A micro-mist dust suppression device for power plant coal conveying based on video surveillance

Abstract

The present invention relates to a micro-mist dust suppression device for a power plant coal conveying system based on video monitoring, which includes a video monitoring system for detecting dust, a mobile spraying system for suppressing dust, and a control system; the control system is respectively connected to the video monitoring system and the mobile spraying system for control; the mobile spraying system includes a frame, a central shaft, a traveling crane, a first driving device, an air spraying pipe, a second driving device, and a water mist device; the water mist device includes a water mist feeding assembly and a water mist generator; the water mist feeding assembly includes an air inlet sleeve, an air inlet hole, an air inlet valve, an air inlet ring groove, an air inlet groove, and a connecting hole; the water mist generator includes a compressed air gas source, a water tank, and a generator body; the beneficial effect of the present invention is that through the set mobile spraying system, the water mist enters the air inlet hole through the water mist air inlet valve, flows into the air inlet ring groove from the air inlet hole, enters the air inlet groove through the connecting hole via the air inlet ring groove, and finally dust is reduced through the air outlet hole.

Description

Technical Field

[0001] The present invention relates to the technical field of power plant environmental protection, and in particular to a micro-mist dust suppression device for power plant coal transportation based on video monitoring. Background Art

[0002] The coal shed is an important infrastructure of enterprises. Generally, vehicles enter and leave for loading and unloading frequently every day, and a large amount of dust is inevitably generated inside. It can be clearly seen by the human eye, seriously affecting the working environment and failing to meet the environmental protection requirements. The principle of ordinary high-pressure spray dust suppression determines that it is simply impossible to achieve the dust suppression effect and can only be for show. The independently developed intelligent spray dust suppression system has put the solution to the dust suppression problem in the coal shed on the agenda;

[0003] Among the existing Chinese patents, the patent with the application number CN202122184221.7 and the name of a micro-mist dust suppression device for thermal power plants discloses a micro-mist dust suppression integrated machine, an air compressor, a micro-mist distribution box and an ultrasonic nozzle. The air compressor is connected with an air storage tank through a connecting pipe, the air storage tank is connected with the micro-mist dust suppression integrated machine through a connecting pipe and a compressor, the micro-mist dust suppression integrated machine is connected with the micro-mist distribution box through a conduit, and the micro-mist distribution box is connected with the ultrasonic nozzle through a water-air connecting pipe; the structure of this patent is complex, and it needs to spray at a fixed position with an ultrasonic pen nozzle, with poor effect and needs to be improved;

[0004] There is also a patent with the application number CN202110336822.7 and the name of a micro-mist dust suppression device for a coal storage Euro silo, which discloses a micro-mist dust suppression host and a water-air supply module and a micro-mist generation module connected to the micro-mist dust suppression host; the water-air supply module includes a water supply unit and an air supply unit; the water supply unit includes an annular water tank, a variable frequency pump and a water filter connected in sequence, and the micro-mist dust suppression host is connected to the water filter and the variable frequency pump; the air supply unit includes an air compressor and an air storage tank, and the air compressor, the air storage tank and the micro-mist dust suppression host are connected in sequence; the micro-mist generation module includes a first water-air hose, a supply component and a water-air distributor connected in sequence, the water-air distributor is connected with a micro-mist nozzle, and the micro-mist nozzle is arranged on the spiral frame of the Euro silo; for this patent, the nozzles are fixed, the dust suppression effect is poor, and it also has the same technical problems as above and needs to be solved. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a micro-mist dust suppression device for power plant coal transportation based on video monitoring, which can move for spraying and suppress dust.

[0006] To solve the above technical problems, the present invention provides the following technical solutions:

[0007] A micro-mist dust suppression device for power plant coal conveying based on video monitoring, comprising a video monitoring system for detecting dust, a mobile spraying system for suppressing dust, and a control system; the control system is respectively connected to the video monitoring system and the mobile spraying system for control; the mobile spraying system includes a frame, a central shaft fixedly connected to the frame, a traveling crane slidably connected to the frame, a first driving device for driving the traveling crane to slide along the frame, a gas spraying pipe rotatably connected to one end of the traveling crane, a second driving device for driving the gas spraying pipe to rotate, and a water mist device communicated with the other end of the gas spraying pipe, and the gas spraying pipe rotates around the central shaft and can slide along the central shaft;

[0008] The control system is respectively connected to the first driving device, the second driving device and the water mist device by signals.

[0009] Furthermore, the first driving device includes a rack provided on the frame, a gear engaged with the rack, and a first motor fixedly connected to the traveling crane; the gear is installed at the output end of the first motor.

[0010] Furthermore, the second driving device includes a first sprocket fixedly connected to the gas spraying pipe, a second motor fixedly connected to the traveling crane, a second sprocket fixedly connected to the output end of the second motor, and a chain provided between the first sprocket and the second sprocket.

[0011] Furthermore, a slideway is provided on the frame, and rollers are provided on the traveling crane; both sides of the traveling crane slide along both sides of the slideway; the rollers roll at the bottom of the slideway.

[0012] Furthermore, the water mist device includes a water mist feeding assembly provided at one end of the gas spraying pipe close to the traveling crane, and a water mist generator communicated with the water mist feeding assembly.

[0013] Furthermore, the water mist feeding assembly includes an air inlet sleeve fixedly connected to the traveling crane, an air inlet hole provided on the air inlet sleeve, an air inlet valve communicated with one end of the air inlet hole, an air inlet ring groove provided on the outer wall of the gas spraying pipe and communicated with the other end of the air inlet hole, an air inlet groove provided on the inner wall of the gas spraying pipe, and a connecting hole for communicating the air inlet groove and the air inlet ring groove; the air inlet groove is arranged along the length direction of the gas spraying pipe.

[0014] Furthermore, sealing rings are provided on the air inlet sleeve on both sides of the air inlet ring groove.

[0015] Furthermore, an air outlet hole is provided at one end of the gas spraying pipe far from the traveling crane; the air outlet hole is a conical hole, and the air outlet hole is communicated with the air inlet groove.

[0016] Further, the water mist generator includes a compressed air gas source, a water tank and a generator body; the generator body is a Venturi tube; the Venturi tube is provided with an air inlet pipe, an air outlet pipe and a water inlet pipe; the compressed air gas source is communicated with the air inlet pipe; the air outlet pipe is communicated with the air inlet valve; the water inlet pipe is communicated with the water tank.

[0017] Further, the generator body includes an intermediate thin tube for gas-liquid mixing, reducing pipes respectively communicated with both ends of the intermediate thin tube, and thick pipes respectively communicated with the reducing pipes; one thick pipe is communicated with the air inlet pipe; the other thick pipe is communicated with the air outlet pipe; the middle part of the intermediate thin tube is communicated with the water inlet pipe.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. By providing the video monitoring system and the mobile spraying system, the video monitoring system transmits the measured dust signal to the control system. After judgment by the control system, it drives the mobile spraying system to suppress dust and reduce dust. The controller sends a start signal to the traveling crane, and the traveling crane drives the air spraying pipe into the coal shed. The air spraying pipe rotates and slides while spraying to suppress dust; the composition structure of the micro-mist dust suppression system atomizes water into fine mist particles similar in size to dust particles through mechanical action, and delivers them to the dust source, covering the dust diffusion range with a water mist amount exceeding the dust concentration, so that the mist particles fully combine with the dust and settle, achieving the effect of dust suppression. At the same time, the highly atomized water quickly evaporates, increasing the air humidity in the dust diffusion environment. The water vapor combines with the dust, making the dust particles heavier and larger and settling, similar to the formation process of "rain".

[0020] 2. By providing the water mist feeding assembly, high-pressure water mist enters the air inlet hole from the air inlet valve, flows into the air inlet ring groove from the air inlet hole, passes through the connecting hole through the air inlet ring groove and enters the air inlet groove, and finally conducts dust reduction through the air outlet hole;

[0021] 3. By providing that the air outlet hole is a tapered hole, the blowing mist pressure can be increased and the dust removal is more thorough. Description of the Drawings

[0022] Figure 1 is the control schematic diagram of the present invention;

[0023] Figure 2 is the main structural schematic view of the mobile spraying system;

[0024] Figure 3 is the left sectional view of the mobile spraying system;

[0025] Figure 4 is Figure 2 the enlarged view at E of

[0026] Figure 5 is Figure 2Enlarged view at D;

[0027] Figure 6 Is a schematic front sectional view of a partial structure of a mobile spraying system;

[0028] Figure 7 Is Figure 6 Cross-sectional view at A-A of;

[0029] Figure 8 Is a schematic structural diagram of a water mist generator;

[0030] Figure 9 Is a sectional view of the water mist generator body.

[0031] Explanation of the drawing numbers in the attached drawings:

[0032] 1 - Frame, 11 - Slideway, 2 - Traveling crane, 3 - Central shaft, 4 - Jet pipe, 5 - Second drive assembly, 21 - First motor, 22 - Gear, 23 - Rack, 24 - Roller, 41 - Air inlet groove, 42 - Connecting hole, 43 - Air inlet ring groove, 44 - Sealing ring, 45 - Air inlet hole, 46 - Air inlet valve, 47 - Air outlet hole, 48 - Air inlet sleeve, 51 - First sprocket, 52 - Second sprocket, 53 - Chain, 6 - Water mist generator, 61 - Air inlet pipe, 62 - Water inlet pipe, 63 - Air outlet pipe, 64 - Water tank, 65 - Intermediate thin pipe, 66 - Reducing pipe, 67 - Thick pipe. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0034] Embodiment 1

[0035] Please refer to Figures 1 - 9 as shown in

[0036] A micro mist dust suppression device for a power plant coal conveying based on video monitoring includes a video monitoring system for detecting dust, a mobile spraying system for suppressing dust, and a control system; the control system is respectively connected to the video monitoring system and the mobile spraying system for control; the mobile spraying system includes a frame 1, a central shaft 3 fixedly connected to the frame 1, a traveling crane 2 slidably connected to the frame 1, a first driving device for driving the traveling crane 2 to slide along the frame 1, a jet pipe 4 rotatably connected to one end of the traveling crane 2, a second drive assembly 5 for driving the jet pipe 4 to rotate, and a water mist device communicated with the other end of the jet pipe 4, and the jet pipe 4 rotates around the central shaft 3 and can slide along the central shaft 3;

[0037] The control system is respectively connected to the first driving device, the second drive assembly 5, and the water mist device for signal connection.

[0038] The control system is the S7200 PLC controller of Siemens. The video monitoring system uses high-definition cameras and dust sensors; the high-definition cameras and dust sensors are arranged on the top of the coal shed and are signal-connected to the PLC controller.

[0039] The first driving device includes a rack 23 arranged on the frame 1, a gear 22 meshing with the rack 23, and a first motor 21 fixedly connected to the traveling crane 2; the gear 22 is installed at the output end of the first motor 21.

[0040] The second driving assembly 5 includes a first sprocket 51 fixedly connected to the air injection pipe 4, a second motor fixedly connected to the traveling crane 2, a second sprocket 52 fixedly connected to the output end of the second motor, and a chain 53 arranged between the first sprocket 51 and the second sprocket 52. Chain and sprocket drive is relatively reliable and easy to match.

[0041] The frame 1 is provided with a slideway 11, and the traveling crane 2 is provided with rollers 24; both sides of the traveling crane 2 slide along both sides of the slideway 11; the rollers 24 roll at the bottom of the slideway 11. The traveling crane 2 rolls through the rollers 24 and the slideway 11, reducing the frictional resistance between the two.

[0042] The water mist device includes a water mist feeding assembly arranged at one end of the air injection pipe 4 close to the traveling crane 2 and a water mist generator 6 communicated with the water mist feeding assembly.

[0043] The water mist feeding assembly includes an air intake sleeve 48 fixedly connected to the traveling crane 2, an air intake hole 45 arranged on the air intake sleeve 48, an air intake valve 46 communicated with one end of the air intake hole 45, an air intake ring groove 43 arranged on the outer wall of the air injection pipe 4 and communicated with the other end of the air intake hole 45, an air intake groove 41 arranged on the inner wall of the air injection pipe 4, and a connecting hole 42 for communicating the air intake groove 41 and the air intake ring groove 43; the air intake groove 41 is arranged along the length direction of the air injection pipe 4.

[0044] The end of the air injection pipe 4 far from the traveling crane 2 is provided with an air outlet hole 47.

[0045] The water mist generator 6 is communicated with the air intake valve 46 through a hose.

[0046] The air outlet hole 47 is communicated with the air intake groove 41.

[0047] As Figure 8As shown, the arrows in the figure represent the flow direction of air flow or water mist; the water mist generator 6 includes a compressed air gas source, a water tank 64, and a generator body; the generator body is a Venturi tube; the Venturi tube is provided with an air inlet pipe 61, an air outlet pipe 63, and a water inlet pipe 62; the compressed air gas source is communicated with the air inlet pipe 61; the air outlet pipe 63 is communicated with the intake valve 46; the water inlet pipe 62 is communicated with the water tank 64.

[0048] As Figure 9 shown, the generator body includes an intermediate thin tube 65 for gas-liquid mixing, a variable diameter tube 66 respectively communicated with both ends of the intermediate thin tube 65, and a thick tube 67 respectively communicated with the variable diameter tube 66; the thick tube 67 at one end is communicated with the air inlet pipe 61; the thick tube 67 at the other end is communicated with the air outlet pipe 63; the middle part of the intermediate thin tube 65 is communicated with the water inlet pipe 62.

[0049] The PLC controller is respectively signal-connected to the first motor 21, the second motor, and the gas source (air compressor) of compressed air.

[0050] The usage process of the present invention

[0051] When a vehicle is loading or unloading coal, the high-definition camera and the dust sensor can detect dust signals, and the high-definition camera and the dust sensor send signals to the PLC controller. If dust suppression is required, the PLC controller starts the second motor, and the second motor rotates to drive the second sprocket 52 to rotate. The second sprocket 52 drives the first sprocket 51 to rotate through the chain 53, and the first sprocket 51 drives the air injection pipe 4 fixedly connected thereto to rotate;

[0052] The controller sends a start signal to the air compressor. The compressed air passes through the water mist generator 6, inhales water, turns the water into water mist, and the water mist passes through the intake valve 46 → air inlet hole 45 → air inlet ring groove 43 → connection hole 42 → air inlet groove 41 → air outlet hole 47 → into the coal shed;

[0053] Start the first motor 21, the gear 22 rotates, the gear 22 meshes with the rack 23, and under the action of the meshing force, the traveling crane 2 rolls forward along the slideway 11; driving the air injection pipe 4 to rotate while sliding forward along the central axis 3; the water mist sprayed out from the air outlet hole 47 combines with the dust on the inner wall of the coal shed to perform dust reduction;

[0054] Reverse the rotation of the first motor 21, and the traveling crane 2 moves in the opposite direction. Dust can be suppressed by reciprocatingly blowing water mist;

[0055] The controller inside the composition structure of the micro mist dust suppression system adopts a modular design and has functions such as liquid crystal display and human-computer interaction.

[0056] Through the dust sensors and video monitoring installed on the top of the coal shed, and the supporting use of the cyclic timing control module, the composition structure of the micro-mist dust suppression system with multiple functions is formed, achieving the effect of one machine with multiple functions.

[0057] Embodiment 2

[0058] This embodiment is basically the same as Embodiment 1 in structure.

[0059] The difference lies in that

[0060] As Figure 3 shown, the air outlet hole 47 is a conical hole, and the air outlet hole 47 communicates with the air inlet groove 41.

[0061] By setting the conical hole, the air outlet pressure can be increased, and the dust sweeping is more thorough.

[0062] The working principle of this embodiment is basically the same as that of Embodiment 1, and will not be elaborated here.

[0063] Embodiment 3

[0064] This embodiment is basically the same as Embodiment 1 in structure.

[0065] The difference lies in that

[0066] As Figure 5 shown, sealing rings 44 are provided on the air inlet sleeves 48 on both sides of the air inlet ring groove 43.

[0067] By setting the sealing rings 44, it is possible to prevent compressed air from flowing out through the gap between the spray pipe 4 and the central shaft 3, resulting in poor sealing and pressure loss.

[0068] The working principle of this embodiment is basically the same as that of Embodiment 1, and will not be elaborated here.

[0069] Embodiment 4

[0070] This embodiment is basically the same as Embodiment 1 in structure.

[0071] The difference lies in that

[0072] The outer wall of the spray pipe 4 is sprayed with a heat-resistant material, such as a ceramic material, which is relatively heat-resistant and can prevent the spray pipe 4 from deforming.

[0073] The working principle of this embodiment is basically the same as that of Embodiment 1, and will not be elaborated here.

[0074] The preferred embodiments of the present patent have been described in detail above. However, the present patent is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the gist of the present patent. Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; as those skilled in the art, it is obvious to combine multiple technical solutions of the present invention. And these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A micro-mist dust suppression device for power plant coal conveying based on video surveillance, characterized in that: It includes a video monitoring system for detecting dust, a mobile spraying system for suppressing dust, and a control system; the control system is respectively connected to the video monitoring system and the mobile spraying system for control; the mobile spraying system includes a frame (1), a central shaft (3) fixedly connected to the frame (1), a traveling vehicle (2) slidably connected to the frame (1), a first driving device for driving the traveling vehicle (2) to slide along the frame (1), a spray pipe (4) rotatably connected to one end of the traveling vehicle (2), a second driving device (5) for driving the spray pipe (4) to rotate, and a water mist device communicated with the other end of the spray pipe (4), and the spray pipe (4) rotates around the central shaft (3) and can slide along the central shaft (3). The control system is respectively connected to the first driving device, the second driving device, and the water mist device by signals. The first driving device includes a rack (23) provided on the frame (1), a gear (22) meshed with the rack (23), and a first motor (21) fixedly connected to the traveling vehicle (2); the gear (22) is installed at the output end of the first motor (21). The second driving device (5) includes a first sprocket (51) fixedly connected to the spray pipe (4), a second motor fixedly connected to the traveling vehicle (2), a second sprocket (52) fixedly connected to the output end of the second motor, and a chain (53) provided between the first sprocket (51) and the second sprocket (52). A slideway (11) is provided on the frame (1), and rollers (24) are provided on the traveling vehicle (2); both sides of the traveling vehicle (2) slide along both sides of the slideway (11); the rollers (24) roll at the bottom of the slideway (11). The water mist device includes a water mist feeding assembly provided at one end of the spray pipe (4) close to the traveling vehicle (2), and a water mist generator (6) communicated with the water mist feeding assembly. The water mist feeding assembly includes an air inlet sleeve (48) fixedly connected to the traveling vehicle (2), an air inlet hole (45) provided on the air inlet sleeve (48), an air inlet valve (46) communicated with one end of the air inlet hole (45), an air inlet ring groove (43) provided on the outer wall of the spray pipe (4) and communicated with the other end of the air inlet hole (45), an air inlet groove (41) provided on the inner wall of the spray pipe (4), and a connection hole (42) for communicating the air inlet groove (41) and the air inlet ring groove (43); the air inlet groove (41) is arranged along the length direction of the spray pipe (4).

2. The micro-mist dust suppression device for power plant coal conveying based on video monitoring according to claim 1, characterized in that: Sealing rings (44) are provided on the air inlet sleeve (48) on both sides of the air inlet ring groove (43).

3. The micro mist dust suppression device for power plant coal conveying based on video monitoring according to claim 2, characterized in that: An air outlet hole (47) is provided at the end of the spray pipe (4) away from the traveling vehicle (2); the air outlet hole (47) is a tapered hole, and the air outlet hole (47) communicates with the air inlet groove (41).

4. The micro mist dust suppression device for power plant coal conveying based on video monitoring according to claim 3, characterized in that: The water mist generator (6) includes a compressed air gas source, a water tank (64), and a generator body; the generator body is a Venturi tube; the Venturi tube is provided with an air inlet pipe (61), an air outlet pipe (63), and a water inlet pipe (62); the compressed air gas source is communicated with the air inlet pipe (61); the air outlet pipe (63) is communicated with the intake valve (46); the water inlet pipe (62) is communicated with the water tank (64).

5. The micro-mist dust suppression device for power plant coal conveying based on video monitoring according to claim 4, characterized in that: The generator body includes an intermediate thin tube (65) for gas-liquid mixing, a reducing pipe (66) respectively communicated with both ends of the intermediate thin tube (65), and a thick pipe (67) respectively communicated with the reducing pipe (66); the thick pipe (67) at one end is communicated with the air inlet pipe (61); the thick pipe (67) at the other end is communicated with the air outlet pipe (63); the middle part of the intermediate thin tube (65) is communicated with the water inlet pipe (62).

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