An underwater testing device for stainless steel pipes

Abstract

This utility model discloses an underwater testing device for stainless steel pipes, including a water tank with an upward-opening water storage cavity. A lifting frame is slidably connected to the water storage cavity. A lifting control component for controlling the lifting of the lifting frame is provided in the water storage cavity. An airtightness detection component and several steel pipe clamping components are provided on the lifting frame. The steel pipe clamping components include a base plate with an mounting plate. A control block inserted into the base plate is fixed on the lower side of the mounting plate. After the steel pipe test is completed, the mounting plate in the steel pipe clamping components can cause the steel pipe to jump up and down to shake off excess water on the steel pipe, preventing water droplets from contaminating the working environment after unloading. The ventilation plate, clamping plate, and steel pipe clamping components in this utility model can all be adjusted left and right to adapt to steel pipes of different lengths, thus improving the applicability of this utility model.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe production technology, and in particular to an underwater testing device for stainless steel pipes. Background Technology

[0002] After steel pipes are manufactured, leak testing is required to ensure safe use and guarantee project quality and reliability. Current leak testing methods generally include air pressure testing and water pressure testing.

[0003] The immersion test is a specific implementation of the above-mentioned air pressure test. This method involves filling the pipe with compressed air, then immersing the pipe in a water tank and observing whether bubbles emerge to determine the leak point. It is an intuitive and commonly used leak detection method. However, after using this method to detect leaks, a certain amount of water will adhere to the surface of the steel pipe. This makes it easy for the steel pipe to drip water during subsequent transportation, polluting the working environment. It also requires frequent replenishment of water in the water tank, which is inconvenient. Therefore, an improvement is needed. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an underwater testing device for stainless steel pipes, thereby solving the problems mentioned in the background section.

[0005] This utility model provides the following technical solution: an underwater testing device for stainless steel pipes, including a water tank, a water storage cavity with an upward opening for storing water in the water tank, a lifting frame slidably connected in the water storage cavity, a lifting control component for controlling the lifting of the lifting frame in the water storage cavity, and an airtightness detection component and several steel pipe clamping components on the lifting frame.

[0006] The steel pipe clamping assembly includes a base plate, an mounting plate on the base plate, a control block inserted into the base plate fixed on the lower side of the mounting plate, a bearing plate on the mounting plate, a triangular groove on the upper side of the bearing plate, a locking cylinder with its tail abutting and arranged in the front-rear direction on the mounting plate, a vertically extending connecting plate on the end of the piston rod of the locking cylinder, and a pressure plate on the upper end of the connecting plate.

[0007] The steel pipe clamping assembly also includes a vibrating pipe cylinder fixed to the lower side of the first base plate, and the second piston rod inside the vibrating pipe cylinder is connected to the control block.

[0008] Preferably, the two pressure plates in one of the steel pipe clamping assemblies are arranged facing each other, and the sides of the two pressure plates that are close to each other are chamfered with their lower sides.

[0009] Preferably, one of the steel pipe clamping assemblies is provided with two bearing plates, and the two bearing plates are respectively located on the left and right sides of the locking cylinder.

[0010] Preferably, the airtightness testing component includes a second base plate mounted on the lifting frame and distributed on the left and right sides. A vertical plate is fixed on the second base plate. A vent plate and a clamping plate are respectively mounted on the left and right vertical plates. The vent plate and the clamping plate are slidably connected to the vertical plates by sliding rods. A push-pull cylinder is provided on the vertical plate. The third piston rod in the left and right push-pull cylinders is respectively connected to the vent plate and the clamping plate.

[0011] The vent plate is equipped with an air pipe connected to the air injection hole inside the vent plate.

[0012] Preferably, the lifting frame includes front and rear horizontal bars and left and right connecting bars, the horizontal bars and the connecting bars are connected to each other and end to end, the first base plate and the second base plate are both T-shaped in the lateral direction so as to simultaneously attach to the upper side of the horizontal bar and a vertical side, and also includes a locking component for locking the position of the first base plate and the second base plate relative to the connecting bars.

[0013] Preferably, the locking assembly includes two locking plates, which are respectively connected to the upper sides of the front and rear crossbars by multiple bolts, and clamp the first base plate and the second base plate between the locking plates and the crossbars.

[0014] Preferably, the lifting control assembly includes two lifting cylinders fixed inside the water storage chamber and distributed on the left and right sides, with the fourth piston rods inside the left and right lifting cylinders respectively connected to the bottom of the left and right connecting rods.

[0015] Preferably, friction textures are machined on the sides of the crossbar that contact the first base plate and the second base plate.

[0016] This utility model provides an underwater testing device for stainless steel pipes, which has the following beneficial effects:

[0017] After the steel pipe test is completed, the mounting plate inside the steel pipe clamping assembly of this utility model can cause the steel pipe to jump up and down to shake off excess water on the steel pipe and prevent water droplets from the steel pipe after unloading from polluting the working environment.

[0018] The ventilation plate, clamping plate, and steel pipe clamping assembly in this invention can all be adjusted to the left and right to adapt to steel pipes of different lengths, thereby improving the applicability of this invention. Attached Figure Description

[0019] Figure 1This is a schematic diagram of the appearance of this utility model;

[0020] Figure 2 This is a schematic diagram of the appearance of the lifting frame in this utility model;

[0021] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 yes Figure 2 A schematic diagram of the left-side structure inside the No. 1 base plate.

[0023] In the picture:

[0024] 11. Water tank; 12. Water storage chamber; 13. Lifting frame; 21. Base plate No. 1; 22. Mounting plate; 23. Control block; 24. Bearing plate; 25. Triangular groove; 26. Locking cylinder; 27. Pressure plate; 28. Cylinder; 31. Base plate No. 2; 32. Vertical plate; 33. Vent plate; 34. Clamping plate; 35. Push-pull cylinder; 41. Locking plate. Detailed Implementation

[0025] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this 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, they should not be construed as limitations on this utility model.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] Reference Figures 1-4 According to an embodiment of the stainless steel pipe underwater testing equipment of the present invention, it includes a water tank 11, a water storage cavity 12 with an upward opening for storing water is provided in the water tank 11, a lifting frame 13 is slidably connected in the water storage cavity 12, a lifting control component for controlling the lifting frame 13 to lift in the water storage cavity 12, and an airtightness detection component and several steel pipe clamping components are provided on the lifting frame 13.

[0030] In this embodiment, the steel pipe clamping assembly includes a base plate 21, on which a mounting plate 22 is provided, and a control block 23 inserted into the base plate 21 is fixed on the lower side of the mounting plate 22. A bearing plate 24 is provided on the mounting plate 22, and a triangular groove 25 is provided on the upper side of the bearing plate 24. A locking cylinder 26 with its tail abutting and arranged in the front-rear direction is also provided on the mounting plate 22. A vertically extending connecting plate is mounted on the piston rod of the locking cylinder 26, and a pressure plate 27 is mounted on the upper end of the connecting plate. Two pressure plates 27 in one steel pipe clamping assembly are arranged facing each other, and the sides of the two pressure plates 27 that are close to each other and their lower sides are chamfered.

[0031] In order to ensure stable clamping of the steel pipe, two bearing plates 24 are provided in one of the steel pipe clamping assemblies, and the two bearing plates 24 are respectively located on the left and right sides of the locking cylinder 26.

[0032] In addition, the steel pipe clamping assembly also includes a vibrating pipe cylinder 28 fixed to the lower side of the first base plate 21, and the second piston rod inside the vibrating pipe cylinder 28 is connected to the control block 23.

[0033] The connecting plate and the pressure plate 27 can approach each other under the control of the locking cylinder 26, thereby pressing and locking the steel pipe mounted in the triangular groove 25 through the pressure plate 27. In addition, the function of the vibrating cylinder 28 is to make the mounting plate 22 vibrate up and down. When the lifting frame 13 is at the uppermost side and the airtightness detection component is not in contact with the steel pipe, the up and down vibration of the mounting plate 22 can shake off the liquid on the surface of the steel pipe on the bearing plate 24, so as to prevent the steel pipe from dripping water during subsequent transportation.

[0034] The airtightness testing component includes a second base plate 31 mounted on the lifting frame 13 and distributed on the left and right sides. A vertical plate 32 is fixed on the second base plate 31. A vent plate 33 and a clamping plate 34 are respectively mounted on the left and right vertical plates 32. The vent plate 33 and the clamping plate 34 are slidably connected to the vertical plate 32 by sliding rods. A push-pull cylinder 35 is provided on the vertical plate 32. The third piston rod in the left and right push-pull cylinders 35 is respectively connected to the vent plate 33 and the clamping plate 34.

[0035] The vent plate 33 is equipped with an air pipe (not shown in the figure) connected to the air injection hole inside the vent plate 33, and the air pipe is connected to an air compressor or other pressurization device.

[0036] After the steel pipe is clamped by the steel pipe clamping assembly, the vent plate 33 and the clamping plate 34 can move closer to each other under the control of the push-pull cylinder 35 to connect to the left and right ends of the steel pipe. Specifically, the left end of the steel pipe is inserted into the air injection hole in the vent plate 33, and the right end of the steel pipe is inserted into the closed hole in the clamping plate 34. Both the air injection hole and the closed hole are equipped with sealing rings to prevent air leakage.

[0037] Alternatively, the steel pipe can be placed against the rubber plate on the side of the vent plate 33 and the clamping plate 34. The rubber plate on the vent plate 33 is provided with a vent hole that communicates with the air injection hole to facilitate ventilation.

[0038] Specific procedures for leak detection of steel pipes:

[0039] First, the steel pipe is placed in the triangular groove 25 in the bearing plate 24 in an automatic or manual manner. Then, the locking cylinder 26 operates to press the pressure plate 27 against the upper edge of the front and rear sides of the steel pipe to complete the locking of the steel pipe.

[0040] Then, the vent plate 33 and the clamping plate 34 move closer to each other to connect to the left and right ends of the steel pipe. Then, the lifting control component controls the lifting frame 13 to sink so that the steel pipe is submerged in the water in the water storage chamber 12. Then, an external air compressor or other pressurizing device pumps air into the steel pipe through the air pipe. After reaching the rated air pressure, the staff can observe whether air bubbles appear in the water storage chamber 12 and determine whether there are air holes in the steel pipe.

[0041] After the test is completed, the lifting frame 13 rises and the steel pipe floats out of the water. Then the ventilation plate 33 and the clamping plate 34 move away from each other and are no longer connected to the steel pipe. Then the vibrating cylinder 28 drives the mounting plate 22, the bearing plate 24 and the steel pipe on it to vibrate up and down to shake off excess water on the steel pipe and prevent water droplets from the steel pipe from contaminating the working environment after unloading.

[0042] In addition, a camera can be installed on the water tank 11 via a guide rail, and bubbles can be automatically identified through visual recognition to achieve automatic judgment.

[0043] The lifting frame 13 includes front and rear horizontal bars and left and right connecting rods. The horizontal bars and the connecting rods are connected to each other and end to end. In the second embodiment of the stainless steel pipe underwater testing equipment, the first base plate 21 and the second base plate 31 can be adjusted to the left and right. The first base plate 21 and the second base plate 31 are both T-shaped in the lateral direction so as to simultaneously attach to the upper side of the horizontal bar and a vertical side. It also includes a locking component for locking the position of the first base plate 21 and the second base plate 31 relative to the connecting rod.

[0044] The locking assembly includes two locking plates 41, which are connected to the upper sides of the front and rear crossbars respectively by multiple bolts, and clamp the first base plate 21 and the second base plate 31 between the locking plates 41 and the crossbars.

[0045] After unscrewing the bolts, the operator can remove the locking plate 41 and adjust the left and right positions of the first base plate 21 and the second base plate 31 to fit the length of the steel pipe to be tested. After the adjustment, the operator can reinstall the locking plate 41 and lock the left and right positions of the first base plate 21 and the second base plate 31.

[0046] Furthermore, in order to increase the friction between the first base plate 21 and the second base plate 31 and the lifting frame 13, friction textures are processed on the sides of the crossbar and the contact surfaces of the first base plate 21 and the second base plate 31 to further prevent slippage.

[0047] In addition, the lifting control assembly includes two lifting cylinders (not shown in the figure) fixed in the water storage chamber 12 and distributed on the left and right. The fourth piston rod in the left and right lifting cylinders is connected to the bottom of the left and right connecting rods respectively. The operator can control the lifting of the lifting frame 13 through the lifting cylinders. The bottom of the connecting rod is thickened to increase its strength.

[0048] The above description is only a specific embodiment of the present utility model, but the technical features of the present utility model are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present utility model are covered by the patent scope of the present utility model.

Claims

1. An underwater testing device for stainless steel pipes, comprising a water tank (11), wherein the water tank (11) has an upward-opening water storage cavity (12) for storing water, characterized in that: The water storage cavity (12) is slidably connected to the lifting frame (13) in the upper and lower parts. The water storage cavity (12) is provided with a lifting control component for controlling the lifting frame (13) to lift. The lifting frame (13) is provided with an airtightness detection component and several steel pipe clamping components. The steel pipe clamping assembly includes a base plate (21), on which a mounting plate (22) is provided, and a control block (23) inserted into the base plate (21) is fixed on the lower side of the mounting plate (22). A bearing plate (24) is provided on the mounting plate (22), and a triangular groove (25) is provided on the upper side of the bearing plate (24). A locking cylinder (26) with its tail abutting and arranged in the front-rear direction is also provided on the mounting plate (22). A vertically extending connecting plate is installed on the end of the piston rod of the locking cylinder (26), and a pressure plate (27) is installed on the upper end of the connecting plate. The steel pipe clamping assembly also includes a vibrating pipe cylinder (28) fixed to the lower side of the first base plate (21), and the second piston rod inside the vibrating pipe cylinder (28) is connected to the control block (23).

2. The underwater testing equipment for stainless steel pipes according to claim 1, characterized in that: Two pressure plates (27) within a steel pipe clamping assembly are arranged facing each other, and the sides of the two pressure plates (27) that are close to each other are chamfered with their lower sides.

3. The underwater testing equipment for stainless steel pipes according to claim 1, characterized in that: Two bearing plates (24) are provided in one of the steel pipe clamping assemblies, and the two bearing plates (24) are respectively located on the left and right sides of the locking cylinder (26).

4. The underwater testing equipment for stainless steel pipes according to claim 1, characterized in that: The airtightness testing component includes a second base plate (31) mounted on the lifting frame (13) and distributed on the left and right sides. A vertical plate (32) is fixed on the second base plate (31). A vent plate (33) and a clamping plate (34) are respectively mounted on the left and right vertical plates (32). The vent plate (33) and the clamping plate (34) are slidably connected to the vertical plate (32) by a sliding rod. A push-pull cylinder (35) is provided on the vertical plate (32). The third piston rod in the push-pull cylinder (35) is respectively connected to the vent plate (33) and the clamping plate (34). The vent plate (33) is equipped with an air pipe connected to the air injection hole inside the vent plate (33).

5. The underwater testing equipment for stainless steel pipes according to claim 4, characterized in that: The lifting frame (13) includes front and rear horizontal bars and left and right connecting bars. The horizontal bars and the connecting bars are connected to each other and end to end. The first base plate (21) and the second base plate (31) are both T-shaped in the lateral direction so as to simultaneously attach to the upper side of the horizontal bar and a vertical side. It also includes a locking component for locking the position of the first base plate (21) and the second base plate (31) relative to the connecting bars.

6. The underwater testing equipment for stainless steel pipes according to claim 5, characterized in that: The locking assembly includes two locking plates (41), and the two locking plates (41) are connected to the upper side of the front and rear crossbars respectively by multiple bolts, and the first base plate (21) and the second base plate (31) are clamped between the locking plates (41) and the crossbars.

7. The underwater testing equipment for stainless steel pipes according to claim 5, characterized in that: The lifting control assembly includes two lifting cylinders fixed in the water storage chamber (12) and distributed on the left and right sides, with the fourth piston rod in the left and right lifting cylinders respectively connected to the bottom of the connecting rod on the left and right sides.

8. The underwater testing equipment for stainless steel pipes according to claim 6, characterized in that: Friction patterns are machined on the sides of the crossbar that contact the first base plate (21) and the second base plate (31).

Images