A method for testing the tightness of a catheter

Abstract

The application discloses a conduit sealing test method, comprising: based on the conduit sealing test system, realizing the sealing test process of the conduit pipeline under the condition of realizing pressure stabilization or generating pressure impact. The pressurizes water through the high-pressure water pipe to the inside of the conduit pipeline, after reaching the predetermined pressure, the pressure stabilizing valve is closed to stabilize the pressure, whether the butt joint of the conduit pipe thread joint on the conduit pipeline leaks is observed, and the sealing test of the conduit pipeline under the condition of pressure stabilization is realized; the high-pressure water in the high-pressure container impacts into the conduit pipeline with pressure stabilization state through the pressure change test pipe to generate pressure impact, realizes the pressure impact on one end or both ends of the test conduit pipeline, realizes the simulation of the pressure impact of the fluid flowing in the pipeline caused by the change of the pipe diameter during construction, and solves the problem that the prior art cannot simulate the pressure impact of the fluid flowing in the pipeline caused by the change of the pipe diameter during construction.

Description

Technical Field

[0001] This invention relates to a method for testing the airtightness of a conduit, belonging to the field of pipeline pressure testing technology. Background Technology

[0002] During construction, fluid media need to be transported through pipelines. In order to ensure the safety of the transport, a tightness test is required for the pipeline formed by connecting multiple pipe sections.

[0003] Existing flow tightness testing system technology can be found in the gas pipeline tightness detector published in Chinese Patent Publication No. CN202676411U. The disclosed technology involves opening the water pressure control valve and the pressurization control valve, at which time the gas pipeline connection valve is also open. The gas pipeline is pressurized by a gas pressurization device. The pressurization process should be slow to ensure that the pressure inside the gas pipeline rises steadily. The pressurization control valve is then closed, and the pressure is maintained for 20 minutes. Although the gas pressurization device can perform pressure stability change tests on the pipeline connected to the gas pipeline connection valve, it has the problem that it cannot simulate the pressure shock caused by changes in pipe diameter during construction when the fluid flows through the pipeline. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a method for catheter occlusion testing.

[0005] The present invention is achieved through the following technical solutions.

[0006] The present invention provides a catheter sealing test method, comprising: performing a catheter sealing test under conditions of pressure stabilization or pressure shock on the catheter tubing based on a catheter sealing test system.

[0007] The catheter closure testing system includes:

[0008] A press that uses water as a fluid to increase pressure;

[0009] High-pressure water pipe, one end of which is connected to the outlet of the press, and the other end is connected to the pressure stabilizing valve;

[0010] End cap A is used to block one end of the conduit pipe, and a pressure regulating valve is installed on end cap A in a sealed connection.

[0011] End cap B is used to block the other end of the conduit pipe. A water ball valve is installed on end cap B in a sealed manner to release or add water into the conduit pipe.

[0012] It also includes a high-pressure vessel connected to the inlet and the outlet of the press. One end of the high-pressure vessel outlet is connected to a transformer test tube, and the other end of the transformer test tube is connected to end cap A and end cap B via pipelines through pressure testing valve A and pressure testing valve B, respectively.

[0013] The press machine is provided with a water inlet for adding water.

[0014] The press machine is provided with a pressure gauge for displaying pressure.

[0015] The high-pressure container is an elastically deformed container body or a rigid non-deformable container body.

[0016] The high-pressure container inlet is provided with a control valve A.

[0017] The high-pressure container inlet is connected and communicated with the press machine outlet through the control valve A.

[0018] The high-pressure container outlet is provided with a control valve B.

[0019] The high-pressure container outlet is connected and communicated with the pressure test pipe through the control valve B.

[0020] The beneficial effects of the present application are that the press machine pressurizes water and delivers the water to the inside of the guide pipe through the high-pressure water pipe, closes the pressure stabilizing valve to stabilize pressure after reaching a predetermined pressure, observes whether leakage occurs at the butt joint of the guide pipe screw joint on the guide pipe pipeline, and realizes the guide pipe pipeline leakproofness test under stable pressure; the high-pressure water body in the high-pressure container impacts into the guide pipe pipeline with a stable pressure state through the pressure test pipe to realize pressure impact on one end or both ends of the test guide pipe pipeline, realize the simulation of the pressure impact on the fluid flowing in the pipeline due to the change of the pipe diameter during construction, and solve the problem that the prior art cannot simulate the pressure impact on the fluid flowing in the pipeline due to the change of the pipe diameter during construction. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structural diagram of the present application Figure One ;

[0022] Figure 2 is a structural diagram of the present application Figure Two ;

[0023] In the figure: 1-press machine; 11-water inlet; 12-pressure gauge; 2-high-pressure water pipe; 3-pressure stabilizing valve; 4-head A; 5-guide pipe pipeline; 51-guide pipe screw joint; 6-head B; 7-water ball valve; 8-high-pressure container; 81-pressure test pipe; 82-pressure measuring valve A; 83-pressure measuring valve B; 87-control valve A; 88-control valve B. DETAILED DESCRIPTION

[0024] The technical solutions of the present application are further described below, but the scope of protection is not limited to the description.

[0025] As Figures 1-2 shown.

[0026] A guide pipe leakproofness test system according to the present application comprises:

[0027] The pressure machine 1 is provided with a water inlet 11 and a pressure gauge 12, and the pressure machine 1 adds water as a fluid from the water inlet 11 to increase the pressure; the pressure machine 1 is a prior art and will not be described in detail;

[0028] A high-pressure water pipe 2 is connected to the outlet of the pressure machine 1, and the other end of the high-pressure water pipe 2 is connected to a pressure stabilizing valve 3.

[0029] The pressure stabilizing valve 3 is hermetically connected to a head A 4, and the head A 4 is used to block one end of a conduit pipe 5.

[0030] The head B 6 is also included for blocking the other end of the conduit pipe 5, and a water ball valve 7 is hermetically connected to the head B 6 for discharging or adding water in the conduit pipe 5; the conduit pipe 5 is composed of a plurality of pipe sections connected by conduit screw joints 51.

[0031] In use, the head A 4 hermetically blocks the one end of the conduit pipe 5 with the pressure stabilizing valve 3 connected to the high-pressure water pipe 2, and the head B 6 hermetically blocks the other end of the conduit pipe 5 with the water ball valve 7, and the pressure machine 1 pressurizes the water and delivers it to the inside of the conduit pipe 5 through the high-pressure water pipe 2, and whether the conduit screw joints 51 on the conduit pipe 5 leak is observed to realize the leakproofness test of the conduit pipe 5 under stable pressure conditions.

[0032] The high-pressure container 8 is also included, and the inlet of the high-pressure container 8 is connected to the outlet of the pressure machine 1; the high-pressure container 8 can be an elastically deformable container body or a rigid non-deformable container body, etc., and one end of a pressure change test pipe 81 is connected to the outlet of the high-pressure container 8, and the other end of the pressure change test pipe 81 is connected to the head A 4 and the head B 6 through a pressure measuring valve A 82 and a pressure measuring valve B 83 through a pipe respectively. Control valves A 87 and B 88 are provided at the inlet and outlet of the high-pressure container 8, the inlet of the high-pressure container 8 is connected to the outlet of the pressure machine 1 through the control valve A 87, and the outlet of the high-pressure container 8 is connected to the pressure change test pipe 81 through the control valve B 88.

[0033] When the high-pressure water pipe 2 completes the stable pressure test process, the control valve A 87 is opened and the control valve B 88 is closed, and the pressure machine 1 pressurizes the water and stores it in the high-pressure container 8, and when it is necessary to test the pressure impact of one end or both ends of the conduit pipe 5, the corresponding pressure measuring valve A 82 and B 83 are opened first, and then the control valve B 88 is opened, and the high-pressure water in the high-pressure container 8 is impacted into the conduit pipe 5 with stable pressure to generate pressure impact, realizing the simulation of the pressure impact of fluid flowing in the pipe due to the change of pipe diameter during construction, solving the problem that the prior art cannot simulate the pressure impact of fluid flowing in the pipe due to the change of pipe diameter during construction. Whether the conduit screw joints 51 on the conduit pipe 5 leak is observed to realize the leakproofness test of the conduit pipe 5 under pressure impact conditions.

[0034] The conduit sealing test method of the present application comprises: based on the conduit sealing test system, realizing the sealing test process of the conduit pipeline 5 under the condition of realizing pressure stabilization or generating pressure impact.

[0035] Specifically, the head A4 seals and blocks one end port of the conduit pipeline 5, the head B6 seals and blocks the other end port of the conduit pipeline 5, the pressurizer 1 pressurizes water and delivers it to the inside of the conduit pipeline 5 through the high-pressure water pipe 2, after reaching the predetermined pressure, the pressure stabilizing valve 3 is closed to stabilize the pressure, and whether the butt joint of the conduit pipe thread joint 51 on the conduit pipeline 5 leaks is observed, realizing the sealing test of the conduit pipeline 5 under the condition of pressure stabilization.

[0036] During the pressure stabilization process, the control valve A87 is opened and the control valve B88 is closed, the pressurizer 1 pressurizes and stores water into the high-pressure container 8, after the corresponding pressure measuring valve A82 and the pressure measuring valve B83 are opened, the control valve B88 is opened, the high-pressure water body in the high-pressure container 8 is impacted into the inside of the conduit pipeline 5 which has the pressure stabilization state through the pressure change test pipe 81 to generate pressure impact, realizing the pressure impact of one end or both ends of the test conduit pipeline 5, realizing the simulation of the pressure impact of the fluid flowing in the pipeline due to the change of the pipe diameter during construction, solving the problem that the prior art cannot simulate the pressure impact of the fluid flowing in the pipeline due to the change of the pipe diameter during construction. Whether the butt joint of the conduit pipe thread joint 51 on the conduit pipeline 5 leaks is observed, realizing the sealing test of the conduit pipeline 5 under the condition of generating pressure impact.

[0037] The technology is derived from the application in the Longgui Lake project in Jiangxi Dingnan.

Claims

1. A method of testing the tightness of a conduit, characterized by, The utility model relates to a kind of pressure test system of conduit tightness, including: Based on the realization of pressure test system of conduit tightness to conduit pipeline (5) tightness test process under steady pressure or pressure impact condition; The pressure test system of conduit tightness, including: Water is added as fluid to pressure machine (1) for pressure increase; High-pressure water pipe (2), one end of high-pressure water pipe (2) is communicated with the water outlet of pressure machine (1), and the other end is communicated with steady pressure valve (3); Head A (4) for plugging the one end port of conduit pipeline (5), and steady pressure valve (3) is installed on head A (4) in airtight communication; Head B (6) for plugging the other end port of conduit pipeline (5), and water ball valve (7) is installed on head B (6) in airtight communication for discharging or adding water in conduit pipeline (5); It further includes high-pressure container (8) with the outlet of pressure machine (1) connected, and the outlet of high-pressure container (8) is communicated with one end of pressure test pipe (81), and the other end of pressure test pipe (81) is communicated on head A (4) and head B (6) through pressure measuring valve A (82) and pressure measuring valve B (83) respectively through pipeline; High-pressure water body in high-pressure container (8) is impacted into conduit pipeline (5) with steady pressure state itself through pressure test pipe (81) to generate pressure impact, realize the pressure impact of test conduit pipeline (5) both ends, realize the simulation that fluid flows in pipeline is subjected to pressure impact generated by pipe diameter change during construction.

2. The conduit tightness test method of claim 1, wherein: The pressure machine (1) has a water inlet (11) for adding water.

3. The conduit tightness test method of claim 1, wherein: The pressure machine (1) has a pressure gauge (12) for displaying pressure.

4. The conduit tightness test method of claim 1, wherein: The inlet of high-pressure container (8) is provided with control valve A (87).

5. The conduit tightness test method of claim 4, wherein: The inlet of high-pressure container (8) is connected to the outlet of pressure machine (1) through control valve A (87).

6. The conduit tightness test method of claim 1, wherein: The outlet of high-pressure container (8) has control valve B (88).

7. The conduit tightness test method of claim 6, wherein: The outlet of high-pressure container (8) is connected to pressure test pipe (81) through control valve B (88).

Images