Pressure resistance testing device for steam pipeline after welding
By designing an adjustable down-pressure belt and upper-pressure belt structure, combined with horizontal and vertical rotary rod adjustment, the problem of inaccurate detection and low applicability of the compressive test device after steam pipe welding is solved, and efficient and low-cost detection effect is achieved.
Patent Information
- Application Number
- CN202421260429.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-04
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-06-04
AI Technical Summary
The existing pressure-resistant test device after welding of steam pipes is inaccurate and has low applicability, and the contact parts need to be frequently replaced according to the pipe size, which increases the cost and complexity of use.
A compression test device including a downward pressure belt and an upper pressure belt is designed. The downward pressure belt is a tape structure, which can adjust the contact area according to the change of the pipe size, and combines the adjustment structure of the transverse and vertical rotors to achieve adaptation of pipes of different sizes.
It improves the detection accuracy and applicability of compressive resistance test after steam pipe welding, and reduces the cost of use and operation complexity.
Smart Images
Figure CN223050984U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a compressive strength testing device, specifically a compressive strength testing device for steam pipelines after welding, belonging to the field of steam pipelines Background Technique
[0002] Steam pipelines are a type of thermal pipelines and are applicable to the thermal insulation projects of various cold and hot water pipelines with high and low temperatures; steam pipelines have good high-temperature resistance. Under normal circumstances, they can withstand high temperatures of 120°C. Through modification or combination with other heat insulation materials, they can withstand high temperatures of 180°C. Moreover, they also have good mechanical properties and heat insulation properties. Therefore, they are applicable to the thermal insulation projects of various hot and cold water pipelines with high and low temperatures
[0003] In order to detect the firmness or compressive capacity of the welded joints of steam pipelines, during the test process, a hydraulic press is used to press down the welded joints of the steam pipelines to visually inspect the compressive capacity of the welded joints. However, currently, during the process of pressing down the outer wall of the steam pipeline by the compressive strength testing device, the contact area between the pressing device and the outer wall of the pipeline is small. Therefore, the force on the surface of the steam pipeline is uneven, which affects the accuracy of the compressive strength detection. Although a contact member with a larger contact area specifically designed for the outer wall of the steam pipeline can avoid the problem of concentrated stress points, the contact member is generally of a single structure and cannot be adjusted according to the change of the pipeline size. Therefore, more contact members of different sizes need to be exchanged and used in cooperation, which will increase the use cost of the compressive strength testing device and make the detection of the compressive strength testing device very troublesome Content of the Utility Model
[0004] (I) Technical Problems to be Solved
[0005] The purpose of the utility model is to provide a compressive strength testing device for steam pipelines after welding in order to solve the above problems, so as to solve the problems of inaccurate detection and low applicability of the existing compressive strength testing device for steam pipelines after welding
[0006] (II) Technical Solutions
[0007] The utility model is realized through the following technical solutions: A compressive strength testing device for steam pipelines after welding, including a platform. The upper part of the platform is fixedly connected with a top plate through a fixing frame. A lower pressing plate is arranged at the bottom of the top plate, and a lifting driving component for driving the lower pressing plate to lift is arranged on the top plate. A first lead screw is rotatably connected in a first sliding groove opened at the bottom of the lower pressing plate. Threaded sleeves are sleeved on two external threads arranged on the outer side of the first lead screw. The bottom of the threaded sleeve is fixedly connected with a first connecting rod. A pressing belt is installed between the two first connecting rods. A fixing component is arranged on the platform
[0008] Preferably, the fixing component includes three mounting plates slidably connected to the upper part of the platform. A second lead screw is rotatably connected in a second chute opened in the upper part of the mounting plate. Two external threads provided on the outer side of the second lead screw are both sleeved with second sliders in a threaded manner. The upper part of the second slider is fixedly connected with a second connecting rod. An upper pressing belt is installed between the two second connecting rods.
[0009] Preferably, a transverse rotating rod is rotatably connected to the platform. Two first bevel gears that are meshed with each other are rotatably connected to one side of the mounting plate. The two first bevel gears are respectively fixedly connected to one end of the second lead screw and sleeved on the outer side of the transverse rotating rod in a sliding manner.
[0010] Preferably, a vertical rotating rod is rotatably connected to the upper part of the platform. The vertical rotating rod is located above the transverse rotating rod. Two second bevel gears that are meshed with each other are rotatably connected to one side of the lower pressing plate. The two second bevel gears are respectively fixedly connected to one end of the first lead screw and sleeved on the outer side of the vertical rotating rod in a sliding manner.
[0011] Preferably, two third bevel gears are rotatably connected to the upper part of the platform. The two third bevel gears are respectively fixedly sleeved at the bottom end of the vertical rotating rod and on the outer side of the transverse rotating rod.
[0012] Preferably, a limiting rod is threadedly connected in a threaded hole opened on one side of the mounting plate. The movable end of the limiting rod is in contact with one side of the platform.
[0013] Preferably, the lifting drive component includes a hydraulic rod and two stabilizing rods. The hydraulic rod is installed on the top plate. The movable end of the hydraulic rod and the bottom ends of the two stabilizing rods are both fixedly connected to the upper part of the lower pressing plate. The stabilizing rods are slidably connected in stabilizing grooves opened on the top plate.
[0014] The present utility model provides a compressive strength testing device for steam pipelines after welding, and the beneficial effects thereof are as follows:
[0015] For this compressive strength testing device for steam pipelines after welding, by arranging the lower pressing belt, the contact area between the compressive strength testing device and the pipeline is increased, so as to avoid the problem that the accuracy of the compressive strength detection at the welded joint of the pipeline is affected due to concentrated stress. Therefore, the accuracy of the compressive strength testing of the steam pipeline after welding can be effectively improved.
[0016] For this compressive strength testing device for steam pipelines after welding, by arranging the lower pressing belt, and the lower pressing belt is of a cloth belt structure and can change its shape arbitrarily. Therefore, it can change accordingly according to the change of the pipeline size. This device is simple to operate and convenient to use. Therefore, the applicability and practicability of the compressive strength testing device for steam pipelines after welding can be effectively improved, and the use cost and detection complexity of the compressive strength testing device for steam pipelines after welding can be effectively reduced.
[0017] After the steam pipeline is welded, the compressive strength testing device can be adjusted simply and conveniently according to the outer diameter size of the pipeline by setting the horizontal rotating rod and the vertical rotating rod and through the cooperation of the relevant structures. Therefore, the operation convenience of the compressive strength testing device after the steam pipeline is welded can be effectively improved. Brief Description of the Drawings
[0018] Figure 1 It is a three-dimensional schematic diagram of the whole utility model;
[0019] Figure 2 It is a three-dimensional schematic diagram of the platform of the utility model;
[0020] Figure 3 It is a three-dimensional schematic diagram of the cooperation between the lower pressing belt and the upper pressing belt of the utility model;
[0021] Figure 4 It is a three-dimensional schematic diagram of the cooperation between the mounting plate, the lower pressing plate and the top plate of the utility model.
[0022]
Description of the Main Component Symbols
[0023] 1. Platform; 2. Top plate; 3. Lower pressing plate; 4. First lead screw; 5. First connecting rod; 6. Lower pressing belt; 7. Mounting plate; 8. Second lead screw; 9. Second connecting rod; 10. Upper pressing belt; 11. Horizontal rotating rod; 12. First bevel gear; 13. Vertical rotating rod; 14. Second bevel gear; 15. Third bevel gear; 16. Limiting rod; 17. Hydraulic rod; 18. Stabilizing rod. Detailed Embodiment
[0024] The embodiment of the utility model provides a compressive strength testing device after the steam pipeline is welded.
[0025] Please refer to Figures 1 to 4 , which includes a platform 1. The upper part of the platform 1 is fixedly connected with a top plate 2 through a fixing frame. A lower pressing plate 3 is arranged at the bottom of the top plate 2, and a lifting driving component for driving the lower pressing plate 3 to lift is arranged on the top plate 2. A first lead screw 4 is rotatably connected in a first chute opened at the bottom of the lower pressing plate 3. Threaded sleeves are sleeved on two external threads arranged on the outer side of the first lead screw 4. The bottom of the threaded sleeve is fixedly connected with a first connecting rod 5. A lower pressing belt 6 is installed between the two first connecting rods 5. A fixing component is arranged on the platform 1;
[0026] Place the pipeline on the fixing component, then align the lower pressing belt 6 with the welded part of the pipeline. After that, use the lifting driving component to drive the lower pressing plate 3 to descend. The lower pressing plate 3 then contacts the upper surface of the pipeline by using the lower pressing belt 6, and then presses the pipeline through the lower pressing belt 6 to detect the compressive capacity of the welded part of the pipeline;
[0027] The pressing belt 6 is a cloth belt structure and can change according to the outer diameter of the pipeline, so it can adapt to pipelines of different sizes and models; rotate the first lead screw 4 according to the pipeline size, so as to drive the two first connecting rods 5 to approach or move away from each other by using the first lead screw 4, so that the distance between the two ends of the pressing belt 6 can be adjusted to facilitate the pressing belt 6 to adapt to pipelines of different sizes and models.
[0028] Please refer to Figure 1 , the fixing component includes three mounting plates 7 slidably connected to the upper part of the platform 1. A second lead screw 8 is rotatably connected in the second chute opened in the upper part of the mounting plate 7. Two second sliders are threadedly sleeved on the two external threads arranged on the outer side of the second lead screw 8. The upper part of the second slider is fixedly connected with a second connecting rod 9. An upper pressing belt 10 is installed between the two second connecting rods 9;
[0029] The pipeline is placed in the upper pressing belt 10 on the mounting plate 7. The upper pressing belts 10 at both ends support both ends of the pipeline, and the middle upper pressing belt 10 cooperates with the lower pressing belt 6 to respectively contact the left and right sides of the pipeline welding joint;
[0030] The upper pressing belt 10 is a cloth belt structure and can change according to the outer diameter of the pipeline, so it can adapt to pipelines of different sizes and models; rotate the second lead screw 8 according to the pipeline size, so as to drive the two second connecting rods 9 to approach or move away from each other by using the second lead screw 8, so that the distance between the two ends of the upper pressing belt 10 can be adjusted to facilitate the upper pressing belt 10 to adapt to pipelines of different sizes and models.
[0031] Please refer to Figure 2 and Figure 3 , a transverse rotating rod 11 is rotatably connected to the platform 1. Two first bevel gears 12 that are meshed with each other are rotatably connected to one side of the mounting plate 7. The two first bevel gears 12 are respectively fixedly connected to one end of the second lead screw 8 and sleeved on the outer side of the transverse rotating rod 11 in a sliding manner;
[0032] By rotating the transverse rotating rod 11, the transverse rotating rod 11 drives each second lead screw 8 to rotate together by using the two mutually meshed first bevel gears 12, so as to conveniently adjust the shapes of the upper pressing belts 10 on each mounting plate 7 together.
[0033] Please refer to Figure 2 , a vertical rotating rod 13 is rotatably connected to the upper part of the platform 1. The vertical rotating rod 13 is located above the transverse rotating rod 11. Two second bevel gears 14 that are meshed with each other are rotatably connected to one side of the lower pressing plate 3. The two second bevel gears 14 are respectively fixedly connected to one end of the first lead screw 4 and sleeved on the outer side of the vertical rotating rod 13 in a sliding manner;
[0034] By rotating the vertical rotating rod 13, the vertical rotating rod 13 drives the first lead screw 4 to rotate by using the second bevel gear 14.
[0035] Please refer toFigure 2 Above the platform 1, two third bevel gears 15 are rotatably connected. The two third bevel gears 15 are respectively fixedly sleeved at the bottom end of the vertical rotating rod 13 and the outer side of the horizontal rotating rod 11.
[0036] When rotating the vertical rotating rod 13, the vertical rotating rod 13 will also drive the horizontal rotating rod 11 to rotate by means of the third bevel gear 15. In this way, the lower pressing plate 3 and the upper pressing belt 10 can be adjusted simultaneously, and the end spacings of their adjustments are the same.
[0037] Please refer to Figure 1 In the threaded hole opened on the side of the mounting plate 7, a limiting rod 16 is threadedly connected. The movable end of the limiting rod 16 is in contact with one side of the platform 1.
[0038] By rotating the limiting rod 16, the movable end of the limiting rod 16 abuts against the side wall of the platform 1. Therefore, the friction between the mounting plate 7 and the platform 1 can be increased, so that the mounting plate 7 can be fixed on the platform 1 and cannot slide.
[0039] Please refer to Figure 1 The lifting drive assembly includes a hydraulic rod 17 and two stabilizing rods 18. The hydraulic rod 17 is installed on the top plate 2. The movable end of the hydraulic rod 17 and the bottom ends of the two stabilizing rods 18 are fixedly connected to the upper part of the lower pressing plate 3. The stabilizing rods 18 are slidably connected in the stabilizing grooves opened on the top plate 2.
[0040] The hydraulic rod 17 is drivingly connected to a hydraulic pump, and the lower pressing plate 3 is driven to lift by means of the hydraulic rod 17.
[0041] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.
Claims
1. A steam pipeline post-welding compression test device, comprising a platform (1), characterized in that: The upper part of the platform (1) is fixedly connected to a top plate (2) via a fixing frame, a lower pressure plate (3) is arranged at the bottom of the top plate (2), and a lifting drive assembly for driving the lower pressure plate (3) to move up and down is arranged on the top plate (2), a first screw rod (4) is rotatably connected in a first slide groove opened at the bottom of the lower pressure plate (3), a first slider is threadedly sleeved on two external threads arranged on the outer side of the first screw rod (4), a first connecting rod (5) is fixedly connected to the bottom of the first slider, a lower pressure belt (6) is installed between the two first connecting rods (5), and a fixing assembly is arranged on the platform (1).
2. The steam pipeline post-welding compression test device according to claim 1, characterized in that: The fixing assembly comprises three mounting plates (7) slidably connected to the upper part of the platform (1); a second screw rod (8) is rotatably connected in a second sliding groove provided in the upper part of the mounting plate (7); a second slider is threadedly sleeved on two external threads provided on the outer side of the second screw rod (8); a second connecting rod (9) is fixedly connected to the upper part of the second slider; and an upper pressure belt (10) is installed between the two second connecting rods (9).
3. The steam pipeline post-welding compression test device according to claim 2 is characterized in that: The platform (1) is rotatably connected to a transverse rotating rod (11), and one side of the mounting plate (7) is rotatably connected to two first bevel gears (12) that are meshed with each other, the two first bevel gears (12) are respectively fixedly connected to one end of the second screw rod (8), and are slidably sleeved on the outside of the transverse rotating rod (11).
4. The steam pipeline post-welding compression test device according to claim 3 is characterized in that: The upper part of the platform (1) is rotatably connected to a vertical rotating rod (13), and the vertical rotating rod (13) is located above the horizontal rotating rod (11). One side of the lower pressure plate (3) is rotatably connected to two second bevel gears (14) that are meshed with each other, and the two second bevel gears (14) are respectively fixedly connected to one end of the first screw rod (4), and are slidably sleeved on the outer side of the vertical rotating rod (13).
5. The steam pipeline post-welding compression test device according to claim 4 is characterized in that: The upper part of the platform (1) is rotatably connected to two third bevel gears (15), and the two third bevel gears (15) are respectively fixedly sleeved on the bottom end of the vertical rotating rod (13) and the outer side of the horizontal rotating rod (11).
6. The steam pipeline post-welding compression test device according to claim 3, characterized in that: A limit rod (16) is threadedly connected in a threaded hole formed on the side of the mounting plate (7), and a movable end of the limit rod (16) contacts one side of the platform (1).
7. The steam pipeline post-welding compression test device according to claim 1, characterized in that: The lifting drive assembly comprises a hydraulic rod (17) and two stabilizing rods (18), wherein the hydraulic rod (17) is mounted on the top plate (2), the movable end of the hydraulic rod (17) and the bottom end of the stabilizing rod (18) are both fixedly connected to the upper part of the lower pressure plate (3), and the stabilizing rod (18) is slidably connected in a stabilizing groove provided on the top plate (2).