Power plant and coal plant spraying device for large-scale thermal power generation

Abstract

The invention discloses a power plant and coal plant spraying device for large-scale thermal power generation, and belongs to the field of coal plant spraying, the power plant and coal plant spraying device comprises a support frame, a spraying pipe is arranged above the support frame, an atomizing nozzle is rotatably connected below the spraying pipe, and an impact nozzle is fixedly connected below the spraying pipe; a sliding part used for driving the spraying pipe to slide left and right is assembled on the outer surface of the spraying pipe, a fixing part used for locking the orientation of the spraying pipe is assembled on the inner surface of the sliding part, and adjusting parts used for unlocking the spraying pipe and pushing the spraying pipe to turn are arranged on the left side and the right side of the fixing part. Water flow sprayed by the impact nozzles on the spraying pipe impacts the collecting part to provide moving thrust, when the spraying pipe moves to the bottom, the adjusting part firstly relieves fixation of the spraying pipe by the fixing part and then pushes the spraying pipe to rotate to enable the impact nozzles to face the other side, so that the spraying pipe automatically turns when moving to the bottom, and the effect of facilitating automatic reciprocating spraying is achieved.

Description

Technical Field

[0001] This application relates to the field of coal plant spraying, and more specifically, to a spraying device for a coal plant in a large-scale thermal power plant. Background Art

[0002] Large-scale thermal power generation mainly relies on the coal in the coal yard as fuel. Through fuel combustion, water is turned into high-pressure steam, which drives the gas turbine to rotate, converting chemical energy into internal energy. Then, the gas turbine drives the generator to rotate and converts the internal energy into electrical energy to achieve power generation. The coal in the coal plant generally needs to be dust-removed and sprayed by a spraying device before it can be sent to the thermal power plant. The existing spraying devices for coal plants in large-scale thermal power plants adopt a spraying form with a gantry shape, so that the water mist sprays downward onto the coal to achieve the purpose of dust reduction.

[0003] However, in the prior art, the spraying mechanism is arranged at a high position, and the power for its movement requires an additional motor and corresponding power resources. If the water flow impact force is used as the power, it is not convenient to return after one round of spraying for reciprocating spraying, and it is not convenient to automatically and conveniently spray the lower part repeatedly. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a spraying device for a coal plant in a large-scale thermal power plant, which solves the problems raised in the above background art.

[0005] To achieve the above object, the present application provides a spraying device for a coal plant in a large-scale thermal power plant, including a support frame. A spraying pipe is arranged above the support frame. An atomizing nozzle is rotatably connected below the spraying pipe. An impact nozzle is fixedly connected below the spraying pipe. A sliding member for driving the spraying pipe to slide left and right is assembled on the outer surface of the spraying pipe. A fixing member for locking the orientation of the spraying pipe is assembled on the inner surface of the sliding member. Adjusting members for unlocking the spraying pipe and pushing the spraying pipe to turn are arranged on the left and right sides of the fixing member. A water storage member for supplying water is assembled behind the spraying pipe. A collecting member for increasing the thrust and recovering the water flow is arranged below the impact nozzle. A closing member for reducing the thrust when the sliding member slides to the bottom is assembled on the inner surface of the impact nozzle. A buffer member for buffering when the sliding member slides to the bottom is assembled on the outer surface of the sliding member. A guiding pipe is fixedly connected to the outer surface of the atomizing nozzle. A pushing plate is fixedly connected above the spraying pipe.

[0006] Preferably, the sliding member includes a connecting rod. A sliding seat is fixedly connected to the lower end of the connecting rod. The sliding seat is rotatably connected to the outer surface of the spraying pipe. A sliding rail is slidably connected below the sliding seat. The sliding rail is fixedly connected to the upper part of the support frame.

[0007] Preferably, the fixing member includes a fixing piece, the fixing piece is fixedly connected above the spray pipe, a ring body is fixedly connected to the front surface of the sliding seat, a first limiting block is fixedly connected above the ring body, a support piece is fixedly connected to the front surface of the sliding seat, a limiting rod penetrates and is slidably connected above the support piece, a second limiting block is fixedly connected to the lower end of the limiting rod, and a magnet block is fixedly connected to the upper end of the limiting rod.

[0008] Preferably, the adjusting member includes a first support rod, the first support rod is fixedly connected above the support frame, a top plate is fixedly connected to the upper end of the first support rod, a second support rod is fixedly connected above the support frame, and a magnetic plate is fixedly connected to the upper end of the second support rod.

[0009] Preferably, the water storage member includes a water storage tank, a water pump group is fixedly installed above the water storage tank, and a first hose is connected between the water pump group and the spray pipe through pipelines.

[0010] Preferably, the collecting member includes a collecting groove, the collecting groove is fixedly connected to the outer surface of the support frame, and a pipeline is connected between the collecting groove and the water storage tank through pipelines.

[0011] Preferably, the closing member includes a closing ring, the closing ring is fixedly connected to the inner surface of the impact nozzle, a closing block is arranged above the closing ring, a thin rod is fixedly connected above the closing block, the thin rod penetrates and is slidably connected above the spray pipe, and a limiting sleeve is slidably connected to the outer surface of the thin rod, and the limiting sleeve is fixedly connected above the spray pipe.

[0012] Preferably, the closing member further includes a sliding groove, the sliding groove is formed in the outer surface of the sliding seat, a sliding rod is slidably connected to the inner surface of the sliding groove, the sliding rod is fixedly connected to the upper part of the thin rod, a telescopic rod is fixedly connected to the lower part of the sliding rod, and the telescopic rod is fixedly connected above the spray pipe.

[0013] Preferably, the buffer member includes an air chamber, the air chamber is fixedly connected above the spray pipe, a piston head is slidably connected to the inner surface of the air chamber, a piston rod is fixedly connected above the piston head, the piston rod penetrates and is slidably connected above the air chamber, and the piston rod is fixedly connected to the lower part of the sliding rod.

[0014] Preferably, the buffer member further includes an elastic airbag, the elastic airbag is fixedly connected to the left and right sides of the sliding seat, a second hose is connected between the elastic airbag and the air chamber through pipelines, and a limiting seat is fixedly connected above the support frame.

[0015] The advantages of the present application are as follows: , in this application, the water flow ejected from the impact nozzles on the spray pipe impacts the collecting member to provide a moving thrust. When it moves to the end, the adjusting member will first release the fixing of the fixing member on the spray pipe, and then push the spray pipe to rotate so that the impact nozzles face the other side, thus automatically turning when it moves to the end, which has the function of facilitating automatic reciprocating spraying.

[0016] , during the rotation of the spray pipe in this application, it will drive the closing member to seal the inside of the impact nozzle, so that it loses the thrust, so that when the spray pipe rotates, only the inertia of the thrust of the impact nozzle exists and the impact nozzle itself does not provide thrust, which has the function of facilitating more stable turning.

[0017] , during the rotation of the spray pipe in this application, it will also drive the buffer member to bulge, so that the spray pipe plays a buffering role when it runs to one side to the end, preventing the inertia of the thrust of the impact nozzle from causing the spray pipe and the sliding member to collide, which has the purpose of facilitating the protection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings forming a part of this application are used to provide a further understanding of this application, making other features, purposes and advantages of this application more obvious. The schematic embodiments and descriptions of the drawings of this application are used to explain this application and do not constitute an improper limitation of this application. In the drawings: Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is the rear view of the overall structure of the present invention; Figure 3 is the bottom view of the overall structure of the present invention; Figure 4 is the partial structural schematic diagram of the present invention; Figure 5 is the right view of the partial structure of the present invention; Figure 6 is the partial structural cross-sectional view of the present invention; Figure 7 is of the present invention Figure 5 enlarged schematic diagram of the structure at A in; Figure 8 is of the present invention Figure 6 enlarged schematic diagram of the structure at B in.

[0019] In the above figures, 1, support frame; 2, spray pipe; 3, atomizing nozzle; 4, impact nozzle; 5, sliding member; 501, connecting rod; 502, sliding seat; 503, slide rail; 6, fixing member; 601, fixing plate; 602, ring body; 603, first limiting block; 604, support plate; 605, limiting rod; 606, second limiting block; 607, magnet block; 7, adjusting member; 701, first support rod; 702, top plate; 703, second support rod; 704, magnetic plate; 8, water storage member; 801, water storage tank; 802, water pump group; 803, first hose; 9, collection member; 901, collection trough; 902, pipeline; 10, sealing member; 101, sealing ring; 102, sealing block; 103, thin rod; 104, limiting sleeve; 105, sliding groove; 106, sliding rod; 107, telescopic rod; 11, buffer member; 111, air chamber; 112, piston head; 113, piston rod; 114, elastic airbag; 115, second hose; 116, limiting seat; 12, guiding pipe; 13, pushing plate. Detailed implementation manners

[0020] In order to enable those skilled in the art of the present technology to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the scope of protection of this application.

[0021] It should be noted that the terms "first", "second", etc. in the description and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so as to describe the embodiments of this application here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0022] In this application, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly used to better describe this application and its embodiments, and are not used to limit that the indicated devices, elements or components must have a specific orientation or be constructed and operated in a specific orientation.

[0023] Moreover, in addition to being used to indicate orientation or positional relationship, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0024] In addition, the terms "installed", "set", "provided with", "connected", "connected to", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there can be internal communication between two devices, components, or parts. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0025] It should be noted that, without conflict, the embodiments and features in the embodiments of this application can be combined with each other. The following will detail this application with reference to the drawings and in conjunction with the embodiments.

[0026] Example 1, see Figures 1-8, this embodiment provides a spraying device for a coal yard in a large-scale thermal power generation power plant, including a support frame 1. The support frame 1 includes a directional frame body and four support columns. Installation pieces and bolts are provided at the lower ends of the support columns for fixation. A spraying pipe 2 is arranged above the support frame 1. The spraying pipe 2 is specifically a rigid pipe body. A mist spray nozzle 3 is rotatably connected below the spraying pipe 2. The number of mist spray nozzles 3 is five, and the mist spray nozzle 3 can rotate below the spraying pipe 2. An impact spray nozzle 4 is fixedly connected below the spraying pipe 2. The number of impact spray nozzles 4 is two. The impact spray nozzle 4 is specifically a linear spray nozzle, which can spray high-speed water flow to impact the target surface. A sliding member 5 for driving the spraying pipe 2 to slide left and right is assembled on the outer surface of the spraying pipe 2. The sliding member 5 includes a connecting rod 501. The shape of the connecting rod 501 is U-shaped. A sliding seat 502 is fixedly connected to the lower end of the connecting rod 501. The sliding seat 502 is rotatably connected to the outer surface of the spraying pipe 2. A bearing is arranged between the sliding seat 502 and the spraying pipe 2. A slide rail 503 is slidably connected below the sliding seat 502. The number of the sliding seat 502 and the slide rail 503 is two. The slide rail 503 is fixedly connected to the upper part of the support frame 1. The cross-sectional shape of the slide rail 503 is T-shaped. A fixing member 6 for locking the orientation of the spraying pipe 2 is assembled on the inner surface of the sliding member 5. The fixing member 6 includes a fixing piece 601. The shape of the fixing piece 601 is L-shaped. The fixing piece 601 is fixedly connected to the upper part of the spraying pipe 2. A ring body 602 is fixedly connected to the front of the sliding seat 502. The shape of the ring body 602 is annular. The ring body 602 is arranged on the sliding seat 502 located at the rear. Two first limit blocks 603 are fixedly connected above the ring body 602. A support piece 604 is fixedly connected to the front of the sliding seat 502. A limiting rod 605 is penetrated and slidably connected above the support piece 604. A second limit block 606 is fixedly connected to the lower end of the limiting rod 605. A magnet block 607 is fixedly connected to the upper end of the limiting rod 605. The number of the support piece 604, the second limit block 606 and the magnet block 607 is two. Adjusting members 7 for releasing the locking of the spraying pipe 2 and pushing the spraying pipe 2 to turn are arranged on the left and right sides of the fixing member 6. The adjusting member 7 includes a first support rod 701. The first support rod 701 is fixedly connected to the upper part of the support frame 1. A top plate 702 is fixedly connected to the upper end of the first support rod 701. A second support rod 703 is fixedly connected to the upper part of the support frame 1. The first support rod 701 and the second support rod 703 are cylindrical. A magnetic plate 704 is fixedly connected to the upper end of the second support rod 703. The magnetic plate 704 can attract the magnet block 607. Both the magnetic plate 704 and the magnet block 607 are permanent magnets. A water storage member 8 for supplying water is assembled behind the spraying pipe 2. The water storage member 8 includes a water storage tank 801. An opening and a threaded rod are arranged above the water storage tank 801. A water pump group 802 is fixedly installed above the water storage tank 801. The water pump group 802 includes a water extraction pump and a booster pump, which are used to extract the water in the water storage tank 801 and transport it into the spraying pipe 2. A first hose 803 is connected by a pipeline between the water pump group 802 and the spraying pipe 2.A collecting member 9 for increasing thrust and recovering water flow is provided below the impact nozzle 4. The collecting member 9 includes a collecting groove 901. The inner surface of the groove body of the collecting groove 901 is provided with tooth-shaped protrusions. A distance is left between the tooth-shaped protrusions and the surface of the collecting groove 901 close to the support frame 1, so that the water flow on the tooth-shaped protrusions can be collected at the bottom of the inner surface of the collecting groove 901. The tooth-shaped protrusions are used to make the high-speed water flow ejected by the impact nozzle 4 impact the tooth-shaped protrusions in the collecting groove 901, thereby generating a thrust to push the spray pipe 2 to move. The collecting groove 901 is fixedly connected to the outer surface of the support frame 1. A pipeline 902 is connected between the collecting groove 901 and the water storage tank 801. The water in the collecting groove 901 will flow into the water storage tank 801 through the pipeline 902. A closing member 10 for reducing thrust when the sliding member 5 slides to the bottom is assembled on the inner surface of the impact nozzle 4. The number of the closing members 10 is two groups, which are symmetrically arranged before and after on the two impact nozzles 4 respectively. A buffer member 11 for buffering when the sliding member 5 slides to the bottom is assembled on the outer surface of the sliding member 5. A guide pipe 12 is fixedly connected to the outer surface of the atomizing nozzle 3. Three guide pipes 12 are provided on each atomizing nozzle 3. The guide pipe 12 is arc-shaped. The guide pipe 12 is communicated with the inner surface of the atomizing nozzle 3. The guide pipe 12 is used for when the atomizing nozzle 3 sprays water, it will also eject water flow through the guide pipe 12, so as to drive the atomizing nozzle 3 to rotate automatically when spraying water through the impact force of the water flow. A push plate 13 is fixedly connected above the spray pipe 2. The movement of the spray pipe 2 drives the push plate 13 to push against the top plate 702, thereby rotating the spray pipe 2.

[0027] When the above device is in specific use, first install the support frame 1 above the coal pile in the coal yard that needs to be sprayed for dust reduction. Then, start the water pump group 802 to pump the water in the water storage tank 801 and transport it to the spray pipe 2 through the first hose 803. The water transported to the spray pipe 2 will be sprayed out through the atomizing nozzles 3, thereby reducing the dust in the coal yard. When the atomizing nozzles 3 spray water, the guide pipes 12 on the surface of the atomizing nozzles 3 will also spray out water flows, so as to drive the atomizing nozzles 3 to rotate automatically when spraying water through the impact force of the water flows, facilitating uniform spraying. The water in the spray pipe 2 will also be sprayed out from the impact nozzles 4. When the water flow sprayed out from the impact nozzles 4 impacts the tooth-shaped protrusions in the collection tank 901, it will generate a thrust to push the spray pipe 2 to move leftward. The leftward movement of the spray pipe 2 will drive the sliding seat 502 to slide leftward on the slide rail 503. When the sliding seat 502 is about to reach the end of the leftward slide on the slide rail 503, the magnet block 607 on the left side of the sliding seat 502 will first move below the magnetic plate 704. At this time, the magnetic plate 704 will generate a suction force on the magnet block 607, thereby lifting the magnet block 607 upward. The upward movement of the magnet block 607 will drive the limit rod 605 to slide upward in the support piece 604, and the limit rod 605 will pull the second limit block 606 upward, so as to move away from the fixing piece 601. At this time, with the continuous leftward movement of the sliding seat 502, the push plate 13 on the spray pipe 2 will be pushed against the top plate 702, thereby pushing the spray pipe 2 to rotate clockwise. The clockwise rotation of the spray pipe 2 will drive the fixing piece 601 to swing rightward. During this process, the fixing piece 601 will push the second limit block 606 on the right side upward until it crosses the second limit block 606. At this time, the second limit block 606 will descend under the action of gravity, so as to cooperate with the first limit block 603 on the ring body 602 to fix the fixing piece 601, making the spray pipe 2 unable to rotate. At this time, the atomizing nozzles 3 and the impact nozzles 4 on the spray pipe 2 face leftward, facilitating the pushing of the spray pipe 2 to move rightward, so as to automatically turn and reciprocate when moving to one side to the end, facilitating automatic repeated spraying.

[0028] Embodiment 2, see Figures 2-8, the closure member 10 includes a closure ring 101. An inclined circular hole is provided on the inner wall of the closure ring 101. The closure ring 101 is fixedly connected to the inner surface of the impact nozzle 4. Above the closure ring 101, there is a closure block 102. The shape of the closure block 102 is frustum-shaped and is adapted to the inclined circular hole on the closure ring 101. A thin rod 103 is fixedly connected above the closure block 102. The material of the thin rod 103 is stainless steel. The thin rod 103 penetrates and is slidably connected to the upper part of the spray pipe 2. A limit sleeve 104 is slidably connected to the outer surface of the thin rod 103. The shape of the limit sleeve 104 is tubular, and the limit sleeve 104 is fixedly connected to the upper part of the spray pipe 2. The closure member 10 further includes a sliding groove 105. The sliding groove 105 specifically includes three arcs. The centers of the arcs are set at the rotation axis between the spray pipe 2 and the sliding seat 502. The radii of the arcs on both sides are higher than the radius of the middle arc. The sliding groove 105 is opened on the outer surface of the sliding seat 502. A sliding rod 106 is slidably connected to the inner surface of the sliding groove 105. The sliding rod 106 is fixedly connected to the upper part of the thin rod 103. A telescopic rod 107 is fixedly connected below the sliding rod 106. The telescopic rod 107 is fixedly connected to the upper part of the spray pipe 2.

[0029] When the above device is in specific use, when the push plate 13 presses against the top plate 702 to cause the spray pipe 2 to rotate clockwise in the sliding seat 502, it will also drive the telescopic rod 107 to make the sliding rod 106 slide to the right in the sliding groove 105. After the sliding rod 106 slides a short distance, it will be guided by the sliding groove 105. At this time, the radius of the arc movement of the sliding rod 106 decreases, and the sliding rod 106 will approach the spray pipe 2. At this time, the telescopic rod 107 will contract, and the sliding rod 106 will drive the thin rod 103 to slide downward in the limit sleeve 104. The thin rod 103 will drive the closure block 102 to descend, thereby blocking the closure ring 101, so that the impact nozzle 4 cannot spray water during the rotation of the spray pipe 2, facilitating stable rotation. When the sliding rod 106 slides to the right to the end in the sliding groove 105, the radius of the arc movement of the sliding rod 106 is restored. At this time, the sliding rod 106 will pull the thin rod 103 to pull the closure block 102 out of the closure ring 101, thereby restoring the water spraying function of the impact nozzle 4 after rotating in place.

[0030] Example three, see Figures 2-8, the buffer member 11 includes an air chamber 111, in which gas is provided. The air chamber 111 is fixedly connected above the spray pipe 2. A piston head 112 is slidably connected to the inner surface of the air chamber 111. A piston rod 113 is fixedly connected above the piston head 112. The piston rod 113 penetrates and is slidably connected to the upper part of the air chamber 111. A through hole for passing through the piston rod 113 is provided above the air chamber 111. The piston rod 113 is fixedly connected to the lower part of the sliding rod 106. The buffer member 11 further includes two elastic air bags 114, which are respectively arranged on the left and right sides of the sliding seat 502. The elastic air bags 114 are fixedly connected to the left and right sides of the sliding seat 502. A second hose 115 is connected by a pipeline between the elastic air bag 114 and the air chamber 111. The elastic air bag 114 is communicated with the air chamber 111 through the second hose 115. A limit seat 116 is fixedly connected above the support frame 1. The limit seat 116 is arranged on the left and right sides of the slide rail 503.

[0031] When the above-mentioned device is in specific use, when the spray pipe 2 rotates and the sliding rod 106 approaches the spray pipe 2, it will also drive the piston rod 113 to move downward. The piston rod 113 will push the piston head 112 to move downward in the air chamber 111. The piston head 112 will push the gas in the air chamber 111 to be injected into the elastic air bag 114 through the second hose 115. The elastic air bag 114 will expand. At this time, the sliding seat 502 is about to slide to the left end on the slide rail 503. When the sliding seat 502 slides to the left end due to its sliding inertia, the elastic air bag 114 on the sliding seat 502 will contact the limit seat 116. The elastic air bag 114 will buffer the impact force between the sliding seat 502 and the limit seat 116, thus playing a protective role for the overall facility.

[0032] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered by the protection scope of the present invention.

Claims

1. A spray device for a coal yard in a power plant for large-scale thermal power generation, comprising a support frame, a spray pipe is arranged above the support frame, an atomizing nozzle is rotatably connected below the spray pipe, and an impact nozzle is fixedly connected below the spray pipe, characterized in that, A sliding member for driving the spray pipe to slide left and right is assembled on the outer surface of the spray pipe. A fixing member for locking the orientation of the spray pipe is assembled on the inner surface of the sliding member. Adjusting members for unlocking the spray pipe and pushing the spray pipe to turn are arranged on both the left and right sides of the fixing member. A water storage member for supplying water is assembled behind the spray pipe. A collecting member for increasing the thrust and recovering the water flow is arranged below the impact nozzle. A closing member for reducing the thrust when the sliding member slides to the end is assembled on the inner surface of the impact nozzle. A buffer member for buffering when the sliding member slides to the end is assembled on the outer surface of the sliding member. A guiding pipe is fixedly connected to the outer surface of the atomizing nozzle. A pushing plate is fixedly connected above the spray pipe.

2. The spray device for a coal yard of a large-scale thermal power generation power plant according to claim 1, characterized in that, The sliding member includes a connecting rod. A sliding seat is fixedly connected to the lower end of the connecting rod. The sliding seat is rotatably connected to the outer surface of the spray pipe. A slide rail is slidably connected below the sliding seat. The slide rail is fixedly connected to the upper part of the support frame.

3. The spray device for a coal yard of a large-scale thermal power generation power plant according to claim 2, characterized in that, The fixing member includes a fixing plate. The fixing plate is fixedly connected to the upper part of the spray pipe. A ring body is fixedly connected to the front of the sliding seat. A first limiting block is fixedly connected above the ring body. A support plate is fixedly connected to the front of the sliding seat. A limiting rod is inserted through and slidably connected above the support plate. A second limiting block is fixedly connected to the lower end of the limiting rod. A magnet block is fixedly connected to the upper end of the limiting rod.

4. A coal yard spraying device for a large-scale thermal power generation power plant according to claim 1, characterized in that, The adjusting member includes a first support rod. The first support rod is fixedly connected to the upper part of the support frame. A top plate is fixedly connected to the upper end of the first support rod. A second support rod is fixedly connected to the upper part of the support frame. A magnetic plate is fixedly connected to the upper end of the second support rod.

5. The spray device for a coal yard of a large-scale thermal power generation power plant according to claim 1, characterized in that, The water storage member includes a water storage tank. A water pump group is fixedly installed above the water storage tank. A first hose is connected by pipeline between the water pump group and the spray pipe.

6. The spray device for a coal yard of a power plant for large-scale thermal power generation according to claim 5, characterized in that, The collecting member includes a collecting groove. The collecting groove is fixedly connected to the outer surface of the support frame. A pipeline is connected by pipeline between the collecting groove and the water storage tank.

7. A coal yard spraying device for a large-scale thermal power generation power plant according to claim 1, characterized in that, The closing member includes a closing ring. The closing ring is fixedly connected to the inner surface of the impact nozzle. A closing block is arranged above the closing ring. A thin rod is fixedly connected to the upper part of the closing block. The thin rod is inserted through and slidably connected to the upper part of the spray pipe. A limiting sleeve is slidably connected to the outer surface of the thin rod. The limiting sleeve is fixedly connected to the upper part of the spray pipe.

8. A coal yard spraying device for a large-scale thermal power generation power plant according to claim 7, characterized in that, The closing member further includes a sliding groove. The sliding groove is formed on the outer surface of the sliding seat. A sliding rod is slidably connected to the inner surface of the sliding groove. The sliding rod is fixedly connected to the upper part of the thin rod. A telescopic rod is fixedly connected to the lower part of the sliding rod. The telescopic rod is fixedly connected to the upper part of the spray pipe.

9. The spray device for a coal yard of a large-scale thermal power generation power plant according to claim 8, characterized in that, The buffer member includes an air chamber. The air chamber is fixedly connected to the upper part of the spray pipe. A piston head is slidably connected to the inner surface of the air chamber. A piston rod is fixedly connected to the upper part of the piston head. The piston rod is inserted through and slidably connected to the upper part of the air chamber. The piston rod is fixedly connected to the lower part of the sliding rod.

10. A coal yard spraying device for a large-scale thermal power generation power plant according to claim 9, characterized in that, The buffer member further includes an elastic air bag. The elastic air bag is fixedly connected to both the left and right sides of the sliding seat. A second hose is connected by pipeline between the elastic air bag and the air chamber. A limiting seat is fixedly connected to the upper part of the support frame.

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