Pipeline leakproof structure of pneumatic ash conveying system

Abstract

The utility model discloses a pneumatic ash conveying system pipeline leakproof structure which comprises a lower shell, an ash inlet pipe and an ash outlet pipe, the ash inlet pipe and the ash outlet pipe are arranged in a butt joint mode, the lower shell is arranged at the joint of the ash inlet pipe and the ash outlet pipe in a sleeved mode, the bottom of the lower shell is fixedly connected with a connecting pipe, and the other end of the connecting pipe is fixedly connected with an electric valve. The other end of the electric valve is connected with the ash outlet pipe through a flange, one end of the ash inlet pipe and one end of the ash outlet pipe are both connected with sealing rings in a clamped mode, and the outer side of the connecting position of the ash inlet pipe and the ash outlet pipe is sleeved with a connecting hoop. Dust falls into the transparent box and the connecting pipe from the joint of the dust inlet pipe and the dust outlet pipe, at the moment, the dust in the transparent box blocks a transmitting signal of the infrared transmitter, the infrared receiver cannot receive the signal of the infrared transmitter, then the electric valve is opened, and the dust in the connecting pipe is sucked into the dust outlet pipe through dust conveying power. Therefore, dust is prevented from being accumulated in the connecting pipe, and the effect of pipeline leakage is not affected.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic ash conveying, in particular to a pipeline anti-leakage structure of a pneumatic ash conveying system. Background Art

[0002] Pneumatic conveying, also known as air flow conveying, uses the energy of air flow to transport granular materials along the direction of air flow in a closed pipe. It is a specific application of fluidization technology. During the pneumatic conveying process, the ash particles transported by thermal power plants are relatively large, which makes the inner wall of the pipe easy to wear. Therefore, a leak-proof structure will be set at the pipe connection to ensure the safety of pipeline transportation.

[0003] Among them, after searching, a Chinese patent with announcement number CN220702593U discloses a leakage prevention structure of a pneumatic ash conveying device in a thermal power plant. The above patent uses the structural scheme of an ash collecting box to realize the function of collecting dust when the sealing ring loses the sealing function of the pipeline connection. However, since the ash collecting box can only receive part of the dust, if the operating personnel cannot arrive in time, the inside is easy to be filled up, resulting in poor pipeline leakage prevention effect. Therefore, in order to advance the technology of the industry, better ensure the use of pipeline connection leakage prevention, and improve the competitiveness of core technologies, this application proposes a new implementation scheme of the pipeline connection structure of the pneumatic ash conveying system that is different from the prior art. Utility Model Content

[0004] The utility model aims to solve the problem that the dust collecting box in the existing anti-leakage structure can only receive part of the dust and is easily filled up, resulting in poor anti-leakage effect of the pipeline, and proposes an anti-leakage structure for the pipeline of a pneumatic ash conveying system.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A pipeline anti-leakage structure for a pneumatic ash conveying system comprises a lower shell, an ash inlet pipe and an ash outlet pipe, the ash inlet pipe and the ash outlet pipe are butt-jointed, the lower shell is sleeved on the connection between the ash inlet pipe and the ash outlet pipe, a connecting pipe is fixedly connected to the bottom of the lower shell, an electric valve is fixedly connected to the other end of the connecting pipe, the other end of the electric valve is connected to the ash outlet pipe through a flange, sealing rings are clamped on one end of the ash inlet pipe and the ash outlet pipe, a connecting hoop is sleeved on the outer side of the connection between the ash inlet pipe and the ash outlet pipe, a first sealing cylinder is bonded to the inner wall of the connecting hoop, a transparent box is bonded to the inner wall of one side of the lower shell, an infrared transmitter is fixedly connected to the inner wall of one side of the lower shell, an infrared receiver is fixedly connected to the inner wall of the other side of the lower shell, and the infrared receiver and the infrared transmitter are arranged opposite to each other.

[0007] Furthermore, second sealing cylinders are inserted at both ends of the lower shell, and the two second sealing cylinders are in contact with the outer walls of the ash inlet pipe and the ash outlet pipe respectively.

[0008] Furthermore, the outer wall of the lower shell and the outer wall of the connecting hoop are both threadedly inserted with a plurality of fastening screws.

[0009] Furthermore, the top outer wall of the lower shell is fixedly connected to a support base, and the top of the support base is fixedly connected to the upper shell.

[0010] Furthermore, a processor and a battery are fixedly connected inside the upper shell, and a warning bell and a warning light are fixedly connected to the top outer wall of the upper shell.

[0011] Furthermore, the processor is electrically connected to the battery, the warning bell, the warning light, the electric valve, the infrared transmitter and the infrared receiver.

[0012] Furthermore, the battery is electrically connected to the electric valve, the infrared transmitter and the infrared receiver.

[0013] The beneficial effects of the utility model are:

[0014] 1. Dust falls into the transparent box and the connecting pipe from the connection between the ash inlet pipe and the ash outlet pipe. At this time, the dust in the transparent box blocks the transmission signal of the infrared transmitter, and the infrared receiver cannot receive the signal of the infrared transmitter. Then, the electric valve opens, and the dust in the connecting pipe is sucked into the ash outlet pipe through the power of ash conveying, thereby preventing dust from accumulating in the connecting pipe to avoid affecting the effect of pipeline leakage.

[0015] 2. The ash outlet pipe and the ash inlet pipe are sealed with a sealing ring to prevent dust leakage and affect the ash conveying work.

[0016] 3. Through the setting of infrared transmitter, infrared receiver, processor, warning light and warning bell, it can warn when dust accumulates in the connecting pipe, so that the staff can deal with it in time, which is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional structural schematic diagram of a pipeline leakage prevention structure of a pneumatic ash conveying system proposed by the utility model;

[0018] Figure 2 This is a front cross-sectional structural diagram of the lower part of a pipeline anti-leakage structure of a pneumatic ash conveying system proposed by the utility model;

[0019] Figure 3 This is a schematic diagram of the side cross-sectional structure of the lower part of a pipeline leakage prevention structure of a pneumatic ash conveying system proposed by the utility model;

[0020] Figure 4 The utility model is a front sectional structural schematic diagram of the upper part of a pipeline anti-leakage structure of a pneumatic ash conveying system.

[0021] In the figure: 1. lower shell; 2. ash inlet pipe; 3. ash outlet pipe; 4. connecting pipe; 5. electric valve; 6. sealing ring; 7. connecting hoop; 8. first sealing cylinder; 9. transparent box; 10. infrared transmitter; 11. infrared receiver; 12. second sealing cylinder; 13. fastening screw; 14. supporting seat; 15. upper shell; 16. processor; 17. battery; 18. warning bell; 19. warning light. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] Reference Figure 1-Figure 4 A pipeline leakage prevention structure of a pneumatic ash conveying system comprises a lower shell 1, an ash inlet pipe 2 and an ash outlet pipe 3. The ash inlet pipe 2 and the ash outlet pipe 3 are butt-jointedly arranged. The lower shell 1 is sleeved at the connection between the ash inlet pipe 2 and the ash outlet pipe 3. The bottom of the lower shell 1 is connected with a connecting pipe 4 through a flange. The other end of the connecting pipe 4 is connected with an electric valve 5 through a flange. The other end of the electric valve 5 is connected with the ash outlet pipe 3 through a flange. One end of the ash inlet pipe 2 and the ash outlet pipe 3 are both clamped with a sealing ring 6. The sealing ring 6 is used to seal the ash outlet pipe 3 and the ash inlet pipe 2 to prevent dust leakage. A connecting hoop 7 is sleeved on the outer side of the connection between the ash inlet pipe 2 and the ash outlet pipe 3. The connecting hoop 7 is used to connect the ash inlet pipe 2 and the ash outlet pipe 3. The inner wall of the connecting hoop 7 is bonded with a first sealing cylinder 8. A transparent box 9 is bonded to the inner wall of one side of the lower shell 1, an infrared transmitter 10 is fixed to the inner wall of one side of the lower shell 1 by bolts, and an infrared receiver 11 is fixed to the inner wall of the other side of the lower shell 1 by bolts. Dust falls into the transparent box 9 and the connecting pipe 4 from the connection between the ash inlet pipe 2 and the ash outlet pipe 3. At this time, the dust in the transparent box 9 blocks the transmission signal of the infrared transmitter 10, and the infrared receiver 11 cannot receive the signal of the infrared transmitter 10. Then, the electric valve 5 is opened, and the dust in the connecting pipe 4 is sucked into the ash outlet pipe 3 by the power of ash conveying, thereby preventing dust from accumulating in the connecting pipe 4. The infrared receiver 11 and the infrared transmitter 10 are arranged opposite to each other, and the infrared receiver 11, the infrared transmitter 10, and the transparent box 9 are arranged in a line.

[0024] Both ends of the lower shell 1 are plugged with second sealing cylinders 12, and the two second sealing cylinders 12 are in contact with the outer walls of the ash inlet pipe 2 and the ash outlet pipe 3 respectively, and the ash inlet pipe 2 and the ash outlet pipe 3 are sealed with the lower shell 1 by the second sealing cylinders 12. The outer wall of the lower shell 1 and the outer wall of the connecting hoop 7 are threadedly plugged with a plurality of fastening screws 13, and the lower shell 1 and the connecting hoop 7 are fixed by the fastening screws 13. The top outer wall of the lower shell 1 is fixed with a support seat 14 by bolts, and the top of the support seat 14 is fixed with an upper shell 15 by bolts. The processor 16 and the battery 17 are fixed in the upper shell 15 by bolts. The model of the processor 16 is ARM9TDMI. A warning bell 18 and a warning light 19 are fixed to the top outer wall of the upper shell 15 by bolts. The warning bell 18 and the warning light 19 are used to warn so that the staff can carry out maintenance. The processor 16 is electrically connected to the battery 17, the warning bell 18, the warning light 19, the electric valve 5, the infrared transmitter 10 and the infrared receiver 11. The model of the infrared receiver 11 is TFDU4101-TR3, the model of the infrared transmitter 10 is SFH4255-Z, and the battery 17 is electrically connected to the electric valve 5, the infrared transmitter 10 and the infrared receiver 11.

[0025] The working principle of this embodiment: when in use, ash conveying is carried out through the ash inlet pipe 2 and the ash outlet pipe 3, and the sealing ring 6 is used to seal the ash outlet pipe 3 and the ash inlet pipe 2 to prevent dust leakage. At this time, the infrared receiver 11 can receive the signal emitted by the infrared transmitter 10. If dust leakage occurs, the dust falls into the transparent box 9 and the connecting pipe 4 from the connection between the ash inlet pipe 2 and the ash outlet pipe 3. At this time, the dust in the transparent box 9 blocks the transmission signal of the infrared transmitter 10, and the infrared receiver 11 cannot receive the signal of the infrared transmitter 10, and passes the information to the processor 16 for processing. Then, the processor 16 controls the electric valve 5 to open, and the dust in the connecting pipe 4 is sucked into the ash outlet pipe 3 through the power of ash conveying, thereby preventing dust from accumulating in the connecting pipe 4. At the same time, the warning bell 18 and the warning light 19 give warnings to facilitate maintenance by the staff.

[0026] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pipeline anti-leakage structure for a pneumatic ash conveying system, comprising a lower shell (1), an ash inlet pipe (2) and an ash outlet pipe (3), wherein the ash inlet pipe (2) and the ash outlet pipe (3) are butt-jointed, and the lower shell (1) is sleeved at the connection between the ash inlet pipe (2) and the ash outlet pipe (3), characterized in that: The bottom of the lower shell (1) is fixedly connected to a connecting pipe (4), the other end of the connecting pipe (4) is fixedly connected to an electric valve (5), the other end of the electric valve (5) is connected to the ash outlet pipe (3) via a flange, one end of the ash inlet pipe (2) and the ash outlet pipe (3) are both clamped with a sealing ring (6), the outer side of the connection between the ash inlet pipe (2) and the ash outlet pipe (3) is sleeved with a connecting hoop (7), the inner wall of the connecting hoop (7) is bonded with a first sealing cylinder (8), a transparent box (9) is bonded to the inner wall of one side of the lower shell (1), an infrared transmitter (10) is fixedly connected to the inner wall of one side of the lower shell (1), and an infrared receiver (11) is fixedly connected to the inner wall of the other side of the lower shell (1), and the infrared receiver (11) is arranged opposite to the infrared transmitter (10).

2. The anti-leakage structure of a pipeline of a pneumatic ash conveying system according to claim 1, characterized in that: Second sealing cylinders (12) are inserted at both ends of the lower shell (1), and the two second sealing cylinders (12) are in contact with the outer walls of the ash inlet pipe (2) and the ash outlet pipe (3) respectively.

3. The anti-leakage structure of a pipeline of a pneumatic ash conveying system according to claim 1, characterized in that: The outer wall of the lower shell (1) and the outer wall of the connecting hoop (7) are both threadedly inserted with a plurality of fastening screws (13).

4. The anti-leakage structure of a pipeline of a pneumatic ash conveying system according to claim 1, characterized in that: The top outer wall of the lower shell (1) is fixedly connected to a support seat (14), and the top of the support seat (14) is fixedly connected to an upper shell (15).

5. The anti-leakage structure of a pipeline of a pneumatic ash conveying system according to claim 4, characterized in that: A processor (16) and a battery (17) are fixedly connected inside the upper shell (15), and a warning bell (18) and a warning light (19) are fixedly connected to the top outer wall of the upper shell (15).

6. The anti-leakage structure of a pipeline of a pneumatic ash conveying system according to claim 5, characterized in that: The processor (16) is electrically connected to the battery (17), the warning bell (18), the warning light (19), the electric valve (5), the infrared transmitter (10) and the infrared receiver (11).

7. The anti-leakage structure of a pipeline of a pneumatic ash conveying system according to claim 6, characterized in that: The battery (17) is electrically connected to the electric valve (5), the infrared transmitter (10) and the infrared receiver (11).

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