Installation and construction process for inclined shaft pressure steel pipe of pumped storage power station

Abstract

The invention provides a pumped storage power station inclined shaft pressure steel pipe installation construction technology, belongs to the technical field of high-end equipment manufacturing, and solves the technical problem of pressure steel pipe installation. Comprising a hoistway, two winches are installed in the hoistway, main steel wire ropes are arranged on the two winches, a plurality of pressure steel pipe bodies are installed at the lower end in the hoistway, a connecting column is arranged in the pressure steel pipe body at the top, a clamping mechanism for the pressure steel pipe bodies is arranged on the surface of the connecting column, and the hoistway is arranged in an L shape; a plurality of carrier rollers are installed at the bottom in the shaft, the pressure steel pipe body is slidably connected to the surfaces of the carrier rollers, and one ends of the two main steel wire ropes are arranged at the top of the connecting column. According to the pressure steel pipe convenient to move, through the arrangement of the connecting column, the interior of the pressure steel pipe body can be conveniently fixed, so that the pressure steel pipe body is more convenient to move, under the action of the two winches, the use efficiency of the winches can be effectively improved, and meanwhile, the safety guarantee of inclined shaft installation construction is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of high-end equipment manufacturing, relates to the installation of penstocks, and particularly relates to a construction technology for the installation of inclined shaft penstocks in a pumped storage power station. Background Art

[0002] A pumped storage power station is an important power storage and regulation facility. The inclined shaft is a key component in the power station structure. The inclined shaft is mainly used to connect the upper reservoir and the lower reservoir and plays a role in water flow transportation. The inclined shaft is responsible for guiding water from the upper reservoir to the lower reservoir. During the power generation process, water flows down from the upper reservoir and drives the turbine generator to generate electricity. During the low load period of the power grid, the power station can use the excess electric energy to pump water from the lower reservoir back to the upper reservoir to achieve energy storage. The inclined shaft helps the power station quickly adjust the power generation according to the power grid demand and provides flexible power support. Steel pipes usually need to be installed during the construction process of the inclined shaft of a pumped storage power station.

[0003] During the installation process of the inclined shaft penstock in a pumped storage power station, hoisting equipment is needed to transport the steel pipe to the installation position, ensure the accurate positioning of each section of the steel pipe, and make it conform to the inclination angle of the inclined shaft. According to the design requirements, the steel pipes are connected, usually by welding, flange connection, etc. During welding, attention should be paid to the welding quality to avoid cracks and defects. After the installation is completed, a pressure test is carried out to ensure that the steel pipe can withstand the designed working pressure.

[0004] However, in the traditional installation of the inclined shaft section of the penstock in some existing pumped storage power stations, 1 winch is arranged for construction. When 1 winch is arranged for construction, the wire rope needs to increase the pulley ratio. Due to the heavy inclined shaft penstock, the safety risk is relatively large. The increase in the pulley ratio results in the slow lowering of the inclined shaft steel pipe and the slow rising of the trolley, and high-efficiency construction cannot be achieved. Moreover, during the installation process of the inclined shaft penstock, it is usually not convenient to align the inclined shaft penstock, resulting in more troublesome subsequent welding, thus increasing the workload. Therefore, the above problems need to be solved. Summary of the Invention

[0005] The object of the present invention is to address the above problems existing in the prior art and propose an installation device for the inclined shaft penstock of a pumped storage power station, including a shaft. Two winches are installed inside the shaft. Main wire ropes are arranged on both of the two winches. A plurality of penstock bodies are installed at the lower end inside the shaft. A connecting column is arranged inside the penstock body at the top. A clamping mechanism for the penstock body is provided on the surface of the connecting column. The shaft is arranged in an L shape. A plurality of idlers are installed at the bottom inside the shaft. The penstock body is slidably connected to the surfaces of the plurality of idlers. One end of each of the two main wire ropes is arranged at the top of the connecting column.

[0006] Through the setting of the connecting column, it is convenient to fix the inside of the penstock body, making it more convenient to move the penstock body. At the same time, under the action of two winches, the use efficiency of the winches is effectively improved, and the safety guarantee of the inclined shaft installation construction is improved. Preferably, a plurality of support plates are arranged on the surface of the connecting column. Connecting blocks are fixedly connected to one side of the plurality of support plates close to each other. Anti-slip patterns are arranged on the surfaces of the plurality of support plates. A sliding mechanism for sliding a plurality of support plates is arranged inside the connecting column.

[0007] It is used to limit the sliding of a plurality of support plates, so that a plurality of support plates can support the inside of the penstock body and limit the movement of the penstock body.

[0008] Furthermore, the sliding mechanism includes a lifting plate. A layer plate is fixedly connected to the center inside the connecting column. There are two lifting plates. Both of the two lifting plates are slidably connected inside the connecting column. The two lifting plates are respectively arranged on both sides of the layer plate. A lead screw is rotatably connected to the center inside the connecting column. The lead screw penetrates through the layer plate. The two ends of the lead screw are respectively rotatably sleeved at both ends of the connecting column. The lead screw is rotatably sleeved inside the two lifting plates. Both of the two lifting plates are matched with the surface of the lead screw. A motor is installed on the top of the connecting column. The output end of the motor is fixedly connected to one end of the lead screw. A protective cover is fixedly connected to the top of the connecting column. The protective cover is sleeved on the surface of the motor. A plurality of dust-proof nets are arranged on the surface of the protective cover.

[0009] It is used to rotate the lead screw, so as to facilitate the sliding of the two lifting plates close to or away from each other.

[0010] Preferably, a plurality of vertical grooves are vertically opened on the surface of the connecting column. The plurality of vertical grooves are respectively arranged at the upper and lower ends of the layer plate. The plurality of vertical grooves are evenly distributed in a ring shape. Fixing blocks are slidably connected inside the plurality of vertical grooves. The fixing blocks are respectively fixedly connected to the arc surfaces of the two lifting plates. Support rods are hinged inside the plurality of fixing blocks. The plurality of support rods are in pairs of two. One end of each pair of support rods is respectively hinged to the upper and lower ends of the support plate. Two fixing rods are fixedly connected to the top of the connecting column. Connectors are installed at the ends of the two fixing rods away from each other. The same second steel wire rope is fixedly connected between the two connectors. One ends of the two main steel wire ropes are installed on the surface of the second steel wire rope.

[0011] It is used to limit the sliding of the four support plates close to or away from each other under the connection of a plurality of support rods while the two lifting plates move relative to each other.

[0012] A construction process for installing the penstock in the inclined shaft of a pumped-storage power station includes the following steps: Step 1: Transport the penstock body inside the shaft. The horizontal section inside the shaft uses a transfer device to transport the penstock body, and install the connecting column inside the penstock body. Then, transfer the penstock body to the bend; Step 2: At the bend, multiple idlers can be used to slide and transport the penstock body. Under the connection of two main steel wires and the second steel wire, the penstock body is pulled through the connecting column and multiple support plates, and two winches are used to move the penstock body; Step 3: Move the connecting column between two penstock bodies, and slide multiple support plates. The multiple support plates support the inner walls of the two penstock bodies, enabling the two penstock bodies to be aligned.

[0013] Compared with the prior art, the installation of the penstock of the present invention has the following advantages: 1. In the present invention, through the setting of the connecting column, it is convenient to fix the inside of the penstock body, making it more convenient to move the penstock body. At the same time, under the action of two winches, the use efficiency of the winches is effectively improved, and the safety guarantee of the inclined shaft installation construction is improved.

[0014] 2. In the present invention, when the drive motor drives the lead screw to rotate, the two lifting plates will slide closer to each other. At this time, the angle between every two support rods will become smaller. At the same time, under the connection of multiple support rods, the four support plates will slide away from each other, and the inner wall of the penstock body will be restricted by the four support plates. Thus, when the penstock body slides inside the shaft, a traction effect can be exerted on the penstock body.

[0015] 3. In the present invention, through the action of multiple idlers, the two main steel wires are protected, preventing the main steel wires from generating excessive friction inside the shaft, thereby improving the use effect of the device.

[0016] 4. After the penstock body is placed at the bottom of the shaft, the drive motor can be used to make the multiple support plates slide closer to each other. Then, place the connecting column between the two penstock bodies at the bottom. Then, drive the motor to make the multiple support plates slide away from each other. At this time, the multiple support plates between the two penstock bodies will support the inside of the two penstock bodies, enabling the two penstock bodies to be aligned, thus facilitating the adjustment effect during installation. Description of the Drawings

[0017] Figure 1 is the internal side view of the shaft of an inclined shaft penstock installation construction process of a pumped-storage power station of the present invention; Figure 2It is a top view inside the shaft of an inclined shaft penstock installation construction process of the present invention; Figure 3 It is a front view of an inclined shaft penstock installation construction process of the present invention; Figure 4 It is a schematic diagram of the surface structure of the connecting column of an inclined shaft penstock installation construction process of the present invention; Figure 5 It is a cross-sectional view of the surface structure of an inclined shaft penstock installation construction process of the present invention; Figure 6 It is a schematic diagram of the clamping mechanism of an inclined shaft penstock installation construction process of the present invention; Figure 7 It is a schematic diagram of the internal structure of the connecting column of an inclined shaft penstock installation construction process of the present invention; Figure 8 It is a schematic diagram of the partial structure of an inclined shaft penstock installation construction process of the present invention.

[0018] In the figure, 1, shaft; 101, winch; 102, main steel wire rope; 2, penstock body; 3, idler roller; 4, connecting column; 401, fixing rod; 402, connecting piece; 403, second steel wire rope; 404, vertical groove; 405, layer board; 5, support plate; 501, connecting block; 502, support rod; 6, lifting plate; 601, fixing block; 602, lead screw; 603, motor; 7, protective cover; 701, dust-proof net. Detailed implementation manners

[0019] The following are specific embodiments of the present invention and in combination with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0020] As Figures 1-8 shown, an inclined shaft penstock installation device for a pumped storage power station includes a shaft 1. Two winches 101 are installed inside the shaft 1. Main steel wire ropes 102 are arranged on both winches 101. A plurality of penstock bodies 2 are installed at the lower end inside the shaft 1. A connecting column 4 is arranged inside the penstock body 2 at the top. A clamping mechanism for the penstock body 2 is provided on the surface of the connecting column 4. The shaft 1 is arranged in an L shape. A plurality of idler rollers 3 are installed at the bottom inside the shaft 1. The penstock body 2 is slidably connected to the surfaces of the plurality of idler rollers 3. One ends of the two main steel wire ropes 102 are arranged at the top of the connecting column 4.

[0021] Through the setting of the connecting column 4, it is convenient to fix the inside of the penstock body 2, so that it is more convenient to move the penstock body 2. At the same time, under the action of the two winches 101, the use efficiency of the winches is effectively improved, and the safety guarantee of the inclined shaft installation construction is improved.

[0022] The working principle of the present invention: A plurality of support plates 5 are arranged on the surface of the connecting column 4. Connecting blocks 501 are fixedly connected to the mutually adjacent sides of the plurality of support plates 5. Anti-slip patterns are arranged on the surfaces of the plurality of support plates 5. A sliding mechanism for sliding the plurality of support plates 5 is arranged inside the connecting column 4.

[0023] It is used to limit the sliding of the plurality of support plates 5, so that the plurality of support plates 5 can support the inside of the penstock body 2 and limit the movement of the penstock body 2.

[0024] Among them, the sliding mechanism includes a lifting plate 6. A layer plate 405 is fixedly connected to the center inside the connecting column 4. There are two lifting plates 6. Both of the two lifting plates 6 are slidably connected inside the connecting column 4. The two lifting plates 6 are respectively arranged on both sides of the layer plate 405. A lead screw 602 is rotatably connected to the center inside the connecting column 4. The lead screw 602 penetrates through the inside of the layer plate 405. Both ends of the lead screw 602 are respectively rotatably sleeved at both ends of the connecting column 4. The lead screw 602 is rotatably sleeved inside the two lifting plates 6. Both of the two lifting plates 6 are matched with the surface of the lead screw 602. A motor 603 is installed on the top of the connecting column 4. The output end of the motor 603 is fixedly connected to one end of the lead screw 602. A protective cover 7 is fixedly connected to the top of the connecting column 4. The protective cover 7 is sleeved on the surface of the motor 603. A plurality of dust-proof nets 701 are arranged on the surface of the protective cover 7.

[0025] It is used to rotate the lead screw 602, so as to facilitate the sliding of the two lifting plates 6 towards or away from each other.

[0026] Among them, a plurality of vertical grooves 404 are vertically opened on the surface of the connecting column 4. The plurality of vertical grooves 404 are respectively arranged at the upper and lower ends of the layer plate 405. The plurality of vertical grooves 404 are all annularly and evenly distributed. Fixing blocks 601 are slidably connected inside the plurality of vertical grooves 404. The plurality of fixing blocks 601 are respectively fixedly connected to the arc surfaces of the two lifting plates 6. Support rods 502 are hinged inside the plurality of fixing blocks 601. The plurality of support rods 502 are paired in twos. One end of each pair of support rods 502 is respectively hinged to the upper and lower ends of the support plate 5. Two fixing rods 401 are fixedly connected to the top of the connecting column 4. Connecting pieces 402 are installed at the mutually remote ends of the two fixing rods 401. The same second steel wire rope 403 is fixedly connected between the two connecting pieces 402. One ends of the two main steel wire ropes 102 are both installed on the surface of the second steel wire rope 403.

[0027] When the two lifting plates 6 move relative to each other, under the connection of multiple support rods 502, it is possible to limit the sliding of the four support plates 5 approaching or moving away from each other.

[0028] An installation construction process for an inclined shaft penstock of a pumped storage power station includes the following steps: Step 1: Transport the penstock body 2 inside the shaft 1. The horizontal section inside the shaft 1 transports the penstock body 2 through a transfer device, and install the connecting column 4 inside the penstock body 2. Then, transport the penstock body 2 to the corner. Step 2: At the corner, the penstock body 2 can be slidably transported through multiple idler rollers 3. Under the connection of two main steel wires 102 and the second steel wire 403, the penstock body 2 is pulled through the connecting column 4 and multiple support plates 5, and the penstock body 2 is moved through two winches 101. Step 3: Move the connecting column 4 between two penstock bodies 2, and slide multiple support plates 5. The multiple support plates 5 support the inner walls of the two penstock bodies 2 so that the two penstock bodies 2 can be aligned.

[0029] Working principle of the present invention: During actual use, the connection column 4 is provided to facilitate the fixation inside the penstock body 2, making it more convenient to move the penstock body 2. At the same time, under the action of two winches 101, the use efficiency of the winches is effectively improved, and the safety guarantee for inclined shaft installation construction is also improved. The penstock body 2 to be installed can be passed through the shaft 1, and then the penstock body 2 can be moved horizontally inside the shaft 1 by using a transfer device. The transfer device provided here is prior art. The connection column 4 is installed inside the penstock body 2. During the installation process, the connection column 4 can be first placed inside the penstock body 2, and then when the driving motor 603 drives the lead screw 602 to rotate, the two lifting plates 6 will slide closer to each other. At this time, the angle between every two support rods 502 will become smaller. At the same time, under the connection of multiple support rods 502, the four support plates 5 will slide away from each other, and the inner wall of the penstock body 2 will be restricted by the four support plates 5. Thus, when the penstock body 2 slides inside the shaft 1, a traction effect can be exerted on the penstock body 2. When the penstock body 2 passes through the bend inside the shaft 1, the penstock body 2 can be supported by multiple idler rollers 3. Subsequently, when the penstock body 2 slides on the inclined part inside the shaft 1, under the action of multiple idler rollers 3, the two main wire ropes 102 will be protected to prevent the main wire ropes 102 from generating excessive friction inside the shaft 1, thereby improving the use effect of the device. When the penstock body 2 is placed at the bottom of the shaft 1, the driving motor 603 can make the multiple support plates 5 slide closer to each other. Subsequently, the connection column 4 is placed between the two penstock bodies 2 at the bottom. Then, the driving motor 603 makes the multiple support plates 5 slide away from each other. At this time, the multiple support plates 5 between the two penstock bodies 2 will support the inside of the two penstock bodies 2, so that the two penstock bodies 2 can be aligned, facilitating the adjustment effect during installation and making the adjustment more convenient.

[0030] In summary, in the present invention, through the setting of the connection column 4, it is convenient to fix the inside of the penstock body 2, making it more convenient to move the penstock body 2. At the same time, under the action of two winches 101, the use efficiency of the winches is effectively improved, and the safety guarantee for inclined shaft installation construction is also improved.

[0031] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art of the present invention can make various modifications or supplements to the described specific embodiments or use similar methods to replace them, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A device for installing a pressure steel pipe in an inclined shaft of a pumped storage power station, comprising a shaft (1), characterized in that: Two winches (101) are installed inside the hoistway (1), and main steel wire ropes (102) are arranged on both winches (101). A plurality of pressure steel pipe bodies (2) are installed at the lower end inside the hoistway (1), and a connecting column (4) is arranged inside the pressure steel pipe body (2) at the top. A clamping mechanism for the pressure steel pipe body (2) is arranged on the surface of the connecting column (4). The hoistway (1) is arranged in an L shape, and a plurality of rollers (3) are installed at the bottom of the hoistway (1). The pressure steel pipe body (2) is slidably connected to the surface of the plurality of rollers (3), and one end of the two main steel wire ropes (102) is arranged at the top of the connecting column (4).

2. The device for installing inclined shaft pressure steel pipes in a pumped storage power station according to claim 1, characterized in that: A plurality of support plates (5) are arranged on the surface of the connection column (4); a connection block (501) is fixedly connected to one side of the plurality of support plates (5) close to each other; anti-slip grooves are arranged on the surfaces of the plurality of support plates (5); and a sliding mechanism for sliding the plurality of support plates (5) is arranged inside the connection column (4).

3. The device for installing inclined shaft pressure steel pipes in a pumped storage power station according to claim 2, characterized in that: The sliding mechanism comprises a lifting plate (6), a layer plate (405) is fixedly connected to the center of the connection column (4), two lifting plates (6) are provided, both of the two lifting plates (6) are slidably connected to the inside of the connection column (4), and the two lifting plates (6) are respectively arranged on both sides of the layer plate (405).

4. The device for installing inclined shaft pressure steel pipes in a pumped storage power station according to claim 3 is characterized in that: A screw rod (602) is rotatably connected to the center of the connecting column (4). The screw rod (602) is inserted into the layer plate (405). The two ends of the screw rod (602) are rotatably sleeved on the two ends of the connecting column (4). The screw rod (602) is rotatably sleeved inside the two lifting plates (6). The two lifting plates (6) are matched with the surface of the screw rod (602).

5. The device for installing inclined shaft pressure steel pipes in a pumped storage power station according to claim 4, characterized in that: A motor (603) is installed on the top of the connecting column (4); the output end of the motor (603) is fixedly connected to one end of the screw rod (602); a protective cover (7) is fixedly connected to the top of the connecting column (4); the protective cover (7) is sleeved on the surface of the motor (603); and a plurality of dustproof nets (701) are arranged on the surface of the protective cover (7).

6. The device for installing inclined shaft pressure steel pipes in a pumped storage power station according to claim 5, characterized in that: A plurality of vertical grooves (404) are vertically provided on the surface of the connecting column (4), and the plurality of vertical grooves (404) are respectively arranged at the upper and lower ends of the layer plate (405), and the plurality of vertical grooves (404) are evenly distributed in a ring shape, and the plurality of vertical grooves (404) are slidably connected with fixed blocks (601) inside, and the plurality of fixed blocks (601) are respectively fixedly connected to the curved surfaces of the surfaces of the two lifting plates (6), and the plurality of fixed blocks (601) are hinged with support rods (502) inside, and the plurality of support rods (502) form a pair, and one end of each pair of support rods (502) is respectively hinged to the upper and lower ends of the support plate (5).

7. The device for installing inclined shaft pressure steel pipes in a pumped storage power station according to claim 6, characterized in that: Two fixing rods (401) are fixedly connected to the top of the connecting column (4); a connecting piece (402) is installed at one end of the two fixing rods (401) away from each other; a second steel wire rope (403) is fixedly connected between the two connecting pieces (402); and one end of the two main steel wire ropes (102) is installed on the surface of the second steel wire rope (403).

8. A construction process for installing a pressure steel pipe in an inclined shaft of a pumped storage power station, characterized in that: The following steps are involved: Step 1: transport the pressure steel pipe body (2) inside the well (1), transport the pressure steel pipe body (2) through the transport device in the horizontal section inside the well (1), install the connecting column (4) inside the pressure steel pipe body (2), and then transport the pressure steel pipe body (2) to the bend; Step 2: The penstock body (2) can be slidably transported at the bend by a plurality of rollers (3), and the penstock body (2) can be pulled by a connecting column (4) and a plurality of support plates (5) through the connection of two main steel wire ropes (102) and a second steel wire rope (403), and the penstock body (2) can be moved by two winches (101); Step 3: Move the connecting column (4) between the two pressure steel pipe bodies (2), and slide the multiple support plates (5), so that the multiple support plates (5) support the inner walls of the two pressure steel pipe bodies (2) so that the two pressure steel pipe bodies (2) can be aligned.

Images