A sampling device for slag analysis of a thermal power plant

Abstract

The utility model relates to sampling equipment technical field discloses a kind of sampling device for slag analysis for thermal power plant, including box, sampling assembly, driving motor and sample box, sample box is set in box;Sampling assembly includes cover plate and sampling head sliding assembly with cover plate along horizontal direction, cover plate is fixedly arranged at the top of box, sampling head has the collection state of moving to the outside of box to collect sample and the transfer state of moving to the inside of box to transfer sample to sample box in sliding stroke;Driving motor is fixedly connected with box, driving motor is drivingly connected with sampling head to drive sampling head reciprocating movement between collection state and transfer state.Driving motor can obtain furnace slag sample when driving sampling head to move to collection state, sampling head can be transferred to sample box after moving to transfer state furnace slag sample, while realizing the automatic collection and storage of sample, without manual sampling and sample transfer, avoid to produce security risk.

Description

Technical Field

[0001] This utility model relates to the field of sampling equipment technology, and in particular to a sampling device for slag analysis in thermal power plants. Background Technology

[0002] Thermal power plants use combustibles (such as coal, oil, and natural gas) as fuel to produce electricity. During combustion, these combustibles generate a large amount of waste residue. The slag discharge from thermal power plants mainly refers to the waste residue produced in coal-fired power plants. This waste residue primarily includes ash, coal slag, and residual oil, with ash being the most significant. This waste residue is the residue left after coal combustion in thermal power plants, industrial and domestic boilers, and other equipment; it is also known as furnace slag.

[0003] Sampling of waste residue is necessary before discharge to test it and determine whether the waste residue emitted by the power plant meets emission standards. This is crucial for optimizing the combustion process, improving resource utilization, meeting environmental protection requirements, and enhancing economic efficiency. Sampling devices are required for ash discharge analysis. Patent CN212363679 U discloses a sampling device for ash discharge analysis in thermal power plants. By fixing a collection bottle in a collection box using a threaded structure and adjusting the position of the collection bottle using a rotating placement plate, it is convenient to collect waste residue from multiple areas and to easily locate and test it, reducing limitations.

[0004] However, the aforementioned sampling device only serves to store waste residue samples and requires a separate slag-removing device to collect the samples. Most existing slag-removing devices are tools such as tongs or shovels, which are inconvenient and pose certain safety hazards when workers use them to sample the high-temperature slag. Utility Model Content

[0005] The purpose of this invention is to provide a sampling device for slag analysis in thermal power plants, so as to solve the problem of safety hazards in manual sampling of existing sampling devices.

[0006] To achieve the above objectives, this utility model provides a sampling device for slag discharge analysis in thermal power plants, comprising a housing, a sampling component, a drive motor, and a sample box, wherein the sample box is disposed inside the housing, and the sampling component is arranged on the top of the housing; The sampling assembly includes a cover plate and a sampling head that is slidably mounted to the cover plate in a horizontal direction. The cover plate is fixedly disposed on the top of the box. The sampling head has a collection state that moves to the outside of the box to collect samples and a transfer state that moves into the box to transfer samples into the sample box during the sliding stroke. The drive motor is fixedly connected to the housing, and the drive motor is driven to the sampling head to drive the sampling head to reciprocate between the acquisition state and the transfer state.

[0007] Optionally, the sampling head includes a sliding frame, a mounting frame, and a sampling spoon. The sliding frame is connected to the drive motor and slides horizontally with the cover plate. The mounting frame is fixedly installed at the bottom of the sliding frame, and the sampling spoon is arranged at the bottom of the mounting frame.

[0008] Optionally, there are two sampling spoons with their openings facing each other. A sampling block is fixed to the top of each sampling spoon. The sliding frame is provided with a sliding groove, and both sampling blocks are slidably assembled into the sliding groove. The sampling head also includes a driving unit, which is connected to the two sampling blocks to drive the two sampling blocks to move closer or further apart along the slide.

[0009] Optionally, the driving unit includes an electric telescopic rod fixedly connected to the sliding frame and a moving block pulsatingly connected to the electric telescopic rod. The electric telescopic rod can drive the moving block to move vertically. The two sampling blocks are provided with slots on their sides that are close to each other. The tops of the slots on the two sampling blocks are far apart from each other. The moving block is also provided with a locking block. The locking block is slidably assembled in the slot. The locking block and the slot are stopped and engaged in a horizontal direction.

[0010] Optionally, the cross-section of the card block along the direction perpendicular to the card slot is trapezoidal.

[0011] Optionally, the sampling blocks are provided with a first inclined surface on the side that is close to each other. The angle between the first inclined surface and the vertical surface is equal to the angle between the slot and the vertical surface. The moving block has a second inclined surface that is adapted to fit the first inclined surface.

[0012] Optionally, a lead screw is rotatably mounted inside the cover plate, the drive motor is connected to the lead screw in a transmission connection, and the sliding frame has a threaded hole that is threaded to engage with the lead screw. The cover plate is also provided with a limiting slide rod, the sliding frame has a limiting hole, the limiting slide rod passes through the limiting hole, and the limiting slide rod is arranged parallel to and spaced apart from the lead screw.

[0013] Optionally, a gear transmission assembly is provided between the output end of the drive motor and the lead screw.

[0014] Optionally, the housing is provided with a clearance opening on the moving path of the sampling head, and an isolation plate is rotatably mounted on the housing, the isolation plate covering the clearance opening, and a torsion spring is connected between the isolation plate and the housing, the torsion spring being used to drive the isolation plate to return to being flush with the housing.

[0015] Optionally, there are multiple sample boxes, and each sample box is spaced apart along the moving direction of the sampling head.

[0016] Compared with the prior art, the sampling device for slag analysis in thermal power plants according to this utility model has the following advantages: the drive motor can drive the sampling head to slide inside the cover plate. When the sampling head moves to the collection state outside the box, it can obtain slag samples. Then, the drive motor drives the sampling head to the transfer state inside the box, which can transfer the collected slag samples into the sample box. At the same time, it realizes the automatic collection and storage of samples, eliminating the need for manual sampling and transfer, and avoiding safety hazards. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the sampling device for slag analysis in thermal power plants according to the present invention. Figure 2 yes Figure 1 A schematic diagram of the assembly of the sampling components and drive motor of a sampling device for slag analysis in thermal power plants. Figure 3 yes Figure 2 A schematic diagram of the sampling head of the sampling component; Figure 4 yes Figure 3 A cross-sectional view of the sampling head; Figure 5 yes Figure 1 A schematic diagram of the structure of a sampling device for slag analysis in thermal power plants.

[0018] In the diagram, 1. Box body, 11. Clearance opening, 2. Sampling component, 21. Cover plate, 22. Limiting slide bar, 23. Sliding frame, 24. Mounting frame, 25. Slide groove, 26. Sampling block, 261. Slot, 262. First inclined surface, 27. Sampling spoon, 28. Moving block, 281. Locking block, 282. Second inclined surface, 29. Electric telescopic rod, 3. Lead screw, 4. Drive motor, 5. Isolation plate, 6. Torsion spring, 7. Door panel, 8. Sample box. Detailed Implementation

[0019] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0020] A preferred embodiment of the sampling device for slag analysis in thermal power plants according to this utility model is as follows: Figures 1 to 5 As shown, the sampling device for slag analysis in thermal power plants includes a housing 1, a sampling component 2, a drive motor 4, and a sample box 8. The housing 1 is the main structure of the sampling device. The sampling component 2 is used to collect and transfer slag samples. The drive motor 4 is used to drive the sampling component 2 to move. The sample box 8 is used to store slag samples.

[0021] The housing 1 has a cubic structure with an internal cavity, where the sample box 8 is located. A door panel 7 is rotatably mounted on the front of the housing 1. Opening the door panel 7 allows the sample box 8 to be removed for testing the slag sample inside. Rollers are also fixedly connected to the bottom of the housing 1, positioned at the four corners for easy movement and transfer by the operator.

[0022] The sampling assembly 2 includes a cover plate 21 and a sampling head. The cover plate 21 is fixedly installed on the top of the housing 1. The top of the housing 1 has an open structure to facilitate the transfer of slag samples from the sampling head into the sample box 8. The cover plate 21 is arranged on the top of the housing 1 to relatively seal the housing 1, and also provides assembly space for the sampling head. In this embodiment, the cover plate 21 also has a slot in the middle, which runs vertically through the cover plate 21, allowing the operator to observe and determine the position of the sampling head.

[0023] The sampling head is slidably mounted inside the cover plate 21 in the horizontal direction. The length of the cover plate 21 is greater than the length of the housing 1, so that part of the cover plate 21 is located on the outside of the housing 1. During the sliding stroke, when the sampling head moves to the outside of the housing 1, the sampling head can collect slag samples, and at this time the sampling head is in the collecting state; when the sampling head moves into the housing 1, the sampling head can transfer the slag samples into the sample box 8, and at this time the sampling head is in the transferring state.

[0024] The drive motor 4 is fixedly connected to the housing 1 and is also connected to the sampling head via a transmission connection. The drive motor 4 can drive the sampling head to reciprocate between the sampling state and the transfer state, thereby changing the state of the sampling head and enabling multiple samplings. Through the cooperation of the drive motor 4 and the sampling head, automatic sampling can be achieved, eliminating the need for manual sampling.

[0025] The drive motor 4 of the sampling device for slag analysis in thermal power plants can drive the sampling head to slide inside the cover plate 21. When the sampling head moves to the collection state outside the box 1, it can obtain slag samples. Then, the drive motor 4 drives the sampling head to the transfer state inside the box 1, which can transfer the collected slag samples into the sample box 8. At the same time, it realizes the automatic collection and storage of samples, eliminating the need for manual sampling and transfer, and avoiding safety hazards.

[0026] In some embodiments, the sampling head includes a sliding frame 23, a mounting frame 24, and a sampling spoon 27. The sliding frame 23 is connected to the drive motor 4 and slides in a horizontal direction with the cover plate 21. The mounting frame 24 is fixedly installed at the bottom of the sliding frame 23, and the sampling spoon 27 is arranged at the bottom of the mounting frame 24.

[0027] The sliding frame 23 is horizontally mounted inside the cover plate 21. The mounting frame 24 is used to mount the sampling spoon 27. The sliding frame 23 works in conjunction with the cover plate 21 and the drive motor 4 to achieve horizontal movement of the sampling head. When the sliding frame 23 slides, it can drive the mounting frame 24 and the sampling spoon 27 to move synchronously, so that the sampling spoon 27 can collect the sample and transfer the sample into the sample box 8. When the sliding frame 23 moves, the sampling spoon 27 at the bottom of the mounting frame 24 can partially extend into the slag to obtain the sample.

[0028] In some embodiments, there are two sampling spoons 27, with the openings of the two sampling spoons 27 arranged opposite each other. A sampling block 26 is fixed to the top of each sampling spoon 27. The sliding frame 23 is provided with a sliding groove 25, and the two sampling blocks 26 are slidably assembled in the sliding groove 25. The sampling head also includes a driving unit, which is connected to the two sampling blocks 26 in a transmission manner to drive the two sampling blocks 26 to move closer or further away from each other along the sliding groove 25.

[0029] The two sampling spoons 27 are positioned opposite each other, and can be in two states: closed and open. When the two sampling blocks 26 are driven by the drive unit to slide closer together within the slide groove 25, the two sampling blocks 26 cause the two sampling spoons 27 to close, at which point the slag sample is fixed between the two sampling spoons 27, and the sampling head is in the collection state. When the two sampling blocks 26 are driven by the drive unit to slide further apart within the slide groove 25, the two sampling spoons 27 separate, and the sample can fall into the sample box 8 under the action of gravity, realizing the transfer and storage of the sample. The slide groove 25 guides the movement of the sampling blocks 26, ensuring that the two sampling blocks 26 always move in a straight line, thus ensuring the stability of the movement of the sampling blocks 26.

[0030] In this embodiment, the sampling block 26, the sampling spoon 27, and the mounting bracket 24 are all made of high-temperature resistant material to facilitate the collection of high-temperature slag samples.

[0031] In some embodiments, the drive unit includes an electric telescopic rod 29 fixedly connected to the sliding frame 23 and a moving block 28 pulsatingly connected to the electric telescopic rod 29. The electric telescopic rod 29 can drive the moving block 28 to move vertically. The two sampling blocks 26 are respectively provided with slots 261 on their sides that are close to each other. The tops of the slots 261 on the two sampling blocks 26 are far apart from each other. The moving block 28 is also provided with a locking block 281. The locking block 281 is slidably assembled in the slot 261. The locking block 281 and the slot 261 stop and cooperate in the horizontal direction.

[0032] The electric telescopic rod 29 can drive the moving block 28 to move vertically. Since the locking block 281 of the moving block 28 slides and stops horizontally with the slot 261 of the sampling block 26, the locking block 281 will not disengage from the slot 261 when the moving block 28 moves vertically, and can move within the slot 261. The tops of the slots 261 on the other two sampling blocks 26 are far apart, and the slots 261 are generally inclined. When the locking block 281 moves within the slot 261, it applies horizontal separation to the sampling block 26, which can drive the sliding block to move horizontally.

[0033] When the electric telescopic rod 29 drives the moving block 28 to move downward, the locking block 281 applies a force to the two sampling blocks 26 through the locking groove 261, causing the two sampling blocks 26 to slide in the sliding groove 25 and move away from each other, and the two sampling spoons 27 to separate from each other; when the electric telescopic rod 29 drives the moving block 28 to move upward, the locking block 281 applies a force to the two sampling blocks 26 through the locking groove 261, causing the two sampling blocks 26 to slide in the sliding groove 25 and move closer to each other, and the two sampling spoons 27 to close.

[0034] The electric telescopic rod 29 and the moving block 28 form a drive unit. The inclined slots 261 and the blocks 281 can ensure that the two sampling blocks 26 move synchronously, which simplifies the structure of the drive unit, makes it easy to control the movement of the two sampling spoons 27 at the same time, and is convenient to use.

[0035] In some embodiments, the cross-section of the card block 281 along the direction perpendicular to the card slot 261 is trapezoidal.

[0036] The cross-section of the locking block 281 is trapezoidal, and the opening size of the slot 261 is smaller than the bottom size. The locking block 281 and the slot 261 are compatible, ensuring that the locking block 281 will not separate from the sampling block 26 in a direction perpendicular to the slot 261 when the moving block 28 moves vertically. This achieves a stop-locking fit between the locking block 281 and the slot 261 in the horizontal direction. In other embodiments, the cross-sections of the locking block 281 and the slot 261 can also be spherical, etc.

[0037] In some embodiments, the sampling blocks 26 are provided with a first inclined surface 262 on the side that is close to each other. The angle between the first inclined surface 262 and the vertical surface is equal to the angle between the slot 261 and the vertical surface. The moving block 28 has a second inclined surface 282 that is adapted to fit the first inclined surface 262.

[0038] The first inclined surface 262 of the sampling block 26 and the second inclined surface 282 of the moving block 28 are adapted to each other, and both sampling blocks 26 are trapezoidal. The angle between the first inclined surface 262 and the vertical plane is equal to the angle between the slot 261 and the vertical plane, that is, the inclination angle of the first inclined surface 262 and the second inclined surface 282 is equal to the inclination angle of the slot 261. When the moving block 28 moves in the vertical direction, the first inclined surface 262 and the second inclined surface 282 can always maintain contact. The first inclined surface 262 and the second inclined surface 282 have a guiding effect, which can ensure that the sampling block 26 moves smoothly in the horizontal direction.

[0039] In some embodiments, a lead screw 3 is rotatably mounted inside the cover plate 21, and a drive motor 4 is connected to the lead screw 3 for transmission. The sliding frame 23 has a threaded hole that is threadedly engaged with the lead screw 3. A limiting slide rod 22 is also provided inside the cover plate 21. The sliding frame 23 has a limiting hole, and the limiting slide rod 22 passes through the limiting hole. The limiting slide rod 22 is arranged parallel to and spaced apart from the lead screw 3.

[0040] The sliding frame 23 is threadedly engaged with the lead screw 3 through a threaded hole. The drive motor 4 is connected to the lead screw 3, and the output end of the drive motor 4 can drive the lead screw 3 to rotate. Under the action of the threaded structure, the sliding frame 23 can move along the lead screw 3. At the same time, since the limiting slide rod 22 is set parallel and spaced apart from the lead screw 3, and the limiting slide rod 22 passes through the limiting hole on the sliding frame 23, the limiting slide rod 22 restricts the sliding frame 23 from rotating around the lead screw 3, and can only move along the axial direction of the limiting slide rod 22.

[0041] In some embodiments, a gear transmission assembly is provided between the output end of the drive motor 4 and the lead screw 3.

[0042] The drive motor 4 and the lead screw 3 are connected by a gear transmission assembly. By controlling the number of rotations of the output end of the drive motor 4, the number of rotations of the lead screw 3 and the moving distance of the sliding frame 23 can be changed, thereby adjusting the positions of the sampling block 26 and the sampling spoon 27. In this embodiment, the gear transmission assembly includes two meshing helical gears, which are respectively fixedly mounted on the output end of the drive motor 4 and the end of the lead screw 3.

[0043] In some embodiments, the housing 1 is provided with a clearance opening 11 on the moving path of the sampling head, and an isolation plate 5 is rotatably mounted on the housing 1. The isolation plate 5 covers the clearance opening 11, and a torsion spring 6 is connected between the isolation plate 5 and the housing 1. The torsion spring 6 is used to drive the isolation plate 5 to return to being flush with the housing 1.

[0044] An clearance opening 11 is provided on the housing 1. An isolation plate 5 is rotated and assembled at the clearance opening 11, and a torsion spring 6 is provided to provide elastic restoring force for the isolation plate 5. When the sampling head moves horizontally back and forth within the cover plate 21 to the clearance opening 11, it can overcome the elastic force of the torsion spring 6 and push the isolation plate 5 open to achieve sample collection. When the sample collection is completed, the isolation plate 5 returns to the level with the housing 1 under the elastic force of the torsion spring 6. At this time, the isolation plate 5 can prevent slag from entering the interior of the housing 1 and has a protective effect on the sample stored in the sample box 8.

[0045] In some embodiments, there are multiple sample boxes 8, and each sample box 8 is spaced apart along the moving direction of the sampling head.

[0046] Multiple sample boxes 8 are spaced apart along the moving direction of the sampling head. Each sample box 8 can classify different slag samples, enabling classified sampling. By controlling the number of rotations of the drive motor 4, the sampling head can be positioned above different sample boxes 8, allowing different types of slag to be placed into different sample boxes 8. In this embodiment, there are five sample boxes 8 in total.

[0047] The working process of this utility model is as follows: Step 1: When in use, the operator pushes the box 1 to the side of the slag pile. The rotation of the output end of the drive motor 4 drives the rotation of the lead screw 3, which in turn causes the sliding frame 23 to move closer to the slag. During the process of moving closer, the sampling spoon 27 will gradually penetrate into the slag. At this time, the retraction of the output end of the electric telescopic rod 29 drives the moving block 28 to move upward. Then, the moving block 28 drives the two sampling blocks 26 to move closer to each other in the slide 25, so that the sampling spoon 27 wraps the slag on the opposite side. Step 2: By reversing the drive motor 4, the sliding frame 23 is moved into the housing 1. During the movement, the sliding frame 23 pushes open the isolation plate 5 and slides above a sample box 8. At this time, the extension of the output end of the electric telescopic rod 29 drives the two sampling blocks 26 to move away from each other in the slide groove 25. The two sampling spoons 27 separate and put down the internal sample, so that the sample falls into the sample box 8 at the bottom to complete the collection. When sampling from multiple slag locations, it is only necessary to adjust the rotation time of the drive motor 4 so that the slag falls into different sample boxes 8 to complete the classification sampling.

[0048] In summary, this utility model embodiment provides a sampling device for slag analysis in thermal power plants. Its drive motor can drive the sampling head to slide inside the cover plate. When the sampling head moves to the collection state outside the box, it can obtain slag samples. Then, the drive motor drives the sampling head to the transfer state inside the box, which can transfer the collected slag samples into the sample box. At the same time, it realizes the automatic collection and storage of samples, eliminating the need for manual sampling and transfer, and avoiding safety hazards.

[0049] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A sampling device for ash discharge analysis in thermal power plants, characterized in that, It includes a housing (1), a sampling component (2), a drive motor (4), and a sample box (8), wherein the sample box (8) is disposed inside the housing (1), and the sampling component (2) is arranged on the top of the housing (1); The sampling assembly (2) includes a cover plate (21) and a sampling head that is slidably assembled with the cover plate (21) in the horizontal direction. The cover plate (21) is fixedly disposed on the top of the box (1). The sampling head has a collection state in which it moves to the outside of the box (1) to collect samples and a transfer state in which it moves to the inside of the box (1) to transfer the samples to the sample box (8) during the sliding stroke. The drive motor (4) is fixedly connected to the housing (1), and the drive motor (4) is connected to the sampling head to drive the sampling head to move back and forth between the collection state and the transfer state.

2. The sampling device for ash discharge analysis in thermal power plants according to claim 1, characterized in that, The sampling head includes a sliding frame (23), a mounting frame (24), and a sampling spoon (27). The sliding frame (23) is connected to the drive motor (4) and slides in a horizontal direction with the cover plate (21). The mounting frame (24) is fixedly installed at the bottom of the sliding frame (23), and the sampling spoon (27) is arranged at the bottom of the mounting frame (24).

3. The sampling device for ash discharge analysis in thermal power plants according to claim 2, characterized in that, There are two sampling spoons (27), with the openings of the two sampling spoons (27) facing each other. A sampling block (26) is fixed to the top of each sampling spoon (27). The sliding frame (23) is provided with a sliding groove (25), and the two sampling blocks (26) are slidably assembled in the sliding groove (25). The sampling head also includes a driving unit, which is connected to the two sampling blocks (26) to drive the two sampling blocks (26) to move closer to or further away from each other along the groove (25).

4. The sampling device for ash discharge analysis in thermal power plants according to claim 3, characterized in that, The drive unit includes an electric telescopic rod (29) fixedly connected to the sliding frame (23) and a moving block (28) pulsatingly connected to the electric telescopic rod (29). The electric telescopic rod (29) can drive the moving block (28) to move vertically. The two sampling blocks (26) are provided with slots (261) on their sides that are close to each other. The tops of the slots (261) on the two sampling blocks (26) are far apart from each other. The moving block (28) is also provided with a locking block (281). The locking block (281) is slidably assembled in the slot (261). The locking block (281) and the slot (261) stop and cooperate in the horizontal direction.

5. The sampling device for ash discharge analysis in thermal power plants according to claim 4, characterized in that, The cross-section of the card block (281) in the direction perpendicular to the card slot (261) is trapezoidal.

6. The sampling device for ash discharge analysis in thermal power plants according to claim 4, characterized in that, The sampling blocks (26) are provided with a first inclined surface (262) on the side that is close to each other. The angle between the first inclined surface (262) and the vertical surface is equal to the angle between the slot (261) and the vertical surface. The moving block (28) has a second inclined surface (282) that is adapted to fit the first inclined surface (262).

7. The sampling device for ash discharge analysis in thermal power plants according to claim 2, characterized in that, The cover plate (21) is rotatably fitted with a lead screw (3), the drive motor (4) is connected to the lead screw (3) for transmission, and the sliding frame (23) has a threaded hole that is threaded to the lead screw (3); The cover plate (21) is also provided with a limiting slide rod (22), the sliding frame (23) has a limiting hole, the limiting slide rod (22) passes through the limiting hole, and the limiting slide rod (22) is arranged parallel to the lead screw (3) at intervals.

8. The sampling device for ash discharge analysis in thermal power plants according to claim 7, characterized in that, A gear transmission assembly is provided between the output end of the drive motor (4) and the lead screw (3).

9. The sampling device for ash discharge analysis in thermal power plants according to any one of claims 1-7, characterized in that, The housing (1) has an avoidance opening (11) on the moving path of the sampling head. An isolation plate (5) is also rotatably mounted on the housing (1). The isolation plate (5) covers the avoidance opening (11). A torsion spring (6) is also connected between the isolation plate (5) and the housing (1). The torsion spring (6) is used to drive the isolation plate (5) to return to being flush with the housing (1).

10. The sampling device for ash discharge analysis in thermal power plants according to any one of claims 1-7, characterized in that, There are multiple sample boxes (8), and each sample box (8) is spaced apart along the moving direction of the sampling head.

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