A hoisting and positioning structure for a pump tower

Abstract

The present application relates to a hoisting and positioning structure for a pump tower, which includes a positioning bottom frame, a pair of movable side plates arranged on both sides of the positioning bottom frame, and an upper positioning plate arranged on the movable side plates and located above the base. The clamping surface of the upper positioning plate is an arc surface adapted to the outer peripheral wall of the pump liquid pipe. The positioning bottom frame is provided with a positioning guide groove arranged in an arc shape, and the axis of the positioning guide groove coincides with the axis of the base. The movable side plate includes a lower side plate and an upper side plate slidably connected to the lower side plate in the vertical direction. A slider slidably connected to the positioning guide groove is convexly fixed on the lower end surface of the lower side plate. The positioning bottom frame is provided with a rotating mechanism for driving the lower side plate to slide around the axis of the base. A lifting member for driving the upper side plate to slide is arranged between the upper side plate and the lower side plate. The upper positioning plate is slidably connected to the upper side plate in the radial direction of the pump liquid pipe. A support bottom plate is slidably connected to the lower part of the upper positioning plate in the radial direction. The sliding direction of the support bottom plate is parallel to the sliding direction of the upper positioning plate, and the upper end surface of the support bottom plate abuts against the lower end surface of the pump liquid pipe.

Description

Technical Field

[0001] This application relates to the technical field of cryogenic storage devices, and particularly to a hoisting and positioning structure for a pump tower. Background Art

[0002] Liquefied Natural Gas (LNG), mainly composed of methane, is recognized as the cleanest fossil energy on earth. When transporting natural gas, for more economical long-distance transportation, the gas is usually cooled to a low temperature and the liquefied gas is transported. The liquefied cryogenic liquid is stored and transported in a special cryogenic storage tank, and a pump tower is arranged inside the storage tank as a passage for the cryogenic liquid to enter and exit the storage tank.

[0003] In the prior art, the pump tower includes three riser structures fixed to each other by cross beams, and the three risers are arranged in a triangular cross-section. Each riser is hollow, and the three risers are respectively a liquid inlet pipe, a liquid measuring pipe, and a pump liquid pipe. The installation method of the pump tower is usually: the top of the pump tower is fixed to the top wall of the storage tank, and the bottom of the pump liquid pipe is limited. The bottom limiting structure is a base for the bottom of the pump liquid pipe to be inserted.

[0004] During the installation of the pump tower, the upper part of the pump tower is hoisted by a hoisting device to facilitate the docking of the pump liquid pipe and the base. During the hoisting process, the angles of the three risers also need to be adjusted for alignment and fixation. In the prior art, due to the long length dimension of the pump tower, it is often difficult to ensure efficiency and accuracy during the angle adjustment process, resulting in an extended installation time and low overall installation efficiency. Therefore, further improvement is needed. Summary of the Invention

[0005] In order to improve the installation efficiency of the pump tower, this application provides a hoisting and positioning structure for a pump tower.

[0006] A hoisting and positioning structure for a pump tower provided by this application adopts the following technical solution:

[0007] A hoisting and positioning structure for a pump tower, comprising a positioning bottom frame, a pair of movable side plates arranged on both sides of the positioning bottom frame and located on both sides of the pump liquid pipe respectively, and an upper positioning plate arranged on the movable side plate and located above the base to clamp and position the lower part of the pump liquid pipe. The clamping surface of the upper positioning plate is an arc surface adapted to the outer peripheral wall of the pump liquid pipe. The positioning bottom frame is provided with a positioning guide groove arranged in an arc shape, and the axis of the positioning guide groove coincides with the axis of the base. The movable side plate includes a lower side plate and an upper side plate slidably connected to the lower side plate in the vertical direction and located above the lower side plate. A slider slidably connected to the positioning guide groove is convexly fixed on the lower end surface of the lower side plate. The positioning bottom frame is provided with a rotating mechanism for driving the lower side plate to slide around the axis of the base. A lifting member for driving the upper side plate to slide is arranged between the upper side plate and the lower side plate. The upper positioning plate is slidably connected to the upper side plate in the radial direction of the pump liquid pipe. The upper side plate is provided with a first driving member for driving the upper positioning plate to slide. The lower part of the upper positioning plate is slidably connected to a support bottom plate in the radial direction. The sliding direction of the support bottom plate is parallel to the sliding direction of the upper positioning plate. The upper end surface of the support bottom plate abuts against the lower end surface of the pump liquid pipe. The upper positioning plate is provided with a second driving member for driving the support bottom plate to slide.

[0008] By adopting the above technical solutions, under normal conditions, the support bottom plate slides out convexly from the inner wall of the lower part of the upper positioning plate. When installing the pump tower, first move the positioning bottom frame to the installation position, lift the upper part of the pump liquid pipe by a hoisting device, so that the lower end surface of the pump liquid pipe is located above the base and the support bottom plate. Then, the first driving member drives the upper positioning plate to slide towards the direction close to the pump liquid pipe, so that the clamping surfaces of the two upper positioning plates abut against the outer peripheral wall of the pump liquid pipe, and the upper end surface of the support bottom plate abuts against the lower end surface of the pump liquid pipe, realizing the clamping and positioning of the pump liquid pipe. After the pump liquid pipe and the base are coaxially arranged, the lifting member drives the upper side plate to move upward, thereby driving the first positioning plate and the support bottom plate to move upward together, so that the lifting rope of the hoisting device is in a slack state. Subsequently, the rotating mechanism drives the movable side plate to slide around the axis of the base, realizing the rotation and sliding of the upper positioning plate and the pump tower together around the axis of the pump liquid pipe, so as to adjust the positions of the other two vertical pipes. After the adjustment is completed, the upper side plate moves downward to reset, and the second driving member drives the support bottom plate to slide away from the pump liquid pipe. After removing the support for the lower end of the pump liquid pipe, the hoisting device moves downward, and the pump liquid pipe moves downward relative to the upper positioning plate due to its own weight, so that the lower part of the pump liquid pipe is coaxially inserted into the inner hole of the base, effectively improving the installation efficiency of the pump tower.

[0009] Preferably, a stop insertion rod is slidably connected to the upper part of the upper positioning plate in the sliding direction of the support bottom plate. A stop insertion hole for inserting the stop insertion rod is formed in the side wall of the lower part of the pump liquid pipe. There are a plurality of stop insertion holes and they are symmetrically distributed around the axis of the pump liquid pipe. A linkage member located between the upper positioning plate and the upper side plate is arranged between the stop insertion rod and the support bottom plate.

[0010] By adopting the above technical solution, in the initial state, one end part of the supporting bottom plate protrudes from the clamping surface of the upper positioning plate, and the stop plug rod does not extend out of the clamping surface of the upper positioning plate. After the lower end surface of the pump liquid pipe abuts against the upper end surface of the supporting bottom plate, first, the rotating mechanism drives the movable side plate to slide around the axis of the base, so that the upper positioning plate rotates and adjusts relative to the pump liquid pipe. Thus, after the stop plug rod and the stop socket are aligned, the second driving member drives the supporting bottom plate to slide towards the pump liquid pipe, and then drives the stop plug rod to slide and insert into the stop socket through the linkage member, effectively restricting the relative rotation between the upper positioning plate and the pump liquid pipe, ensuring the stability of the pump liquid pipe during the adjustment process. Subsequently, the lifting member drives the upper side plate to move upward, thereby driving the first positioning plate and the supporting bottom plate to move upward together, so that the lifting rope of the hoisting device is in a slack state. Then, the rotating mechanism drives the movable side plate to slide around the axis of the base again, realizing the rotation and sliding of the upper positioning plate and the pump tower together around the axis of the pump liquid pipe, so as to adjust the positions of the other two riser pipes. After the adjustment is completed, the upper side plate moves downward to reset, and the second driving member drives the supporting bottom plate to slide away from the pump liquid pipe, so that the supporting bottom plate and the stop plug rod retract. After removing the support for the lower end of the pump liquid pipe, the hoisting device moves downward, and the pump liquid pipe moves downward relative to the upper positioning plate due to its own weight, so that the lower part of the pump liquid pipe is coaxially inserted into the inner hole of the base.

[0011] Preferably, the linkage member includes a fixed vertical rod fixedly connected between the stop plug rod and the supporting bottom plate.

[0012] By adopting the above technical solution, the fixed vertical rod connects the stop plug rod and the supporting bottom plate into one body, so that when the supporting bottom plate slides radially under the drive of the second driving member, it can synchronously drive the stop plug rod to slide, ensuring the coordinated movement of the stop plug rod and the supporting bottom plate. When the supporting bottom plate slides towards the pump liquid pipe, the stop plug rod can accurately insert into the stop socket, effectively restricting the relative rotation between the upper positioning plate and the pump liquid pipe, thereby improving the positioning accuracy and stability during the installation of the pump tower.

[0013] Preferably, a positioning laser emitter for emitting laser to the stop socket is arranged at the end of the stop plug rod on one side of the pump liquid pipe, and a positioning laser receiver is arranged at the end of the stop plug rod on the other side of the pump liquid pipe.

[0014] By adopting the above technical solution, the positioning laser emitter and the positioning laser receiver are arranged at the end of the stop plug rod, which can accurately judge the position of the stop socket through the emission and reception of laser signals before the stop plug rod is inserted into the stop socket, effectively improving the alignment accuracy between the stop plug rod and the stop socket and the alignment efficiency.

[0015] Preferably, an installation groove is formed in the side wall of the upper positioning plate close to the liquid pumping pipe. The upper positioning plate is provided with a resistance increasing bladder fixed to the inner wall of the installation groove. A mounting plate is fixedly connected to the side wall of the upper positioning plate away from the liquid pumping pipe. The mounting plate is fixedly connected to an air regulating box. A piston plate that divides the inner cavity into a first chamber and a second chamber is hermetically and slidably connected in the inner cavity of the air regulating box. The first chamber is located at one end of the air regulating box close to the upper positioning plate. A sliding hole communicating with the first chamber is formed in the end face of the air regulating box close to the upper positioning plate. A movable rod passing through the sliding hole is fixedly connected to the piston plate. A connecting arm located between the air regulating box and the upper positioning plate is fixedly connected between the movable rod and the stop insertion rod. The air regulating box is provided with an air pipe communicating between the second chamber and the inner cavity of the resistance increasing bladder. When the stop insertion rod is inserted into the stop insertion hole, the resistance increasing bladder is in a deflated state and thus retracts into the installation groove.

[0016] By adopting the above technical solution, in the initial state, a part of one end of the supporting bottom plate protrudes from the clamping surface of the upper positioning plate. The stop insertion rod does not extend out of the clamping surface of the upper positioning plate. The resistance increasing bladder is in a normal state. At this time, the resistance increasing bladder is not exposed outside the clamping surface of the upper positioning plate, avoiding the resistance increasing bladder from hindering the relative movement between the upper positioning plate and the liquid pumping pipe, so as to facilitate the alignment adjustment of the stop insertion rod and the stop insertion hole. When the second driving member drives the supporting bottom plate to slide towards the liquid pumping pipe, the stop insertion rod slides and is inserted into the stop insertion hole, the piston plate slides towards the liquid pumping pipe, so that the volume of the second chamber increases, and the gas in the resistance increasing bladder is extracted through the air pipe, making the resistance increasing bladder in a deflated state. When the second driving member drives the supporting bottom plate to slide away from the liquid pumping pipe and retracts into the clamping surface of the upper positioning plate, the piston plate slides away from the liquid pumping pipe, so that the volume of the second chamber decreases, and the gas is squeezed into the resistance increasing bladder through the air pipe, so that the resistance increasing bladder expands and the outer wall of the resistance increasing bladder abuts against the outer peripheral wall of the liquid pumping pipe, effectively reducing the possibility that the liquid pumping pipe rotates around its own axis during the process of moving down and being inserted into the base.

[0017] Preferably, the installation groove is an arc-shaped groove, and the resistance increasing bladder is correspondingly arc-shaped. A rotation preventing convex rib is protrudingly arranged on the outer peripheral wall of the resistance increasing bladder close to the liquid pumping pipe. The length direction of the rotation preventing convex rib is vertically arranged. A plurality of rotation preventing convex ribs are provided and are spaced apart around the axis of the resistance increasing bladder.

[0018] By adopting the above technical solution, a plurality of rotation preventing convex ribs are spaced apart around the axis of the resistance increasing bladder and extend vertically, effectively increasing the rotation preventing friction force between the resistance increasing bladder and the liquid pumping pipe, preventing the liquid pumping pipe from rotating during the process of descending relative to the upper positioning plate, so as to ensure the precise positioning during the installation of the pump tower.

[0019] Preferably, it further includes a lower positioning plate disposed on the movable side plate and below the upper positioning plate for clamping and fixing the base. The lower positioning plate is slidably connected to the lower side plate along the radial direction of the base. The clamping surface of the lower positioning plate is an arc surface adapted to the outer peripheral wall of the upper part of the base. The lower side plate is provided with a third driving member for driving the lower positioning plate to slide.

[0020] By adopting the above technical solution, the two lower positioning plates clamp and fix the base, so that after the two upper positioning plates clamp and fix the pump liquid pipe, the pump liquid pipe and the base are in a coaxial state, improving the installation accuracy.

[0021] Preferably, the rotating mechanism includes a pair of arc-shaped racks respectively fixedly connected to the outer walls of the lower parts of the two lower side plates, a transmission gear rotatably connected to the positioning bottom frame and meshing with the arc-shaped racks, and a driving motor fixedly connected to the positioning bottom frame and driving the transmission gear to rotate. The arc-shaped racks and the base are coaxial.

[0022] By adopting the above technical solution, the driving motor drives the transmission gear to rotate. Since the arc-shaped rack meshes with the transmission gear and the arc-shaped rack is fixed to the outer wall of the lower part of the lower side plate, the movable side plate can be driven to rotate around the axis of the base.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] Under normal conditions, the support bottom plate slides and protrudes from the lower inner wall of the upper positioning plate. When installing the pump tower, first move the positioning bottom frame to the installation position, lift the upper part of the pump liquid pipe by a hoisting device, so that the lower end face of the pump liquid pipe is located above the base and the support bottom plate. Then the first driving member drives the upper positioning plate to slide towards the direction close to the pump liquid pipe, so that the clamping surfaces of the two upper positioning plates abut against the outer peripheral wall of the pump liquid pipe, and the upper end face of the support bottom plate abuts against the lower end face of the pump liquid pipe, realizing the clamping and positioning of the pump liquid pipe. After the pump liquid pipe and the base are coaxial, the lifting member drives the upper side plate to move upward, thereby driving the first positioning plate and the support bottom plate to move upward together, so that the lifting rope of the hoisting device is in a slack state. Subsequently, the rotating mechanism drives the movable side plate to rotate and slide around the axis of the base, realizing the rotation and sliding of the upper positioning plate and the pump tower around the axis of the pump liquid pipe, so as to adjust the positions of the other two risers. After the adjustment is completed, the upper side plate moves downward to reset, and the second driving member drives the support bottom plate to slide away from the pump liquid pipe. After removing the support for the lower end of the pump liquid pipe, the hoisting device moves downward, and the pump liquid pipe moves downward relative to the upper positioning plate due to its own weight, so that the lower part of the pump liquid pipe is coaxially inserted into the inner hole of the base, effectively improving the installation efficiency of the pump tower;

[0025] In the initial state, one end portion of the support base plate protrudes from the clamping surface of the upper positioning plate, the stop insertion rod does not extend from the clamping surface of the upper positioning plate, and the resistance increasing bladder is in a normal state. At this time, the resistance increasing bladder is not exposed outside the clamping surface of the upper positioning plate, avoiding hindrance to the relative movement between the upper positioning plate and the liquid pumping pipe, so as to facilitate the alignment adjustment of the stop insertion rod and the stop insertion hole. When the second driving member drives the support base plate to slide towards the liquid pumping pipe, driving the stop insertion rod to slide and insert into the stop insertion hole, the piston plate slides towards the liquid pumping pipe, making the volume of the second chamber increase, extracting the gas in the resistance increasing bladder through the air pipe, so that the resistance increasing bladder is in a deflated state. When the second driving member drives the support base plate to slide towards the liquid pumping pipe and retracts inside the clamping surface of the upper positioning plate, the piston plate slides away from the liquid pumping pipe, making the volume of the second chamber decrease, squeezing the gas into the resistance increasing bladder through the air pipe, so that the resistance increasing bladder expands and the outer wall of the resistance increasing bladder abuts against the outer peripheral wall of the liquid pumping pipe, effectively reducing the possibility of the liquid pumping pipe rotating around its own axis during the process of moving down and inserting into the base. Description of the Drawings

[0026] Figure 1 is the overall structural schematic diagram of a pump tower hoisting and positioning structure.

[0027] Figure 2 is the structural schematic diagram of the rotating mechanism.

[0028] Figure 3 is the structural schematic diagram of the transmission assembly.

[0029] Figure 4 is the structural schematic diagram of the upper positioning plate.

[0030] Figure 5 is the structural schematic diagram of the resistance increasing bladder.

[0031] Description of the Reference Numerals: 10, liquid pumping pipe; 101, stop insertion hole; 20, liquid inlet pipe; 30, liquid measuring pipe; 40, base; 1, positioning bottom frame; 11, arc arm; 12, cross arm; 13, positioning guide groove; 2, movable side plate; 21, lower side plate; 22, upper side plate; 23, vertical guide rod; 24, jack; 25, third oil cylinder; 26, first oil cylinder; 3, upper positioning plate; 31, upper guide rod; 32, support base plate; 33, second oil cylinder; 34, stop insertion rod; 341, alignment laser emitter; 342, alignment laser receiver; 35, fixed vertical rod; 36, resistance increasing bladder; 361, anti-rotation convex rib; 37, mounting plate; 38, air regulating box; 381, piston plate; 382, first chamber; 383, second chamber; 384, movable rod; 385, connecting arm; 39, air pipe; 4, lower positioning plate; 41, lower guide rod; 5, rotating mechanism; 51, arc rack; 52, transmission gear; 53, driving motor; 54, transmission assembly. Detailed implementation mode

[0032] The following will further elaborate on this application in conjunction with the attached Figures 1-5 drawings.

[0033] An embodiment of this application discloses a hoisting and positioning structure for a pump tower. Referring to Figure 1 , it includes a positioning bottom frame 1, a pair of movable side plates 2 arranged on both sides of the positioning bottom frame 1 and respectively located on both sides of the pump liquid pipe 10, an upper positioning plate 3 arranged on the movable side plate 2 and above the base 40 to clamp and position the lower part of the pump liquid pipe 10, and a lower positioning plate 4 arranged on the movable side plate 2 and below the upper positioning plate 3 to clamp and fix the base 40.

[0034] Referring to Figure 1 , Figure 2 , the positioning bottom frame 1 includes a pair of arc-shaped arms 11 arranged in an arc shape and a cross arm 12 fixedly connected between the rear ends of the two arc-shaped arms 11, so that the front end of the positioning bottom frame 1 is open, the two arc-shaped arms 11 are symmetrically arranged, and the positioning bottom frame 1 is detachably connected to the bottom wall of the storage tank by bolts. An arc-shaped positioning guide groove 13 is formed on the upper end surface of the arc-shaped arm 11. The positioning guide grooves 13 on the two arc-shaped arms 11 are coaxial and located on the same circular path.

[0035] The movable side plate 2 includes a lower side plate 21 and an upper side plate 22 slidably connected to the lower side plate 21 in the vertical direction and above the lower side plate 21. A sliding block slidably connected to the positioning guide groove 13 is convexly fixed on the lower end surface of the lower side plate 21. A vertical guide rod 23 slidably inserted into the lower side plate 21 is fixedly connected to the lower end surface of the upper side plate 22. A lifting member for driving the upper side plate 22 to slide is arranged between the upper side plate 22 and the lower side plate 21. In this embodiment, the lifting member is a jack 24. The jack 24 is fixedly connected to the lower side plate 21, and the telescopic rod of the jack 24 is fixedly connected to the upper side plate 22.

[0036] The arc-shaped arm 11 is provided with a rotating mechanism 5 for driving the lower side plate 21 to slide around the axis of the base 40. The rotating mechanism 5 includes a pair of arc-shaped racks 51 respectively fixedly connected to the outer walls of the lower parts of the two lower side plates 21, a transmission gear 52 rotatably connected to the arc-shaped arm 11 and meshing with the arc-shaped rack 51, and a driving motor 53 fixedly connected to the arc-shaped arm 11 and driving the transmission gear 52 to rotate. The driving motor 53 is a servo motor, and the arc-shaped rack 51 and the base 40 are coaxial. In this embodiment, two driving motors 53 are correspondingly arranged. In other embodiments, the driving motor 53 drives one of the transmission gears 52 to rotate. Referring to Figure 3 , a transmission component 54 for driving the two transmission gears 52 to rotate in the same direction is arranged between the two transmission gears 52. The transmission component 54 can adopt a structure of multiple sprockets cooperating with chains or a structure of multiple belt pulleys cooperating with transmission belts to realize the rotation of the two transmission gears 52.

[0037] Referring to Figure 2 , the lower positioning plate 4 is slidably connected to the lower side plate 21 along the radial direction of the base 40. The clamping surface of the lower positioning plate 4 is an arc surface adapted to the outer peripheral wall of the upper part of the base 40. The outer side wall of the lower positioning plate 4 is fixedly connected with a lower guide rod 41 slidably passing through the lower side plate 21. The lower side plate 21 is provided with a third driving member for driving the lower positioning plate 4 to slide. In this embodiment, the third driving member is a third oil cylinder 25. The cylinder body of the third oil cylinder 25 is fixedly connected to the outer side wall of the lower side plate 21, and the piston rod of the third oil cylinder 25 passes through the lower side plate 21 and is fixedly connected to the outer side wall of the lower positioning plate 4.

[0038] The upper positioning plate 3 is slidably connected to the upper side plate 22 along the radial direction of the liquid pumping pipe 10. The clamping surface of the upper positioning plate 3 is an arc surface adapted to the outer peripheral wall of the liquid pumping pipe 10. The outer side wall of the upper positioning plate 3 is fixedly connected with an upper guide rod 31 slidably passing through the upper side plate 22. The upper side plate 22 is provided with a first driving member for driving the upper positioning plate 3 to slide. In this embodiment, the first driving member is a first oil cylinder 26. The cylinder body of the first oil cylinder 26 is fixedly connected to the outer side wall of the upper side plate 22, and the piston rod of the first oil cylinder 26 passes through the upper side plate 22 and is fixedly connected to the outer side wall of the upper positioning plate 3.

[0039] Referring to Figure 2 and Figure 4 , a support bottom plate 32 for supporting the liquid pumping pipe 10 is slidably connected to the lower part of the upper positioning plate 3 along the radial direction. A through groove for the support bottom plate 32 to slidably pass through is formed in the lower side wall of the upper positioning plate 3. The sliding direction of the support bottom plate 32 is parallel to the sliding direction of the upper positioning plate 3. The upper end surface of the support bottom plate 32 abuts against the lower end surface of the liquid pumping pipe 10. The upper positioning plate 3 is provided with a second driving member for driving the support bottom plate 32 to slide. In this embodiment, the second driving member is a second oil cylinder 33. The cylinder body of the second oil cylinder 33 is fixedly connected to the lower outer wall of the upper positioning plate 3, and the piston rod of the second oil cylinder 33 is fixedly connected to the end of the support bottom plate 32 outside the upper positioning plate 3.

[0040] A stop insertion rod 34 is slidably connected to the upper part of the upper positioning plate 3 along the sliding direction of the support bottom plate 32. A through hole for the stop insertion rod 34 to slide through is formed in the side wall of the upper positioning plate 3. The stop insertion rod 34 is located above the support bottom plate 32. A stop insertion hole 101 for the stop insertion rod 34 to be inserted into is formed in the lower side wall of the liquid pumping pipe 10. There are multiple stop insertion holes 101 and they are symmetrically distributed around the axis of the liquid pumping pipe 10. A linkage member located between the upper positioning plate 3 and the upper side plate 22 is arranged between the stop insertion rod 34 and the support bottom plate 32. In this embodiment, the linkage member is a fixed vertical rod 35 fixedly connected between the stop insertion rod 34 and the support bottom plate 32. An installation hole is axially formed at the end of the stop insertion rod 34 close to the liquid pumping pipe 10. A positioning laser emitter 341 that emits laser to the stop insertion hole 101 is fixed in the installation hole of the stop insertion rod 34 on one side of the liquid pumping pipe 10, and a positioning laser receiver 342 is fixed in the installation hole of the stop insertion rod 34 on the other side of the liquid pumping pipe 10.

[0041] Refer to Figure 4 , Figure 5 , an installation groove is formed in the side wall of the upper positioning plate 3 close to the liquid pumping pipe 10. The installation groove is an arc-shaped groove. The upper positioning plate 3 is provided with an anti-slip resistance bladder 36 fixed to the inner wall of the installation groove. The anti-slip resistance bladder 36 is correspondingly arc-shaped. An anti-rotation convex rib 361 protruding towards the outer peripheral wall of the liquid pumping pipe 10 is arranged on the anti-slip resistance bladder 36. The length direction of the anti-rotation convex rib 361 is vertically arranged. There are multiple anti-rotation convex ribs 361 and they are spaced apart around the axis of the anti-slip resistance bladder 36. An installation plate 37 located above the upper side plate 22 is fixedly connected to the upper part of the side wall of the upper positioning plate 3 away from the liquid pumping pipe 10. An air regulating box 38 located above the upper side plate 22 is fixedly connected to the lower end surface of the installation plate 37. A piston plate 381 that divides the inner cavity into a first chamber 382 and a second chamber 383 is hermetically and slidably connected in the inner cavity of the air regulating box 38. The first chamber 382 is located at one end of the air regulating box 38 close to the upper positioning plate 3. A sliding hole communicating with the first chamber 382 is formed in the end surface of the air regulating box 38 close to the upper positioning plate 3. A movable rod 384 passing through the sliding hole is fixedly connected to the piston plate 381. The inner diameter of the sliding hole is larger than the outer diameter of the movable rod 384. A connecting arm 385 located between the air regulating box 38 and the upper positioning plate 3 is fixedly connected between the movable rod 384 and the stop insertion rod 34.

[0042] The air regulating box 38 is provided with an air pipe 39 communicating between the second chamber 383 and the inner cavity of the resistance increasing bladder 36. In the initial state, one end portion of the support bottom plate 32 protrudes from the clamping surface of the upper positioning plate 3, the stop plug 34 retracts into the through hole and does not protrude from the clamping surface of the upper positioning plate 3, the resistance increasing bladder 36 is in a normal state, and the resistance increasing bladder 36 is not exposed outside the clamping surface of the upper positioning plate 3; when the second oil cylinder 33 drives the support bottom plate 32 to slide towards the pump liquid pipe 10, driving the stop plug 34 to slide and be inserted into the stop jack 101, the piston plate 381 slides towards the pump liquid pipe 10, so that the volume of the second chamber 383 increases, and the gas in the resistance increasing bladder 36 is extracted through the air pipe 39, making the resistance increasing bladder 36 in a deflated state. When the second oil cylinder 33 drives the support bottom plate 32 to slide towards the pump liquid pipe 10 and retracts into the clamping surface of the upper positioning plate 3, the piston plate 381 slides away from the pump liquid pipe 10, so that the volume of the second chamber 383 decreases, and the gas is squeezed into the resistance increasing bladder 36 through the air pipe 39, thereby causing the resistance increasing bladder 36 to expand and the outer wall of the resistance increasing bladder 36 to abut against the outer peripheral wall of the pump liquid pipe 10.

[0043] The implementation principle of a pump tower hoisting and positioning structure in an embodiment of the present application is as follows: in the initial state, one end portion of the support bottom plate 32 protrudes from the clamping surface of the upper positioning plate 3, the stop plug 34 does not protrude from the clamping surface of the upper positioning plate 3, the resistance increasing bladder 36 is in a normal state. When installing the pump tower, first move the positioning bottom frame 1 to the installation position, the piston rod of the third oil cylinder 25 extends to drive the lower positioning plate 4 to slide towards the base 40, so that the two lower positioning plates 4 clamp the base 40, and after the lower positioning plate 4 is clamped and positioned on the base 40, the positioning bottom frame 1 is fixed;

[0044] The upper part of the pump liquid pipe 10 is lifted by the lifting rope of the hoisting device, so that the lower end surface of the pump liquid pipe 10 is located above the base 40 and the support bottom plate 32. Then the piston rod of the first oil cylinder 26 extends to drive the upper positioning plate 3 to slide towards the pump liquid pipe 10, so that the clamping surfaces of the two upper positioning plates 3 fit against the outer peripheral wall of the pump liquid pipe 10, and the upper end surface of the support bottom plate 32 abuts against the lower end surface of the pump liquid pipe 10, realizing the clamping and positioning of the pump liquid pipe 10 and making the pump liquid pipe 10 and the base 40 coaxial;

[0045] Then, the rotating mechanism 5 is used to drive the movable side plate 2 to slide around the axis of the base 40, so that the upper positioning plate 3 rotates and adjusts relative to the pump liquid pipe 10. After the alignment of the stop plug 34 and the stop jack 101 is achieved through the cooperation of the alignment laser emitter 341 and the alignment laser receiver 342, the movable side plate 2 stops rotating. The piston rod of the second oil cylinder 33 contracts to drive the support bottom plate 32 to slide towards the pump liquid pipe 10, thereby driving the stop plug 34 to slide and be inserted into the stop jack 101 through the fixed vertical rod 35, effectively restricting the relative rotation between the upper positioning plate 3 and the pump liquid pipe 10. At this time, the resistance increasing bladder 36 is in a deflated state;

[0046] Then, the jack 24 drives the upper side plate 22 to move upward, thereby driving the first positioning plate and the support bottom plate 32 to move upward together to lift the pump tower. At this time, the suspension ropes of the hoisting equipment are in a slack state. The movable side plate 2 is driven by the rotating mechanism 5 to slide along the axis of the base 40 again, so that the upper positioning plate 3 and the pump tower rotate and slide together around the axis of the pump liquid pipe 10, thereby adjusting the positions of the other two risers. After the adjustment is completed, the upper side plate 22 moves downward to reset, and the suspension ropes of the hoisting equipment resume the hoisting state of the pump tower;

[0047] During the downward movement of the upper side plate 22, the piston rod of the second oil cylinder 33 extends to drive the support bottom plate 32 to slide inwards towards the direction away from the pump liquid pipe 10 and retract into the through groove. After removing the support for the lower end of the pump liquid pipe 10, the fixed vertical rod 35, the stop plug rod 34, the connecting arm 385, and the movable rod 384 cooperate to drive the piston plate 381 to slide in the direction away from the pump liquid pipe 10, so that the volume of the second chamber 383 decreases, and the gas is squeezed into the resistance increasing bladder 36 through the air pipe 39, causing the resistance increasing bladder 36 to expand and the outer wall of the resistance increasing bladder 36 to abut against the outer peripheral wall of the pump liquid pipe 10. The suspension ropes of the hoisting equipment move downward, and the pump liquid pipe 10 moves downward relative to the upper positioning plate 3 due to its own weight, so that the lower part of the pump liquid pipe 10 is coaxially inserted into the inner hole of the base 40, and the outer wall of the resistance increasing bladder 36 abuts against the outer peripheral wall of the pump liquid pipe 10, effectively reducing the possibility of the pump liquid pipe 10 rotating around its own axis during the downward movement and insertion into the base 40. After the installation of the pump tower is completed, the piston rod of the first oil cylinder 26 resets, and the piston rod of the third oil cylinder 25 resets, and the positioning bottom frame 1 can be removed.

[0048] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A hoisting and positioning structure for a pump tower, characterized in that: It includes a positioning bottom frame (1), a pair of movable side plates (2) arranged on both sides of the positioning bottom frame (1) and respectively located on both sides of the liquid pumping pipe (10), and an upper positioning plate (3) arranged on the movable side plate (2) and located above the base (40) to clamp and position the lower part of the liquid pumping pipe (10). The clamping surface of the upper positioning plate (3) is an arc surface adapted to the outer peripheral wall of the liquid pumping pipe (10). The positioning bottom frame (1) is provided with a positioning guide groove (13) arranged in an arc shape, and the axis of the positioning guide groove (13) coincides with the axis of the base (40). The movable side plate (2) includes a lower side plate (21) and an upper side plate (22) slidably connected to the lower side plate (21) in the vertical direction and located above the lower side plate (21). A sliding block slidably connected to the positioning guide groove (13) is convexly fixed on the lower end surface of the lower side plate (21). The positioning bottom frame (1) is provided with a rotating mechanism (5) for driving the lower side plate (21) to slide around the axis of the base (40). A lifting member for driving the upper side plate (22) to slide is arranged between the upper side plate (22) and the lower side plate (21). The upper positioning plate (3) is slidably connected to the upper side plate (22) along the radial direction of the liquid pumping pipe (10). The upper side plate (22) is provided with a first driving member for driving the upper positioning plate (3) to slide. The lower part of the upper positioning plate (3) is slidably connected with a support bottom plate (32) along the radial direction. The sliding direction of the support bottom plate (32) is parallel to the sliding direction of the upper positioning plate (3). The upper end surface of the support bottom plate (32) abuts against the lower end surface of the liquid pumping pipe (10). The upper positioning plate (3) is provided with a second driving member for driving the support bottom plate (32) to slide; a stop insertion rod (34) is slidably connected to the upper part of the upper positioning plate (3) along the sliding direction of the support bottom plate (32). A stop insertion hole (101) for inserting the stop insertion rod (34) is formed in the side wall of the lower part of the liquid pumping pipe (10). There are a plurality of stop insertion holes (101) and they are symmetrically distributed around the axis of the liquid pumping pipe (10). A linkage member located between the upper positioning plate (3) and the upper side plate (22) is arranged between the stop insertion rod (34) and the support bottom plate (32).

2. The hoisting and positioning structure of a pump tower according to claim 1, wherein: The linkage member includes a fixed vertical rod (35) fixedly connected between the stop insertion rod (34) and the support bottom plate (32).

3. The hoisting and positioning structure of a pump tower according to claim 1, characterized in that: A positioning laser emitter (341) for emitting laser to the stop insertion hole (101) is arranged at the end of the stop insertion rod (34) on one side of the liquid pumping pipe (10), and a positioning laser receiver (342) is arranged at the end of the stop insertion rod (34) on the other side of the liquid pumping pipe (10).

4. A pump tower hoisting and positioning structure according to claim 1, characterized in that: An installation groove is formed in the side wall of the upper positioning plate (3) close to the liquid pumping pipe (10). The upper positioning plate (3) is provided with a resistance increasing bladder (36) fixed to the inner wall of the installation groove. An installation plate (37) is fixedly connected to the side wall of the upper positioning plate (3) far from the liquid pumping pipe (10). The installation plate (37) A gas regulating box (38) is fixedly connected. A piston plate (381) that divides the inner cavity into a first chamber (382) and a second chamber (383) is hermetically and slidably connected in the inner cavity of the gas regulating box (38). The first chamber (382) is located at one end of the gas regulating box (38) close to the upper positioning plate (3). A sliding hole communicating with the first chamber (382) is formed in the end face of the gas regulating box (38) close to the upper positioning plate (3). A movable rod (384) passing through the sliding hole is fixedly connected to the piston plate (381). A connecting arm (385) located between the gas regulating box (38) and the upper positioning plate (3) is fixedly connected between the movable rod (384) and the stop insertion rod (34). The gas regulating box (38) is provided with an air pipe (39) communicating between the second chamber (383) and the inner cavity of the resistance increasing bladder (36). When the stop insertion rod (34) is inserted into the stop insertion hole (101), the resistance increasing bladder (36) is in a deflated state and thus retracts into the installation groove.

5. A pump tower hoisting and positioning structure according to claim 4, characterized in that: The installation groove is an arc-shaped groove, and the resistance increasing bladder (36) is correspondingly arc-shaped. A rotation preventing convex rib (361) is protrudingly arranged on the outer peripheral wall of the resistance increasing bladder (36) close to the liquid pumping pipe (10). The length direction of the rotation preventing convex rib (361) is vertically arranged. A plurality of rotation preventing convex ribs (361) are provided and are spaced apart around the axis of the resistance increasing bladder (36).

6. The hoisting and positioning structure of a pump tower according to claim 1, characterized in that: It further includes a lower positioning plate (4) arranged on the movable side plate (2) and below the upper positioning plate (3) for clamping and fixing the base (40). The lower positioning plate (4) is slidably connected to the lower side plate (21) along the radial direction of the base (40). The clamping surface of the lower positioning plate (4) is an arc-shaped surface adapted to the outer peripheral wall of the upper part of the base (40). The lower side plate (21) is provided with a third driving member for driving the lower positioning plate (4) to slide.

7. A pump tower hoisting and positioning structure according to claim 1, characterized in that: The rotating mechanism (5) includes a pair of arc-shaped racks (51) respectively fixedly connected to the outer walls of the lower parts of the two lower side plates (21), a transmission gear (52) rotatably connected to the positioning bottom frame (1) and meshing with the arc-shaped racks (51), and a driving motor (53) fixedly connected to the positioning bottom frame (1) and driving the transmission gear (52) to rotate. The arc-shaped racks (51) and the base (40) are coaxial.

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