CN114659882A - Composite transition joint hydrostatic test device and hydrostatic test method - Google Patents
Composite transition joint hydrostatic test device and hydrostatic test method Download PDFInfo
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- CN114659882A CN114659882A CN202210365562.0A CN202210365562A CN114659882A CN 114659882 A CN114659882 A CN 114659882A CN 202210365562 A CN202210365562 A CN 202210365562A CN 114659882 A CN114659882 A CN 114659882A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
A composite transition joint hydrostatic test device and a hydrostatic test method are disclosed, wherein the device comprises an inlet chuck and an outlet chuck, the inlet chuck is used for being hermetically sleeved in an inlet side of a transition joint, the outlet chuck is used for being hermetically sleeved in an outlet side of the transition joint, the inlet chuck is provided with an inlet joint which penetrates through the inlet chuck and is used for injecting water and pressurizing into the transition joint, and the outlet chuck is provided with a pressure gauge joint which penetrates through the outlet chuck and is used for discharging gas in the transition joint and detecting the pressure value of the injected water and pressurizing; the sealing penetrating inlet chuck and the sealing penetrating outlet chuck are provided with pull rods which are used for applying pressing constraint force to the inlet chuck and the outlet chuck when water is injected into the transition joint and the water is pressurized, so that the outward pushing stress of the water pressure in the transition joint to the inlet chuck and the outlet chuck is balanced. The invention can accurately reflect the compression strength performance of the transition joint without generating any damage and external pressure on the transition joint, and can be quickly assembled, clamped and disassembled.
Description
Technical Field
The invention relates to the technical field of hydrostatic test strength testing, in particular to a hydrostatic test device and a hydrostatic test method for a composite transition joint.
Background
The device and the structure relate to the connection between a stainless steel pipeline and an aluminum alloy pipeline, a multilayer metal composite transition joint prepared by multilayer different metal materials in the modes of explosive welding, diffusion welding, vacuum electron beam welding and the like is a necessary device for realizing the connection of the two pipelines, and fig. 1 is a structural schematic diagram of a typical composite transition joint, which is formed by welding four different metal materials including a first metal 801, a second metal 802, a third metal 803 and a fourth metal 804, and the performance of the composite transition joint needs to meet the requirements of high pressure and safe, reliable and stable fluid transportation under the working condition of low temperature.
The hydrostatic test is one of important and key indexes for detecting the compressive strength and the sealing performance of the multi-layer metal transition joint, and the conventional hydrostatic strength test on the transition joint is usually realized by the following two modes, namely a first test mode: and respectively welding an aluminum alloy connecting pipe, a stainless steel connecting pipe and corresponding plugs on two sides of the multilayer metal composite transition joint for sealing. One side of the pressure test water inlet end is connected with a pressurizing device and a pipeline; the other side is connected with a pressure gauge and an exhaust valve to display the pressure test value, and the pressure intensity test of the transition joint is completed in such a way, and the test mode has the following defects: different tools need to be welded on two sides of the transition joint, so that materials and manpower are wasted; the heat influence in the welding process is very easy to deform and damage the junction surface of the transition joint, influence the performance of the transition joint and even cause the scrapping of the transition joint; after the test, the tool needs to be cut off, the transition joint body is damaged in the cutting process, and the test transition joint cannot be used.
Second test mode: the two sides of the multi-layer metal composite transition joint are respectively provided with a pressing flange, the pressing flange on one side is provided with a water inlet interface connected with a pressing device, the pressing flange on the other side is provided with a pressure gauge interface connected with a pressure gauge, the pressing flanges on the two sides are connected through a plurality of bolts during testing, the sections on the two sides of the transition joint are sealed, and a pressure strength test is completed.
Disclosure of Invention
The invention aims to provide a composite transition joint hydrostatic test device and a hydrostatic test method.
The technical scheme adopted by the invention to achieve the aim is as follows:
the utility model provides a compound transition joint hydrostatic test device, is including being used for the sealed cover to establish the import chuck in the transition joint inlet side and being used for the sealed cover to establish the export chuck in the transition joint outlet side:
the inlet chuck is provided with an inlet joint which penetrates through the inlet chuck and is used for injecting water and pressurizing into the transition joint, and the outlet chuck is provided with a pressure gauge joint which penetrates through the outlet chuck and is used for discharging gas in the transition joint and detecting a water injection pressurizing pressure value;
the sealing penetrating inlet chuck and the sealing penetrating outlet chuck are provided with pull rods which are used for applying pressing constraint force to the inlet chuck and the outlet chuck when water is injected into the transition joint and the water is pressurized, so that the outward pushing stress of the water pressure in the transition joint to the inlet chuck and the outlet chuck is balanced.
In a preferred embodiment of the present invention, first sealing members are respectively disposed between the tie rod and the inlet chuck and between the tie rod and the outlet chuck, and second sealing members for sealing engagement with the transition joint are respectively disposed on the inlet chuck and the outlet chuck.
In a preferred embodiment of the present invention, the first seal and the second seal are both O-rings.
As a preferable scheme of the present invention, both ends of the pull rod are respectively screw-connected with a lock nut.
As a preferable scheme of the invention, the inlet chuck and the outlet chuck are respectively provided with a groove matched with the locking nut.
The hydraulic test method of the composite transition joint hydraulic test device comprises the following steps:
s1, sleeving an inlet chuck on the inner side of an inlet of the transition joint in a sealing manner, sleeving an outlet chuck on the inner side of an outlet of the transition joint in a sealing manner, and plugging two ends of the transition joint;
s2, mounting a pull rod to enable the pull rod to generate tensile stress on the inlet chuck and the outlet chuck;
s3, injecting water into the transition joint along the inlet joint, and exhausting air in the transition joint from the pressure gauge joint;
and S4, pressurizing water in the transition joint, tensioning the inlet chuck and the outlet chuck by using the pull rod, and testing the water pressure value along the pressure gauge joint to finish the water pressure test of the transition joint.
The invention has the beneficial effects that:
1. the water pressure test device disclosed by the invention has the advantages that the chucks are respectively and hermetically sleeved on the inner sides of the two ends of the transition joint, the chucks at the two ends are tightly pressed by the penetrating pull rod, the outward thrust of the internal pressure on the chucks during the water pressure test is balanced, and the sealing in the water pressure test of the transition joint is realized.
2. The hydraulic test device can quickly and conveniently realize hydraulic detection of the transition joint, cannot cause any damage and damage to the transition joint in the mounting and dismounting processes, can be used for a long time and for multiple times, and has strong detection reliability and universality.
Description of the drawings:
FIG. 1 is a schematic structural view of a composite transition joint;
FIG. 2 is a schematic structural diagram of a hydraulic test device for a composite transition joint;
fig. 3 is a schematic structural diagram of a composite transition joint hydrostatic test device provided by the embodiment.
The labels in the figure are: 1. the sealing device comprises a pull rod, 2, a first sealing element, 3, a locking nut, 4, an inlet chuck, 5, a second sealing element, 6, an inlet joint, 7, an inlet connecting pipe, 8, a transition joint, 801, a first metal, 802, a second metal, 803, a third metal, 804, a fourth metal, 9, an outlet connecting pipe, 10, an outlet chuck, 11 and a pressure gauge joint.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and detailed description, wherein in the description of the invention it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The invention provides a concrete embodiment of a composite transition joint hydrostatic test device, which comprises the following steps:
referring to fig. 3, an inlet connection pipe 7 is generally disposed at an inlet side of the transition joint 8, an outlet connection pipe 9 is disposed at an outlet side of the transition joint 8, and the inlet connection pipe 7, the transition joint 8, and the outlet connection pipe 9 are common transition joint product components and are used for being mounted on various low-temperature devices to realize connection between an external pipeline and the devices themselves.
The composite transition joint hydrostatic test device of the embodiment comprises an inlet chuck 4, an outlet chuck 10 and a pull rod 1.
Wherein, the inlet chuck 4 is used for the sealing sleeve to establish in the inlet side of transition joint 8, export chuck 10 is used for the sealing sleeve to establish in the outlet side of transition joint 8, take as the example shown in fig. 3, in the inlet connecting pipe 7 of transition joint 8 is located to the inlet chuck 4 cover, and with sealing connection between the inner wall of inlet connecting pipe 7, in the outlet connecting pipe 9 of transition joint 8 is located to the export chuck 10 cover, and with sealing connection between the inner wall of outlet connecting pipe 9, inlet chuck 4 and export chuck 10 are with the both ends sealing shutoff of transition joint 8.
The inlet joint 6 is gone up at inlet chuck 4, inlet joint 6 runs through inlet chuck 4 and sets up, be used for injecting water to the crossover sub 8 and pressurize, during the use, with inlet joint 6 connect suppress the equipment pipeline can, be equipped with pressure gauge joint 11 on the export chuck 10, pressure gauge joint 11 runs through export chuck 10 and sets up, be used for discharging the gas in the crossover sub 8 and detect the water injection and suppress the pressure value, during the use, installation manometer and discharge valve can on pressure gauge joint 11.
The pull rod 1 penetrates through the inlet chuck 4 and the outlet chuck 10 in a sealing mode, a groove can be formed in the position, corresponding to the penetration position of the pull rod 1, of the inlet chuck 4 and the outlet chuck 10, locking nuts 3 in threaded connection are arranged at two ends of the pull rod 1, when the locking nuts 3 work, the locking nuts can enter the groove to be in contact with the body of the chuck, the pull rod 1 and the chuck are fastened, when the pull rod 1 is applied, when water is injected into the transition joint 8 and pressurized, the pull rod 1 is used for applying a compression constraint force to the inlet chuck 4 and the outlet chuck 10, the constraint force can balance the outward pushing stress of water pressure in the transition joint 8 on the inlet chuck 4 and the outlet chuck 10, any external pressing force cannot be generated on the interface of the transition joint 8, any damage and damage to the transition joint cannot be generated, and the pressure resistance and the sealing performance of the transition joint can be accurately reflected.
In order to meet the requirement of high-pressure strength test pressure on the transition joint 8, the first sealing element 2 is respectively arranged between the pull rod 1 and the inlet chuck 4 and the outlet chuck 10, the inlet chuck 4 and the outlet chuck 10 are respectively provided with the second sealing element 5 which is in sealing fit with the transition joint 8, in specific implementation, the first sealing element 2 and the second sealing element 5 can both adopt O-shaped sealing rings, for example, annular grooves can be arranged on the inlet chuck 4, the outlet chuck 10 and the pull rod 1, the O-shaped sealing rings are arranged in the annular grooves, the radial sealing between the two sides of the transition joint and between the pull rod and the chuck is realized by utilizing the O-shaped sealing rings, so that in the test process, the radial sealing between the two sides of the transition joint and between the pull rod and the chuck is realized when the internal pressure of the transition joint 8 is balanced by the pull rod 1 to push the chuck outwards, the requirement of high-pressure strength test pressure is met.
The invention also provides a hydraulic test method of the composite transition joint hydraulic test device, which comprises the following steps:
s1, the inlet chuck 4 is hermetically sleeved on the inner side of the inlet of the transition joint 8, the outlet chuck 10 is hermetically sleeved on the inner side of the outlet of the transition joint 8, taking fig. 3 as an example, the inlet chuck 4 can be sleeved in the inlet connection pipe 7, the outlet chuck 10 can be sleeved in the outlet connection pipe 9, and the two ends of the transition joint 8 can be sealed.
S2, installing the draw bar 1 to make the draw bar 1 generate tensile stress on the inlet chuck 4 and the outlet chuck 10, and adjusting the locking nut 3 to connect and fix the draw bar 1, the inlet chuck 4 and the outlet chuck 10 as shown in fig. 3.
S3, connecting the inlet joint 6 with a water pipe of a hydrostatic test device, injecting water into the transition joint 8 along the inlet joint 6, discharging air in the transition joint 8 from the pressure gauge joint 11, and opening an exhaust valve arranged on the transition joint 8 to exhaust air during specific operation.
S4, after the air in the transition joint 8 is exhausted, pressurizing the water in the transition joint 8, tensioning the inlet chuck 4 and the outlet chuck 10 by the pull rod 1, reading a test water pressure value of a water pressure test from a pressure gauge arranged on the pressure gauge joint 11, and finishing the water pressure test of the transition joint 8.
It should be noted that the above embodiments are only for illustrating the present invention, but the present invention is not limited to the above embodiments, and any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention fall within the protection scope of the present invention.
Claims (6)
1. The composite transition joint hydrostatic test device is characterized by comprising an inlet chuck (4) and an outlet chuck (10), wherein the inlet chuck (4) is used for being hermetically sleeved in an inlet side of a transition joint (8), and the outlet chuck (10) is used for being hermetically sleeved in an outlet side of the transition joint (8):
an inlet joint (6) which penetrates through the inlet chuck (4) and is used for injecting water into the transition joint (8) and pressurizing is arranged on the inlet chuck (4), and a pressure gauge joint (11) which penetrates through the outlet chuck (10) and is used for discharging gas in the transition joint (8) and detecting the pressure value of water injection and pressurizing is arranged on the outlet chuck (10);
the sealed penetrating inlet chuck (4) and the sealed penetrating outlet chuck (10) are provided with pull rods (1) which are used for exerting pressing constraint force on the inlet chuck (4) and the outlet chuck (10) when water is injected into the transition joint (8) for pressurization so as to balance the outward pushing stress of the water pressure in the transition joint (8) on the inlet chuck (4) and the outlet chuck (10).
2. A composite transition joint hydrostatic test unit as claimed in claim 1, wherein first seals (2) are provided between the tie rod (1) and the inlet (4) and outlet (10) chucks, respectively, and second seals (5) for sealing engagement with the transition joint (8) are provided on the inlet (4) and outlet (10) chucks, respectively.
3. A composite transition joint hydrostatic test apparatus as claimed in claim 2, wherein the first seal (2) and the second seal (5) are O-rings.
4. The hydrostatic test device of a composite transition joint of claim 1, characterized in that the two ends of the pull rod (1) are respectively connected with a locking nut (3) in a threaded manner.
5. The hydrostatic test device for the composite transition joint as claimed in claim 4, wherein the inlet chuck (4) and the outlet chuck (10) are respectively provided with a groove adapted to the lock nut.
6. The method for hydrostatic testing of a composite transition joint hydrostatic testing apparatus of any one of claims 1-5, comprising the steps of:
s1, the inlet chuck (4) is sleeved on the inner side of the inlet of the transition joint (8) in a sealing manner, the outlet chuck (10) is sleeved on the inner side of the outlet of the transition joint (8) in a sealing manner, and the two ends of the transition joint (8) are plugged;
s2, installing the pull rod (1) to enable the pull rod (1) to generate tensile stress on the inlet chuck (4) and the outlet chuck (10);
s3, injecting water into the transition joint (8) along the inlet joint (6), and exhausting air in the transition joint (8) from the pressure gauge joint (11);
s4, pressurizing water in the transition joint (8), tensioning the inlet chuck (4) and the outlet chuck (10) by the pull rod (1), testing a water pressure value along the pressure gauge joint (11), and finishing the water pressure test of the transition joint (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210365562.0A CN114659882B (en) | 2022-04-08 | 2022-04-08 | Hydraulic test device and hydraulic test method for composite transition joint |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210365562.0A CN114659882B (en) | 2022-04-08 | 2022-04-08 | Hydraulic test device and hydraulic test method for composite transition joint |
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| CN114659882A true CN114659882A (en) | 2022-06-24 |
| CN114659882B CN114659882B (en) | 2023-06-02 |
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2022
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