CN216006866U - Diversion type hydropower station pressure steel pipe vertical shaft section inspection cage - Google Patents
Diversion type hydropower station pressure steel pipe vertical shaft section inspection cage Download PDFInfo
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- CN216006866U CN216006866U CN202121761159.7U CN202121761159U CN216006866U CN 216006866 U CN216006866 U CN 216006866U CN 202121761159 U CN202121761159 U CN 202121761159U CN 216006866 U CN216006866 U CN 216006866U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
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Abstract
The utility model discloses a diversion type hydropower station pressure steel pipe shaft section inspection cage which comprises a square steel frame cage body, wherein lifting lugs are arranged at the top of the square steel frame cage body, a bottom net is arranged at the bottom of the square steel frame cage body, and foldable support frames are arranged on the outer side surfaces of the periphery of the square steel frame cage body; the four corners of the left outer side surface of the square steel frame cage body are provided with universal wheels, and the left inner side surface is provided with a foldable seat plate. The inspection cage is lifted in the steel pipe shaft section through the winch, an inspector stands (in the vertical section) or sits (in the downward bending section) in the inspection cage, a safety belt is tied in the whole process, and the inner wall of the steel pipe shaft can be inspected in a mode of visual inspection, photographing, video recording or small hammer knocking. The utility model has simple structure, provides a novel inspection mode for maintenance of the penstock vertical shaft section of the diversion type hydropower station, and has the characteristics of convenience, practicability, strong operability, safety and reliability.
Description
Technical Field
The utility model belongs to an underground inspection device, and particularly relates to a diversion type hydropower station penstock shaft section inspection cage.
Background
The pressure steel pipe vertical shaft section of the water diversion type hydropower station is characterized by vertical arrangement and large height, so that the inspection difficulty is large during maintenance, many hydropower stations do not carry out conventional inspection on the pressure steel pipe vertical shaft section, and potential safety hazards existing in a vertical shaft which runs for years cannot be discovered in time, such as abrasion, hollowing, deformation and the like of the steel pipe.
Disclosure of Invention
The utility model aims to provide a diversion type hydropower station pressure steel pipe shaft section inspection cage which is simple in structure, convenient, practical, strong in operability, safe and reliable.
In order to solve the technical problems, the utility model adopts the following technical scheme:
a diversion type hydropower station pressure steel pipe vertical shaft section inspection cage comprises a square steel frame cage body, wherein lifting lugs are arranged at the top of the square steel frame cage body, a bottom net is arranged at the bottom of the square steel frame cage body, and foldable support frames are arranged on the outer side surfaces of the periphery of the square steel frame cage body; the four corners of the left outer side surface of the square steel frame cage body are provided with universal wheels, and the left inner side surface is provided with a foldable seat plate.
And a foldable support frame is symmetrically arranged on each outer side surface of the cage body.
Each foldable support frame comprises two support rods, a support bracket and a telescopic support wheel, the two support rods are arranged in parallel, one end of each support rod is hinged to the outer side surface of the cage body, the other end of each support rod is hinged to the vertex angle of the support bracket, and the bottom angle of the support bracket is also hinged to the outer side surface of the cage body; the telescopic supporting wheel comprises a top wheel and a telescopic supporting rod, the top wheel is installed at the front end of the telescopic supporting rod through a bearing, and the telescopic supporting rod is installed on the supporting bracket through a sleeve.
The telescopic supporting rod is mainly formed by sleeving two rectangular rods and 3 sections of sleeves. The two sleeves at the front end are rectangular sleeves, the sleeve at the rear end is a circular sleeve, a compression spring is arranged in the circular sleeve, and the tightness of the spring is adjusted by a screw rod at the end part of the spring.
The square steel frame cage body is assembled by all detachable steel frames.
Aiming at the problems existing in the inspection of the pressure steel pipe shaft section of the existing diversion type hydropower station, the inventor designs and manufactures a diversion type hydropower station pressure steel pipe shaft section inspection cage which comprises a square steel frame cage body, wherein a lifting lug is arranged at the top of the square steel frame cage body, a bottom net is arranged at the bottom surface of the square steel frame cage body, and foldable support frames are arranged on the outer side surfaces of the periphery of the square steel frame cage body; the four corners of the left outer side surface of the square steel frame cage body are provided with universal wheels, and the left inner side surface is provided with a foldable seat plate. The inspection cage is lifted in the vertical shaft through the winch arranged above the vertical shaft, an inspector stands (in the vertical section) or sits (in the downward bending section) in the inspection cage, a safety belt is tied in the whole process, and the inner wall of the steel pipe of the vertical shaft can be inspected in a mode of visual inspection, photographing, video recording or small hammer knocking. The utility model has simple structure, provides a novel inspection mode for maintenance of the penstock vertical shaft section of the diversion type hydropower station, and has the characteristics of convenience, practicability, strong operability, safety and reliability.
Drawings
Fig. 1 is a schematic structural view (front outer side surface) of a diversion type hydropower station pressure steel pipe shaft section inspection cage (a foldable support frame is retracted and a seat plate is opened) of the utility model.
Fig. 2 is a schematic structural view (front outer side surface) of a diversion type hydropower station pressure steel pipe shaft section inspection cage (a foldable support frame is opened, and a seat plate is folded) of the utility model.
Fig. 3 is a schematic structural view (left outer side surface) of a diversion type hydropower station pressure steel pipe shaft section inspection cage (a foldable support frame is retracted and a seat plate is opened) of the utility model.
FIG. 4 is a schematic structural diagram of a support frame of the pressure steel pipe vertical shaft section inspection cage of the water diversion type hydropower station.
Fig. 5 is a schematic sectional view of the use state (in the vertical section of the shaft) of the inspection cage of the pressure steel pipe vertical shaft section of the water diversion type hydropower station.
FIG. 6 is a schematic cross-sectional view of the use state (in a vertical underground bent section) of the inspection cage of the pressure steel pipe vertical shaft section of the diversion type hydropower station.
Fig. 7 is a schematic view of the use state of the penstock shaft section inspection cage of the diversion type hydropower station.
In the figure: the lifting lug is 1, 2 end nets, 3 universal wheels, 4 collapsible seat boards, 5 support rods, 6 supporting brackets, 7 top wheels, 8 telescopic supporting rods, 9 vertical shaft steel linings, 10 vertical shafts, 11 windlasses, 12 mooring ropes, 13 inspection cages, 14 front end sleeves, 15 rear end sleeves, 16 compression springs and 17 screw rods.
Detailed Description
Primary and secondary water diversion type hydropower station pressure steel pipe vertical well section inspection cage basic structure
As shown in the figure, the diversion type hydropower station penstock vertical shaft section inspection cage comprises a square steel frame cage body, wherein lifting lugs 1 are arranged at the top of the square steel frame cage body, bottom nets 2 are arranged at the bottom of the square steel frame cage body, and foldable support frames are symmetrically arranged on the outer side surfaces of the periphery of the square steel frame cage body; the four corners of the left outer side surface of the square steel frame cage body are provided with universal wheels 3, and the left inner side surface is provided with a foldable seat plate 4. The foldable support frame comprises two support rods, a support bracket 6 (similar to a rectangular bracket in structure) and a telescopic support wheel, wherein the two support rods are arranged in parallel, one end of each support rod 5 is hinged to the outer side surface of the cage body, the other end of each support rod is hinged to the vertex angle of the support bracket, and the bottom angle of the support bracket is hinged to the outer side surface of the cage body; the telescopic supporting wheel comprises a top wheel and a telescopic supporting rod, the top wheel 7 is installed on the top end of the telescopic supporting rod through a bearing, the telescopic supporting rod is mainly formed by two rectangular rods and 3 sections of sleeves in a sleeved mode, the two sleeves at the front end are rectangular sleeves, the sleeve at the rear end is a circular sleeve, and a compression bullet is arranged in the circular sleeve.
Second, design of inspection scheme for vertical shaft section of penstock of water diversion type hydropower station
In a certain constructed water-diversion type hydropower station, the inner diameter of a steel liner 9 of a pressure steel pipe vertical shaft is 3.6m, and the height of the vertical shaft 10 is about 186 m. The inventor adopts the hoist engine to go up and down above-mentioned inspection cage, and the inspection personnel stand (in the vertical section) or sit (in the section of bending down) in the inspection cage, and the safety belt is good in the whole journey, adopts the mode of visual, shooing, video recording or bobbing to inspect the steel pipe inner wall of shaft to the difficult problem of diversion formula power station penstock shaft inspection has been solved.
2.1 shaft section inspection plan details arrangement and characteristics thereof
1) The hoist 11 is arranged in a machine room above the shaft section and the cable 12 (steel cable with sufficient safety factor) is passed into the shaft by setting a vertical steel tube. The diameter of the steel pipe is 200mm, the pipe diameter is small, the opening of the intersection of the main pipe (pressure steel pipe) and the pressure steel pipe can be prevented from being too large, the disordered state of water flow is reduced, the safety of the joint is enhanced, and the head loss is reduced to the maximum extent.
2) When actually making the square steel frame cage body, should designing for the equipment cage that can disassemble for convenient transportation, installation, the cage body is made detachable structure by each face steelframe promptly, and each face steelframe is assembled and is constituteed the cage body when needing to use, idle when accomodating reverse disassemble can, so can solve the problem that its volume is too big difficult to advance, go out pipeline under pressure, of course, because simple structure part is few, also can transport all parts to on-the-spot assembly. The inspection cage assembly enters the pressure steel pipe from a ball valve inlet hole of a downstream factory building, is assembled in the branch pipe (or the branch pipe), and then is pushed to the lower part of the vertical shaft.
3) Checking the stability of the cage: the inspection cage gets into in the shaft by the shaft lower part, and when it got into the vertical section completely, the staff in the inspection cage opened the collapsible support frame that the cage set up all around, for preventing the swing of inspection cage, should adjust screw length and make the top wheel push up on the pressure steel pipe wall with suitable dynamics, but should not push up and get the tension so that the spring compression allowance is not enough and make the support frame lose the retractility.
4) Inspecting the characteristics of the cage: can carry 1 to 2 people. Because the universal wheel is arranged below the inspection cage (on the left outer side surface of the figure), when the inspection cage runs at the downward bending section, the universal wheel of the inspection cage is automatically positioned on the wall of the lower pipe under the action of the dead weight of an inspector and the cage body, and the inspection cage can stably and slowly walk by matching with the handheld rod. The front ends of the foldable support frames on the periphery are provided with the top wheels, so that when the foldable support frames are propped against the wall of the pressure steel pipe, the swinging of the inspection cage during the operation of the vertical section can be avoided, and the lifting of the inspection cage is not influenced. The telescopic supporting rod of the telescopic supporting wheel is provided with the spring, so that the arm length of the telescopic supporting wheel can be freely stretched, and the inspection cage can be prevented from being accidentally clamped by a steel pipe.
2.2 checking the Main operating Steps
Firstly, a butterfly valve of a butterfly valve chamber is closed, water in a steel pipe is emptied, an inlet hole in the butterfly valve chamber is opened, and an inlet hole of a ball valve in a plant is opened, so that natural wind is generated in a 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.
And secondly, feeding the inspection cage fittings into the branch pipe from a ball valve inlet hole in front of the plant unit, and assembling the inspection cage fittings in the branch pipe or the branch pipe.
And thirdly, pushing the assembled inspection cage to the lower part of the vertical shaft.
And fourthly, opening a sealing cover of a cable channel (DN200 steel pipe) in the machine room of the winch, and lowering the cable of the winch.
The downward cable is connected with the inspection cage safely, after the inspection is firm, an inspector enters the inspection cage, the seat plate is opened, and the safety belt (the fixed safety belt and the sling type safety belt) is tied in a lying position.
Sixthly, the inspection cage 13 is lifted slowly by the winch, an inspector holds a rod (the length is about 1.5m, the end is a rubber head to increase friction with the steel pipe wall) and puts the rod on the pipe wall to move slowly along with the inspection cage, and the direction of the inspection cage is adjusted if necessary, so that the inspection cage can walk more stably. When the inspection cage is completely positioned in the vertical section of the shaft, the fixed safety belt is opened, the inspector stands up and the 4 support frames for preventing the cage from swinging are opened.
And seventhly, the inspector starts to inspect the vertical shaft and performs necessary photographing, knocking, recording and other works.
And after the shaft is inspected, slowly lowering the inspection cage. When the inspection cage reaches the downward bending section, the inspection cage stops being placed, the support frame is retracted by an inspector, and then the inspection cage is seated in a sitting posture and a fixed safety belt is fastened.
Ninthly, the inspection cage continues to slowly descend, and the inspector holds the rod in the descending process to adjust the direction of the cage and ensure that one side of the cage with the universal wheels firstly contacts the steel pipe below. If the cage can not be lifted again, the cage is descended again after the direction is adjusted until the cage is successfully lifted.
And (3) after the reverse (R) inspection cage is safely lowered to the lower part of the shaft (the tail end of the downward bending section), detaching the steel cable and the cage connecting piece, pushing the cage to the original installation position, and disassembling and withdrawing the penstock.
2.3 examination of the main points of attention
The equipment is inspected, and the equipment is maintained regularly to ensure that the equipment is always in a good state.
Secondly, before the pressure steel pipe is checked, the reliability of a winch and a check cage is checked, cable lubrication is performed, and the sufficient electric quantity of the interphone is ensured. And the wheels of the inspection cage need to be cleaned before entering the steel pipes.
Absolute safety measures should be taken in the whole inspection process to avoid any object falling. The person who enters 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.
And fourthly, any lifting action of the inspection cage is issued to a winch operator by an inspector in the inspection cage through the interphone, the winch operator is instructed to control the lifting of the inspection cage, and the winch operator must execute the operation according to the instruction strictly. In the ascending process of the inspection cage, an inspector needs to pay attention to whether the pressure steel pipe above the pressure steel pipe is obviously deformed or not at any time, if so, the inspection cage needs to stop running immediately so as to prevent the inspection cage from being clamped, the inspection cage can continue running after passing through the inspection cage, and otherwise, any two adjacent support frames need to be retracted and then continue running. When the operation is near the top of the shaft, the inspector should pay close attention to the top distance to prevent the inspection cage from colliding with the top. During the descending process of the inspection cage, when the inspection cage runs to a downward bending section, an inspector needs to pay close attention to the lower part to ensure that the universal wheels contact the wall of the pressure steel pipe firstly.
In the checking process, the checker should use sitting posture to check the lower bent pipe section, and use standing posture to check the vertical section. The inspector needs to tie the sling type safety belt outside the whole process, and needs to tie a fixed safety belt at the lower bent pipe section.
Claims (5)
1. The utility model provides a diversion formula power station penstock shaft section inspection cage, includes the square steelframe cage body, its characterized in that: the top of the square steel frame cage body is provided with a lifting lug, the bottom surface of the square steel frame cage body is provided with a bottom net, and the outer side surfaces of the periphery of the square steel frame cage body are provided with foldable support frames; four corners of the left outer side surface of the square steel frame cage body are provided with universal wheels, and the left inner side surface is provided with a foldable seat plate.
2. The penstock riser section inspection cage of claim 1, characterized in that: and the outer side surfaces of the periphery are symmetrically provided with a foldable support frame.
3. The penstock riser section inspection cage of claim 2, characterized in that: the foldable support frame comprises two support rods, a support bracket and a telescopic support wheel, wherein the two support rods are arranged in parallel, one end of each support rod is hinged to the outer side surface of the cage body, the other end of each support rod is hinged to the vertex angle of the support bracket, and the bottom angle of the support bracket is also hinged to the outer side surface of the cage body; the telescopic supporting wheel comprises a top wheel and a telescopic supporting rod, the top wheel is installed at the front end of the telescopic supporting rod through a bearing, and the telescopic supporting rod is installed on the supporting bracket through a sleeve.
4. The penstock riser section inspection cage of claim 3, characterized in that: the telescopic supporting rod is mainly formed by sleeving two rectangular rods and 3 sections of sleeves, the two sleeves at the front end are rectangular sleeves, the sleeve at the rear end is a circular sleeve, and a compression spring is arranged in the sleeve.
5. The penstock riser section inspection cage of claim 1, characterized in that: the square steel frame cage body is assembled by all detachable steel frames.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121761159.7U CN216006866U (en) | 2021-07-30 | 2021-07-30 | Diversion type hydropower station pressure steel pipe vertical shaft section inspection cage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121761159.7U CN216006866U (en) | 2021-07-30 | 2021-07-30 | Diversion type hydropower station pressure steel pipe vertical shaft section inspection cage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216006866U true CN216006866U (en) | 2022-03-11 |
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ID=80589651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121761159.7U Active CN216006866U (en) | 2021-07-30 | 2021-07-30 | Diversion type hydropower station pressure steel pipe vertical shaft section inspection cage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216006866U (en) |
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2021
- 2021-07-30 CN CN202121761159.7U patent/CN216006866U/en active Active
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