Pressure detection device for seamless steel pipe

Abstract

The utility model belongs to pressure detection technical field, concretely relates to a seamless steel tube pressure detection device, including base, is equipped with the support plate on both sides of base, is equipped with motor on one side of support plate, is equipped with sucking disc on motor output shaft, is equipped with pressure assembly on the other side of support plate, is equipped with two -way pressure assembly on one side of pressure assembly, is equipped with fixed block on base, is equipped with slide rail on fixed block, two -way pressure assembly includes with the upper mounting plate of base connection, is equipped with two -way telescopic link on the upper mounting plate, is equipped with two -way upper clamping block on two -way telescopic link downside, is equipped with two -way lower clamping block on two -way upper clamping block downside, is equipped with lower mounting plate on two -way lower clamping block downside, is equipped with two -way lower telescopic link on lower mounting plate downside, the utility model two -way pressure assembly's up and down V type clamping block controls through independent telescopic link, can set pressure difference, simulates the uneven stress state in the actual use of steel pipe, solves the limitation that traditional device can only single pressure detection.

Description

Technical Field

[0001] This utility model belongs to the field of pressure resistance testing technology, specifically relating to a pressure resistance testing device for seamless steel pipes. Background Technology

[0002] Seamless steel pipes, as core components for high-pressure fluid transportation, require rigorous testing of their pressure resistance. Existing technologies have the following limitations: pressure application is unidirectional, often unidirectional or at a single point, failing to simulate the complex stress states encountered in actual use; pressure regulation precision is insufficient, making it difficult to create a controllable difference in clamping force, leading to multiple disassemblies and reassemblies of the steel pipe for multi-condition testing, resulting in low efficiency (each test takes more than 10 minutes); and clamping stability is poor, easily causing uneven pressure distribution due to roundness errors in the steel pipe, leading to high deviation rates in test data. This invention addresses these problems by achieving efficient and accurate multi-condition pressure resistance testing through structural innovation. Utility Model Content

[0003] In view of the above-mentioned shortcomings in the prior art, the present invention provides a pressure resistance testing device for seamless steel pipes to solve the problems in the background art.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A pressure resistance testing device for seamless steel pipes includes a base with support plates on both sides. A motor is mounted on one side of the support plate, and a suction cup is mounted on the output shaft of the motor. A pressure application component is mounted on the other side of the support plate, and a bidirectional pressure component is mounted on one side of the pressure application component. A fixing block is mounted on the base, and a slide rail is mounted on the fixing block. The bidirectional pressure component includes an upper mounting plate connected to the base, a bidirectional telescopic rod on the upper mounting plate, a bidirectional upper clamping block below the bidirectional telescopic rod, a bidirectional lower clamping block below the bidirectional upper clamping block, a lower mounting plate below the bidirectional lower clamping block, and a bidirectional lower telescopic rod below the lower mounting plate. The base has a telescopic hole through which the bidirectional lower telescopic rod passes.

[0006] Furthermore, the pressure application component includes a slider connected to the slide rail, a fixed plate on the slider, a lower clamping block on the fixed plate, an upper clamping block on the upper side of the lower clamping block, the clamping blocks being fixedly connected to the pressure application telescopic rod, and a pressure application mounting plate on the lower side of the pressure application telescopic rod.

[0007] Furthermore, the pressure mounting plate is fixedly connected to the fixing plate, the slider is bolted to the fixing plate, and both the lower clamping block and the upper clamping block have a V-shaped structure with a polyurethane anti-slip layer covering the surface.

[0008] Furthermore, the lower mounting plate is fixedly connected to the base, the upper mounting plate is fixedly connected to the base, and the upper mounting plate is bolted to the bidirectional telescopic rod.

[0009] Furthermore, both the bidirectional lower clamping block and the bidirectional upper clamping block have a V-shaped structure and are covered with a polyurethane anti-slip layer.

[0010] Furthermore, the bidirectional upper clamping block has a built-in pressure sensor, which is electrically connected to the PLC control system.

[0011] Furthermore, the support plate is provided with through holes, and the left support plate is provided with stepped through holes.

[0012] Furthermore, the upper clamping block has a built-in pressure sensor, and the pressure mounting plate has a U-shaped structure.

[0013] Compared with the prior art, this utility model has the following advantages:

[0014] The upper and lower V-shaped clamping blocks of the bidirectional pressure assembly are controlled by independent telescopic rods, and the pressure difference value can be set from 0 to 10 kN to simulate the uneven stress state of the steel pipe in actual use, thus solving the limitation of traditional devices that can only detect single pressure. Two sets of axially distributed pressure units realize radial multi-point vertical pressure on the steel pipe, and improve the coverage of pressure detection points.

[0015] The motor-driven suction cup rotates the steel pipe (0-360° adjustable). Combined with the positioning function of the V-shaped clamping block, the entire circumference of the steel pipe can be inspected without manual flipping. The inspection time for a single pipe is shortened and the efficiency is improved. The V-shaped clamping block fits tightly with the outer circle of the steel pipe, and the pressure sensor provides real-time feedback on the clamping force (5-20kN adjustable), avoiding inspection deviations caused by slippage.

[0016] The position of the pressure-applying component can be adjusted by sliding rails to accommodate seamless steel pipes of different lengths and diameters, covering common industrial pipe specifications. The pressure sensor is linked with the PLC control system, which can preset the pressure value and holding time, and automatically record the pressure-deformation curve, reducing manual intervention. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of a pressure resistance testing device for seamless steel pipes according to the present invention;

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the bidirectional pressure assembly;

[0019] Figure 3 A schematic diagram of the three-dimensional structure of the pressure application component;

[0020] Figure 4 This is a cross-sectional view of a pressure resistance testing device for seamless steel pipes according to this utility model;

[0021] The reference numerals in the accompanying drawings of the instruction manual include: 1. Base; 2. Support plate; 3. Pressure application assembly; 31. Pressure application telescopic rod; 32. Pressure application mounting plate; 33. Upper clamping block; 34. Lower clamping block; 35. Fixing plate; 36. Slider; 4. Bidirectional pressure assembly; 41. Bidirectional telescopic rod; 42. Upper mounting plate; 43. Bidirectional upper clamping block; 44. Bidirectional lower clamping block; 45. Lower mounting plate; 46. Bidirectional lower telescopic rod; 5. Motor; 6. Suction cup; 7. Slide rail; 8. Fixing block; 9. Telescopic hole. Detailed Implementation

[0022] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0023] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0024] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0025] In the description of this utility model, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating the connection relationship between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Example 1:

[0027] like Figure 1-4As shown, this utility model discloses a pressure resistance testing device for seamless steel pipes, including a base 1, support plates 2 on both sides of the base 1, a motor 5 on one side of the support plate 2, a suction cup 6 on the output shaft of the motor 5, a pressure application component 3 on the other side of the support plate 2, a bidirectional pressure component 4 on one side of the pressure application component 3, a fixing block 8 on the base 1, a slide rail 7 on the fixing block 8, and a bidirectional pressure component 4 including an upper mounting plate 42 connected to the base 1, a bidirectional telescopic rod 41 on the upper mounting plate 42, a bidirectional upper clamping block 43 on the lower side of the bidirectional telescopic rod 41, a bidirectional lower clamping block 44 on the lower side of the bidirectional upper clamping block 43, a lower mounting plate 45 on the lower side of the bidirectional lower clamping block 44, a bidirectional lower telescopic rod 46 on the lower side of the lower mounting plate 45, and a telescopic hole 9 on the base 1 through which the bidirectional lower telescopic rod 46 passes. Specifically, the motor-driven suction cup rotates the steel pipe (0-360° adjustable), and combined with the positioning function of the V-shaped clamping block, the full circumference of the steel pipe can be inspected without manual flipping, shortening the inspection time per pipe and improving efficiency.

[0028] The pressure application assembly 3 includes a slider 36 connected to a slide rail. A fixing plate 35 is mounted on the slider 36, and a lower clamping block 34 is mounted on the fixing plate 35. An upper clamping block 33 is mounted on the upper side of the lower clamping block 34. The clamping block 33 is fixedly connected to the pressure application telescopic rod 31, and a pressure application mounting plate 32 is mounted on the lower side of the pressure application telescopic rod 31. Specifically, the two sets of axially distributed pressure application units enable multi-point vertical pressure application to the steel pipe in the radial direction, thus increasing the coverage of pressure detection points.

[0029] The pressure mounting plate 32 is fixedly connected to the fixing plate 35, the slider 36 is bolted to the fixing plate 35, and both the lower clamping block 34 and the upper clamping block 33 are V-shaped structures. Specifically, the V-shaped clamping block fits tightly against the outer circle of the steel pipe.

[0030] The lower mounting plate 45 is fixedly connected to the base 1, the upper mounting plate 42 is fixedly connected to the base 1, and the upper mounting plate 42 is bolted to the bidirectional telescopic rod 41.

[0031] Both the bidirectional lower clamping block 44 and the bidirectional upper clamping block 43 are V-shaped structures. The bidirectional upper clamping block 43 has a built-in pressure sensor, which is electrically connected to the PLC control system. Specifically, the V-shaped clamping block fits tightly against the outer circumference of the steel pipe, and the pressure sensor provides real-time feedback on the clamping force to avoid detection deviations caused by slippage.

[0032] The support plate 2 has through holes, and the left support plate 2 has stepped through holes. The upper clamping block 33 has a built-in pressure sensor, and the pressure mounting plate 32 has a U-shaped structure. Specifically, the pressure sensor provides real-time feedback on the clamping force to avoid detection deviations caused by slippage.

[0033] Operating principle: The seamless steel pipe to be tested is passed through the stepped through holes 21 of the support plate 2 at both ends. The motor 5 drives the rotating shaft 22 to finely adjust the position of the steel pipe. The pneumatic suction cup 6 is used to absorb air from both ends of the steel pipe to achieve axial positioning.

[0034] The initial pressure of the pressure application component 3 is set to 8kN via the PLC control system; the upper and lower pressure difference of the bidirectional pressure component 4 is +5kN, with the upper clamping block 43 applying 10kN and the lower clamping block 44 applying 5kN; the rotation angle interval is 30°, and the pressure is maintained for 10 seconds at each angle. When the device is activated, the pressure application telescopic rod 31 extends vertically downwards, clamping the steel pipe between the upper clamping block 33 and the lower clamping block 34; the bidirectional upper telescopic rod 41 and the bidirectional lower telescopic rod 46 move synchronously, forming a 5kN pressure difference; the pressure sensor 10 provides real-time feedback of the pressure value, and the PLC records the data; the motor 5 drives the steel pipe to rotate once every 30°, repeating the detection until a 360° full circumference detection is completed.

[0035] After the test is completed, the system automatically generates a pressure-angle curve, marks the maximum pressure bearing value and the critical pressure difference value, and determines whether the pressure resistance performance of the steel pipe meets the standard.

[0036] The above are merely embodiments of this utility model. The circuits, electronic components, and modules involved are all prior art, fully achievable by those skilled in the art, and require no further explanation. The content protected by this application does not involve improvements to the software and methods. Commonly known structures and characteristics in the solution are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field to which this utility model pertains prior to the application date or priority date, are able to access all existing technologies in that field, and possess the ability to apply conventional experimental methods prior to that date. Those skilled in the art can, under the guidance of this application, improve and implement this solution in conjunction with their own capabilities. Some typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent.

Claims

1. A pressure resistance testing device for seamless steel pipes, characterized in that: The system includes a base (1), on which support plates (2) are provided on both sides. A motor (5) is provided on one side of the support plate (2), and a suction cup (6) is provided on the output shaft of the motor (5). A pressure component (3) is provided on the other side of the support plate (2), and a bidirectional pressure component (4) is provided on one side of the pressure component (3). A fixing block (8) is provided on the base (1), and a slide rail (7) is provided on the fixing block (8). The bidirectional pressure component (4) includes an upper mounting plate (42) connected to the base (1). A bidirectional telescopic rod (41) is provided on the upper mounting plate (42). A bidirectional upper clamping block (43) is provided on the lower side of the bidirectional telescopic rod (41). A bidirectional lower clamping block (44) is provided on the lower side of the bidirectional upper clamping block (43). A lower mounting plate (45) is provided on the lower side of the bidirectional lower clamping block (44). A bidirectional lower telescopic rod (46) is provided on the lower side of the lower mounting plate (45). A telescopic hole (9) is provided on the base (1), and the bidirectional lower telescopic rod (46) passes through the telescopic hole (9).

2. A pressure detection device for seamless steel pipes according to claim 1, characterized in that: The pressure application component (3) includes a slider (36) connected to the slide rail. A fixing plate (35) is provided on the slider (36). A lower clamping block (34) is provided on the fixing plate (35). An upper clamping block (33) is provided on the upper side of the lower clamping block (34). The clamping block (33) is fixedly connected to the pressure application telescopic rod (31). A pressure application mounting plate (32) is provided on the lower side of the pressure application telescopic rod (31).

3. A pressure detection device for seamless steel pipes according to claim 2, wherein: The pressure mounting plate (32) is fixedly connected to the fixing plate (35), the slider (36) is bolted to the fixing plate (35), and the lower clamping block (34) and the upper clamping block (33) are both V-shaped structures with a polyurethane anti-slip layer covering the surface.

4. The pressure detection device for seamless steel pipe according to claim 1, wherein: The lower mounting plate (45) is fixedly connected to the base (1), the upper mounting plate (42) is fixedly connected to the base (1), and the upper mounting plate (42) is bolted to the bidirectional telescopic rod (41).

5. The pressure detection device for seamless steel pipe according to claim 1, wherein: Both the bidirectional lower clamping block (44) and the bidirectional upper clamping block (43) are V-shaped structures with a polyurethane anti-slip layer covering their surfaces.

6. The pressure detection device for seamless steel pipe according to claim 1, wherein: The bidirectional upper clamping block (43) has a built-in pressure sensor, which is electrically connected to the PLC control system.

7. The pressure detection device for seamless steel pipe according to claim 1, wherein: The support plate (2) is provided with through holes, and the left support plate (2) is provided with stepped through holes.

8. The pressure detection device for seamless steel pipe according to claim 2, wherein: The upper clamping block (33) has a built-in pressure sensor, and the pressure mounting plate (32) has a U-shaped structure.

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