Boiler pipe expanded connection pressure test device
By designing a boiler pipe expansion and connection pressure test device with support frame, telescopic and lifting mechanism, the problem of cumbersome pressure testing after boiler pipe expansion and connection in the prior art is solved, and efficient pressure testing of boiler pipes of different lengths and positions is realized, simplifying the operating process and improving the testing efficiency.
Patent Information
- Application Number
- CN202422516661.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-17
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-10-17
AI Technical Summary
The pressure test process after the expansion and connection of existing boiler pipes is cumbersome, especially for boiler pipes of different lengths and locations, making it difficult to conduct efficient pressure testing.
A boiler pipe expansion and pressure testing device including a support frame, a telescopic mechanism, a lifting mechanism and a pressure test mechanism is designed. Through the telescopic and lifting mechanism, the spacing and height of the support frame are adjusted, and combined with the plugging of the sealing seat and the water outlet seat, the effective sealing and pressurization test of boiler pipes of different lengths and positions is achieved.
It realizes efficient pressure testing after boiler pipe expansion of different lengths and positions, simplifies the operation process and improves testing efficiency and accuracy.
Smart Images
Figure CN223154469U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of boiler tube expansion connection, in particular to a boiler tube expansion connection pressure testing device. Background Technique
[0002] For the expansion connection of the boiler, specifically speaking, it is a connection method. First, clean the inner wall of the boiler tube sheet and the outer wall of the smoke tube, and leave a margin of 3 mm outside the tube sheet. Then, use an expansion tube tool to expand the outer mouth of the smoke tube against the inner wall of the tube sheet, so that they can be tightly combined together to achieve the purpose of connection.
[0003] After the expansion connection, it is necessary to conduct a pressure test on the boiler tubes to determine whether there is leakage in the boiler tubes. Usually, the method of injecting water and maintaining pressure for a certain period of time is used to determine the state of the boiler tubes. Due to the large number and different heights of the boiler tubes, the test is very troublesome. Therefore, we propose a boiler tube expansion connection pressure testing device. Content of the Utility Model
[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a boiler tube expansion connection pressure testing device. Through the pressure testing mechanism with high degrees of freedom, it is convenient to conduct pressure testing on the expanded boiler tubes with different lengths and positions, and the problems in the background technique can be effectively solved.
[0005] To achieve the above purpose, the utility model provides the following technical solution: a boiler tube expansion connection pressure testing device, including a support frame and a pressure testing mechanism;
[0006] Support frame: There are two support frames in total. An expansion mechanism is arranged between the upper ends of the two support frames, and a lifting mechanism is arranged inside each support frame;
[0007] Pressure testing mechanism: It includes a fixing plate, a water outlet seat, an adjusting component and a plugging seat. The middle parts of the lifting mechanisms are fixedly connected with fixing plates. The right side surface of the left fixing plate is fixedly connected with a water outlet seat. An adjusting component is arranged in the middle of the right fixing plate, and the left side surface of the adjusting component is fixedly connected with a plugging seat. Through the pressure testing mechanism with high degrees of freedom, it is convenient to conduct pressure testing on the expanded boiler tubes with different lengths and positions.
[0008] Further, the expansion mechanism includes a hollow support, a fixing hole, a fixing bolt I and an extension rod. The front and rear sides of the upper ends of the opposite inner side surfaces of the two support frames are fixedly connected with hollow supports. An extension rod is slidably connected between the two hollow supports on the same side of the front and rear. The left and right ends of the extension rod are connected with the adjacent hollow supports through fixing bolts I to adjust the distance between the two support frames according to the length of the boiler tubes to be pressure tested.
[0009] Further, the lifting mechanism includes slide rails, sliders, fixing bolts II, and connecting frames. Slide rails are fixedly connected to the inner walls on the left and right sides of the support frame. Sliders are slidably connected inside the slide rails, and the positions of the sliders are fixed by fixing bolts II. Connecting frames symmetrically distributed up and down are fixedly connected between the two sliders located on the same support frame. Fixing plates are fixedly connected between the two connecting frames on the same side left and right, realizing the height adjustment of the water outlet seat and the plugging seat.
[0010] Further, the pressure testing mechanism further includes a pressure - adding pipeline, a valve, and a pressure gauge. The left side surface of the left fixing plate is fixedly connected with the pressure - adding pipeline. A valve and a pressure gauge are arranged in the middle of the pressure - adding pipeline, with the valve located on the left side of the pressure gauge. The pressure - adding pipeline is communicated with the water outlet seat, realizing pressure testing.
[0011] Further, the adjusting assembly includes a mounting seat, sliding columns, a lead screw, and a runner. The edges of the right fixing plate are slidably connected with sliding columns symmetrically distributed at the four corners. A mounting seat is fixedly connected between the left ends of the four sliding columns. The left side surface of the mounting seat is fixedly connected with the plugging seat. A lead screw is threadedly connected to the middle of the right fixing plate. The left end of the lead screw is rotatably connected to the right side surface of the mounting seat. A runner is fixedly sleeved on the right end of the lead screw, and the runner is located on the right side of the right fixing plate, realizing the insertion of the plugging seat.
[0012] Further, it further includes fluorine sealing rings. The fluorine sealing rings are respectively and evenly sleeved on the outer arc surfaces of the water outlet seat and the plugging seat, avoiding leakage.
[0013] Further, casters are fixedly connected to the front and rear sides at the lower end of the support frame, facilitating the movement of the support frame.
[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: This boiler tube expansion joint pressure testing device has the following advantages:
[0015] Adjust according to the length and height of the boiler tube to be pressure - tested. Adjust the distance that the extension rod extends into the hollow support frame. After approaching the length of the boiler tube to be pressure - tested, fix the extension rod with fixing bolt I. By adjusting the position of the slider, make the heights of the water outlet seat and the plugging seat the same as those of the boiler tube to be pressure - tested. Then, push the support frame on the left side to make the water outlet seat inserted into the left - end interior of the boiler tube to be pressure - tested. By rotating the runner, make the plugging seat inserted into the right - end interior of the boiler tube to be pressure - tested, realizing the plugging of the boiler tube to be pressure - tested. The pressure - adding pipeline is connected to an external pressure pump to add water into the interior of the boiler tube to be pressure - tested. Observe the water pressure change through the pressure gauge. After reaching the test water pressure, tighten the valve to start the test. Through the cooperation of each mechanism, realize the pressure testing of the expanded joint of boiler tubes with different lengths and different positions. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic structural diagram of the present utility model;
[0017] Figure 2 This is the enlarged structural schematic diagram of part A of the utility model;
[0018] Figure 3 This is the enlarged structural schematic diagram of part B of the utility model.
[0019] In the figure: 1 support frame, 2 telescopic mechanism, 21 hollow support, 22 fixing holes, 23 first fixing bolt, 24 extension rod, 3 lifting mechanism, 31 slide rail, 32 slider, 33 second fixing bolt, 34 connecting frame, 4 pressure testing mechanism, 41 pressurizing pipeline, 42 valve, 43 pressure gauge, 44 fixing plate, 45 water outlet seat, 46 adjusting assembly, 461 mounting seat, 462 sliding column, 463 lead screw, 464 runner, 47 plugging seat, 5 fluorine sealing ring, 6 caster. Specific embodiments
[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0021] Please refer to Figures 1-3 , this embodiment provides a technical solution: a boiler tube expansion joint pressure testing device, including a support frame 1 and a pressure testing mechanism 4;
[0022] Support frame 1: There are two in total. A telescopic mechanism 2 is arranged between the upper ends of the two support frames 1. Lifting mechanisms 3 are arranged inside the support frames 1. Casters 6 are fixedly connected to the front and rear sides of the lower ends of the support frames 1;
[0023] The telescopic mechanism 2 includes a hollow support 21, a fixing hole 22, a first fixing bolt 23 and an extension rod 24. The front and rear sides of the upper ends of the opposite inner sides of the two support frames 1 are fixedly connected with hollow supports 21. An extension rod 24 is slidably connected between the two hollow supports 21 on the same side in the front and rear. The left and right ends of the extension rod 24 are connected to the adjacent hollow support 21 through the first fixing bolt 23. The lifting mechanism 3 includes a slide rail 31, a slider 32, a second fixing bolt 33 and a connecting frame 34. The inner walls on the left and right sides of the support frame 1 are fixedly connected with slide rails 31. Sliders 32 are slidably connected inside the slide rails 31. The sliders 32 are fixed in position through the second fixing bolt 33. Connecting frames 34 symmetrically distributed up and down are fixedly connected between the two sliders 32 located on the same support frame 1. A fixing plate 44 is fixedly connected between the two connecting frames 34 on the same side in the left and right. Adjust the distance between the two support frames 1 according to the boiler tube to be pressure-tested. Remove the first fixing bolt 23, adjust the distance that the extension rod 24 extends into the hollow support 21. After approaching the length of the boiler tube to be pressure-tested, fix it through the first fixing bolt 23. Loosen the second fixing bolt 33, the slider 32 slides. After the water outlet seat 45 and the plugging seat 47 are at the same height as the boiler tube to be pressure-tested, tighten the second fixing bolt 33;
[0024] Pressure testing mechanism 4: It includes a fixing plate 44, a water outlet seat 45, an adjusting assembly 46 and a plugging seat 47. The middle parts of the lifting mechanisms 3 are fixedly connected with the fixing plate 44. The right side of the left fixing plate 44 is fixedly connected with the water outlet seat 45. The middle part of the right fixing plate 44 is provided with the adjusting assembly 46. The left side of the adjusting assembly 46 is fixedly connected with the plugging seat 47. The pressure testing mechanism 4 also includes a pressurizing pipeline 41, a valve 42 and a pressure gauge 43. The left side of the left fixing plate 44 is fixedly connected with the pressurizing pipeline 41. The middle part of the pressurizing pipeline 41 is provided with the valve 42 and the pressure gauge 43. The valve 42 is located on the left side of the pressure gauge 43. The pressurizing pipeline 41 is communicated with the water outlet seat 45. The adjusting assembly 46 includes a mounting seat 461, a sliding column 462, a lead screw 463 and a runner 464. The edges of the right fixing plate 44 are slidably connected with four symmetrically distributed sliding columns 462 at the corners. A mounting seat 461 is fixedly connected between the left ends of the four sliding columns 462. The left side of the mounting seat 461 is fixedly connected with the plugging seat 47. The middle part of the right fixing plate 44 is threadedly connected with the lead screw 463. The left end of the lead screw 463 is rotatably connected with the right side of the mounting seat 461. The right end of the lead screw 463 is fixedly sleeved with the runner 464. The runner 464 is located on the right side of the right fixing plate 44. It also includes a fluorine sealing ring 5. The fluorine sealing rings 5 are respectively and evenly movably sleeved on the outer arc surfaces of the water outlet seat 45 and the plugging seat 47. Then, push the left support frame 1 to insert the water outlet seat 45 into the left end inside of the boiler tube to be pressure tested. Rotate the runner 464, the lead screw 463 rotates, driving the mounting seat 461 to move to the left, and the sliding columns 462 slide synchronously to prevent the mounting seat 461 from shaking. The plugging seat 47 is inserted into the right end inside of the boiler tube to be pressure tested. The fluorine sealing rings 5 are all in contact with the inner wall of the boiler tube to be pressure tested to prevent leakage, realizing the plugging of the boiler tube to be pressure tested. The pressurizing pipeline 41 is connected to an external pressure pump to add water to the inside of the boiler tube to be pressure tested. Observe the water pressure change through the pressure gauge 43. After reaching the test water pressure, tighten the valve 42 to start the test.
[0025] The working principle of a boiler tube expansion joint pressure testing device provided by the present utility model is as follows: Adjust the distance between the two support frames 1 according to the boiler tube to be pressure tested. Remove the first fixing bolt 23, adjust the distance that the extension rod 24 extends into the hollow support 21. After approaching the length of the boiler tube to be pressure tested, fix it with the first fixing bolt 23. Subsequently, loosen the second fixing bolt 33, the slider 32 slides. After the water outlet seat 45 and the plugging seat 47 are at the same height as the boiler tube to be pressure tested, tighten the second fixing bolt 33. Then, push the support frame 1 on the left side so that the water outlet seat 45 is inserted into the left end inside of the boiler tube to be pressure tested. Rotate the runner 464, the lead screw 463 rotates, driving the mounting seat 461 to move to the left side, and the sliding column 462 slides synchronously to prevent the mounting seat 461 from shaking. The plugging seat 47 is inserted into the right end inside of the boiler tube to be pressure tested. The fluorine sealing rings 5 are all in contact with the inner wall of the boiler tube to be pressure tested to prevent leakage, realizing the plugging of the boiler tube to be pressure tested. The pressurizing pipeline 41 is connected to an external pressurizing pump to add water to the inside of the boiler tube to be pressure tested. Observe the water pressure change through the pressure gauge 43. After reaching the test water pressure, tighten the valve 42 to start the test.
[0026] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. All equivalent structural or equivalent process transformations made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, are similarly included in the patent protection scope of the present utility model.
Claims
1. A boiler tube expansion and pressure test device, characterized in that: It includes a support frame (1) and a pressure test mechanism (4); Support frame (1): There are two in total. An expansion mechanism (2) is arranged between the upper ends of the two support frames (1), and a lifting mechanism (3) is arranged inside each support frame (1); Pressure test mechanism (4): It includes a fixed plate (44), a water outlet seat (45), an adjustment component (46) and a plugging seat (47). The middle parts of the lifting mechanisms (3) are fixedly connected with a fixed plate (44). The right side surface of the left fixed plate (44) is fixedly connected with a water outlet seat (45). An adjustment component (46) is arranged in the middle of the right fixed plate (44), and the left side surface of the adjustment component (46) is fixedly connected with a plugging seat (47).
2. The boiler tube expansion and pressure test device according to claim 1, characterized in that: The expansion mechanism (2) includes a hollow support (21), a fixing hole (22), a first fixing bolt (23) and an extension rod (24). The front and rear sides of the upper ends of the opposite inner side surfaces of the two support frames (1) are fixedly connected with a hollow support (21). An extension rod (24) is slidably connected between the two hollow supports (21) on the same side of the front and rear. The left and right ends of the extension rod (24) are connected to the adjacent hollow support (21) through the first fixing bolt (23).
3. The boiler tube expansion and pressure test device according to claim 1, wherein: The lifting mechanism (3) includes a slide rail (31), a slider (32), a second fixing bolt (33) and a connecting frame (34). The inner walls on the left and right sides of the support frame (1) are fixedly connected with a slide rail (31). A slider (32) is slidably connected inside each slide rail (31). The sliders (32) are fixed in position through the second fixing bolt (33). Connecting frames (34) symmetrically distributed up and down are fixedly connected between the two sliders (32) in the same support frame (1). A fixed plate (44) is fixedly connected between the two connecting frames (34) on the same side of the left and right.
4. A boiler tube expansion and pressure test device according to claim 3, characterized in that: The pressure test mechanism (4) further includes a pressure pipeline (41), a valve (42) and a pressure gauge (43). The left side surface of the left fixed plate (44) is fixedly connected with a pressure pipeline (41). A valve (42) and a pressure gauge (43) are arranged in the middle of the pressure pipeline (41). The valve (42) is located on the left side of the pressure gauge (43). The pressure pipeline (41) is communicated with the water outlet seat (45).
5. A boiler tube expansion and pressure test device according to claim 3, characterized in that: The adjustment component (46) includes a mounting seat (461), a sliding column (462), a lead screw (463) and a runner (464). The edge of the right fixed plate (44) is slidably connected with sliding columns (462) symmetrically distributed at the four corners. A mounting seat (461) is fixedly connected between the left ends of the four sliding columns (462). The left side surface of the mounting seat (461) is fixedly connected with a plugging seat (47). A lead screw (463) is threadedly connected to the middle of the right fixed plate (44). The left end of the lead screw (463) is rotatably connected to the right side surface of the mounting seat (461). The right end of the lead screw (463) is fixedly sleeved with a runner (464). The runner (464) is located on the right side of the right fixed plate (44).
6. The boiler tube expanding and pressure testing device according to claim 5, characterized in that: It further includes a fluorine sealing ring (5). The fluorine sealing rings (5) are respectively and evenly movably sleeved on the outer arc surface of the water outlet seat (45) and the outer arc surface of the plugging seat (47).
7. A boiler tube expansion joint pressure testing device according to claim 1, characterized in that: Caster wheels (6) are fixedly connected to both the front and rear sides of the lower end of the support frame (1).