A plugging device for coal bed methane pipelines

Abstract

The utility model discloses a kind of for coalbed gas pipeline's leaking stoppage device, it is related to coalbed gas pipeline leaking stoppage technical field.The utility model includes first half arc ring, and first half arc ring is provided with leaking stoppage mechanism and fixed mechanism;Leaking stoppage mechanism includes adjusting assembly, plugging assembly and air bag assembly, adjusting assembly includes the second half arc ring being arranged in first half arc ring, first spring is fixedly connected with limit ring, and limit ring is fixedly connected with sealing cover.The utility model passes through leaking stoppage mechanism, using the elastic force of first spring, staff can be aligned with two air inlets by rotating sealing cover, plugging assembly is inflated to make it expand and block the leakage hole of pipeline, complete leaking stoppage processing, wherein rotating sealing cover changes the plugging state of plugging block to air inlet, selectively release or fill air bag changes air bag expansion size, for adapting to the leakage hole of different aperture pipeline, improve the application range of device.

Description

TECHNICAL FIELD

[0001] The utility model belongs to coal bed gas pipeline leak stoppage technical field, especially is involved in a kind of leak stoppage device for coal bed gas pipeline. BACKGROUND

[0002] Coal bed gas is commonly known as "gas", refers to the storage in coal with methane as main component, with adsorption in coal matrix particle surface as main, part free in coal pore or dissolved in coal seam water Hydrocarbon gas, is the associated mineral resources of coal, belongs to unconventional natural gas, is the clean, high-quality energy and chemical raw material that rise in international in recent years, its calorific value is equivalent to natural gas, can be mixed with natural gas, and after burning, it is very clean, almost no waste gas, is the good industrial, chemical, power generation and residential fuel, coal bed gas air concentration reaches 5%-16%, meets open fire and will explode, this is the root of coal mine gas explosion accident, if coal bed gas is directly discharged into atmosphere, its greenhouse effect is about twenty times of carbon dioxide, and the ecological environment is extremely strong in destructiveness.

[0003] But part for leak stoppage coal bed gas transport pipeline's device leak stoppage subassembly structure is relatively simple, usually adopts rubber plug to block the leakage hole of coal bed gas pipeline, due to coal bed gas pipeline leakage belongs to unexpected accident, so that leakage hole size is not one, and the diameter of rubber plug is relatively fixed, so when the leakage hole with larger diameter than rubber plug appears, this kind of device is difficult to adjust leak stoppage according to the size of leakage hole in real time. UTILITY MODEL CONTENT

[0004] The utility model discloses a kind of leak stoppage devices for coal bed gas pipeline, by being provided with leak stoppage mechanism, staff can be mutually aligned by rotating sealing cover two air inlets, the leakage hole of pipeline is plugged by inflating air bag and expanding, rotating sealing cover changes the plugging state of plugging block to lower side air inlet, selectively release or fill the total amount of gas inside air bag changes air bag expansion size, for the pipeline leakage hole of different aperture, solved the problem that rubber plug is difficult to adjust leak stoppage according to the size of leakage hole in real time by plugging the leakage hole of coal bed gas pipeline.

[0005] To solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model discloses a kind of leak stoppage devices for coal bed gas pipeline, including the first half arc ring, the first half arc ring is provided with leak stoppage mechanism and fixed mechanism;

[0007] The plugging mechanism comprises an adjusting assembly, a plugging assembly and an air bag assembly, the adjusting assembly comprises a second half-arc-shaped ring arranged below a first half-arc-shaped ring, an outer wall of the first half-arc-shaped ring is fixedly connected with an inflation pipe, a first spring groove is formed in an outer wall of the inflation pipe, a first spring is fixedly connected to an inner wall of the first spring groove, a limiting ring is fixedly connected to a bottom end of the first spring, an inner wall of the limiting ring is slidably connected with an outer wall of the first spring groove, and an outer wall of the limiting ring is fixedly connected with a sealing cover

[0008] Further, the plugging assembly comprises two air inlet holes formed in the top surface of the sealing cover and the inflation pipe, an inner wall of the sealing cover is fixedly connected with a plugging block, and an outer wall of the plugging block is slidably connected with the inner wall of the lower air inlet hole.

[0009] Further, the air bag assembly comprises a placing groove formed in the inner wall of the first half-arc-shaped ring, and an air bag is arranged in the placing groove and fixedly connected with the inner wall of the inflation pipe.

[0010] Further, the inner wall of the sealing cover is slidably connected with the outer wall of the inflation pipe, a connecting hole is formed in the inner wall of the first half-arc-shaped ring, and the inner walls of the first half-arc-shaped ring and the second half-arc-shaped ring are fixedly connected with two rubber rings.

[0011] Further, the fixing mechanism comprises a turnover assembly and a fixing assembly, the turnover assembly comprises two first fixing blocks fixedly connected to the outer walls of the first half-arc-shaped ring and the second half-arc-shaped ring, the inner walls of the two first fixing blocks are fixedly connected with two connecting rods, and the outer walls of the two connecting rods are slidably connected with two receiving blocks.

[0012] Further, the side, close to each other, of the receiving blocks is fixedly connected with a second spring, the outer walls of the receiving blocks are hingedly connected with two hinge rods, and the sides, close to each other, of the two hinge rods are hingedly connected.

[0013] Further, the fixing assembly comprises two second fixing blocks fixedly connected to the outer walls of the first half-arc-shaped ring and the second half-arc-shaped ring, a clamping groove is formed in the top surface of the lower second fixing block, a clamping block is slidably connected with the inner wall of the clamping groove, the top surface of the clamping block is fixedly connected with the bottom surface of the upper second fixing block, and a second spring groove is formed in the inner wall of the lower second fixing block.

[0014] Further, the inner wall of the second spring groove is slidably connected with a sliding block, the right side of the sliding block is fixedly connected with a third spring, the front end of the third spring is fixedly connected with the inner wall of the second spring groove, the inner wall of the sliding block is fixedly connected with a pull rod, and the outer wall of the pull rod is slidably connected with the inner wall of the clamping block.

[0015] The utility model has the following beneficial effects:

[0016] By setting the plugging mechanism, the elastic force of the first spring is utilized, the two air inlet holes are aligned with each other by rotating the sealing cover, the air bag is inflated to expand to plug the leakage hole of the pipeline, the plugging treatment is completed, the plugging state of the plugging block to the lower air inlet hole is changed by rotating the sealing cover, the total amount of gas in the air bag is selectively released or filled to change the expansion size of the air bag, the air bag is adapted to the leakage hole of the pipeline with different diameters, and the application range of the device is improved.

[0017] 2、By setting the fixing mechanism, the elastic force of the second spring and the third spring is utilized, the distance and the angle between the first half-arc-shaped ring and the second half-arc-shaped ring are turned and pulled, the first half-arc-shaped ring and the second half-arc-shaped ring are better sleeved on the pipeline, the pull rod is pulled to complete self-locking fixation of the first half-arc-shaped ring and the second half-arc-shaped ring, the plugging mechanism is stably fixed on the pipeline to complete the plugging effect, and the practicability of the device is further improved.

[0018] Of course, any product implementing the present application does not necessarily need to achieve all the advantages described above. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0021] Figure 2 It is a schematic diagram of the bottom view structure of the present application;

[0022] Figure 3 It is a schematic diagram of the front view cross-sectional structure of the present application;

[0023] Figure 4 It is Figure 3 It is an enlarged structure schematic diagram of the position A in the middle;

[0024] Figure 5 It is Figure 3 It is an enlarged structure schematic diagram of the position B in the middle.

[0025] In the drawings, the component list represented by each number is as follows:

[0026] First half arc ring;2, leaking stoppage mechanism;3, fixing mechanism;21, second half arc ring;22, inflation tube;23, first spring slot;24, first spring;25, limiting ring;26, sealing cover;27, air inlet hole;28, blocking block;29, placing slot;210, air bag;211, connecting hole;212, rubber ring;31, first fixing block;32, connecting rod;33, receiving block;34, second spring;35, hinged rod;36, second fixing block;37, clamping slot;38, clamping block;39, second spring slot;310, sliding block;311, third spring;312, pull rod. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0028] Please refer to Figures 1-5 The utility model discloses a leaking stoppage device for coal bed gas pipeline, including first half arc ring 1, first half arc ring 1 is provided with leaking stoppage mechanism 2 and fixing mechanism 3 on it;

[0029] Leaking stoppage mechanism 2 includes adjusting assembly, blocking assembly and air bag assembly, adjusting assembly includes the second half arc ring 21 of setting under first half arc ring 1, the outer wall of first half arc ring 1 is fixedly connected with inflation tube 22, the outer wall of inflation tube 22 is set with first spring slot 23, the inner wall of first spring slot 23 is fixedly connected with first spring 24, the bottom of first spring 24 is fixedly connected with limiting ring 25, the inner wall of limiting ring 25 is slidably connected with the outer wall of first spring slot 23, and the outer wall of limiting ring 25 is fixedly connected with sealing cover 26.

[0030] Among them as Figure 2 , Figure 3 and Figure 4 The blocking assembly includes two air inlet holes 27 set on the top surface of sealing cover 26 and inflation tube 22, the inner wall of sealing cover 26 is fixedly connected with blocking block 28, the outer wall of blocking block 28 is slidably connected with the inner wall of the lower air inlet hole 27, the air bag assembly includes a placing slot 29 set on the inner wall of first half arc ring 1, the inner wall of placing slot 29 is provided with air bag 210, the outer wall of air bag 210 is fixedly connected with the inner wall of inflation tube 22, the inner wall of sealing cover 26 is slidably connected with the outer wall of inflation tube 22, the inner wall of first half arc ring 1 is set with connecting hole 211, and the inner walls of first half arc ring 1 and second half arc ring 21 are fixedly connected with two rubber rings 212.

[0031] By setting the plugging mechanism 2, the elastic force of the first spring 24 is utilized, the two air inlet holes 27 are aligned by rotating the sealing cover 26, the air bag 210 is inflated to expand and plug the leakage hole of the pipeline, the plugging treatment is completed, the rotation of the sealing cover 26 changes the plugging state of the plugging block 28 to the lower air inlet hole 27, and the total amount of gas in the air bag 210 is selectively released or filled to change the expansion size of the air bag 210, which is used to adapt to pipeline leakage holes of different diameters, and the application range of the device is improved.

[0032] As shown in Figure 2 , Figure 3 and Figure 5 , the fixing mechanism 3 includes a turnover assembly and a fixing assembly, the turnover assembly includes two first fixed blocks 31 fixedly connected to the outer walls of the first semicircular ring 1 and the second semicircular ring 21, the inner walls of the two first fixed blocks 31 are fixedly connected with connecting rods 32, the outer walls of the two connecting rods 32 are slidingly connected with two receiving blocks 33, the sides close to each other of the receiving blocks 33 are fixedly connected with second springs 34, the outer walls of the receiving blocks 33 are hingedly connected with two hinge rods 35, the sides close to each other of the two hinge rods 35 are hingedly connected, the fixing assembly includes two second fixed blocks 36 fixedly connected to the outer walls of the first semicircular ring 1 and the second semicircular ring 21, the top surface of the lower second fixed block 36 is provided with a clamping groove 37, the inner wall of the clamping groove 37 is slidingly connected with a clamping block 38, the top surface of the clamping block 38 is fixedly connected with the bottom surface of the upper second fixed block 36, the inner wall of the lower second fixed block 36 is provided with a second spring groove 39, the inner wall of the second spring groove 39 is slidingly connected with a sliding block 310, the right side of the sliding block 310 is fixedly connected with a third spring 311, the front end of the third spring 311 is fixedly connected with the inner wall of the second spring groove 39, the inner wall of the sliding block 310 is fixedly connected with a pull rod 312, and the outer wall of the pull rod 312 is slidingly connected with the inner wall of the clamping block 38.

[0033] By setting the fixing mechanism 3, the elastic force of the second spring 34 and the third spring 311 is utilized, the distance and angle between the first semicircular ring 1 and the second semicircular ring 21 can be turned and pulled, which is convenient for better sleeving the first semicircular ring 1 and the second semicircular ring 21 on the pipeline and pulling the pull rod 312 to complete the self-locking fixation of the first semicircular ring 1 and the second semicircular ring 21, ensuring that the plugging mechanism 2 is stably fixed on the pipeline to complete the plugging effect, and further improving the practicability of the device.

[0034] One specific application of the embodiment is: by setting the plugging mechanism 2, the staff first pulls the air bag 210 out of the placing groove 29 through the connecting hole 211, and then the staff can use the fixing mechanism 3 to drive the first half-arc ring 1 and the second half-arc ring 21 to fasten the pipeline sleeve, and the exposed air bag 210 is close to the pipeline leakage hole. At this time, the sealing cover 26 drives the limiting ring 25 to slide upward in the first spring groove 23, so that the limiting ring 25 extrudes the first spring 24, and at this time the first spring 24 is in a compressed state. The sealing cover 26 drives the plugging block 28 to separate from the lower air inlet hole 27, then rotates the sealing cover 26, drives the upper air inlet hole 27 to be aligned with the lower air inlet hole 27, at this time the sealing cover 26 rotates through the limiting ring 25 to drive the first spring 24 to elastically deform, after the two air inlet holes 27 are aligned, the staff fills the air in the inflation tube 22 through the two air inlet holes 27, the gas flows into the air bag 210 through the inflation tube 22, so that the air bag 210 between the first half-arc ring 1 and the second half-arc ring 21 is filled and inflated by the gas. The air bag 210 expands, drives its outer wall to contact the pipeline leakage hole, and carries out plugging treatment. After the air bag 210 is completely plugged to stop inflating, the sealing cover 26 is quickly loosened, so that the sealing cover 26 is downwardly slid on the outer wall of the inflation tube 22 under the elastic reset of the first spring 24, the two air inlet holes 27 are misaligned with each other, and the sealing cover 26 is driven to slide downward, so that the plugging block 28 blocks the lower air inlet hole 27, and the air bag 210 is sealed. A plurality of rubber rings 212 are arranged on the first half-arc ring 1 and the second half-arc ring 21, which seal the contact with the pipeline and limit the expansion of the air bag 210, realize the elastic force of the first spring 24, the staff can align the two air inlet holes 27 by rotating the sealing cover 26, inflate the air bag 210 to block the pipeline leakage hole, and complete the plugging treatment. Rotating the sealing cover 26 changes the plugging state of the plugging block 28 to the lower air inlet hole 27, selectively releases or fills the total amount of gas in the air bag 210, changes the expansion size of the air bag 210, and is suitable for pipeline leakage holes of different diameters, thereby improving the application range of the device.

[0035] When the workers need to put the first half-arc ring 1 and the second half-arc ring 21 on the pipeline, the first half-arc ring 1 is turned over, so that the first half-arc ring 1 drives the two lower supporting blocks 33 on the lower connecting rod 32 to rotate through the articulated rod 35, then the first half-arc ring 1 is adjusted, and the first half-arc ring 1 and the second half-arc ring 21 are pulled outward, so that the two connecting rods 32 are away from each other, the articulated rod 35 is turned over through the supporting block 33, the articulated rod 35 drives the several supporting blocks 33 to be close to each other and compress the two second springs 34, after the first half-arc ring 1 and the second half-arc ring 21 are completely opened, the first half-arc ring 1 and the second half-arc ring 21 are put on the pipeline, and the pulling force is reduced, so that the two second springs 34 are elastically reset, the supporting blocks 33 are pushed away from each other, the first half-arc ring 1 and the second half-arc ring 21 are close to each other, at this time, the pull rod 312 drives the sliding block 310 to slide in the second spring groove 39, and the third spring 311 is compressed, the left end of the pull rod 312 is separated from the clamping groove 37, the first half-arc ring 1 and the second half-arc ring 21 are close to each other and drive the clamping block 38 on the upper second fixing block 36 to slide into the clamping groove 37, the pull rod 312 is loosened, and the left end of the pull rod 312 slides into the inner wall of the clamping block 38 under the elastic reset of the third spring 311, the limiting and fixing of the clamping block 38 are completed, the elastic forces of the second spring 34 and the third spring 311 are utilized to turn over and pull the distance and the angle between the first half-arc ring 1 and the second half-arc ring 21, so that the first half-arc ring 1 and the second half-arc ring 21 are better put on the pipeline, the pull rod 312 is pulled to complete the self-locking and fixing of the first half-arc ring 1 and the second half-arc ring 21, the leak stoppage mechanism 2 is stably fixed on the pipeline to complete the leak stoppage function, and the practicability of the device is further improved.

[0036] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0037] The preferred embodiments disclosed above are only used to help describe the utility model. The preferred embodiments do not describe all the details and do not limit the utility model to the specific embodiments. Obviously, according to the content of the specification, many modifications and changes can be made. The specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that the persons skilled in the art can well understand and utilize the utility model. The utility model is limited by the claims and the entire scope and equivalents thereof.

Claims

1. A plugging device for coal bed methane pipeline, comprising a first semi-arc ring (1), a plugging mechanism (2) and a fixing mechanism (3) are arranged on the first semi-arc ring (1), characterized in that: the plugging mechanism (2) comprises an adjusting assembly, a plugging assembly and a gas bag assembly, the adjusting assembly comprises a second semi-arc ring (21) arranged below the first semi-arc ring (1), an inflation tube (22) is fixedly connected to the outer wall of the first semi-arc ring (1), a first spring groove (23) is formed in the outer wall of the inflation tube (22), a first spring (24) is fixedly connected to the inner wall of the first spring groove (23), a limiting ring (25) is fixedly connected to the bottom end of the first spring (24), the inner wall of the limiting ring (25) is in sliding connection with the outer wall of the first spring groove (23), and a sealing cover (26) is fixedly connected to the outer wall of the limiting ring (25).

2. A plugging device for coal bed methane pipelines according to claim 1, characterized in that, the plugging assembly comprises two air inlet holes (27) formed in the top surfaces of the sealing cover (26) and the inflation tube (22), a plugging block (28) is fixedly connected to the inner wall of the sealing cover (26), and the outer wall of the plugging block (28) is in sliding connection with the inner wall of the lower air inlet hole (27).

3. A plugging device for coal bed methane pipelines according to claim 2, characterized in that, the gas bag assembly comprises a placing groove (29) formed in the inner wall of the first semi-arc ring (1), and a gas bag (210) is arranged in the inner wall of the placing groove (29) and fixedly connected to the inner wall of the inflation tube (22).

4. A plugging device for coal bed methane pipelines according to claim 3, characterized in that, the inner wall of the sealing cover (26) is in sliding connection with the outer wall of the inflation tube (22), a connecting hole (211) is formed in the inner wall of the first semi-arc ring (1), and the inner walls of the first semi-arc ring (1) and the second semi-arc ring (21) are fixedly connected with two rubber rings (212).

5. A plugging device for coal seam gas pipelines according to claim 4, characterised in that, the fixing mechanism (3) comprises a turnover assembly and a fixing assembly, the turnover assembly comprises two first fixing blocks (31) fixedly connected to the outer walls of the first semi-arc ring (1) and the second semi-arc ring (21), the inner walls of the two first fixing blocks (31) are fixedly connected with connecting rods (32), and the outer walls of the two connecting rods (32) are slidingly connected with two receiving blocks (33).

6. A plugging device for coal seam gas pipelines according to claim 5, characterised in that, the side of each of the receiving blocks (33) close to each other is fixedly connected with a second spring (34), the outer walls of the receiving blocks (33) are hingedly connected with two hinge rods (35), and the sides of the two hinge rods (35) close to each other are hingedly connected.

7. A plugging device for coal seam gas pipelines according to claim 6, characterised in that, the fixing assembly comprises two second fixing blocks (36) fixedly connected to the outer walls of the first semi-arc ring (1) and the second semi-arc ring (21), a clamping groove (37) is formed in the top surface of the lower second fixing block (36), a clamping block (38) is slidingly connected to the inner wall of the clamping groove (37), the top surface of the clamping block (38) is fixedly connected to the bottom surface of the upper second fixing block (36), and a second spring groove (39) is formed in the inner wall of the lower second fixing block (36).

8. A plugging device for coal seam gas pipelines according to claim 7, characterized in that, The inner wall of the second spring groove (39) is slidably connected with a sliding block (310), the right side of the sliding block (310) is fixedly connected with a third spring (311), the front end of the third spring (311) is fixedly connected with the inner wall of the second spring groove (39), the inner wall of the sliding block (310) is fixedly connected with a pull rod (312), and the outer wall of the pull rod (312) is slidably connected with the inner wall of the clamping block (38).

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