Automatic detection device for coal, powder, air and smoke pipelines of coal power unit

Abstract

The utility model relates to the technical field of electric power, in particular to an automatic detection device for coal, powder, wind and smoke pipelines of a coal power unit, which comprises a box body, a telescopic rod module, a plug-in assembly and a detection module, and is characterized in that the telescopic rod module comprises a rotating force driving rod and at least two driven section rods which are sequentially sleeved on the rotating force driving rod from inside to outside; the driven section rod on the outermost layer is fixedly connected with the box body, the rotating force driving rod sequentially pushes the driven section rods from inside to outside to do axial motion to enter a to-be-detected pipeline after rotating, and a plurality of elastic protruding units distributed in a spiral shape are arranged on the outer wall face of the rotating force driving rod. And a plurality of fixed salient points which are distributed in a square array are arranged on the inner wall of the driven section rod. The technical problem that in the prior art, detection points of coal, powder, air and smoke pipeline detection instruments of a coal power unit are fixed and cannot be changed is solved.

Description

Technical Field

[0001] This utility model relates to the field of power technology, specifically to an automatic detection device for coal, pulverized coal, air, and flue gas pipelines in coal-fired power units. Background Technology

[0002] With the increasing proportion of renewable energy generation, coal-fired power units, as an important component of my country's energy system, continue to play a vital role. The new energy system has given coal-fired power units new missions, and their role as a flexible and adjustable power source is becoming increasingly prominent. Furthermore, based on the requirements for clean emissions in the energy system, the cleanliness constraints on the operation of coal-fired power units are continuously increasing. Therefore, coal-fired power units need to have higher self-sensing and intelligent control capabilities to adapt to the characteristics of rapid changes in grid and unit loads, large fluctuations in operating ranges, and the near-boundary operation of related systems (such as denitrification systems).

[0003] Currently, the detection instruments for coal, pulverized coal, air, and flue gas pipelines in coal-fired power units mostly adopt fixed insertion detection devices for single parameter detection. These devices are suitable for continuous parameter detection during unit operation monitoring and control. Correspondingly, the sampling devices mostly adopt manual sampling devices with fixed points. These sampling devices can sample at a specific location, but they lack good self-sensing and intelligent control capabilities to adapt to the characteristics of rapid changes in power grid and unit load, large fluctuations in operating range, and the operation of related systems (such as denitrification systems) at the edge of their boundaries. Summary of the Invention

[0004] To address the problem of fixed and unchangeable detection points in existing coal, pulverized coal, air, and flue gas pipeline detection instruments for coal-fired power units, this application proposes an automatic detection device for coal, pulverized coal, air, and flue gas pipelines in coal-fired power units, thus solving the aforementioned technical problem.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] This utility model provides an automatic detection device for coal, pulverized coal, air, and flue gas pipelines in coal-fired power units, comprising: a housing, the housing being installed on the pipeline to be tested, and a telescopic rod module that can extend into the pipeline; the telescopic rod module comprising a rotary drive rod and at least two driven sections sequentially sleeved on the rotary drive rod from the inside out, wherein the outermost driven section is fixedly connected to the housing, and after the rotary drive rod rotates, it pushes the driven sections axially from the inside out to enter the pipeline to be tested; the outer wall of the rotary drive rod is provided with multiple elastic protrusions arranged in a spiral pattern, and the inner wall of the driven sections is provided with multiple fixed protrusions arranged in a square array. When the rotary drive rod rotates, the elastic protrusion unit acts on the fixed protrusion to push the corresponding driven section rod to move axially, thereby pushing the driven section rod out of the range of action of the elastic protrusion unit. After the rotary drive rod pushes out the driven section rod at the inner position, the elastic protrusion unit expands outward under its own elastic force to act on the fixed protrusion of the driven section rod at the adjacent outer position, thereby pushing out the driven section rod at that position further. A plug-in assembly is disposed between two adjacent driven sections so that the driven section rod at the inner position can be connected to the driven section rod at the outer position after being pushed out. A detection module is disposed on the innermost driven section rod.

[0007] Furthermore, the plug-in assembly includes a slot and a protrusion that cooperate with each other. The protrusion is disposed on the outer wall of the driven section rod in the inner layer position and is located at the end of the driven section rod away from the pipe to be tested. The slot is disposed on the inner wall of the driven section rod in the outer layer position and is located at the end of the driven section rod closer to the pipe to be tested.

[0008] Furthermore, the elastic protrusion unit includes a spring and a flexible pusher wrapped around the spring, one end of the spring abutting against the outer wall surface of the rotary drive rod, and the other end of the spring acting on the flexible pusher.

[0009] Furthermore, the detection module includes a delivery sensor, which is disposed on one end of the driven section near the inside of the pipe to be tested.

[0010] Furthermore, the detection module includes a rope-wound position sensor. The sensing head of the rope-wound position sensor is disposed on one end of the driven rod near the inside of the pipe to be tested. The rope and rope shaft of the rope-wound position sensor are disposed in the housing. One end of the rope is connected to the sensing head and extends into the pipe to be tested along with the driven rod.

[0011] Furthermore, it also includes a drive motor, the output shaft of which is fixedly connected to the rotary drive rod.

[0012] Furthermore, the drive motor is controlled by a host computer via a PLC program.

[0013] Furthermore, the axial spacing between adjacent elastic protrusions on the rotary drive rod is the same as the axial spacing between fixed protrusions on the driven rod.

[0014] Furthermore, a connector is provided at one end of the housing, and the housing is installed on the outside of the insulation layer of the pipe to be tested through the connector.

[0015] Based on the above technical solution, the technical effects that this utility model can achieve are as follows:

[0016] This utility model discloses an automatic detection device for coal, pulverized coal, air, and flue gas pipelines in coal-fired power units. The housing is installed on the pipeline to be tested. The rotary drive rod of the telescopic rod module rotates, and after rotation, it sequentially pushes the driven sections from the inside out to move axially into the pipeline. The innermost driven section is the first to enter the pipeline and extends the longest distance into it. The detection module, located on the innermost driven section, also enters the pipeline for detection. By controlling the rotation of the rotary drive rod, the distance the detection module extends into the pipeline is changed. Specifically, the rotation... The outer wall of the drive rod is equipped with multiple elastic protrusions arranged in a spiral pattern, while the inner wall of the driven rod is equipped with multiple fixed protrusions arranged in a square array. When the drive rod rotates, the elastic protrusions act on the fixed protrusions, pushing the corresponding driven rod to move axially out of the range of action of the elastic protrusions. First, the innermost driven rod is pushed out of the drive rod. At this time, part of the insertion component on the innermost driven rod will cooperate with another part of the insertion component on the adjacent outer driven rod, so that the two adjacent driven rods... When the moving rod is connected, the elastic protrusion unit on the rotary drive rod is no longer restricted by the inner wall of the innermost driven rod. The elastic force of the elastic protrusion unit is partially released, and it expands outward and acts on the adjacent outer driven rod that has already formed a connection with the innermost driven rod, pushing the driven rod into the pipe to be tested. This action also pushes the detection module located on the innermost driven rod further into the pipe to be tested. This process is repeated until the elastic protrusion unit of the rotary drive rod acts on the outermost position that is fixedly connected to the housing. The detection module is positioned on the driven rod to reach its maximum extension length. The process of the telescopic rod module controlling the detection module to retract into the housing is the reverse of the above process. The automatic detection device uses the telescopic function of the telescopic rod module to adjust the position of the detection module in the pipeline to be tested in real time, thereby solving the technical problem of fixed and unchangeable detection points of coal, pulverized coal, air and flue gas pipeline detection instruments in coal-fired power units in the existing technology. This enables the detection device to obtain better self-sensing and intelligent control capabilities to adapt to the characteristics of rapid changes in power grid and unit load, large fluctuations in operating range, and near-boundary operation of related systems (such as denitrification systems). Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the automatic detection device for coal, pulverized coal, air, and flue gas pipelines of the coal-fired power unit according to this utility model.

[0018] Figure 2 This is a schematic diagram of the internal structure of the automatic detection device for coal, pulverized coal, air, and flue gas pipelines of the coal-fired power unit according to this utility model.

[0019] In this utility model: 1-box body, 11-connector; 2-telescopic rod module, 21-rotational drive rod, 22-driven joint rod, 23-elastic protrusion unit, 231-spring, 232-flexible pusher, 24-fixed protrusion; 3-plug-in assembly, 31-slot, 32-protrusion pin; 4-detection module, 41-conveying sensor, 42-rope-wound position sensor, 421-sensing head, 422-rope winding; 5-drive motor; 6-host computer. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0021] like Figure 1-2 As shown, this utility model provides an automatic detection device for coal, pulverized coal, air, and flue gas pipelines of coal-fired power units, including a housing 1, a telescopic rod module 2, a plug-in assembly 3, and a detection module 4. The housing 1 is installed on the pipeline to be tested. The telescopic rod module 2, which can extend into the pipeline to be tested, is arranged inside the housing 1. The telescopic rod module 2 includes a rotary drive rod 21 and at least two driven sections 22 sequentially sleeved on the rotary drive rod 21 from the inside to the outside. The outermost driven section 22 is fixedly connected to the housing 1. After the rotary drive rod 21 rotates, it pushes the driven sections 22 axially from the inside to the outside to enter the pipeline to be tested. The outer wall of the rotary drive rod 21 is provided with a plurality of elastic protrusions 23 arranged in a spiral pattern, and the inner wall of the driven section 22 is provided with a plurality of elastic protrusions 23 arranged in a spiral pattern. Multiple fixed protrusions 24 are distributed in a square array. When the rotary drive rod 21 rotates, the elastic protrusion unit 23 acts on the fixed protrusion 24 to push the corresponding driven section 22 to move axially so that the driven section 22 is pushed out of the range of action of the elastic protrusion unit 23. After the rotary drive rod 21 pushes out the driven section 22 in the inner position, the elastic protrusion unit 23 expands outward under its own elastic force to act on the fixed protrusion 24 of the driven section 22 in the adjacent outer position so that the driven section 22 in the inner position is connected to the driven section 22 in the outer position after being pushed out. The detection module 4 is arranged on the innermost driven section 22.

[0022] In one specific embodiment of this utility model, the plug-in assembly 3 includes a groove 31 and a protruding pin 32 that cooperate with each other. The protruding pin 32 is disposed on the outer wall of the driven section 22 in the inner layer position and is located at the end of the driven section 22 away from the pipe to be tested. The groove 31 is disposed on the inner wall of the driven section 22 in the outer layer position and is located at the end of the driven section 22 closer to the pipe to be tested. It should be noted that the length of the protruding pin 32 protruding from the outer wall of the driven section 22 must be shorter than the length of the fixed protrusion 24 protruding from the inner wall of the driven section 22 to avoid interference.

[0023] In one specific embodiment of the present invention, the elastic protrusion unit 23 includes a spring 231 and a flexible pusher 232 wrapped around the spring 231. One end of the spring 231 abuts against the outer wall of the rotary drive rod 21, and the other end of the spring 231 acts on the flexible pusher 232.

[0024] In one specific embodiment of this utility model, the detection module 4 includes a conveying sensor 41, which is disposed on one end of the driven rod 22 near the pipe to be tested. The conveying sensor 41 can be equipped with various types of sensing and sampling devices such as cameras, sampling boxes, and charge sensors according to actual application requirements to obtain data such as the state parameters of the running process medium.

[0025] In one specific embodiment of this utility model, the detection module 4 includes a rope-wound 422 type position sensor 42. The sensing head 421 of the rope-wound 422 type position sensor 42 is disposed on one end of the driven section 22 near the inside of the pipe to be tested. The rope 422 and the rope shaft of the rope-wound 422 type position sensor 42 are disposed in the housing 1. One end of the rope 422 is connected to the sensing head 421 and extends into the pipe to be tested along with the driven section 22.

[0026] In one specific embodiment of this utility model, a drive motor 5 is also included, and the output shaft of the drive motor 5 is fixedly connected to the rotary drive rod 21.

[0027] Furthermore, the drive motor 5 is controlled by the host computer 6 through a PLC program.

[0028] In one specific embodiment of this utility model, the axial distance between adjacent elastic protrusions 23 on the rotary drive rod 21 is the same as the axial distance between fixed protrusions 24 on the driven rod 22.

[0029] In one specific embodiment of this utility model, a connector 11 is provided at one end of the housing 1. The housing 1 is installed on the outside of the insulation layer of the pipe to be tested through the connector 11. The connector 11 can be a flange.

[0030] It should be understood that the specific embodiments described above are only for explaining the present invention and are not intended to limit the present invention. Obvious variations or modifications derived from the spirit of the present invention are still within the protection scope of the present invention.

Claims

1. An automatic detection device for coal, pulverized coal, air, and flue gas pipelines in a coal-fired power unit, characterized in that, include: Box (1), the box (1) is installed on the pipe to be tested, and the box (1) is equipped with a telescopic rod module (2) that can extend into the pipe to be tested; The telescopic rod module (2) includes a rotary drive rod (21) and at least two driven sections (22) sequentially sleeved on the rotary drive rod (21) from the inside out. The outermost driven section (22) is fixedly connected to the housing (1). After the rotary drive rod (21) rotates, it pushes the driven sections (22) axially from the inside out to enter the pipe to be tested. The outer wall of the rotary drive rod (21) is provided with a plurality of elastic protrusion units (23) arranged in a spiral pattern, and the inner wall of the driven section (22) is provided with a plurality of fixed sections arranged in a square array. When the rotary drive rod (21) rotates, the elastic protrusion unit (23) acts on the fixed protrusion (24) to push the corresponding driven rod (22) to move axially so as to push the driven rod (22) out of the range of action of the elastic protrusion unit (23). After the rotary drive rod (21) pushes out the driven rod (22) in the inner layer position, the elastic protrusion unit (23) expands outward under its own elastic force to act on the fixed protrusion (24) of the driven rod (22) in the adjacent outer layer position so as to continue to push out the driven rod (22) in that position. A plug-in assembly (3) is disposed between two adjacent driven rods (22) so that the driven rod (22) at the inner position is extended and connected to the driven rod (22) at the outer position; The detection module (4) is configured on the innermost driven joint (22).

2. The automatic detection device for coal, pulverized coal, air, and flue gas pipelines of coal-fired power units according to claim 1, characterized in that, The plug-in assembly (3) includes a slot (31) and a protrusion (32) that cooperate with each other. The protrusion (32) is disposed on the outer wall of the driven section (22) in the inner layer position and is located at the end of the driven section (22) away from the pipe to be tested. The slot (31) is disposed on the inner wall of the driven section (22) in the outer layer position and is located at the end of the driven section (22) close to the pipe to be tested.

3. The automatic detection device for coal, pulverized coal, air, and flue gas pipelines of coal-fired power units according to claim 1, characterized in that, The elastic protrusion unit (23) includes a spring (231) and a flexible pusher (232) wrapped around the spring (231). One end of the spring (231) abuts against the outer wall of the rotary drive rod (21), and the other end of the spring (231) acts on the flexible pusher (232).

4. The automatic detection device for coal, pulverized coal, air, and flue gas pipelines of coal-fired power units according to claim 1, characterized in that, The detection module (4) includes a conveying sensor (41), which is disposed on one end of the driven rod (22) near the inside of the pipe to be tested.

5. The automatic detection device for coal, pulverized coal, air, and flue gas pipelines of coal-fired power units according to claim 1, characterized in that, The detection module (4) includes a rope-wound position sensor (42). The sensing head (421) of the rope-wound position sensor (42) is disposed on one end of the driven rod (22) near the pipe to be tested. The rope (422) and the rope shaft of the rope-wound position sensor (42) are disposed in the housing (1). One end of the rope (422) is connected to the sensing head (421) and extends into the pipe to be tested along with the driven rod (22).

6. The automatic detection device for coal, pulverized coal, air, and flue gas pipelines of coal-fired power units according to claim 1, characterized in that, It also includes a drive motor (5), the output shaft of which is fixedly connected to the rotary drive rod (21).

7. The automatic detection device for coal, pulverized coal, air, and flue gas pipelines of coal-fired power units according to claim 6, characterized in that, The drive motor (5) is controlled by the host computer (6) through a PLC program.

8. The automatic detection device for coal, pulverized coal, air, and flue gas pipelines of coal-fired power units according to claim 1, characterized in that, The axial spacing between adjacent elastic protrusions (23) on the rotary drive rod (21) is the same as the axial spacing between fixed protrusions (24) on the driven rod (22).

9. The automatic detection device for coal, pulverized coal, air, and flue gas pipelines of coal-fired power units according to claim 1, characterized in that, One end of the housing (1) is equipped with a connector (11), and the housing (1) is installed on the outside of the insulation layer of the pipe to be tested through the connector (11).

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