CN115681663A - A vertical pipeline cutting device and method - Google Patents

Abstract

The invention relates to the technical field of vertical pipeline cutting, in particular to a vertical pipeline cutting device and a vertical pipeline cutting method. The vertical pipeline cutting device comprises two expansion devices and a blind plate, wherein the expansion devices are used for expanding a vertical pipeline to be cut off, and the blind plate is inserted into a part to be cut off and is connected with a connecting flange on the vertical pipeline through a bolt to cut off the vertical pipeline; the invention comprises the following steps: removing connecting bolts on a connecting flange of a vertical pipeline to be cut off, expanding the deblocking part of the connecting flange through an expansion device, and inserting a blind plate into the joint of the connecting flange when the width of a gap at the joint of the connecting flange is expanded to be larger than the thickness of the blind plate; and the connecting bolts penetrate through the connecting flanges and the through holes in the blind plates and then are screwed down to finish the cutting of the vertical pipeline. The invention greatly facilitates the maintenance of the vertical pipeline and solves the problem that any section of the vertical pipeline cannot be blocked only by the valve blocking in the prior art.

Description

A vertical pipeline cutting device and method

technical field

The invention relates to the technical field of vertical pipeline cutting, in particular to a vertical pipeline cutting device and method.

Background technique

A pipeline is a device used to transport gas, liquid or fluid with solid particles connected by pipes, pipe connectors and valves. Usually, after the fluid is pressurized by blowers, compressors, pumps and boilers, it flows from the high-pressure part of the pipeline to the low-pressure part, and it can also be transported by the pressure or gravity of the fluid itself. Pipes are widely used, mainly in water supply, drainage, heat supply, gas supply, long-distance transportation of oil and natural gas, agricultural irrigation, hydraulic engineering and various industrial devices.

Among them, the vertical pipeline used for fluid transportation needs to be cut off when a problem occurs. In the prior art, valves are often used to cut it off. When there is no valve near the position of the pipeline that needs to be repaired, it cannot be cut off, and the valve is sealed. When the degree is not tight, the vertical pipeline cannot be effectively cut off. The vertical pipeline in the prior art is usually connected by connecting flanges under the action of connecting bolts. Cutting off at the connecting flange is a feasible solution, so a A vertical pipe cutting device that solves the above problems.

Contents of the invention

The technical problem solved by the present invention is to provide a vertical pipeline cutting device and method, which greatly facilitates the maintenance of the vertical pipeline, and solves the problem that the existing technology cannot block any section of the vertical pipeline simply by relying on valve blocking. question.

The technical scheme adopted in the present invention:

A vertical pipe cutting device, comprising two expansion devices and a blind plate, the expansion device is used to expand the vertical pipe to be cut off, the blind plate is inserted into the part to be cut, and the bolt is connected to the vertical pipe Connect the flange connection to realize the truncation of the vertical pipeline.

The expansion device includes a puller body, a threaded barrel, an adjustment ring, a connecting part, a connecting rod, a draw hook, and an expansion wedge. The puller body is a hydraulic puller, and the threaded barrel is sleeved on the telescopic shaft at the front end of the puller body, and Fixedly installed on the puller body; the adjusting ring is occluded on the threaded barrel, the connecting part is fixedly installed on both sides of the adjusting ring, the connecting rod is rotatably installed on the adjusting ring, and the pull hook is rotatably hinged on the outer end of the connecting rod; the expansion wedge is fixed Installed on the front end of the telescopic shaft of the puller body.

The front end of the drag hook is provided with a protrusion, through which the hook is hooked into the bolt hole of the connecting flange.

The adjustment ring is a tubular structure provided with an internal thread corresponding to the thread on the outer wall of the threaded cylinder. Through the connecting part, the connecting rod and the draw hook, the part hooked by the draw hook remains hooked when it expands in the up and down direction. Rotate the threaded cylinder to adjust the front and rear positions of the pull hook.

The adjusting ring is provided with a screw block, and the screw block is fixedly installed on the outer surface of the adjusting ring, and the adjusting ring is conveniently screwed by the screw block to increase the length of the force arm when screwing.

The expansion wedge is provided with a connecting threaded rod, and the connecting threaded rod is engaged and inserted on the expansion wedge and is engaged and inserted on the front end of the telescopic shaft of the puller body.

The blind plate corresponds to the shape of the connecting flange of the vertical pipeline. The blind plate is provided with a cutting area, which is a plane structure on both sides of the blind plate. The blind plate is provided with a perforation, and the perforation is opened on the blind plate. And corresponding to the position of the connecting bolts on the connecting flange of the vertical pipeline, the cutting area makes the connecting bolts on both sides fall outside the blind plate.

A method for cutting a vertical pipeline, comprising the steps of:

Step 1: Close the nearest valve of the vertical pipeline to initially block the vertical pipeline;

Step 2: Remove the connecting bolts on the connecting flange where the vertical pipeline needs to be cut off;

Step 3: Hook the hooks on the two expansion devices respectively on the perforations of the upper and lower connecting bolts on both sides of the connecting flange;

Step 4: Operate the puller body so that the front end of the expansion wedge is aligned with the connection joint of the connecting flange on the vertical pipe, drive the two puller bodies so that the telescopic end of the puller body drives the expansion wedge out, and the expansion wedge Expansion at the unsealing part of the connecting flange;

Step 5: When the width of the gap at the joint of the connecting flange expands to be greater than the thickness of the blind plate, insert the blind plate into the joint of the connecting flange;

Step 6: Operate the main body of the puller to take out the two expansion devices, then use the connecting bolts to pass through the holes in the connecting flange and the blind plate, and then tighten them to complete the vertical pipe truncation.

Compared with prior art, the beneficial effect of the present invention is:

(1) A vertical pipeline cutting device and method provided by the present invention, through two expansion devices at the position of the connecting hole of the connecting bolt that hooks the drag hook on the connecting flange of the vertical pipeline, and then realizes the pulling of the puller body force attachment;

(2) A vertical pipe cutting device and method provided by the present invention, by operating the puller body to drive the telescopic end and then drive the expansion wedge to expand the joint of the connecting flange, insert the blind plate, and then realize the cutting of the vertical pipe ;

(3) A vertical pipeline cutting device and method provided by the present invention facilitates the insertion of the blind plate through the cutting area of the blind plate, facilitates the connection of the connecting flange under the action of the connecting bolt through the perforation, and fixes the position of the blind plate to achieve Positioning of the blind plate;

(4) A vertical pipeline cutting device and method provided by the present invention, compared with the prior art, the present invention can cut off any connecting part of the vertical pipeline, which greatly facilitates the maintenance of the vertical pipeline and solves the problem of In the prior art, it is impossible to block any section of the vertical pipeline simply by relying on valve blocking.

Description of drawings

Fig. 1 is a schematic structural view of the expansion device in the vertical pipeline cutting device of the present invention;

Fig. 2 is a schematic diagram of the blind plate structure in the vertical pipeline cutting device of the present invention;

Fig. 3 is a schematic diagram of the use state of the vertical pipeline cutting device of the present invention.

In the figure, 1. Blind plate; 2. Puller body; 3. Thread barrel; 4. Adjusting ring; 5. Connecting part; 6. Connecting rod; 7. Pull hook; Perforation; 11, screw block; 12, connecting threaded rod.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper/lower end", "inner", "outer", "front end", "rear end", "both ends", "one end", "another end" etc. indicate The orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation or be configured in a specific orientation. and operation, and therefore should not be construed as limiting the invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and should not be understood as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "setting/setup", "socketing", "connection", etc. should be understood in a broad sense, for example "Connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be two components Internal connectivity. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

A vertical pipeline cutting device provided by the present invention includes two expansion devices and a blind plate 1. As shown in FIG. , connecting rod 6, drag hook 7, expansion wedge 8, the puller body 2 is a hydraulic puller, and the threaded cylinder 3 is sleeved on the telescopic shaft at the front end of the puller body 2, and is fixedly installed on the puller body 2; the adjustment ring 4. The occlusal sleeve is fitted on the threaded cylinder 3. The connecting part 5 is fixedly installed on both sides of the adjusting ring 4. The connecting rod 6 is rotatably installed on the adjusting ring 4. The pull hook 7 is rotatably hinged on the outer end of the connecting rod 6; the expansion wedge 8 is fixedly installed On the retractable end of the puller body 2;

The front end of the pull hook 7 is provided with a protrusion, through which the protrusion is hooked into the bolt hole of the connecting flange;

The adjustment ring 4 is a tubular structure provided with an internal thread corresponding to the thread on the outer wall of the threaded cylinder 3. Through the connecting part 5, the connecting rod 6 and the draw hook 7, the part hooked by the draw hook 7 can still be kept hooked when expanding in the up and down direction. In the locked state, the adjusting ring 4 rotates on the threaded cylinder 3 to adjust the front and rear positions of the draw hook 7, so that the draw hook 7 can be hooked on the connecting flange.

As shown in Figure 2, the blind plate 1 corresponds to the shape of the connecting flange of the vertical pipeline, and the blind plate 1 is provided with a cutting area 9, which is a plane structure on both sides of the blind plate 1. A perforation 10 is provided, and the perforation 10 is opened on the blind plate 1 and corresponds to the position of the connecting bolt on the connecting flange of the vertical pipeline. The cutting area 9 makes the connecting bolts on both sides fall outside the blind plate 1 and pass through the cutting area 9 When the expansion wedge 8 is inserted into the slot on the connecting flange, the expansion wedge 8 does not interfere with the insertion of the blind plate 1 .

As shown in Figure 3, the adjusting ring 4 is provided with a screw block 11, the screw block 11 is fixedly installed on the outer surface of the adjusting ring 4, and the screwing block 11 facilitates the screwing of the adjusting ring 4 to increase the length of the force arm when screwing .

The expansion wedge 8 is provided with a connecting threaded rod 12, and the connecting threaded rod 12 is interlocked and inserted on the expansion wedge 8 and interlocked and inserted on the telescopic end of the puller body 2, and then the expansion wedge 8 and the puller body 2 are telescopically connected. The end is fixedly connected, and the expansion wedge 8 is conveniently disassembled by connecting the threaded rod 12. When expanding different vertical pipes and connecting flanges, it is convenient to replace the expansion wedge 8 of different specifications.

A method for cutting a vertical pipeline, comprising the steps of:

Step 1: Close the nearest valve of the vertical pipeline, and initially block the vertical pipeline to prevent a large amount of fluid from overflowing when the device is working;

Step 2: Remove the connecting bolts on the connecting flange where the vertical pipeline needs to be cut off, so that the hook can be hooked;

Step 3: Hook the pull hooks on the two expansion devices on the perforations of the upper and lower connecting bolts on both sides of the connecting flange respectively, and limit the position of the puller body on the expansion device;

Step 4: Operate the puller body so that the front end of the expansion wedge is aligned with the connection joint of the connecting flange on the vertical pipe, drive the two puller bodies so that the telescopic end of the puller body drives the expansion wedge out, and the expansion wedge Expansion at the unsealing part of the connecting flange;

Step 5: When the width of the gap at the joint of the connecting flange expands to be greater than the thickness of the blind plate, insert the blind plate into the joint of the connecting flange. When inserting, the cutting area can be directed toward the side of the expansion wedge, thereby avoiding the expansion wedge Interference with the insertion of the blind plate;

Step 6: Operate the main body of the puller to take out the two expansion devices, then use the connecting bolts to pass through the holes in the connecting flange and the blind plate, and then tighten them to complete the vertical pipe truncation.

It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is a relationship between these entities or operations. There is no such actual relationship or order between them. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device. without further restrictions. The phrase "the inclusion of an element defined by ... does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising said element".

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (8)

1. The utility model provides a vertical pipeline cuts device, its characterized in that includes two expanding unit and a blind plate (1), the expanding unit is used for the vertical pipeline expansion that will wait to cut, blind plate (1) inserts and waits to cut the position, is connected through the flange on bolt and the vertical pipeline, realizes cutting vertical pipeline.

2. The vertical pipeline cutting device according to claim 1, wherein the expanding device comprises a puller body (2), a threaded cylinder (3), an adjusting ring (4), a connecting part (5), a connecting rod (6), a draw hook (7) and an expanding wedge (8), the puller body (2) is a hydraulic puller, the threaded cylinder (3) is sleeved on a telescopic shaft at the front end of the puller body (2) and is fixedly installed on the puller body (2); the adjusting ring (4) is meshed and sleeved on the threaded cylinder (3), the connecting part (5) is fixedly arranged on two sides of the adjusting ring (4), the connecting rod (6) is rotatably arranged on the adjusting ring (4), and the draw hook (7) is rotatably hinged to the outer end of the connecting rod (6); the expansion wedge (8) is fixedly arranged at the front end of the telescopic shaft of the puller body (2).

3. The vertical pipe cutting device according to claim 2, wherein the front end of the draw hook (7) is provided with a protrusion, and the protrusion and the hook are hooked in the bolt hole of the connecting flange through the protrusion.

4. The vertical pipe cutting device according to claim 3, wherein the adjusting ring (4) is a tubular structure provided with an internal thread corresponding to the thread of the outer wall of the threaded cylinder (3), the part hooked by the draw hook (7) is still kept hooked when the part is expanded in the vertical direction through the connecting part (5), the connecting rod (6) and the draw hook (7), and the adjusting ring (4) rotates on the threaded cylinder (3) to adjust the front and rear positions of the draw hook (7).

5. The vertical pipeline cutting device according to claim 4, wherein the adjusting ring (4) is provided with a screwing block (11), the screwing block (11) is fixedly arranged on the outer surface of the adjusting ring (4), and the screwing block (11) is used for facilitating the screwing of the adjusting ring (4) to increase the length of the force arm during screwing.

6. The vertical pipeline cutting device according to claim 2, wherein the expansion wedge (8) is provided with a connecting threaded rod (12), and the connecting threaded rod (12) is inserted on the expansion wedge (8) in an occlusion manner and is inserted at the front end of the telescopic shaft of the puller body (2) in an occlusion manner.

7. The vertical pipeline cutting device according to claim 1, wherein the blind plate (1) corresponds to a connecting flange of a vertical pipeline in shape, a cutting area (9) is arranged on the blind plate (1), the cutting area (9) is a plane structure on two sides of the blind plate (1), a through hole (10) is arranged on the blind plate (1), the through hole (10) is formed in the blind plate (1) and corresponds to the connecting bolt on the connecting flange of the vertical pipeline in position, and the connecting bolts on two sides fall out of the blind plate (1) due to the cutting area (9).

8. A vertical pipeline cutting method is characterized by comprising the following steps:

the method comprises the following steps: closing a nearest valve of the vertical pipeline, and primarily blocking the vertical pipeline;

step two: dismantling a connecting bolt on a connecting flange of a vertical pipeline part needing to be cut off;

step three: respectively hooking the drag hooks on the two expansion devices on the through holes of the upper connecting bolt and the lower connecting bolt on the two sides of the connecting flange;

step four: operating the puller bodies to enable the front ends of the expansion wedges to be aligned to the connecting seams of the connecting flanges on the vertical pipelines, driving the two puller bodies to enable the telescopic ends of the puller bodies to drive the expansion wedges to extend out, and expanding the deblocking positions of the connecting flanges by the expansion wedges;

step five: when the width of the gap at the joint of the connecting flange is expanded to be larger than the thickness of the blind plate, inserting the blind plate into the joint of the connecting flange;

step six: and operating the puller body to take out the two expansion devices, penetrating through the through holes on the connecting flange and the blind plate by using the connecting bolt, and screwing down to finish the truncation of the vertical pipeline.

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