Open pipe pumping tool

Abstract

The application belongs to the field of ship pipeline test tooling, and specifically discloses an open pipeline pump pressure tooling, which comprises a pump cover, a stop structure and a clamping ring, the pump cover is used for sleeving the open end of the open pipeline and being in communication with the open end, the pump cover is connected with an external pump pressure source, and the inner bottom surface thereof is in abutment with the end surface of the open end of the open pipeline; the stop structure and the clamping ring are both used for sleeving the outside of the open end of the open pipeline, and the stop structure is located between the pump cover and the clamping ring; the stop structure is in close cooperation with the outer wall of the open end, the clamping ring is connected with the pump cover through fasteners, and the distance between the two is adjustable, and the clamping ring can be in abutment with the stop structure when close to the pump cover. Through the application, the problem that the existing test needs to weld a connecting piece at the pipeline port, resulting in a heat affected zone at the pipeline port and material waste can be effectively solved.

Description

Technical Field

[0001] This application belongs to the field of marine pipeline testing fixtures, and more specifically, relates to a fixture for pumping open pipelines. Background Technology

[0002] Marine piping systems are crucial for transporting media within ships, distributed throughout various areas. The sealing and strength of these pipelines are prerequisites for their normal operation. Therefore, in the marine industry, after pipeline fabrication, a strength test at 1.5 times the design pressure is required. After installation on the ship, a tightness test at 1.25 times the design pressure is necessary to ensure the system's tightness and prevent leaks during operation. Some marine piping systems, such as lubricating oil systems and drainage systems, have open extraction or injection ports, or welded connections with open front ends, making strength and tightness tests difficult to conduct. This inability to verify the pipeline's tightness can lead to leaks or system defects during operation.

[0003] Traditionally, when conducting strength and tightness tests on open pipelines / systems, threaded joints, flanges, and other connecting parts are welded to the pipeline ends. After the hydraulic test is completed, these connecting parts are then cut off. This method has disadvantages such as material waste, heat-affected zones after welding, and increased workload. It is especially difficult to weld and cut in confined spaces or areas with concentrated pipelines. Utility Model Content

[0004] In response to the deficiencies or improvement needs of existing technologies, this application provides a tooling for pumping open pipelines, which aims to solve the problem that existing tests require welding connectors at the pipeline ports, resulting in a heat-affected zone at the pipeline ports and material waste.

[0005] This application provides a tooling for pumping pressure in an open pipeline, specifically including a pump cover, a stop structure, and a clamping ring. The pump cover is used to fit onto the open end of the open pipeline and is in communication with the open end. The pump cover is connected to an external pumping pressure source, and its inner bottom surface abuts against the end face of the open end of the open pipeline. The stop structure and the clamping ring are both used to fit onto the outside of the open end of the open pipeline, and the stop structure is located between the pump cover and the clamping ring. The stop structure fits tightly with the outer wall of the open end, and the clamping ring is connected to the pump cover by fasteners, and the distance between the two is adjustable. The clamping ring can abut against the stop structure when it is close to the pump cover.

[0006] As a further preferred embodiment, the stop structure includes a rubber pad and a stop ring, wherein the rubber pad is annular and fits tightly against the outer wall of the open end, and the stop ring is clamped to the outside of the rubber pad.

[0007] As a further preferred embodiment, the sides of the stop ring and the clamping ring that are close to each other are both set as conical, and when the clamping ring is close to the pump cover, the conical shape on it abuts against the conical shape on the stop ring.

[0008] As a further preferred embodiment, the stop ring comprises two semi-circular ring structures connected by fasteners.

[0009] As a further preferred embodiment, the open end is used to roughen the outer wall of the rubber pad or to coat it with adhesive.

[0010] As a further preferred embodiment, both the pump cover and the clamping ring are provided with fastener mounting structures, and the fastener mounting structures of the two correspond one-to-one.

[0011] As a further preferred embodiment, the pump cover has multiple fastener mounting structures, which are evenly arranged along the circumference of the pump cover.

[0012] As a further preferred embodiment, the clamping ring has multiple fastener mounting structures, which are evenly arranged along the circumference of the clamping ring.

[0013] As a further preferred embodiment, the fastener mounting structure includes a mounting base with mounting holes for mounting fasteners.

[0014] As a further preferred embodiment, a sealing gasket is provided between the inner bottom surface of the pump cover and the end face of the open end of the open pipeline.

[0015] As a further preferred embodiment, the pump cover is connected to an external pump pressure source via a connection structure, which includes a threaded joint that is fixedly connected to the pump cover and is in communication with the open end of an open pipeline.

[0016] In summary, compared with the prior art, the technical solutions conceived in this application have the following main technical advantages: 1. The fixture designed in this application, through the cooperation of the pump cover, stop structure, and clamping ring, allows the pump cover to abut against the open pipeline, preventing leakage during testing. Simultaneously, the abutment cooperation of the stop structure and clamping ring ensures that the fixture can be reliably assembled at the open end of the open pipeline, guaranteeing the reliability of the test. This fixture can be directly assembled at the open end of the open pipeline without the need for special welding of threaded joints, flanges, or other connecting parts to the open pipeline, effectively avoiding the influence of welding on the open pipeline.

[0017] 2. This application uses a multi-level design to ensure the reliability of the tooling installation. First, the rubber pad in the stop structure fits tightly against the outer wall of the pipeline, ensuring reliable installation. Second, the clamping action of the stop ring on the rubber pad further ensures the reliability of the installation. Third, the abutting and pressing action of the clamping ring on the stop structure further ensures the reliability of the installation.

[0018] 3. A sealing gasket is also provided between the inner bottom surface of the pump cover and the end face of the open end of the open pipeline in this application. This design can not only ensure a reliable seal at the open end of the open pipeline, but also ensure soft contact between the pump cover and the open pipeline to avoid damage to the open pipeline.

[0019] 4. The tooling designed in this application can be directly installed at the open end of the open pipeline without damaging the pipeline, effectively ensuring the pipeline structure. At the same time, the tooling is easy to disassemble and can be reused, effectively avoiding the waste of materials in welding. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a tooling for pumping pressure in an open pipeline provided in an embodiment of this application; Figure 2 This is a side view of a tooling for pumping open pipelines provided in an embodiment of this application; Figure 3 This is a perspective view of a tooling for pumping open pipelines provided in an embodiment of this application.

[0021] In all the accompanying drawings, the same reference numerals are used to denote the same elements or structures, wherein: 1-Pump cover; 2-Stop structure; 3-Clamping ring; 4-Open pipeline; 5-Connection structure; 6-Fastener; 11-Sealing gasket; 21-Rubber gasket; 22-Stop ring; 31-Mounting base; 32-Mounting hole. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0023] like Figure 1 and Figure 3As shown, this application provides a tooling for pumping pressure in an open pipeline. The tooling mainly includes a pump cover 1, a stop structure 2, and a clamping ring 3. The pump cover 1 is fitted onto the open end of the open pipeline 4, and is conductive to the open end of the open pipeline 4. The outer end of the pump cover 1 is connected to an external pump pressure source to inject pressurized liquid into the open pipeline 4. The inner bottom surface of the pump cover 1 abuts against the end face of the open end of the open pipeline 4 to achieve a seal. The stop structure 2 is fitted onto the outside of the open end of the open pipeline, and similarly, the clamping ring 3 is fitted onto the outside of the open end of the open pipeline. The stop structure 2 is located between the pump cover 1 and the clamping ring 3, and is tightly fitted against the outer wall of the open end of the open pipeline. The pump cover 1, the stop structure 2, and the clamping ring 3 are arranged sequentially from the outer end to the inner end along the open end of the open pipe 4. The pump cover 1 mates with the end face of the open end, and the stop structure 2 and the clamping ring 3 mate with the outer wall of the open end. The clamping ring 3 is connected to the pump cover 1 by fasteners 6, and the distance between them is adjustable. When the clamping ring 3 is close to the pump cover 1, it can abut against the stop structure 2, thereby achieving the stopping and positioning function of the clamping ring 3 through the stop structure 2.

[0024] In the above technical solution, the pump cover 1 and the clamping ring 3 are connected by fasteners, and the distance between the pump cover 1 and the clamping ring 3 is adjustable, so that the pump cover 1 can fit tightly against the open end of the open pipe 4 to ensure that the pipe does not leak during pumping. At the same time, the cooperation between the stop structure 2 and the clamping ring 3 ensures that the fixture can be stably installed on the open end of the open pipe 4, ensuring the effective operation of the pumping. The fixture designed in this application is a portable mechanical structure with a simple structure, light weight, simple installation / disassembly, convenient operation, and does not damage the test pipe. It can be quickly installed on the required test pipe.

[0025] In a preferred embodiment, the stop structure 2 includes a rubber pad 21 and a stop ring 22. The rubber pad 21 is an annular structure and is fitted onto the outside of the opening end and fits tightly against the outer wall of the opening end. The stop ring 22 is clamped onto the outside of the rubber pad 21. Through the clamping action of the stop ring 22, the rubber pad 21 is further tightly fitted with the outer wall of the opening end.

[0026] In a preferred embodiment, the outer wall of the open end of the open pipe used for mounting the rubber pad 21 is roughened to increase the friction of the rubber pad 21. Alternatively, adhesive can be applied to the outer wall of the open end of the open pipe to adhere the rubber pad 21 to the outer wall, thereby ensuring the reliability and stability of the tooling installation.

[0027] In a preferred embodiment, the side of the stop ring 22 near the clamping ring 3 is configured with a conical structure, and the side of the clamping ring 3 near the stop ring 22 is also configured with a conical structure. When the clamping ring 3 moves closer to the pump cover 1 (i.e., closer to the stop ring 22), the conical structure on the clamping ring 3 can abut against the conical structure on the stop ring 22, meaning the conical surfaces of the two conical structures can fit together. Thus, on the one hand, the stop ring 22 can provide a positioning and stopping effect on the clamping ring 3; on the other hand, the pressing action of the conical surface on the clamping ring 3 against the conical surface on the stop ring 22 further increases the friction between the rubber pad 21 and the outer wall surface of the pipeline.

[0028] Preferably, the taper α of the conical structures on both the stop ring 22 and the clamping ring 3 is designed to be 30°, optimizing the stopping and clamping effects. Furthermore, the conical structure on the stop ring 22 is formed by gradually inclining inwards from the end of the stop ring 22 near the clamping ring 3. That is, the diameter d of the end of the stop ring 22 near the clamping ring 3 is smaller than the outer diameter D of the stop ring 22 itself. Even further, a stepped structure is provided inside the conical structure on the side near the rubber pad 21. This stepped structure abuts against the side of the rubber pad 21 to ensure effective cooperation between the stop ring 22 and the rubber pad 21, thereby ensuring the subsequent stopping effect.

[0029] In a preferred embodiment, the stop ring 22 is designed to include two semi-circular ring structures connected by fasteners. That is, the stop ring 22 adopts a half-mounted structure, with the two halves of the stop ring structure connected by fasteners. By tightening the fasteners at the connection point to reduce the radius of the stop ring, the inner rubber gasket 21 is pressed tightly against the outer wall of the open pipeline.

[0030] In a preferred embodiment, both the pump cover 1 and the clamping ring 3 are provided with fastener mounting structures, and the fastener mounting structures of the two are one-to-one. In a preferred embodiment, multiple fastener mounting structures are provided on the pump cover 1, and they are evenly arranged along the circumference of the pump cover 1. Similarly, multiple fastener mounting structures are also provided on the clamping ring 3, and they are evenly arranged along the circumference of the clamping ring 3. Preferably, four fastener mounting structures are provided on both the pump cover 1 and the clamping ring 3, and the four fastener mounting structures are evenly distributed at 90° intervals to facilitate a reliable connection between the pump cover 1 and the clamping ring 3.

[0031] In a preferred embodiment, such as Figure 2As shown, the fastener mounting structure includes a mounting base 31, on which mounting holes 32 are provided for mounting fasteners 6. Preferably, the mounting holes 32 are designed as slots to facilitate the installation of fasteners 6. The fasteners are preferably bolts and nuts. Long bolts pass through the corresponding mounting holes 32 on the fastener mounting structure of the pump cover 1 and the clamping ring 3, and are then secured by nuts. By using bolts and nuts, not only can the distance between the pump cover 1 and the clamping ring 3 be adjusted, but the connection between the pump cover 1 and the clamping ring 3 can also be achieved.

[0032] In a preferred embodiment, a sealing gasket 11 is provided between the inner bottom surface of the pump cover 1 and the end face of the open end of the open pipe. This sealing gasket 11 is used to seal against the rigid open pipe end, ensuring the tightness of the pipe after water is injected and the pressure increases. Specifically, the sealing gasket 11 has a hole that communicates with both the open end of the open pipe and the pump cover 1, meaning the pump cover 1, the sealing gasket 11, and the open end of the open pipe are interconnected. Preferably, the sealing gasket 11 is a rubber gasket. Furthermore, the clamping ring 3 is clearance-fitted with the open end of the open pipe 4, and the inner diameter of the clamping ring 3 is preferably 2mm larger than the outer diameter of the open pipe 4, so that the clamping ring 3 can smoothly fit onto the outer wall of the pipe.

[0033] In a preferred embodiment, the pump cover 1 is connected to an external pump pressure source via a connecting structure 5. This connecting structure 5 includes a threaded connector, which is fixedly connected to the pump cover 1 and communicates with the open end of the open pipeline. That is, the threaded connector, pump cover 1, sealing gasket 11, and the open end of the open pipeline are interconnected, allowing the external pump pressure source to pump pressurized liquid into the open pipeline. Specifically, the threaded connector is fixed to the pump cover 1 by welding. Furthermore, the external pump pressure source can be a hydraulic power source (e.g., a hydraulic testing pipeline system) or other suitable pump pressure source.

[0034] The following provides a detailed description of the assembly and use process of the tooling for pumping open pipelines according to this application. This tooling is mainly used in pumping open pipelines and is suitable for pumping operations during strength and tightness tests of open pipelines. In use, the tooling is assembled onto the open end of the open pipeline to be tested, thereby completing the pumping operation. Specifically: First, insert the clamping ring 3 into the open end of the open pipe; Then, roughen or apply glue to the outer wall of the open end of the pipe about 50mm from the opening; wrap a rubber pad 21 around the roughened or glued area. Next, install the two halves of the stop ring on the outside of the rubber pad 21, tighten the stop rings with the fasteners at the two halves of the stop ring, and press the rubber pad 21 against the end of the pipeline; then install the pump cover 1 to the end of the open pipeline opening, and rotate the pump cover 1 so that the mounting hole on it is aligned with the mounting hole at the clamping ring 3. Then, install the fastener 6 in the corresponding mounting holes of the pump cover 1 and the clamping ring 3. By adjusting the distance between the clamping ring 3 and the pump cover 1, the pump cover 1 is pressed against the end of the opening, and the conical surface of the clamping ring 3 is tightly fitted with the conical surface of the rubber pad 21. Then tighten the fastener. Finally, connect the threaded connector on pump cover 1 to the hydraulic power source, and use the hydraulic power source to inject water into the open pipeline to start pumping.

[0035] After the pump pressure is finished, first open the relief valve on the hydraulic power source to release the pressure in the open pipeline until the pressure in the open pipeline is zero. Then, disassemble the hydraulic power source that is threaded to the threaded joint. Next, loosen the fastener 6 between the pump cover 1 and the clamping ring 3, and remove the fastener 6 and the pump cover 1 respectively. Then, loosen the fastener on the stop ring, remove the stop ring and the rubber pad 21, and finally remove the clamping ring 3.

[0036] In summary, the fixture designed in this application can be directly assembled onto the open end of open pipelines and can be used for hydraulic tightness testing in open pipeline environments or on actual ships. During testing, there is no need to specifically weld threaded joints, flanges, or other connecting parts onto the open pipeline, effectively avoiding the impact of welding on the open pipeline. The fixture has a simple structure, is portable and reliably installed, and does not damage the pipeline under test. It can also be reused, avoiding the material waste associated with welding. It is ideally suited for hydraulic testing of open pipelines or pipeline systems, especially in confined spaces or areas with concentrated pipelines.

[0037] It should be understood that expressions such as "comprising" and "may include" as used in this application indicate the existence of the disclosed functions, operations, or constituent elements, and do not limit one or more additional functions, operations, and constituent elements. In this application, terms such as "comprising" and / or "having" may be interpreted as indicating a specific characteristic, number, operation, constituent element, component, or combination thereof, but should not be interpreted as excluding the existence or possibility of adding one or more other characteristics, numbers, operations, constituent elements, components, or combinations thereof.

[0038] It should be understood that the terms “center,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “inner,” “outer,” “clockwise,” “counterclockwise,” “axial,” “radial,” and “circumferential” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0039] In the description of this application, "multiple" means two or more, unless otherwise explicitly specified. In this application, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "fixed," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0040] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A tooling for pumping pressure in open pipelines, characterized in that, Includes a pump cover (1), a stop structure (2), and a clamping ring (3), wherein: The pump cover (1) is used to fit onto the open end of the open pipe (4) and communicate with the open end. The pump cover (1) is connected to an external pump pressure source, and its inner bottom surface abuts against the end face of the open end of the open pipe. The stop structure (2) and the clamping ring (3) are both used to be fitted on the outside of the open end of the open pipeline, and the stop structure (2) is located between the pump cover (1) and the clamping ring (3); the stop structure (2) is tightly fitted with the outer wall of the open end, the clamping ring (3) is connected to the pump cover (1) by fasteners (6), and the distance between the two is adjustable. The clamping ring (3) is configured to abut against the stop structure (2) when it is close to the pump cover (1).

2. The tooling for pumping open pipelines as described in claim 1, characterized in that, The stop structure (2) includes a rubber pad (21) and a stop ring (22). The rubber pad (21) is annular and fits tightly against the outer wall of the opening end. The stop ring (22) is clamped to the outside of the rubber pad (21).

3. The tooling for pumping open pipelines as described in claim 2, characterized in that, The stop ring (22) and the clamping ring (3) are both tapered on the side that is close to each other, and when the clamping ring (3) is close to the pump cover (1), the tapered part on it abuts against the tapered part on the stop ring (22).

4. The tooling for pumping open pipelines as described in claim 2, characterized in that, The stop ring (22) includes two semi-circular ring structures, which are connected by fasteners.

5. The tooling for pumping open pipelines as described in claim 2, characterized in that, The open end is used to roughen or coat the outer wall of the rubber pad (21) with glue.

6. The tooling for pumping open pipelines as described in claim 1, characterized in that, Both the pump cover (1) and the clamping ring (3) are provided with fastener mounting structures, and the fastener mounting structures of the two are one-to-one.

7. The tooling for pumping open pipelines as described in claim 6, characterized in that, The pump cover (1) has multiple fastener mounting structures, which are evenly arranged along the circumference of the pump cover (1); the clamping ring (3) has multiple fastener mounting structures, which are evenly arranged along the circumference of the clamping ring (3).

8. The tooling for pumping open pipelines as described in claim 6, characterized in that, The fastener mounting structure includes a mounting base (31) with mounting holes (32) for mounting fasteners.

9. The tooling for pumping open pipelines as described in claim 1, characterized in that, A sealing gasket (11) is also provided between the inner bottom surface of the pump cover (1) and the end face of the open end of the open pipeline.

10. The tooling for pumping open pipelines as described in any one of claims 1-9, characterized in that, The pump cover (1) is connected to an external pump pressure source through a connection structure (5). The connection structure (5) includes a threaded joint, which is fixedly connected to the pump cover (1) and is connected to the open end of the open pipeline.

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