A boiler pipe joint water pressure test tool

Abstract

The utility model relates to the technical field of boiler pipeline, and disclose a kind of boiler pipeline joint water pressure test tool, including test table, it is characterized by: the upper portion of test table is provided with sealing mechanism, the upper portion of test table is placed with the pipeline in sealing mechanism inside, the lower portion of test table is provided with adjusting mechanism.The utility model is rotated by starting servo motor one gear, make gear drive gear ring rotation, to be driven to the downward movement of triangular snap ring under the cooperation of thread ring to rubber sealing ring extrusion, make rubber sealing ring inward deformation to the outer wall of pipeline is clamped and sealed, compared with traditional boiler pipeline joint water pressure test tool, this boiler pipeline joint water pressure test tool is clamped and sealed to the outer wall of pipeline by rubber sealing ring, to be convenient for fixed sealing to pipeline, after testing, the pipeline can be quickly removed for next test, improve test efficiency.

Description

Technical Field

[0001] This utility model relates to the field of boiler pipeline technology, and more specifically, to a boiler pipeline joint water pressure testing fixture. Background Technology

[0002] Boiler pipe joints are key components connecting various pipes in a boiler system, ensuring the safe transmission of media (water, steam, fuel, etc.) under high temperature and pressure. Boiler pipe joint water pressure testing fixtures are specialized equipment or tool combinations used to perform pressure tests on boiler pipe joints. Their core function is to simulate the high-pressure conditions of the pipeline system in actual operation and verify the sealing performance, strength, and system reliability of the joints.

[0003] Traditional boiler pipe joint hydrostatic testing fixtures have the following shortcomings: In use, they pressurize a closed piping system with water using a pressure pump to reach the test pressure. Utilizing the incompressibility of water, the pressure is evenly distributed to all parts of the joint to detect minor leaks or structural deformations. Before testing, both ends of the pipe need to be sealed using sealing clamps. Flange sealing requires manual alignment of bolt holes and tightening of bolts, while threaded sealing requires wrapping with PTFE tape or applying sealant, which is time-consuming and labor-intensive. Furthermore, each pipe requires separate installation / removal of the clamps, making it impossible to quickly switch between test objects. Therefore, improvements are needed. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, this utility model provides a boiler pipe joint water pressure testing fixture, which has the advantage of rapid testing.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a boiler pipe joint water pressure testing fixture, comprising a testing platform, characterized in that: a sealing mechanism is provided above the testing platform, a pipe is placed above the testing platform and located inside the sealing mechanism, an adjusting mechanism is provided below the testing platform, the sealing mechanism includes a bottom ring block welded to the top of the testing platform, a connecting block is uniformly welded above the bottom ring block, a rubber sealing ring is glued above the connecting block, an outer ring block is welded to the top of the testing platform and located outside the bottom ring block, a threaded groove is opened on the inner side of the outer ring block, a threaded ring is threaded on the inner side of the threaded groove, and a triangular retaining ring is welded below the threaded ring.

[0006] As a preferred embodiment of this utility model, the adjusting mechanism includes a vertical plate, an auxiliary mechanism is provided on the inner side of the top of the vertical plate, the auxiliary mechanism includes a cylindrical body, a movable groove is provided inside the cylindrical body, a round rod extending into the movable groove is welded to the inner side of the top of the vertical plate, a vertical plate slidably connected to the movable groove is welded to the inner side of the round rod, an arc-shaped plate is welded to the front end of the cylindrical body, and round shafts are welded to the inner sides of the arc-shaped plate respectively, with rollers rotatably mounted between the inner sides of the round shafts.

[0007] As a preferred embodiment of this utility model, a servo motor is bolted to the bottom of the test bench, and a gear is provided above the test bench. The output end of the servo motor extends through to the top of the test bench and is bolted to the bottom of the gear.

[0008] As a preferred embodiment of this utility model, a toothed ring is welded above the threaded ring, the toothed ring is located above the outer ring block, and the toothed ring meshes with a gear.

[0009] As a preferred technical solution of this utility model, the adjustment mechanism further includes side plates welded to the lower ends of the test platform. A second servo motor is bolted to the outer side of the side plate, and a lead screw is rotatably installed between the inner sides of the second servo motor. The output end of the second servo motor is bolted to the front end of the lead screw, and the vertical plate is threaded onto the outer sides of both ends of the lead screw.

[0010] As a preferred technical solution of this utility model, a limiting groove is formed on the surface of the test platform, and the vertical plate is slidably connected inside the limiting groove.

[0011] As a preferred embodiment of this utility model, a pressure sensor is bolted to the inner side of the movable groove, and a telescopic spring is elastically installed between the inner side of the pressure sensor and the inner side of the movable plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model uses a servo motor to drive a gear to rotate, which in turn drives a gear ring to rotate. This, in conjunction with a threaded ring, causes a triangular retaining ring to move downwards and compress a rubber sealing ring. This causes the rubber sealing ring to deform inwards, clamping and sealing the outer wall of the pipe. Compared with traditional boiler pipe joint water pressure testing fixtures, this boiler pipe joint water pressure testing fixture uses a rubber sealing ring to clamp and seal the outer wall of the pipe, making it easier to fix and seal the pipe. After the test, the pipe can be quickly removed for the next test, improving testing efficiency.

[0014] 2. This utility model uses a servo motor to drive a lead screw to rotate, which in turn drives a vertical plate to move inward. This allows the rollers to position the pipe. Compared with traditional boiler pipe joint water pressure testing fixtures, this boiler pipe joint water pressure testing fixture uses rollers to squeeze the pipe, thereby positioning the pipe. This makes it easier to insert the pipe into the sealing mechanism, improving testing efficiency and making it more convenient to use. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a vertical cross-sectional view of the present invention;

[0017] Figure 3 for Figure 2 A magnified schematic diagram of the partial structure at point A in the middle;

[0018] Figure 4 for Figure 2 A magnified schematic diagram of the local structure at point B;

[0019] Figure 5 This is a schematic diagram of the overall structure of this utility model.

[0020] In the diagram: 1. Test bench; 2. Pipeline; 3. Sealing mechanism; 31. Bottom ring block; 32. Connecting block; 33. Rubber sealing ring; 34. Outer ring block; 35. Threaded groove; 36. Threaded ring; 37. Gear ring; 38. Triangular retaining ring; 4. Servo motor one; 5. Adjustment mechanism; 51. Servo motor two; 52. Side plate; 53. Lead screw; 54. Vertical plate; 55. Limiting groove; 6. Auxiliary mechanism; 61. Cylinder; 62. Movable groove; 63. Round rod; 64. Movable plate; 65. Pressure sensor; 66. Telescopic spring; 67. Arc plate; 68. Round shaft; 69. Roller; 7. Gear. Detailed Implementation

[0021] 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.

[0022] like Figures 1 to 5As shown, this utility model provides a boiler pipe joint water pressure testing fixture, including a test platform 1, a sealing mechanism 3 above the test platform 1, a pipe 2 inside the sealing mechanism 3 placed above the test platform 1, an adjustment mechanism 5 below the test platform 1, the sealing mechanism 3 including a bottom ring block 31 welded above the test platform 1, a connecting block 32 evenly welded above the bottom ring block 31, a rubber sealing ring 33 glued above the connecting block 32, an outer ring block 34 welded above the test platform 1 outside the bottom ring block 31, a threaded groove 35 opened on the inner side of the outer ring block 34, a threaded ring 36 threaded on the inner side of the threaded groove 35, and a triangular retaining ring 38 welded below the threaded ring 36.

[0023] Among them, a servo motor 4 is bolted on the lower part of the test platform 1, and a gear 7 is set on the upper part of the test platform 1. The output end of the servo motor 4 passes through to the upper part of the test platform 1 and is connected to the bottom bolt of the gear 7. A toothed ring 37 is welded on the upper part of the threaded ring 36. The toothed ring 37 is located above the outer ring block 34 and meshes with the gear 7.

[0024] In operation, pipe 2 is first hoisted and slowly lowered from top to bottom. When pipe 2 moves above the sealing mechanism 3, servo motor 2 51 is activated, causing the lead screw 53 to rotate. The lead screw 53 then moves the vertical plate 54 inward, which in turn moves the arc plate 67 inward, causing the roller 69 to press against the outer wall of pipe 2. The vertical plate 54 continues to move inward, causing the movable plate 64 to press against the telescopic spring 66, which in turn presses against the pressure sensor 65. When the pressure reaches a predetermined value, the pressure sensor 65 releases an electrical signal to the PLC. The PLC then controls the servo motor 2 51 to stop via the control board. Stop the movement. At this time, continue to insert pipe 2 into the sealing mechanism 3, so that pipe 2 drives roller 69 to rotate, thereby positioning pipe 2. After pipe 2 is inserted into the sealing mechanism 3, start servo motor 4, so that servo motor 4 drives gear 7 to rotate, so that gear 7 drives gear ring 37 to rotate, so that gear ring 37 drives threaded ring 36 to rotate inside threaded groove 35, thereby causing triangular retaining ring 38 to move downward, so that triangular retaining ring 38 squeezes the outer wall of rubber sealing ring 33, so that rubber sealing ring 33 deforms and contracts inward, so that rubber sealing ring 33 squeezes pipe 2, thereby sealing pipe 2.

[0025] By starting the servo motor 4, the gear 7 is driven to rotate, which in turn drives the gear ring 37 to rotate. This, in conjunction with the threaded ring 36, causes the triangular retaining ring 38 to move downwards, squeezing the rubber sealing ring 33. This causes the rubber sealing ring 33 to deform inwards, clamping and sealing the outer wall of the pipe 2. Compared with traditional boiler pipe joint water pressure testing fixtures, this boiler pipe joint water pressure testing fixture uses the rubber sealing ring 33 to clamp and seal the outer wall of the pipe 2, thus facilitating the fixing and sealing of the pipe 2. After the test, the pipe 2 can be quickly removed for the next test, improving testing efficiency.

[0026] The adjustment mechanism 5 includes a vertical plate 54, an auxiliary mechanism 6 is provided on the inner side of the top of the vertical plate 54, the auxiliary mechanism 6 includes a cylinder 61, the cylinder 61 has a movable groove 62 inside, a round rod 63 extending into the movable groove 62 is welded to the inner side of the top of the vertical plate 54, the vertical plate 54 is slidably connected to the movable groove 62 is welded to the inner side of the round rod 63, an arc plate 67 is welded to the front end of the cylinder 61, a round shaft 68 is welded to the inner side of the arc plate 67, and a roller 69 is rotatably installed between the inner sides of the round shaft 68; the adjustment mechanism 5 also includes side plates 52 welded to the lower ends of the test platform 1, a servo motor 51 is bolted to the outer side of the side plate 52, a lead screw 53 is rotatably installed between the inner sides of the servo motor 51, the output end of the servo motor 51 is bolted to the front end of the lead screw 53, and the vertical plate 54 is threaded onto the outer sides of both ends of the lead screw 53.

[0027] The servo motor 51 drives the lead screw 53 to rotate, which in turn drives the vertical plate 54 to move inward. This causes the roller 69 to position the pipe 2. Compared with the traditional boiler pipe joint water pressure testing fixture, this boiler pipe joint water pressure testing fixture uses the roller 69 to squeeze the pipe 2, thereby positioning the pipe 2. This makes it easier to insert the pipe 2 into the sealing mechanism 3, improving testing efficiency and making it easier to use.

[0028] The test bench 1 has a limiting groove 55 on its surface, and the vertical plate 54 is slidably connected inside the limiting groove 55.

[0029] The rotation of the lead screw 53 causes the vertical plate 54 to move back and forth inside the limiting groove 55, thereby limiting the vertical plate 54 through the limiting groove 55 and preventing the vertical plate 54 from shifting and affecting the positioning effect.

[0030] A pressure sensor 65 is bolted to the inner side of the movable groove 62, and a telescopic spring 66 is elastically installed between the inner side of the pressure sensor 65 and the inner side of the movable plate 64.

[0031] The pressure sensor 65 detects the squeezing force of the movable plate 64, thereby determining the clamping force of the roller 69 on the pipe 2, which improves the positioning effect and makes it easier to use.

[0032] Working principle and usage process of this utility model:

[0033] In operation, pipe 2 is first hoisted and slowly lowered from top to bottom. When pipe 2 moves above the sealing mechanism 3, servo motor 2 51 is activated, causing the lead screw 53 to rotate. The lead screw 53 then moves the vertical plate 54 inward, which in turn moves the arc plate 67 inward, causing the roller 69 to press against the outer wall of pipe 2. The vertical plate 54 continues to move inward, causing the movable plate 64 to press against the telescopic spring 66, which in turn presses against the pressure sensor 65. When the pressure reaches a predetermined value, the pressure sensor 65 releases an electrical signal to the PLC. The PLC then controls the servo motor 2 51 to stop via the control board. Stop the movement. At this time, continue to insert pipe 2 into the sealing mechanism 3, so that pipe 2 drives roller 69 to rotate, thereby positioning pipe 2. After pipe 2 is inserted into the sealing mechanism 3, start servo motor 4, so that servo motor 4 drives gear 7 to rotate, so that gear 7 drives gear ring 37 to rotate, so that gear ring 37 drives threaded ring 36 to rotate inside threaded groove 35, thereby causing triangular retaining ring 38 to move downward, so that triangular retaining ring 38 squeezes the outer wall of rubber sealing ring 33, so that rubber sealing ring 33 deforms and contracts inward, so that rubber sealing ring 33 squeezes pipe 2, thereby sealing pipe 2.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A boiler pipe joint water pressure testing fixture, comprising a testing platform (1), characterized in that: A sealing mechanism (3) is provided above the test platform (1), and a pipe (2) located inside the sealing mechanism (3) is placed above the test platform (1). An adjustment mechanism (5) is provided below the test platform (1). The sealing mechanism (3) includes a bottom ring block (31) welded above the test platform (1). A connecting block (32) is uniformly welded above the bottom ring block (31). A rubber sealing ring (33) is glued above the connecting block (32). An outer ring block (34) located outside the bottom ring block (31) is welded above the test platform (1). A threaded groove (35) is opened on the inner side of the outer ring block (34). A threaded ring (36) is installed on the inner side of the threaded groove (35). A triangular retaining ring (38) is welded below the threaded ring (36). The adjustment mechanism (5) includes a vertical plate (54), and an auxiliary mechanism (6) is provided on the inner side of the top of the vertical plate (54). The auxiliary mechanism (6) includes a cylindrical body (61), and a movable groove (62) is provided inside the cylindrical body (61). A round rod (63) extending into the movable groove (62) is welded to the inner side of the top of the vertical plate (54). A vertical plate (54) that is slidably connected to the movable groove (62) is welded to the inner side of the round rod (63). An arc plate (67) is welded to the front end of the cylindrical body (61). A round shaft (68) is welded to the inner side of the arc plate (67). A roller (69) is rotatably installed between the inner sides of the round shaft (68).

2. The boiler pipe joint water pressure testing fixture according to claim 1, characterized in that: A servo motor (4) is bolted on the lower part of the test bench (1), and a gear (7) is provided on the upper part of the test bench (1). The output end of the servo motor (4) extends through to the upper part of the test bench (1) and is bolted to the bottom of the gear (7).

3. The boiler pipe joint water pressure testing fixture according to claim 2, characterized in that: A toothed ring (37) is welded above the threaded ring (36). The toothed ring (37) is located above the outer ring block (34) and meshes with the gear (7).

4. The boiler pipe joint water pressure testing fixture according to claim 1, characterized in that: The adjustment mechanism (5) also includes a side plate (52) welded to the lower ends of the test bench (1). A servo motor (51) is bolted to the outer side of the side plate (52). A lead screw (53) is rotatably installed between the inner sides of the servo motor (51). The output end of the servo motor (51) is bolted to the front end of the lead screw (53). The vertical plate (54) is threaded onto the outer sides of both ends of the lead screw (53).

5. The boiler pipe joint water pressure testing fixture according to claim 4, characterized in that: The test bench (1) has a limiting groove (55) on its surface, and the vertical plate (54) is slidably connected inside the limiting groove (55).

6. The boiler pipe joint water pressure testing fixture according to claim 1, characterized in that: A pressure sensor (65) is bolted to the inside of the movable groove (62), and a telescopic spring (66) is elastically installed between the inside of the pressure sensor (65) and the inside of the movable plate (64).

Images