A pipeline safety testing and protection device for chemical pipeline installation construction sites
By designing a test cover mechanism on chemical pipelines and using support units and baffle structures to buffer the impact of high-pressure water, the problem of difficult testing of pipeline welding quality at construction sites was solved, and safe pressure resistance testing was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANQING CHEMICAL CONSTRUCTION INVESTMENT CO LTD
- Filing Date
- 2025-07-28
- Publication Date
- 2026-07-03
AI Technical Summary
At chemical plant construction sites, pipes processed on-site cannot be professionally tested, resulting in compromised welding quality, a risk of pipe bursts, and the safety of testing personnel and equipment.
Design a test protection device for chemical pipeline installation construction site, including a test cover mechanism covering the pipeline, and a protection system composed of support unit, baffle structure and clamp spring, which can buffer the impact force of high pressure water when the pipeline bursts.
It effectively reduces the impact force generated by pipe bursts, protects testing personnel and equipment, avoids the hazards caused by high-pressure water jets, and provides a safe pressure testing environment.
Smart Images
Figure CN224456366U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of chemical pipeline construction, installation and testing technology, and in particular relates to a pipeline safety testing and protection device at the chemical pipeline installation construction site. Background Technology
[0002] In the construction of chemical plant infrastructure, pipeline construction is a key focus because the pipeline system is the core foundation for transporting materials during chemical production. Therefore, ensuring the quality of pipeline construction and the stable and safe transport of production materials during production are crucial.
[0003] At pipeline construction sites, it is often necessary to fabricate pipes of specific lengths and shapes on-site according to the site conditions (such as fabricating pipe fittings of specific lengths and bends on-site to connect pipes) in order to achieve a specific pipe configuration (such as for use as a pipe fitting).
[0004] During on-site pipe fabrication, welding is often required, such as welding at joints and flanges. Whether the welding quality meets the standards (such as the sealing of the weld seam), whether the fittings welded to the pipe are properly sealed, and whether the pressure resistance of the welded pipe meets the predetermined requirements will directly affect the safety of the subsequent use of the pipeline in the factory.
[0005] Pipes custom-made on-site, based on actual conditions, differ from pipes purchased from the market. Commercially available, qualified pipes undergo rigorous testing by manufacturers before sale, ensuring their performance meets standards in all aspects. Pipes custom-made on-site, however, lack the professional testing equipment available to manufacturers, leading to inconsistent quality.
[0006] Pipes fabricated on-site by workers cannot be sent to professional testing companies for testing. This is because pipeline construction often requires on-site fabrication of pipes with specific shapes (or uses), and in complex pipeline construction, the number of temporarily fabricated pipes on-site is often large. After fabrication, they are directly installed onto the pipeline system.
[0007] Therefore, after workers complete the pipework, in order to ensure that the pipework will not malfunction in subsequent work, an on-site pressure test is often conducted. The test method is the same as the existing method: the outlet end of the pipe is blocked by a plug or other means, and the inlet end is connected to a test water pump. The test water pump pumps high-pressure water at a certain pressure into the pipe. By maintaining a specific pressure for a certain period of time, if the pipework does not show any defects such as weld cracking, seepage, or seepage at flange joints, the pipework performance is qualified.
[0008] However, in actual testing, due to limited on-site testing conditions, if the welding quality of the pipe is substandard and it is not pressure resistant, the pipe is prone to bursting. During the bursting process, the high-pressure water inside the pipe generates a very large destructive force, posing a great threat to the safety of the testing personnel and the safety of the on-site equipment. Utility Model Content
[0009] Based on the above background, the purpose of this utility model is to provide a pipeline safety testing and protection device for chemical pipeline installation and construction sites.
[0010] To achieve the above objectives, the present invention adopts the following technical solution:
[0011] A pipeline safety testing and protection device for chemical pipeline installation construction sites, including a test cover mechanism that covers the pipeline;
[0012] The test cover mechanism includes several support units that can be detachably installed on the pipe, and several baffle structures that are circumferentially installed between the support units, with the baffle structures covering the pipe.
[0013] It also includes several hoop springs that are fitted onto the mesh structure. After the test pipe bursts, the hoop springs pull the mesh structure inward to tighten it.
[0014] Preferably, the support unit includes a polygonal support, and a clamp is provided at the center of the polygonal support, which is tightened onto the test pipe.
[0015] Preferably, the longitudinal cross-sectional shape of the polygonal support is a regular hexagon;
[0016] The clamp includes a first clamp body and a second clamp body that mates with the first clamp body;
[0017] The outer side walls of the first hoop and the second hoop are fixedly installed on the inner side wall of the polygonal bracket by connectors.
[0018] Preferably, the connector includes a connecting seat that is fixedly connected to the inner wall of the polygonal bracket and the outer walls of the corresponding first hoop and second hoop respectively;
[0019] It also includes connectors that are threaded onto the connectors respectively, and connecting rods are threaded between the connectors;
[0020] The connector includes a threaded head that is threaded onto the connecting rod, and a threaded rod that is threaded onto the connecting seat is welded onto the threaded head.
[0021] Preferably, six mesh structures are installed between the polygonal supports;
[0022] The mesh structure is distributed on the six side walls of the polygonal support.
[0023] Preferably, the barrier structure includes a barrier frame, and a metal barrier is fixedly connected inside the barrier frame;
[0024] The mesh frame and the polygonal support are slidably connected by several spring components.
[0025] Preferably, the spring component includes a slide rod fixedly connected to the polygonal bracket, a spring sleeved on the slide rod, a spring seat threaded to the outer end of the slide rod, and the top of the spring abutting against the bottom of the spring seat.
[0026] Preferably, the hoop spring is annular in shape;
[0027] The clamp spring is fitted with several connecting rings, which are detachably and fixedly connected to the retaining frame by connecting screws.
[0028] Preferably, a water-retaining sleeve is fitted on the outer side of the test cover mechanism.
[0029] This utility model has the following beneficial effects:
[0030] 1. During the testing process, the test cover mechanism is used to cover the test pipe, especially the welding positions on the pipe, including the welding positions of the pipe fittings and pipe butt welding positions.
[0031] This method ensures that even if a pipe bursts during the pressure test, the impact of the burst can be effectively reduced under the protection of the test cover mechanism, thus protecting personnel and equipment and avoiding the hazards caused by the strong impact of the burst pipe (such as high-pressure water impact or pipe fragment impact).
[0032] 2. During the test, when the pipeline ruptures severely and high-pressure water gushes outward from different directions, the baffle frames on several or all six baffle structures slide outward (opening up) under the high-energy impact of the water flow. Meanwhile, all the baffle structures are held together by the clamping springs. Therefore, the clamping springs gradually expand elastically under the movement of the baffle structures (the baffle structures are simultaneously buffered by the spring components). Furthermore, as the baffle structures continuously open outward and slide inward to close, the annular clamping springs continuously open and close, achieving further energy reduction and buffering—lowering the damage caused by the high-pressure splashing water—through this elastic expansion and contraction process.
[0033] 3. This utility model addresses the issue of temporary pipe fabrication during pipeline construction and installation in chemical industrial parks. It proposes a simple, safe, and effective protective measure for pressure testing of these fabricated pipes, thus solving the safety problem of testing prefabricated pipes on-site and providing a safety guarantee for pressure testing of these pipes. Attached Figure Description
[0034] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0035] Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present utility model;
[0036] Figure 2 This is a schematic diagram of the test cover mechanism in an embodiment of the present invention;
[0037] Figure 3 This is a schematic diagram of the spring component in an embodiment of the present utility model;
[0038] Figure 4 This is a schematic diagram of the connecting clamp and polygonal bracket in the embodiment of this utility model;
[0039] Figure 5 This is a schematic diagram of the connector structure in an embodiment of this utility model;
[0040] Figure 6 This is a schematic diagram of the planar structure of the test cover mechanism in an embodiment of this utility model;
[0041] Figure 7 This is a schematic diagram of the test cover mechanism from another perspective in an embodiment of this utility model.
[0042] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0043] 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.
[0044] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0045] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.
[0046] Example 1
[0047] like Figure 1-7 As shown, a pipeline safety testing and protection device for chemical pipeline installation construction site includes a test cover mechanism 3 that covers the pipeline; during the test, the test cover mechanism 3 covers the test pipeline 1, especially the welding positions on the pipeline, including the pipe connection welding position, the pipe butt welding position, and other welding positions.
[0048] By means of the pressure resistance test, even if the pipe bursts and ruptures, the impact generated by the burst pipe can be effectively reduced under the protection of the test cover mechanism 3, thereby protecting personnel and equipment and avoiding the harm caused by the strong impact of the burst pipe (such as high-pressure water impact or pipe fragment impact).
[0049] Specifically, the test cover mechanism 3 includes several detachable support units that are installed on the pipe (the support units are arranged along the length of the pipe, preferably according to the welding position of the pipe, so as to completely cover the welding position on the pipe), and also includes several baffle structures that are circumferentially installed between the support units, and the baffle structures cover the pipe.
[0050] Specifically, the support unit includes a regular hexagonal polygonal support 31, and a clamp 32 is provided at the center of the polygonal support 31, which is clamped to the test pipe 1.
[0051] The bracket unit is installed on the pipeline using clamp 32. Specifically, the clamp 32 has the same structure as the existing clamp 32. The clamp 32 includes a first clamp body and a second clamp body that cooperates with the first clamp body. When the first clamp body and the second clamp body are combined, the first clamp body and the second clamp body are tightened on the pipeline by bolt fastening and kept in a tightened state.
[0052] The polygonal bracket 31 is detachably installed on the test pipe 1. Therefore, after the clamp 32 is installed, the polygonal bracket 31 is installed.
[0053] Specifically, the outer sidewall centers of the first hoop and the second hoop are fixedly installed on the inner sidewall of the polygonal bracket 31 via connectors 33 (they are detachable via connectors 33).
[0054] The connector 33 includes a connector 333 (with threaded grooves) that are fixedly connected to the inner wall of the polygonal bracket 31 and the outer walls of the corresponding first hoop and second hoop respectively.
[0055] It also includes connectors 332 that are threaded onto connectors 333, and connecting rods 331 are threaded between connectors 332.
[0056] Specifically, the connector 332 includes a threaded head (shaped like a regular hexagon with a threaded groove of a certain depth) that is threaded onto the connecting rod 331, and a threaded rod that is threaded onto the connecting seat 333 is welded onto the threaded head.
[0057] During operation, the connectors 332 are pre-tightened to both ends of the connecting rod 331. At this time, the length of the connecting rod 331 to the connector 332 is less than the spacing between the connectors 333. Then, the operator rotates one end of the connector 332 in the opposite direction (to unscrew the thread) to install the screw on the connector 332 onto one end of the connector 333. The other end of the connector 333 is connected in the same way to fix the clamp 32 to the polygonal bracket 31 (the polygonal bracket 31 is a frame that is pre-fitted directly onto the test pipe 1).
[0058] This method achieves a protective net structure with a polygonal support frame 31 and six mesh structures installed between the polygonal support frames 31; as a protective net, the protective net has high structural strength to cope with the impact energy generated in the event of a pipe rupture or burst.
[0059] Specifically, six mesh structures are distributed between the six side walls of the polygonal support 31.
[0060] Example 2
[0061] like Figure 1-7 As shown, this embodiment is based on the structure of embodiment 1. In the event of a pipe burst or rupture during operation, in order to buffer and reduce the impact energy (high-pressure water or pipe burst fragments), the above-mentioned baffle structure includes a baffle frame 34 (the baffle frame 34 is installed after the polygonal bracket 31 is installed). A metal baffle 341 (the metal baffle 341 is made of thickened steel wire mesh) is fixedly connected inside the baffle frame 34.
[0062] The retaining mesh frame 34 and the polygonal support 31 are slidably connected by several spring members 35. The spring members 35 are used to buffer and reduce the energy when high-pressure water impacts the retaining mesh structure during bursting or pipe rupture.
[0063] Specifically, the spring component 35 includes a slide rod 351 fixedly connected to the polygonal bracket 31, a spring 352 sleeved on the slide rod 351, a spring seat 353 threadedly connected to the outer end of the slide rod, and the top of the spring 352 abutting against the bottom of the spring seat 353 (the top of the spring 352 is fixed to the baffle frame 34, and the top is not fixed).
[0064] When high-pressure water impacts the barrier structure, the barrier structure accelerates outward under the impact. During this acceleration, spring 352 gradually compresses to its shortest length. Subsequently, as spring 352 moves in conjunction with the barrier structure, it continuously stretches and contracts, reducing the impact energy through deformation. This protects the barrier structure and buffers the impact energy of the high-pressure water (using the deformation of spring 352 to create a buffer is a common application based on this inherent property of spring 352 in existing technology).
[0065] Example 3
[0066] like Figure 1-7 As shown, this embodiment, based on the structure of embodiment 2, further enhances the buffering and energy reduction effect to cope with situations such as multiple pipe burst points and high water pressure during testing. It also includes several clamping springs 4 fitted onto the baffle structure. After the test pipe 1 bursts, the clamping springs 4 tighten the baffle structure inwards. The clamping springs 4 are ring-shaped.
[0067] The clamp spring 4 is also installed in a detachable manner, specifically as follows:
[0068] Several connecting rings 41 are sleeved on the clamp spring 4. The connecting rings 41 are detachably and fixedly connected to the mesh frame 34 by connecting screws 411. That is, one end of the connecting screw 411 is threaded to the connecting ring 41, and the other end is threaded to the mesh frame 34 (in actual operation, a screw connecting seat 333 that mates with the connecting screw can be fixed on the mesh frame 34).
[0069] Through the aforementioned structure, when a pipeline ruptures severely and high-pressure water surges outward from different directions, the baffle frames 34 on several or all of the six baffle structures slide outward (opening up) under the high-energy impact of the water flow. Meanwhile, all the baffle structures are tightly bound between the clamping springs 4. Therefore, the clamping springs 4 gradually expand elastically under the movement of the baffle structures (the baffle structures are simultaneously buffered by the cooperation of the springs 352). Furthermore, as the baffle structures continuously expand outward and slide inward to close, the annular clamping springs 4 continuously expand and close, achieving further energy reduction and buffering—lowering the damage caused by the high-pressure splashing water—through this elastic expansion and contraction process.
[0070] Example 4
[0071] like Figure 1-7 As shown, in this embodiment, based on the structure of embodiment 3, the device needs to be set up during the initial test in actual work. However, after testing one pipe, the pipe is inserted through the gap between the clamps 32 during subsequent pipe tests.
[0072] In actual operation, clamp 32 does not need to be excessively tight to clamp the pipe (therefore, the subsequent test pipe can be directly pushed in, and even if it is not tightly clamped, it will not have any impact), because the pipe bursts radially outwards, and will not produce significant destructive force in a horizontal position. Therefore, for the sake of testing efficiency, in actual operation, for straight pipes (without flanges), they can be directly inserted into the clamps 32 in the above manner, and the bolts on the clamps 32 can be tightened appropriately.
[0073] For pipes with interfaces, clamp 32 needs to be completely loosened. At this time, connector 33 needs to be loosened from clamp 32 (loosen only one side). After the pipe is put back into clamp 32, connector 33 is connected to polygon bracket 31 again in the above manner.
[0074] In actual operation, the test pipe 1 can be supported at both ends on the pads as in the existing method, and the entire device can be installed on the pipe (covering the welding position).
[0075] Similar to existing pipeline pressure tests, one end of test pipeline 1 is sealed with a pipe plug, and the other end is connected to existing pressure testing equipment (mostly mobile pipeline pressure testing equipment, mainly consisting of a water tank and a high-pressure water pump) to pump high-pressure test water into test pipeline 1. The test water pressure is monitored using a pressure gauge.
[0076] Example 5
[0077] like Figure 1-7 As shown, in this embodiment, based on the structure of embodiment 4, a water-blocking sleeve 2 is fitted on the outside of the test cover mechanism 3. By fitting the water-blocking sleeve 2, the high-pressure water is further blocked (the impact energy of the high-pressure water is significantly reduced after passing through the baffle structure and the sleeve spring 4, and then it directly impacts the water-blocking sleeve).
[0078] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.
Claims
1. A chemical pipeline installation construction site pipeline safety test protection device, characterized in that, This includes a test cover mechanism that covers the pipe; The test cover mechanism includes several support units that can be detachably installed on the pipe, and several baffle structures that are circumferentially installed between the support units, with the baffle structures covering the pipe. It also includes several hoop springs that are fitted onto the mesh structure. After the test pipe bursts, the hoop springs pull the mesh structure inward to tighten it.
2. The chemical piping installation construction site piping safety test protection device according to claim 1, characterized by, The support unit includes a polygonal support, and a clamp is provided at the center of the polygonal support, which is tightened onto the test pipe.
3. The chemical piping installation construction site piping safety test protection device according to claim 2, characterized by, The longitudinal cross-sectional shape of the polygonal support is a regular hexagon; The clamp includes a first clamp body and a second clamp body that mates with the first clamp body; The outer side walls of the first hoop and the second hoop are fixedly installed on the inner side wall of the polygonal bracket by connectors.
4. The chemical piping installation construction site piping safety test protection device according to claim 3, characterized by, The connector includes connecting seats that are fixedly connected to the inner wall of the polygonal bracket and the outer walls of the corresponding first hoop and second hoop respectively; It also includes connectors that are threaded onto the connectors respectively, and connecting rods are threaded between the connectors; The connector includes a threaded head that is threaded onto the connecting rod, and a threaded rod that is threaded onto the connecting seat is welded onto the threaded head.
5. The chemical piping installation construction site piping safety test protection device according to claim 3, characterized by, Six mesh structures are installed between the polygonal supports; The mesh structure is distributed on the six side walls of the polygonal support.
6. The chemical piping installation construction site piping safety test protection device according to claim 5, characterized by, The barrier structure includes a barrier frame, and a metal barrier is fixedly connected inside the barrier frame; The mesh frame and the polygonal support are slidably connected by several spring components.
7. The chemical piping installation construction site piping safety test protection device according to claim 6, characterized by, The spring component includes a slide rod fixedly connected to a polygonal bracket, a spring sleeved on the slide rod, a spring seat threaded to the outer end of the slide rod, and the top of the spring abutting against the bottom of the spring seat.
8. The chemical piping installation construction site piping safety test protection device according to claim 6, characterized by, The hoop spring is ring-shaped; The clamp spring is fitted with several connecting rings, which are detachably and fixedly connected to the retaining frame by connecting screws.
9. The chemical piping installation construction site piping safety test protection device according to claim 1, characterized by, A water-blocking sleeve is fitted on the outside of the test cover mechanism.