second steering wheel is a sprocket and is meshed with the chain track on which it is located.

[0012] Furthermore, the output shaft of the explosion-proof motor is connected to the rotating shaft of the driving wheel and the T-type milling cutter respectively through a single-input-shaft and double-output-shaft reducer.

[0013] Furthermore, the high-pressure cooling mechanism has two high-pressure cooling nozzles which are tilted and pointed toward the front and rear ends of the T-shaped milling cutter respectively.

[0014] The beneficial effects of the utility model are:

[0015] The utility model adopts an explosion-proof motor to drive the cutting machine body to move and the T-type milling cutter to rotate and cut at the same time. The explosion-proof motor will not cause winding sparks when it is started. The outer wall of the combustible gas pipeline is cut by the milling cutter cutting method, and a high-pressure cooling mechanism that can spray coolant is used to cool the heat generated during the cutting process of the T-type milling cutter, thereby effectively preventing the ignition and explosion of the flammable materials remaining in the combustible gas pipeline, and greatly improving the safety of the combustible gas pipeline cutting construction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 It is a side view of the utility model;

[0018] Figure 3 This is the driving principle diagram of the utility model;

[0019] In the figure: 1. Cutting machine body, 2. Explosion-proof motor, 3. T-type milling cutter, 4. Driving wheel, 5. Driven wheel, 6. Chain track, 7. Second steering wheel, 8. Tensioner, 9. First steering wheel, 10. High-pressure cooling nozzle, 11. Combustible gas pipeline. DETAILED DESCRIPTION

[0020] To facilitate understanding of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Those skilled in the art should understand that the embodiments are only intended to help understand the present invention and should not be considered as specific limitations of the present invention.

[0021] Figure 1-3 As shown, the utility model provides an explosion-proof combustible gas pipeline cutting machine, comprising a cutting machine body 1 and a pair of chain-type rails 6 for installing the cutting machine body 1 on the outer wall of the combustible gas pipeline 11 and allowing the cutting machine body 1 to move circumferentially along the outer wall of the combustible gas pipeline 11; a T-type milling cutter 3 for cutting the pipeline is installed at one end of the cutting machine body 1, and a high-pressure cooling mechanism for cooling the cutting heat generated by the T-type milling cutter 3 when cutting the pipeline is arranged on the top of the cutting machine body 1; an explosion-proof motor 2 for simultaneously driving the cutting machine body 1 and the T-type milling cutter 3 is arranged inside the cutting machine body 1.

[0022] The output shaft of the explosion-proof motor 2 is connected to the rotating shafts of the driving wheel 4 and the T-type milling cutter 3 respectively through a single-input-shaft dual-output-shaft reducer. The rotating shafts of the driving wheel 4 and the T-type milling cutter 3 are parallel to the axial direction of the combustible gas pipeline 11, and the axial direction of the combustible gas pipeline 11 is also the left-right direction. The high-pressure cooling mechanism has two high-pressure cooling nozzles 10 that are tilted and pointed to the front and rear ends of the T-type milling cutter 3 respectively. The high-pressure cooling nozzles 10 spray coolant to the cutting point to cool the cutting heat.

[0023] The chain track 6 is annular and its length is greater than the outer circumference of the combustible gas pipeline 11, and two chain tracks 6 are sleeved on the outer wall of the combustible gas pipeline 11 at intervals on the left and right. A pair of driving wheels 4 are symmetrically installed on the left and right sides of the bottom front end of the cutting machine body 1, a pair of driven wheels 5 are symmetrically installed on the left and right sides of the bottom rear end of the cutting machine body 1, and a pair of first steering wheels 9 are symmetrically installed on the left and right sides of the top rear end of the cutting machine body 1 and located between the driving wheel 4 and the driven wheel 5; a group of driving wheels 4, driven wheels 5 and first steering wheels 9 on the same side of the left and right sides of the cutting machine body 1 are all assembled on a chain track 6, and the driving wheel 4 and driven wheel 5 are both located on the outside of the chain track 6, and the first steering wheel 9 is located on the inside of the chain track 6.

[0024] A pair of tensioners 8 are symmetrically installed on the left and right sides of the front of the cutting machine body 1 and located in front of the driving wheel 4. Each tensioner 8 is equipped with a second steering wheel 7 that can move forward and backward and is fixed; the left and right second steering wheels 7 are respectively assembled on the corresponding chain track 6, and the second steering wheel 7 is located on the inner side of the chain track 6.

[0025] The driving wheel 4, the driven wheel 5, the first steering wheel 9 and the second steering wheel 7 are all sprocket wheels, and are all meshed with the chain track 6 where they are located.

[0026] like Figure 3 The driving principle diagram of the utility model is shown, wherein gear I is fixedly mounted on the output shaft of the explosion-proof motor 2, gear II is fixedly mounted on one end of the first intermediate shaft, gear III is fixedly mounted on the shaft of the T-type milling cutter 3, and the intermediate shaft is parallel to the output shaft of the explosion-proof motor 2, the first intermediate shaft is perpendicular to the shaft of the T-type milling cutter 3, gear I is meshed with gear II, gear II is meshed with gear III, the explosion-proof motor 2 drives gear I to rotate, gear I is accelerated by gear II and gear III and drives the T-type milling cutter 3 to rotate; the other end of the intermediate shaft is fixed A gear IV is fixedly installed, gear IV meshes with gear V, gear V and gear VI are fixedly installed at both ends of the second intermediate rotating shaft, and the second intermediate rotating shaft is parallel to the first intermediate rotating shaft, gear VI is meshed with gear VII and gear VIII at the same time, gear VII and gear VIII are fixedly installed on the rotating shafts of two driving wheels 4, the rotating shafts of the driving wheels 4 are perpendicular to the second intermediate rotating shaft, the explosion-proof motor 2 drives gear I to rotate, and speed reduction is achieved through gear IV, gear V and gear VI, and gear VI drives gear VII and gear VIII to rotate at the same time, thereby realizing the rotation of the two driving wheels 4.

[0027] The utility model installs the cutting machine body 1 on the outer wall of the combustible gas pipeline 11 through a pair of chain tracks 6. The cutting machine body 1 has a pair of driving wheels 4 and a pair of driven wheels 5. The two driving wheels 4 rotate on the two chain tracks 6 respectively, driving the cutting machine body 1 to make a circular motion around the outer wall of the combustible gas pipeline 11; the first steering wheel 9 is used for chain steering, and the second steering wheel 7 is used to adjust the chain tension; a T-type milling cutter 3 is installed on the cutting machine body 1, which is used to rotate and cut the metal wall plate of the combustible gas pipeline 11; the explosion-proof motor 2 is used to drive the driving wheel 4 and the T-type milling cutter 3 at the same time, and a high-pressure cooling nozzle 10 is used to spray water mist on the surface of the combustible gas pipeline 11 to cool the cutting heat of the T-type milling cutter 3. Therefore, the utility model can safely and reliably cut the combustible gas (liquid) pipeline quickly, and the whole cutting process will not generate sparks, reducing the potential risks of fire or explosion.

[0028] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An explosion-proof combustible gas pipeline cutting machine, characterized in that: The invention comprises a cutting machine body (1) and a pair of chain-type rails (6) for mounting the cutting machine body (1) on the outer wall of a combustible gas pipeline (11) and allowing the cutting machine body (1) to move along the circumference of the outer wall of the combustible gas pipeline (11); a T-shaped milling cutter (3) for cutting the pipeline is mounted on one end of the cutting machine body (1), and a high-pressure cooling mechanism for cooling cutting heat generated by the T-shaped milling cutter (3) when cutting the pipeline is disposed on the top of the cutting machine body (1); and an explosion-proof motor (2) for simultaneously driving the cutting machine body (1) and the T-shaped milling cutter (3) is disposed inside the cutting machine body (1).

2. The explosion-proof combustible gas pipe cutting machine according to claim 1, characterized in that: The chain-type rail (6) is annular and has a length greater than the outer circumference of the combustible gas pipeline (11), and two chain-type rails (6) are sleeved on the outer wall of the combustible gas pipeline (11) at intervals on the left and right.

3. The explosion-proof combustible gas pipe cutting machine according to claim 2, characterized in that: A pair of driving wheels (4) are symmetrically mounted on the left and right sides of the bottom front end of the cutting machine body (1), a pair of driven wheels (5) are symmetrically mounted on the left and right sides of the bottom rear end of the cutting machine body (1), and a pair of first steering wheels (9) are symmetrically mounted on the left and right sides of the top rear end of the cutting machine body (1) and located between the driving wheel (4) and the driven wheel (5); a group of driving wheels (4), driven wheels (5) and first steering wheels (9) on the same left and right sides of the cutting machine body (1) are all assembled on a chain track (6), and the driving wheel (4) and the driven wheel (5) are both located on the outside of the chain track (6), and the first steering wheel (9) is located on the inside of the chain track (6).

4. The explosion-proof combustible gas pipe cutting machine according to claim 3, characterized in that: The driving wheel (4), the driven wheel (5) and the first steering wheel (9) are all sprocket wheels, and are all meshed with the chain track (6) on which they are located.

5. The explosion-proof combustible gas pipeline cutting machine according to claim 3 is characterized in that: A pair of tensioners (8) are symmetrically mounted on the left and right sides of the front part of the cutting machine body (1) and located above and in front of the driving wheel (4), and each tensioner (8) is mounted with a second steering wheel (7) that can move forward and backward; the left and right second steering wheels (7) are respectively mounted on corresponding chain tracks (6), and the second steering wheels (7) are located on the inner side of the chain track (6).

6. The explosion-proof combustible gas pipe cutting machine according to claim 5, characterized in that: The second steering wheel (7) is a sprocket wheel and is meshed with the chain track (6) on which it is located.

7. The explosion-proof combustible gas pipe cutting machine according to claim 3, characterized in that: The output shaft of the explosion-proof motor (2) is respectively connected to the driving wheel (4) and the rotating shaft of the T-shaped milling cutter (3) via a single-input-shaft and double-output-shaft reducer.

8. The explosion-proof combustible gas pipeline cutting machine according to claim 1, characterized in that: The high-pressure cooling mechanism comprises two high-pressure cooling nozzles (10) which are respectively inclined and directed towards the front and rear ends of the T-shaped milling cutter (3).

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