GIS expansion joint deformation on-line monitoring device

Abstract

According to the GIS expansion joint deformation online monitoring device provided by the invention, the displacement sensor, the waterproof shell, the waterproof key, the clamp and the thumb antenna are matched, and the design of the structure and the clamping mode of the whole waterproof shell is provided, so that online monitoring of expansion joint deformation becomes possible, and the problem of high cost during manual inspection can be greatly reduced; meanwhile, the problems of poor adaptability and low precision of a mechanical monitoring structure can be solved; the whole expansion joint deformation monitoring device is fixed at a single end, and can deal with the structural change of the expansion joint in the vertical direction caused by the settlement of the GIS equipment, and the situation that the existing double-end fixed sensor is easy to damage when dealing with the GIS settlement condition can be dealt with.

Description

Technical Field

[0001] The invention belongs to the technical field of GIS expansion joint deformation monitoring, and relates to an online monitoring device for GIS expansion joint deformation. Background Art

[0002] Expansion joints for GIS equipment, also known as expansion joints, compensators, or expansion joints, are primarily used to absorb installation errors caused by uneven foundations or out-of-tolerance mounting hole spacing. These joints connect GIS pipelines using full bolts, creating a single unit with a certain degree of displacement, facilitating installation and withstanding axial, radial, and angular pressures. This allows for adjustments to be made to the pipeline's dimensions during installation and maintenance. This not only improves efficiency but also provides protection for pumps, valves, and other pipeline equipment.

[0003] Currently, GIS expansion joint monitoring methods are primarily divided into two categories: manual inspection and mechanical structure monitoring. While feasible, manual inspection carries significant labor costs and can lead to inaccurate monitoring data due to human factors, potentially posing safety risks to GIS equipment. Specifically, significant deviations in manual inspection data can pose a threat to the stable operation of GIS equipment.

[0004] On the other hand, mechanical structure monitoring typically relies on mechanical pointers and color areas to visually display the deformation status of the expansion joint. The limitation of this method is that it can only determine whether the deformation of the expansion joint is within the safe range, but cannot accurately measure the current deformation, resulting in relatively low monitoring accuracy. In addition, the design of the mechanical structure needs to be customized according to the different models and installation locations of the expansion joint, which limits its flexibility and narrows its scope of application. It is worth noting that mechanical structure monitoring still essentially requires manual inspection, that is, using color indicators to simplify the manual visual inspection process of the expansion joint length, so as to conduct more convenient inspection operations. Summary of the Invention

[0005] In response to the problems existing in the prior art, the present invention provides an online monitoring device for GIS expansion joint deformation, which has a wide range of applications, high precision, and wireless data transmission. The monitoring device makes the monitoring of expansion joint deformation more accurate and stable, thereby ensuring the safety of GIS equipment use.

[0006] The present invention is achieved through the following technical solutions: An online monitoring device for deformation of an expansion joint, comprising: Displacement sensor, waterproof housing, waterproof button, clamp, thumb antenna, locking handle and lifting ring; The end of the displacement sensor is installed in a waterproof housing, the thumb antenna is fixed on the surface of the waterproof housing, and the thumb antenna is in communication connection with the displacement sensor; a waterproof button is installed on the surface of the waterproof housing; the waterproof button is used to control the sensor; One end of the clamp is fixedly connected to the waterproof housing by a fastening screw; the locking handle is provided at the other end of the clamp; the displacement sensor is a retractable structure; When in use, the detection end of the displacement sensor contacts one end of the flange on the telescopic joint, and the clamp is fixed to the other end of the flange on the telescopic joint by rotating the locking handle.

[0007] Preferably, the displacement sensor includes a sensor head, a sensor body and a post-stage circuit; The sensor body and the subsequent circuit are installed in a waterproof housing, and the sensor head is exposed outside the waterproof housing. One end of the sensor body is connected to the sensor head, and the other end of the sensor body is connected to the subsequent circuit; during detection, the sensor head contacts the flange on the telescopic joint, and the sensor head is a telescopic length-adjustable structure.

[0008] Preferably, the post-stage circuit includes a power supply module, a signal conditioning module, a main control module and a wireless transmission module; The power module is used to provide power and control power management; The signal conditioning module is used to process and condition the length data monitored by the displacement sensor and transmit it to the main control module; The main control module converts the collected length data into a data format for wireless communication and transmits the data to the wireless transmission module; The wireless sending module sends the wireless data transmitted from the main control module to the server using the thumb antenna.

[0009] Preferably, the main control module sets a sleep cycle according to the usage of the expansion joint deformation online monitoring device, controls the expansion joint deformation online monitoring device to enter the ultra-low power consumption mode when no data is sent, wakes up the entire monitoring device when data is sent, and continues to enter the ultra-low power consumption mode after the data is sent; The main control module changes the sleep cycle of the displacement sensor of the online monitoring device for the expansion joint deformation from the host computer through the control instructions sent by the monitoring server, providing changeable configurations for different users.

[0010] Preferably, the waterproof buttons include a power button, a reset button and a work button; The power button is used to control the power on of the displacement sensor. The reset button is used to set the current length of the sensor to the monitoring zero point. The work button is used to put the device into low-power sleep mode and wake up and send sensor length data according to the preset period. Preferably, a hanging ring is provided on the waterproof housing, and the hanging ring is fixedly mounted on the waterproof housing.

[0011] Preferably, a steel wire rope is further included, one end of the steel wire rope is connected to the lifting ring on the waterproof shell, and the other end of the steel wire rope is fixed to the cross bar on the flange.

[0012] Preferably, an anti-slip pad is provided at one end of the locking handle close to the flange.

[0013] Preferably, the waterproof housing includes a top cover and a base, and the top cover and the base are fixedly mounted by a first fastening screw; the thumb antenna is fixed to the upper surface of the waterproof housing by a second fastening nut.

[0014] A GIS device based on an online monitoring device for deformation of an expansion joint, comprising: When in use, the head of the displacement sensor of the expansion joint deformation online monitoring device contacts one end of the flange on the expansion joint of the GIS equipment, and the clamp is fixed to the other end of the flange on the expansion joint of the GIS equipment by rotating the locking handle.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects: The online monitoring device for deformation of the expansion joint of the present invention utilizes a displacement sensor, a waterproof housing, a waterproof button, a clamp, and a thumb antenna, and proposes a design of the structure and clamping method of the overall waterproof housing, which makes it possible to monitor the deformation of the expansion joint online, greatly reducing the high cost problem during manual inspection, and solving the problems of poor adaptability and low accuracy of the mechanical monitoring structure; the expansion joint deformation monitoring device is fixed at a single end as a whole, which can cope with the structural changes of the expansion joint in the vertical direction caused by the settlement of the GIS equipment. The existing double-end fixed sensor is prone to sensor damage when dealing with GIS settlement.

[0016] Furthermore, the communication module and antenna can be replaced according to different communication methods, which can widely adapt to market needs. The online monitoring device for expansion joint deformation of the present invention has extremely low power consumption. The online monitoring device for expansion joint deformation is awakened only within a few seconds of sending data. At other times, the online monitoring device for expansion joint deformation works in ultra-low power consumption mode, which greatly extends the service life of the online monitoring device for expansion joint deformation and the time for replacing batteries.

[0017] Furthermore, the design of the post-stage circuit achieves ultra-low power consumption for the entire device, greatly improving the service life of the device and battery; Furthermore, the use of steel wire rope can assist in the fixation of the online monitoring device for the deformation of the expansion joint, ensure the reliability of the fixation of the clamp and the expansion joint flange, prevent the probability of the equipment falling off during long-term use, and greatly reduce the pressure of later maintenance of the equipment. Even if the online monitoring device for the deformation of the expansion joint falls off, the existence of the steel wire rope will not cause the equipment to fall to the ground, and will not damage the equipment or injure the surrounding personnel. Furthermore, the present invention provides waterproof buttons with different functions on the outside of the waterproof housing, so that the functions of the monitoring device can be realized without opening the waterproof housing.

[0018] Furthermore, the sleep cycle of the sensor of the monitoring device of the present invention can be modified remotely by the server. After the wireless data transmission module receives the control instruction from the server, it transmits the instruction to the main control module to remotely modify the sleep cycle of the sensor. Furthermore, the present invention is applicable to wireless transmission modules of multiple different frequency bands, and Lora communication or Bluetooth communication can be selected according to actual needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional mechanical schematic diagram of the online monitoring device for expansion joint deformation implemented by the present invention.

[0020] Figure 2 It is a bottom view of the online monitoring device for expansion joint deformation implemented by the present invention.

[0021] Figure 3 It is an installation schematic diagram of the present invention.

[0022] Figure 4 It is a schematic diagram of the circuit module design of the present invention.

[0023] In the figure, there are sensor head 1, sensor body 2, first fastening screw 3, waterproof housing 4, waterproof button 5, clamp 6, anti-slip pad 7, thumb antenna 8, second fastening nut 9, locking handle 10, lifting ring 11, wire rope 12, flange 13, expansion joint 14, and cross bar 15. DETAILED DESCRIPTION

[0024] The present invention will be further described in detail below with reference to specific embodiments, which are intended to explain the present invention rather than to limit it.

[0025] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings 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 should fall within the scope of protection of the present invention.

[0026] See also Figures 1 to 2 This embodiment discloses an online monitoring device for deformation of an expansion joint, including a displacement sensor, a first fastening screw 3, a waterproof housing 4, a waterproof button 5, a clamp 6, an anti-slip pad 7, a thumb antenna 8, a second fastening nut 9, a locking handle 10, a lifting ring 11 and a steel wire rope 12.

[0027] Before use, you need to follow Figure 1 Assemble the online monitoring device for expansion joint deformation, The displacement sensor consists of a sensor head 1, a sensor body 2, and a back-end circuit. When assembling the displacement sensor, the sensor body 2 and the back-end circuit are installed in a waterproof housing, with the sensor head 1 exposed outside the waterproof housing. One end of the sensor body 2 is electrically connected to the sensor head 1, and the other end of the sensor body 2 is electrically connected to the back-end circuit. During detection, the sensor head 1 contacts the flange 13 of the expansion joint on the GIS equipment. The sensor head 1 is a retractable length-adjustable structure. The function of the displacement sensor is to monitor the deformation length of the expansion joint and send the expansion joint deformation data to the back-end circuit for data transmission and processing. During use, the sensor head 1 can be extended and retracted within a certain range to monitor changes in the length of the expansion joint. When in use, the sensor head must be placed against one end of the flange 13 of the expansion joint 14. The sensor body can monitor the length data based on the extension and retraction of the sensor head and output it. The function of the back-end circuit is to power the displacement sensor and transmit displacement data. The back-end circuit of the displacement sensor needs to be placed under the protection of the waterproof housing. The wiring of the displacement sensor, the wiring of the waterproof button, the wiring of the thumb antenna, the main control circuit and the battery are all placed inside the waterproof housing. After the assembled displacement sensor is installed in the waterproof housing 4, the eight first fastening screws 3 of the waterproof housing 4 are tightened to fix the waterproof housing, ensure the sealing of the waterproof housing, and provide waterproof protection for the displacement sensor's rear circuit and system circuit board. The function of the waterproof housing 4 is to protect the displacement sensor's rear circuit, provide protection and waterproofing, and prevent external interference from affecting the function of the internal circuit and data measurement. The waterproof housing includes a top cover and a base, and the top cover and base are fixed together by fastening screws. Thumb antenna 8 is secured to the top surface of the waterproof housing 4 via a second fastening nut 9. It wirelessly transmits data on the GIS device's expansion joint length, as monitored by the displacement sensor. The thumb antenna amplifies the expansion joint deformation data collected by the displacement sensor at the corresponding frequency and wirelessly transmits it to a server, effectively increasing the sensor's wireless communication range. The thumb antenna can accommodate a variety of frequencies depending on the receiving device and communication protocol. The antenna fastening nut secures the thumb antenna to the waterproof housing surface. The thumb antenna is also compact, allowing it to be mounted alongside the waterproof button on the housing surface.

[0028] In one preferred embodiment, three waterproof buttons 5 are designed in this case, and can be freely configured according to the function of the sensor in actual use. The waterproof button is fixed to the surface of the waterproof housing with a nut, and the waterproof button is electrically connected to the rear circuit of the displacement sensor; Three waterproof buttons 5 are also fixed on the upper surface of the waterproof housing 5 according to the hole positions and are used to control the displacement sensor. Among them, the power button is used to control the power-on of the online monitoring device for the deformation of the expansion joint, and the reset button is used to set the current length of the displacement sensor as the monitoring zero point. Since the initial length of the expansion joint installed under different conditions is different, the data monitored after pressing the reset button is equivalent to the deformation data of the monitoring zero point; When the work button is pressed, the expansion joint deformation online monitoring device enters a low-power sleep mode according to the preset sleep time, and wakes up according to the preset period and sends the length data monitored by the displacement sensor, that is, it automatically wakes up and sends the current length data at fixed intervals; The waterproof button can be freely designed according to the function of the expansion joint deformation monitoring device, and the sensor can be conveniently controlled without opening the waterproof shell; The fixing fixture of the expansion joint deformation online monitoring device is mainly composed of a fixture 6 and a locking handle 10. The fixture 6 presses the expansion joint deformation monitoring device and the flange tightly to maintain the level of the overall structure, keep the displacement sensor level and stable, and ensure the accuracy of data monitoring; The function of the locking handle 10 is to fix the clamp 6 so that the clamp 6 and the flanges 13 at both ends of the telescopic joint cooperate with each other, so that the entire sensor is fixed at both ends of the flanges.

[0029] When in use, the clamp 6 needs to be fixed to the other end of the flange 13 with the waterproof housing 5 so that the displacement sensor is level and then the clamp is fixed; the clamp is equipped with a fastening screw to fix the clamp to the waterproof housing. Be sure to tighten the fastening screw during installation to ensure the accuracy of the measurement data and the safety of the equipment.

[0030] When using the locking handle 10, first tighten the locking handle 10 to the loosest position, fix the clamp 6 to one end of the flange, and then continue to rotate the locking handle 10 to fix the clamp 6 on the flange 13. The tail end of the locking handle 10 is rounded to increase the contact area with the flange 13, and a rubber pad 7 is added on it to significantly improve the fixing effect of the locking handle.

[0031] A lifting ring 11 is provided on the waterproof shell 4, and the lifting ring 11 is fixedly installed on the waterproof shell 4; one end of the steel wire rope 2 is connected to the lifting ring 11 on the waterproof shell, and the other end of the steel wire rope is fixed to the cross bar 15 between the flange 13. The steel wire rope is straightened, and the auxiliary expansion joint deformation online monitoring device is fixed on the expansion joint.

[0032] See also Figure 3 , reveals the actual installation diagram of the online monitoring device for deformation of the expansion joint, places the sensor head 1 against one end of the flange of the expansion joint 14, and uses the locking handle 10 and the clamp 6 to fix the online monitoring device for deformation of the expansion joint to the other end of the flange of the expansion joint 14, so that the entire online monitoring device for deformation of the expansion joint is level, ensuring the measurement accuracy of the displacement sensor, and then tightening the locking handle 10 to ensure that the anti-slip pad 7 is against one end of the flange to prevent damage to the flange of the expansion joint, and then fix one end of the fastening wire rope to the lifting ring 11, and the other end to the cross bar between the flanges, straighten the fastening wire rope 12, and the auxiliary expansion joint deformation online monitoring device is completely fixed on the expansion joint of the GIS equipment to prevent damage to the equipment when the sensor falls off.

[0033] See also Figure 4 , revealing the design of the back-end circuit structure. The circuit part of the online monitoring device for expansion joint deformation is responsible for processing and sending the data monitored by the sensor. The basic structure consists of a power module, a signal conditioning module, a main control module and a wireless transmission module; The displacement sensor monitors the length data of the expansion joint, transmits the data to the signal conditioning module for data processing and amplification, and then transmits it to the ADC of the main control module for data acquisition. The main control module converts the data into the corresponding wireless communication data format and sends the sensor length data through the wireless transmission module.

[0034] The power module is responsible for managing and controlling the power provided by the battery and supplying power to the sensors and other modules on the circuit board. The signal conditioning module processes and amplifies the length data of the telescopic joint monitored by the displacement sensor, and then transmits it to the ADC of the main control module for data acquisition; After the main control module collects the length data of the displacement sensor, it converts the data into the data format corresponding to the wireless communication and transmits the data to the wireless transmission module according to the data format of Lora or Bluetooth. In order to reduce the overall power consumption of the sensor, The main control module can also preset the period for the sensor to enter sleep mode, so that the sensor can set different sleep cycles according to different usage conditions. The sensor only works in high power consumption for a few seconds when sending data, and works in ultra-low power mode for the rest of the time, which can greatly save battery capacity. The wireless sending module can send the wireless data of the corresponding format transmitted by the main control module through the thumb antenna. At the same time, the wireless sending module can also monitor the wireless control instructions issued by the server and transmit them to the main control module to modify the parameters inside the sensor.

[0035] Specifically, to reduce overall power consumption, the main control module of this online monitoring device for expansion joint deformation can set a sleep cycle based on the device's usage. When not sending data, it can control the device to enter ultra-low power mode, wake up the entire device when sending data, and return to ultra-low power mode after data transmission is completed, significantly reducing the device's overall power consumption. The main control module can also monitor control commands sent by the server and can directly change the sensor's sleep cycle from the host computer, providing customizable configurations for different users.

[0036] Generally speaking, the online monitoring device for deformation of the expansion joint of the present invention utilizes a combination of a displacement sensor, a post-stage circuit, and a wireless communication module, and proposes a matching design of an overall waterproof shell structure and a clamping method, which makes it possible to monitor the deformation of the expansion joint online, greatly reducing the high cost problem during manual inspection, and solving the problems of poor adaptability and low accuracy of the mechanical monitoring structure; the design of the post-stage circuit realizes ultra-low power consumption of the entire equipment, greatly improving the service life of the equipment and battery; at the same time, the communication module and antenna can be replaced according to different communication methods, which can widely adapt to market needs.

[0037] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0038] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may be a central component. When a component is referred to as being "connected to" another component, it may be directly connected to the other component or there may be a central component. When a component is referred to as being "disposed on" another component, it may be directly disposed on the other component or there may be a central component.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

Claims

1. An online monitoring device for expansion joint deformation, characterized in that: include, Displacement sensor, waterproof housing (4), waterproof button (5), clamp (6), thumb antenna (8), locking handle (10) and hanging ring (11); The end of the displacement sensor is installed in a waterproof housing, the thumb antenna (8) is fixed on the surface of the waterproof housing, and the thumb antenna (8) is communicatively connected to the displacement sensor; the waterproof button (5) is installed on the surface of the waterproof housing (4); the waterproof button (5) is used to control the displacement sensor; One end of the clamp is fixedly connected to the waterproof housing via a fastening screw; a locking handle (10) is provided on the other end of the clamp; and the displacement sensor is a retractable structure; When in use, the detection end of the displacement sensor contacts one end of the flange on the telescopic joint, and the clamp is fixed to the other end of the flange on the telescopic joint by rotating the locking handle (10).

2. The online monitoring device for deformation of an expansion joint according to claim 1, characterized in that: The displacement sensor comprises a sensor head (1), a sensor body (2) and a post-stage circuit; The sensor body (2) and the back-stage circuit are installed in a waterproof housing, the sensor head (1) is exposed outside the waterproof housing, one end of the sensor body (2) is connected to the sensor head (1), and the other end of the sensor body (2) is connected to the back-stage circuit; the back-stage circuit is electrically connected to the waterproof button (5) and the thumb antenna (8) respectively; During detection, the sensor head (1) contacts the flange on the telescopic joint, and the sensor head (1) is a telescopic length-adjustable structure.

3. The online monitoring device for deformation of an expansion joint according to claim 2, characterized in that: The post-stage circuit includes a power supply module, a signal conditioning module, a main control module and a wireless transmission module; The power module is used to provide power and control power management; The signal conditioning module is used to process and condition the length data monitored by the displacement sensor and transmit it to the main control module; The main control module converts the collected length data into a data format for wireless communication and transmits the data to the wireless transmission module; The wireless transmission module transmits the wireless data transmitted from the main control module to the server using the thumb antenna (8).

4. The online monitoring device for deformation of an expansion joint according to claim 3, characterized in that: The main control module sets a sleep cycle according to the usage of the expansion joint deformation online monitoring device, controls the expansion joint deformation online monitoring device to enter an ultra-low power consumption mode when no data is sent, wakes up the entire monitoring device when data is sent, and continues to enter the ultra-low power consumption mode after the data is sent; The main control module changes the sleep cycle of the displacement sensor of the online monitoring device for the expansion joint deformation from the host computer through the control instructions sent by the monitoring server, providing changeable configurations for different users.

5. The online monitoring device for deformation of an expansion joint according to claim 1, characterized in that: The waterproof buttons (5) include a power button, a reset button, and a working button; The power button is used to control the power-on of the displacement sensor, the reset button is used to set the current length of the sensor as the monitoring zero point, and the work button is used to put the expansion joint deformation online monitoring device into low-power sleep mode, and wake up and send sensor length data according to the preset cycle.

6. The online monitoring device for deformation of an expansion joint according to claim 1, characterized in that: A hanging ring (11) is provided on the waterproof housing (4), and the hanging ring (11) is fixedly mounted on the waterproof housing (4).

7. The online monitoring device for deformation of an expansion joint according to claim 6, characterized in that: It also includes a steel wire rope (12), one end of which is connected to the lifting ring (11) on the waterproof shell, and the other end of which is fixed to the crossbar on the flange.

8. The online monitoring device for deformation of an expansion joint according to claim 1, characterized in that: An anti-slip pad (7) is provided at one end of the locking handle (10) close to the flange.

9. The online monitoring device for expansion joint deformation according to claim 1, characterized in that: The waterproof housing (4) comprises a top cover and a base, and the top cover and the base are fixedly mounted via a first fastening screw (3); the thumb antenna (8) is fixed to the upper surface of the waterproof housing (5) via a second fastening nut (9).

10. A GIS device based on an online monitoring device for expansion joint deformation, based on the GIS online monitoring device for expansion joint deformation according to any one of claims 1 to 9, characterized in that: include, When in use, the head of the displacement sensor of the telescopic joint deformation online monitoring device contacts one end of the flange on the telescopic joint of the GIS equipment, and the clamp is fixed to the other end of the flange on the telescopic joint of the GIS equipment by rotating the locking handle (10).

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