Power station expansion joint displacement monitoring device

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By designing a power station telescopic joint displacement monitoring device containing induction components and measuring mechanisms, the problem that the prior art cannot monitor the radial displacement of the telescopic joint in real time is solved, and the comprehensive monitoring of the telescopic joint displacement is achieved, and the stability and safety of the equipment are improved.

CN222544665UActive Publication Date: 2025-02-28SHUIFA ELECTRIC POWER ENERGY (ILI) CO LTD

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Patent Information

Application Number: CN202421245875.3
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2024-05-31
Publication Date: 2025-02-28
Estimated Expiration: 2034-05-31

AI Technical Summary

Technical Problem

The existing power station telescopic joint displacement monitoring device can only detect lateral displacement and cannot monitor the displacement changes of telescopic joints in the radial direction in real time, resulting in the impact of the stability of the connecting pipeline and the equipment performance life of the equipment.

Method used

A power station telescopic joint displacement monitoring device including a flange, telescopic body and monitoring device is designed. By providing two sets of induction components and measuring mechanisms, the lateral and radial displacement changes of telescopic joints can be detected in real time.

Benefits of technology

It realizes rapid monitoring of the lateral and radial displacement of the telescopic joints, ensures the safety of connection operation, promptly detects problems, and improves the stability and life of the equipment.

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Abstract

The utility model discloses a power station expansion joint displacement monitoring device, which comprises a flange and an expansion body, and is provided with a monitoring device, if a supporting block moves transversely, the supporting block drives a connecting block to move when moving, the connecting block moves to push a movable block to move, and the movable block moves to extrude a spring I; the moving force of the movable block is transmitted to the pressure sensor through the first spring, the displacement distance is detected according to the pressure, if the supporting block moves in the radial direction, the measuring block is driven to move, the measuring block moves to drive the measuring plate to move, the measuring plate moves to push the movable block to move, and the movable block drives the collision block to move. The collision block collides with the collision sensor, the moving distance is judged according to the collision sensor, through the arrangement, transverse displacement and radial displacement of the telescopic joint can be rapidly monitored, it is guaranteed that accidents do not occur in the connecting operation process, problems can be found in time, and safety is improved.

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Description

Technical Field

[0001] The utility model relates to the technical field of power stations, in particular to a displacement monitoring device for expansion joints of power stations. Background Art

[0002] Gas Insulated Substation (GIS) is the core equipment of substation construction. It has the characteristics of strong anti-interference ability and low maintenance during operation. It is widely used in substations of various voltage levels from 110 to 1100 kV in the national power grid. The monitoring of the expansion and contraction of GIS expansion joints is an important project in the daily operation and maintenance of GIS equipment. The change of displacement of GIS expansion joints during operation reflects the working conditions and operating status of GIS equipment.

[0003] The current announcement number CN218916276U discloses "A substation expansion joint displacement monitoring device", in which the first adapter bracket is fixedly connected to the flange at one end of the substation expansion joint, and the second adapter bracket is fixedly connected to the flange at the other end of the substation expansion joint; the adapter seat is fixedly connected to the first adapter bracket, and the main unit assembly includes a main unit shell, and the main unit shell is fixedly connected to the second adapter bracket; the displacement ranging sensor is arranged inside the main unit shell, and the ranging end of the displacement ranging sensor extends from the side of the main unit shell, and the ranging end of the displacement ranging sensor extending from the side of the main unit shell is fixedly connected to one end of the first rod body, and the other end of the first rod body is connected to one end of the second rod body by a ball joint; the other end of the second rod body is fixedly connected to the adapter seat; the position of the adapter seat and the main unit assembly changes with the displacement of the substation expansion joint, so that the automatic measurement of the displacement change of the substation expansion joint can be realized, the measurement accuracy is high, the accuracy of the data is guaranteed, and it is convenient for later data processing and reuse.

[0004] Although the above monitoring device has certain advantages for monitoring the displacement of the expansion joint, it still has certain disadvantages:

[0005] When using the above-mentioned monitoring device, only the lateral displacement of the expansion joint can be detected. During use, the expansion joint may also move in the radial direction of the pipeline due to pressure changes or temperature changes of the fluid inside the pipeline. Therefore, if it is not monitored in time, it is easy to affect the stability of the connected pipeline and the performance and life of the connected equipment. Utility Model Content

[0006] 1. Technical issues to be resolved

[0007] In view of the deficiencies in the prior art, the utility model provides a displacement monitoring device for a power station expansion joint, which solves the above-mentioned problems.

[0008] (II) Technical solution

[0009] To achieve the above objectives, the utility model is implemented through the following technical solutions: a power station expansion joint displacement monitoring device, including a flange, a expansion body and a monitoring device, the flange is provided with two groups, and is respectively fixed to the front end and the rear end of the expansion body, the monitoring device is provided with two groups, and is respectively arranged at the top and the bottom of the flange, the monitoring device includes a fixed block, a support block, a monitoring block, a connecting block, a fixed groove, a movable block, a spring, a pressure sensor, a limit block and a measuring mechanism, the fixed block is fixed to the top of the flange at the rear end of the expansion body, the support block is fixed to the front end of the fixed block, and extends forward to the interior of the monitoring block, and the monitoring block is fixed to the flange at the front end of the expansion body. The top end, the connecting block, the fixed groove one, the movable block, the spring one, the pressure sensor and the limit block are a group of sensing components, and the sensing components are provided with two groups and are arranged symmetrically with the monitoring block as the center. The connecting block is fixed to the front side of the right end of the supporting block and extends to the right to the inside of the fixed groove one. The fixed groove one is opened in the inside of the monitoring block. The movable block is arranged in the inside of the fixed groove one. The spring one is fixed to the right end of the movable block. The pressure sensor is installed at the right end of the inside of the fixed groove one. The limit blocks are provided with two groups and are respectively arranged at the internal top and internal bottom of the fixed groove one. The measuring mechanism is provided with two groups and are respectively arranged at the internal top and internal bottom of the monitoring block.

[0010] Preferably, the measuring mechanism includes a sliding groove, a measuring block, a second fixed groove, a measuring plate, a measuring groove, a round rod, a movable rod, a second spring, a collision block and a collision sensor, the sliding groove is arranged at the top of the support block, the measuring block is arranged inside the sliding groove and extends upward to the inside of the second fixed groove, the second fixed groove is opened at the inner top of the monitoring block, the measuring plate is fixed to the top of the measuring block, the measuring groove, the round rod, the movable rod, the second spring, the collision block and the collision sensor form a group of collision components, and the collision components are provided with two groups and are symmetrically arranged with the inside of the second fixed groove as the center, the measuring groove is fixed to the inner left end of the second fixed groove, the round rod is fixed to the inner left end of the measuring groove, the movable rod is arranged on the outer side of the round rod and extends rightward to the right end of the measuring groove, the second spring is arranged on the outer side of the round rod, the collision block is fixed to the left side of the top of the movable rod, and the collision sensor is installed at the inner left end of the measuring groove.

[0011] Preferably, a notch is provided in the middle of the monitoring block, and the supporting block is arranged at the front end of the monitoring block through the notch, so that timely monitoring can be performed when the supporting block moves.

[0012] Preferably, the inner wall of the sliding groove is smoothly arranged and fits with the outer bottom end of the measuring block. This arrangement ensures that the measuring block will not be moved when the supporting block moves left and right.

[0013] Preferably, the left end and the right end of the measuring plate and the right end of the movable rod are both arranged in an arc shape, and this arrangement enables the measuring plate to better push the movable rod to move.

[0014] Preferably, a notch is provided at the left end of the movable rod, and this arrangement enables the movable rod to move along the round rod.

[0015] Preferably, the round rod, the movable rod, the second spring, the collision block and the collision sensor are provided in five groups and are arranged equidistantly inside the measuring slot. This arrangement enables the radial movement distance to be measured more accurately.

[0016] (III) Beneficial effects

[0017] The utility model provides a displacement monitoring device for a power station expansion joint. It has the following beneficial effects: by setting up a monitoring device, if the support block moves laterally, the support block drives the connection block to move when it moves, the connection block moves and drives the movable block to move, the movable block moves to squeeze the spring 1, the force of the movable block moving is transmitted to the pressure sensor through the spring 1, and the displacement distance is detected according to the pressure size, if the support block moves radially, it drives the measuring block to move, the measuring block moves and drives the measuring plate to move, the measuring plate moves and drives the movable block to move, so that the movable block drives the collision block to move, the collision block collides with the collision sensor, and the moving distance is determined according to the collision sensor, through this setting, the lateral displacement and radial displacement of the expansion joint can be quickly monitored to ensure that no accidents occur during the connection operation process, problems can be discovered in time, and safety is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a top view of the monitoring device structure in the utility model;

[0020] Figure 3 This is a front view of the monitoring device structure in the utility model;

[0021] Figure 4 This is a front view of the measuring mechanism structure in the utility model;

[0022] Figure 5 For the utility model Figure 4 A partial enlarged view of area A.

[0023] In the figure: flange 1, telescopic body 2, monitoring device 3, fixed block 31, supporting block 32, monitoring block 33, connecting block 34, fixed slot 1 35, movable block 36, spring 1 37, pressure sensor 38, limit block 39, measuring mechanism 310, sliding slot 3101, measuring block 3102, fixed slot 2 3103, measuring plate 3104, measuring slot 3105, round rod 3106, movable rod 3107, spring 2 3108, collision block 3109, collision sensor 31010. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-3 The utility model provides a technical solution for a displacement monitoring device for a power station expansion joint: a displacement monitoring device for a power station expansion joint, comprising a flange 1, a expansion body 2 and a monitoring device 3, wherein the flange 1 is provided with two groups and respectively fixed at the front end and the rear end of the expansion body 2, the monitoring device 3 is provided with two groups and respectively arranged at the top end and the bottom end of the flange 1, the monitoring device 3 comprises a fixed block 31, a support block 32, a monitoring block 33, a connecting block 34, a fixed groove 35, a movable block 36, a spring 37, a pressure sensor 38, a limit block 39 and a measuring mechanism 310, the fixed block 31 is fixed to the top end of the flange 1 at the rear end of the expansion body 2, the support block 32 is fixed to the front end of the fixed block 31, and extends forward to the inside of the monitoring block 33, the monitoring block 33 is fixed to the top end of the flange 1 at the front end of the expansion body 2, the connecting block 34, the fixed groove 35, the movable block 36, the spring 37, the pressure sensor 38, the limit block 39 and the measuring mechanism 310 The force sensor 38 and the limit block 39 are a group of sensing components, and the sensing components are provided with two groups and are symmetrically arranged with the monitoring block 33 as the center. The connecting block 34 is fixed to the front side of the right end of the supporting block 32 and extends to the right to the inside of the fixed groove 35. The fixed groove 35 is opened in the inside of the monitoring block 33. The movable block 36 is arranged in the inside of the fixed groove 35. The spring 37 is fixed to the right end of the movable block 36. The pressure sensor 38 is installed at the right end of the inside of the fixed groove 35. The limit block 39 is provided with two groups and is respectively arranged at the internal top and internal bottom of the fixed groove 35. The measuring mechanism 310 is provided with two groups and is respectively arranged at the internal top and internal bottom of the monitoring block 33. A notch is provided in the middle of the monitoring block 33, and the supporting block 32 is arranged at the front end of the monitoring block 33 through the notch. Through this arrangement, timely monitoring can be carried out when the supporting block 32 moves.

[0026] See also Figure 4 and Figure 5 The utility model provides a technical solution for a displacement monitoring device for a power station expansion joint: a displacement monitoring device for a power station expansion joint, wherein a measuring mechanism 310 comprises a sliding groove 3101, a measuring block 3102, a second fixed groove 3103, a measuring plate 3104, a measuring groove 3105, a round rod 3106, a movable rod 3107, a second spring 3108, a collision block 3109 and a collision sensor 31010, wherein the sliding groove 3101 is arranged at the top of the supporting block 32, and the measuring block 3102 is arranged inside the sliding groove 3101 and extends upward to the fixed groove The second fixed groove 3103 is provided at the top of the monitoring block 33, the measuring plate 3104 is fixed to the top of the measuring block 3102, the measuring groove 3105, the round rod 3106, the movable rod 3107, the second spring 3108, the collision block 3109 and the collision sensor 31010 form a collision component, and the collision component is provided with two groups and is symmetrically arranged with the inside of the second fixed groove 3103 as the center, the measuring groove 3105 is fixed to the left end of the inside of the second fixed groove 3103, the round rod 3106 is fixed to the measuring groove 3105 The movable rod 3107 is arranged on the outer side of the round rod 3106 and extends rightward to the right end of the measuring groove 3105. The spring 2 3108 is arranged on the outer side of the round rod 3106. The collision block 3109 is fixed to the left side of the top of the movable rod 3107. The collision sensor 31010 is installed on the inner left end of the measuring groove 3105. The inner wall of the sliding groove 3101 is smoothly arranged and fits with the outer bottom end of the measuring block 3102. Through this arrangement, when the support block 32 moves left and right, it will not drive the measuring block to move. The left side of the measuring plate 3104 The left end of the movable rod 3107 is provided with a notch, and the movable rod 3107 can be moved along the round rod 3106. The round rod 3106, the movable rod 3107, the spring 2 3108, the collision block 3109 and the collision sensor 31010 are each provided with five groups, and are equidistantly arranged inside the measuring slot 3105. This arrangement makes it possible to measure the radial movement distance more accurately.

[0027] Here’s how it works:

[0028] First, before use, install the telescopic body 2 between two pipes through the flange 1 for connection;

[0029] Second, when in use, if the support block 32 drives the connecting block 34 to move, the connecting block 34 moves and pushes the movable block 36 to move, the movable block 36 squeezes the spring 1 37, and the spring 1 37 transmits the squeezing force to the pressure sensor 38. According to the value of the pressure sensor 38, it can be judged that the telescopic body 2 has a lateral displacement, and the danger should be eliminated in time;

[0030] Third, if the support block 32 drives the measuring block 3102 to move, the measuring block 3102 drives the measuring plate 3104 to move when it moves, and the measuring plate 3104 squeezes the movable rod 3107 when it moves, so that the movable rod 3107 moves to the left along the round rod 3106, and the movable rod 3107 drives the collision block 3109 to move when it moves, and the collision block 3109 collides with the collision sensor 31010 when it moves, it can be judged based on the data of the collision sensor 31010 that the telescopic body 2 has moved radially, and the danger should be eliminated in time.

[0031] The control method of the present invention is to control by manually starting and closing the switch. The wiring diagram of the power element and the provision of power supply are common knowledge in the field, and the present invention is mainly used to protect mechanical devices, so the present invention will not explain the control method and wiring arrangement in detail.

[0032] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A power station expansion joint displacement monitoring device, comprising a flange (1) and a expansion body (2), wherein the flange (1) is provided with two groups and is respectively fixed to the front end and the rear end of the expansion body (2); Features: The invention also comprises a monitoring device (3), wherein the monitoring device (3) is provided with two groups and is respectively arranged at the top end and the bottom end of the flange (1), wherein the monitoring device (3) comprises a fixed block (31), a support block (32), a monitoring block (33), a connecting block (34), a fixed groove (35), a movable block (36), a spring (37), a pressure sensor (38), a limit block (39) and a measuring mechanism (310), wherein the fixed block (31) is fixed to the top end of the flange (1) at the rear end of the telescopic body (2), the support block (32) is fixed to the front end of the fixed block (31) and extends forward to the inside of the monitoring block (33), and the monitoring block (33) is fixed to the top end of the flange (1) at the front end of the telescopic body (2), and the connecting block (34), the fixed groove (35), the movable block (36), the spring (37) , a pressure sensor (38) and a limit block (39) form a group of sensing components, and the sensing components are provided with two groups and are arranged symmetrically with the monitoring block (33) as the center. The connecting block (34) is fixed to the front side of the right end of the supporting block (32) and extends rightward to the inside of the fixed groove (35). The fixed groove (35) is opened inside the monitoring block (33). The movable block (36) is arranged inside the fixed groove (35). The spring (37) is fixed to the right end of the movable block (36). The pressure sensor (38) is installed at the right end inside the fixed groove (35). The limit blocks (39) are provided with two groups and are respectively arranged at the internal top end and the internal bottom end of the fixed groove (35). The measuring mechanism (310) is provided with two groups and is respectively arranged at the internal top end and the internal bottom end of the monitoring block (33).

2. A power station expansion joint displacement monitoring device according to claim 1, characterized in that: The measuring mechanism (310) comprises a sliding groove (3101), a measuring block (3102), a second fixed groove (3103), a measuring plate (3104), a measuring groove (3105), a round rod (3106), a movable rod (3107), a second spring (3108), a collision block (3109) and a collision sensor (31010), wherein the sliding groove (3101) is arranged at the top end of the supporting block (32), the measuring block (3102) is arranged inside the sliding groove (3101) and extends upward to the inside of the second fixed groove (3103), the second fixed groove (3103) is opened at the top end of the inner part of the monitoring block (33), the measuring plate (3104) is fixed to the top end of the measuring block (3102), the measuring groove (3105), the round rod (3106), the movable rod (3107), the second spring (3108), a collision block (3109) and a collision sensor (31010), wherein the sliding groove (3101) is arranged at the top end of the supporting block (32), the measuring block (3102) is arranged inside the sliding groove (3101) and extends upward to the inside of the second fixed groove (3103), the second fixed groove (3103) is opened at the top end of the inner part of the monitoring block (33), the measuring plate (3104) is fixed to the top end of the measuring block (3102), the measuring groove (3105), the round rod (3106), the movable rod (3107) and the collision sensor (31010) are arranged at the top end of the measuring groove (3101), the measuring block (3102) is arranged at the top end of the measuring block (3102), the measuring groove (3105), the round rod (3106), the movable rod (3107) and the collision sensor (31010) are arranged at the top end 107), spring two (3108), collision block (3109) and collision sensor (31010) form a collision component, and the collision component is provided with two groups and is arranged symmetrically with the interior of the fixed groove two (3103) as the center, the measuring groove (3105) is fixed to the inner left end of the fixed groove two (3103), the round rod (3106) is fixed to the inner left end of the measuring groove (3105), the movable rod (3107) is arranged on the outer side of the round rod (3106) and extends rightward to the right end of the measuring groove (3105), the spring two (3108) is arranged on the outer side of the round rod (3106), the collision block (3109) is fixed to the top left side of the movable rod (3107), and the collision sensor (31010) is installed at the inner left end of the measuring groove (3105).

3. A power station expansion joint displacement monitoring device according to claim 1, characterized in that: A notch is provided in the middle of the monitoring block (33), and the supporting block (32) passes through the notch and is arranged at the front end of the monitoring block (33).

4. A power station expansion joint displacement monitoring device according to claim 2, characterized in that: The inner wall of the sliding groove (3101) is smoothly arranged and fits with the outer bottom end of the measuring block (3102).

5. The power station expansion joint displacement monitoring device according to claim 2, characterized in that: The left and right ends of the measuring plate (3104) and the right end of the movable rod (3107) are both arranged in an arc shape.

6. A power station expansion joint displacement monitoring device according to claim 2, characterized in that: The left end of the movable rod (3107) is provided with a notch.

7. A power station expansion joint displacement monitoring device according to claim 2, characterized in that: The round rod (3106), the movable rod (3107), the second spring (3108), the collision block (3109) and the collision sensor (31010) are each provided in five groups and are arranged equidistantly inside the measuring slot (3105).