Circulation detection assembly suitable for inclined plane

Abstract

The utility model discloses a cyclic detection assembly suitable for an inclined plane, relates to the technical field of steam turbines, and aims to solve the problems that a differential expansion monitor is not suitable for the inclined plane easily and is not easy to circularly monitor different point positions. The cyclic detection assembly comprises a mounting frame, an electric push rod is fixedly connected to the inner wall of one side of the mounting frame, and the output end of the electric push rod is fixedly connected with a moving plate; a driving mechanism is arranged in the mounting frame; according to the utility model, under the action of the driving mechanism, the electric push rod drives the moving plate to move back and forth, so that the moving plate drives the two probe fixing frames to be close to each other and separated from each other through the traction rope, and the two probes circularly monitor the differential expansion of the steam turbine at different point positions; the angle of the probe fixing frame is adjusted according to the specific inclined plane angle formed by the high-pressure cylinder body and the rotor in the axis direction of the rotating shaft in the using process, and the problems that the differential expansion monitor is not suitable for an inclined plane easily and different point positions are not prone to being monitored circularly are effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of steam turbines, in particular to a circulation detection component suitable for inclined surfaces. Background Art

[0002] During the start-up and shutdown of the steam turbine, due to the differences in metal materials, thermal expansion coefficients, and heat dissipation, the thermal expansion of the shaft may exceed the expansion of the casing. As a result, if the allowable clearance inside the machine is exceeded, friction will occur. When the rotating and non-rotating surfaces of large machinery rotate at high speeds, friction can cause catastrophic damage. The differential expansion monitor is designed for large steam turbine generator sets. By monitoring the differential expansion, necessary measures can be taken before friction occurs.

[0003] In the prior art, the high-pressure cylinder and the rotor will be displaced along the axis of the rotating shaft during use. By forming a first inclined plane and a second inclined plane on both sides of the rotor perpendicular to the axis, the angle and length of the inclined plane can be obtained by measurement. However, the existing differential expansion monitor is usually used on a plane, and it is not easy to adjust the probe according to the angle of the inclined plane, and the applicability is poor. Moreover, during the measurement process, the probe is mostly fixed, and it is not easy to perform cyclic measurement at different points. The accuracy of measuring only two fixed points is poor compared to the cyclic measurement of multiple points.

[0004] Therefore, a cyclic detection component suitable for inclined surfaces is needed to solve the problems in the prior art that differential expansion monitors are not easily applicable to inclined surfaces and are not easy to perform cyclic monitoring of different points. Summary of the Invention

[0005] The purpose of the utility model is to provide a cyclic detection component suitable for inclined surfaces, so as to solve the problems in the prior art that the differential expansion monitor is not easily applicable to inclined surfaces and is not easy to perform cyclic monitoring on different points.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: a circulation detection component suitable for an inclined surface, comprising a mounting frame, an electric push rod fixedly connected to the inner wall of one side of the mounting frame, a movable plate fixedly connected to the output end of the electric push rod, a slide seat fixedly connected to one side of the outer wall at both ends of the mounting frame, a slider slidably connected inside the slide seat, a spring fixedly connected between the outer wall of one end of the slider and the inner wall of one end of the slider, a sleeve fixedly connected to the outer wall of one side of the slider, and a driving mechanism provided inside the mounting frame;

[0007] The driving mechanism includes four mounting plates, which are arranged in groups of two and are fixedly connected to one side of the inner wall at both ends of the mounting frame. A pulley is rotatably connected between the two mounting plates located at the same end, a traction rope is wound around the outer surface of the pulley, and a limiting plate is provided on the sliding sleeve of the outer surface of the traction rope. The outer wall of one side of the limiting plate is fixedly connected to the outer wall of one side of the corresponding slide seat.

[0008] It should be noted in the solution that the inner surfaces of the two sleeves are slidably connected to a sliding rod, a universal ball head is installed on the outer wall of the sliding rod away from the sleeve, and a probe fixing bracket is installed on the sliding rod through the universal ball head.

[0009] It is further worth mentioning that the outer surfaces of the two sleeves are provided with sliding grooves, and the outer surfaces of the two slide rods are fixedly connected with mounting blocks that slide with the corresponding sliding grooves, and a connecting rod is hinged between the outer wall of one end of the mounting block and the outer wall of one side of a nearby limit plate.

[0010] It should be further explained that a mounting bracket is fixedly connected to an outer wall on one side of the mounting frame, a support bracket is fixedly connected to the bottom surface of the mounting bracket, a screw rod is threaded through the side wall at one end of the support bracket, and support plates are rotatably connected to the outer walls on both sides of the screw rod, and the outer walls at one end of the two support plates are fixedly connected to the same fixed plate, and a motor is fixedly connected to the outer wall on one side of one of the support plates.

[0011] As a preferred embodiment, the two sliders are symmetrically arranged, and the two ends of the traction rope are respectively fixedly connected to the outer wall of one side of the movable plate and the outer wall of one end of the corresponding slider.

[0012] As a preferred embodiment, the connecting rod is arranged in an inclined shape, and the output end of the motor rotates through one side outer wall of a nearby support plate and is coaxially fixedly connected to one side outer wall of the screw rod.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. Through the action of the driving mechanism, the electric push rod pulls the movable plate to move, so that the movable plate pulls the two sliders closer to each other through the traction rope, and then the two probe fixing frames are closer to each other. The electric push rod pushes the movable plate to move, and the two probe fixing frames are moved away from each other under the action of the spring, thereby realizing the cyclic monitoring of the expansion difference of the steam turbine at different points, improving the monitoring accuracy, and effectively avoiding the problem that the expansion difference monitor is difficult to perform cyclic monitoring of different points.

[0015] 2. Through the universal ball head, the angle of the probe fixing bracket can be adjusted according to the specific inclined angle formed by the high-pressure cylinder and the rotor along the axis of the rotating shaft during use, so that the probe can better monitor the expansion difference. The operation is simple and effectively avoids the problem that the expansion difference monitor is not easy to apply to inclined surfaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of a top-view cross-sectional structure of the installation frame of the present invention;

[0018] Figure 3 This is a side structural diagram of the slide seat of the present invention;

[0019] Figure 4 This is a side structural schematic diagram of the mounting bracket of the present invention.

[0020] Numbers in the figure: 1. Mounting frame; 2. Electric push rod; 3. Moving plate; 4. Slide seat; 5. Slider; 6. Spring; 7. Sleeve; 8. Driving mechanism; 81. Mounting plate; 82. Pulley; 83. Traction rope; 84. Limiting plate; 9. Slide rod; 10. Universal ball joint; 11. Probe fixing bracket; 12. Slide groove; 13. Mounting block; 14. Connecting rod; 15. Mounting bracket; 16. Support bracket; 17. Screw; 18. Support plate; 19. Fixed plate; 20. Motor. DETAILED DESCRIPTION

[0021] 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.

[0022] Example: Figure 1-Figure 4 As shown, the utility model provides a technical solution, including a mounting frame 1, an electric push rod 2 is fixedly connected to the inner wall of one side of the mounting frame 1, a movable plate 3 is fixedly connected to the output end of the electric push rod 2, a slide seat 4 is fixedly connected to one side of the outer wall of both ends of the mounting frame 1, a slider 5 is slidably connected inside the slider 4, a spring 6 is fixedly connected between the outer wall of one end of the slider 5 and the inner wall of one end of the slider 4, a sleeve 7 is fixedly connected to the outer wall of one side of the slider 5, and a driving mechanism 8 is provided inside the mounting frame 1;

[0023] The driving mechanism 8 includes four mounting plates 81, which are arranged in groups of two and are fixedly connected to one side of the inner wall at both ends of the mounting frame 1. A pulley 82 is rotatably connected between the two mounting plates 81 at the same end. A traction rope 83 is wound around the outer surface of the pulley 82. A limiting plate 84 is slidingly sleeved on the outer surface of the traction rope 83. The outer wall of one side of the limiting plate 84 is fixedly connected to the outer wall of one side of the corresponding slide 4.

[0024] Further as Figure 1 and Figure 3 As shown, it is worth noting that the inner surfaces of the two sleeves 7 are slidably connected with slide rods 9, and the outer wall of the slide rod 9 away from the sleeve 7 is installed with a universal ball head 10, and the slide rod 9 is installed with a probe fixing bracket 11 through the universal ball head 10.

[0025] Further as Figure 3 As shown, it is worth mentioning that the outer surfaces of the two sleeves 7 are provided with a slide groove 12, and the outer surfaces of the two slide rods 9 are fixedly connected with a mounting block 13 that slides with the corresponding slide groove 12, and a connecting rod 14 is hinged between the outer wall of one end of the mounting block 13 and the outer wall of one side of a nearby limit plate 84.

[0026] Further as Figure 1 and Figure 4 As shown, it is worth mentioning that a mounting frame 15 is fixedly connected to the outer wall of one side of the mounting frame 1, a support frame 16 is fixedly connected to the bottom surface of the mounting frame 15, a screw rod 17 is threaded through the side wall at one end of the support frame 16, and support plates 18 are rotatably connected to the outer walls on both sides of the screw rod 17. The outer walls at one end of the two support plates 18 are fixedly connected to the same fixed plate 19, and a motor 20 is fixedly connected to the outer wall of one side of one of the support plates 18.

[0027] Further as Figure 1 and Figure 3 As shown, it is worth mentioning that the two sliders 5 are symmetrically arranged, and the two ends of the traction rope 83 are respectively fixedly connected to the outer wall of one side of the movable plate 3 and the outer wall of one end of the corresponding slider 5. When the electric push rod 2 pulls the movable plate 3 to move, the two sliders 5 are brought closer to each other through the traction rope 83. When the electric push rod 2 pushes the movable plate 3 to move, the two sliders 5 are pushed apart from each other under the action of the spring 6.

[0028] Further as Figure 3 and Figure 4As shown, it is worth mentioning that the connecting rod 14 is arranged in an inclined shape, so that when the slider 5 moves, the connecting rod 14 pushes the slide bar 9 to slide inside the sleeve 7, thereby adjusting the sliding length of the slide bar 9. The output end of the motor 20 rotates through the outer wall of one side of a nearby support plate 18 and is coaxially fixed with the outer wall of one side of the screw rod 17. The motor 20 drives the screw rod 17 to move, thereby driving the support frame 16 to move, so that the probe installed on the probe fixing frame 11 is better close to the turbine equipment.

[0029] In summary: When the detection component is in use, the component is first installed as a whole on the turbine equipment through the fixing plate 19, and then the probe on the differential expansion monitor is installed in the two probe fixing frames 11, and the motor 20 is turned on to drive the screw 17 to rotate. Under the action of the thread, the screw 17 drives the support frame 16 to move, so that the probe installed on the probe fixing frame 11 is closer to the monitored area of ​​the turbine equipment. According to the specific inclined plane angle formed by the high-pressure cylinder and the rotor along the axis of the rotating shaft during use, the installation angle of the probe is adjusted by the set universal ball head 10, so that it can better perform differential expansion monitoring. It is simple to operate and has strong applicability, and effectively avoids the problem that the differential expansion monitor is not easy to apply to inclined surfaces.

[0030] When monitoring the steam turbine, the electric push rod 2 is turned on to make it in a repetitive working state. In this state, the electric push rod 2 pulls the movable plate 3 to move, and the movable plate 3 simultaneously pulls the two traction ropes 83. Under the sliding cooperation between the slide seat 4 and the slider 5, the two traction ropes 83 drive the two sliders 5 to move closer to each other, so that the two probes installed in the two probe fixing frames 11 move closer to each other. At this time, the spring 6 is forced to contract, and at the same time, the slide rod 9 is pushed out of the sleeve 7 gradually through the connecting rod 14 during the movement of the slider 5. Then, the electric push rod 2 pushes the movable plate 3 to move. Move, at this time, the two sliders 5 are pushed apart from each other under the elastic action of the spring 6, so that the two probes installed in the two probe fixing frames 11 are away from each other, and at the same time, the slider 5 pulls the slide bar 9 into the sleeve 7 through the connecting rod 14, and the cyclic movement of the probe is realized with the repetitive work of the electric push rod 2, and the distance between the probe and the inclined surface is kept consistent during the cyclic movement of the probe, thereby realizing the cyclic monitoring of the expansion difference of the turbine at different points, improving the monitoring accuracy, and effectively avoiding the problem that the expansion difference monitor is not easy to perform cyclic monitoring of different points.

[0031] The electric push rod 2 and the motor 20 can be purchased on the market. The electric push rod 2 and the motor 20 are equipped with a power supply, which is a mature technology in this field and has been fully disclosed, so they are not repeated in the specification.

[0032] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A circulation detection assembly suitable for an inclined surface, comprising a mounting frame (1), characterized in that: An electric push rod (2) is fixedly connected to the inner wall of one side of the installation frame (1), a movable plate (3) is fixedly connected to the output end of the electric push rod (2), a sliding seat (4) is fixedly connected to one side of the outer wall at both ends of the installation frame (1), a slider (5) is slidably connected inside the slider (4), a spring (6) is fixedly connected between the outer wall of one end of the slider (5) and the inner wall of one end of the slider (4), a sleeve (7) is fixedly connected to the outer wall of one side of the slider (5), and a driving mechanism (8) is provided inside the installation frame (1); The driving mechanism (8) comprises four mounting plates (81), which are arranged in pairs and fixedly connected to one side of the inner wall at both ends of the mounting frame (1). A pulley (82) is rotatably connected between two mounting plates (81) located at the same end. A traction rope (83) is wound around the outer surface of the pulley (82). A limiting plate (84) is slidably sleeved on the outer surface of the traction rope (83). The outer wall of one side of the limiting plate (84) is fixedly connected to the outer wall of one side of the corresponding slide seat (4).

2. A circulation detection assembly suitable for inclined surfaces according to claim 1, characterized in that: The inner surfaces of the two sleeves (7) are both slidably connected to a slide rod (9), and a universal ball head (10) is installed on the outer wall of the slide rod (9) away from the sleeve (7), and a probe fixing frame (11) is installed on the slide rod (9) through the universal ball head (10).

3. A circulation detection assembly suitable for inclined surfaces according to claim 2, characterized in that: The outer surfaces of the two sleeves (7) are each provided with a slide groove (12), and the outer surfaces of the two slide rods (9) are each fixedly connected with a mounting block (13) that slides in cooperation with the corresponding slide groove (12), and a connecting rod (14) is hinged between the outer wall of one end of the mounting block (13) and the outer wall of one side of a nearby limiting plate (84).

4. A circulation detection assembly suitable for inclined surfaces according to claim 3, characterized in that: The outer wall of one side of the mounting frame (1) is fixedly connected to a mounting frame (15), the bottom surface of the mounting frame (15) is fixedly connected to a support frame (16), a screw rod (17) is threadedly passed through the side wall of one end of the support frame (16), and the outer walls on both sides of the screw rod (17) are rotatably connected to support plates (18), and the outer walls of one end of the two support plates (18) are fixedly connected to the same fixed plate (19), and the outer wall of one side of one of the support plates (18) is fixedly connected to a motor (20).

5. A circulation detection assembly suitable for inclined surfaces according to claim 4, characterized in that: The two sliders (5) are symmetrically arranged, and the two ends of the traction rope (83) are respectively fixedly connected to the outer wall of one side of the movable plate (3) and the outer wall of one end of the corresponding slider (5).

6. A circulation detection assembly suitable for inclined surfaces according to claim 5, characterized in that: The connecting rod (14) is arranged in an inclined shape, and the output end of the motor (20) rotates through the outer wall of one side of a nearby support plate (18) and is coaxially fixedly connected to the outer wall of one side of the screw rod (17).

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