Safety protection device for fuel gas conveying

Abstract

The utility model belongs to the technical field of fuel gas conveying, and discloses a safety protection device for fuel gas conveying, the safety protection device comprises two partition assemblies, a deflation assembly and a first sensor, the deflation assembly comprises a second sensor and a connecting seat, a first opening penetrating through the side wall of one side of a fuel gas pipeline is formed in the connecting seat, and a connecting pipe is arranged on the connecting seat; the connecting pipe communicates with an exhaust pipe, a cover plate is rotationally arranged in the exhaust pipe, a driving unit is arranged on the exhaust pipe, and an exhaust unit is arranged on one side in the exhaust pipe. The driving unit drives the cover plate to rotate, and the exhaust unit exhausts residual gas in the section of gas pipeline. When the second sensor detects that the concentration of the outside gas is too high, the driving unit drives the cover plate to rotate, the communicating position of the exhaust pipe and the connecting pipe is blocked again, the exhaust unit continues to blow, circulation of outside air is accelerated, and the outside gas is easier to disperse. And when the concentration of the outside gas is reduced again, the driving assembly drives the cover plate to move again, and the gas in the gas pipeline is exhausted.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas delivery technical field, especially a kind of safety protection device for gas delivery. BACKGROUND

[0002] Gas is the general term of gaseous fuel, it can burn and release heat, for residents and industrial enterprises use, there are many kinds of gas, mainly natural gas, artificial gas, liquefied petroleum gas and biogas, coal gas, the main component of gas is just methane, methane is harmless to human physiology, but has asphyxiating effect, when its concentration reaches 10% in air, can make people suffocate to death, when air methane content reaches 5-15%, meet fire source and explode, there is great harm in gas delivery process once leakage, there is explosion and poisoning risk, need to be prevented.

[0003] In the Chinese utility model patent with publication No. CN216113433U, a kind of safety protection device for gas delivery, including transport pipeline, the rear side wall of transport pipeline is fixedly installed with partition device, the top of transport pipeline is provided with gas release device, gas release device includes second support plate, the top of second support plate is opened with vent, second support plate is slidably sleeved with second sliding plate, the top of second support plate is fixedly installed with box, the inside of box is provided with blowing device, blowing device is extracted before maintenance personnel repairs pipeline, prevent maintenance personnel from explosion in repair process.

[0004] For the above-mentioned related technology, the inventor believes that the following defects exist: the blowing device of the above-mentioned device can quickly discharge all the gas in the transport pipeline, which may cause the gas concentration in the external air to be too high, thereby increasing the risk of explosion and threatening the health and safety of the workers. UTILITY MODEL CONTENT

[0005] In order to solve the above problems, the utility model provides a kind of safety protection device for gas delivery.

[0006] The above technical purpose of the utility model is realized through the following technical scheme: a safety protection device for gas conveying, which comprises a partition assembly arranged on a gas pipeline, a gas releasing assembly and a first sensor arranged in the gas pipeline, the partition assembly is two, the two partition assemblies are arranged on the gas pipeline at intervals, the gas releasing assembly comprises a second sensor and a connecting seat arranged on the gas pipeline, a first opening penetrating through one side wall of the gas pipeline is formed in the connecting seat, a connecting pipe is vertically arranged at the first opening of the connecting seat, a horizontally arranged exhaust pipe is communicated with the connecting pipe, a cover plate is rotatably arranged above the connecting pipe in the exhaust pipe, a driving unit for driving the cover plate to rotate is arranged on the exhaust pipe, an exhaust unit is arranged on the exhaust pipe away from the cover plate, and the second sensor is arranged on the outer wall of the gas pipeline in the blowing direction of the exhaust unit.

[0007] Through the above technical scheme, the partition assembly and the gas releasing assembly are arranged. In the initial state, the cover plate blocks the communication between the connecting pipe and the exhaust pipe, thereby ensuring the normal conveying of the gas in the gas pipeline. When the first sensor detects that the gas concentration in the gas pipeline approaches or drops to the dangerous limit, an alarm is sent, and the two partition assemblies are started to isolate the gas pipeline. Subsequently, the driving unit drives the cover plate to rotate, so that the cover plate blocks the pipe opening of the exhaust pipe away from the exhaust unit. At this time, the communication between the exhaust pipe and the connecting pipe is opened, and the residual gas in the gas pipeline is discharged through the exhaust unit, thereby ensuring the safety of the staff during maintenance. When the second sensor detects that the external gas concentration is too high, the driving unit drives the cover plate to rotate again to block the communication between the exhaust pipe and the connecting pipe. The exhaust unit continues to blow to accelerate the flow of external air, so that the external gas is more easily dispersed. When the external gas concentration decreases again, the driving assembly drives the cover plate to move again to discharge the gas in the gas pipeline. In this way, the gas in the gas pipeline is discharged, thereby avoiding the risk of explosion caused by the excessive speed of gas discharge and threatening the health and safety of the staff.

[0008] Further, the partition assembly comprises a fixed plate, both sides of the fixed plate are connected with the gas pipeline, a communication hole is formed in the fixed plate between the two gas pipelines, a through groove is formed in the fixed plate, a sliding plate is slidably arranged in the through groove, a through hole is formed in the sliding plate, a first electric push rod is arranged on the top of the fixed plate, a connecting block is arranged on the sliding plate, and the cylinder body of the first electric push rod is connected with the fixed plate and the piston rod is connected with the connecting block.

[0009] By adopting the technical scheme, the fixed plate, the communication hole, the sliding plate and the first electric push rod are arranged, in the initial state, the through hole is communicated with the communication hole, and the gas can be conveyed in the gas pipeline.

[0010] Further, the lower part of the exhaust pipe away from the exhaust unit is rotatably provided with a rotating shaft, the cover plate is connected with the rotating shaft, and the driving unit comprises a mounting seat arranged on the exhaust pipe, the mounting seat is provided with a driving motor, and the output shaft of the driving motor is connected with the rotating shaft.

[0011] By adopting the technical scheme, the rotating shaft, the mounting seat and the driving motor are arranged, the rotating shaft is driven to rotate by the driving motor, so that the cover plate is driven to rotate.

[0012] Further, the gas pipeline between the partition assembly and the connecting seat is provided with a fixed seat, the fixed seat is provided with a second opening penetrating through the side wall of the gas pipeline, the fixed seat is provided with a fixed strip at the second opening, the fixed strip is provided with a sliding groove, the two sliding grooves are opposite to each other, and one sealing plate is slidably arranged in the two sliding grooves.

[0013] By adopting the technical scheme, the fixed seat, the second opening, the fixed strip and the sealing plate are arranged, in the initial state, the sealing plate blocks the second opening, so that the gas can be normally conveyed in the gas pipeline, when the gas in the gas pipeline is discharged, the sealing plate is slid, so that the second opening is no longer blocked, the external air can enter the gas pipeline through the second opening, the air in the gas pipeline is circulated, and the effect of discharging the gas in the gas pipeline is better.

[0014] Further, one end of the rotating shaft penetrates through the exhaust pipe and is provided with a gear, the fixed seat is provided with a sliding groove, the sliding groove is slidably provided with a rack, the rack is engaged with the gear, the rack is provided with a connecting strip near one side of the sealing plate, and the connecting strip is connected with the sealing plate.

[0015] By adopting the technical scheme, the gear, the sliding groove, the rack and the connecting strip are arranged, the rotating shaft is rotated to drive the cover plate and the gear to rotate, the cover plate is rotated to open the communication between the exhaust pipe and the connecting pipe, the gear is rotated to drive the rack to slide, so that the connecting strip and the sealing plate are moved. The rotation of the cover plate and the movement of the sealing plate are synchronous, which is more convenient.

[0016] Further, the exhaust unit comprises a mounting frame arranged in the exhaust pipe, the mounting frame is provided with an exhaust motor, and the output shaft of the exhaust motor is provided with an exhaust fan.

[0017] By adopting the technical scheme, the mounting rack, the exhaust motor and the exhaust fan are arranged, the exhaust motor drives the exhaust fan to rotate, and air flow is driven.

[0018] Further, a second electric push rod is vertically arranged above the exhaust pipe top and the piston rod of the second electric push rod penetrates the exhaust pipe top downward and is provided with a rubber block.

[0019] By adopting the technical scheme, the second electric push rod and the rubber block are arranged, in the initial state, the rubber block presses the cover plate to ensure that the cover plate will not move under the action of the gas pressure, before the cover plate is rotated, the rubber block is moved by the second electric push rod to separate the rubber block from the cover plate.

[0020] In summary, the utility model has the following beneficial effects: setting the partition assembly and the exhaust assembly, in the initial state, the cover plate blocks the communication between the connecting pipe and the exhaust pipe, ensures that the gas is normally conveyed in the gas pipeline, when the first sensor detects that the gas concentration in the gas pipeline approaches or drops to the dangerous limit, an alarm is sent, and the two partition assemblies are started at the same time to isolate the gas pipeline, then the cover plate is driven to rotate by the driving unit, so that the cover plate blocks the exhaust pipe away from the pipe opening of the exhaust unit, at this time, the communication between the exhaust pipe and the connecting pipe is opened, the residual gas in the gas pipeline is exhausted by the exhaust unit, and the safety of the staff during maintenance is ensured, when the second sensor detects that the external gas concentration is too high, the cover plate is driven to rotate by the driving unit, the communication between the exhaust pipe and the connecting pipe is blocked again, the exhaust unit continues to blow, the external air circulation is accelerated, and the external gas is more easily dispersed, when the external gas concentration is reduced again, the cover plate is driven to move again by the driving assembly, the gas in the gas pipeline is exhausted, and the gas in the gas pipeline is exhausted in this way, so that the gas concentration in the external air is prevented from being too high due to the too fast exhaust speed of the gas, so that the explosion risk is increased and the health and safety of the staff are threatened. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is the overall structure schematic diagram of the embodiment of the utility model;

[0022] Figure 2 is the structure schematic diagram of the partition assembly and the exhaust assembly of the embodiment of the utility model;

[0023] Figure 3 is Figure 2 the enlarged view of A of

[0024] Figure 4 is the structure schematic diagram of the first opening and the second opening of the embodiment of the utility model;

[0025] Figure 5 is the internal structure schematic diagram of the exhaust pipe of the embodiment of the utility model;

[0026] Figure 6 is a structural schematic view of the driving unit of the embodiment of the utility model;

[0027] Figure 7 is a structural schematic view of the partition assembly of the embodiment of the utility model.

[0028] In the figure: 1, gas pipeline; 10, first sensor; 20, partition assembly; 21, fixed plate; 22, communication hole; 23, through slot; 24, sliding plate; 25, through hole; 26, first electric push rod; 27, connecting block; 30, gas release assembly; 31, second sensor; 32, connecting seat; 33, first opening; 34, connecting pipe; 35, exhaust pipe; 36, cover plate; 37, rotating shaft; 40, driving unit; 41, mounting seat; 42, driving motor; 50, exhaust unit; 51, mounting frame; 52, exhaust motor; 53, exhaust fan; 60, fixed seat; 61, second opening; 62, fixed strip; 63, sliding groove; 64, sealing plate; 65, gear; 66, sliding groove; 67, rack; 68, connecting strip; 70, second electric push rod; 71, rubber block. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments; based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0030] As Figures 1-7As shown, the embodiment of the present application discloses a kind of safety protection device for gas delivery, including partition component 20, gas release component 30, first sensor 10, partition component 20, gas release component 30 It is set on gas pipeline 1, first sensor 10 is set in gas pipeline 1, detects the gas concentration in gas pipeline 1.Partition component 20 has two, two partition component 20 is spaced apart on gas pipeline 1.Gas release component 30 includes second sensor 31 and the connecting seat 32 set on gas pipeline 1, first opening 33 is set on connecting seat 32, which penetrates the side wall of gas pipeline 1, connecting pipe 34 is vertically arranged on connecting seat 32 at first opening 33, exhaust pipe 35 is communicated and arranged horizontally on connecting pipe 34, cover plate 36 is rotatably arranged inside exhaust pipe 35 above connecting pipe 34, drive unit 40 is arranged on exhaust pipe 35 and drives the rotation of cover plate 36, exhaust unit 50 is arranged on the side of exhaust pipe 35 away from cover plate 36, and second sensor 31 is arranged on the outer wall of gas pipeline 1 in the gas blowing direction of exhaust unit 50.Each section of gas pipeline 1 is provided with one safety protection device to realize accurate detection and protection of each section of gas pipeline 1.In initial state, cover plate 36 blocks the communication between connecting pipe 34 and exhaust pipe 35, to ensure that gas is normally transported in gas pipeline 1, when first sensor 10 detects that the gas concentration in the section of gas pipeline 1 is close to or decreases to the dangerous limit, an alarm is sent, and two partition components 20 are started at the same time to isolate the section of gas pipeline 1.Then drive cover plate 36 to rotate by drive unit 40, so that cover plate 36 blocks the nozzle of exhaust pipe 35 away from exhaust unit 50, at this time the communication between exhaust pipe 35 and connecting pipe 34 is opened, and the residual gas in the section of gas pipeline 1 is discharged by exhaust unit 50, to ensure the safety of staff during maintenance.When second sensor 31 detects that the external gas concentration is too high, drive cover plate 36 to rotate by drive unit 40, to block the communication between exhaust pipe 35 and connecting pipe 34 again, exhaust unit 50 continues to blow, to accelerate the flow of external air, so that external gas is more easily dispersed.When the external gas concentration decreases again, drive assembly drives cover plate 36 to move again, to discharge the gas in gas pipeline 1, so as to discharge all the gas in gas pipeline 1, to avoid that the discharge speed of gas is too fast to cause the gas concentration in external air to be too high, thereby increasing the risk of explosion and threatening the health and safety of staff.

[0031] Specifically, the exhaust unit 50 includes a mounting frame 51 arranged in the exhaust pipe 35, and an exhaust motor 52 arranged on the mounting frame 51. An output shaft of the exhaust motor 52 is provided with an exhaust fan 53. The exhaust motor 52 drives the exhaust fan 53 to rotate, thereby driving the air flow. A second electric push rod 70 is arranged vertically above the cover plate 36 at the top of the exhaust pipe 35. The piston rod of the second electric push rod 70 penetrates downward through the top of the exhaust pipe 35 and is provided with a rubber block 71. In the initial state, the rubber block 71 presses the cover plate 36 to ensure that the cover plate 36 will not move under the action of the gas pressure. Before rotating the cover plate 36, the rubber block 71 is moved by the second electric push rod 70 to separate the rubber block 71 from the cover plate 36

[0032] When arranged, the partition assembly 20 includes a fixed plate 21 connected to the gas pipelines 1 on both sides. A communication hole 22 is arranged between the two gas pipelines 1 on the fixed plate 21. A through slot 23 is arranged in the fixed plate 21. A sliding plate 24 is arranged in the through slot 23 in a sliding manner. A through hole 25 is arranged on the sliding plate 24. In the initial state, the through hole 25 communicates with the communication hole 22 to ensure that the gas can be conveyed in the gas pipeline 1. A first electric push rod 26 is arranged on the top of the fixed plate 21. A connecting block 27 is arranged on the sliding plate 24. The cylinder body of the first electric push rod 26 is connected to the fixed plate 21, and the piston rod is connected to the connecting block 27. When the partition assembly 20 is started, the piston rod of the first electric push rod 26 is retracted, driving the connecting block 27 and the sliding plate 24 to move, so that the through hole 25 is misaligned with the communication hole 22, and the sliding plate 24 blocks the two communication holes 22, so that the gas cannot pass through.

[0033] A rotating shaft 37 is arranged at the lower part of the exhaust pipe 35 away from the exhaust unit 50. The cover plate 36 is connected to the rotating shaft 37. The driving unit 40 includes a mounting seat 41 arranged on the exhaust pipe 35. A driving motor 42 is arranged on the mounting seat 41. The output shaft of the driving motor 42 is connected to the rotating shaft 37. The driving motor 42 drives the rotating shaft 37 to rotate, thereby driving the cover plate 36 to rotate.

[0034] Specifically, the gas pipeline 1 between the partition assembly 20 and the connecting seat 32 is provided with a fixing seat 60, the fixing seat 60 is provided with a second opening 61 penetrating through one side wall of the gas pipeline 1, the fixing seat 60 is provided with a fixing strip 62 at the second opening 61, the fixing strip 62 is provided with a sliding groove 63, the two sliding grooves 63 are opposite to each other, and a sealing plate 64 is slidably arranged in the two sliding grooves 63. In the initial state, the sealing plate 64 blocks the second opening 61, so as to ensure the normal conveying of the gas in the gas pipeline 1. When the gas in the gas pipeline 1 is discharged, the sealing plate 64 is slid to make the second opening 61 no longer blocked, so that the external air can enter the gas pipeline 1 through the second opening 61, the air in the gas pipeline 1 flows, and the effect of discharging the gas in the gas pipeline 1 is better. One end of the rotating shaft 37 penetrates through the exhaust pipe 35 and is provided with a gear 65, the fixing seat 60 is provided with a sliding groove 66, the sliding groove 66 is slidably provided with a rack 67, the rack 67 is engaged with the gear 65, the rack 67 is provided with a connecting strip 68 near one side of the sealing plate 64, the connecting strip 68 is connected with the sealing plate 64, the rotating shaft 37 is rotated to drive the cover plate 36 and the gear 65 to rotate, the cover plate 36 is rotated to make the communication between the exhaust pipe 35 and the connecting pipe 34 be opened, the gear 65 is rotated to drive the rack 67 to slide, so as to drive the connecting strip 68 and the sealing plate 64 to move. The rotation of the cover plate 36 and the movement of the sealing plate 64 are synchronous, which is more convenient.

[0035] The use principle of the safety protection device for gas delivery in the embodiment is as follows: when the first sensor 10 detects that the gas concentration in the gas pipeline 1 approaches or drops to a dangerous limit, an alarm is sent, and two first electric push rods 26 are started at the same time, the piston rod of the first electric push rod 26 is retracted, the connecting block 27 and the sliding plate 24 are moved, the through hole 25 is misaligned with the communication hole 22, the sliding plate 24 blocks the two communication holes 22, so that the gas cannot pass through, and the gas pipeline 1 is isolated. Then the second electric push rod 70 is started, the piston rod of the second electric push rod 70 is retracted, and the rubber block 71 is lifted. The motor 42 is driven to drive the rotating shaft 37 to rotate, the cover plate 36 and the gear 65 are rotated, the cover plate 36 is rotated to block the exhaust pipe 35 away from the nozzle of the exhaust unit 50, at this time the communication between the exhaust pipe 35 and the connecting pipe 34 is opened, the gear 65 is rotated to drive the rack 67 to slide, so as to drive the connecting strip 68 and the sealing plate 64 to move. Then the exhaust motor 52 is started to drive the exhaust fan 53 to rotate, and the residual gas in the gas pipeline 1 is exhausted. When the second sensor 31 detects that the gas concentration outside is too high, the motor 42 is driven to drive the cover plate 36 to rotate, and the communication between the exhaust pipe 35 and the connecting pipe 34 is blocked again, the exhaust fan 53 continues to blow, and the outside air is circulated to make the outside gas more easily dispersed. When the outside gas concentration is reduced again, the motor 42 is driven again to drive the cover plate 36 to move, the gas in the exhaust pipe 1 is exhausted, and the gas in the exhaust pipe 1 is exhausted, so that the gas in the exhaust pipe 1 is exhausted, so as to avoid the gas exhaust speed being too fast to cause the gas concentration in the outside air to be too high, thereby increasing the explosion risk and threatening the health and safety of the staff.

[0036] The above only describes the preferred embodiments of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiments. Any technical solution falling within the concept of the present application belongs to the protection scope of the present application. It should be noted that, for ordinary technical personnel in the technical field, some improvements and decorations without departing from the principle of the present application are also considered as the protection scope of the present application.

Claims

1. A safety guard for gas delivery, characterized by: The utility model relates to a gas pipeline safety device, which comprises a partition assembly (20) arranged on a gas pipeline (1), a gas release assembly (30) and a first sensor (10) arranged in the gas pipeline (1), the two partition assemblies (20) are arranged on the gas pipeline (1) at intervals, the gas release assembly (30) comprises a second sensor (31) and a connecting seat (32) arranged on the gas pipeline (1), the connecting seat (32) is provided with a first opening (33) penetrating through the side wall of the gas pipeline (1), a connecting pipe (34) is vertically arranged on the connecting seat (32) at the first opening (33), a horizontal exhaust pipe (35) is connected to the connecting pipe (34), a cover plate (36) is rotatably arranged above the connecting pipe (34) in the exhaust pipe (35), a driving unit (40) is arranged on the exhaust pipe (35) to drive the cover plate (36) to rotate, an exhaust unit (50) is arranged on the exhaust pipe (35) away from the cover plate (36), and the second sensor (31) is arranged on the outer wall of the gas pipeline (1) in the blowing direction of the exhaust unit (50).

2. A safety shield for gas delivery according to claim 1, characterised in that: The partition assembly (20) comprises a fixed plate (21), the fixed plate (21) is connected with the gas pipeline (1) on both sides, a communication hole (22) is arranged on the fixed plate (21) between the two gas pipelines (1), a through groove (23) is arranged in the fixed plate (21), a sliding plate (24) is slidably arranged in the through groove (23), a through hole (25) is arranged on the sliding plate (24), a first electric push rod (26) is arranged on the top of the fixed plate (21), a connecting block (27) is arranged on the sliding plate (24), the cylinder of the first electric push rod (26) is connected with the fixed plate (21), and the piston rod is connected with the connecting block (27).

3. A safety shield for gas delivery according to claim 1, characterized in that: A rotating shaft (37) is rotatably arranged on the lower part of the exhaust pipe (35) away from the exhaust unit (50), the cover plate (36) is connected with the rotating shaft (37), the driving unit (40) comprises a mounting seat (41) arranged on the exhaust pipe (35), a driving motor (42) is arranged on the mounting seat (41), and the output shaft of the driving motor (42) is connected with the rotating shaft (37).

4. A safety shield for gas delivery according to claim 3, characterised in that: A fixed seat (60) is arranged on the gas pipeline (1) between the partition assembly (20) and the connecting seat (32), the fixed seat (60) is provided with a second opening (61) penetrating through the side wall of the gas pipeline (1), a fixed strip (62) is arranged on the fixed seat (60) at the second opening (61), a sliding groove (63) is arranged on the fixed strip (62), the grooves of the two sliding grooves (63) are opposite, and one sealing plate (64) is slidably arranged in the two sliding grooves (63).

5. A safety shield for gas delivery according to claim 4, characterised in that: The rotating shaft (37) penetrates through the exhaust pipe (35) and is provided with a gear (65), a sliding groove (66) is formed in the fixed seat (60), a rack (67) is slidably arranged in the sliding groove (66), the rack (67) is engaged with the gear (65), and the rack (67) is provided with a connecting strip (68) near one side of the sealing plate (64), and the connecting strip (68) is connected with the sealing plate (64).

6. A safety shield for gas delivery according to claim 1, characterized in that: The exhaust unit (50) comprises a mounting frame (51) arranged in the exhaust pipe (35), and the mounting frame (51) is provided with an exhaust motor (52); and an exhaust fan (53) is arranged on an output shaft of the exhaust motor (52).

7. The safety shield of claim 1, wherein: A second electric push rod (70) is vertically arranged above the cover plate (36) at the top of the exhaust pipe (35), and a piston rod of the second electric push rod (70) penetrates through the top of the exhaust pipe (35) downward and is provided with a rubber block (71).

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