CN113899507A - Pipeline component testing method for intelligent micro-pipe network ecological chain - Google Patents
Pipeline component testing method for intelligent micro-pipe network ecological chain Download PDFInfo
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- CN113899507A CN113899507A CN202111099003.1A CN202111099003A CN113899507A CN 113899507 A CN113899507 A CN 113899507A CN 202111099003 A CN202111099003 A CN 202111099003A CN 113899507 A CN113899507 A CN 113899507A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2807—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes
- G01M3/2815—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes using pressure measurements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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Abstract
The invention relates to a method for testing a pipeline assembly for an intelligent micro-pipe network ecological chain, wherein the pipeline assembly comprises a natural gasification pipeline and a forced gasification pipeline; the pipeline component testing method comprises the following steps: step one, a test gas path is arranged; step two, closing the preposed pipelines of the test pipeline a and the test pipeline b, and adjusting the gas outlet pressure of the nitrogen cylinder to a test value; leading pipelines of the test pipeline a and the test pipeline b to be conducted, and enabling the pressure of the leading pipelines of the test pipeline a and the test pipeline b to reach a test value; and step three, testing the cutting performance of the pipeline assembly. The testing method can effectively test the cutting performance and the like of the pipeline assembly, and further can effectively verify whether each parameter of the pipeline assembly is normal or not so as to ensure the reliability and stability of a product, improve the gas using experience of a user and ensure the gas using safety of the user.
Description
Technical Field
The invention relates to the technical field of fuel gas supply equipment, in particular to a pipeline assembly testing method for an intelligent micro-pipe network ecological chain.
Background
The small-size storage tank air supply system under the little pipe network of intelligence liquefied petroleum gas (for short "intelligent little pipe network") ecological chain is important component, and this small-size storage tank air supply system includes: the device comprises a small storage tank component, an intrinsic safety component, a gasification pressure regulating component, an electrical monitoring and collecting component, a local interlocking control component, a remote communication component and related accessories. In current 1m and 2m big fruit of thin. The pressure and flow regulation stability of the forced gasification pipeline system is critical to the forced gasification small storage tank gas supply system, and the pressure, flow and gas tightness of the forced gasification pipeline system are necessarily verified to ensure the reliability and stability of products and ensure the gas use safety of users.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a pipeline component testing method for an intelligent micro-pipe network ecological chain.
The purpose of the invention is realized as follows:
a method for testing a pipeline assembly for an intelligent micro-pipe network ecological chain is disclosed, wherein the pipeline assembly comprises a natural gasification pipeline and a forced gasification pipeline; the pipeline component testing method comprises the following steps:
step one, setting a test gas path: connecting the air inlet end of the forced gasification pipeline with the preposed pipeline of the test pipeline a, and connecting the air outlet end with the air outlet end of the natural gasification pipeline; connecting the air inlet end of the natural gasification pipeline with the prepositive pipeline of the test pipeline b, and connecting the air outlet end with the postpositive pipeline of the test pipeline b; connecting a nitrogen cylinder for auxiliary test with a preposed pipeline of a test pipeline and a test pipeline b; the rear pipeline of the test pipeline b is connected with an exhaust valve for exhausting test gas;
step two, closing the preposed pipelines of the test pipeline a and the test pipeline b, and adjusting the gas outlet pressure of the nitrogen cylinder to a test value; conducting the prepositive pipelines of the test pipeline a and the test pipeline b, enabling the pressure of the prepositive pipelines of the test pipeline a and the test pipeline b to reach a test value, and detecting whether the test gas circuit leaks or not;
step three, setting the opening of an exhaust valve: closing the prepositive pipelines of the test pipeline a and the test pipeline b, and opening a nitrogen bottle to supply air so that the prepositive pipelines of the test pipeline a and the test pipeline b are filled with nitrogen; conducting the prepositive pipelines of the test pipeline a and the test pipeline b until the air pressure in the prepositive pipelines of the test pipeline a and the test pipeline b reaches 0.8 MPa; opening and adjusting an exhaust valve, and enabling nitrogen to start flowing on a test gas path; when the pressure and the flow in the gas path to be tested are respectively stabilized at corresponding set values, stopping adjusting the exhaust valve, and making a positioning mark on the real-time opening of the exhaust valve; then a testing pipeline and b testing pipeline;
step four, testing the cutting performance of the pipeline assembly: communicating the air inlet end of the natural gasification pipeline, recording a static pressure value, and communicating the air outlet end of the natural gasification pipeline and the forced reinforcement pipeline to enable the pressure to reach a set value 4KPa required by the test; then closing the air inlet end of the natural gasification pipeline, and observing the pressure of the front pipeline of the test pipeline: if the pressure is stable and does not drop, verifying that the natural gasification pipeline can be completely closed and cut off by forcing the high working pressure of the gasification pipeline under the working state at the moment; if the pressure is reduced, verifying that the working pressure of the forced gasification pipeline can not close the natural gasification pipeline under the working state at the moment;
and closing the air inlet end of the forced gasification pipeline and/or the natural gasification pipeline so as to finish verifying the cutting-off performance of the pipeline assembly when the pressure test value of the storage tank is verified.
A first air inlet valve for controlling the conduction or the cutoff of the air inlet end of the forced gasification pipeline and a first air inlet pressure gauge for detecting the pressure of the air inlet end of the forced gasification pipeline are sequentially arranged on the preposed pipeline of the test pipeline a from the nitrogen cylinder to the air inlet end of the forced gasification pipeline;
a second air inlet valve for controlling the connection or disconnection of the air inlet end of the natural gasification pipeline and a second air inlet pressure gauge for detecting the pressure of the air inlet end of the natural gasification pipeline are sequentially arranged on the preposed pipeline of the test pipeline b from the nitrogen cylinder to the air inlet end of the natural gasification pipeline;
the nitrogen cylinder is connected with the preposed pipelines of the test pipeline a and the test pipeline b through a nitrogen control valve for controlling whether the nitrogen cylinder supplies air or not.
And b, an air outlet pressure gauge for detecting the pressure of the air outlet end of the natural gasification pipeline and an air outlet valve for controlling the air outlet end of the natural gasification pipeline to be conducted or cut off are sequentially arranged on the rear pipeline of the test pipeline from the air outlet end of the natural gasification pipeline to the air outlet end of the test air circuit.
The nitrogen cylinder is provided with a nitrogen valve for opening or closing the air outlet end of the nitrogen cylinder and a nitrogen pressure regulator for regulating the air outlet pressure of the nitrogen cylinder; the nitrogen cylinder sets up more than one or two, and the nitrogen cylinder is connected through the manifold of admitting air each other parallel connection more than two, be provided with on the manifold of admitting air the nitrogen control valve and be used for detecting the leading manometer of manifold pressure of admitting air, the manifold of admitting air connects first air inlet valve and second air inlet valve.
Based on the test gas circuit, the test method specifically comprises the following steps:
closing the preposed pipelines of the test pipeline a and the test pipeline b through the nitrogen control valve, and adjusting the gas outlet pressure of the nitrogen cylinder to a test value through a nitrogen pressure regulator; and leading pipelines of the test pipeline a and the test pipeline b are conducted through a nitrogen control valve, so that the leading pipeline pressures of the test pipeline a and the test pipeline b reach test values.
Step three, setting the opening of an exhaust valve: closing the nitrogen control valve, starting the nitrogen pressure regulator to supply gas, filling nitrogen into the preposed pipelines of the test pipeline a and the test pipeline b, and closing the nitrogen pressure regulator; opening a nitrogen control valve to enable the air pressure of the preposed pipelines of the test pipeline a and the test pipeline b to reach 0.8 MPa; opening and adjusting an exhaust valve, and enabling nitrogen to start flowing on a test gas path; and b, stopping adjusting the exhaust valve when the pressure value on the rear pipeline of the test pipeline b is stabilized at the set 4kPa and the flow value is stabilized at the set 20 Nm/h, and performing positioning identification on the real-time opening of the exhaust valve.
Step four, testing the cutting performance of the pipeline assembly: the air inlet end of the natural gasification pipeline is communicated through a second air inlet valve, a static pressure value is recorded, and the air outlet end of the natural gasification pipeline and the air outlet end of the forced gasification pipeline are communicated through an air outlet valve, so that the pressure reaches a set value 4KPa required by the test; the second air inlet valve closes the air inlet end of the natural gasification pipeline, and the second air inlet pressure gauge is used for observing the pressure of the front pipeline of the test pipeline b: if the pressure is stable and does not drop, verifying that the working pressure of the forced gasification pipeline can completely close and cut off the natural gasification pipeline under the working state at the moment; and if the pressure is reduced, verifying that the working pressure of the forced gasification pipeline can not close the natural gasification pipeline under the working state at the moment.
The test value is 0.6-0.8 MPa; and repeating the second step, the third step and the fourth step to test the cutting performance of the pipeline assembly under different test values.
The test method also comprises a fifth step; step five, closing the nitrogen cylinder and making a used mark; opening valves on the test gas path to discharge all nitrogen to the outside; and disassembling the tested pipeline assembly and sorting the test records.
The natural gasification pipeline comprises a high-pressure regulator and a low-pressure regulator which are sequentially arranged along the flow direction of the test gas; the air inlet end of the high-pressure regulator is connected with the preposed pipeline of the test pipeline b, the air outlet end of the high-pressure regulator is connected with the air inlet end of the low-pressure regulator, and the air outlet end of the low-pressure regulator is connected with the postposition pipeline of the test pipeline b; and the air outlet end of the forced gasification pipeline is connected between the high-pressure regulator and the low-pressure regulator through a three-way joint.
The invention has the following beneficial effects:
the testing method can effectively test the cutting performance and the like of the pipeline assembly, and further can effectively verify whether each parameter of the pipeline assembly is normal or not so as to ensure the reliability and stability of a product, improve the gas using experience of a user and ensure the gas using safety of the user.
Drawings
Fig. 1 is a schematic diagram of a test gas circuit in an embodiment of the invention.
Detailed Description
The invention is further described with reference to the following figures and examples.
Referring to fig. 1, the present embodiment relates to a piping assembly including a natural gasification pipe 11 and a forced gasification pipe 10; the pipeline component testing method comprises the following steps:
step one, setting a test gas path: connecting the air inlet end of the forced gasification pipeline 10 with the preposed pipeline of the test pipeline a, and connecting the air outlet end with the air outlet end of the natural gasification pipeline 11; connecting the air inlet end of the natural gasification pipeline 11 with a preposed pipeline of the test pipeline b, and connecting the air outlet end with a postposition pipeline of the test pipeline b; connecting a nitrogen cylinder 1 for auxiliary test with a preposed pipeline of a test pipeline and a test pipeline b; b, the rear pipeline of the test pipeline is connected with an exhaust valve 18 for exhausting test gas;
step two, closing the preposed pipelines of the test pipeline a and the test pipeline b, and adjusting the gas outlet pressure of the nitrogen cylinder 1 to a test value; conducting the prepositive pipelines of the test pipeline a and the test pipeline b, enabling the pressure of the prepositive pipelines of the test pipeline a and the test pipeline b to reach a test value, and detecting whether the test gas circuit leaks or not;
step three, setting the opening of the exhaust valve 18: closing the prepositive pipelines of the test pipeline a and the test pipeline b, and opening the nitrogen cylinder 1 to supply gas so that the prepositive pipelines of the test pipeline a and the test pipeline b are filled with nitrogen; conducting the prepositive pipelines of the test pipeline a and the test pipeline b until the air pressure in the prepositive pipelines of the test pipeline a and the test pipeline b reaches 0.8 MPa; opening and adjusting the exhaust valve 18, and starting to flow nitrogen on the test gas path; when the pressure and the flow in the gas path to be tested are respectively stabilized at corresponding set values, stopping adjusting the exhaust valve 18, and making a positioning mark on the real-time opening of the exhaust valve 18; then a testing pipeline and b testing pipeline;
step four, testing the cutting performance of the pipeline assembly: communicating the air inlet end of the natural gasification pipeline 11, recording a static pressure value, and communicating the air outlet ends of the natural gasification pipeline 11 and the forced gasification pipeline 10 to enable the pressure to reach a set value 4KPa required by the test; then closing the air inlet end of the natural gasification pipeline 11, and observing the pressure of the front pipeline of the test pipeline b: if the pressure is stable and does not drop, verifying that the natural gasification pipeline 11 can be completely closed and cut off by the high working pressure of the forced gasification pipeline 10 in the working state at the moment; if the pressure drops, verifying that the working pressure of the forced gasification pipeline 10 can not close the natural gasification pipeline 11 under the working state at the moment;
and closing the air inlet end of the forced gasification pipeline 10, thereby finishing verifying the cutting performance of the pipeline assembly when the pressure test value of the storage tank is tested.
The testing method can effectively test the cutting performance and the like of the pipeline assembly, and further can effectively verify whether each parameter of the pipeline assembly is normal or not so as to ensure the reliability and stability of a product, improve the gas using experience of a user and ensure the gas using safety of the user.
Further, the air conditioner is provided with a fan,
the test gas circuit is as follows:
a, a first air inlet valve 4 for controlling the conduction or the cutoff of the air inlet end of the forced gasification pipeline 10 and a first air inlet pressure gauge 5 for detecting the pressure of the air inlet end of the forced gasification pipeline 10 are sequentially arranged on a preposed pipeline of a test pipeline from a nitrogen gas cylinder 1 to the air inlet end of the forced gasification pipeline 10; b, a second air inlet valve 4 'for controlling the connection or disconnection of the air inlet end of the natural gasification pipeline 11 and a second air inlet pressure gauge 5' for detecting the pressure of the air inlet end of the natural gasification pipeline 11 are sequentially arranged on the preposed pipeline of the test pipeline from the nitrogen cylinder 1 to the air inlet end of the natural gasification pipeline 11. The nitrogen cylinder 1 is connected with the preposed pipelines of the test pipeline a and the test pipeline b through a nitrogen control valve 6 for controlling whether the nitrogen cylinder 1 supplies air or not. b, an air outlet pressure gauge 13 for detecting the pressure of the air outlet end of the natural gasification pipeline 11 and an air outlet valve 12 for controlling the conduction or the cut of the air outlet end of the natural gasification pipeline 11 are sequentially arranged on the rear pipeline of the test pipeline from the air outlet end of the natural gasification pipeline 11 to the air outlet end of the test air circuit. The nitrogen cylinder 1 is provided with a nitrogen valve 7 for opening or closing the air outlet end of the nitrogen cylinder 1 and a nitrogen pressure regulator 8 for regulating the air outlet pressure of the nitrogen cylinder 1; the device comprises a nitrogen gas cylinder 1, an air inlet manifold 2, a nitrogen gas control valve 6, a preposed pressure gauge 3 and a first air inlet valve 4, wherein the nitrogen gas cylinder 1 is arranged at one or more than two, the two nitrogen gas cylinders 1 are connected in parallel with each other through the air inlet manifold 2, the air inlet manifold 2 is provided with the nitrogen gas control valve 6 and the preposed pressure gauge 3 for detecting the pressure of the air inlet manifold 2, and the air inlet manifold 2 is connected with the first air inlet valve 4 and the second air inlet valve 4'; and a flow meter 17 for detecting the nitrogen flow and an exhaust valve 18 for controlling the on-off of the exhaust end are arranged on the exhaust end of the test gas circuit.
The natural gasification pipeline 11 comprises a high-pressure regulator 1101 and a low-pressure regulator 1102 which are sequentially arranged along the flow direction of the test gas; the air inlet end of the high-pressure regulator 1101 is connected with the preposed pipeline of the test pipeline b, the air outlet end of the high-pressure regulator 1101 is connected with the air inlet end of the low-pressure regulator 1102, and the air outlet end of the low-pressure regulator 1102 is connected with the postposition pipeline of the test pipeline b; the air outlet end of the forced gasification pipeline 10 is connected between the high-pressure regulator 1101 and the low-pressure regulator 1102 through a three-way joint 15.
Further, the air conditioner is provided with a fan,
based on the test gas circuit, the test method specifically comprises the following steps:
step one, setting a test gas path: the gas inlet end of the forced gasification pipeline 10 is connected with the preposed pipeline of the test pipeline a, and the gas outlet end is connected with the gas outlet end of the natural gasification pipeline 11 through a three-way joint 15; connecting the air inlet end of the natural gasification pipeline 11 with a preposed pipeline of the test pipeline b, and connecting the air outlet end with a postposition pipeline of the test pipeline b; connecting a nitrogen cylinder 1 for auxiliary test with a preposed pipeline of a test pipeline and a test pipeline b; setting the opening degree of a nitrogen pressure regulator 8 to control the outlet pressure of the nitrogen cylinder 1, and setting the inlet pressure of the inlet end of the natural gasification pipeline to be 0.8 MPa;
step two, closing the preposed pipelines of the test pipeline a and the test pipeline b through a nitrogen control valve 6, and adjusting the gas outlet pressure of a nitrogen bottle 1 to 0.6MPa (or 0.8MPa according to the test requirement) through a nitrogen pressure regulator 8; then, slowly communicating the preposed pipelines of the test pipeline a and the test pipeline b through a nitrogen control valve 6, and continuously observing a preposed pressure gauge 3 to ensure that the pressure of the preposed pipelines of the test pipeline a and the test pipeline b reaches 0.6MPa (or 0.8MPa according to the test requirement);
step three, setting the opening of the exhaust valve 18: closing the nitrogen control valve 6, slowly opening the nitrogen pressure regulator 8 to supply gas from the nitrogen cylinder 1, filling nitrogen into the preposed pipelines of the test pipeline a and the test pipeline b, and closing the nitrogen pressure regulator 8; slowly opening the nitrogen control valve 6, and continuously observing the preposed pressure gauge 3 to ensure that the air pressure of the preposed pipelines of the test pipeline a and the test pipeline b reaches 0.8 MPa; slowly opening and adjusting an exhaust valve 18, starting the flow of nitrogen on a test gas path, and observing an exhaust gas pressure gauge 13 and a flowmeter 17; b, stopping adjusting the exhaust valve 18 when the pressure value on the rear pipeline of the test pipeline b is stabilized at the set 4kPa and the flow value is stabilized at the set 20 Nm/h, and performing positioning identification on the real-time opening of the exhaust valve 18; then the first inlet valve 4, the second inlet valve 4' and the outlet valve 12 are closed, and the pressure reading of the outlet pressure gauge 13 is zero;
step four, testing the cutting performance of the pipeline assembly: slowly communicating the air inlet end of the natural gasification pipeline 11 through a second air inlet valve 4 ', observing the pressure detected by a second air inlet pressure gauge 5', and recording a static pressure value; slowly communicating the air outlet ends of the natural gasification pipeline 11 and the forced gasification pipeline 10 through an air outlet valve 12, starting to flow nitrogen in a test air path, and observing the pressure detected by an air outlet pressure gauge 13 so as to control the air outlet pressure to reach a set value 4KPa required by the content of a test report; then the air inlet end of the natural gasification pipeline 11 is closed through a second air inlet valve 4 ', and the pressure of the front pipeline of the test pipeline b is observed through a second air inlet pressure gauge 5': if the pressure is stable and does not drop, verifying that the working pressure of the forced gasification pipeline 10 can completely close and cut off the natural gasification pipeline 11 in the working state at the moment; if the pressure drops, verifying that the working pressure of the forced gasification pipeline 10 can not close the natural gasification pipeline 11 under the working state at the moment; the air inlet end of the forced gasification pipeline 10 is closed through the first air inlet valve 4, the air inlet end of the natural gasification pipeline 11 is closed through the second air inlet valve 4', the pressure of the exhaust end of the test pipeline is zero, and therefore the cutting-off performance of the pipeline assembly when the pressure test value of the storage tank is verified is completed.
Step five, closing the nitrogen cylinder 1 and making a used mark; opening valves on the test gas path to discharge all nitrogen to the outside; and disassembling the tested pipeline assembly and sorting the test records.
The foregoing is a preferred embodiment of the present invention, and the basic principles, principal features and advantages of the invention are shown and described. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to illustrate the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, and the invention is intended to be protected by the following claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A pipeline assembly testing method for an intelligent micro-pipe network ecological chain is disclosed, wherein the pipeline assembly comprises a natural gasification pipeline (11) and a forced gasification pipeline (10); the method is characterized in that: the pipeline component testing method comprises the following steps:
step one, setting a test gas path: the gas inlet end of the forced gasification pipeline (10) is connected with the preposed pipeline of the test pipeline a, and the gas outlet end is connected with the natural gasification pipeline (11); connecting the air inlet end of the natural gasification pipeline (11) with the preposed pipeline of the test pipeline b, and connecting the air outlet end with the postposition pipeline of the test pipeline b; connecting a nitrogen cylinder (1) for auxiliary test with a preposed pipeline of a test pipeline and a test pipeline b; the rear pipeline of the test pipeline b is connected with an exhaust valve (18) for exhausting test gas;
step two, closing the preposed pipelines of the test pipeline a and the test pipeline b, and adjusting the gas outlet pressure of the nitrogen cylinder (1) to a test value; leading pipelines of the test pipeline a and the test pipeline b to be conducted, and enabling the pressure of the leading pipelines of the test pipeline a and the test pipeline b to reach a test value;
step three, setting the opening degree of an exhaust valve (18): closing the prepositive pipelines of the test pipeline a and the test pipeline b, and opening a nitrogen bottle (1) to supply air so that the prepositive pipelines of the test pipeline a and the test pipeline b are filled with nitrogen; conducting the prepositive pipelines of the test pipeline a and the test pipeline b until the air pressure in the prepositive pipelines of the test pipeline a and the test pipeline b reaches 0.8 MPa; opening and adjusting an exhaust valve (18), and enabling nitrogen to start flowing on the test gas circuit; when the pressure and the flow in the gas path to be tested are respectively stabilized at corresponding set values, stopping adjusting the exhaust valve (18), and making a positioning mark on the real-time opening of the exhaust valve (18); then a testing pipeline and b testing pipeline;
step four, testing the cutting performance of the pipeline assembly: the air inlet end of the natural gasification pipeline (11) is communicated, the static pressure value is recorded, and the air outlet end of the natural gasification pipeline (11) and the air outlet end of the forced gasification pipeline (10) are communicated to enable the pressure to reach the set value 4KPa required by the test; then closing the air inlet end of the natural gasification pipeline (11), and observing the pressure of the front pipeline of the test pipeline: if the pressure is stable and does not drop, verifying that the high working pressure of the forced gasification pipeline (10) can completely close and cut off the natural gasification pipeline (11) in the working state at the moment; if the pressure is reduced, verifying that the working pressure of the forced gasification pipeline (10) can not close the natural gasification pipeline (11) under the working state at the moment;
and closing the air inlet end of the forced gasification pipeline (10) and/or the natural gasification pipeline (11) so as to finish verifying the cutting performance of the pipeline assembly when the pressure test value of the storage tank is tested.
2. The pipe assembly testing method of claim 1, wherein:
a first air inlet valve (4) for controlling the conduction or the cutoff of the air inlet end of the forced gasification pipeline (10) and a first air inlet pressure gauge (5) for detecting the pressure of the air inlet end of the forced gasification pipeline (10) are sequentially arranged on the preposed pipeline of the test pipeline a from the nitrogen gas bottle (1) to the air inlet end of the forced gasification pipeline (10);
a second air inlet valve (4 ') for controlling the opening or the closing of the air inlet end of the natural gasification pipeline (11) and a second air inlet pressure gauge (5') for detecting the pressure of the air inlet end of the natural gasification pipeline (11) are sequentially arranged on the preposed pipeline of the test pipeline b from the nitrogen gas bottle (1) to the air inlet end of the natural gasification pipeline (11);
the nitrogen cylinder (1) is connected with the preposed pipelines of the test pipeline a and the test pipeline b through a nitrogen control valve (6) for controlling whether the nitrogen cylinder (1) supplies air or not.
3. The pipe assembly testing method of claim 2, wherein: and b, on the rear pipeline of the test pipeline, an air outlet pressure gauge (13) for detecting the pressure of the air outlet end of the natural gasification pipeline (11) and an air outlet valve (12) for controlling the air outlet end of the natural gasification pipeline (11) to be conducted or cut off are sequentially arranged from the air outlet end of the natural gasification pipeline (11) to the air outlet end of the test air circuit.
4. The pipe assembly testing method of claim 3, wherein: the nitrogen cylinder (1) is provided with a nitrogen valve (7) for opening or closing the air outlet end of the nitrogen cylinder (1) and a nitrogen pressure regulator (8) for regulating the air outlet pressure of the nitrogen cylinder (1); nitrogen cylinder (1) sets up one or more than two, and nitrogen cylinder (1) are connected in parallel each other through intake manifold (2) more than two, be provided with on intake manifold (2) nitrogen control valve (6) and be used for detecting leading manometer (3) of intake manifold (2) pressure, first air inlet valve (4) and second air inlet valve (4') are connected in intake manifold (2).
5. The pipe assembly testing method of claim 4, wherein:
closing the preposed pipelines of the test pipeline a and the test pipeline b through the nitrogen control valve (6), and adjusting the gas outlet pressure of the nitrogen cylinder (1) to a test value through a nitrogen pressure regulator (8); the prepositive pipelines of the test pipeline a and the test pipeline b are conducted through a nitrogen control valve (6), so that the pressure of the prepositive pipelines of the test pipeline a and the test pipeline b reaches a test value.
6. The pipe assembly testing method of claim 4, wherein:
step three, setting the opening degree of an exhaust valve (18): closing the nitrogen control valve (6), starting the nitrogen pressure regulator (8) to supply gas, filling nitrogen into the preposed pipelines of the test pipeline a and the test pipeline b, and closing the nitrogen pressure regulator (8); opening a nitrogen control valve (6) to enable the air pressure of the preposed pipelines of the test pipeline a and the test pipeline b to reach 0.8 MPa; opening and adjusting an exhaust valve (18), and enabling nitrogen to start flowing on the test gas circuit; and b, stopping adjusting the exhaust valve (18) when the pressure value on the rear pipeline of the test pipeline b is stabilized at the set 4kPa and the flow value is stabilized at the set 20 Nm/h, and performing positioning identification on the real-time opening of the exhaust valve (18).
7. The pipe assembly testing method of claim 4, wherein:
step four, testing the cutting performance of the pipeline assembly: the air inlet end of the natural gasification pipeline (11) is communicated through a second air inlet valve (4'), a static pressure value is recorded, and the air outlet end of the natural gasification pipeline (11) and the air outlet end of the forced gasification pipeline (10) are communicated through an air outlet valve (12) to enable the pressure to reach a set value 4KPa required by the test; and then closing the air inlet end of the natural gasification pipeline (11) through a second air inlet valve (4 '), and observing the pressure of a front pipeline of the test pipeline b through a second air inlet pressure gauge (5'): if the pressure is stable and does not drop, verifying that the working pressure of the forced gasification pipeline (10) can completely close and cut off the natural gasification pipeline (11) in the working state at the moment; if the pressure drops, the working pressure of the forced gasification pipeline (10) can not close the natural gasification pipeline (11) under the working state at the moment is verified.
8. The pipe assembly testing method of claim 1, wherein: the test value is 0.6-0.8 MPa; and repeating the second step, the third step and the fourth step to test the cutting performance of the pipeline assembly under different test values.
9. The pipe assembly testing method of claim 1, wherein: further comprises a fifth step; step five, closing the nitrogen cylinder (1) and making a used mark; opening valves on the test gas path to discharge all nitrogen to the outside; and disassembling the tested pipeline assembly and sorting the test records.
10. The pipe assembly testing method according to any one of claims 1 to 9, wherein: the natural gasification pipeline (11) comprises a high-pressure regulator (1101) and a low-pressure regulator (1102) which are sequentially arranged along the flow direction of the test gas; the air inlet end of the high-pressure regulator (1101) is connected with the preposed pipeline of the test pipeline b, the air outlet end of the high-pressure regulator is connected with the air inlet end of the low-pressure regulator (1102), and the air outlet end of the low-pressure regulator (1102) is connected with the postposition pipeline of the test pipeline b; the air outlet end of the forced gasification pipeline (10) is connected between the high-pressure regulator (1101) and the low-pressure regulator (1102) through a three-way joint (15).
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| CN202111099003.1A CN113899507B (en) | 2021-09-18 | 2021-09-18 | Pipeline assembly testing method for intelligent micro-pipe network ecological chain |
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| CN202111099003.1A CN113899507B (en) | 2021-09-18 | 2021-09-18 | Pipeline assembly testing method for intelligent micro-pipe network ecological chain |
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