Door-shaped pipeline tightness test tool
By installing an exhaust pipe and a sealing structure inside the portal pipe, the problem of air not being able to escape during the pressure test of the portal pipe is solved, thus achieving pressure stability and accuracy of test data, and reducing test costs.
Patent Information
- Application Number
- CN202520328332.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2026-03-03
- Estimated Expiration
- 2035-02-26
AI Technical Summary
In the strength test of portal pipes, the inability to expel air from the pipes leads to unstable pressure during the test, affecting the accuracy of the test data. Furthermore, opening vents can damage the pipe strength and increase the risk of leakage.
Design a portal-type pipe tightness test fixture, including a first test pressure blind flange, a second test pressure blind flange, a water injection pipe and an exhaust pipe. The exhaust pipe is used to expel air from the pipe to ensure pressure stability during the test, and the sealing ring and sealing groove are used to ensure the sealing of the connection.
This method achieves pressure stability during the pressure testing process of portal-type pipelines, ensuring the accuracy of test data while avoiding pipeline damage and leakage risks, and reducing test costs.
Smart Images
Figure CN223966208U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pipeline testing technology, and in particular to a portal-type pipeline tightness testing fixture. Background Technology
[0002] High-pressure mud pipes are crucial pipelines in the drilling and production system, designed for pressures up to 15,000 psi. After fabrication, they undergo a 1.5-fold strength test, increasing the pressure to 22,500 psi. Due to space constraints on board, the watertight pressurization pipeline from the mud pump room to the moon pool is positioned at low points at both ends, and its location cannot be changed as it passes through several compartments. The pipeline is a portal-type (N-shaped) pipe, with all connections welded together and no intermediate disassembly possible. Because the inlet and outlet are both at low points during pressure testing, air cannot be vented from the pipe, making pressure stabilization impossible during the strength test. While a vent at the highest point of the portal-type pipe could release air, the high pressure and special materials of the high-pressure mud pipeline mean that such an installation would not only compromise the pipe's strength but also create a potential leakage hazard later. Utility Model Content
[0003] The purpose of this invention is to provide a portal pipe tightness test fixture. The exhaust pipe allows air inside the portal pipe to be smoothly discharged when water is injected into it, ensuring the accuracy of the test data for the portal pipe tightness test.
[0004] To achieve the above objectives, this utility model provides a portal pipe tightness test fixture, including a first test pressure blind plate, a second test pressure blind plate, a water injection pipe, and an exhaust pipe. The first test pressure blind plate is connected to the first end flange of the portal pipe. The water injection pipe is connected to the first test pressure blind plate and communicates with the inner cavity of the portal pipe. The exhaust pipe is connected to the first test pressure blind plate, with its upper end close to the top surface of the inner cavity of the portal pipe and its lower end extending out of the first test pressure blind plate. The second test pressure blind plate is connected to the second end flange of the portal pipe, and the second test pressure blind plate is provided with a first test pressure connector for connecting a pressure gauge.
[0005] As a preferred embodiment of this utility model, the exhaust pipe includes a first exhaust section and a second exhaust section. An exhaust connection hole is provided on the first pressure test blind plate. The lower end of the first exhaust section is connected to the upper end of the exhaust connection hole through a second pressure test connector. The first exhaust section is vertically arranged in the inner cavity of the portal pipe. The second exhaust section is connected to the lower end of the exhaust connection hole through a third pressure test connector.
[0006] As a preferred embodiment of this utility model, a high-pressure valve is provided on the second exhaust section.
[0007] As a preferred embodiment of this utility model, the exhaust connection hole is located at the edge of the first test pressure blind plate.
[0008] As a preferred embodiment of this utility model, a water injection connection hole is provided on the first test pressure blind plate, and the upper end of the water injection pipe is connected to the lower end of the water injection connection hole through a fourth test pressure connector.
[0009] As a preferred embodiment of this utility model, a sealing ring is provided between the first test pressure blind flange and the first end flange of the portal pipe, and a sealing ring is provided between the second test pressure blind flange and the second end flange of the portal pipe.
[0010] As a preferred embodiment of this utility model, both the first test pressure blind plate and the second test pressure blind plate are provided with sealing grooves that cooperate with the sealing ring.
[0011] Compared with the prior art, the advantages of the portal-type pipe tightness testing fixture of this utility model are as follows:
[0012] This invention, by setting an exhaust pipe extending into the inner cavity of the portal pipe on the first pressure test blind plate, allows air inside the portal pipe to be smoothly discharged through the exhaust pipe when water is injected into the portal pipe, ensuring stable pressure during the pressure test of the portal pipe and ensuring the accuracy of the test data of the portal pipe tightness test; the tightness test is simple to operate, does not damage the portal pipe, and the tightness test fixture is simple to manufacture, reducing the cost of the tightness test. Attached Figure Description
[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.
[0014] Figure 1 A schematic diagram of the structure of a portal-type pipe tightness testing fixture provided by this utility model;
[0015] Figure 2 A schematic diagram of the structure of the first test pressure blind plate provided by this utility model;
[0016] In the figure, the following are the components: portal pipe 1; first end flange 11; second end flange 12; first test pressure blind flange 2; sealing groove 21; second test pressure blind flange 3; water injection pipe 4; fourth test pressure joint 41; vent pipe 5; first vent section 51; second vent section 52; second test pressure joint 53; third test pressure joint 54; high pressure valve 55; first test pressure joint 6; and sealing ring 7. Detailed Implementation
[0017] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.
[0018] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 utility model.
[0019] like Figures 1 to 2 As shown, a preferred embodiment of the present invention provides a portal pipe tightness test fixture, comprising a first test pressure blind plate 2, a second test pressure blind plate 3, a water injection pipe 4, and an exhaust pipe 5. The first test pressure blind plate 2 is connected to the first end flange 11 of the portal pipe 1. The water injection pipe 4 is connected to the first test pressure blind plate 2 and communicates with the inner cavity of the portal pipe 1. The exhaust pipe 5 is connected to the first test pressure blind plate 2, with its upper end close to the top surface of the inner cavity of the portal pipe 1 and its lower end extending out of the first test pressure blind plate 2. The second test pressure blind plate 3 is connected to the second end flange 12 of the portal pipe 1. The second test pressure blind plate 3 is provided with a first test pressure connector 6 for connecting a pressure gauge. The first test pressure blind plate 2 and the second test pressure blind plate 3 respectively seal both ends of the portal pipe 1 to effectively perform a sealing test.
[0020] This invention, by setting an exhaust pipe 5 extending into the inner cavity of the portal pipe 1 on the first test pressure blind plate 2, allows air inside the portal pipe 1 to be smoothly discharged through the exhaust pipe 5 when water is injected into the portal pipe 1, ensuring stable pressure during the pressure test of the portal pipe 1 and ensuring the accuracy of the test data of the portal pipe 1's tightness test; the tightness test is simple to operate, does not damage the portal pipe 1, and the tightness test fixture is simple to manufacture, reducing the cost of the tightness test.
[0021] For example, the exhaust pipe 5 includes a first exhaust section 51 and a second exhaust section 52. An exhaust connection hole is provided on the first pressure test blind plate 2. The lower end of the first exhaust section 51 is connected to the upper end of the exhaust connection hole through a second pressure test connector 53. The first exhaust section 51 is vertically arranged in the inner cavity of the portal pipe 1. The second exhaust section 52 is connected to the lower end of the exhaust connection hole through a third pressure test connector 54. The first exhaust section 51 is built into the portal pipe 1, and the second exhaust section 52 is located in the portal pipe 1, which facilitates the connection and processing of the exhaust pipe 5 with the first pressure test blind plate 2.
[0022] For example, the second exhaust section 52 is equipped with a high-pressure valve 55. After the air in the portal pipe 1 is vented, the high-pressure valve 55 is closed before the portal pipe 1 is tested for tightness.
[0023] Preferably, the exhaust connection hole is located at the edge of the first test pressure blind plate 2, which facilitates the installation of the exhaust pipe 5 and avoids interference between the exhaust pipe 5 and other components.
[0024] For example, the first pressure test blind plate 2 is provided with a water injection connection hole, and the upper end of the water injection pipe 4 is connected to the lower end of the water injection connection hole through the fourth pressure test connector 41 to ensure the sealing of the connection between the water injection pipe 4 and the first pressure test blind plate 2.
[0025] For example, a sealing ring 7 is sandwiched between the first pressure test blind plate 2 and the first end flange 11 of the portal pipe 1, and a sealing ring 7 is sandwiched between the second pressure test blind plate 3 and the second end flange 12 of the portal pipe 1; furthermore, both the first pressure test blind plate 2 and the second pressure test blind plate 3 are provided with sealing grooves 21 that cooperate with the sealing rings 7, to ensure good sealing between the first pressure test blind plate 2, the second pressure test blind plate 3 and the portal pipe 1.
[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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 connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0027] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.
Claims
1. A door type duct tightness test tool, characterized by, The first pressure test blind plate is connected with the first end flange of the door-shaped pipeline, the water injection pipe is connected on the first pressure test blind plate, and the water injection pipe is communicated with the inner cavity of the door-shaped pipeline, the exhaust pipe is connected on the first pressure test blind plate, the upper end of the exhaust pipe is close to the inner cavity top surface of the door-shaped pipeline, the lower end of the exhaust pipe is out of the first pressure test blind plate, the second pressure test blind plate is connected with the second end flange of the door-shaped pipeline, and the second pressure test blind plate is provided with a first pressure test connector for connecting a pressure gauge.
2. The door-type duct tightness test tool according to claim 1, wherein The exhaust pipe comprises a first exhaust section and a second exhaust section, the first pressure test blind plate is provided with an exhaust connection hole, the lower end of the first exhaust section is connected with the upper end of the exhaust connection hole through a second pressure test connector, the first exhaust section is vertically arranged in the inner cavity of the door-shaped pipeline, and the second exhaust section is connected with the lower end of the exhaust connection hole through a third pressure test connector.
3. The door-type duct tightness test tool according to claim 2, wherein The second exhaust section is provided with a high-pressure valve.
4. The door-type duct tightness test tool according to claim 2, wherein The exhaust connection hole is arranged at the edge of the first pressure test blind plate.
5. The door-type duct tightness test tool according to claim 1, wherein The first pressure test blind plate is provided with a water injection connection hole, and the upper end of the water injection pipe is connected with the lower end of the water injection connection hole through a fourth pressure test connector.
6. The door-type duct tightness test tool according to claim 1, wherein Sealing rings are arranged between the first pressure test blind plate and the first end flange of the door-shaped pipeline and between the second pressure test blind plate and the second end flange of the door-shaped pipeline.
7. The door-type duct tightness test tool according to claim 6, wherein The first pressure test blind plate and the second pressure test blind plate are both provided with sealing grooves matched with the sealing rings.