Method for hoisting tubular seat of tubular generator set in narrow space

Abstract

The application discloses a method for hoisting a tubular seat of a bulb tubular turbine unit in a narrow space, and belongs to the technical field of hydroelectric power generation equipment. The method for hoisting the tubular seat of the bulb tubular turbine unit in the narrow space can successfully complete hoisting of the tubular seat of the bulb tubular turbine unit in the narrow space, and improves the feasibility and efficiency of construction. Small first lifting equipment and second lifting equipment are adopted to reduce interference on the surrounding environment and other construction activities, and to reduce construction cost. Precise lifting and in-place operation are realized through the first lifting equipment and the second lifting equipment, the precision and efficiency of hoisting operation are effectively improved, the installation precision of the tubular seat is ensured, the operation stability of the unit is improved, safety risks in the construction process are effectively controlled, and the safety of personnel and equipment is ensured.

Description

Technical Field

[0001] This application relates to the field of hydropower generation equipment technology, and in particular to a method for suspending a bulb-type tube seat for a cross-flow turbine unit in a confined space. Background Technology

[0002] When installing bulb-type axial flow turbine units, traditional large-scale hoisting equipment is typically used to lift the tubular bases before the plant's overhead crane is completed. These traditional methods often require a large working space and are relatively expensive. Furthermore, due to the unique structural characteristics of bulb-type axial flow turbine units, the precision and stability of the hoisting operations are extremely demanding. Because the on-site hoisting radius is large, existing lifting equipment cannot meet the requirements. Therefore, it is considered to perform close-range hoisting within the relatively confined water inlet channel. Traditional hoisting equipment is often limited by space constraints when hoisting tubular bases, leading to high construction difficulty, low efficiency, and certain safety risks. Summary of the Invention

[0003] This application aims to solve one of the aforementioned technical problems in the prior art. To this end, embodiments of this application provide a method for suspending a tubular base for a light bulb cross-flow unit in a confined space.

[0004] According to an embodiment of this application, a method for suspending a bulb-type cross-flow unit tubular base in a confined space is provided, comprising the following steps:

[0005] The water inlet channel was measured and analyzed to determine the location and range of motion of the first lifting equipment in the water inlet channel;

[0006] Secure the first column that has been delivered to its position.

[0007] After the first inner vertebral body is delivered into place, the first lifting device and the second lifting device cooperate to adjust the first connecting body of the first inner vertebral body to be horizontal and downward. The first lifting device then lifts the adjusted first connecting body to dock with the first column.

[0008] After the second inner vertebral body is delivered to the position, the first lifting device and the second lifting device cooperate to adjust the second connecting body of the second inner vertebral body to be horizontal and upward. The first lifting device lifts the adjusted first inner vertebral body to dock with the first inner vertebral body to form the inner vertebral body body.

[0009] The second column, which has been delivered to the designated position, is hoisted to dock with the second connecting body.

[0010] The outer vertebral body segments are transported sequentially and hoisted from bottom to top to the outside of the inner vertebral body to form the outer vertebral body.

[0011] The method for hoisting the tubular base of the bulb-type cyclone generator unit in a confined space described above has at least the following beneficial effects: The construction method of this application can smoothly complete the hoisting of the tubular base of the bulb-type cyclone generator unit in a confined space, improving the feasibility and efficiency of construction. Among them, the use of small first and second lifting equipment reduces interference with the surrounding environment and other construction activities, and lowers construction costs; and the precise hoisting and positioning operations achieved by the first and second lifting equipment effectively improve the accuracy and efficiency of hoisting operations, ensure the installation accuracy of the tubular base, improve the operational stability of the unit, effectively control safety risks during construction, and ensure the safety of personnel and equipment.

[0012] According to the method for suspending the tubular seat of the bulb cross-flow unit in a confined space as described in the embodiments of this application, both the first inner cone and the second inner cone are transported by a flatbed truck. During transport, both the first inner cone and the second inner cone are placed upside down on the flatbed truck.

[0013] According to the method for hoisting the tubular base of a bulb cross-flow unit in a confined space as described in the embodiments of this application, the first lifting device is a folding boom, and the second lifting device is a truck crane.

[0014] According to the method for suspending a bulb-type cyclone generator tubular seat in a confined space as described in the embodiments of this application, a first connecting part is provided at one end of the first inner cone, and a second connecting part is provided at the other end of the first inner cone. When the posture of the first inner cone is adjusted, the first main hook of the first lifting device is connected to the first connecting part through a steel wire rope, and the second main hook of the second lifting device is connected to the second connecting part through a steel wire rope.

[0015] According to the method for hoisting the tubular seat of the bulb cross-flow unit in a confined space as described in the embodiments of this application, a traction rope is provided at the other end of the first inner cone, and a hand chain hoist is provided on the traction rope. The hand chain hoist is connected to the first lifting equipment. When the first inner cone is hoisted to the first column, the vertical state of the first connecting body is adjusted by the hand chain hoist and the traction rope.

[0016] According to the method for suspending a bulb-type cyclone generator tubular seat in a confined space as described in the embodiments of this application, a third connecting part is provided at one end of the second inner cone, and a fourth connecting part is provided at the other end of the second connecting body. When the posture of the second inner cone is adjusted, the first main hook of the first lifting device is connected to the fourth connecting part through a wire rope, and the second main hook of the second lifting device is connected to the third connecting part through a wire rope.

[0017] According to the method for hoisting the tubular seat of the bulb cross-flow unit in a confined space as described in the embodiments of this application, a traction rope is provided at the other end of the second inner cone, and a hand chain hoist is provided on the traction rope. The hand chain hoist is connected to the first lifting equipment. When the second inner cone is hoisted to be closed with the first inner cone, the vertical state of the second connecting body is adjusted by the hand chain hoist and the traction rope.

[0018] According to the method for suspending the tubular seat of the bulb cross-flow unit in a confined space as described in the embodiments of this application, after the inner cone body is connected, the height and center of the first inner cone and the second inner cone are adjusted by jacks and tensioners, wherein the first connecting body and the second connecting body are collinear.

[0019] According to the method for suspending the tubular base of the bulb cross-flow unit in a confined space as described in the embodiments of this application, the second column is hoisted to dock with the second connecting body by the first lifting equipment, the second column and the second connecting body are fixed by a connecting plate, and the second column and the first column are collinear.

[0020] According to the method for suspending the tubular seat of the bulb cross-flow unit in a confined space as described in the embodiments of this application, during the segments of the outer vertebral body, an adjustment rope is provided on the outer vertebral body segment, and the adjustment rope is used to adjust the posture of the outer vertebral body segment.

[0021] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0022] The present application will be further described below with reference to the accompanying drawings and embodiments;

[0023] Figure 1 This is a schematic diagram of the first lifting device in the water inlet channel according to an embodiment of this application;

[0024] Figure 2 This is a schematic diagram of the structure of the hoisting column of the first lifting equipment in this embodiment of the application;

[0025] Figure 3 This is a schematic diagram of the structure of the first lifting equipment hoisting the first inner cone in an embodiment of this application;

[0026] Figure 4 This is a schematic diagram of the first and second lifting devices hoisting the first inner cone structure in an embodiment of this application. Figure 1 ;

[0027] Figure 5 This is a schematic diagram of the first and second lifting devices hoisting the first inner cone structure in an embodiment of this application. Figure 2 ;

[0028] Figure 6 This is a schematic diagram of the first and second lifting devices hoisting the second inner cone structure in an embodiment of this application. Figure 1 ;

[0029] Figure 7 This is a schematic diagram of the first and second lifting devices hoisting the second inner cone structure in an embodiment of this application. Figure 2

[0030] Figure 8 This is a schematic diagram of the external vertebral body hoisting in an embodiment of this application. Figure 1 ;

[0031] Figure 9 This is a schematic diagram of the external vertebral body hoisting in an embodiment of this application. Figure 2 ;

[0032] Figure 10 This is a schematic diagram of the external vertebral body hoisting in an embodiment of this application. Figure 3 ;

[0033] Figure 11 This is a schematic diagram of the external vertebral body hoisting in an embodiment of this application. Figure 4 .

[0034] Reference numerals: Inlet channel 100, tubular base 110, first lifting device 200, first main hook 210, hand chain hoist 220, first column 310, first inner cone 410, first connecting body 411, second inner cone 420, second connecting body 421, second main hook 510, first segment 610, second segment 620, third segment 630, fourth segment 640. Detailed Implementation

[0035] This section will describe in detail the specific embodiments of this application. Preferred embodiments of this application are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of this application, but they should not be construed as limiting the scope of protection of this application.

[0036] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0037] In the description of this application, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0038] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0039] Reference Figure 1 In this embodiment of the application, when the factory bridge crane has not yet been built, a water inlet channel 100 is set up inside it. The passageway that can be passed through the water inlet channel 100 is limited. Traditional large hoisting equipment requires a large working space to carry out hoisting tasks, and the cost of using these hoisting equipment is relatively high.

[0040] In addition, due to the unique structural characteristics of bulb-type air conditioning units, very strict requirements are placed on the precision and stability of hoisting operations. Traditional large-scale hoisting equipment has a large on-site hoisting radius, which cannot meet the needs of low-cost hoisting, making it difficult to guarantee the precision and stability of hoisting operations, and also resulting in high costs. Furthermore, the use of large-scale hoisting equipment restricts the working environment, posing significant difficulties for installation operations in confined spaces or special environments.

[0041] Therefore, this application provides a method for suspending a bulb-type cross-flow unit tubular base in a confined space, specifically including the following steps:

[0042] The water inlet channel 100 is measured and analyzed to determine the location and range of motion of the first lifting device 200 in the water inlet channel 100;

[0043] Secure the first column 310 that has been delivered to the position;

[0044] After the first inner vertebral body is delivered into place, the first lifting device 200 and the second lifting device cooperate to adjust the first connecting body 411 of the first inner vertebral body to be horizontal and downward. The first lifting device 200 lifts the adjusted first connecting body 411 to dock with the first column 310.

[0045] After the second inner vertebra 420 is delivered to the position, the first lifting device 200 and the second lifting device cooperate to adjust the second connecting body 421 of the second inner vertebra 420 to be horizontal and upward. The first lifting device 200 lifts the adjusted first inner vertebra to dock with the first inner vertebra to form the inner vertebra body.

[0046] The second column, which has been delivered to the designated position, is hoisted to dock with the second connecting body 421.

[0047] The outer vertebral body segments are transported sequentially and hoisted from bottom to top to the outside of the inner vertebral body to form the outer vertebral body.

[0048] The construction method described in this application enables the successful hoisting of the tubular base of the bulb-type turbine unit in confined spaces, improving the feasibility and efficiency of construction. The use of small first and second lifting devices reduces interference with the surrounding environment and other construction activities, lowering construction costs. Furthermore, the precise hoisting and positioning operations achieved through the first and second lifting devices effectively improve the accuracy and efficiency of the hoisting operation, ensuring the installation accuracy of the tubular base, enhancing the operational stability of the unit, effectively controlling safety risks during construction, and guaranteeing the safety of personnel and equipment.

[0049] In some embodiments, both the first inner vertebral body and the second inner vertebral body 420 are transported by a flatbed truck. During transport, both the first inner vertebral body and the second inner vertebral body 420 are placed upside down on the flatbed truck. This upside-down transport method can avoid the vertebral body becoming unstable or tipping over and slipping off the flatbed truck during transport.

[0050] In some embodiments, the first lifting device 200 is a folding boom, and the second lifting device is a truck crane.

[0051] The method for hoisting the tubular base of a bulb-type cross-flow unit in a confined space according to this application involves adjusting the boom of a folding arm crane to a suitable angle and position. The boom length and angle are adjusted according to the site environment and the dimensions of the tubular base to ensure safety and stability during the hoisting process. Then, the folding arm crane is used to smoothly lift the tubular base from the ground and move it above the installation position. The extension and retraction function of the folding arm is then used to smoothly lift and move the components of the tubular base, which have been delivered to the installation position, to the installation position. Finally, the hook is slowly lowered to accurately place the components of the tubular base in the predetermined position. This method utilizes the flexibility and precise control of the folding arm crane to effectively improve the accuracy and efficiency of the hoisting operation.

[0052] The selection of a crane should take into account factors such as its lifting capacity, on-site road safety, and economic efficiency, as well as the weight, dimensions, and installation height of the objects on site. A folding boom crane, under load, has an extendable boom, making it suitable for lifting in confined spaces.

[0053] In some embodiments, before hoisting the first column 310, construction equipment such as jacks, tensioners, reinforcement components, and tools are hoisted into the pit for later use; the mounting surfaces of the first column 310 pier and the tubular foundation 110 are cleaned, and jacks are arranged according to elevation. The lower column weighs 6t and is directly hoisted into the pit using a tower crane, the anchor bolts are installed, and preliminary adjustments and reinforcement measures are taken for the lower column.

[0054] Then the first inner cone 410 is transported to the water inlet channel 100 using a 13m flatbed truck. After the first inner cone 410 is in place, the second inner cone is transported to the water inlet channel 100.

[0055] In some embodiments, a first connecting part is provided at one end of the first inner vertebra, and a second connecting part is provided at the other end of the first inner vertebra. Specifically, the first connecting part can be a lifting lug or a screw hole for installing a shackle near the combined flange of the first inner vertebra, and the second connecting part can be a lifting lug.

[0056] A traction rope is installed at the other end of the first inner cone, and a hand chain hoist 220 is installed on the traction rope. The hand chain hoist 220 is connected to the first lifting equipment 200. When the first inner cone is hoisted to the first column 310, the vertical state of the first connecting body 411 is adjusted by the hand chain hoist 220 and the traction rope.

[0057] like Figures 2 to 5 As shown, when adjusting the posture of the first inner cone using the first lifting device 200 and the second lifting device, the first main hook 210 of the first lifting device 200 is connected to the first connecting part via a wire rope, and the second main hook 510 of the second lifting device is connected to the second connecting part via a wire rope. The first main hook 210 of the first lifting device 200 and the second main hook 510 of the second lifting device are simultaneously and slowly raised in parallel. After being raised to a certain height, the first main hook 210 of the first lifting device 200 is slowly raised while the second main hook 510 of the second lifting device is slowly lowered to cause the first inner cone to flip. This is directed by a dedicated commander through visual observation until the first inner cone 410 is flipped into an upright lifting state.

[0058] After the first inner cone 410 is flipped into an upright hoisting state and lifted to a certain height, the folding boom crane rotates its main boom so that the first inner cone 410 is above the installation position. The operator visually directs the folding boom crane's main hook and makes fine adjustments. The hook should be lowered slowly and not too quickly, while holding the traction rope to avoid collision with the wall. When the hook is about to contact the first column 310, the specific installation position and direction are readjusted again. After the specific position is determined, the hook is lowered again so that the first connector 411 of the first inner cone 410 is connected to the first column 310. After the hook of the folding boom is lowered to the point where it is no longer under stress, the connecting plate between the first inner cone 410 and the first column 310 is welded. The hook can only be released after the reinforcement is completed.

[0059] After the first inner vertebral body is hoisted, the second inner vertebral body 420 is hoisted. The hoisting process of the second inner vertebral body 420 is similar to that of the first inner vertebral body.

[0060] Specifically, a third connecting part is provided at one end of the second inner cone 420, and a fourth connecting part is provided at the other end of the second connecting body 421. When the posture of the second inner cone 420 is adjusted, the first main hook 210 of the first lifting device 200 is connected to the fourth connecting part via a wire rope, and the second main hook 510 of the second lifting device is connected to the third connecting part via a wire rope. Specifically, the third connecting part can be a lifting lug or bolt hole near the combined flange of the first inner cone for installing a shackle, and the fourth connecting part can be a lifting lug.

[0061] A traction rope is installed at the other end of the second inner vertebra 420, and a hand chain hoist 220 is installed on the traction rope. The hand chain hoist 220 is connected to the first lifting equipment 200. When the second inner vertebra 420 is hoisted to be closed with the first inner vertebra, the vertical state of the second connecting body 421 is adjusted by the hand chain hoist 220 and the traction rope.

[0062] like Figure 6 and Figure 7 As shown, when adjusting the posture of the second inner cone 420 using the first lifting device 200 and the second lifting device, the first main hook 210 of the first lifting device 200 is connected to the fourth connecting part via a wire rope, and the second main hook 510 of the second lifting device is connected to the third connecting part via a wire rope. The first main hook 210 of the first lifting device 200 and the second main hook 510 of the second lifting device are simultaneously and slowly raised in parallel. After being raised to a certain height, the first main hook 210 of the first lifting device 200 is slowly raised while the second main hook 510 of the second lifting device is slowly lowered to cause the second inner cone 420 to flip. This is directed by a dedicated commander through visual observation until the second inner cone is flipped into an upright lifting state.

[0063] After the second inner cone is flipped into an upright hoisting state and lifted to a certain height, the folding boom crane rotates its main boom so that the second inner cone is above the installation position. The operator visually directs the folding boom crane's main hook and makes fine adjustments. The hook should be lowered slowly and not too quickly, while holding the traction rope to avoid collision with the wall. When the lowering is about to contact the joint surface of the first inner cone, the specific installation position and direction are readjusted again. After the specific position is determined, the lowering continues until the combined flange of the first inner cone 410 and the second inner cone 420 aligns with the hole. The combined surfaces are then connected with bolts, at which point the inner cone body of the tubular seat becomes a whole.

[0064] After the inner vertebral bodies are connected, the height and center of the first and second inner vertebral bodies 420 are adjusted by using jacks and tensioners. The first connecting body 411 and the second connecting body 421 are collinear.

[0065] Next, the second column is hoisted. The second column is hoisted to the second connecting body 421 by the first hoisting equipment 200. The second column and the second connecting body 421 are fixed by a connecting plate. The second column and the first column 310 are collinear.

[0066] The outer cone of the unit's tubular seat has a side flange diameter of approximately 11m and is transported in sections. The outer cone body is divided into four sections and transported to the site, each weighing approximately 6t. The outer cone sections are hoisted in four separate stages using other methods.

[0067] Specifically, the outer cone is segmented into four sections: the first section 610, the second section 620, the third section 630, and the fourth section 640, installed from bottom to top (see details). Figures 8 to 11 The first section 610 was hoisted first, followed by the second section 620, and finally the third section 630 and the fourth section 640.

[0068] During the hoisting of the outer vertebral body segments, adjustment ropes are installed on the segments to adjust their posture.

[0069] During the segmented hoisting of the outer cone, it should not be lifted too high off the ground. Before hoisting, two appropriately long adjusting ropes should be hung at the corresponding positions on the lower outer side of the outer cone (each adjusting rope requires two people to pull, and the force should be applied slowly when pulling the adjusting rope). This is to adjust the direction and also to adjust its installation position. After each segment of the outer cone is hoisted directly above the inner shell of the tubular seat of each unit, the commanding personnel will visually adjust and make fine adjustments. Once the correct position is confirmed, the hook will be lowered. The hook should be lowered slowly and not too quickly. When it is lowered to the installation position, the specific installation position will be adjusted again.

[0070] The construction method described in this application enables the successful hoisting of the tubular base of the bulb-type turbine unit in confined spaces, improving the feasibility and efficiency of construction. The use of small first and second lifting devices reduces interference with the surrounding environment and other construction activities, lowering construction costs. Furthermore, the precise hoisting and positioning operations achieved through the first and second lifting devices effectively improve the accuracy and efficiency of the hoisting operation, ensuring the installation accuracy of the tubular base, enhancing the operational stability of the unit, effectively controlling safety risks during construction, and guaranteeing the safety of personnel and equipment.

[0071] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. A method for hoisting a tubular base of a tubular generator unit in a narrow space, characterized in that, The method comprises the following steps: measuring and analyzing the water inlet channel to determine the arrangement position and range of motion of the first lifting device in the water inlet channel; fixing the first column delivered to the position; after the first inner column is delivered to the position, the first lifting device and the second lifting device cooperate to adjust the first connecting body of the first inner column to be horizontally downward, and the first lifting device hoists the adjusted first connecting body to be connected with the first column, wherein one end of the first inner column is provided with a first connecting part, the first connecting body at the other end of the first inner column is provided with a second connecting part, when the posture of the first inner column is adjusted, the first main hook of the first lifting device is connected with the first connecting part through a steel wire rope, and the second main hook of the second lifting device is connected with the second connecting part through a steel wire rope; after the second inner column is delivered to the position, the first lifting device and the second lifting device cooperate to adjust the second connecting body of the second inner column to be horizontally upward, and the first lifting device hoists the adjusted first inner column to be connected with the first inner column to form an inner column body, wherein one end of the second inner column is provided with a third connecting part, the second connecting body at the other end of the second inner column is provided with a fourth connecting part, when the posture of the second inner column is adjusted, the first main hook of the first lifting device is connected with the fourth connecting part through a steel wire rope, and the second main hook of the second lifting device is connected with the third connecting part through a steel wire rope; the second column delivered to the position is hoisted to be connected with the second connecting body; the delivery of the outer column segments is sequentially performed, and the outer column segments are sequentially hoisted to the outside of the inner column body from bottom to top to form an outer column body, and an adjusting rope is arranged on the outer column segment during the hoisting of the outer column segment, and the adjusting rope is used for adjusting the posture of the outer column segment.

2. The method of hoisting a tube-shaped base of a bulb-tube unit in a narrow space according to claim 1, characterized in that: The first inner column and the second inner column are delivered by a flat car, and the first inner column and the second inner column are inverted on the flat car during delivery.

3. The method of hoisting a tube-shaped base of a bulb-tube unit in a narrow space according to claim 2, characterized in that: The first lifting device is a folding lifting arm, and the second lifting device is a truck crane.

4. The method of hoisting a tube-shaped base of a bulb-tube unit in a narrow space according to claim 1, characterized in that: The other end of the first inner column is provided with a traction rope, a hand-operated hoist is arranged on the traction rope, the hand-operated hoist is connected with the first lifting device, and the vertical state of the first connecting body is adjusted through the hand-operated hoist and the traction rope when the first inner column is hoisted to the first column.

5. The method of hoisting a tube-shaped base of a bulb-tube unit in a narrow space according to claim 1, characterized in that: The other end of the second inner column is provided with a traction rope, a hand-operated hoist is arranged on the traction rope, the hand-operated hoist is connected with the first lifting device, and the vertical state of the second connecting body is adjusted through the hand-operated hoist and the traction rope when the second inner column is hoisted to be folded with the first inner column.

6. The method of hoisting a tube-shaped base of a bulb-tube unit in a narrow space according to claim 1, characterized in that: After the inner column body is connected, the height and center of the first inner column and the second inner column are adjusted through a jack and a tensioner, and the first connecting body and the second connecting body are collinear.

7. The method of hoisting a tube-shaped base of a bulb-tube unit in a narrow space according to claim 1, characterized in that: The second column is hoisted to butt joint with the second connecting body by the first hoisting equipment, the second column and the second connecting body are fixed by a connecting plate, and the second column is collinear with the first column.

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