CN217555545U

CN217555545U - Device for hoisting steel lining inspection cage at vertical shaft section of water diversion type hydropower station

Info

Publication number: CN217555545U
Application number: CN202220694984.8U
Authority: CN
Inventors: 闭锐茂; 杨红玉
Original assignee: China Energy Construction Group Guangxi Electric Power Design And Research Institute Co ltd
Current assignee: China Energy Construction Group Guangxi Electric Power Design And Research Institute Co ltd
Priority date: 2022-03-28
Filing date: 2022-03-28
Publication date: 2022-10-11
Anticipated expiration: 2032-03-28

Abstract

The utility model discloses a device for hoisting a steel lining inspection cage at a vertical shaft section of a diversion type hydropower station, which mainly comprises a guide rail, a pulley block and a cable; the pulley block comprises a 1# pulley block, a 2# pulley block and a 3# pulley block; the cable sequentially passes through the pulley blocks; the 3# pulley block is arranged on the guide rail in a matching mode. The device utilizes the upper bending section to be the low pressure section, and the characteristics that water pressure is little set up the guide rail, through guide rail and assembly pulley cooperation, can make the inspection cage conveniently under the control of hoist engine from the upper bending section get into the shaft smoothly. The device has characteristics such as rational in infrastructure, installation are easy, convenient to use, safe and reliable, has overcome the not enough of current inspection cage use, has improved the efficiency and the security of diversion formula power station penstock shaft inspection, maintenance.

Description

Device for hoisting steel lining inspection cage in vertical shaft section of water diversion type hydropower station

Technical Field

The utility model belongs to the supporting facility of underground inspection especially relates to a device that is used for diversion formula power station shaft section steel lining inspection cage to hoist and mount.

Background

A pressure steel pipe vertical shaft section of a water diversion type hydropower station is characterized by vertical arrangement, large height and high inspection difficulty during maintenance, and because the inspection difficulty is high, a plurality of hydropower stations do not carry out conventional inspection on the pressure steel pipe vertical shaft section, potential safety hazards existing in a vertical shaft which runs for years, such as abrasion, cavitation erosion, cavitation, deformation and the like of the steel pipe, cannot be discovered. Although a few hydropower stations are designed with measures for shaft inspection at present, the problems that how to convey an inspection cage into a shaft from an upward bent section and how to arrange a hanging point right above the shaft are not solved, most of the measures are to arrange a vertical large-diameter pipeline right above the vertical section of the shaft to be obliquely crossed with the upward bent section of the pressure steel pipe and then place the inspection cage down through the pipeline, so that the hole of the pressure steel pipe at the oblique crossing part is overlarge, when the pressure steel pipe runs, water flow encounters sudden change at the joint part to cause water flow disorder, the pipe wall at the joint part is easy to cause cavitation erosion, water head loss increase and the like, the whole set of device is high in manufacturing cost, and the upward bent section cannot be inspected by the scheme.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide a device that is used for diversion type power station shaft section steel lining inspection cage hoist and mount rational in infrastructure, installation are easy, convenient to use, safe and reliable.

In order to solve the technical problem, the utility model discloses a following technical scheme:

a device for hoisting a steel lining inspection cage at a vertical shaft section of a water diversion type hydropower station mainly comprises a guide rail, a pulley block and a cable; the pulley block comprises a 1# pulley block, a 2# pulley block and a 3# pulley block; the cable sequentially passes through the pulley blocks; the 3# pulley block is arranged on the guide rail in a matching mode.

The guide rail is arranged on the vertical plane of the upper bending section of the vertical shaft along the upper wall of the pressure steel pipe and positioned on the central axis of the pipeline.

The 1# pulley block is fixedly arranged in the winch chamber and positioned above the opening at the upper end of the cable channel steel pipe, and a cable is guided into the cable channel steel pipe through the 1# pulley block and enters the horizontal section at the upstream end of the vertical shaft upper bending section; the cable channel steel pipe is vertically communicated with the winch room and the shaft upward bending section, and the upper end of the cable channel steel pipe is provided with a detachable high-strength steel blind flange.

The 2# pulley block is arranged at the opening at the lower end of the cable channel steel pipe, and the cable is led into the 3# pulley block through the 2# pulley block after coming out of the cable channel steel pipe.

The 3# pulley block comprises a pair of walking main wheels, a walking auxiliary wheel, a pair of pulleys and 1 chain type hook, wherein the walking main wheels are positioned at the upper part of the pulley block, the walking auxiliary wheel is positioned at the lower part of the pulley block, the pair of pulleys and the walking auxiliary wheel are coaxial and are respectively arranged at two sides of the walking auxiliary wheel, and the 1 chain type hook is connected at the bottom of the pulley block.

The guide rail is the high-strength steel of type of falling T, and the guide rail pterygoid lamina is parallel with the section roof of going up the bend, and the web carries out the opening full weld with the section roof of going up the bend, and the pterygoid lamina both sides symmetry of guide rail lower extreme is widened and is formed the cardboard and block the both sides board of 3# assembly pulley.

The upper end and the lower end of the guide rail are both subjected to beveling treatment.

The diameter of the cable channel steel pipe is 400mm.

The cable is provided with a clamping block.

Aiming at the problems of hoisting and checking of the existing diversion type hydropower station pressure steel pipe shaft section inspection cage, the inventor designs and manufactures a device for hoisting the diversion type hydropower station shaft section steel lining inspection cage, which mainly comprises a guide rail, a pulley block and a mooring rope; the pulley block comprises a 1# pulley block, a 2# pulley block and a 3# pulley block; the cable sequentially passes through the pulley blocks; the 3# pulley block is arranged on the guide rail in a matching mode. The device utilizes the upper bending section to be the low pressure section, and the characteristics that water pressure is little set up the guide rail, through guide rail and assembly pulley cooperation, can make the inspection cage conveniently under the control of hoist engine from the smooth entering shaft of upper bending section. Because the guide rail is located the central axis's of pipeline perpendicular, belong to the symmetrical arrangement, rivers are the symmetrical operation in the both sides of guide rail, guarantee the ride comfort of rivers, and rivers also do not have adverse effect to the guide rail, can guarantee that the guide rail is safe when the pressure steel pipe moves. Therefore, the device has characteristics such as rational in infrastructure, installation are easy, convenient to use, safe and reliable, has overcome the not enough that current inspection cage used, has improved the efficiency and the security that diversion type hydropower station penstock shaft inspection was safeguarded.

Drawings

Fig. 1 is the structure and the use state diagram of the device for hoisting the diversion type hydropower station shaft section steel lining inspection cage.

Fig. 2 is a schematic view of the inspection cage of fig. 1 in an upwardly curved section.

Fig. 3 is a partially enlarged structural schematic diagram of the # 3 pulley block in fig. 2.

In the figure: the inspection cage comprises a guide rail 1, a cable 2, a pulley block 3# 1, a pulley block 2# 4, a pulley block 3# 5, a winch 6, a cable channel steel pipe 7, a high-strength steel blind flange 8, a main traveling wheel 9, an auxiliary traveling wheel 10, a pulley 11, a chain type hook 12, a cable clamping block 13, a clamping plate 14, a safety rope 15, a pressure pipeline 16 and an inspection cage 17.

Detailed Description

1. Design and structure of hoisting device

The utility model discloses mainly combine to design in certain engineering of establishing, this engineering shaft steel lining internal diameter is 3.6m, and the shaft height is about 186m, and the turning radius of the section of bending on and the section of bending down is 20m, and other similar engineering can refer to going on. The project adopts an assembled steel cage (as Chinese patent 'inspection cage for steel lining of shaft section of diversion type hydropower station', patent No. 2021217611597) to inspect the shaft section, as shown in figures 1 to 3, the hoisting device mainly comprises a guide rail, a pulley block and a cable. Wherein, the first and the second end of the pipe are connected with each other,

the guide rail is arranged on the vertical surface of the vertical shaft upper bending section along the upper wall of the pressure steel pipe and positioned on the central axis of the pipeline. The guide rail is the high-strength steel of type of falling T, and the guide rail pterygoid lamina is parallel with the section roof of going up the bend, and the web carries out the opening full weld with the section roof of going up the bend, and the pterygoid lamina both sides symmetry of guide rail lower extreme is widened and is formed the cardboard and block the both sides board of 3# assembly pulley. The upper end and the lower end of the guide rail are both subjected to beveling treatment.

The pulley block comprises a 1# pulley block, a 2# pulley block and a 3# pulley block; the cable sequentially passes through the pulley blocks; the 3# pulley block is arranged on the guide rail in a matching mode. The 1# pulley block is fixedly arranged in the winch chamber and positioned above the opening at the upper end of the cable channel steel pipe, and a cable is guided into the cable channel steel pipe through the 1# pulley block and enters the horizontal section at the upstream end of the upper bent section of the vertical shaft; a cable channel steel pipe (the diameter is 400 mm) is vertically communicated with the winch chamber and the shaft upward bending section, and the upper end of the cable channel steel pipe is provided with a detachable high-strength steel blind flange. The 2# pulley block is arranged at the opening at the lower end of the cable channel steel pipe, and the cable is led into the 3# pulley block through the 2# pulley block after coming out of the cable channel steel pipe. The 3# pulley block comprises a pair of walking main wheels, a walking auxiliary wheel, a pair of pulleys and 1 chain type hook, wherein the walking main wheels are positioned at the upper part of the pulley block, the walking auxiliary wheel is positioned at the lower part of the pulley block, the pair of pulleys and the walking auxiliary wheel are coaxial and are respectively arranged at two sides of the walking auxiliary wheel, and the 1 chain type hook is connected at the bottom of the pulley block.

The inspection cage assembly enters from the manhole at the downstream side of the butterfly valve in the valve chamber, after the inspection cage is installed in the horizontal section of the pressure pipeline, the inspection cage is controlled by a winch through a guide rail, slowly runs into a vertical shaft under the dead weight of the inspection cage and the like, inspectors stand (an upward bending section and a vertical section) or sit (a downward bending section) in the inspection cage, the safety belt is tied in the whole process, and the inner wall of the steel pipe vertical shaft is inspected by adopting the modes of visual observation, photographing, video recording or hammer knocking.

2. Arrangement and implementation of inspection protocols

2.1 shaft section inspection plan details arrangement and characteristics thereof

1) Hoisting machine

The winch is arranged in a machine room above the vertical shaft section, and the cable enters the horizontal (or nearly horizontal) section at the upstream end of the upward bending section of the vertical shaft through the vertical steel pipe (cable channel steel pipe). The diameter of the cable channel steel pipe is 400mm, the pipe diameter is small, the cable channel steel pipe is basically vertically intersected with the main pipe (pressure steel pipe), the opening of the intersection of the main pipe (pressure steel pipe) and the main pipe (pressure steel pipe) can be prevented from being too large, the disordered state of water flow is reduced, and the safety of the joint is also enhanced. The upper end of the cable channel steel pipe is plugged by a high-strength steel blind flange at ordinary times and is opened when needed. The cable of the embodiment is 2 steel cables, and when the cable is actually designed, the other cable can safely bear the whole load even if one cable is broken, so that the safety is guaranteed.

2) Guide rail

The guide rail is one of the key parts of the device. The guide rail is positioned on the center of the top of the upper bending section and is made of inverted T-shaped high-strength steel. The guide rail wing plate is parallel to the top plate of the upper bending section, and the web plate and the top plate of the upper bending section are subjected to opening full welding. The upper bending section is a low-pressure section, the water pressure is low (namely under the condition, when the stress is considered, the upper bending section can be used for concrete lining instead of steel lining), and the permanent steel guide rail is arranged on the upper wall of the upper bending section along the pressure steel pipe and has no adverse effect on the pressure steel pipe. And because the guide rail is positioned on the vertical surface of the central axis of the pipeline and is symmetrically arranged, the water flow symmetrically runs on two sides of the guide rail, the smoothness of the water flow is ensured, the water flow has no adverse effect on the guide rail, and the guide rail can be ensured to be safe when the pressure steel pipe runs. Two sides of a wing plate at the lower end of the guide rail (right above the vertical section of the shaft) are symmetrically widened to form clamping plates for clamping two side plates of the 3# pulley block, so that the 3# pulley block is prevented from continuously sliding downwards, and the 3# pulley block can serve as a hanging point of the inspection cage at the vertical section of the shaft. The upper end and the lower end of the guide rail are both subjected to beveling treatment, the upper end can reduce the frontal impact of water flow, the lower end can better conform to the water flow, the flow state is improved, and the purpose is to ensure that the guide rail is safer.

3) Pulley and hoisting point

The device is provided with 3 pulley blocks, wherein the 1# pulley block is fixedly arranged in the winch chamber and positioned above the opening at the upper end of the steel pipe of the cable channel, and the pulley block is used as a turning point of the cable to guide the cable into the cable channel.

The No. 2 pulley block is arranged at the opening at the lower end of the steel pipe of the cable channel, the pulley block is not arranged when the pressure steel pipe runs, and the pressure steel pipe is installed at the opening through 3 high-strength screws when a vertical shaft needs to be checked. The purpose of the 2# pulley block is to guide the cable into the 3# pulley block as a turning point for the cable.

The 3# pulley block is the key of the device, and is a pulley block and a lifting point. The 3# pulley block mainly comprises 1 pair of main traveling wheels above the track, 1 pair of auxiliary traveling wheels below the track, 1 pair of pulleys and 1 chain type hook, wherein the auxiliary traveling wheels below the track and the pulleys are coaxial, and a detachable assembly mode is adopted to facilitate the threading of a cable rope. When the inspection cage is walked from the top to the below, the chain couple catches on the link eye on the inspection cage, and the hawser is slowly transferred to the hoist engine, and inspection cage and 3# assembly pulley are under the dead weight effect, slowly walk to the below along the track through the walking wheel on the 3# assembly pulley. When the 3# pulley block moves over the vertical end of the vertical shaft and is clamped by the clamping plate at the tail end of the guide rail, the cable rope begins to loosen, the inspection cage is reversely lifted, the chain type hook automatically breaks away from the hanging cage hanging hole under the action of self weight (if the chain type hook cannot automatically break away, a worker in the inspection cage can throw the rope behind the hook to break away), and the 3# pulley block automatically turns into the fixed pulley and begins to serve as a fixed lifting point of the inspection cage in the vertical section of the vertical shaft. After unhooking, the winch can continue to transfer the cable, and the transfer of the suspension cage in the vertical shaft is completed. After the inspection of the vertical section and the downward bending section of the vertical shaft is finished, the winch slowly lifts the inspection cage, when the inspection cage rises to the position right above the vertical section of the vertical shaft, the clamping block arranged on the cable rope is in contact with the 3# pulley block, the cable rope on the chain type hook is tied with the lifting lug on the upper part of the inspection cage, the cable rope is continuously recovered, the clamping block pushes the 3# pulley block to upwards walk along the guide rail, and the inspection cage and the 3# pulley block finally return to the upper end of the upward bending section together. The components can then be disassembled in reverse, and inspection is complete.

4) Inspection cage

The inspection cage adopts the equipment cage that can disassemble, and the built-up member is gone into from the manhole of the butterfly valve downstream side in the valve chamber, installs in pipeline under pressure horizontal segment. After the inspection cage completely enters the vertical section of the vertical shaft, workers in the inspection cage can open the supporting frames (if the supporting frames are arranged) arranged around the cage to prevent the inspection cage from swinging in the vertical shaft, and can also hold the rod to support the wall of the vertical shaft to prevent the inspection cage from swinging too much.

2.2 inspection of the major operating steps

2.2.1 preparation before inspection work

(1) And closing a butterfly valve of a butterfly valve chamber, emptying water in the steel pipe, opening a manhole in the butterfly valve chamber, and opening a ball valve manhole in the plant to generate natural wind in the pressure pipeline. If the natural air quantity is insufficient, an air blower can be adopted to blow air into the pressure pipeline from the ball valve inlet manhole.

(2) And opening a blind flange (plug) of the cable channel steel pipe, hanging the cable on the No. 1 pulley group, and feeding the cable into the pressure steel pipe for a certain length through the cable channel steel pipe.

(3) A safety rope is tied on the 3# pulley block (the safety rope is prevented from sliding to the lower portion of the guide rail due to carelessness in the installation process), the safety rope is connected with a safety anchor hook outside the manhole and then is fed into the guide rail, the rope penetrates through the middle of the 3# pulley block, the pulley and the walking auxiliary wheel are installed in the pulley block, and the rope is hung on the pulley of the 3# pulley block at the moment.

(4) And installing a 2# pulley block, putting the cable rope into a groove below the pulley, and sealing a sealing plate at the lower end part of the pulley to prevent the cable rope from falling off from the pulley.

(5) And (4) feeding the inspection cage assembly into the horizontal section of the pressure steel pipe from the inlet hole of the butterfly valve, and completing the assembly.

(6) After the cable is connected with the inspection cage, a cable clamping block is installed at the cable fixing position. Slowly promote the inspection cage, until the hawser grip slipper and the contact of 3# assembly pulley of hawser tip, at this moment can the manual work with the chain couple catch hold on the hanging hole of inspection cage, then the hoist engine slowly transfers the hawser, until the tight atress of chain couple, guarantee that the couple can not drop from the inspection cage. The preparation work before the examination is completed so far.

2.2.2 inspection work

(1) After the safety rope tied to the 3# pulley sliding group during auxiliary installation is detached, an inspector enters the inspection cage and ties a safety belt.

(2) And the inspector instructs the winch operator to slowly lower the cable through the interphone to check the upward bending section of the pressure steel pipe. The section of inspection process only needs to pay off the rope of the winch and does not take up the rope, so that the chain type hook is prevented from falling off due to no stress. If the chain type hook falls off due to misoperation of rope collection, the inspection cage is lifted again to return to the starting point, the chain type hook is hung again, and then the operation is repeated.

(3) When the inspection cage descends to the position right above the vertical section of the vertical shaft, the 3# pulley block is clamped by the clamping plate on the guide rail, the inspection cage is reversely lifted at the moment, the chain type hook is automatically separated from the hanging cage hanging hole under the self-weight action (if the chain type hook cannot be automatically separated, a worker in the inspection cage can throw the rope behind the lifting hook to ensure that the rope is separated from the hanging cage hanging hole), the mission of the chain type hook is finished at the moment, the 3# pulley block is automatically converted into the fixed pulley, the fixed hanging point of the inspection cage in the vertical section of the vertical shaft is started to serve as, the winch can continue to transfer the mooring rope after the hook is separated, and the transfer of the inspection cage in the vertical shaft is finished.

(4) When the inspection cage reaches the downward bending section, the inspection cage stops being placed, an inspector opens a movable seat plate in the inspection cage to sit in a sitting posture, and a fixed safety belt connected with the cage body is fastened. Then command hoist engine operator to continue slowly to transfer the inspection cage, the inspection person can hand the pole and ensure that the universal wheel of inspection cage falls on the section pipe bottom of downwarping smoothly safely, carries out the inspection of downwarping section afterwards.

(5) After the inspection of the vertical section and the downward-bending section of the vertical shaft is finished, the winch slowly lifts the inspection cage, when the inspection cage rises to the position right above the vertical section of the vertical shaft, after the clamping blocks arranged on the cable are connected with the 3# pulleys, the cable on the chain type hook is tied with the lifting lugs on the upper portion of the inspection cage, the cable continues to be recovered, the cable drives the clamping blocks, the clamping blocks push the 3# pulleys to upwards walk along the guide rail, and the inspection cage and the 3# pulleys finally return to the upstream end of the upward-bending section together.

(6) The inspector walks down the inspection cage and then reversely disassembles the inspection cage and the 2# and 3# pulley blocks.

(7) And closing the butterfly valve chamber and the manhole in the plant, and sealing the blind flange at the upper port of the rope channel until the inspection of the pressure steel pipe at the vertical shaft section is finished.

2.3 the main points of attention

(1) The inspection equipment should be maintained regularly to ensure that the equipment is always in good condition.

(2) Before the pressure steel pipe is checked, the reliability of a winch and a check cage is checked, and cable lubrication is performed. The sufficient quantity of the interphone is ensured. And the wheels of the inspection cage need to be cleaned before entering the steel tube.

(3) The assembly pulley and the installation and the disassembly of the inspection cage are carried out at the front end of the upper bending section, the deep well is arranged below the inspection cage, equipment and personnel entering the pressure steel pipe must tie a safety rope, and the safety rope is connected with a ground anchor in the valve chamber through the manhole. If the temporary protective net can be added on the side near the air, the temporary protective net is better.

(4) Absolute safety measures should be taken throughout the inspection process to avoid any object falling. All the personnel entering the steel pipe must wear the working clothes and the safety helmet. Flashlights, headlights, intercoms, kits, etc. that are carried about must be equipped with safety cords and securely connected to the inspection cage or the human body.

(5) Any lifting action of the inspection cage is issued by an inspector in the inspection cage to a winch operator through the interphone, the winch operator is instructed to control the lifting of the inspection cage, and the winch operator must execute the lifting action strictly according to instructions. The descending process of the inspection cage, when the operation is to the down-bending section, the inspector should pay close attention to the lower part, and the long rod is held by hand to adjust the direction of the inspection cage, so that the universal wheels are ensured to contact with the wall of the pressure steel pipe firstly. When the inspection cage is recovered and accepted, an inspector needs to pay close attention to the distance between the 3# pulley block and the 2# pulley block to prevent the 3# pulley block and the 2# pulley block from colliding with each other, so that the inspector commands a winch operator to stop the winch to recover the cable rope when the two blocks have a certain safety distance, then the two blocks carry out one-time deep communication through the interphone to ensure that the winch operator clearly understands that the inspection cage is about to reach a terminal point, the cable rope is continuously recovered after the communication is carried out, and the winch is stopped when the distance between the 3# pulley block and the 2# pulley block is only 0.5 m.

(6) During the inspection process, inspectors of the upper bent section and the vertical section of the vertical shaft adopt standing postures, and inspectors of the lower bent section adopt sitting postures. The inspector needs to tie the sling type safety belt out of the whole process (the safety belt is tied on the lifting lug of the inspection cage), and the fixed safety belt is tied on the lower bent pipe section.

Claims

1. A device for hoisting a steel lining inspection cage at a vertical shaft section of a water diversion type hydropower station is characterized by mainly comprising a guide rail, a pulley block and a cable; the pulley block comprises a 1# pulley block, a 2# pulley block and a 3# pulley block; the cable sequentially passes through the pulley blocks; the 3# pulley block is arranged on the guide rail in a matched mode.

2. The device for hoisting the steel lining inspection cage for the vertical shaft section of the diversion type hydropower station according to claim 1, characterized in that: the guide rail is arranged on the vertical surface of the vertical shaft upper bending section along the upper wall of the pressure steel pipe and positioned on the central axis of the pipeline.

3. The device for hoisting the steel lining inspection cage of the vertical shaft section of the diversion hydropower station according to claim 2, is characterized in that: the 1# pulley block is fixedly arranged in the winch chamber and positioned above an opening at the upper end of the cable channel steel pipe, and the cable is guided into the cable channel steel pipe through the 1# pulley block and enters the horizontal section at the upstream end of the upward bending section of the vertical shaft; the cable channel steel pipe is vertically communicated with the winch room and the shaft upward bending section, and the upper end of the cable channel steel pipe is provided with a detachable high-strength steel blind flange.

4. The device for hoisting the steel lining inspection cage for the vertical shaft section of the diversion type hydropower station according to claim 3, characterized in that: the 2# pulley block is arranged at an opening at the lower end of the cable channel steel pipe, and the cable is led into the 3# pulley block through the 2# pulley block after coming out of the cable channel steel pipe.

5. The device for hoisting the steel lining inspection cage of the vertical shaft section of the diversion hydropower station according to claim 4, is characterized in that: the 3# pulley block comprises a pair of walking main wheels, a walking auxiliary wheel, a pair of pulleys and 1 chain type hook, the walking main wheels are located at the upper portion of the pulley block, the walking auxiliary wheel is located at the lower portion of the pulley block, the pair of pulleys and the walking auxiliary wheel are coaxial and are respectively arranged on two sides of the walking auxiliary wheel, and the 1 chain type hook is connected to the bottom of the pulley block.

6. The device for hoisting the steel lining inspection cage of the vertical shaft section of the diversion hydropower station according to claim 5, is characterized in that: the guide rail is the high-strength steel of type of falling T, and the guide rail pterygoid lamina is parallel with the section roof of going up the bend, and the web carries out the opening full weld with the section roof of going up the bend, and the pterygoid lamina both sides symmetry of guide rail lower extreme is widened and is formed the both sides board that the cardboard blocked 3# assembly pulley.

7. The device for hoisting the steel lining inspection cage of the vertical shaft section of the diversion hydropower station according to claim 6, is characterized in that: and beveling the upper end head and the lower end head of the guide rail.

8. The device for hoisting the steel lining inspection cage for the vertical shaft section of the diversion type hydropower station according to claim 7, characterized in that: the diameter of the cable channel steel pipe is 400mm.

9. The device for hoisting the steel lining inspection cage of the vertical shaft section of the diversion type hydropower station according to claim 8, characterized in that: the mooring rope is provided with a clamping block.