Displacement monitoring device for fast gate of impedance type surge chamber

Abstract

The invention discloses a displacement monitoring device for a fast gate of an impedance type surge chamber, and relates to the technical field of hydraulic engineering, the displacement monitoring device comprises a steel wire rope, a steering assembly, a swing arm assembly and a displacement sensor, the steering assembly comprises a pulley yoke and a first fixed pulley, and the pulley yoke is installed on a surge chamber platform and arranged over the fast gate in an opposite mode; the first fixed pulley is installed on the pulley frame, the swing arm assembly comprises a swing arm, a swing arm frame, a second fixed pulley and a hydraulic damper, the swing arm frame is installed on the surge chamber platform, the hinged end of the swing arm is installed on the swing arm frame, the second fixed pulley is installed at the swing end of the swing arm, and the hydraulic damper is connected between the swing arm frame and the swing arm; the displacement sensor is arranged on the surge chamber platform; the lower end of the steel wire rope is connected to the quick gate, the upper end of the steel wire rope extends to the water surface and sequentially bypasses the first fixed pulley and the second fixed pulley to be connected to the displacement sensor, and the displacement sensor is used for obtaining displacement of the upper end of the steel wire rope to monitor vertical displacement of the quick gate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hydraulic engineering, in particular to a displacement monitoring device for a quick gate of an impedance type surge chamber. BACKGROUND

[0002] The impedance type surge chamber is a pressure pipeline water hammer protection facility widely used in water conservancy and hydropower engineering, and its structural feature is to limit the water inflow and outflow through the impedance orifice connecting the surge chamber and the diversion tunnel, so as to effectively reflect the water hammer wave and attenuate the pressure oscillation, and to ensure the stable operation of the unit. The quick gate of the impedance type surge chamber is usually arranged at the bottom of the surge chamber near the tunnel entrance, and its setting depth can reach tens of meters underwater. For long-distance diversion tunnels, when the unit adjusts the load during operation, especially when the load is shed, strong surges will be caused, which can easily cause the quick gate to float up and down. When the floating amplitude of the quick gate is too large, mechanical accidents may occur. Therefore, it is very important to monitor the displacement of the quick gate of the impedance type surge chamber.

[0003] At present, the displacement monitoring of the quick gate of the impedance type surge chamber mainly adopts the underwater direct measurement method, that is, the waterproof displacement sensor is directly installed on the gate body or the gate hoist piston rod through a sealed shell, the connecting cable is laid along the gate wall to the control cabinet above the water surface, or the displacement sensor and the signal processing module are jointly packaged in the underwater pressure-resistant cabin. Since the displacement sensor, signal processing module and connecting cable are all in a high-pressure, high-humidity and strong-corrosion environment for tens of meters underwater, the waterproof sealing performance of the equipment is extremely strict. Once the sensor fails or the cable is damaged, the surge chamber needs to be emptied or a diver needs to be sent for underwater maintenance, which not only takes a long time of several days, but also has great difficulty in maintenance, and the diving operation has a major safety risk. SUMMARY

[0004] The main purpose of the present application is to provide a displacement monitoring device for a quick gate of an impedance type surge chamber, which aims to solve the technical problem of difficult maintenance of the displacement monitoring device for the quick gate of the impedance type surge chamber in the prior art.

[0005] In order to achieve the above object, the displacement monitoring device of the quick gate of the impedance type surge chamber is used for monitoring the displacement of the quick gate of the impedance type surge chamber, the quick gate is arranged below the water surface, a surge chamber platform is arranged above the water surface and corresponds to the position of the quick gate, the displacement monitoring device comprises a displacement transmission mechanism and a measuring mechanism, the displacement transmission mechanism comprises a steel wire rope, a turning assembly and a swing arm assembly, the turning assembly comprises a pulley frame and a first fixed pulley, the pulley frame is installed on the surge chamber platform and is arranged opposite to the position above the quick gate, the first fixed pulley is installed on the pulley frame, the swing arm assembly comprises a swing arm, a swing arm frame, a second fixed pulley and a hydraulic damper, the swing arm frame is installed on the surge chamber platform, the hinged end of the swing arm is installed on the swing arm frame, the swinging end of the swing arm extends downward, the second fixed pulley is installed on the swinging end of the swing arm, and the hydraulic damper is connected between the swing arm frame and the swing arm; the measuring mechanism comprises a displacement sensor, and the displacement sensor is arranged on the surge chamber platform; the lower end of the steel wire rope is connected to the quick gate, the upper end of the steel wire rope extends vertically to above the water surface, passes through the first fixed pulley and the second fixed pulley in sequence and is connected to the displacement sensor, and the displacement sensor is used for acquiring the displacement of the upper end of the steel wire rope.

[0006] In an embodiment, the displacement monitoring device further comprises a tensioning mechanism, the tensioning mechanism comprises a movable pulley and a weight, the movable pulley is located between the second fixed pulley and the displacement sensor, the steel wire rope passes through the second fixed pulley and the movable pulley in sequence and is connected to the displacement sensor, and the weight is hung on the rotating shaft of the movable pulley.

[0007] In an embodiment, the weight of the weight is adjustable.

[0008] In an embodiment, the top of the quick gate is provided with an ear, the lower end of the steel wire rope is connected to the ear through a universal joint, and the universal joint can rotate vertically.

[0009] In an embodiment, the lower end of the steel wire rope is connected to the universal joint through a rigging screw.

[0010] In an embodiment, the displacement sensor is a pull rope type displacement sensor.

[0011] In an embodiment, the measuring mechanism further comprises a laser sensor, and the upper end of the steel wire rope is provided with a laser target, and the laser sensor is installed on the surge chamber platform and corresponds to the position of the laser target.

[0012] In an embodiment, the pull rope type displacement sensor is covered in a protective box.

[0013] In an embodiment, the first fixed pulley cover is provided with a protective cover, and a through hole is formed in the protective cover for the steel wire rope to pass through.

[0014] In an embodiment, the steel wire rope is a galvanized steel wire rope.

[0015] The displacement monitoring device of the quick gate of the impedance type surge chamber provided by the application is arranged between the quick gate below the water surface and the displacement sensor above the water surface, and the vertical displacement of the quick gate is transmitted to the displacement sensor through the steel wire rope. The vertical displacement of the quick gate is indirectly obtained by the displacement sensor through the vertical displacement of the upper end of the steel wire rope, so as to monitor the vertical displacement of the quick gate. The displacement monitoring device only needs the mechanical connection of the steel wire rope and the quick gate under water, the displacement sensor is arranged on the surge chamber platform above the water surface, and there is no need to lay underwater circuit and perform underwater maintenance operation, so that the displacement sensor is convenient to calibrate and maintain, and the displacement sensor is convenient to communicate and exchange data with the external control system. The steel wire rope sequentially passes through the first fixed pulley and the second fixed pulley before being connected to the displacement sensor, the second fixed pulley is installed on the swing arm, the hydraulic damper is connected between the swing arm and the swing arm frame, the swing arm is limited to swing quickly through the hydraulic damper, the swing of the steel wire rope under the impact of the water flow is filtered at the swing arm assembly, the swing displacement is not transmitted to the displacement sensor by the steel wire rope, so that the vertical displacement monitoring of the quick gate is not interfered by the displacement of the steel wire rope, and the accuracy of the monitoring result is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only show some embodiments of the application, and for those skilled in the art, other drawings can also be obtained from the structures shown in the drawings without creative labor.

[0017] Figure 1 The structural schematic diagram of an embodiment of the displacement monitoring device of the quick gate of the impedance type surge chamber provided by the application.

[0018] EXPLANATION OF DRAWINGS: 10, steel wire rope; 11, lifting lug; 12, rigging screw; 13, universal joint; 20, steering assembly; 21, pulley frame; 22, first fixed pulley; 23, protective cover; 30, swing arm assembly; 31, swing arm; 32, swing arm frame; 33, second fixed pulley; 34, hydraulic damper; 41, displacement sensor; 42, laser sensor; 43, protective box; 51, movable pulley; 52, weight; 100, quick gate; 200, surge chamber platform.

[0019] The objectives, functional characteristics and advantages of the present application will be further described with reference to the embodiments in combination with the accompanying drawings. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the protection scope of the present application.

[0021] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0022] In addition, if the embodiments of the present application involve descriptions such as “first”, “second”, etc., the descriptions of “first”, “second”, etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by “first” and “second” can explicitly or implicitly include at least one of the features. In addition, “and / or” or “and / or” appearing throughout the text means that the three parallel solutions are included, for example, “A and / or B” includes A solution, or B solution, or A and B solutions are satisfied at the same time. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person of ordinary skill in the art can realize it, and when the combination of technical solutions appears to be contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present application.

[0023] At present, the displacement monitoring of the rapid gate of the impedance type surge chamber mainly adopts an underwater direct measurement method, that is, a waterproof displacement sensor is directly installed on the gate body or the gate hoist piston rod through a sealing shell, a connecting cable is laid along the gate wall upward to the control cabinet above the water surface, or the displacement sensor and a signal processing module are jointly encapsulated in an underwater pressure-resistant cabin. Since the displacement sensor, the signal processing module and the connecting cable are all in a high-pressure, high-humidity and strong-corrosion environment with a water depth of dozens of meters for a long time, the waterproof sealing performance of the equipment is extremely strict. Once the sensor fails or the cable is damaged, the surge chamber needs to be emptied or a diver needs to be dispatched for underwater operation and maintenance. Not only is the time-consuming long up to several days, but also the maintenance is difficult, and the diving operation has a major safety risk.

[0024] The application provides a displacement monitoring device for a quick gate of an impedance type surge chamber, which is used for monitoring the displacement of a quick gate 100 of the impedance type surge chamber, the quick gate 100 is arranged below a water surface, a surge chamber platform 200 is arranged above the water surface and corresponds to the position of the quick gate 100, the displacement monitoring device comprises a displacement transmission mechanism and a measuring mechanism, the displacement transmission mechanism comprises a steel wire rope 10, a turning assembly 20 and a swing arm assembly 30, the turning assembly 20 comprises a pulley frame 21 and a first fixed pulley 22, the pulley frame 21 is installed on the surge chamber platform 200 and is arranged opposite to above the quick gate 100, the first fixed pulley 22 is installed on the pulley frame 21, the swing arm assembly 30 comprises a swing arm 31, a swing arm frame 32, a second fixed pulley 33 and a hydraulic damper 34, the swing arm frame 32 is installed on the surge chamber platform 200, the hinged end of the swing arm 31 is installed on the swing arm frame 32, the swing end of the swing arm 31 extends downward, the second fixed pulley 33 is installed on the swing end of the swing arm 31, and the hydraulic damper 34 is connected between the swing arm frame 32 and the swing arm 31; the measuring mechanism comprises a displacement sensor 41, which is arranged on the surge chamber platform 200; the lower end of the steel wire rope 10 is connected to the quick gate 100, the upper end of the steel wire rope 10 extends vertically to above the water surface and is connected to the displacement sensor 41 after sequentially passing through the first fixed pulley 22 and the second fixed pulley 33, and the displacement sensor 41 is used for acquiring the displacement of the upper end of the steel wire rope 10.

[0025] Please refer to Figure 1, the quick gate 100 is located at a position several meters deep under water, the surge chamber platform 200 is arranged above the water surface, the first fixed pulley 22 is installed on the pulley frame 21, and the first fixed pulley 22 is located directly above the quick gate 100, so that the part of the steel wire rope 10 below the water surface is arranged vertically. The lower end of the steel wire rope 10 is connected to the quick gate 100, and the upper end is connected to the displacement sensor 41. When the quick gate 100 vertically displaces under the impact of the surge, the quick gate 100 drives the steel wire rope 10 to displace together, and the vertical displacement of the quick gate 100 can be obtained by measuring the displacement of the upper end of the steel wire rope 10 through the displacement sensor 41. The steel wire rope 10 is wound on the first fixed pulley 22 and the second fixed pulley 33 in turn after passing through the water surface, the first fixed pulley 22 is used to convert the displacement direction of the steel wire rope 10, and the second fixed pulley 33 is installed on the swing arm 31. The swing arm 31 can swing relative to the hinge end, and the swing arm 31 and the swing arm frame 32 are further connected to the hydraulic damper 34. The hydraulic damper 34 is connected between the hinge end and the swing end of the swing arm 31. When the water flow impacts the steel wire rope 10, the steel wire rope 10 shakes quickly, and the steel wire rope 10 transmits the impact force to the second fixed pulley 33 and the swing arm 31. The hydraulic damper 34 can absorb the impact energy transmitted by the steel wire rope 10, and inhibit the swing arm 31 from swinging quickly, so as to filter the shaking displacement of the steel wire rope 10 under the impact of the water flow at the swing arm assembly 30, avoid the steel wire rope 10 from transmitting the shaking displacement to the displacement sensor 41, and avoid the self-displacement of the steel wire rope 10 from interfering with the vertical displacement monitoring of the quick gate 100. When the quick gate 100 is raised or lowered under the active operation of the operator, the quick gate 100 drives the steel wire rope 10 to displace together, and since the displacement speed of the steel wire rope 10 is relatively slow, the impact of the steel wire rope 10 on the second fixed pulley 33 and the swing arm 31 is relatively slow, the hydraulic damper 34 basically does not limit the swing of the swing arm 31, so that the swing arm 31 can adjust the swing direction according to the displacement of the steel wire rope 10, to compensate for the slack caused by the length change of the steel wire rope 10, ensure that the second fixed pulley 33 and the steel wire rope 10 are in engagement, and ensure that the displacement sensor 41 monitors the displacement of the quick gate 100.

[0026] The displacement monitoring device of the quick gate of the impedance type surge chamber is characterized in that a steel wire rope 10 is arranged between the quick gate 100 below the water surface and the displacement sensor 41 above the water surface, the vertical displacement of the quick gate 100 is transmitted to the displacement sensor 41 through the steel wire rope 10, the vertical displacement of the quick gate 100 is indirectly obtained by the displacement sensor 41 through collecting the vertical displacement of the upper end of the steel wire rope 10, and the vertical displacement of the quick gate 100 is monitored. The displacement monitoring device only needs the mechanical connection of the steel wire rope 10 and the quick gate 100 under water, the displacement sensor 41 is arranged on the surge chamber platform 200 above the water surface, the underwater circuit does not need to be laid, and the underwater maintenance operation is not needed, so that the displacement sensor 41 is convenient to calibrate and maintain, and the displacement sensor 41 is convenient to communicate and exchange data with the external control system. The steel wire rope 10 passes through the first fixed pulley 22 and the second fixed pulley 33 in sequence before connecting the displacement sensor 41, the second fixed pulley 33 is installed on the swing arm 31, the swing arm 31 is connected with the swing arm frame 32 through the hydraulic damper 34, the swing arm 31 is limited to swing quickly through the hydraulic damper 34, the swing of the steel wire rope 10 under the impact of water flow is filtered at the swing arm assembly 30, the swing displacement is prevented from being transmitted to the displacement sensor 41 by the steel wire rope 10, the vertical displacement monitoring of the quick gate 100 is prevented from being interfered by the self displacement of the steel wire rope 10, and the accuracy of the monitoring result is ensured.

[0027] In an embodiment, the displacement monitoring device further comprises a tensioning mechanism, the tensioning mechanism comprising a movable pulley 51 and a weight 52, the movable pulley 51 being located between the second fixed pulley 33 and the displacement sensor 41, the steel wire rope 10 being connected to the displacement sensor 41 after passing through the second fixed pulley 33 and the movable pulley 51 in sequence, and the weight 52 being hung on the rotating shaft of the movable pulley 51.

[0028] Please continue to refer to Figure 1, the steel wire rope 10 is wound downward from the second fixed pulley 33, then extends upward and is connected to the displacement sensor 41, and the weight 52 is hung on the rotating shaft of the movable pulley 51 to provide a vertical downward load to the movable pulley 51 and transmit the load to the steel wire rope 10 through the movable pulley 51. The height of the movable pulley 51 is lower than the second fixed pulley 33 and the displacement sensor 41, and the steel wire rope 10 can maintain a constant tension when the steel wire rope 10 is subjected to a vertical downward load. When the steel wire rope 10 is slackened due to the displacement of the quick gate 100 or temperature change, the weight 52 pulls the movable pulley 51 to displace downward, so that the steel wire rope 10 is always kept in tension, and the error between the displacement value of the steel wire rope 10 obtained by the displacement sensor 41 and the actual displacement value of the quick gate 100 is reduced. The swing arm frame 32 is arranged on the pressure regulating chamber platform 200 and extends upward, the swing arm 31 is installed on the swing arm frame 32, the hinged end of the swing arm 31 is higher than the swing end, the second fixed pulley 33 is installed on the swing end, and the steel wire rope 10 is wound around the second fixed pulley 33. When the weight 52 applies a vertical downward load to the steel wire rope 10, the swing arm 31 maintains dynamic balance under the combined action of the support of the swing arm frame 32 and the vertical load of the steel wire rope 10, thereby ensuring the continuous action of the swing arm assembly 30.

[0029] In an embodiment, the weight of the weight 52 is adjustable.

[0030] It can be understood that when the weight is increased, the pulling force of the weight 52 on the movable pulley 51 is increased, and then transmitted to the steel wire rope 10 through the movable pulley 51, so that the tension of the steel wire rope 10 is increased; when the weight is reduced, the pulling force is reduced, and the tension of the steel wire rope 10 is correspondingly reduced. By adjusting the weight, the tension state of the steel wire rope 10 can be optimized in real time according to the working condition change, the interference of environmental factors on displacement monitoring is effectively overcome, the measurement accuracy and system durability are ensured, the displacement measurement error caused by insufficient or excessive tension is reduced, the displacement value of the steel wire rope 10 obtained by the displacement sensor 41 is closer to the actual displacement value of the quick gate 100, and thus the accuracy of the monitoring data is improved.

[0031] In an embodiment, the top of the quick gate 100 is provided with an ear 11, and the lower end of the steel wire rope 10 is connected to the ear 11 through a universal joint 13, and the universal joint 13 can rotate around a vertical axis.

[0032] It should be noted that the universal joint 13 can rotate freely around the vertical axis, and when the quick gate 100 is subjected to complex motion due to water flow impact, the rotating characteristic of the universal joint 13 allows only the vertical displacement to be transmitted at the connection between the steel wire rope 10 and the quick gate 100, and filters the interference motion in other directions, so that the displacement of the steel wire rope 10 is equal to the vertical displacement of the quick gate 100, thereby making the displacement value of the steel wire rope 10 collected by the displacement sensor 41 closer to the vertical displacement value of the quick gate 100, significantly reducing the measurement error caused by the swing of the gate, and improving the authenticity and reliability of the displacement monitoring data.

[0033] In one embodiment, the lower end of the wire rope 10 is connected to the universal joint 13 via a rigging screw 12.

[0034] Furthermore, the wire rope 10 is connected to the universal joint 13 via the rigging screw 12, which facilitates the assembly and disassembly of the wire rope 10 and the universal joint 13. When connecting the wire rope 10 and the universal joint 13, the connection length between the wire rope 10 and the universal joint 13 can be finely adjusted by turning the rigging screw 12, which makes it easier to keep the wire rope 10 taut during the installation of the displacement monitoring device.

[0035] In one embodiment, the displacement sensor 41 is a pull-string displacement sensor 41.

[0036] Understandably, the displacement sensor 41 adopts the existing pull-rope type displacement sensor 41. The upper end of the wire rope 10 is connected to the measuring rope of the pull-rope type displacement sensor 41, and the extension direction of the measuring rope is consistent with the extension direction of the wire rope 10 after passing through the movable pulley 51. The pull-rope type displacement sensor 41 converts the linear displacement of the measuring rope into the corresponding electrical signal output through the internal encoder, realizing the accurate measurement of the vertical displacement of the fast gate 100 and facilitating data exchange with the external monitoring system.

[0037] In one embodiment, the measuring mechanism further includes a laser sensor 42, with a laser target mounted on the upper end of the wire rope 10, and the laser sensor 42 installed on the pressure regulating chamber platform 200 at the position corresponding to the laser target.

[0038] It should be noted that the measuring mechanism is also equipped with a laser sensor 42. A laser target is fixedly installed at the upper end of the wire rope 10, and the laser sensor 42 is installed on the pressure regulating chamber platform 200 and aligned with the initial position of the laser target. When the fast gate 100 undergoes vertical displacement, the wire rope 10 drives the laser target to move synchronously. The laser sensor 42 emits a laser beam and receives the signal reflected from the target, calculating the position change of the target in real time, thereby obtaining the displacement value of the upper end of the wire rope 10. By forming parallel monitoring with the pull-rope displacement sensor 41, the output data of the two sensors can be compared and verified, further improving the accuracy and reliability of the measurement results.

[0039] In one embodiment, the pull-string displacement sensor 41 is housed inside a protective enclosure 43.

[0040] It can be understood that the steel wire rope 10 extends into the protection box 43 and is connected with the pull rope displacement sensor 41, the protection box 43 can provide protection for the pull rope displacement sensor 41 to isolate the pollutants in the external environment, effectively improve the service life of the pull rope displacement sensor 41, and ensure the long-term stable operation of the displacement monitoring device in harsh working conditions. The side of the protection box 43 is provided with an openable maintenance door, which is convenient for calibration and data reading operation of the pull rope displacement sensor 41.

[0041] In an embodiment, the first fixed pulley 22 is provided with a protective cover 23, and the protective cover 23 is provided with a through hole through which the steel wire rope 10 passes.

[0042] It can be explained that the protective cover 23 covers the first fixed pulley 22, and the steel wire rope 10 passes through the through hole on the protective cover 23 and is wound on the first fixed pulley 22, the through hole can only pass through the steel wire rope 10 and can block the aquatic organisms wound on the steel wire rope 10, thereby preventing the aquatic organisms from winding the first fixed pulley 22, ensuring the continuous and stable operation of the first fixed pulley 22, and effectively prolonging the service life of the first fixed pulley 22.

[0043] In an embodiment, the steel wire rope 10 is a galvanized steel wire rope 10.

[0044] It can be understood that the steel wire rope 10 adopts the galvanized steel wire rope 10 in the prior art, when the steel wire rope 10 is immersed in water for a long time, the zinc layer reacts with the corrosion medium in the water first, effectively delaying the rusting process of the base steel wire, significantly improving the durability of the steel wire rope 10 in a humid and corrosive environment, and ensuring that the displacement monitoring device always maintains accurate transmission accuracy and reliable measurement results during long-term operation.

[0045] The above only describes the exemplary embodiments of the present application, and does not limit the protection scope of the present application, any equivalent structural transformation made by using the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the protection scope of the present application.

Claims

1. A displacement monitoring device for a quick gate of an impulse type surge chamber, characterized in that, The quick gate is arranged below the water surface, a surge chamber platform is arranged above the water surface and corresponds to the quick gate, and the displacement monitoring device comprises: A displacement transmission mechanism, the displacement transmission mechanism comprises a steel wire rope, a turning assembly and a swing arm assembly, the turning assembly comprises a pulley frame and a first fixed pulley, the pulley frame is installed on the surge chamber platform and is arranged opposite to the quick gate, the first fixed pulley is installed on the pulley frame, the swing arm assembly comprises a swing arm, a swing arm frame, a second fixed pulley and a hydraulic damper, the swing arm frame is installed on the surge chamber platform, a hinged end of the swing arm is installed on the swing arm frame, a swing end of the swing arm extends downward, the second fixed pulley is installed on the swing end of the swing arm, and the hydraulic damper is connected between the swing arm frame and the swing arm; A measuring mechanism, the measuring mechanism comprises a displacement sensor, and the displacement sensor is arranged on the surge chamber platform; A lower end of the steel wire rope is connected to the quick gate, an upper end of the steel wire rope vertically extends above the water surface, sequentially passes through the first fixed pulley and the second fixed pulley and is connected to the displacement sensor, and the displacement sensor is used to acquire the displacement of the upper end of the steel wire rope.

2. The displacement monitoring apparatus for a quick gate of a surge dam of the impedance type according to claim 1, characterized in that, The displacement monitoring device further comprises a tensioning mechanism, the tensioning mechanism comprises a movable pulley and a weight, the movable pulley is located between the second fixed pulley and the displacement sensor, the steel wire rope sequentially passes through the second fixed pulley and the movable pulley and is connected to the displacement sensor, and the weight is hung on a rotating shaft of the movable pulley.

3. The displacement monitoring apparatus for a quick gate of a surge dam of the impedance type according to claim 2, characterized in that, The weight of the weight is adjustable.

4. The displacement monitoring apparatus for a quick gate of a surge dam of the impedance type according to claim 1, characterized in that, A top of the quick gate is provided with an eye, a lower end of the steel wire rope is connected to the eye through a universal joint, and the universal joint can rotate around the vertical direction.

5. The displacement monitoring apparatus for a quick gate of a surge dam of the impedance type according to claim 4, characterized in that, The lower end of the steel wire rope is connected to the universal joint through a rigging screw.

6. A displacement monitoring device for a quick gate of a surge dam of the type defined in any one of claims 1 to 5, characterized in that The displacement sensor is a pull rope type displacement sensor.

7. The displacement monitoring apparatus for a quick gate of a surge dam of the impedance type according to claim 6, characterized in that, The measuring mechanism further comprises a laser sensor, and an upper end of the steel wire rope is provided with a laser target, and the laser sensor is installed on the surge chamber platform and corresponds to the position of the laser target.

8. The displacement monitoring apparatus for a quick gate of a surge dam of the impedance type according to claim 6, characterized in that, The pull rope type displacement sensor is covered in a protective box.

9. A displacement monitoring device for a quick gate of a surge dam of the type defined in any one of claims 1 to 5, characterised in that, The first fixed pulley is covered with a protective cover, and a through hole for the steel wire rope to pass through is formed in the protective cover.

10. A displacement monitoring device for a quick gate of a surge dam of the type defined in any one of claims 1 to 5, characterised in that, The steel wire rope is a galvanized steel wire rope.

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