Pipe expanding equipment for composite steel pipe lined with stainless steel
By designing a pipe expansion equipment including a base, a shaped frame, a bidirectional lead screw, a support slide platform, a cylinder and a pipe clamping mechanism, the problem of narrow application scope of traditional equipment is solved, and adaptive adjustment and rapid drainage effect to multiple specifications of composite steel pipes are achieved.
Patent Information
- Application Number
- CN202422162178.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-04
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-09-04
AI Technical Summary
Traditional pipe expansion equipment can only be used for pipe expansion for one length of composite steel pipe, and the scope of application is poor and cannot meet the needs of composite steel pipes of different lengths.
A pipe expansion equipment for stainless steel composite steel pipe lined is designed, including a base, a shaped frame, a bidirectional lead screw, a support slide platform, a cylinder and a pipe clamping mechanism. By adjusting the spacing between the two-way lead screw and a support slide platform, it adapts to composite steel pipes of different lengths, and clamping and fixing steel pipes of different diameters through V-shaped clamping blocks.
The equipment can adapt to a variety of composite steel pipes of different specifications, improves the applicable performance, expands the scope of application, and achieves rapid drainage through the lifting of the hydraulic cylinder, improving drainage thoroughness.
Smart Images
Figure CN223011708U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of expanding tube processing of composite steel pipes, in particular to an expanding tube device for an inner-lined stainless steel composite steel pipe. Background Technique
[0002] The inner-lined stainless steel composite steel pipe is a composite material, which is composed of an outer carbon steel pipe and an inner stainless steel pipe, and has the double advantages of carbon steel pipes and stainless steel pipes. Therefore, it is widely used in the fields of petroleum, chemical industry, and electric power. During the manufacturing process of stainless steel composite steel pipes, in order to ensure that the inner-lined stainless steel pipe can perfectly fit the inner wall of the carbon steel pipe, generally, the two are compounded by an expanding tube method. The commonly used expanding tube method is the water injection expanding tube method, in which high-pressure water is injected into the stainless steel pipe, and the purpose of expanding the tube is achieved by the pressure of the high-pressure water.
[0003] However, it is found in the use of common water injection expanding tube devices that since the lengths of composite steel pipes vary with different customer requirements, most common expanding tube devices can only perform expanding tube treatment on composite steel pipes of one length, with too strong limitations. For composite steel pipes of other lengths, additional paired expanding tube devices are required for operation, resulting in poor applicability of traditional expanding tube devices.
[0004] Therefore, it is necessary to provide a new expanding tube device for inner-lined stainless steel composite steel pipes to solve the above technical problems. Content of the Utility Model
[0005] The purpose of the utility model is to provide an expanding tube device for an inner-lined stainless steel composite steel pipe that can perform expanding tube treatment on composite steel pipes of various different specifications and has strong applicability.
[0006] To solve the above technical problems, the expanding tube device for the stainless steel lined composite steel pipe provided by the utility model includes: a base and a U-shaped frame arranged above the base. A first bidirectional lead screw is rotatably installed in the U-shaped frame. Two support sliders are threadedly installed on the first bidirectional lead screw. The tops of the two support sliders are fixedly installed with bearing plates. The tops of the two bearing plates are respectively fixedly installed with a first side frame plate and a second side frame plate. A first cylinder is fixedly installed on one side of the first side frame plate away from the second side frame plate. The output shaft of the first cylinder penetrates through the first side frame plate and is slidably connected to the first side frame plate. A second cylinder is fixedly installed on one side of the second side frame plate away from the first side frame plate. The output shaft of the second cylinder penetrates through the second side frame plate and is slidably connected to the second side frame plate. A first sealing head is installed on the output shaft of the first cylinder through bolts. A second sealing head is installed on the output shaft of the second cylinder through bolts. A water inlet cavity is formed on one side of the first sealing head close to the second sealing head. A connecting pipe is fixedly installed on the first sealing head. The connecting pipe is communicated with the water inlet cavity. Clamping mechanisms are arranged on the tops of the two bearing plates to clamp and fix the stainless steel lined composite steel pipe.
[0007] Preferably, a support seat is fixedly installed on the top of the base. A rotating seat is hinged on the support seat. The top of the rotating seat is fixedly connected to the U-shaped frame. A hydraulic cylinder is hinged on the top of the base. A hinge seat is fixedly installed on the bottom of the U-shaped frame. The output shaft of the hydraulic cylinder is hinged to the hinge seat.
[0008] Preferably, a high-pressure water pump is fixedly installed on the top of the first side frame plate. One end of a connecting hose is fixedly installed at the water outlet end of the high-pressure water pump. The other end of the connecting hose is fixedly connected to the connecting pipe through a flange.
[0009] Preferably, the clamping mechanism includes a C-shaped frame. The C-shaped frame is fixedly installed on the top of the bearing plate. A second bidirectional lead screw is rotatably installed in the C-shaped frame. Two linkage belt plates are threadedly installed on the second bidirectional lead screw. V-shaped clamping blocks are fixedly installed on one side of the two linkage belt plates close to each other. The central axis between the two V-shaped clamping blocks is on the same axis as the first sealing head and the second sealing head.
[0010] Preferably, a first driving motor is fixedly installed on the outer wall of one side of the U-shaped frame. The output shaft of the first driving motor is fixedly connected to one end of the first bidirectional lead screw. Two transverse clamping rods are fixedly installed in the U-shaped frame. The two transverse clamping rods penetrate through the two support sliders and are slidably connected to the two support sliders.
[0011] Preferably, a second driving motor is fixedly installed at the top of the C-shaped frame. The output shaft of the second driving motor is fixedly connected to the top end of the second bidirectional lead screw. A vertical clamping rod is fixedly installed inside the C-shaped frame. The vertical clamping rod penetrates through the two linkage belt plates and is slidably connected to the two linkage belt plates.
[0012] Preferably, a water guide groove is fixedly installed on the second side frame plate. The water guide groove is located below the second sealing head.
[0013] Compared with the related art, the tube expanding device for the stainless steel lined composite steel pipe provided by the present utility model has the following beneficial effects:
[0014] The present utility model provides a tube expanding device for a stainless steel lined composite steel pipe. Through the cooperation between the first bidirectional lead screw and the two support sliding tables, the distance between the two C-shaped frames can be adjusted, so that it can be adaptively adjusted according to the length of the composite steel pipe, improving the applicability. Moreover, the unique shape of the V-shaped clamping block can clamp and fix composite steel pipes with various different diameters, further meeting the actual use requirements and enhancing the scope of application. In addition, through the lifting of the hydraulic cylinder, the composite steel pipe can be discharged from the used high-pressure water in an inclined state, which not only improves the drainage thoroughness but also forms a rapid drainage. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 is a schematic structural diagram of a preferred embodiment of the tube expanding device for the stainless steel lined composite steel pipe provided by the present utility model;
[0016] Figure 2 is a schematic connection structure diagram of the U-shaped frame and the hinge seat in the present utility model;
[0017] Figure 3 is a schematic structure diagram of the opening of the water inlet cavity in the present utility model;
[0018] Figure 4 is a schematic connection structure diagram of the linkage belt plate and the V-shaped clamping block in the present utility model;
[0019] Figure 5 is a schematic diagram of the state of the composite steel pipe during tube expansion in the present utility model.
[0020] Reference numerals in the figure: 1, base; 2, support seat; 3, rotating seat; 4, U-shaped frame; 5, hydraulic cylinder; 6, hinge seat; 7, first double lead screw; 8, support slide; 9, bearing plate; 10, first side frame plate; 11, second side frame plate; 12, first cylinder; 13, second cylinder; 14, first sealing head; 15, second sealing head; 16, water inlet chamber; 17, connecting pipe; 18, high-pressure water pump; 19, connecting hose; 20, C-shaped frame; 21, second double lead screw; 22, linkage belt plate; 23, V-shaped clamp block. Detailed implementation mode
[0021] The present invention will be further described below in conjunction with the accompanying drawings and the implementation mode.
[0022] Please refer to Figures 1 - 5 , in which, Figure 1 is a schematic structural diagram of a preferred embodiment of the tube expanding device for the inner-lined stainless steel composite steel pipe provided by the present invention; Figure 2 is a schematic connection structure diagram of the U-shaped frame and the hinge seat in the present invention; Figure 3 is a schematic opening structure diagram of the water inlet chamber in the present invention; Figure 4 is a schematic connection structure diagram of the linkage belt plate and the V-shaped clamp block in the present invention; Figure 5This is a schematic diagram of the state of the composite steel pipe during tube expansion in the present utility model. The tube expansion equipment for the stainless steel lined composite steel pipe includes: a base 1 and a U-shaped frame 4 arranged above the base 1. A first double lead screw 7 is rotatably installed in the U-shaped frame 4, and a first driving motor is fixedly installed on the outer wall of one side of the U-shaped frame 4, and the output shaft thereof is fixedly connected to one end of the first double lead screw 7. Two support sliders 8 are threadedly installed on the first double lead screw 7, and bearing plates 9 are fixedly installed on the tops of the two support sliders 8. In order to ensure that the support sliders 8 can only move in a straight line, two transverse clamping rods are fixedly installed in the U-shaped frame 4. The two transverse clamping rods penetrate through the two support sliders 8 and are slidably connected to the two support sliders 8. A first side frame plate 10 and a second side frame plate 11 are respectively fixedly installed on the tops of the two bearing plates 9. A first cylinder 12 is fixedly installed on the side of the first side frame plate 10 away from the second side frame plate 11, and its output shaft penetrates through the first side frame plate 10 and is slidably connected to the first side frame plate 10. A second cylinder 13 is fixedly installed on the side of the second side frame plate 11 away from the first side frame plate 10, and its output shaft penetrates through the second side frame plate 11 and is slidably connected to the second side frame plate 11. A first sealing head 14 is installed on the output shaft of the first cylinder 12 through bolts, and a second sealing head 15 is installed on the output shaft of the second cylinder 13 through bolts. The two sealing heads can seal the two ends of the composite steel pipe to be tube-expanded, ensuring that the high-pressure water fully exerts its function inside the steel pipe, and the two sealing heads can be adaptively replaced according to needs to meet the requirements of tube expansion for steel pipes of different diameters. A water guide groove is fixedly installed on the second side frame plate 11, and the water guide groove is located below the second sealing head 15, which facilitates the smooth discharge of the used water. An inlet cavity 16 is formed on the side of the first sealing head 14 close to the second sealing head 15. A connecting pipe 17 is fixedly installed on the first sealing head 14, and the connecting pipe 17 is communicated with the inlet cavity 16. A high-pressure water pump 18 is fixedly installed on the top of the first side frame plate 10, and one end of a connecting hose 19 is fixedly installed at its water outlet end. The other end of the connecting hose 19 is fixedly connected to the connecting pipe 17 through a flange, enabling the high-pressure water to be smoothly discharged into the composite steel pipe. Clamping mechanisms are provided on the tops of the two bearing plates 9 to clamp and fix the stainless steel composite steel pipe.
[0023] In the above method, in order to thoroughly and quickly discharge the used high-pressure water, a support seat 2 is fixedly installed on the top of the base 1. A rotating seat 3 is hinged on the support seat 2, and the top of the rotating seat 3 is fixedly connected to the U-shaped frame 4. A hydraulic cylinder 5 is hinged on the top of the base 1. A hinge seat 6 is fixedly installed at the bottom of the U-shaped frame 4, and the output shaft of the hydraulic cylinder 5 is hinged to the hinge seat 6. By extending the output shaft of the hydraulic cylinder 5, the composite steel pipe can be inclined to directly discharge the high-pressure water inside it.
[0024] In the above-mentioned pipe clamping mechanism, there is a U-shaped frame 20 fixedly installed on the top of the bearing plate 9. A second bidirectional lead screw 21 is rotatably installed in the U-shaped frame 20. Two linkage belt plates 22 are threadedly installed on the second bidirectional lead screw 21. On the side of the two linkage belt plates 22 close to each other, V-shaped clamping blocks 23 are fixedly installed. The central axis between the two V-shaped clamping blocks 23 is on the same axis as the first sealing head 14 and the second sealing head 15. A second driving motor is fixedly installed on the top of the U-shaped frame 20, and its output shaft is fixedly connected to the top end of the second bidirectional lead screw 21. A vertical positioning rod is fixedly installed in the U-shaped frame 20. The vertical positioning rod passes through the two linkage belt plates 22 and is slidably connected to the two linkage belt plates 22, playing a limiting role to ensure that the linkage belt plates 22 can only perform linear lifting and lowering.
[0025] The working principle of the expanding pipe equipment for the stainless steel lined composite steel pipe provided by the present utility model is as follows:
[0026] In the initial state, the output shafts of the first cylinder 12 and the second cylinder 13 are both in the retracted state, and the water inlet end of the high-pressure water pump 18 is connected to an external water pool through an external hose;
[0027] When expanding the composite steel pipe, first reverse-start the two second driving motors to move the corresponding two V-shaped clamping blocks 23 in the direction away from each other, thereby opening the space between them. Then, place the composite steel pipe on the two V-shaped clamping blocks 23 below, and then forward-start the two second driving motors. The corresponding two V-shaped clamping blocks 23 move in the direction close to each other, and finally the composite steel pipe is clamped by the four V-shaped clamping blocks 23;
[0028] Then, start the output shafts of the first cylinder 12 and the second cylinder 13 to extend. The first sealing head 14 and the second sealing head 15 move in the direction close to each other and finally insert into the composite steel pipe to form a seal. Immediately afterwards, start the high-pressure water pump 18. The high-pressure water pump 18 pumps high-pressure water into the water inlet cavity 16 through the connecting pipe 17 and then flows into the composite steel pipe smoothly. By continuously introducing high-pressure water into the composite steel pipe, the stainless steel inner liner can expand and thus tightly fit with the inner wall of the carbon steel outer ring;
[0029] After the pipe expansion is completed, first place a waste water vehicle below one side of the water diversion trough, and then start the output shaft of the hydraulic cylinder 5 to extend, so that the U-shaped frame 4 rotates around the hinge axis between the support seat 2 and the rotating seat 3, and finally the composite steel pipe is in an inclined state. Subsequently, start the output shaft of the second cylinder 13 to retract, take out the second sealing head 15, and the water in the steel pipe will automatically flow out and be discharged into the waste water vehicle through the water diversion trough. After draining, start the output shaft of the hydraulic cylinder 5 to retract, bring the U-shaped frame 4 back to the original state, then start the output shaft of the first cylinder 12 to retract, take out the first sealing head 14, and immediately reverse-start the two second driving motors to take out the steel pipe;
[0030] In the later use, when it is necessary to adjust the distance between the two U-shaped frames 20 according to the length of the composite steel pipe, the first driving motor can be started, and its output shaft drives the first bidirectional lead screw 7 to rotate, so that the two support sliding tables 8 move closer to or away from each other. Until the distance between the two U-shaped frames 20 meets the length of the composite steel pipe, the tube expanding treatment can be continued;
[0031] Moreover, due to the shape of the V-shaped clamp block 23, the tube expanding work can be carried out on composite steel pipes with different diameters.
[0032] Compared with the related technology, the tube expanding device for the stainless steel lined composite steel pipe provided by the present utility model has the following beneficial effects:
[0033] The present utility model provides a tube expanding device for a stainless steel lined composite steel pipe. By the cooperation between the first bidirectional lead screw 7 and the two support sliding tables 8, the distance between the two U-shaped frames 20 can be adjusted, so that it can be adaptively adjusted according to the length of the composite steel pipe, improving the applicability. Moreover, the unique shape of the V-shaped clamp block 23 can clamp and fix composite steel pipes with various different diameters, further meeting the actual use requirements and enhancing the scope of application. In addition, through the lifting of the hydraulic cylinder 5, the composite steel pipe can discharge the high-pressure water after use in an inclined state, which not only improves the drainage thoroughness but also forms a rapid drainage.
[0034] The above are only the embodiments of the present utility model, and thus do not limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present utility model.
Claims
1. A tube expansion device for a stainless steel lined composite steel tube, comprising a base and a U-shaped frame arranged above the base, characterized in that: A first bidirectional lead screw is rotatably installed inside the U-shaped frame. Two support sliders are threadedly installed on the first bidirectional lead screw. A bearing plate is fixedly installed on the top of each of the two support sliders. A first side frame plate and a second side frame plate are respectively and fixedly installed on the tops of the two bearing plates. A first cylinder is fixedly installed on one side of the first side frame plate away from the second side frame plate. The output shaft of the first cylinder penetrates through the first side frame plate and is slidably connected to the first side frame plate. A second cylinder is fixedly installed on one side of the second side frame plate away from the first side frame plate. The output shaft of the second cylinder penetrates through the second side frame plate and is slidably connected to the second side frame plate. A first sealing head is installed on the output shaft of the first cylinder through bolts. A second sealing head is installed on the output shaft of the second cylinder through bolts. A water inlet cavity is formed on one side of the first sealing head close to the second sealing head. A connecting pipe is fixedly installed on the first sealing head. The connecting pipe is communicated with the water inlet cavity. Clamping mechanisms are arranged on the tops of the two bearing plates to clamp and fix the stainless steel composite steel pipe.
2. The tube expansion equipment for lined stainless steel composite steel pipe according to claim 1, characterized in that: A support seat is fixedly installed on the top of the base platform. A rotating seat is hinged on the support seat. The top of the rotating seat is fixedly connected to the U-shaped frame. A hydraulic cylinder is hinged on the top of the base platform. A hinge seat is fixedly installed at the bottom of the U-shaped frame. The output shaft of the hydraulic cylinder is hinged to the hinge seat.
3. The tube expansion equipment for lined stainless steel composite steel pipe according to claim 1, characterized in that: A high-pressure water pump is fixedly installed on the top of the first side frame plate. One end of a connecting hose is fixedly installed at the water outlet end of the high-pressure water pump. The other end of the connecting hose is fixedly connected to the connecting pipe through a flange.
4. The tube expansion equipment for lined stainless steel composite steel pipe according to claim 1, characterized in that: The clamping mechanism includes a U-shaped frame. The U-shaped frame is fixedly installed on the top of the bearing plate. A second bidirectional lead screw is rotatably installed inside the U-shaped frame. Two linkage belt plates are threadedly installed on the second bidirectional lead screw. V-shaped clamping blocks are fixedly installed on one side of each of the two linkage belt plates close to each other. The central axis between the two V-shaped clamping blocks is on the same axis as the first sealing head and the second sealing head.
5. The tube expansion equipment for lined stainless steel composite steel pipe according to claim 1, characterized in that: A first driving motor is fixedly installed on the outer wall of one side of the U-shaped frame. The output shaft of the first driving motor is fixedly connected to one end of the first bidirectional lead screw. Two transverse positioning rods are fixedly installed inside the U-shaped frame. The two transverse positioning rods penetrate through the two support sliders and are slidably connected to the two support sliders.
6. The tube expansion equipment for lined stainless steel composite steel pipe according to claim 4, characterized in that: A second driving motor is fixedly installed on the top of the U-shaped frame. The output shaft of the second driving motor is fixedly connected to the top end of the second bidirectional lead screw. A vertical positioning rod is fixedly installed inside the U-shaped frame. The vertical positioning rod penetrates through the two linkage belt plates and is slidably connected to the two linkage belt plates.
7. The tube expansion equipment for stainless steel lined composite steel tube according to claim 1, characterized in that: A water guide groove is fixedly installed on the second side frame plate. The water guide groove is located below the second sealing head.