Position detection sensor structure for thermal power plant

Abstract

The utility model relates to the technical field of thermal power generation, in particular to a position detection sensor structure for a thermal power plant, which comprises a base and a hydraulic cylinder fixedly arranged at the upper end of the base, a brake valve is rotatably arranged on one side of the base through a movable connecting piece, and a connecting rod is rotatably arranged at the upper end of the brake valve through a movable connecting piece. A fixing frame is installed at the position, between the brake valve and the hydraulic cylinder, of the top of the base, brake pads are fixedly arranged on the opposite sides of the fixing frame and the brake valve, a millimeter wave sensor is arranged at the upper end of the fixing frame, and the connecting rod is provided with a proximity switch matched with the millimeter wave sensor. According to the utility model, the position of the proximity switch can be conveniently adjusted according to the abrasion of the brake pad, so that the position detection precision of the brake is improved, and the braking effect is improved; the millimeter wave sensor is used for detection, the dustproof effect is good, the precision is high, and the anti-interference capability is strong.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal power generation, in particular to a position detection sensor structure for a thermal power plant. Background Art

[0002] Thermal power plants, also known as thermal power plants, are plants that use combustible materials (such as coal) as fuel to produce electricity. The basic production process is as follows: When the fuel burns, it heats water to generate steam, converting the fuel's chemical energy into thermal energy. The steam pressure drives the turbine, converting the thermal energy into mechanical energy. The turbine then drives the generator, converting the mechanical energy into electrical energy. The prime mover is typically a steam engine or gas turbine; smaller power plants may also use internal combustion engines. They all generate electricity by exploiting the pressure drop caused by the passage of high-temperature, high-pressure steam or gas through a turbine to low-pressure air or condensate. Belt conveyors, as a type of transportation equipment, were once widely used in the power, port, and coal industries. However, they suffer from poor operational stability. The installation method and selection of detection components in the belt conveyor brake position detection device can lead to frequent belt conveyor failures and frequent tripping of the conveyor system, impacting the safe and stable operation of the equipment and system.

[0003] Patent publication number CN211945111U discloses a brake position detection device for a thermal power plant belt conveyor, which relates to the technical field of thermal power plant belt conveyor equipment. The device comprises a mounting platform, the top of which is fixedly connected to a base frame, a rotating shaft plugged into one side of the base frame, a brake valve movably connected to one side of the rotating shaft, a brake pad fixedly connected to one side of the brake valve, and a fixed frame fixedly connected to the top of the mounting platform. The brake position detection device for a thermal power plant belt conveyor extends the service life of the brake by coordinating the base frame, rotating shaft, brake valve, brake pad, fixed frame, connecting rod, hydraulic device, hydraulic column, and connecting plate, thereby resolving the problem of low wear reliability of existing brakes. The device also increases the brake stroke by coordinating the mounting platform, brake valve, brake pad, fixed frame, infrared sensor, connecting rod, proximity switch, hydraulic device, and hydraulic column, thereby resolving the problem of short brake stroke and easy misoperation.

[0004] The above patent has the following problems:

[0005] Since brake pads will wear out after long-term use, the stroke of the hydraulic device will change after a period of use, which will lead to errors in the millimeter wave sensor and proximity switch, reducing the braking effect of the brake pads. In addition, the infrared sensor has poor dustproof effect, insufficient accuracy, and poor anti-interference ability. The existing technology is not convenient for adjusting the position of the proximity switch, so we have introduced a position detection sensor structure for thermal power plants. Utility Model Content

[0006] The purpose of the present utility model is to provide a position detection sensor structure for a thermal power plant, which can facilitate the adjustment of the position of the proximity switch according to the wear of the brake pad, thereby improving the position detection accuracy of the brake and improving the braking effect; using a millimeter wave sensor for detection, it has good dustproof effect, high accuracy, and strong anti-interference ability, so as to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above purpose, the present invention provides the following technical solutions:

[0008] A position detection sensor structure for a thermal power plant comprises a base and a hydraulic cylinder fixedly arranged at the upper end of the base, a brake valve being rotatably provided on one side of the base via a movable connection, a connecting rod being rotatably provided on the upper end of the brake valve via a movable connection, the other end of the connecting rod being fixedly connected to the piston rod of the hydraulic cylinder via a connecting plate, a fixing frame being installed on the top of the base between the brake valve and the hydraulic cylinder, brake pads being fixedly provided on the opposite side of the fixing frame and the brake valve, a millimeter wave sensor being provided on the upper end of the fixing frame, and a proximity switch cooperating with the millimeter wave sensor being provided on the connecting rod.

[0009] Furthermore, a strip groove is provided on both sides of the proximity switch, a rotating plate is slidably provided in the strip groove, one end of the rotating plate extends outside the strip groove, and the middle part of the rotating plate is rotatably connected to the strip groove through a rotating shaft, and a locking rod is fixed on the opposite side of one end of the two rotating plates located in the strip groove, and a plurality of locking grooves cooperating with the locking rod are evenly provided on the wall of the connecting rod, and a spring is fixed on the opposite side of the two rotating plates, and the other end of the spring is fixedly connected to the strip groove.

[0010] Furthermore, the locking rod is provided with a chamfer at one end close to the connecting rod.

[0011] Furthermore, the chamfer angle is set to 45°.

[0012] Furthermore, the spring is always in a compressed state.

[0013] Furthermore, the connecting rod wall is provided with a scale.

[0014] Furthermore, a push block is fixedly provided on one end of the rotating plate outside the strip groove.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The position detection sensor structure for a thermal power plant is equipped with a brake valve, a brake pad, a base, a fixing frame, a hydraulic cylinder, a connecting plate, a millimeter wave sensor, a connecting rod, a push block, a rotating plate, a proximity switch, a scale, a rotating shaft, a spring, and a locking rod. When adjustment is required, the two push blocks are pushed at the same time, and the push blocks drive the rotating plate to rotate. The rotating plate rotates around the rotating shaft. The rotating plate squeezes the spring and drives the corresponding locking rod to move out of the corresponding locking groove. At this time, the proximity switch can be moved, and the proximity switch can be adjusted more accurately through the scale. The position of the proximity switch can be adjusted conveniently according to the wear of the brake pad, thereby improving the position detection accuracy of the brake and improving the braking effect. The millimeter wave sensor is used for detection, which has good dustproof effect, high precision, and strong anti-interference ability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The figure is a structural diagram of a position detection sensor structure for a thermal power plant.

[0018] Figure 2 The figure is a side view schematic diagram of a position detection sensor structure for a thermal power plant.

[0019] Figure 3 for Figure 1 An enlarged schematic diagram of part A in the figure.

[0020] Figure 4 for Figure 2 An enlarged schematic diagram of part B in the figure.

[0021] In the figure: 1. Brake valve; 2. Brake pad; 3. Base; 4. Fixing bracket; 5. Hydraulic cylinder; 6. Connecting plate; 7. Millimeter wave sensor; 8. Connecting rod; 9. Push block; 10. Rotating plate; 11. Locking rod; 12. Scale; 13. Rotating shaft; 14. Spring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figures 1 to 4 , the utility model provides a technical solution:

[0024] A position detection sensor structure for a thermal power plant includes a base 3 and a hydraulic cylinder 5 fixedly arranged at the upper end of the base 3. A brake valve 1 is rotatably provided on one side of the base 3 through a movable connection. A connecting rod 8 is rotatably provided on the upper end of the brake valve 1 through a movable connection. The other end of the connecting rod 8 is fixedly connected to the piston rod of the hydraulic cylinder 5 through a connecting plate 6. A fixing frame 4 is installed on the top of the base 3 between the brake valve 1 and the hydraulic cylinder 5. Brake pads 2 are fixedly provided on the opposite side of the fixing frame 4 and the brake valve 1. A millimeter wave sensor 7 is provided on the upper end of the fixing frame 4, and the connecting rod 8 is provided with a proximity switch that cooperates with the millimeter wave sensor 7.

[0025] The locking rod 11 is fixed on one end of the rotating plate 10, and the locking rod 11 is engaged with the locking groove.

[0026] When adjustment is required, push the two push blocks 9 at the same time, and the push blocks 9 drive the rotating plate 10 to rotate, and the rotating plate 10 rotates around the rotating shaft 13. The rotating plate 10 squeezes the spring 14 while driving the corresponding locking rod 11 to move out of the corresponding locking groove. At this time, the proximity switch can be moved, and the proximity switch can be adjusted more accurately through the scale 12. The position of the proximity switch can be adjusted according to the wear of the brake pad 2, thereby improving the position detection accuracy of the brake and improving the braking effect. It uses a millimeter wave sensor for detection, has good dustproof effect, high precision, and strong anti-interference ability.

[0027] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A position detection sensor structure for a thermal power plant, comprising a base (3) and a hydraulic cylinder (5) fixedly arranged on the upper end of the base (3), characterized in that: A brake valve (1) is rotatably provided on one side of the base (3) through a movable connecting piece, a connecting rod (8) is rotatably provided on the upper end of the brake valve (1) through a movable connecting piece, the other end of the connecting rod (8) is fixedly connected to the piston rod of the hydraulic cylinder (5) through a connecting piece (6), a fixing frame (4) is installed on the top of the base (3) between the brake valve (1) and the hydraulic cylinder (5), a brake pad (2) is fixedly provided on the opposite side of the fixing frame (4) and the brake valve (1), a millimeter wave sensor (7) is provided on the upper end of the fixing frame (4), and the connecting rod (8) is provided with a proximity switch that cooperates with the millimeter wave sensor (7).

2. A position detection sensor structure for a thermal power plant according to claim 1, characterized in that: The proximity switch is provided with a strip groove on both sides, a rotating plate (10) is slidably provided in the strip groove, one end of the rotating plate (10) extends outside the strip groove, and the middle of the rotating plate (10) is rotatably connected to the strip groove through a rotating shaft (13), and a locking rod (11) is fixed on the opposite side of one end of the two rotating plates (10) located in the strip groove, and a plurality of locking grooves matching the locking rod (11) are evenly provided on the rod wall of the connecting rod (8), and a spring (14) is fixed on the opposite side of the two rotating plates (10), and the other end of the spring (14) is fixedly connected to the strip groove.

3. A position detection sensor structure for a thermal power plant according to claim 2, characterized in that: The locking rod (11) is provided with a chamfer at one end close to the connecting rod (8).

4. A position detection sensor structure for a thermal power plant according to claim 3, characterized in that: The chamfer angle is set to 45°.

5. The position detection sensor structure for a thermal power plant according to claim 2, characterized in that: The spring (14) is always in a compressed state.

6. The position detection sensor structure for a thermal power plant according to claim 1, characterized in that: The rod wall of the connecting rod (8) is provided with a scale (12).

7. The position detection sensor structure for a thermal power plant according to claim 2, characterized in that: A push block (9) is fixedly provided at one end of the rotating plate (10) located outside the strip groove.

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