CN104614253A - Heat exchange unit pressure test equipment and pressure test method - Google Patents
Heat exchange unit pressure test equipment and pressure test method Download PDFInfo
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- CN104614253A CN104614253A CN201510098331.8A CN201510098331A CN104614253A CN 104614253 A CN104614253 A CN 104614253A CN 201510098331 A CN201510098331 A CN 201510098331A CN 104614253 A CN104614253 A CN 104614253A
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Abstract
The invention discloses heat exchange unit pressure test equipment and a pressure test method, belongs to the field of heat exchange unit pressure tests, and aims to solve the problem of errors caused by manual control of an existing heat exchange unit pressure test pump. A water tank can guarantee an enough water source in a pressure test process, and then the pressure test unit is filled with water by a water filling pump, a water filling valve and a return water header; after the pressure test unit is full filled with water, a pressurizing header starts to realize pressurization till test pressure is reached; after the pressure test is finished, a water return pump is used for pumping water into a water return tank. According to the heat exchange unit pressure test equipment, the unit can be quickly filled with water and subjected to pressurization and pressure release; the pressure test period is shortened; furthermore, all the operations are electrically controlled, and the error is reduced. Pressure test water is cyclically used, so that the heat exchange unit pressure test equipment is energy-saving and environment-friendly; waste of water resources is reduced; meanwhile, the pressure test device can simultaneously realize multi-path water filling and pressurization, and the working efficiency is improved.
Description
Technical field
The invention belongs to heat-exchange unit pressure testing field, particularly relate to heat-exchange unit pressure testing equipment.
Background technology
Unit after mainly equipment fills water by water tank, then is boosted to test pressure by force (forcing) pump by current motor test pump.Unit water filling, boosting situation to be observed by special messenger, often when pressure is raised to test pressure soon, because the speed of boosting inertia and person's development speed affects test pressure, superpressure sometimes, damage equipment when unit water filling, pressure testing.Because the weight of unit carrying water is generally (2 ~ 3 tons, waterflood injection rate is slow, the time is long, affects delivery cycle.Can only be observed the pressure change of pressure testing equipment between hold period by tensimeter, there is reading error, test data sheet is inaccurate.Also pressure testing water to be discharged after unit pressure testing completes.
Summary of the invention
The present invention is to solve existing heat-exchange unit test pump by manual control, there is the problem of error, now provide heat-exchange unit pressure testing equipment and pressure-measuring method.
Heat-exchange unit pressure testing equipment, it comprises: water tank, the header that boosts, fill backwater header, charging pump, booster, back water pump, filling valve, back-up valve, back-water valve (BWV), at least one road fill backwater path, the identical back pressure path of at least two line structures, a pressure transducer and No. two pressure transducer controllers and flowmeter;
The water delivering orifice of water tank is communicated with the water inlet filling backwater header with the water inlet of boosting header simultaneously, and charging pump and filling valve are all at water tank and on filling between backwater header path, and booster and back-up valve are all on water tank and the path that boosts between header;
The water return outlet of water tank is communicated with the water return outlet filling backwater header, and back water pump and back-water valve (BWV) are all at water tank and on filling between backwater header path;
The back pressure mouth of water tank is communicated with, on the path of flowmeter between this back pressure path and water tank by the back pressure mouth of at least one road back pressure path with boosting header;
Fill backwater path to be provided with and to fill backwater solenoid valve, back pressure path is provided with two boosting solenoid valves, is provided with pressure testing unit connector between these two boosting solenoid valves;
A water inlet of pressure testing unit is communicated with the header that boosts by the pressure testing unit connector of a road back pressure path, and another water inlet of pressure testing unit is filled backwater path by a road and filled backwater header and be communicated with;
A pressure transducer is for gathering the pressure in boosting header; No. two pressure transducers are for gathering the pressure filled in backwater header;
Controller is for controlling charging pump, booster, back water pump, filling valve, back-up valve, back-water valve (BWV), all break-makes of filling the boosting solenoid valve on backwater solenoid valve and all back pressure paths of filling on backwater path respectively, controller is used for the flow of acquisition stream gauge, and controller is also for the pressure signal of the pressure signal and No. two pressure transducers that gather a pressure transducer.
Heat-exchange unit pressure-measuring method, the method realizes based on following apparatus, and described device comprises: water tank, the header that boosts, fill backwater header, charging pump, booster, back water pump, filling valve, back-up valve, back-water valve (BWV), at least one road fill backwater path, the identical back pressure path of at least two line structures and flowmeter;
The water delivering orifice of water tank is communicated with the water inlet filling backwater header with the water inlet of boosting header simultaneously, and charging pump and filling valve are all at water tank and on filling between backwater header path, and booster and back-up valve are all on water tank and the path that boosts between header;
The water return outlet of water tank is communicated with the water return outlet filling backwater header, and back water pump and back-water valve (BWV) are all at water tank and on filling between backwater header path;
The back pressure mouth of water tank is communicated with, on the path of flowmeter between this back pressure path and water tank by the back pressure mouth of at least one road back pressure path with boosting header;
Fill backwater path to be provided with and to fill backwater solenoid valve, back pressure path is provided with two boosting solenoid valves, is provided with pressure testing unit connector between these two boosting solenoid valves;
A water inlet of pressure testing unit is communicated with the header that boosts by the pressure testing unit connector of a road back pressure path, and another water inlet of pressure testing unit is filled backwater path by a road and filled backwater header and be communicated with;
Described heat-exchange unit pressure-measuring method comprises the following steps:
Equipment water-filling step: open charging pump, backwater path fills boosting solenoid valve adjacent with water tank on back pressure path that backwater solenoid valve and the header that boosts be communicated with pressure testing unit filling valve, filling of being communicated with pressure testing unit, whether acquisition stream gauge has water-flow signal, has, and closes charging pump, backwater path fills backwater solenoid valve and boost header and the boosting solenoid valve adjacent with water tank on the back pressure path of boosting header filling valve, filling of being communicated with pressure testing unit;
Boosting header water-filling step: after equipment water-filling, open booster, back-up valve and two boosting solenoid valves on all back pressure paths be not communicated with pressure testing unit, whether acquisition stream gauge has water-flow signal, has, and closes the boosting solenoid valve on all back pressure paths of not being communicated with pressure testing unit;
Pressurization steps: after boosting header water-filling, boosting solenoid valve adjacent with boosting header on the back pressure path that unlatching boosting header is communicated with pressure testing unit, gather the pressure in boosting header, when reaching test pressure, boosting solenoid valve adjacent with boosting header on the back pressure path that closedown booster, back-up valve and boosting header are communicated with pressure testing unit;
Pressure holding step: record dwell time, and gather the force value in pressure maintaining period pilot press group.
In steps after, open back-water valve (BWV) and backwater path fills backwater solenoid valve for filling of being communicated with pressure testing unit, when pressure in pressure testing unit is identical with the pressure filled in backwater header, boosting solenoid valve adjacent with water tank on the back pressure path that unlatching is communicated with pressure testing unit, delayed start-up back water pump again, makes in pressure testing unit and fills water unnecessary in backwater header to flow back to water tank.
Heat-exchange unit pressure testing equipment of the present invention and pressure-measuring method, can give unit water-filling, pressurization, pressure release fast, shortens the pressure testing cycle, and all by electrical control, reduce error.Recycle pressure testing water, energy-conserving and environment-protective, decrease the waste of water resource, this pressure testing device multichannel water-filling, pressurization can improve work efficiency simultaneously simultaneously.The present invention can be applied to heat-exchange unit and do strength test, leakage test, leakage test, check weld seam welding quality large between pipeline and pipe fitting, and working range is test pressure P≤2.5MPa.
Accompanying drawing explanation
Fig. 1 is the structural representation of the mechanical part of heat-exchange unit pressure testing equipment of the present invention;
Fig. 2 is the structural representation of the electric part of heat-exchange unit pressure testing equipment of the present invention.
Embodiment
Embodiment one: see figures.1.and.2 and illustrate present embodiment, heat-exchange unit pressure testing equipment described in present embodiment, it comprises: water tank 1, boosting header 2, fill backwater header 3, the identical back pressure path of backwater path 5, at least two line structure 6, pressure transducer 7 is filled on charging pump B1, booster B2, back water pump B3, filling valve MV1, back-up valve MV2, back-water valve (BWV) MV3, at least one road and No. two pressure transducer 8 controllers 9 and flowmeter 10;
The water delivering orifice of water tank 1 is communicated with the water inlet filling backwater header 3 with the water inlet of boosting header 2 simultaneously, charging pump B1 and filling valve MV1 all at water tank 1 and on filling between backwater header 3 path, on the path of booster B2 and back-up valve MV2 all between water tank 1 and boosting header 2;
The water return outlet of water tank 1 is communicated with the water return outlet filling backwater header 3, and back water pump B3 and back-water valve (BWV) MV3 is all at water tank 1 and on filling between backwater header 3 path;
The back pressure mouth of water tank 1 is communicated with, on the path of flowmeter 10 between this back pressure path 6 and water tank 1 by the back pressure mouth of at least one road back pressure path 6 with boosting header 2;
Fill backwater path 5 to be provided with and to fill backwater solenoid valve, back pressure path 6 is provided with two boosting solenoid valves, is provided with pressure testing unit connector between these two boosting solenoid valves;
A water inlet of pressure testing unit 4 is communicated with boosting header 2 by the pressure testing unit connector of a road back pressure path 6, and another water inlet of pressure testing unit 4 is filled backwater path 5 by a road and filled backwater header 3 and be communicated with;
A pressure transducer 7 is for gathering the pressure in boosting header 2; No. two pressure transducers 8 are for gathering the pressure filled in backwater header 3; Controller 9 is for controlling charging pump B1, booster B2, back water pump B3, filling valve MV1, back-up valve MV2, back-water valve (BWV) MV3, all break-makes of filling the boosting solenoid valve on backwater solenoid valve and all back pressure paths 6 of filling on backwater path 5 respectively, controller 9 is for the flow of acquisition stream gauge 10, and controller 9 is also for the pressure signal of the pressure signal and No. two pressure transducers 8 that gather a pressure transducer 7.
In present embodiment, the workflow of described heat-exchange unit pressure testing equipment is as follows:
Open charging pump B1, filling valve MV1, backwater path 5 fills boosting solenoid valve adjacent with water tank 1 on back pressure path 6 that backwater solenoid valve and the header 2 that boosts be communicated with pressure testing unit 4 filling of being communicated with pressure testing unit 4, whether acquisition stream gauge 10 has water-flow signal, has, and closes charging pump B1, filling valve MV1, backwater path 5 fills backwater solenoid valve and boosting solenoid valve adjacent with water tank 1 on the back pressure path 6 of boost header 2 and the header 2 that boosts filling of being communicated with pressure testing unit 4.
After equipment water-filling, open booster B2, back-up valve MV2 and two boosting solenoid valves on all back pressure paths 6 be not communicated with pressure testing unit 4, whether acquisition stream gauge 10 has water-flow signal, has then booster B2, back-up valve MV2 and the boosting solenoid valve on all back pressure paths 6 be not communicated with pressure testing unit 4.
After boosting header water-filling, boosting solenoid valve adjacent with boosting header 2 on the back pressure path 6 that unlatching boosting header 2 is communicated with pressure testing unit 4, gather the pressure in boosting header 2, when reaching test pressure, boosting solenoid valve adjacent with boosting header 2 on the back pressure path 6 that closedown boosting header 2 is communicated with pressure testing unit 4.
The record dwell time, and gather the force value in pressure maintaining period pilot press group 4.
Water tank 1 can ensure there is sufficient water source in pressure testing process, then by charging pump B1, filling valve MV1 with fill backwater header 3 to pressure testing unit 4 water-filling, pressure testing unit 4 starts boosting until test pressure by boosting header 2 after being full of water again, by back water pump B3, water is drawn back water tank 1 after pressure testing completes.By the heat-exchange unit pressure testing equipment described in present embodiment, unit water-filling, pressurization, pressure release can be given fast, shorten the pressure testing cycle, and all by electrical control, reduce error.Recycle pressure testing water, energy-conserving and environment-protective, decrease the waste of water resource, this pressure testing device multichannel water-filling, pressurization can improve work efficiency simultaneously simultaneously.
Embodiment two: present embodiment is described further the heat-exchange unit pressure testing equipment described in embodiment one, in present embodiment, the pressure testing unit connector of back pressure path 6 is communicated with pressure testing unit 4 by high-pressure hose.
Embodiment three: present embodiment is described further the heat-exchange unit pressure testing equipment described in embodiment two, in present embodiment, is connected between high-pressure hose with pressure testing unit 4 by rapid-acting coupling.
Embodiment four: present embodiment is described further the heat-exchange unit pressure testing equipment described in embodiment one, and in present embodiment, the volume of water tank 1 is at 3m
3to 4m
3between.
Embodiment five: present embodiment is described further the heat-exchange unit pressure testing equipment described in embodiment one, in present embodiment, path between water tank 1 and the water return outlet filling backwater header 3 is provided with filtrator, and the path between water tank 1 and the filling opening filling backwater header 3 is provided with filtrator.
Embodiment six: present embodiment is described further the heat-exchange unit pressure testing equipment described in embodiment one, in present embodiment, the path between the filling opening of water tank 1 and boosting header 2 is provided with filtrator.
Embodiment seven: present embodiment is described further the heat-exchange unit pressure testing equipment described in embodiment one, in present embodiment, bottom water tank 1, bottom boosting header 2 and fill bottom backwater header 3 and be equipped with drainpipe.
Embodiment eight: present embodiment is described further the heat-exchange unit pressure testing equipment described in embodiment one, in present embodiment, the path between the filling opening of the path between water tank 1 and the water return outlet filling backwater header 3, path between water tank 1 and the filling opening filling backwater header 3 and water tank 1 and boosting header 2 is equipped with flowmeter.
Embodiment nine: the heat-exchange unit pressure-measuring method described in present embodiment, the method realizes based on following apparatus, and described device comprises: water tank 1, boosting header 2, fill backwater header 3, charging pump B1, booster B2, back water pump B3, filling valve MV1, back-up valve MV2, back-water valve (BWV) MV3, at least one road fill the identical back pressure path 6 of backwater path 5, at least two line structure and flowmeter 10;
The water delivering orifice of water tank 1 is communicated with the water inlet filling backwater header 3 with the water inlet of boosting header 2 simultaneously, charging pump B1 and filling valve MV1 all at water tank 1 and on filling between backwater header 3 path, on the path of booster B2 and back-up valve MV2 all between water tank 1 and boosting header 2;
The water return outlet of water tank 1 is communicated with the water return outlet filling backwater header 3, and back water pump B3 and back-water valve (BWV) MV3 is all at water tank 1 and on filling between backwater header 3 path;
The back pressure mouth of water tank 1 is communicated with, on the path of flowmeter 10 between this back pressure path 6 and water tank 1 by the back pressure mouth of at least one road back pressure path 6 with boosting header 2;
Fill backwater path 5 to be provided with and to fill backwater solenoid valve, back pressure path 6 is provided with two boosting solenoid valves, is provided with pressure testing unit connector between these two boosting solenoid valves;
A water inlet of pressure testing unit 4 is communicated with boosting header 2 by the pressure testing unit connector of a road back pressure path 6, and another water inlet of pressure testing unit 4 is filled backwater path 5 by a road and filled backwater header 3 and be communicated with;
Described heat-exchange unit pressure-measuring method comprises the following steps:
Equipment water-filling step: open charging pump B1, filling valve MV1, backwater path 5 fills boosting solenoid valve adjacent with water tank 1 on back pressure path 6 that backwater solenoid valve and the header 2 that boosts be communicated with pressure testing unit 4 filling of being communicated with pressure testing unit 4, whether acquisition stream gauge 10 has water-flow signal, has, and closes charging pump B1, filling valve MV1, backwater path 5 fills backwater solenoid valve and boosting solenoid valve adjacent with water tank 1 on the back pressure path 6 of boost header 2 and the header 2 that boosts filling of being communicated with pressure testing unit 4;
Boosting header water-filling step: after equipment water-filling, open booster B2, back-up valve MV2 and two boosting solenoid valves on all back pressure paths 6 be not communicated with pressure testing unit 4, whether acquisition stream gauge 10 has water-flow signal, has, and closes the boosting solenoid valve on all back pressure paths 6 of not being communicated with pressure testing unit 4;
Pressurization steps: after boosting header water-filling, boosting solenoid valve adjacent with boosting header 2 on the back pressure path 6 that unlatching boosting header 2 is communicated with pressure testing unit 4, gather the pressure in boosting header 2, when reaching test pressure, boosting solenoid valve adjacent with boosting header 2 on the back pressure path 6 that closedown booster B2, back-up valve MV2 and boosting header 2 are communicated with pressure testing unit 4;
Pressure holding step: record dwell time, and gather the force value in pressure maintaining period pilot press group 4.
Embodiment ten: present embodiment is described further the pressure-measuring method based on heat-exchange unit pressure testing equipment described in embodiment nine, in present embodiment, in steps after, open back-water valve (BWV) MV3 and backwater path 5 fills backwater solenoid valve for filling of being communicated with pressure testing unit 4, when pressure in pressure testing unit 4 is identical with the pressure filled in backwater header 3, boosting solenoid valve adjacent with water tank on the back pressure path that unlatching is communicated with pressure testing unit, delayed start-up back water pump B3 again, make in pressure testing unit 4 and fill water unnecessary in backwater header 3 to flow back to water tank 1.
Embodiment 11: present embodiment is described further the pressure-measuring method based on heat-exchange unit pressure testing equipment described in embodiment nine, in present embodiment, in steps before, also whether the water level that will first detect in water tank 1 reaches demarcation water level.
In present embodiment, described demarcation water level is to ensure that water tank 1 is to boosting header 2 and the water level filling water-filling pressure in backwater header 3.
Claims (10)
1. heat-exchange unit pressure testing equipment, it is characterized in that, it comprises: water tank (1), boosting header (2), fill backwater header (3), charging pump (B1), booster (B2), back water pump (B3), filling valve (MV1), back-up valve (MV2), back-water valve (BWV) (MV3), at least one road fill backwater path (5), the identical back pressure path (6) of at least two line structures, a pressure transducer (7) and No. two pressure transducers (8) controller (9) and flowmeter (10);
The water delivering orifice of water tank (1) is communicated with the water inlet filling backwater header (3) with the water inlet of boosting header (2) simultaneously, charging pump (B1) and filling valve (MV1) are all positioned at water tank (1) and fill on the path between backwater header (3), and booster (B2) and back-up valve (MV2) are all positioned on the path between water tank (1) and boosting header (2);
The water return outlet of water tank (1) is communicated with the water return outlet filling backwater header (3), and back water pump (B3) and back-water valve (BWV) (MV3) are all positioned at water tank (1) and fill on the path between backwater header (3);
The back pressure mouth of water tank (1) is communicated with by the back pressure mouth of at least one road back pressure path (6) with boosting header (2), and flowmeter (10) is positioned on the path between this back pressure path (6) and water tank (1);
Fill backwater path (5) to be provided with and to fill backwater solenoid valve, back pressure path (6) is provided with two boosting solenoid valves, is provided with pressure testing unit connector between these two boosting solenoid valves;
A water inlet of pressure testing unit (4) is communicated with the header (2) that boosts by the pressure testing unit connector on road back pressure path (6), and another water inlet of pressure testing unit (4) is filled backwater path (5) by a road and filled backwater header (3) and be communicated with;
A pressure transducer (7) is for gathering the pressure in boosting header (2); No. two pressure transducers (8) are for gathering the pressure filled in backwater header (3); Controller (9) is for controlling charging pump (B1), booster (B2), back water pump (B3), filling valve (MV1), back-up valve (MV2), back-water valve (BWV) (MV3), all break-makes of filling the boosting solenoid valve on backwater solenoid valve and all back pressure paths (6) of filling on backwater path (5) respectively, controller (9) is for the flow of acquisition stream gauge (10), and controller (9) is also for the pressure signal of the pressure signal and No. two pressure transducers (8) that gather a pressure transducer (7).
2. heat-exchange unit pressure testing equipment according to claim 1, is characterized in that, the pressure testing unit connector of back pressure path (6) is communicated with pressure testing unit (4) by high-pressure hose.
3. heat-exchange unit pressure testing equipment according to claim 2, is characterized in that, is connected between high-pressure hose with pressure testing unit (4) by rapid-acting coupling.
4. heat-exchange unit pressure testing equipment according to claim 1, is characterized in that, the volume of water tank (1) is at 3m
3to 4m
3between.
5. heat-exchange unit pressure testing equipment according to claim 1, it is characterized in that, path between water tank (1) and the water return outlet filling backwater header (3) is provided with filtrator, and the path between water tank (1) and the filling opening filling backwater header (3) is provided with filtrator.
6. heat-exchange unit pressure testing equipment according to claim 1, is characterized in that, the path between the filling opening of water tank (1) and boosting header (2) is provided with filtrator.
7. heat-exchange unit pressure testing equipment according to claim 1, is characterized in that, is equipped with drainpipe bottom water tank (1) bottom, boosting header (2) with filling bottom backwater header (3).
8. heat-exchange unit pressure testing equipment according to claim 1, it is characterized in that, the path between the filling opening of the path between water tank (1) and the water return outlet filling backwater header (3), path between water tank (1) and the filling opening filling backwater header (3) and water tank (1) and boosting header (2) is equipped with flowmeter.
9. heat-exchange unit pressure-measuring method, it is characterized in that, the method realizes based on following apparatus, and described device comprises: water tank (1), boosting header (2), fill backwater header (3), charging pump (B1), booster (B2), back water pump (B3), filling valve (MV1), back-up valve (MV2), back-water valve (BWV) (MV3), at least one road fill backwater path (5), the identical back pressure path (6) of at least two line structures and flowmeter (10);
The water delivering orifice of water tank (1) is communicated with the water inlet filling backwater header (3) with the water inlet of boosting header (2) simultaneously, charging pump (B1) and filling valve (MV1) are all positioned at water tank (1) and fill on the path between backwater header (3), and booster (B2) and back-up valve (MV2) are all positioned on the path between water tank (1) and boosting header (2);
The water return outlet of water tank (1) is communicated with the water return outlet filling backwater header (3), and back water pump (B3) and back-water valve (BWV) (MV3) are all positioned at water tank (1) and fill on the path between backwater header (3);
The back pressure mouth of water tank (1) is communicated with by the back pressure mouth of at least one road back pressure path (6) with boosting header (2), and flowmeter (10) is positioned on the path between this back pressure path (6) and water tank (1);
Fill backwater path (5) to be provided with and to fill backwater solenoid valve, back pressure path (6) is provided with two boosting solenoid valves, is provided with pressure testing unit connector between these two boosting solenoid valves;
A water inlet of pressure testing unit (4) is communicated with the header (2) that boosts by the pressure testing unit connector on road back pressure path (6), and another water inlet of pressure testing unit (4) is filled backwater path (5) by a road and filled backwater header (3) and be communicated with;
Described heat-exchange unit pressure-measuring method comprises the following steps:
Equipment water-filling step: open charging pump (B1), filling valve (MV1), the backwater solenoid valve that fills filled on backwater path (5) be communicated with pressure testing unit (4) goes up the boosting solenoid valve adjacent with water tank (1) with the back pressure path (6) that the header (2) that boosts is communicated with pressure testing unit (4), whether acquisition stream gauge (10) has water-flow signal, have, close charging pump (B1), filling valve (MV1), the backwater solenoid valve that fills filled on backwater path (5) be communicated with pressure testing unit (4) goes up the boosting solenoid valve adjacent with water tank (1) with the back pressure path (6) of header (2) with boosting header (2) that boost,
Boosting header water-filling step: after equipment water-filling, open booster (B2), back-up valve (MV2) and two boosting solenoid valves on all back pressure paths (6) be not communicated with pressure testing unit (4), whether acquisition stream gauge (10) has water-flow signal, has, and closes the boosting solenoid valve on all back pressure paths (6) of not being communicated with pressure testing unit (4);
Pressurization steps: after boosting header water-filling, open the upper boosting solenoid valve adjacent with boosting header (2) of back pressure path (6) that boosting header (2) is communicated with pressure testing unit (4), gather the pressure in boosting header (2), when reaching test pressure, close the upper boosting solenoid valve adjacent with boosting header (2) of back pressure path (6) that charging pump (B1), filling valve (MV1) and boosting header (2) are communicated with pressure testing unit (4);
Pressure holding step: record dwell time, and gather the force value in pressure maintaining period pilot press group (4).
10. heat-exchange unit pressure-measuring method according to claim 9, it is characterized in that, in steps after, open back-water valve (BWV) (MV3) and backwater path (5) fills backwater solenoid valve for filling of being communicated with pressure testing unit (4), when pressure in pressure testing unit (4) is identical with the pressure filled in backwater header (3), open the upper boosting solenoid valve adjacent with water tank of the back pressure path (6) be communicated with pressure testing unit (4), delayed start-up back water pump (B3) again, make in pressure testing unit (4) and fill water unnecessary in backwater header (3) to flow back to water tank (1).
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| CN108120572A (en) * | 2018-02-27 | 2018-06-05 | 博众精工科技股份有限公司 | Electronic product single-point waterproof test tool and test system |
| CN108593217A (en) * | 2018-03-29 | 2018-09-28 | 博众精工科技股份有限公司 | Sealing test system |
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| 贺萌, ***: "换热器新型换热管试压装置的设计与应用", 《中国化工装备 》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105738219A (en) * | 2016-04-11 | 2016-07-06 | 中国化学工程第十一建设有限公司 | Pipeline pressure testing system and method |
| CN105738219B (en) * | 2016-04-11 | 2018-07-13 | 中国化学工程第十一建设有限公司 | A kind of pipeline pressure test system and method |
| CN108120572A (en) * | 2018-02-27 | 2018-06-05 | 博众精工科技股份有限公司 | Electronic product single-point waterproof test tool and test system |
| CN108593217A (en) * | 2018-03-29 | 2018-09-28 | 博众精工科技股份有限公司 | Sealing test system |
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