A boiler sampling device for a coal-fired unit of a thermal power plant

Abstract

The utility model provides a kind of coal-fired unit boiler sampling device of thermal power plant, including small positive and negative rotation motor, small positive and negative rotation motor outside is equipped with protective shell, small positive and negative rotation motor shaft end is equipped with ball screw, ball screw right end is rotatably installed in bearing seat, ball screw outside left end is equipped with nut cylinder by screw principle, nut cylinder lower end is vertically fixed with connecting rod, connecting rod right end is horizontally fixed with sampling rod, bearing seat lower end is vertically fixed with extension rod, sampling rod slides through extension rod, sampling rod right end is fixed with inner screw cylinder, outer screw block is screwed in inner screw cylinder by screw principle, the design solves the problem that the existing sampling device is mostly fixed structure when using, cumbersome to use, inconvenient for sampler to carry shift and fast sampling operation, the utility model uses a kind of portable cylindrical sampling structure, it is convenient for sampler to carry shift and fast sampling operation.

Description

Technical Field

[0001] This utility model relates to a sampling device for boilers in coal-fired power plants, belonging to the technical field of sampling equipment. Background Technology

[0002] Coal-fired boilers still occupy an important position in the power generation industry. In order to understand the combustion situation and economic efficiency of coal-fired boilers, it is necessary to conduct efficiency tests on the boilers and understand their operation. It is also necessary to sample fly ash and other materials, analyze the combustibles, and calculate the boiler efficiency to provide a reliable basis for the scientific calculation of boiler thermal efficiency.

[0003] However, most existing sampling devices are fixed structures, which are cumbersome to use and inconvenient for sampling personnel to carry, transfer, and quickly sample. There is an urgent need for a sampling device for coal-fired boiler units in thermal power plants to solve the above problems. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a sampling device for boilers of coal-fired power plants to solve the problems mentioned in the background technology. This utility model adopts a portable cylindrical sampling structure, which is convenient for sampling personnel to carry and transfer and to carry out rapid sampling operations.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sampling device for a coal-fired power plant boiler, comprising a small reversible motor, a protective shell covering the motor, a ball screw mounted on the motor shaft, the right end of the ball screw rotatably mounted in a bearing housing, a nut sleeve threaded onto the left end of the ball screw, a connecting rod longitudinally fixed to the lower end of the nut sleeve, a sampling rod horizontally fixed to the right end of the connecting rod, an extension rod longitudinally fixed to the lower end of the bearing housing, the sampling rod slidingly passing through the extension rod, an inner screw cylinder fixed to the right end of the sampling rod, an outer screw block screwed into the inner screw cylinder, a spring limit frame fixed to the right end of the outer screw block, a spring fixed to the left end of the spring limit frame, a stepped push rod connected to the right end of the spring, a sampling cylinder horizontally welded to the right end of the spring limit frame, and a movable push block slidably disposed inside the sampling cylinder.

[0006] Furthermore, a power plug is installed at the rear end of the small forward and reverse motor.

[0007] Furthermore, an anti-deviation limiting plate is longitudinally fixed at the upper end of the bearing seat, and an anti-deviation limiting rod is horizontally fixed at the left end of the anti-deviation limiting plate. The left end of the anti-deviation limiting rod is fixed to the protective shell.

[0008] Furthermore, the right end of the step push rod passes through the sampling tube and is connected to the movable push block.

[0009] Furthermore, a lifting handle is installed at the lower end of the protective shell.

[0010] Furthermore, the outside of the lifting handle is woven with a non-slip fabric sheet.

[0011] The beneficial effects of this utility model are as follows: This utility model provides a sampling device for boilers in coal-fired power plants. Because it incorporates a small forward and reverse motor, a lifting handle, a ball screw, a bearing seat, a nut cylinder, a connecting rod, a sampling rod, an extension rod, an inner screw cylinder, an outer screw block, a spring limit frame, a sampling cylinder, a spring, a stepped push rod, and a movable push block, our design improvements and practical use have shown that this device has a reasonable structure, good practicality, and adopts a portable cylindrical sampling structure, making it convenient for sampling personnel to carry and transfer, and for rapid sampling operations. Furthermore, it is quick and convenient to operate, facilitating widespread adoption. Attached Figure Description

[0012] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0013] Figure 1 This is a three-dimensional schematic diagram of the overall structure of a sampling device for a coal-fired boiler unit in a thermal power plant according to the present invention.

[0014] Figure 2 This is a schematic diagram showing the disassembly of the outer screw block of a sampling device for a coal-fired boiler unit in a thermal power plant, according to the present invention.

[0015] Figure 3 This is a schematic diagram of the stepped push rod connection of a sampling device for a coal-fired boiler unit in a thermal power plant, according to the present invention.

[0016] In the diagram: 1-Small forward and reverse motor, 2-Protective shell, 3-Lifting handle, 4-Ball screw, 5-Bearing seat, 6-Nut sleeve, 7-Connecting rod, 8-Sampling rod, 9-Extension rod, 10-Anti-deviation limiting plate, 11-Anti-deviation limiting rod, 12-Inner screw sleeve, 13-Outer screw block, 14-Spring limiting frame, 15-Sampling cylinder, 16-Spring, 17-Step push rod, 18-Modible push block. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0018] Please see Figures 1-3This utility model provides a technical solution: a sampling device for a coal-fired boiler in a thermal power plant, comprising a small reversible motor 1, a protective shell 2 covering the outside of the small reversible motor 1, a ball screw 4 mounted on the shaft end of the small reversible motor 1, the right end of the ball screw 4 rotatably mounted in a bearing seat 5, a nut sleeve 6 threaded onto the left end of the ball screw 4, a connecting rod 7 longitudinally fixed to the lower end of the nut sleeve 6, a sampling rod 8 horizontally fixed to the right end of the connecting rod 7, and an extension rod 9 longitudinally fixed to the lower end of the bearing seat 5, through which the sampling rod 8 slides. An inner screw cylinder 12 is fixed to the right end of the sampling rod 8. An outer screw block 13 is screwed into the inner screw cylinder 12 through the thread principle. A spring limit frame 14 is fixed to the right end of the outer screw block 13. A spring 16 is fixed to the left end of the spring limit frame 14. A stepped push rod 17 is connected to the right end of the spring 16. A sampling cylinder 15 is horizontally welded to the right end of the spring limit frame 14. A movable push block 18 is slidably arranged inside the sampling cylinder 15. This design solves the problem that most existing sampling devices adopt a fixed structure, which is cumbersome to use and inconvenient for sampling personnel to carry, transfer and quickly sample.

[0019] As the first embodiment of this utility model: a power plug is installed at the rear end of the small forward and reverse motor 1, which facilitates the power supply and use of the small forward and reverse motor 1. An anti-deviation limiting plate 10 is longitudinally fixed at the upper end of the bearing housing 5, and an anti-deviation limiting rod 11 is horizontally fixed at the left end of the anti-deviation limiting plate 10. The left end of the anti-deviation limiting rod 11 is fixed to the protective shell 2. Through the added anti-deviation limiting plate 10 and anti-deviation limiting rod 11, the bearing housing 5 can be limited to prevent rotation or displacement of the bearing housing 5.

[0020] The right end of the stepped push rod 17 passes through the sampling cylinder 15 and connects to the movable push block 18. By connecting the right end of the stepped push rod 17 through the sampling cylinder 15 and the movable push block 18, the sampled fly ash inside the sampling cylinder 15 can be slowly pushed out when the movable push block 18 is pushed to the right. A lifting handle 3 is installed at the lower end of the protective shell 2. The outside of the lifting handle 3 is woven with an anti-slip cloth, making it convenient for sampling personnel to lift and carry the device.

[0021] As a second embodiment of this utility model: the sampling personnel can simply lift and carry the device. When sampling fly ash from the boiler of a coal-fired power plant, the sampling personnel can lift the device by holding the lifting handle 3 with one hand and the anti-deviation limiting rod 11 with the other hand. Then, the sampling cylinder 15 is aligned with the fly ash sampling point in the boiler of the coal-fired power plant. The power plug is connected to the external socket, and then the small forward and reverse motor 1 is started. The small forward and reverse motor 1 can adjust the ball screw 4 to rotate in the forward direction. Because the sampling rod 8 slides through the extension rod 9, the nut cylinder 6 is limited, so that the nut cylinder 6 is only driven to move to the right outside the rotating ball screw 4. In this way, the sampling rod 8 can be driven to move to the right through the connecting rod 7, thereby realizing the inner screw cylinder 12, the outer screw block 13, the spring limiting frame 14, the sampling cylinder 15, the spring 16, and the step. After the push rod 17 and the movable push block 18 move to the right until the sampling cylinder 15 is inserted into the fly ash in the boiler of the coal-fired power plant to complete the sampling, the small forward and reverse motor 1 is controlled to reverse, so that the nut cylinder 6 moves to the left outside the ball screw 4 until the inner screw cylinder 12, the outer screw block 13, the spring limit bracket 14, the sampling cylinder 15, the spring 16, the step push rod 17 and the movable push block 18 return to the initial position. Then, the outer screw block 13 is rotated off the inner screw cylinder 12, and the step push rod 17 is pushed to the right (during this process, the spring 16 is stretched to the right). The step push rod 17 can drive the movable push block 18 to move to the right inside the sampling cylinder 15, so that the fly ash sampled inside the sampling cylinder 15 can be removed. After completion, the step push rod 17 is released, the spring 16 retracts to the left, and the movable push block 18 can be moved back to the initial position inside the sampling cylinder 15 through the step push rod 17.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0023] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A sampling device for a coal-fired boiler unit in a thermal power plant, comprising a small forward and reverse rotating motor (1), characterized in that: The small forward and reverse motor (1) is covered with a protective shell (2). A ball screw (4) is installed on the shaft end of the small forward and reverse motor (1). The right end of the ball screw (4) is rotatably installed in the bearing seat (5). The left end of the ball screw (4) is fitted with a nut sleeve (6) through the thread principle. A connecting rod (7) is longitudinally fixed at the lower end of the nut cylinder (6). A sampling rod (8) is horizontally fixed at the right end of the connecting rod (7). An extension rod (9) is longitudinally fixed at the lower end of the bearing seat (5). The sampling rod (8) slides through the extension rod (9). An inner screw cylinder (12) is fixed at the right end of the sampling rod (8). An outer screw block (13) is screwed into the inner screw cylinder (12) by the thread principle. A spring limit frame (14) is fixed at the right end of the outer screw block (13). A spring (16) is fixed at the left end of the spring limit frame (14). A stepped push rod (17) is connected to the right end of the spring (16). A sampling cylinder (15) is horizontally welded to the right end of the spring limit frame (14). A movable push block (18) is slidably arranged inside the sampling cylinder (15).

2. The sampling device for a coal-fired boiler unit in a thermal power plant according to claim 1, characterized in that: The small forward and reverse motor (1) has a power plug installed at the rear end.

3. A sampling device for a coal-fired boiler unit in a thermal power plant according to claim 1, characterized in that: The upper end of the bearing seat (5) is longitudinally fixed with an anti-deviation limiting plate (10), and the left end of the anti-deviation limiting plate (10) is horizontally fixed with an anti-deviation limiting rod (11). The left end of the anti-deviation limiting rod (11) is fixed to the protective shell (2).

4. A sampling device for a coal-fired boiler unit in a thermal power plant according to claim 1, characterized in that: The right end of the step push rod (17) passes through the sampling tube (15) and is connected to the movable push block (18).

5. A sampling device for a coal-fired boiler unit in a thermal power plant according to claim 1, characterized in that: A lifting handle (3) is installed at the lower end of the protective shell (2).

6. A sampling device for a coal-fired boiler unit in a thermal power plant according to claim 5, characterized in that: The outside of the lifting handle (3) is woven with an anti-slip cloth.

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