A capillary stainless steel tube underwater testing device

Abstract

The utility model relates to test equipment technical field, and disclose a kind of capillary stainless steel pipe underwater test equipment, the equipment includes rack, and the rack is provided with test assembly.This equipment is driven to move frame transverse movement by setting test assembly, cooperation asynchronous motor, two-way screw rod, guide rail and threaded block, so that two groups of connecting seat and conical cover mutually close movement, two groups of rubber layer are tightly connected with capillary stainless steel pipe body two end inside, can adapt to more inner diameter's capillary stainless steel pipe body, carry out stable clamping and fix, start suction integrated pump, cooperation three-head water pipe and three-way valve, inject water body to capillary stainless steel pipe body inside, after water injection, start air pump, cooperation three-head air pipe and three-way valve inject gas to capillary stainless steel pipe body inside, observe whether there is water body from capillary stainless steel pipe body seep, there is no seepage phenomenon, then current capillary stainless steel pipe body is no crack for good product, otherwise for defective product, in turn can improve test efficiency.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, specifically to an underwater testing device for capillary stainless steel tubes. Background Technology

[0002] Due to their excellent corrosion resistance, high temperature resistance, and good fluid conductivity, capillary stainless steel tubes are widely used in high-end manufacturing fields such as aerospace, precision electronics, and biomedicine. These applications have extremely high requirements for the sealing performance of capillary stainless steel tubes. If there are defects such as micro-cracks or pinholes in the tube body, it is very easy to cause fluid leakage, leading to equipment failure, product scrapping, or even safety accidents.

[0003] Therefore, after the production and processing of capillary stainless steel tubes, conducting a sealing test is a key step in ensuring product quality and the reliability of subsequent applications. Underwater testing equipment for capillary stainless steel tubes has emerged to address this need. The traditional testing method involves sealing both ends of the tube and placing it underwater to see if any bubbles emerge. This method is time-consuming and labor-intensive.

[0004] Currently, existing capillary stainless steel tube sealing testing equipment still has certain shortcomings. On the one hand, the clamping mechanism of existing equipment has poor adaptability, usually only able to fix capillary stainless steel tubes with specific inner diameter specifications. For tubes with different inner diameters, it is necessary to frequently change clamping accessories, which is cumbersome and significantly reduces testing efficiency. On the other hand, most equipment relies on manual visual inspection to determine the quality of the product, which is prone to misjudgment due to factors such as observation fatigue and lighting conditions, making it difficult to guarantee detection accuracy. In addition, some equipment does not have an effective water diversion and recovery structure, and the water that seeps out during the test can easily cause corrosion damage to the core transmission components of the equipment. At the same time, it cannot achieve automated judgment of test results, further limiting the practicality and testing efficiency of the equipment. In view of this, we propose an underwater testing equipment for capillary stainless steel tubes. Utility Model Content

[0005] The purpose of this invention is to provide an underwater testing device for capillary stainless steel tubes to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: An underwater testing device for capillary stainless steel tubes includes a frame on which a capillary stainless steel tube body is mounted. The frame also includes a testing assembly comprising: An asynchronous motor is fixedly mounted on the frame. A bidirectional lead screw is fixedly mounted on the output end of the asynchronous motor via a coupling. The bidirectional lead screw is rotatably mounted inside the frame via bearing components. A threaded block is threaded onto the bidirectional lead screw. A movable frame is fixedly mounted on the top of the threaded block. The movable frame is fixedly mounted on a sliding component of a guide rail. The guide rail is fixedly mounted on the frame. A connecting seat is fixedly mounted on the top of the movable frame. A conical cover is fixedly mounted on the connecting seat. The conical cover is covered with a rubber layer. Two sets of the movable frame, guide rail, conical cover, rubber layer, and connecting seat are provided. A suction pump is fixedly installed on the top of one set of the movable frames. A three-head water pipe is fixedly installed between the suction pump and the corresponding connecting seat. An air pump is fixedly installed on another set of the movable frames. A three-head air pipe is fixedly installed between the air pump and the corresponding connecting seat. A three-way valve is provided on both the three-head water pipe and the three-head air pipe.

[0007] In a further embodiment, both sets of the movable frame, guide rail, conical cover, rubber layer and connecting seat are mirrored at both ends of the bidirectional lead screw with the vertical centerline of the bidirectional lead screw as the mirror axis, for stable clamping and fixing.

[0008] In a further embodiment, the two sets of rubber layers are bonded to the inside of both ends of the capillary stainless steel tube body, resulting in a tight fit and better sealing.

[0009] In a further embodiment, the end of the integrated suction pump away from the three-head water pipe is connected to a water supply device via a hose, and the end of the three-head water pipe away from the integrated suction pump is connected to a wastewater recycling device via a hose.

[0010] In a further embodiment, the top opening of the three-headed trachea faces upwards.

[0011] In a further embodiment, the frame is also equipped with an auxiliary component, which includes an arc-shaped plate. The arc-shaped plate is fixedly installed on the frame and is located directly below the capillary stainless steel tube body and directly above the bidirectional lead screw. The arc-shaped plate passes through the moving frame to avoid motion interference.

[0012] In a further embodiment, an electronic scale is installed at the bottom of the frame, and a water collection cover is attached to the top of the electronic scale. The water collection cover is located directly below the arc-shaped plate, which can improve testing accuracy and efficiency.

[0013] Compared with the prior art, this utility model provides an underwater testing device for capillary stainless steel tubes, which has the following beneficial effects: 1. This underwater testing equipment for capillary stainless steel tubes, in order to improve testing efficiency, is equipped with testing components. When the asynchronous motor on the frame is started, the bidirectional lead screw rotates. Under the limit of the guide rail, the threaded block drives the moving frame to move laterally, causing the two sets of connecting seats and conical covers to move closer to each other. The two sets of rubber layers press against the inside of both ends of the capillary stainless steel tube body, thus accommodating capillary stainless steel tube bodies with a wider range of inner diameters and providing stable clamping and fixation. When the integrated suction pump is started, water is injected into the capillary stainless steel tube body in conjunction with the three-head water pipe and three-way valve. After the water injection is completed, the air pump is started, and air is injected into the capillary stainless steel tube body in conjunction with the three-head air pipe and three-way valve. It is observed whether water seeps out of the capillary stainless steel tube body. If there is no seepage, the current capillary stainless steel tube body is free of cracks and is a good product; otherwise, it is a defective product. This improves testing efficiency. At the same time, the bidirectional lead screw is tilted, causing the capillary stainless steel tube body to tilt towards the integrated suction pump, which is beneficial for water injection and discharge.

[0014] 2. To improve the practicality of this capillary stainless steel tube underwater testing equipment, an auxiliary component is installed. When water seeps out from inside the capillary stainless steel tube, it drips onto the arc-shaped outer wall of the arc plate. This protects the bidirectional lead screw and guides the water into the water collection hood, causing the electronic scale reading to change in a timely manner. This avoids visual observation, enables automatic testing, improves testing accuracy and efficiency, and makes the equipment more practical. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall structure of the present invention from another perspective; Figure 3 This utility model Figure 2 Enlarged structural diagram of region A in the middle; Figure 4 This is a schematic cross-sectional view of part of the structure of this utility model. Figure 1 ; Figure 5 This is a schematic cross-sectional view of part of the structure of this utility model. Figure 2 ; Figure 6 This is a schematic cross-sectional view of part of the structure of this utility model. Figure 3 ; Figure 7 This is a schematic diagram of the conical cover and rubber layer of this utility model.

[0016] Explanation of icon numbers: 1. Frame; 2. Capillary stainless steel tube body; 3. Test components; 31. Asynchronous motor; 32. Two-way lead screw; 33. Threaded block; 34. Moving frame; 35. Guide rail; 36. Conical cover; 37. Rubber layer; 38. Connecting seat; 39. Suction pump; 310. Three-way water pipe; 311. Air pump; 312. Three-way air pipe; 313. Three-way valve; 4. Auxiliary components; 41. Curved plate; 42. Electronic scale; 43. Water collection cover. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] In this application, the term "above" indicates the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is primarily used to better describe this application and its embodiments, and is not intended to limit the indicated device, element, or component to having a specific orientation, or to construct and operate in a specific orientation. Furthermore, the term "above" may also be used in certain circumstances to indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances.

[0019] Please see Figures 1-7 This utility model provides a technical solution: An underwater testing device for capillary stainless steel tubes includes a frame 1, on which a capillary stainless steel tube body 2 is mounted.

[0020] In one embodiment of this utility model, the frame 1 is further provided with a test assembly 3, which includes an asynchronous motor 31. The asynchronous motor 31 is fixedly mounted on the frame 1. A bidirectional lead screw 32 is fixedly mounted on the output end of the asynchronous motor 31 through a coupling. The bidirectional lead screw 32 is rotatably mounted inside the frame 1 through bearing components. A threaded block 33 is threaded onto the bidirectional lead screw 32. A movable frame 34 is fixedly mounted on the top of the threaded block 33. The movable frame 34 is fixedly mounted on the sliding component of the guide rail 35. The guide rail 35 is fixedly mounted on the frame 1. A connecting seat 38 is fixedly mounted on the top of the movable frame 34. A conical cover 36 is fixedly mounted on the connecting seat 38. The conical cover 36 is covered with a rubber layer 37. Two sets of movable frames 34, guide rails 35, conical covers 36, rubber layers 37, and connecting seats 38 are provided. In addition, two sets of movable frames 34, guide rails 35, conical covers 36, rubber layers 37, and connecting seats 38 are provided. Each seat 38 is mirrored at both ends of the bidirectional lead screw 32, with the vertical centerline of the lead screw 32 as the mirror axis, for stable clamping and fixation. In addition, two sets of rubber layers 37 are attached to the inside of both ends of the capillary stainless steel tube body 2, with a tight fit and better sealing. The suction pump 39 is fixedly installed on the top of a set of movable frames 34. A three-head water pipe 310 is fixedly installed between the suction pump 39 and the corresponding connecting seat 38. An air pump 311 is fixedly installed on another set of movable frames 34. A three-head air pipe 312 is fixedly installed between the air pump 311 and the corresponding connecting seat 38. A three-way valve 313 is provided on both the three-head water pipe 310 and the three-head air pipe 312. In addition, the end of the suction pump 39 away from the three-head water pipe 310 is connected to the water supply equipment through a hose, and the end of the three-head water pipe 310 away from the suction pump 39 is connected to the wastewater recovery equipment through a hose. In addition, the top opening of the three-head air pipe 312 faces upward.

[0021] In one embodiment of this utility model, an auxiliary component 4 is also provided on the frame 1. The auxiliary component 4 includes an arc plate 41, which is fixedly installed on the frame 1. The arc plate 41 is located directly below the capillary stainless steel tube body 2 and directly above the bidirectional lead screw 32. The arc plate 41 passes through the movable frame 34 to avoid motion interference. In addition, an electronic scale 42 is provided at the bottom of the frame 1. A water collection cover 43 is snapped onto the top of the electronic scale 42. The water collection cover 43 is located directly below the arc plate 41, which can improve the testing accuracy and testing efficiency.

[0022] Working principle: Before the test starts, the capillary stainless steel tube body 2 to be tested is loaded and positioned. The capillary stainless steel tube body 2 is placed in the preset clamping position between the two sets of conical covers 36 to ensure that the subsequent clamping action can be aligned with both ends of the tube body. Then, the asynchronous motor 31 is started, and its output end drives the bidirectional lead screw 32 to rotate synchronously through the coupling. Under the guiding and limiting action of the guide rail 35, the threaded block 33 cannot rotate synchronously with the bidirectional lead screw 32, but instead moves laterally along the axis of the bidirectional lead screw 32, thereby driving the moving frame 34, which is fixedly connected to the threaded block 33, to move along the guide rail. 35 Sliding, during the rotation of the bidirectional screw 32, the two sets of moving frames 34 will move towards the middle synchronously, driving the two sets of connecting seats 38 and the conical cover 36 installed on the connecting seats 38 to approach each other until the two sets of rubber layers 37 are completely embedded and pressed against the inside of both ends of the capillary stainless steel tube body 2; the rubber layer 37 has elastic deformation capability, so it can adapt to capillary stainless steel tube bodies 2 with different inner diameter specifications, and at the same time, it achieves the sealing clamping of both ends of the tube body through elastic compression, completing the stable fixation of the capillary stainless steel tube body 2, and providing sealing guarantee for subsequent water injection and air inflation tests.

[0023] After the capillary stainless steel tube body 2 is clamped and fixed, the test pipeline is switched and adjusted to meet the water injection test requirements: the three-way valve 313 on the three-head water pipe 310 is controlled by the controller to open the pipeline channel connecting the water supply equipment in the three-way valve 313 near the suction integrated pump 39, and at the same time close the pipeline channel connecting the wastewater recovery equipment in the three-way valve 313; simultaneously, another set of three-way valves 313 (away from the suction integrated pump 39 and close to the air pump 311) is controlled to open the pipeline channel connecting the three-way valve 313 to the outside (the top opening of this pipeline faces upwards, used to expel air from the tube during the water injection process). The pipeline channel connected to the air pump 311 in the three-way valve 313 is closed to ensure that the water injection pipeline forms a unique connection path. After the pipeline switching is completed, the suction pump 39 is started. After the suction pump 39 is running, it draws test water from the water supply equipment through the hose. The water is pressurized by the suction pump 39 and delivered to the three-head water pipe 310, and then enters the capillary stainless steel tube body 2 through the three-way valve 313 which has been switched to the connected state. During the water injection process, the air in the capillary stainless steel tube body 2 will be discharged through the external connecting pipeline with the top opening facing upward, until the water completely fills the inside of the capillary stainless steel tube body 2, and the water injection process is completed.

[0024] After water injection, switch the pipeline: close the pipeline connecting to the water supply equipment and the pipeline connecting to the wastewater recovery equipment, open the three-way valve 313 near the air pump 311 connecting to the capillary stainless steel tube body 2, close the three-way valve 313 connecting to the outside, start the air pump 311, the air pump 311 injects gas into the capillary stainless steel tube body 2 through the three-head air pipe 312 and the three-way valve 313 to detect whether there is water leakage in the capillary stainless steel tube body 2. During the air inflation test, the auxiliary component 4 simultaneously plays a role in detection assistance and automatic judgment: since the arc plate 41 is fixedly installed on the frame 1 and is located directly below the capillary stainless steel tube body 2 and directly above the bidirectional screw 32, if there is a water leakage defect in the capillary stainless steel tube body 2, the leaked water will be detected. The water will drip directly onto the arc-shaped outer wall of the arc-shaped plate 41. The arc-shaped structure of the arc-shaped plate 41 can prevent water from dripping directly onto the bidirectional lead screw 32 and causing corrosion of the components. On the other hand, it can use gravity to guide the water to flow downward along the arc-shaped surface, realizing the diversion of the water. The diverted water will eventually fall into the water collection hood 43 located directly below the arc-shaped plate 41. The water collection hood 43 is snapped onto the top of the electronic scale 42, and the detection value of the electronic scale 42 will change in real time. After receiving the value change signal of the electronic scale 42, the controller can automatically determine that the current capillary stainless steel tube body 2 is defective. If the value of the electronic scale 42 remains stable and unchanged throughout the entire inflation test, it indicates that there is no leakage of the capillary stainless steel tube body 2, and its sealing performance meets the requirements. The controller automatically determines that the capillary stainless steel tube body 2 is of good quality, eliminating the need for continuous manual observation and automating the test result determination, thus improving testing efficiency. After the sealing test of a single capillary stainless steel tube body 2 is completed, the test enters the final stage. First, the pipeline is switched to meet the drainage requirements: the three-way valve 313, which is away from the integrated suction pump 39, is adjusted to open its connection pipeline to the outside and close its connection pipeline to the air pump 311; at the same time, the three-way valve 313, which is close to the integrated suction pump 39, is adjusted to close its connection pipeline to the water supply equipment and open its connection pipeline to the wastewater recovery equipment, so that the capillary stainless steel tube body 2, the three-head water pipe 310 and the wastewater recovery equipment are connected. Then, the integrated suction pump is restarted. Pump 39, the integrated suction pump 39, rotates in reverse to generate suction, drawing out the test water remaining inside the capillary stainless steel tube body 2. The drawn water is transported to the wastewater recycling equipment for centralized treatment via a three-way water pipe 310, a three-way valve 313, and a hose to avoid water residue affecting subsequent tests. After drainage is completed, the controller issues a command to shut down all electrical components (including asynchronous motor 31, integrated suction pump 39, air pump 311, and electronic scale 42), and simultaneously controls asynchronous motor 31 to rotate in reverse, driving bidirectional lead screw 32 to rotate in reverse, causing the two sets of moving frames 34 to separate to both sides, so that the rubber layer 37 detaches from both ends of the capillary stainless steel tube body 2, releasing the clamp on the tube body. Finally, the capillary stainless steel tube body 2, which has been tested, is taken out, completing the entire testing process.

[0025] All electrical components appearing in this application are electrically connected to the controller and 220V AC mains power. The controller is a conventional and known device capable of controlling the asynchronous motor 31, the suction pump 39, the air pump 311, and the electronic scale 42. The signal interaction between the components adopts the PLC control protocol commonly used in industrial equipment, which is common knowledge to those skilled in the art and can be implemented without further detailed description. The control logic and signal interaction method are existing technologies and will not be elaborated further. All standard parts used in this application can be purchased from the market. The specific connection methods of each part are all conventional methods such as riveting and welding, which are mature technologies in the prior art. The standard parts are all conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0026] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. An underwater testing device for capillary stainless steel tubes, comprising a frame (1), wherein a capillary stainless steel tube body (2) is disposed on the frame (1), characterized in that: The rack (1) is also provided with a test assembly (3), which includes: An asynchronous motor (31) is fixedly installed on the frame (1). A bidirectional lead screw (32) is fixedly installed at the output end of the asynchronous motor (31) through a coupling. The bidirectional lead screw (32) is rotatably installed inside the frame (1) through bearing components. A threaded block (33) is threaded on the bidirectional lead screw (32). A movable frame (34) is fixedly installed on the top of the threaded block (33). The movable frame (34) is fixedly installed on the sliding component of the guide rail (35). The guide rail (35) is fixedly installed on the frame (1). A connecting seat (38) is fixedly installed on the top of the movable frame (34). A conical cover (36) is fixedly installed on the connecting seat (38). The conical cover (36) is covered with a rubber layer (37). Two sets of movable frame (34), guide rail (35), conical cover (36), rubber layer (37) and connecting seat (38) are provided. A suction pump (39) is fixedly installed on the top of a set of the movable frames (34). A three-head water pipe (310) is fixedly installed between the suction pump (39) and the corresponding connecting seat (38). An air pump (311) is fixedly installed on another set of the movable frames (34). A three-head air pipe (312) is fixedly installed between the air pump (311) and the corresponding connecting seat (38). A three-way valve (313) is provided on both the three-head water pipe (310) and the three-head air pipe (312).

2. The underwater testing equipment for capillary stainless steel tubes according to claim 1, characterized in that: Both sets of the movable frame (34), guide rail (35), conical cover (36), rubber layer (37) and connecting seat (38) are mirrored at both ends of the bidirectional lead screw (32) with the vertical center line of the bidirectional lead screw (32) as the mirror axis.

3. The underwater testing equipment for capillary stainless steel tubes according to claim 1, characterized in that: The two sets of rubber layers (37) are attached to the inside of both ends of the capillary stainless steel tube body (2).

4. The underwater testing equipment for capillary stainless steel tubes according to claim 1, characterized in that: The end of the integrated suction pump (39) away from the three-head water pipe (310) is connected to the water supply equipment via a hose, and the end of the three-head water pipe (310) away from the integrated suction pump (39) is connected to the wastewater recycling equipment via a hose.

5. The underwater testing equipment for capillary stainless steel tubes according to claim 1, characterized in that: The top opening of the three-headed trachea (312) faces upward.

6. The underwater testing equipment for capillary stainless steel tubes according to claim 1, characterized in that: The frame (1) is also provided with an auxiliary component (4), which includes an arc plate (41). The arc plate (41) is fixedly installed on the frame (1). The arc plate (41) is located directly below the capillary stainless steel tube body (2) and directly above the bidirectional lead screw (32). The arc plate (41) passes through the moving frame (34).

7. The underwater testing equipment for capillary stainless steel tubes according to claim 6, characterized in that: An electronic scale (42) is installed at the bottom of the frame (1), and a water collection cover (43) is attached to the top of the electronic scale (42). The water collection cover (43) is located directly below the arc plate (41).

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