Novel coal bed gas collecting device

Abstract

The utility model relates to the technical field of coal bed gas layer collecting equipment, in particular to a novel coal bed gas collecting device. The novel coal bed gas collecting device comprises a collecting tank, an exhaust pipe is installed on the collecting tank, a butt joint pipe is fixedly installed at the other end of the exhaust pipe, and a connecting flange is fixedly installed on the butt joint pipe; the novel coal bed gas collecting device further comprises a blocking assembly used for blocking the exhaust cavity. According to the novel coal bed gas collecting device, the sliding through hole of the abutting column and the middle connecting rod are coaxially arranged by rotating the rotary knob, at the moment, the abutting column does not abut against or limit the middle connecting rod, and therefore the middle connecting rod slides upwards along the sliding through hole under the action of the elastic force of the spring till the sealing disc seals an exhaust cavity formed in the adjacent sealing disc; therefore, leakage at the connecting flange and the coal seam exhaust pipe flange can be quickly stopped, and an effective safe environment is provided for maintenance of workers.

Description

Technical Field

[0001] The utility model relates to the technical field of coal bed gas collection equipment, in particular to a novel coal bed gas collection device. Background Art

[0002] Coalbed methane is a gas resource that coexists with coal. It refers to hydrocarbon gas stored in coal seams, with methane as the main component. It is an unconventional natural gas. Coalbed methane has good flammability, so during the production and collection process, special attention should be paid to avoiding open flames, otherwise explosion accidents will occur.

[0003] At present, when operators collect coalbed methane, they often use corresponding collection devices to achieve better storage effects. However, in actual use, the existing collection devices are prone to coalbed methane leakage due to sealing problems at the connection between the collection devices and the coalbed exhaust pipelines. It is difficult to seal them quickly, which can easily lead to safety accidents.

[0004] Therefore, it is necessary to provide a new type of coalbed methane collection device to solve the above technical problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a novel coal bed methane collecting device.

[0006] The novel coalbed methane collection device provided by the utility model comprises a collection tank, an exhaust pipe is installed on the collection tank, a butt pipe is fixedly installed on the other end of the exhaust pipe, and a connecting flange for connecting the flange of the coalbed exhaust pipe is fixedly installed on the butt pipe, a plurality of plug-in arc plates distributed in an annular manner and used for plugging into the coalbed exhaust pipe are fixedly installed at the bottom of the connecting flange, and a temporary sealing plate is fixedly mounted between the plug-in arc plates, and an exhaust cavity is opened on the temporary sealing plate;

[0007] The novel coalbed methane collection device also includes a plugging assembly for plugging the exhaust cavity, and the plugging assembly includes a middle link rod, the bottom of the middle link rod extends out of the exhaust cavity and is fixedly installed with a sealing disk, and a spring is sleeved on the middle link rod, a rotatably connected and radially arranged abutting column is installed in the butt-jointed tube, and a radially arranged sliding through hole is opened on the abutting column, and the top of the middle link rod abuts against the rod surface of the abutting column without a sliding through hole;

[0008] The butt-joint pipe is also provided with a gas leak detector for detecting gas leakage at the connection between the butt-joint pipe and the coal seam exhaust pipe.

[0009] Preferably, a mounting ring is fixedly mounted on the inserted arc plate, one end of the spring is fixedly connected to the upper disk surface of the sealing disk, and the other end of the spring extends out of the exhaust cavity and is fixedly connected to the lower ring surface of the mounting ring.

[0010] Preferably, both side walls of the middle link are provided with limiting sliding grooves, and two limiting blocks are fixedly mounted on the inner ring surface of the mounting ring, and the two limiting blocks are respectively inserted into the limiting sliding grooves and slidably connected with the limiting sliding grooves.

[0011] Preferably, an arc groove matching the arc surface of the outer column wall of the abutment column is formed on the top of the middle link rod, and the axis of the sliding through hole is parallel and / or perpendicular to the axis of the middle link rod.

[0012] Preferably, the blocking assembly further comprises a knob, the connecting end of which is inserted into the docking tube and fixedly connected to the connecting end of the abutment column.

[0013] Preferably, a fixing ring is fixedly mounted on the butt joint, and a plurality of brackets distributed in an annular manner are fixedly mounted on the fixing ring, and a gas leak detector is fixedly mounted on each of the brackets.

[0014] Preferably, an air pump is installed on the collection tank, the output end of the air pump is connected to the air inlet of the collection tank, and the input end of the air pump is fixedly connected to the other end of the air extraction pipe.

[0015] Compared with the related art, the new coalbed methane collection device provided by the utility model has the following beneficial effects:

[0016] The utility model discloses that when the gas leak detector detects gas leakage at the connection between the connecting flange and the flange of the coal seam exhaust pipe, the staff can make the sliding through hole of the abutment column coaxial with the middle link rod by turning the knob. At this time, the abutment column no longer abuts and restricts the middle link rod, so that the middle link rod slides up along the sliding through hole under the action of the spring force until the sealing disk seals the exhaust cavity opened by the temporary sealing disk. Therefore, the leakage between the connecting flange and the flange of the coal seam exhaust pipe can be quickly stopped, providing an effective and safe environment for the staff to carry out maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A structural schematic diagram of a preferred embodiment of a novel coal bed gas collection device provided by the utility model;

[0018] Figure 2 for Figure 1 A schematic cross-sectional view of the butt-joint pipe is shown;

[0019] Figure 3 for Figure 2 The structural schematic diagram of the butt-joint pipe is shown;

[0020] Figure 4 for Figure 2 A schematic structural diagram of the plugging assembly shown;

[0021] Figure 5 for Figure 1 Schematic diagram of the structure of the gas leak detector shown.

[0022] Numbers in the figure: 1. collecting tank; 11. vacuum pump; 2. vacuum pipe; 3. butt joint; 31. connecting flange; 32. inserted arc plate; 33. temporary sealing disk; 33a. exhaust chamber; 4. sealing assembly; 41. center link rod; 41a. limiting slide groove; 42. sealing disk; 43. mounting ring; 431. limiting block; 44. spring; 45. abutment column; 45a. sliding through hole; 46. knob; 5. gas leak detector; 51. fixing ring; 52. bracket. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0024] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0025] See also Figures 1 to 5 The utility model embodiment provides a novel coalbed methane collection device, which includes a collection tank 1, a butt joint pipe 3 and a plugging component 4.

[0026] In the embodiments of the present invention, please refer to Figures 1 to 5 A vacuum pipe 2 is installed on the collecting tank 1, specifically, a vacuum pump 11 is installed on the collecting tank 1, the output end of the vacuum pump 11 is connected to the air inlet of the collecting tank 1, and the input end of the vacuum pump 11 is fixedly connected to the other end of the vacuum pipe 2, and a docking pipe 3 is fixedly installed on the other end of the vacuum pipe 2, and a connecting flange 31 for connecting the flange of the coal seam exhaust pipe is fixedly installed on the docking pipe 3, and a plurality of annularly distributed insertion arc plates 32 for being inserted into the coal seam exhaust pipe are fixedly installed at the bottom of the connecting flange 31, and a temporary sealing plate 33 is fixedly mounted between the insertion arc plates 32, and an exhaust cavity 33a is opened on the temporary sealing plate 33.

[0027] It should be noted that: during installation, the arc plate 32 and the temporary sealing plate 33 at the bottom of the connecting flange 31 are inserted into the coal seam exhaust pipe until the connecting flange 31 and the flange of the connecting coal seam exhaust pipe correspond to each other and then fixedly connected with screws, thereby completing the connection between the collecting tank 1 and the connecting coal seam exhaust pipe;

[0028] In this embodiment, in order to improve the tightness of the connection between the temporary sealing plate 33 and the coal seam exhaust pipe, a sealing rubber ring is embedded in the outer disk surface of the temporary sealing plate 33, so that the temporary sealing plate 33 is tightly pressed against the inner ring wall of the coal seam exhaust pipe;

[0029] It is worth noting that in the present application, a filtering device for coalbed methane purification can be added at the connection between the exhaust pipe 2 and the exhaust pump 11 (such as adding a filter screen or other filter at the pipe mouth), so as to improve the cleanliness of the coalbed methane in the collection tank 1.

[0030] In the embodiments of the present invention, please refer to Figures 1 to 5 A gas leak detector 5 for detecting gas leakage at the connection between the butt joint pipe 3 and the coal seam exhaust pipe is also installed on the butt joint pipe 3. Specifically, a fixing ring 51 is fixedly installed on the butt joint pipe 3, and a plurality of annularly distributed brackets 52 are fixedly installed on the fixing ring 51, and a gas leak detector 5 is fixedly installed on each bracket 52. Arranging a plurality of gas leak detectors 5 can improve the comprehensiveness of gas leakage detection at the connection between the connecting flange 31 and the coal seam exhaust pipe flange;

[0031] The novel coalbed methane collection device also includes a sealing component 4 for sealing the exhaust chamber 33a, and the sealing component 4 includes a central link rod 41, the bottom of the central link rod 41 extends out of the exhaust chamber 33a and is fixedly installed with a sealing disk 42, a rotatably connected and radially arranged abutment column 45 is installed in the butt-jointed tube 3, and the abutment column 45 is provided with a radially arranged sliding through hole 45a, the top of the central link rod 41 abuts against the rod surface of the abutment column 45 without the sliding through hole 45a, a mounting ring 43 is fixedly installed on the inserted arc plate 32, and a spring 44 is sleeved on the central link rod 41, specifically, one end of the spring 44 is fixedly connected to the upper disk surface of the sealing disk 42, and the other end of the spring 44 extends out of the exhaust chamber 33a and is fixedly connected to the lower ring surface of the mounting ring 43, and the spring 44 is in a compressed state, and the sealing component 4 also includes a knob 46, the connecting end of the knob 46 is inserted into the butt-jointed tube 3 and is fixedly connected to the connecting end of the abutment column 45.

[0032] It should be noted that: when the gas leak detector 5 detects gas leakage at the connection between the connecting flange 31 and the coal seam exhaust pipe flange, the staff can turn the knob 46 to make the sliding hole 45a of the abutment column 45 coaxial with the middle link 41. At this time, the abutment column 45 no longer abuts and restricts the middle link 41, so under the action of the elastic force of the spring 44, the middle link 41 slides up along the sliding hole 45a until the sealing disk 42 seals the exhaust chamber 33a opened by the temporary sealing disk 33. Therefore, the leakage between the connecting flange 31 and the coal seam exhaust pipe flange can be quickly stopped, providing an effective and safe environment for staff maintenance.

[0033] Furthermore, the axis of the sliding hole 45a is arranged parallel to and / or perpendicular to the axis of the middle link 41, so that the middle link 41 and the cylindrical surface of the sliding hole 45a provided in the abutment column 45 remain corresponding, and the top of the middle link 41 is provided with an arc groove that matches the arc surface of the outer column wall of the abutment column 45. Therefore, when the sliding hole 45a provided in the middle link 41 and the abutment column 45 are misaligned, the middle link 41 can fit well with the outer column wall of the abutment column 45 under the elastic force of the spring 44, and when the abutment column 45 is rotated to make the sliding hole 45a and the middle link 41 coaxially arranged, the arc groove provided in the middle link 41 can make the middle link 41 more stable when the abutment column 45 rotates.

[0034] Furthermore, both side walls of the middle link 41 are provided with limiting grooves 41a, and two limiting blocks 431 are fixedly installed on the inner ring surface of the mounting ring 43. The two limiting blocks 431 are respectively inserted into the limiting grooves 41a and slidably connected to the limiting grooves 41a, so as to avoid swinging of the middle link 41 when sliding up and down, thereby improving the stability of the middle link 41 when sliding up and down.

[0035] Among them, in this application, the gas leak detector 5 adopts the KP816 gas leak detector.

[0036] The working principle of the new coal bed gas collection device provided by the utility model is as follows:

[0037] During installation, the arc plate 32 and the temporary sealing plate 33 at the bottom of the connecting flange 31 are inserted into the coal seam exhaust pipe until the connecting flange 31 and the flange of the connecting coal seam exhaust pipe correspond to each other and then fixedly connected with screws to complete the connection between the collecting tank 1 and the connecting coal seam exhaust pipe. When the gas leak detector 5 detects gas leakage at the connection between the connecting flange 31 and the flange of the coal seam exhaust pipe, the staff can turn the knob 46 to make the sliding through hole 45a of the abutment column 45 coaxial with the middle link rod 41. At this time, the abutment column 45 no longer abuts and restricts the middle link rod 41, so that the middle link rod 41 slides up along the sliding through hole 45a under the action of the elastic force of the spring 44 until the sealing plate 42 seals the exhaust cavity 33a opened by the temporary sealing plate 33. Therefore, the leakage at the connecting flange 31 and the flange of the coal seam exhaust pipe can be quickly stopped, providing an effective and safe environment for staff maintenance.

[0038] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0039] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A novel coal bed gas collection device, comprising a collection tank (1), wherein a gas extraction pipe (2) is installed on the collection tank (1), characterized in that: A butt joint pipe (3) is fixedly mounted on the other end of the exhaust pipe (2), and a connecting flange (31) for connecting to a flange of a coal seam exhaust pipe is fixedly mounted on the butt joint pipe (3), a plurality of insertion arc plates (32) distributed in an annular pattern and used for being inserted into the coal seam exhaust pipe are fixedly mounted on the bottom of the connecting flange (31), and a temporary sealing plate (33) is fixedly mounted between the insertion arc plates (32), and an exhaust cavity (33a) is provided on the temporary sealing plate (33); The novel coalbed methane collection device further comprises a plugging assembly (4) for plugging the exhaust cavity (33a), and the plugging assembly (4) comprises a middle link rod (41), the bottom of the middle link rod (41) extends out of the exhaust cavity (33a) and is fixedly mounted with a sealing disk (42), and a spring (44) in a compressed state is sleeved on the middle link rod (41), a rotatably connected and radially arranged abutting column (45) is installed in the butt-jointing tube (3), and a radially arranged sliding through hole (45a) is provided on the abutting column (45), and the top of the middle link rod (41) abuts against the rod surface of the abutting column (45) which does not have the sliding through hole (45a); The butt-joint pipe (3) is also provided with a gas leak detector (5) for detecting gas leakage at the connection between the butt-joint pipe (3) and the coal seam exhaust pipe.

2. The novel coal bed gas collection device according to claim 1 is characterized in that: A mounting ring (43) is fixedly mounted on the inserted arc plate (32), one end of the spring (44) is fixedly connected to the upper disk surface of the sealing disk (42), and the other end of the spring (44) extends out of the exhaust cavity (33a) and is fixedly connected to the lower ring surface of the mounting ring (43).

3. The novel coal bed gas collection device according to claim 2 is characterized in that: Both side walls of the middle link rod (41) are provided with limit sliding grooves (41a), and the inner ring surface of the mounting ring (43) is fixedly mounted with two limit blocks (431), and the two limit blocks (431) are respectively inserted into the limit sliding grooves (41a) and slidably connected to the limit sliding grooves (41a).

4. The novel coal bed gas collection device according to claim 1 is characterized in that: The top of the middle link rod (41) is provided with an arc groove that matches the arc surface of the outer column wall of the abutment column (45), and the axis of the sliding through hole (45a) is parallel to and / or perpendicular to the axis of the middle link rod (41).

5. The novel coal bed gas collection device according to claim 1 is characterized in that: The blocking assembly (4) further comprises a knob (46), the connection end of the knob (46) being inserted into the butt joint tube (3) and fixedly connected to the connection end of the abutment column (45).

6. The novel coal bed gas collection device according to claim 1 is characterized in that: A fixing ring (51) is fixedly mounted on the butt joint pipe (3), and a plurality of brackets (52) distributed in an annular manner are fixedly mounted on the fixing ring (51), and a gas leak detector (5) is fixedly mounted on each of the brackets (52).

7. The novel coal bed gas collection device according to claim 1 is characterized in that: An air pump (11) is installed on the collection tank (1), the output end of the air pump (11) is connected to the air inlet of the collection tank (1), and the input end of the air pump (11) is fixedly connected to the other end of the air extraction pipe (2).

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