Supporting table for detecting inner wall of pressure steel pipe of hydropower station

Abstract

The utility model discloses a hydropower station pressure steel pipe inner wall detection supporting table, which comprises a lower half part (2) and an upper half part (3), the lower half part (2) is formed by arranging and overlapping a plurality of cylindrical inflatable columns (4) in the front-back direction, and the whole vertical section of the lower half part (2) is semicircular; the upper half part (3) is formed by stacking multiple layers of square inflatable blocks (5), and the overall dimensions of the multiple layers of square inflatable blocks (5) are gradually reduced from bottom to top, so that operation steps (9) are formed on the periphery. The supporting table for detecting the inner wall of the pressure steel pipe of the hydropower station is formed by assembling the lower half inflatable cushion and the upper half inflatable cushion which are in specific shapes, is simple, flexible, safe and reliable, and can adapt to pressure steel pipes with different diameters.

Description

Technical Field

[0001] The utility model belongs to the field of water conservancy projects, and particularly relates to a detection support platform for the inner wall of a penstock of a hydropower station. Background Technique

[0002] The penstock of a hydropower station is an important part of the water conveyance structure in water conservancy and hydropower projects. During use, it is under great internal water pressure and also bears the impact of dynamic water pressure. In order to ensure the safe operation of the penstock, maintenance personnel need to regularly conduct quality inspections on the inner wall of the penstock and evaluate the cracks and corrosion on its surface. Since the inner diameter of the penstock of a hydropower station is relatively large, usually between 2 and 12 meters, when manually entering the pipe for inspection, a support device is required for observing the upper half of the inner wall. The existing support devices mainly adopt the method of erecting scaffolding, which has the characteristics of long erection time, high safety risk, and high erection cost.

[0003] Based on the above situation, there is an urgent need for a simple, flexible, safe and reliable detection support device in the detection operation of the penstock of a hydropower station. Content of the Utility Model

[0004] In order to solve some or certain problems existing in the above-mentioned prior art, the purpose of the utility model is to provide a detection support platform for the inner wall of a penstock of a hydropower station.

[0005] The detection support platform for the inner wall of a penstock of a hydropower station according to the utility model includes a lower half and an upper half. The lower half is formed by stacking multiple cylindrical inflatable columns arranged in the front-back direction, and the overall vertical section is semicircular; the upper half is formed by stacking multiple layers of square inflatable blocks, and the outer dimensions of the multiple layers of square inflatable blocks gradually decrease from bottom to top, thereby forming an operation ladder around.

[0006] Preferably, between multiple cylindrical inflatable columns, between multiple layers of square inflatable blocks, and between the topmost inflatable column and the bottommost inflatable block, Velcro is used for bonding.

[0007] Preferably, magnetic attraction blocks are connected to several inflatable columns on the periphery of the lower half for fixing with the inner wall of the penstock. Further, loop buckles are provided on the front and rear end faces of each inflatable column and each inflatable block, and the loop buckles are connected by ropes, and the ends of the ropes are connected to the magnetic attraction blocks.

[0008] Preferably, several layers of the multiple layers of square inflatable blocks are formed by splicing multiple square inflatable blocks.

[0009] Preferably, the overall height of the lower half is 2 - 5m, the overall height of the upper half is 2 - 4m, and the front-back length of the lower half and the upper half is 3 - 5m.

[0010] Preferably, it further includes an auxiliary inflation step, which is arranged beside one end face of the lower half. The inspector can reach the upper half by stepping on the auxiliary inflation step.

[0011] The inner wall inspection support platform of the penstock of the hydropower station of the utility model is assembled by the lower half and the upper half air cushions with specific shapes, which is simple, flexible, safe and reliable, and can adapt to penstocks with different diameters. Description of the Drawings

[0012] Figure 1 It is a schematic diagram of the overall structure of an inner wall inspection support platform of a penstock of a hydropower station according to the utility model.

[0013] Figure 2 is Figure 1 A schematic diagram of the external structure of the inner wall inspection support platform of the penstock of the hydropower station shown.

[0014] Description of the reference numerals: 1 - penstock, 2 - lower half, 3 - upper half, 4 - inflation column, 5 - inflation block, 6 - magnetic attraction block, 7 - loop buckle, 8 - rope, 9 - operation ladder. Detailed Description of the Embodiment

[0015] The embodiments of the utility model will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model and should not be construed as a limitation of the utility model.

[0016] As Figure 1-2 shown, this embodiment provides an inner wall inspection support platform for a penstock of a hydropower station, which includes a lower half 2 and an upper half 3. The lower half 2 is formed by stacking multiple cylindrical inflation columns 4 in the front - rear direction (the radial direction of the penstock 1), and the overall vertical section is semicircular; the upper half 3 is formed by stacking multiple layers of square inflation blocks 5, and the outer dimensions of the multiple layers of square inflation blocks 5 gradually decrease from bottom to top, so as to form an operation ladder 9 around.

[0017] Specifically, between multiple cylindrical inflation columns 4, between multiple layers of square inflation blocks 5, and between the top - most inflation column 4 and the bottom - most inflation block 5, magic tapes are used for bonding.

[0018] In a specific case, magnetic attraction blocks 6 are connected to some of the inflatable columns 4 on the outer periphery of the lower half 2 to fix to the inner wall of the penstock 1, so as to prevent the sliding of the support platform during the detection operation. The suction force of the magnetic attraction blocks 6 should be set appropriately and can be lifted by normal human force. In addition, in order to improve the stability of the overall support platform, loop buckles 7 are provided on the front and rear end faces of each inflatable column 4 and each inflatable block 5, and the loop buckles 7 are connected by ropes 8, and the end of the rope 8 is connected to the magnetic attraction block 6.

[0019] In a specific case, several layers of the multi-layer square inflatable blocks 5 can be formed by splicing multiple square inflatable blocks 5. Especially for the larger-sized lower layer, it is spliced by two square inflatable blocks 5 of the same size, and the adjacent sides can be spliced by Velcro, so as to facilitate transportation and assembly.

[0020] In a specific case, the overall height of the lower half 2 is 2 - 5 m, the overall height of the upper half 3 is 2 - 4 m, and the front and rear lengths of each layer of the lower half 2 and the upper half 3 are the same, usually 3 - 5 m. The specific heights of the lower half 2 and the upper half 3 can be adjusted by increasing or decreasing the number of layers of the inflatable columns 4 and the inflatable blocks 5 according to the diameter of the penstock to be detected. The specific sizes of the inflatable columns 4 and the inflatable blocks 5 can be set arbitrarily, and the diameters of the inflatable columns 4 in different layers can be the same or different. The height of each layer of the inflatable block 5 is preferably between 0.3 - 0.5 m.

[0021] In addition, the inner wall detection support platform of the hydropower station penstock according to the present utility model may further include an auxiliary inflatable step (not shown in the figure), which is arranged beside one end face of the lower half 2, and the detection personnel can reach the upper half 3 by stepping on the auxiliary inflatable step. The structure of the auxiliary inflatable step is similar to that of the upper half 3 and will not be elaborated here.

[0022] The inner wall detection support platform of the hydropower station penstock of the present utility model is assembled by the lower half 2 and the upper half 3 with specific shapes. The lower half 2 is formed by multiple cylindrical inflatable columns 4 into a semi-cylindrical shape, so as to closely fit with the inner wall of the penstock 1 to form a support, and can easily move back and forth on the inner wall of the penstock 1, facilitating the detection personnel to detect the inner wall of the penstock 1 in segments. The upper half 3 is formed by multiple layers of square inflatable blocks 5 into an operation ladder 9, and the detection personnel can stand on the operation ladders 9 at different heights to detect different parts of the inner wall of the penstock 1.

[0023] The inflatable columns 4, the inflatable blocks 5 and the auxiliary inflatable step in the present utility model can all be surrounded by airtight cloth, and the inflatable columns 4 and the inflatable blocks 5 are both provided with air inlets (air outlets). Inflation and splicing are carried out before the detection operation, and deflation is carried out after the operation is completed, so as to conveniently move out of the penstock 1.

[0024] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A support platform for detecting the inner wall of a pressure steel pipe of a hydropower station, characterized in that: The utility model comprises a lower part (2) and an upper part (3), wherein the lower part (2) is formed by a plurality of cylindrical inflatable columns (4) arranged and stacked in a front-to-back direction, and the vertical cross section is semicircular as a whole; the upper part (3) is formed by a plurality of stacked square inflatable blocks (5), and the outer dimensions of the plurality of square inflatable blocks (5) gradually decrease from bottom to top, thereby forming an operating ladder (9) around the four sides.

2. The hydropower station penstock inner wall detection support platform according to claim 1, characterized in that: Velcro is used to bond the plurality of cylindrical inflatable columns (4), the plurality of square inflatable blocks (5), and the uppermost inflatable columns (4) and the lowermost inflatable blocks (5) together.

3. The hydropower station penstock inner wall detection support platform according to claim 1, characterized in that: A plurality of inflatable columns (4) on the periphery of the lower half (2) are connected to magnetic blocks (6) for fixing to the inner wall of the pressure steel pipe (1).

4. The hydropower station penstock inner wall detection support platform according to claim 3, characterized in that: Each inflatable column (4) and each inflatable block (5) is provided with a ring buckle (7) on the front and rear end surfaces, and the ring buckles (7) are connected by a rope (8), and the end of the rope (8) is connected to the magnetic attraction block (6).

5. The hydropower station penstock inner wall detection support platform according to claim 1, characterized in that: Several layers of the multi-layer square inflatable blocks (5) are formed by splicing a plurality of square inflatable blocks (5).

6. The hydropower station penstock inner wall detection support platform according to claim 1, characterized in that: The overall height of the lower part (2) is 2-5m, the overall height of the upper part (3) is 2-4m, and the front-to-back length of the lower part (2) and the upper part (3) is 3-5m.

7. The hydropower station penstock inner wall detection support platform according to claim 1, characterized in that: It also includes an auxiliary air-inflating step, which is arranged beside one end surface of the lower half (2), and the inspector can reach the upper half (3) by stepping on the auxiliary air-inflating step.

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