Blind plate operation device for gas operation

Abstract

The utility model relates to the technical field of blind plate operation, and discloses a gas operation blind plate operation device which comprises multiple sections of gas guide pipes, the gas guide pipes are connected through flanges, manual butterfly valves are installed at the two ends of each gas guide pipe, an expansion joint is installed between the gas guide pipes, and a blind plate operation assembly is installed between the gas guide pipes. A pair of diffusing assemblies is mounted on the gas guide pipe; the diffusing assembly exhausts gas in the gas guide pipe; the blind plate operation assembly comprises a flange connecting pipe, flange connecting discs are fixed to the end, away from the gas guide pipe, of the flange connecting pipe, the flange connecting discs are connected through three bolts, telescopic rods are installed on the flange connecting discs, and the telescopic rods are used for adjusting the distance between the flange connecting discs. A sealing plate piece is mounted on the bolt at one end far away from the telescopic rod; the plate sealing piece comprises a solid plate, a hollow plate and a connecting plate, and the solid plate and the hollow plate are connected together through the connecting plate. And a connecting hole is formed in the middle of the connecting plate. According to the method, the convenience of blind plate operation can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of blind plate operation, and in particular to a blind plate operating device for coal gas operations. Background Art

[0002] Coal gas is a commonly used fuel in our daily life and industrial production. During the transportation process, coal gas needs to be transported through pipelines. Gas pipelines need to undergo daily inspections and maintenance. During the maintenance of pipelines, the end of the pipeline close to the gas source needs to be disconnected and the internal gas needs to be emptied before the operation can be performed. The traditional sealing plate operation requires that most of the multiple screws installed on the flange be removed before the sealing plate can be operated, which is more troublesome. Summary of the invention

[0003] In order to overcome the defects of the " " technology, the technical problem to be solved by the present invention is to propose a gas operation blind plate operating device to solve the above problems.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] A blind plate operating device for coal gas operations provided by the present invention comprises a plurality of gas guide pipes, the gas guide pipes are flange-connected, manual butterfly valves are installed at both ends of the gas guide pipes, expansion joints are installed between the gas guide pipes, a blind plate operating assembly is installed between the gas guide pipes, and a pair of release assemblies are installed on the gas guide pipes; the release assembly discharges the gas inside the gas guide pipe; the blind plate operating assembly comprises a flange connecting pipe, a flange connecting plate is fixed to the end of the flange connecting pipe away from the gas guide pipe, the flange connecting plate is connected by three bolts, a telescopic rod is installed on the flange connecting plate, and the telescopic rod is used to adjust the distance between the flange connecting plates; a sealing plate is installed on the bolt away from one end of the telescopic rod; the sealing plate comprises a solid plate, a hollow plate and a connecting plate, the connecting plate connects the solid plate and the hollow plate together; a connecting hole is provided in the middle of the connecting plate; the sealing plate rotates freely with the bolt as the central axis.

[0006] Optionally, the distances between the bolts are equal; the distance from the connecting hole to the edge of the solid plate away from the connecting hole is smaller than the distance between the bolts; the distance from the connecting hole to the side of the hollow plate away from the connecting hole is smaller than the distance between the bolts.

[0007] Optionally, a flange positioning hole is provided on the flange connecting plate, and a pair of connecting positioning holes are provided on the connecting plate, and the connecting positioning holes are symmetrically arranged on both sides of the connecting holes; a pin shaft is detachably installed on the flange connecting plate; the pin shaft passes through the flange positioning hole and the connecting positioning hole.

[0008] Optionally, the relief assembly includes a relief pipe, a relief valve is installed on the relief pipe, a sampling pipe is installed on the side of the relief pipe, and a sampling valve is installed on the sampling pipe.

[0009] Optionally, the bolt includes a nut, a sliding rod is fixed to the nut, and a threaded rod is fixed to one end of the sliding rod away from the nut; a threaded cylinder connected to the threaded rod is fixedly mounted on the flange connecting plate; and the connecting plate is mounted on the sliding rod.

[0010] Optionally, sealing rings are fixed on both sides of the hollow plate, and sealing protrusions are fixed on both sides of the solid plate.

[0011] Optionally, the expansion joint is connected to the air duct flange.

[0012] The beneficial effects of the invention are:

[0013] A gas operation blind plate operating device, the flange connection plate in the blind plate operating assembly is connected by three bolts, the angle between each bolt is 120 degrees, in the process of blind plate operation, the three bolts are loosened first and then the two flange connection plates are controlled by the telescopic rod, so that the blind plate can be operated, the sealing plate part rotates freely with the bolt as the central axis, and the position of the solid plate and the hollow plate can be freely exchanged, so that the blind plate sealing operation is more convenient and quick;

[0014] A connection hole and a bolt bed connection hole are provided in the middle of the connection plate of the sealing plate in the blind plate operation assembly, so that the sealing plate can be centered on the bolt and the position of the solid plate and the hollow plate can be changed by rotation, making the sealing plate operation more convenient and quick;

[0015] There is no need to remove the bolts during the operation of the blind plate, thereby improving the efficiency of the blind plate operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of a specific embodiment of the present application;

[0017] Figure 2 This is a schematic diagram of the structure of a blind plate operating assembly according to a specific embodiment of the present application;

[0018] Figure 3 This is a schematic diagram of the sealing plate structure of a specific embodiment of the present application;

[0019] Figure 4 It is a schematic diagram of the structure of the release component of a specific embodiment of the present application;

[0020] Figure 5 It is a schematic diagram of the bolt structure of a specific embodiment of the present application.

[0021] Reference numerals in the figures:

[0022] 1. Air guide pipe; 2. Manual butterfly valve; 3. Expansion joint; 4. Blind plate operating assembly; 41. Flange connecting pipe; 42. Flange connecting plate; 421. Flange positioning hole; 422. Threaded barrel; 43. Telescopic rod; 44. Closing plate; 45. Solid plate; 451. Sealing protrusion; 46. Hollow plate; 461. Sealing ring; 47. Connecting plate; 471. Connecting positioning hole; 472. Pin shaft; 48. Connecting hole; 49. Bolt; 491. Nut; 492. Sliding rod; 493. Threaded rod; 5. Release assembly; 51. Release pipe; 52. Release valve; 53. Sampling tube; 54. Sampling valve. DETAILED DESCRIPTION

[0023] The following is combined with Figure 1-Figure 5 The technical solution of the utility model is further illustrated by specific implementation methods.

[0024] like Figure 1 , Figure 2 , as shown, a gas operation blind plate operating device provided in this embodiment includes a plurality of gas guide pipes 1, the gas guide pipes 1 are flange-connected, manual butterfly valves 2 are installed at both ends of the gas guide pipes 1, expansion joints 3 are installed between the gas guide pipes 1, blind plate operating components 4 are installed between the gas guide pipes 1, and a pair of venting components 5 are installed on the gas guide pipes 1; the venting components 5 discharge the gas inside the gas guide pipe 1; the blind plate operating component 4 includes a flange connecting pipe 41, and a flange connecting plate 4 is fixed at one end of the flange connecting pipe 41 away from the gas guide pipe 1 2. The flange connection plate 42 is connected by three bolts 49. A telescopic rod 43 is installed on the flange connection plate 42. The telescopic rod 43 is used to adjust the distance between the flange connection plates 42. A closing plate 44 is installed on the bolt 49 at one end away from the telescopic rod 43. The closing plate 44 includes a solid plate 45, a hollow plate 46 and a connecting plate 47. The connecting plate 47 connects the solid plate 45 and the hollow plate 46 together. A connecting hole 48 is opened in the middle of the connecting plate 47. The closing plate 44 rotates freely with the bolt 49 as the center axis.

[0025] When performing blind plate operation, first check the surrounding environment to ensure that there is no fire source, then close the manual butterfly valves 2 at both ends of the air duct 1 to disconnect the blind plate operating section from the gas, and release the air pressure in the air duct 1 of the blind plate operating section through the venting component 5. After the pressure is released, loosen all three bolts 49, and separate the two flange connection plates 42 from each other by controlling the extension of the telescopic rod 43 (hydraulic lever). At this time, the sealing plate member 44 rotates around the bolt 49 on the upper side of the flange connection plate 42. At this time, the solid plate 45 of the sealing plate member 44 is matched with the air duct 1, and then the two flange connection plates 42 are pulled together by controlling the contraction of the telescopic rod 43, and then the three bolts 49 are locked. At this time, the sealing operation is completed; when the inspection is completed, the positions of the solid plate and the hollow plate are exchanged according to the above steps, and finally the manual butterfly valve 2 is opened to conduct the gas pipeline again; thereby making the blind plate sealing operation more convenient and quick.

[0026] Reference Figure 2 , the distances between the bolts 49 are equal; the distance from the connecting hole 48 to the edge of the solid plate 45 away from the connecting hole 48 is smaller than the distance between the bolts 49 and the bolts 49; the distance from the connecting hole 48 to the side of the hollow plate 46 away from the connecting hole 48 is smaller than the distance between the bolts 49 and the bolts 49, and the closing plate 44 rotates with the bolt 49 at the top as the center point, and is not connected to the other two bolts 49, so that it can rotate freely, thereby facilitating the position replacement of the solid plate 45 and the hollow plate 46, thereby making the blind plate operation more convenient.

[0027] Reference Figure 2 , Figure 3 The flange connection plate 42 is provided with a flange positioning hole 421, and the connection plate 47 is provided with a pair of connection positioning holes 471, which are symmetrically arranged on both sides of the connection hole 48; a pin shaft 472 is detachably mounted on the flange connection plate 42; the pin shaft 472 passes through the flange positioning hole 421 and the connection positioning hole 471;

[0028] During the blind plate operation, when the bolt 49 has not been tightened, the pin shaft 472 is inserted into the flange positioning hole 421 and the connecting positioning hole 471, and the closing plate component 44 no longer rotates, thereby facilitating the tightening of the bolt 49 and effectively preventing the closing plate component 44 from shifting.

[0029] Reference Figure 4 The venting assembly 5 includes a venting pipe 51, a venting valve 52 is installed on the venting pipe 51, a sampling pipe 53 is installed on the side of the venting pipe 51, and a sampling valve 54 is installed on the sampling pipe 53. The venting valve 52 on the venting pipe 51 is opened to release the pressure. After the pressure is released, the gas between the manual butterfly valves 2 is discharged through the venting valve 52, and the sampling valve 54 on the sampling pipe 53 is opened to sample the gas. When the gas concentration is at a safe value, a blind plate operation is performed to ensure operation safety.

[0030] Reference Figure 5 The bolt 49 includes a nut 491, a sliding rod 492 is fixed to the nut 491, and a threaded rod 493 is fixed to the end of the sliding rod 492 away from the nut 491; a threaded cylinder 422 connected to the threaded rod 493 is fixedly mounted on the flange connecting plate 42; the connecting plate 47 is mounted on the sliding rod 492; at this time, the connecting plate 47 is easy to rotate.

[0031] Reference Figure 2 , Figure 3 Sealing rings 461 are fixed on both sides of the hollow plate 46. When the bolts 49 are tightened, the sealing rings 461 are clamped in the air duct 1 to enhance the sealing effect; sealing protrusions 451 are fixed on both sides of the solid plate 45. The sealing protrusions 451 are clamped in the air duct 1 to enhance the sealing effect.

[0032] Reference Figure 1 The expansion joint 3 is connected to the flange of the air duct 1. The distance between the air ducts 1 can be changed through the expansion joint 3, thereby facilitating the operation of the blind plate.

[0033] The present invention is described by preferred embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. The present invention is not limited to the specific embodiments disclosed herein, and other embodiments falling within the claims of this application are within the scope of protection of the present invention.

Claims

1. A gas operation blind plate operating device, characterized in that: The invention comprises a plurality of air guide pipes (1), wherein the air guide pipes (1) are flange-connected to each other, manual butterfly valves (2) are installed at both ends of the air guide pipes (1), expansion joints (3) are installed between the air guide pipes (1), blind plate operating components (4) are installed between the air guide pipes (1), and a pair of release components (5) are installed on the air guide pipes (1); the release components (5) discharge the gas inside the air guide pipes (1); the blind plate operating components (4) comprise a flange connection pipe (41), and a flange connection plate (42) is fixed at one end of the flange connection pipe (41) away from the air guide pipe (1), and the flange connection plate (42) is connected to the air guide pipe (1) by a flange. The flange connection plate (42) is connected by three bolts (49), and a telescopic rod (43) is installed on the flange connection plate (42), and the telescopic rod (43) is used to adjust the distance between the flange connection plates (42); a closing plate (44) is installed on the bolt (49) at one end away from the telescopic rod (43); the closing plate (44) includes a solid plate (45), a hollow plate (46) and a connecting plate (47), and the connecting plate (47) connects the solid plate (45) and the hollow plate (46) together; a connecting hole (48) is opened in the middle of the connecting plate (47); the closing plate (44) is freely rotatable with the bolt (49) as the central axis.

2. A gas operation blind plate operating device according to claim 1, characterized in that: The distances between the bolts (49) are equal; the distance between the connecting hole (48) and the edge of the solid plate (45) away from the connecting hole (48) is smaller than the distance between the bolts (49); the distance between the connecting hole (48) and the side of the hollow plate (46) away from the connecting hole (48) is smaller than the distance between the bolts (49) and the bolts (49).

3. A gas operation blind plate operating device according to claim 1, characterized in that: The flange connection plate (42) is provided with a flange positioning hole (421), the connection plate (47) is provided with a pair of connection positioning holes (471), and the connection positioning holes (471) are symmetrically arranged on both sides of the connection hole (48); a pin shaft (472) is detachably mounted on the flange connection plate (42); the pin shaft (472) passes through the flange positioning hole (421) and the connection positioning hole (471).

4. A gas operation blind plate operating device according to claim 3, characterized in that: The relief assembly (5) comprises a relief pipe (51), on which a relief valve (52) is installed, and a sampling pipe (53) is installed on the side of the relief pipe (51), on which a sampling valve (54) is installed.

5. A gas operation blind plate operating device according to claim 1, characterized in that: The bolt (49) comprises a nut (491), a sliding rod (492) being fixed to the nut (491), and a threaded rod (493) being fixed to one end of the sliding rod (492) away from the nut (491); a threaded cylinder (422) connected to the threaded rod (493) is fixedly mounted on the flange connection plate (42); and the connection plate (47) is mounted on the sliding rod (492).

6. A gas operation blind plate operating device according to claim 1, characterized in that: Sealing rings (461) are fixed on both sides of the hollow plate (46), and sealing protrusions (451) are fixed on both sides of the solid plate (45).

7. A gas operation blind plate operating device according to claim 1, characterized in that: The expansion joint (3) is flange-connected to the air guide pipe (1).

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