A trip switch connecting device for shaft vibration protection of steam turbine

Abstract

The utility model provides a kind of tripping switch connecting device of turbine shaft vibration protection, belong to electrical equipment technical field, including, mounting bracket and jumper switch, multiple jumper switches are fixedly arranged at the outer wall of mounting bracket, jumper adjustment component, jumper adjustment component is used to adjust the distance between jumper, applied to jumper switch of different size. Through the horizontal flexible positioning of integrated slide rail and moving platform to realize jumper adjustment component, the vertical height adjustment ability of convenient provided by the lifting platform supported by limiting rod and supporting spring is combined, and the spacing of two drive blocks and jumper main body thereon is accurately controlled by rotating knob, driving bidirectional screw through driving bevel gear, driven bevel gear, so that jumper distance adjustment becomes efficient, intuitive and stable, and the continuity and reliability of electrical connection during adjustment are ensured by elastic cable.

Description

Technical Field

[0001] This utility model belongs to the field of electrical equipment technology, and specifically relates to a trip switch connection device for turbine shaft vibration protection. Background Technology

[0002] In the monitoring and protection systems of large rotating machinery such as steam turbine generator sets, shaft vibration protection is a crucial safety component. The trip switch, as the final actuator of the protection logic, needs to be connected to the signal output terminal of the monitoring system (usually in the form of a jumper) via a reliable connection device. Currently, common connection methods mostly employ fixed wiring or simple adapter terminals. These existing technical solutions have revealed several significant shortcomings in practical applications.

[0003] First, there is a lack of versatility and adaptability. Different manufacturers or models of trip switches may have different terminal block sizes and spacings. Fixed connection devices are often designed only for specific switches; if the device model is changed, the entire connection device may need to be replaced, increasing spare parts costs and storage management difficulties. Second, adjustment is inconvenient and inaccurate. Some devices with preliminary adjustment functions usually require operators to manually tighten or loosen multiple screws to adjust their positions individually. This process is cumbersome and time-consuming, and difficult to operate in confined spaces. It is difficult to ensure the synchronicity and accuracy of the adjustment of multiple jumper spacings, easily leading to false alarms or protection failure due to poor contact. Third, reliability and stability are insufficient. Simple mechanical connections are prone to screw loosening and terminal displacement under long-term vibration, resulting in increased contact resistance or even open circuits, directly affecting the reliability of the protection circuit. Furthermore, existing devices lack effective management of connecting cables during installation and maintenance. Cables may be damaged due to repeated bending or stress, affecting insulation performance and service life.

[0004] Therefore, there is an urgent need for a trip switch connection device that can quickly and accurately adapt to trip switches of different specifications, while possessing high reliability and convenient maintenance, in order to improve the overall stability and maintenance efficiency of the shaft vibration protection system. Utility Model Content

[0005] The purpose of this utility model is to provide a trip switch connection device for turbine shaft vibration protection, which aims to solve the problems mentioned in the background art.

[0006] A trip switch connection device for turbine shaft vibration protection includes,

[0007] Mounting bracket and jumper switches, with multiple jumper switches fixedly mounted on the outer wall of the mounting bracket;

[0008] A jumper adjustment assembly is located on the outer wall of the mounting bracket. The jumper adjustment assembly is used to adjust the distance between jumpers and is applied to jumper switches of different sizes.

[0009] Furthermore, the jumper adjustment assembly includes a slide rail, a moving platform, a lifting platform, a limit frame, a limit shell, a drive block, an elastic cable, and a jumper body.

[0010] Furthermore, the slide rail is fixedly installed on the outer wall of the mounting frame, the moving platform is slidably sleeved on the outer wall of the slide rail, the lifting platform is slidably embedded in the top of the inner wall of the moving platform, the limiting frame is fixedly installed on the top of the outer wall of the lifting platform, the limiting shell is fixedly installed on the outer wall of one end of the limiting frame, two sets of driving blocks are respectively embedded in the inner wall of the limiting shell, the jumper body is embedded in the opening at one end of the driving block, and the two ends of the elastic cable are electrically connected to the jumper body respectively.

[0011] Furthermore, a knob is rotatably embedded in the top opening of the outer wall of the limiting frame, and an active bevel gear is fixedly installed at the center of the bottom outer wall of the knob.

[0012] Furthermore, a bidirectional lead screw is rotatably embedded in the inner wall of the limiting shell, and a driven bevel gear is fixedly provided at one end of the bidirectional lead screw. The driving bevel gear and the driven bevel gear are meshed and connected. One end of the bidirectional lead screw is threaded to the opening of the inner wall of the drive block.

[0013] Furthermore, a limiting rod is embedded at the center of the bottom of the inner wall of the moving platform, and the top end of the limiting rod is slidably inserted into the opening of the inner wall of the lifting platform. A support spring is sleeved on the outer wall of the limiting rod, one end of the support spring is fixedly set at the bottom of the outer wall of the lifting platform, and the bottom end of the support spring is fixedly set at the bottom of the inner wall of the moving platform.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] The integrated slide rail and moving platform enable flexible horizontal positioning of the jumper adjustment assembly, while the lifting platform supported by limit rods and support springs provides convenient vertical height adjustment. By rotating a knob, a bidirectional lead screw is driven through an active bevel gear and a driven bevel gear, precisely controlling the distance between the two drive blocks and their respective jumper bodies. This design makes jumper distance adjustment efficient, intuitive, and stable, while the flexible cable ensures the continuity and reliability of the electrical connection during adjustment. The entire device is compact and easy to operate, significantly improving the adaptability of the jumper switch connection device to jumper switches of different sizes and enhancing installation and maintenance efficiency. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a perspective view of the present utility model;

[0018] Figure 2 This is a perspective view of the slide rail of this utility model;

[0019] Figure 3 This is a perspective view of the lifting platform of this utility model.

[0020] In the diagram: 1. Mounting bracket; 2. Jumper switch; 3. Slide rail; 4. Moving platform; 5. Lifting platform; 6. Limiting bracket; 7. Knob; 8. Driving bevel gear; 9. Limiting housing; 10. Two-way lead screw; 11. Drive block; 12. Driven bevel gear; 13. Flexible cable; 14. Jumper body; 15. Limiting rod; 16. Support spring. Detailed Implementation

[0021] 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Please see Figure 1-3 The technical solution provided in this embodiment is as follows:

[0025] A trip switch connection device for turbine shaft vibration protection includes,

[0026] Mounting bracket 1 and jumper switch 2, with multiple jumper switches 2 fixedly mounted on the outer wall of mounting bracket 1;

[0027] A jumper adjustment assembly is located on the outer wall of the mounting bracket 1. The jumper adjustment assembly is used to adjust the distance between jumpers and is applied to jumper switches 2 of different sizes.

[0028] In a specific embodiment of this utility model,

[0029] Specifically, the jumper adjustment assembly includes a slide rail 3, a moving platform 4, a lifting platform 5, a limit frame 6, a limit shell 9, a drive block 11, an elastic cable 13, and a jumper body 14.

[0030] In a specific embodiment of this utility model, the horizontal position of the jumper adjustment assembly is adjusted by sliding the movable platform 4 on the slide rail 3. At the same time, the lifting platform 5 slides within the movable platform 4 and is vertically adjusted by the support of the limiting rod 15 and the supporting spring 16. When it is necessary to adjust the distance between jumpers, the knob 7 on the limiting frame 6 is rotated. The knob 7 drives the active bevel gear 8 to rotate. The active bevel gear 8 meshes with the driven bevel gear 12 and drives the bidirectional lead screw 10 to rotate within the limiting shell 9. The rotation of the bidirectional lead screw 10 causes the two drive blocks 11 to move towards or away from each other within the limiting shell 9, thereby driving the jumper body 14 embedded in the drive block 11 to move relative to each other. The elastic cable 13 extends and retracts with the movement of the jumper body 14 and maintains electrical connection, ultimately realizing the flexible adjustment of the distance between the jumper bodies 14 to adapt to the connection requirements of jumper switches 2 of different sizes on the mounting frame 1.

[0031] Specifically, the slide rail 3 is fixedly installed on the outer wall of the mounting frame 1, the moving platform 4 is slidably sleeved on the outer wall of the slide rail 3, the lifting platform 5 is slidably embedded in the top of the inner wall of the moving platform 4, the limiting frame 6 is fixedly installed on the top of the outer wall of the lifting platform 5, the limiting shell 9 is fixedly installed on the outer wall of one end of the limiting frame 6, two sets of drive blocks 11 are respectively embedded in the inner wall of the limiting shell 9, the jumper body 14 is embedded in the opening at one end of the drive block 11, and the two ends of the elastic cable 13 are electrically connected to the jumper body 14 respectively.

[0032] In a specific embodiment of this utility model, the two ends of the elastic cable 13 are electrically connected to the jumper body 14, which can ensure that the distance of the jumper body 14 can be adjusted.

[0033] Specifically, a knob 7 is rotatably embedded in the top opening of the outer wall of the limit frame 6, and an active bevel gear 8 is fixedly installed at the center of the bottom outer wall of the knob 7.

[0034] In a specific embodiment of this utility model, an active bevel gear 8 is fixedly provided at the center of the bottom outer wall of the knob 7 to ensure the stability of the transmission.

[0035] Specifically, a bidirectional lead screw 10 is rotatably embedded in the inner wall of the limiting shell 9, and a driven bevel gear 12 is fixedly provided at one end of the bidirectional lead screw 10. The driving bevel gear 8 and the driven bevel gear 12 are meshed and connected for transmission. One end of the bidirectional lead screw 10 is threaded to the opening of the inner wall of the drive block 11.

[0036] In a specific embodiment of this utility model, one end of the bidirectional lead screw 10 is threaded to the opening on the inner wall of the drive block 11, which can ensure transmission accuracy.

[0037] Specifically, a limiting rod 15 is embedded at the center of the bottom of the inner wall of the moving platform 4, and the top end of the limiting rod 15 is slidably inserted into the opening of the inner wall of the lifting platform 5. A support spring 16 is sleeved on the outer wall of the limiting rod 15. One end of the support spring 16 is fixedly set at the bottom of the outer wall of the lifting platform 5, and the bottom end of the support spring 16 is fixedly set at the bottom of the inner wall of the moving platform 4.

[0038] In a specific embodiment of this utility model, the bottom end of the support spring 16 is fixedly disposed at the bottom of the inner wall of the moving platform 4, which can ensure stable support for the lifting platform 5.

[0039] Working principle:

[0040] The horizontal position of the jumper adjustment assembly is adjusted by sliding the movable platform 4 on the slide rail 3. At the same time, the lifting platform 5 slides within the movable platform 4 and is vertically adjusted by the support of the limit rod 15 and the support spring 16. When it is necessary to adjust the distance between jumpers, the knob 7 on the limit frame 6 is turned. The knob 7 drives the active bevel gear 8 to rotate. The active bevel gear 8 meshes with the driven bevel gear 12 and drives the bidirectional lead screw 10 to rotate within the limit housing 9. The rotation of the bidirectional lead screw 10 causes the two drive blocks 11 to move towards or away from each other within the limit housing 9, thereby driving the jumper body 14 embedded in the drive block 11 to move relative to each other. The elastic cable 13 extends and retracts with the movement of the jumper body 14 and maintains electrical connection, ultimately realizing the flexible adjustment of the distance between the jumper bodies 14 to adapt to the connection requirements of jumper switches 2 of different sizes on the mounting frame 1.

[0041] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A trip switch connection device for turbine shaft vibration protection, characterized in that, include, Mounting bracket (1) and jumper switch (2), wherein multiple jumper switches (2) are fixedly mounted on the outer wall of mounting bracket (1); A jumper adjustment assembly is located on the outer wall of the mounting bracket (1). The jumper adjustment assembly is used to adjust the distance between jumpers and is applied to jumper switches (2) of different sizes.

2. The turbine trip switch connection device for turbine shaft vibration protection according to claim 1, characterized in that, The jumper adjustment assembly includes a slide rail (3), a moving platform (4), a lifting platform (5), a limiting frame (6), a limiting shell (9), a drive block (11), an elastic cable (13), and a jumper body (14).

3. The turbine trip switch connection device for turbine shaft vibration protection according to claim 2, characterized in that, The slide rail (3) is fixedly installed on the outer wall of the mounting frame (1), the moving platform (4) is slidably sleeved on the outer wall of the slide rail (3), the lifting platform (5) is slidably embedded in the top of the inner wall of the moving platform (4), the limiting frame (6) is fixedly installed on the top of the outer wall of the lifting platform (5), the limiting shell (9) is fixedly installed on the outer wall of one end of the limiting frame (6), two sets of driving blocks (11) are respectively embedded in the inner wall of the limiting shell (9), the jumper body (14) is embedded in the opening of one end of the driving block (11), and the two ends of the elastic cable (13) are electrically connected to the jumper body (14).

4. The turbine trip switch connection device for turbine shaft vibration protection according to claim 3, characterized in that, The top opening of the outer wall of the limiting frame (6) is fitted with a knob (7), and a drive bevel gear (8) is fixedly installed at the center of the bottom outer wall of the knob (7).

5. The turbine trip switch connection device for turbine shaft vibration protection according to claim 4, characterized in that, The inner wall of the limiting shell (9) is rotatably fitted with a bidirectional lead screw (10), and a driven bevel gear (12) is fixedly provided at one end of the bidirectional lead screw (10). The driving bevel gear (8) and the driven bevel gear (12) are meshed and connected. One end of the bidirectional lead screw (10) is threaded to the opening of the inner wall of the drive block (11).

6. The turbine trip switch connection device for turbine shaft vibration protection according to claim 5, characterized in that, A limiting rod (15) is embedded at the center of the bottom of the inner wall of the moving platform (4), and the top end of the limiting rod (15) is slidably inserted into the opening of the inner wall of the lifting platform (5). A support spring (16) is sleeved on the outer wall of the limiting rod (15). One end of the support spring (16) is fixedly set at the bottom of the outer wall of the lifting platform (5), and the bottom end of the support spring (16) is fixedly set at the bottom of the inner wall of the moving platform (4).

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