Intelligent gas explosion anti-blocking device

Abstract

The utility model discloses an intelligent gas explosion anti-blocking device which comprises a gas tank, a pulse electromagnetic valve and a cleaning sleeve, a gas inlet pipeline is arranged on the gas tank, a gas inlet valve is arranged on the gas inlet pipeline, a gas outlet branch pipe is arranged on the gas tank, the gas outlet branch pipe is arranged on the periphery of a stock bin, the pulse electromagnetic valve is connected with the gas outlet branch pipe through a pipeline, and the pulse electromagnetic valve is connected with the cleaning sleeve. The end, away from the pulse electromagnetic valve, of the sweeping sleeve is connected with the stock bin, and an outlet of the sweeping sleeve is located in the stock bin. The intelligent gas explosion anti-blocking device provided by the utility model is unlimited in installation and application, can be suitable for most silos or chutes, can work continuously, effectively prevents wall adhesion, ensures the fluidity of materials, enables the materials to be in an activated state all the time, and can also remove arched blocked coal; and the diameter of the radiation pulse which is generated in the stock bin and can be ejected along the bin wall can reach about 2 meters, and the large-range pulse can quickly enable the materials to return to flow so as to prevent the materials from being adhered to the wall, so that a very good wall adhesion prevention effect is realized.

Description

TECHNICAL FIELD

[0001] The application relates to a coal bunker unblocking technology field, in particular to an intelligent gas explosion anti-blocking device. BACKGROUND

[0002] Coal blocking in a raw coal bunker of a thermal power plant is a common problem in the thermal power industry, and the blocked raw coal cannot be normally fed into a boiler, thereby affecting the load and safe operation of the entire unit, and in severe cases, the boiler may be temporarily out of coal and oil combustion must be directly used.

[0003] Common coal blocking points are usually the junction of a raw coal hopper and a coal falling pipe, the coal falling pipe or the gate, and at the present stage, a vibrator, a loosening machine or a rotary unblocking device is usually used for cleaning, which can solve the problem of the material bunker blocking to a certain extent, but also has certain disadvantages, for example, the vibrator may affect the flow of the material, may affect the structure of the material bunker, has relatively high energy consumption and is loud, the loosening machine cannot effectively clean the inner wall of the material bunker, and has high installation cost and large maintenance amount, and the rotary unblocking device cannot clean the upper part of the coal bunker and has high maintenance and installation cost. CONTENT OF THE UTILITY MODEL

[0004] The application aims to provide an intelligent gas explosion anti-blocking device to solve the above problems.

[0005] To achieve the above purpose, the technical scheme of the application is as follows:

[0006] The intelligent gas explosion anti-blocking device comprises a gas tank, a pulse electromagnetic valve and a cleaning sleeve, the gas tank is provided with an air inlet pipeline, the air inlet pipeline is provided with an air inlet valve, the gas tank is provided with an air outlet branch pipe, the air outlet branch pipe is arranged on the periphery of a material bunker, the pulse electromagnetic valve is connected with the air outlet branch pipe, the pulse electromagnetic valve is connected with the cleaning sleeve, one end of the cleaning sleeve away from the pulse electromagnetic valve is connected with the material bunker, and the outlet of the cleaning sleeve is located in the interior of the material bunker.

[0007] Preferably, the pulse electromagnetic valves and the cleaning sleeves are provided in multiple numbers, and the multiple pulse electromagnetic valves and the multiple cleaning sleeves are arranged in a circumferential interval along the material bunker and are arranged in a staggered manner in the up-down direction.

[0008] Preferably, the air inlet pipeline is provided with a check valve, and the check valve is located between the air inlet valve and the gas tank.

[0009] Preferably, the air outlet branch pipe is provided with a filter.

[0010] Preferably, the bottom of the gas tank is provided with an automatic blowdown valve.

[0011] Preferably, the cleaning sleeve is provided with a piston, and the piston is provided with a flow guide groove on the side away from the sidewall of the silo.

[0012] Preferably, the mounting frame is provided with a U-shaped clasp, and the U-shaped clasp is slidably arranged on the mounting frame, and the free end of the U-shaped clasp is arranged towards the silo; and a locking bolt is slidably arranged on the U-shaped clasp, and the threaded end of the locking bolt is threadedly connected with the mounting frame.

[0013] Preferably, the mounting frame is provided with a U-shaped clasp, and the U-shaped clasp is slidably arranged on the mounting frame, and the free end of the U-shaped clasp is arranged towards the silo; and a locking bolt is slidably arranged on the U-shaped clasp, and the threaded end of the locking bolt is threadedly connected with the mounting frame.

[0014] The intelligent gas explosion anti-blocking device provided by the application has no installation application restrictions, can be applied to most silos or chutes, is extremely easy to install on a plane or a curved surface regardless of size and shape, has no requirement for wall thickness, does not affect the normal flow of coal in the silo and the chute during module wall installation, has a wide application range, is not affected by space position, equipment type and material in the silo. The pulse electromagnetic valve and the cleaning sleeve can be installed at any position of the silo or the chute, can work continuously, effectively prevent wall sticking, ensure the flowability of the material, keep the material in an activated state, and remove arch-shaped blocked coal. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the application;

[0016] Figure 2 It is a schematic diagram of the cleaning sleeve structure of the application;

[0017] Figure 3 It is a partial enlarged schematic diagram of the position of the piston in the application;

[0018] Figure 4 It is a schematic diagram of the piston structure of the application;

[0019] Figure 5 It is a schematic diagram of the silo structure in the application;

[0020] Figure 6 It is Figure 5 a partial enlarged schematic diagram of position A in the application.

[0021] In the figure:

[0022] 1, gas tank; 10, air inlet pipeline; 11, air inlet valve; 12, check valve; 13, air outlet branch pipe; 14, automatic blowdown valve; 2, silo; 3, pulse electromagnetic valve; 4, cleaning sleeve; 40, piston; 41, flow guide groove; 5, hose; 6, mounting frame; 7, abutting rod; 8, U-shaped clasp; 9, locking bolt. DETAILED DESCRIPTION

[0023] The present application will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams, illustrating only the basic structure of the present application, and therefore only show the components relevant to the present application.

[0024] like Figures 1-6 As shown, an intelligent gas explosion prevention device includes a gas tank 1, a pulse solenoid valve 3, and a cleaning sleeve 4. The gas tank 1 is provided with an air inlet pipe 10 and an air inlet valve 11. The gas tank 1 is provided with an air outlet branch pipe 13, which is located on the periphery of the silo 2. The pulse solenoid valve 3 is connected to the air outlet branch pipe 13 and the cleaning sleeve 4. The end of the cleaning sleeve 4 away from the pulse solenoid valve 3 is connected to the silo 2, and the outlet of the cleaning sleeve 4 is located inside the silo 2.

[0025] The pulse solenoid valve 3 is set to move intermittently through the PLC program. For example, when there are two pulse solenoid valves, the left pulse solenoid valve 3 is first controlled to take in air and then closes. Then the right pulse solenoid valve 3 is controlled to take in air and then closes. This continuously blows the material inside the hopper 2 to prevent the material from sticking or adhering to the hopper wall.

[0026] The compressed airflow enters the interior of the hopper 2 through the cleaning sleeve 4 under the control of the pulse solenoid valve 3.

[0027] Compressed air passes through the pulse solenoid valve 3 and the cleaning sleeve 4 installed on the wall of the silo 2, forming a strong radiation pulse inside the silo 2. The radiation pulse spreads outward along the silo wall, which can disperse the material adhering to the silo wall. The generated radiation pulse can be sprayed along the silo wall with a diameter of nearly 2 meters. The large-scale pulse can quickly restore the flow of the material to prevent the material from sticking to the wall, thus achieving a very good anti-sticking effect.

[0028] In practice, the instantaneous air pressure during injection can reach an impact force of 0.7 MPa. After about 0.5 seconds, the piston 40 can quickly retract under the control of the pulse solenoid valve 3 to prevent material from entering the cleaning sleeve 4 and causing blockage.

[0029] Meanwhile, the retraction of piston 40 can also reduce the contact area with the material in hopper 2, thereby reducing the wear of piston 40 by the material; in specific implementation, piston 40 can be made of high hardness wear-resistant stainless steel.

[0030] When piston 40 opens, the airflow forms a ring-shaped impact force, commonly known as an "air knife". The "air knife" can also form lubrication between the wall of bin 2 and the material, thereby increasing the fluidity of the material and avoiding the blockage caused by the material sticking and caking to the wall of bin 2.

[0031] Especially for coal bunkers, the annular airflow impacts the flow of coal, preventing coal blockage.

[0032] The installation application of the anti-blocking device provided in the application is unrestricted, and the anti-blocking device can be applied to most silos or chutes, regardless of size and shape, and is extremely easy to install on a plane or a curved surface, without requirements for wall thickness. The module is installed against a wall without affecting the normal flow of coal in the silo and the chute. In addition, the application range is wide, and the anti-blocking device is not affected by space position, equipment type, and materials in the silo. The pulse electromagnetic valve 3 and the cleaning sleeve 4 can be installed at any position of the silo or the chute, can work continuously, effectively prevent wall sticking, ensure the fluidity of the materials, keep the materials in an activated state, and can also remove arch-shaped blocked coal.

[0033]

[0034] Table 1: Comparison of silo temperature with and without installation of the anti-blocking device

[0035] As shown in Table 1, the intelligent gas explosion anti-blocking device provided in the application can effectively improve the blocking condition after installation.

[0036] It should be noted that the pulse electromagnetic valve 3 has been relatively common in the field of air cannons, and is prior art. In the embodiments, the detailed structure and working principle of the pulse electromagnetic valve 3 will not be described again.

[0037] In some further embodiments, the number of pulse electromagnetic valves 3 and cleaning sleeves 4 is correspondingly multiple, and the multiple pulse electromagnetic valves 3 and cleaning sleeves 4 are arranged in a circumferential direction and are staggered in an up-down direction.

[0038] The number of pulse electromagnetic valves 3 and cleaning sleeves 4 can be three or other numbers, and the specific number should be based on the size specification of the silo 2.

[0039] The pulse electromagnetic valves 3 and the cleaning sleeves 4 can be arranged in a circumferential direction and staggered in an up-down direction of the silo 2, so as to ensure uniform blowing of the materials.

[0040] In some further embodiments, a check valve 12 is arranged on the air inlet pipeline 10, and the check valve 12 is located between the air inlet valve 11 and the gas tank 1.

[0041] The check valve 12 is used to prevent gas backflow.

[0042] In some further embodiments, a filter is arranged on the air outlet branch pipe 13.

[0043] The filter is used to filter the gas to some extent, avoid affecting the cleaning sleeve 4, and also avoid impurities entering the inside of the silo 2.

[0044] In some further embodiments, an automatic blowdown valve 14 is arranged at the bottom of the gas tank 1. In some further embodiments, an automatic blowdown valve 14 is arranged at the bottom of the gas tank 1.

[0045] The automatic blowdown valve 14 is used to discharge the impurities in the gas tank 1.

[0046] In some further embodiments, the cleaning sleeve 4 is elastically provided with a piston 40, and the side wall of the piston 40 away from the bin 2 is provided with a flow guide groove 41.

[0047] The piston 40 is controlled to move by the pulse electromagnetic valve 3, wherein the side wall of the piston 40 away from the bin 2 is provided with the flow guide groove 41, the flow guide groove 41 is arranged at the edge of the side wall of the piston 40 and is arranged around the edge, and the flow guide groove 41 is arranged to be inclined, the length direction of the flow guide groove 41 is inclined to the radial direction of the piston 40, so that the annular airflow sprayed by the piston 40 promotes the tendency of the material to form a spiral, thereby improving the impact effect on the material.

[0048] In some further embodiments, a mounting frame 6 is further included, and the mounting frame 6 is provided with three resistance rods 7 screwed thereon.

[0049] The mounting frame 6 is annular plate-shaped structure, and the resistance rods 7 are arranged to penetrate the mounting frame 6, when the resistance rods 7 are rotated towards the bin 2, the resistance rods 7 abut against the outer wall of the bin 2, thereby achieving the fixation of the mounting frame 6; by adjusting the resistance rods 7, the installation height of the mounting frame 6 can be changed, thereby better fixing the air outlet branch pipe 13, the pulse electromagnetic valve 3 and the hose 5 connected therebetween.

[0050] In some further embodiments, the mounting frame 6 is provided with a U-shaped clasp 8, the U-shaped clasp 8 is arranged to slide on the mounting frame 6, and the free end of the U-shaped clasp 8 is arranged to face the bin 2; a locking bolt 9 is arranged to slide on the U-shaped clasp 8, and the screwed end of the locking bolt 9 is threadedly connected with the mounting frame 6.

[0051] When the locking bolt 9 is screwed, the head of the screwing bolt presses the U-shaped clasp 8 to slide towards the bin 2, thereby gradually reducing the clamping area formed between the U-shaped clasp 8 and the mounting frame 6, and finally clamping the hose 5 between the air outlet branch pipe 13 and the pulse electromagnetic valve 3.

[0052] The air outlet branch pipe 13 can also be connected to the mounting frame 6 by bolts.

[0053] Obviously, the above embodiments are only examples for clearly illustrating, and are not intended to limit the implementation modes. Based on the above description, other different forms of changes or variations can also be made by those skilled in the art. Here, all the implementation modes are not required or can not be exhausted. The changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. Intelligent air burst anti-blocking device, characterized in that, Including gas tank (1), pulse solenoid valve (3) and cleaning sleeve (4), the gas tank (1) is equipped with air inlet pipeline (10), the air inlet pipeline (10) is equipped with air inlet valve (11), the gas tank (1) is equipped with gas outlet branch pipe (13), the gas outlet branch pipe (13) is arranged at the periphery of the stock bin (2), the pulse solenoid valve (3) is connected with the gas outlet branch pipe (13) pipeline, the pulse solenoid valve (3) is connected with the cleaning sleeve (4), the cleaning sleeve (4) is connected with the stock bin (2) at the end away from the pulse solenoid valve (3), and the outlet of the cleaning sleeve (4) is located in the interior of the stock bin (2).

2. The intelligent air burst anti-blocking device according to claim 1, characterized in that, The number of the pulse solenoid valve (3) and the cleaning sleeve (4) is correspondingly provided with multiple, and multiple pulse solenoid valves (3) and cleaning sleeves (4) are arranged in the circumferential direction of the stock bin (2) and are staggered in the up-down direction.

3. The intelligent air burst anti-blocking device according to claim 2, characterized in that, The air inlet pipeline (10) is provided with a check valve (12), and the check valve (12) is located between the air inlet valve (11) and the gas tank (1).

4. The intelligent air burst anti-blocking device according to claim 3, characterized in that, The gas outlet branch pipe (13) is provided with a filter.

5. The intelligent air burst anti-blocking device according to claim 4, characterized in that, The bottom of the gas tank (1) is provided with an automatic blowdown valve (14).

6. The intelligent air burst anti-blocking device according to claim 5, characterized in that, The cleaning sleeve (4) is elastically provided with a piston (40), and the side wall of the piston (40) away from the stock bin (2) is provided with a flow guide groove (41).

7. The intelligent air burst anti-blocking device according to claim 6, characterized in that, Further comprising a mounting bracket (6), the mounting bracket (6) is screw-connected with a abutting rod (7); the abutting rod (7) is circumferentially spaced apart by three along the stock bin (2).

8. The intelligent air burst anti-blocking device according to claim 7, characterized in that, The mounting bracket (6) is provided with a U-shaped clasp ring (8), the U-shaped clasp ring (8) is slidingly arranged on the mounting bracket (6), and the free end of the U-shaped clasp ring (8) is arranged towards the stock bin (2); the U-shaped clasp ring (8) is slidingly provided with a locking bolt (9), and the screw-in end of the locking bolt (9) is threadedly connected with the mounting bracket (6).

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