CN116148033B - Test device and test method - Google Patents
Test device and test method Download PDFInfo
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- CN116148033B CN116148033B CN202211404958.8A CN202211404958A CN116148033B CN 116148033 B CN116148033 B CN 116148033B CN 202211404958 A CN202211404958 A CN 202211404958A CN 116148033 B CN116148033 B CN 116148033B
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- 238000012360 testing method Methods 0.000 title claims abstract description 102
- 238000010998 test method Methods 0.000 title abstract description 10
- 238000007789 sealing Methods 0.000 claims abstract description 22
- 238000009423 ventilation Methods 0.000 claims abstract description 7
- 239000000523 sample Substances 0.000 claims description 21
- 238000010438 heat treatment Methods 0.000 claims description 18
- 238000001514 detection method Methods 0.000 claims description 14
- 238000012544 monitoring process Methods 0.000 claims description 14
- 238000004891 communication Methods 0.000 claims description 11
- 230000001681 protective effect Effects 0.000 claims description 8
- 230000013011 mating Effects 0.000 claims description 5
- 230000008093 supporting effect Effects 0.000 claims description 5
- 238000004321 preservation Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 description 17
- 238000003466 welding Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000013022 venting Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Classifications
-
- 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
-
- 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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- Physics & Mathematics (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The embodiment of the application provides a test device and a test method, which are used for testing the performance of a pipe fitting to be tested under the action of pressure, wherein the device comprises: the test cavity is used for accommodating a pipe fitting to be tested; the connecting piece is connected with the test cavity, can be connected with one end of the pipe fitting to be tested so as to fix the pipe fitting to be tested in the test cavity, is provided with an opening, and can be used for communicating one end of the pipe fitting to be tested with the outside of the test cavity; the sealing piece is used for sealing the other end of the pipe fitting to be tested; the ventilation piece is used for introducing gas into the test cavity so as to form pressure difference between the inside and the outside of the pipe fitting to be tested; and the detecting piece is used for detecting the deformation of the pipe fitting to be tested, can enter the pipe fitting to be tested through the opening and can extend from one end to the other end of the pipe fitting to be tested.
Description
Technical Field
The embodiment of the application relates to the field of pipe fitting performance test, in particular to a test device and a test method.
Background
The pipe elements need to be tested for performance, for example, for their ability to withstand pressure, before they can be put into service. The test devices provided in the related art generally can only take out the pipe from the test device after the test is ended and observe it to determine whether damage has occurred.
Disclosure of Invention
In view of the above, embodiments of the present application provide a test apparatus and a test method.
According to an aspect of an embodiment of the present application, there is provided a test apparatus for testing the performance of a pipe under pressure, the apparatus comprising: the shell forms a test cavity which is used for accommodating a pipe fitting to be tested; the connecting piece is connected with the shell, can be connected with one end of the pipe fitting to be tested so as to fix the pipe fitting to be tested in the test cavity, is provided with an opening, and can be used for communicating one end of the pipe fitting to be tested with the outside of the test cavity; the sealing piece is used for sealing the other end of the pipe fitting to be tested; the ventilation piece is connected with the shell and is used for introducing gas into the test cavity so as to form pressure difference between the inside and the outside of the pipe fitting to be tested; and the detecting piece is used for detecting the deformation of the pipe fitting to be tested, can enter the pipe fitting to be tested through the opening and can extend from one end to the other end of the pipe fitting to be tested.
According to another aspect of the embodiment of the present application, there is provided a test method for testing the performance of a pipe under pressure, the method comprising: one end of the pipe fitting to be tested is connected with the connecting piece, and the other end of the pipe fitting to be tested is connected with the sealing piece; connecting the connecting piece with the shell so as to fix the pipe fitting to be tested in the test cavity; inserting the detecting piece into the pipe fitting to be tested, and enabling the detecting piece to extend from one end of the pipe fitting to be tested to the other end; continuously introducing gas into the pipe fitting to be tested by means of the ventilation piece until the detection piece detects that the pipe fitting to be tested is deformed; and taking the pipe fitting to be tested out of the test cavity, and recording the deformation position and deformation quantity of the pipe fitting to be tested.
According to the test device and the test method provided by the embodiment of the application, the detection piece extends from one end to the other end of the pipe fitting to be tested, and the deformation of the pipe fitting to be tested can be monitored on the whole length of the pipe fitting to be tested, so that the deformation can be found more quickly, and the position where the deformation occurs first can be determined.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a schematic diagram of a test apparatus according to an embodiment of the present application;
FIG. 2 is an enlarged schematic view of a portion of a test device according to an embodiment of the present application;
FIG. 3 is a schematic view of a housing and a connecting portion in a connected state according to an embodiment of the present application;
Fig. 4 and 5 are schematic views of the housing and the connection portion in a disassembled state according to an embodiment of the present application.
It should be noted that the drawings are not necessarily drawn to scale and are shown only in a schematic manner that does not affect the understanding of those skilled in the art.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It is to be noted that unless otherwise defined, technical or scientific terms used herein should be taken in a general sense as understood by one of ordinary skill in the art to which the present application belongs. If, throughout, reference is made to "first," "second," etc., the description of "first," "second," etc., is used merely for distinguishing between similar objects and not for understanding as indicating or implying a relative importance, order, or implicitly indicating the number of technical features indicated, it being understood that the data of "first," "second," etc., may be interchanged where appropriate. If "and/or" is present throughout, it is meant to include three side-by-side schemes, for example, "A and/or B" including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. Furthermore, for ease of description, spatially relative terms, such as "above," "below," "top," "bottom," and the like, may be used herein merely to describe the spatial positional relationship of one device or feature to another device or feature as illustrated in the figures, and should be understood to encompass different orientations in use or operation in addition to the orientation depicted in the figures.
The embodiment of the application provides a test device for testing the performance of a pipe fitting to be tested under the action of pressure, which comprises: the shell forms a test cavity which is used for accommodating a pipe fitting to be tested; the connecting piece is connected with the shell, can be connected with one end of the pipe fitting to be tested so as to fix the pipe fitting to be tested in the test cavity, is provided with an opening, and can be used for communicating one end of the pipe fitting to be tested with the outside of the test cavity; the sealing piece is used for sealing the other end of the pipe fitting to be tested; the ventilation piece is connected with the shell and is used for introducing gas into the test cavity so as to form pressure difference between the inside and the outside of the pipe fitting to be tested; and the detecting piece is used for detecting the deformation of the pipe fitting to be tested, can enter the pipe fitting to be tested through the opening and can extend from one end to the other end of the pipe fitting to be tested.
According to the test device provided by the embodiment of the application, the detection piece extends from one end to the other end of the pipe fitting to be tested, and the deformation of the pipe fitting to be tested can be monitored on the whole length of the pipe fitting to be tested, so that the deformation can be found more quickly, and the position where the deformation occurs first can be determined.
Fig. 1-2 are schematic views of a test device according to an embodiment of the present application, where fig. 2 is a partially enlarged schematic view of fig. 1, and as shown in fig. 1-2, the test device may include a housing 20, a connector 30, a sealing member 40, a venting member 50, and a detecting member 60. It should be noted that although some of the figures show embodiments in which the tubular 10 to be tested is installed in a test apparatus, or there are some written descriptions of the test apparatus in connection with the tubular 10 to be tested, the tubular 10 to be tested is not part of the test apparatus.
The housing 20 forms a test chamber 21, the test chamber 21 being intended to receive a pipe 10 to be tested. The application is not limited to the shape of the test chamber 21, and can accommodate the pipe 10 to be tested, and in some embodiments, the test chamber 21 may be a pipe body having a diameter larger than the pipe 10 to be tested. In some embodiments, it may be desirable to perform high temperature testing of the pipe 10 to be tested, and thus the material of the housing 20 may be a material capable of withstanding high temperatures, such as metal.
The connector 30 is used to secure the pipe 10 to be tested in the test chamber 21. The connector 30 may be connected to the housing 20, and the connector 30 may be connected to one end of the pipe 10 to be tested, and the pipe 10 to be tested is fixed in the test chamber 21 through the connector 30. The connecting piece 30 may be provided with an opening, and when the connecting piece 30 is connected with one end of the pipe fitting 10 to be tested, the opening may communicate the one end of the pipe fitting 10 to be tested with the outside of the test chamber 21, so that the detecting piece 60 may enter the pipe fitting 10 to be tested through the opening, and detect the internal structure of the pipe fitting 10 to be tested.
The sealing member 40 is used for sealing the other end of the pipe member 10 to be tested, i.e. sealing the end of the pipe member 10 to be tested, which is not connected with the connecting member 30, so as to isolate the gas exchange between the inner cavity of the pipe member 10 to be tested and the test cavity 21, and enable the outer portion of the pipe member 10 to be tested to bear the high pressure in the test cavity 21. Further, as described above, the other end of the pipe 10 to be tested communicates with the outside of the test chamber 21 via the opening on the connection member 30, so that the inside of the pipe 10 to be tested is maintained at normal pressure or low pressure, and a pressure difference is formed between the inside and the outside of the pipe 10 to be tested, thereby realizing the test of the performance of the pipe 10 to be tested to withstand high pressure.
The venting member 50 is used to vent gas into the test chamber 21 to create a pressure differential between the inside and outside of the tubular member 10 to be tested. The ventilation member 50 may include a pressurizing device, a pressure regulating valve, a pipeline, etc., where the pressurizing device may be a gas cylinder or a booster pump, etc., and may be connected to the housing 20 through the pipeline to introduce gas into the test chamber 21; the pressure regulating valve is connected to the pipeline and is used for regulating the pressure of the gas. The gas introduced into the test chamber 21 may be an inert gas, such as helium, argon, etc., which has good stability at high temperature and no critical temperature, and can select a larger temperature range during high temperature test.
The detecting member 60 is used for detecting deformation of the pipe 10 to be tested. When the pipe 10 to be tested is mounted in the test apparatus, the probe 60 can enter the pipe 10 to be tested via the opening and can extend from one end to the other end of the pipe 10 to be tested. When a pressure difference with a certain magnitude is formed between the inside and the outside of the pipe fitting 10 to be tested, the pipe fitting 10 to be tested may be deformed, and the deformation of the pipe fitting 10 to be tested may be detected by the detecting member 60. The detecting member 60 may be any device capable of detecting deformation of the pipe 10 to be tested, and the detecting member 60 may detect any parameter of the pipe 10 to be tested to detect deformation of the pipe 10 to be tested, for example, may measure diameter change of the pipe 10 to be tested, measure flatness of an inner surface of the pipe 10 to be tested, etc., which is not limited in the present application.
The probe 60 is capable of entering the tubular 10 to be tested via an opening and is capable of extending from one end of the tubular 10 to be tested to the other. The detecting member 60 can be provided in the pipe member to be tested 10 and can be disposed along the extending direction of the pipe member to be tested 10, and the detecting member 60 extends from one end to the other end of the pipe member to be tested 10, so that the deformation thereof can be monitored over the entire length of the pipe member to be tested 10, that is, the deformation of each position of the pipe member to be tested 10 can be detected simultaneously, so that the deformation can be found more quickly and the position where the deformation occurs first can be determined.
In some embodiments, the probe 60 is capable of forming a gap with the pipe 10 to be tested after entering the pipe 10 to be tested, when the pipe 10 to be tested is deformed, the pipe 10 to be tested is in contact with the probe 60, and the probe 60 is configured to be capable of detecting the contact with the pipe 10 to be tested. Because the outside of the pipe fitting 10 to be tested is high pressure, the pipe fitting 10 to be tested is generally sunken towards the inside of the pipe fitting 10 to be tested when deformed, when the pipe fitting 10 to be tested is sunken, a gap is formed between the detecting member 60 and the pipe fitting 10 to be tested, the detecting member 60 can be contacted with the detecting member 60 when the pipe fitting 10 to be tested is deformed by setting a gap with a reasonable size, in the embodiment, the detecting member 60 detects the deformation of the pipe fitting 10 to be tested by detecting the contact between the pipe fitting 10 to be tested and the detecting member 60, and the deformation of the pipe fitting 10 to be tested can be detected more easily, so that the sensitivity is increased and the cost is saved. In some other embodiments, the detecting member 60 may detect the deformation of the pipe 10 to be tested in other manners, such as by monitoring the inner diameter of the pipe 10 to be tested, which will not be described herein.
As shown in fig. 2, in some embodiments, probe 60 includes: a detection rod 61, the detection rod 61 being capable of entering the pipe 10 to be tested via the opening and extending from one end to the other end of the pipe 10 to be tested; a first wire 62 electrically connected to the probe rod 61; a second wire 63 electrically connected to the pipe 10 to be tested; an alarm 64 electrically connected to the first wire 62 and the second wire 63; when a gap is formed between the detecting rod 61 and the pipe 10 to be tested, the first and second wires 62 and 63 are insulated, and when the detecting rod 61 contacts with the pipe 10 to be tested, the first and second wires 62 and 63 are electrically connected to trigger the alarm 64 to alarm.
In this embodiment, when the detecting member 60 detects the deformation of the pipe 10 to be tested, the detecting rod 61 enters the pipe 10 to be tested through the opening and extends from one end to the other end of the pipe 10 to be tested, and the detecting rod 61 may be made of a conductive material, such as metal. The alarm 64, the first wire 62, the second wire 63, the probe rod 61 and the pipe 10 to be tested can form an electrical circuit for operating the alarm 64. When all positions of the pipe fitting 10 to be tested keep a certain gap with the detecting rod 61, the gap keeps the circuit loop in an open state, the first lead 62 and the second lead 63 are insulated, and the alarm 64 does not alarm at the moment; when any position of the pipe 10 to be tested is contacted with the detecting rod 61 due to deformation, the circuit is switched to a passage state, the first lead 62 and the second lead 63 are electrically connected, and the alarm 64 alarms at this time, so that an operator can be prompted that the pipe 10 to be tested is deformed. The detector structure in this embodiment can increase sensitivity and save cost.
As shown in fig. 4, in some embodiments, the test device further comprises a support 70, the support 70 being configured to support the probe 60 such that a gap is formed between the probe 60 and the tube 10 to be tested after entering the lumen of the tube 10 to be tested. The support 70 may support the probe 60 at a predetermined position such that a gap is formed between the probe 60 and the pipe 10 to be tested, and in some embodiments, the support 70 may support the probe 60 on the axis of the pipe 10 to be tested such that the probe 60 can uniformly detect deformations in various directions in the circumferential direction of the pipe 10 to be tested. In some embodiments, the shape of the support member 70 may be a circle with a through hole, and the material of the support member 70 may be metal.
In some embodiments, the second wire 63 may be electrically connected directly or indirectly to the tubular 10 to be tested. In some embodiments, the second wire 63 may be indirectly electrically connected to the pipe 10 to be tested through the connector 30 or the support 70, and if the second wire 63 is indirectly electrically connected to the pipe 10 to be tested, the pipe 10 to be tested is replaced without having to connect the second wire 63 to a new pipe 10 to be tested again. In some embodiments, when the second wire 63 is indirectly electrically connected to the pipe 10 to be tested through the support 70, insulation may be provided between the support 70 and the probe rod 61 to insulate the first wire 62 and the second wire 63.
In some embodiments, the support 70 is disposed on the connector 30. By providing the support 70 on the connector 30, the overall structure can be made more compact.
As shown in fig. 2-5, in some embodiments, the connector 30 includes: the first matching piece 31, the first matching piece 31 is fixedly connected with the shell 20; a second fitting piece 32, the second fitting piece 32 being detachably fitted to the first fitting piece 31; the connecting pipe 33, the connecting pipe 33 is fixedly connected with the second matching piece 32, one end of the connecting pipe 33 is used for being connected with the pipe fitting 10 to be tested, and the other end forms an opening. In some embodiments, the first mating piece 31 may be welded to the housing 20 to increase the tightness. In some embodiments, the connecting tube 33 may be made of stainless steel, which has good electrical conductivity and supporting rigidity, but the connecting tube 33 may be made of other materials, which is not limited in the present application.
In the present embodiment, by providing the first fitting 31 and the second fitting 32, and detachably connecting the first fitting 31 and the second fitting 32, replacement of the pipe 10 to be tested can be facilitated. In addition, the pipe fitting 10 to be tested is connected with the second matching piece 32 through the connecting pipe 33, so that the pipe fitting 10 to be tested can be prevented from being directly supported by the second matching piece 32, the external supporting effect is reduced, and the accuracy of test data is improved. In some embodiments, the pipe diameter of the connecting pipe 33 may be set to be substantially the same as the pipe diameter of the pipe 10 to be tested to further reduce the support it provides for the pipe 10 to be tested.
In some embodiments, a sealing gasket may be disposed between the first and second mating members 31, 32 to increase the tightness between the first and second mating members 31, 32. Of course, the sealing may be achieved in other ways, which are not limited by the present application.
In some embodiments, the test device further comprises a heating element 80, the heating element 80 being configured to heat the housing 20; the temperature measuring piece 81, the temperature measuring piece 81 is used for monitoring the temperature of the pipe fitting 10 to be tested.
In this embodiment, the heating element 80 heats the housing 20, so that the temperature of the pipe fitting 10 to be tested is increased, and the performance of the pipe fitting 10 to be tested under the high temperature condition can be tested. The temperature measuring member 81 monitors the temperature of the pipe 10 to be tested, and can transmit temperature information to the temperature controller 82, and the pipe 10 to be tested is brought to and maintained at a specified temperature by the temperature measuring member 81 and the temperature controller 82. The heating element 80 may be a heating wire, which may be wound around the casing 20, and the heating element 80 may be a heating rod, a muffle furnace, or other devices, which is not limited in this disclosure.
As shown in fig. 2, in some embodiments, the test device further comprises a pressure monitor 91, the pressure monitor 91 being for monitoring the pressure in the test chamber 21. The pressure monitor 91 may communicate with a control terminal, which records the pressure value in real time after receiving the pressure signal transmitted by the pressure monitor 91, and generates a pressure curve to monitor and control the pressure in the test chamber 21.
In some embodiments, pressure monitor 91 may be disposed outside of test chamber 21, and the apparatus further includes a communication tube 92, with communication tube 92 being used to communicate pressure monitor 91 with test chamber 21. By disposing the pressure monitor 91 outside the test chamber 21, the influence of the high temperature environment in the test chamber 21 on the pressure monitor 91 can be avoided, and the pressure monitor 91 can be kept working normally. Specifically, the casing 20 may be provided with a communication pipe connection hole 25, one end of a communication pipe 92 communicates with the test chamber 21 through the communication pipe connection hole 25, and the other end of the communication pipe 92 communicates with the pressure monitoring member 91, so that gas of the test chamber 21 can enter the pressure monitoring member 91 through the communication pipe 92 and be measured for pressure. The communication pipe 92 may be welded to the housing 20 to achieve a good sealing property.
In some embodiments, the test device further includes a radiating pipe 93, and the radiating pipe 93 is disposed between the pressure monitoring member 91 and the communication pipe 92. It will be appreciated that, since the gas in the test chamber 21 may have a high temperature, in order to prevent the pressure monitor 91 from being damaged, a heat radiating pipe 93 may be further provided between the communication pipe 92 and the pressure monitor 91, and the temperature of the gas supplied to the pressure monitor 91 may be reduced by the heat radiating pipe 93. One end of the connection pipe 92 connected with the radiating pipe 93 may be provided with a welding pipe welding cap welded on the connection pipe 92, the radiating pipe 93 may be screwed with the welding pipe welding cap, and a sealing gasket is provided between the radiating pipe 93 and the welding pipe welding cap to increase the sealing property. The pressure monitoring piece 91 may be screwed with the radiating pipe 93, and a sealing gasket is provided between the pressure monitoring piece 91 and the radiating pipe 93 to increase the tightness.
In some embodiments, the housing 20 may have a vent 24 formed therein, the vent 24 being configured to be positioned on the axis of the tubular 10 to be tested, and the vent 24 and the seal 40 forming a gap therebetween, the vent 50 being connected to the vent 24. The gap formed between the vent hole 24 and the sealing member 40 can buffer the pressure of the gas entering from the vent hole 24, so that the pressure is more uniform along the axial direction of the pipe fitting 10 to be tested; the vent holes 24 are located on the axis of the pipe 10 to be tested, so that the pressure is more uniform along the circumferential direction of the pipe 10 to be tested. Through the arrangement mode, the external pressure born by the pipe fitting 10 to be tested can be uniform, and the position where the pipe fitting 10 to be tested is deformed or even broken at first is a weak position of the pipe fitting 10 to be tested.
In some embodiments, the test device further comprises a protective housing 22, the protective housing 22 being disposed outside of the housing 20. Because of the higher pressure and temperature in the test chamber 21, a protective housing 22 may be provided outside the housing 20 to ensure operator safety. In some embodiments, the protective housing 22 may be a sealed box.
In some embodiments, the test device further comprises a thermal insulation member 23, the thermal insulation member 23 being disposed between the protective housing 22 and the housing 20. By providing the insulating member 23, it is possible to facilitate maintenance of the temperature in the test chamber 21.
In some embodiments, the protective housing 22 includes a plurality of sub-housings that form a removably mating connection therebetween. By providing a plurality of sub-housings, the mounting and dismounting of the protective housing 22 can be facilitated.
In some embodiments, the plurality of sub-housings may include a first sub-housing 221 as a main body of the protection housing 22, and second and third sub-housings 222 and 223 disposed at both sides of the first sub-housing 221. The first sub-housing 221 may be a cylinder having a diameter larger than that of the test chamber 21. The upper side of the cylinder body is provided with a communicating pipe 92 preformed hole for the communicating pipe 92 to pass through; the lower side of the cylinder is provided with a bracket hole and a lead hole for allowing a bracket supporting the test chamber 21 and a lead wire for transmitting power and signals to pass through. The first sub-housing 221 may be a cylinder formed by splicing two semicircular parts, so that the first sub-housing 221 may be disassembled conveniently, and the two semicircular parts may be connected by a bolt and nut structure.
In some embodiments, the second sub-housing 222 and the third sub-housing 223 are disposed at both sides of the cylinder as two bottom surfaces of the cylinder. The second sub-housing 222 may be used as the bottom surface of the cylinder near the vent hole 24, and the second sub-housing 222 may be composed of two semicircular sealing plates with semicircular holes, and the second sub-housing 222 is formed with two semicircular holes for mounting one end of the test chamber 21 with the vent hole 24. The third sub-housing 223 may be used as a bottom surface of the cylinder body near the connection member 30, and the third sub-housing 223 may be circular, and the third sub-housing 223 is fixedly connected to any one of two semicircular portions of the first sub-housing 221.
In some embodiments, the test device may include a support for supporting the test chamber 21. The support includes two pipe clamps and support base, and the pipe clamp divides upper and lower part, and upper and lower part passes through bolted connection. The lower part of the pipe clamp is welded on the bracket base, and the upper part of the pipe clamp is a single part which can be detached.
The embodiment of the application also provides a test method for testing the performance of the pipe fitting 10 to be tested under the action of pressure, the method comprises the following steps: one end of the pipe fitting 10 to be tested is connected with the connecting piece 30, and the other end is connected with the sealing piece 40; connecting the connector 30 with the housing 20 to fix the pipe 10 to be tested in the test chamber 21; inserting the detecting element 60 into the pipe fitting 10 to be tested, and enabling the detecting element 60 to extend from one end of the pipe fitting 10 to be tested to the other end; continuously introducing gas into the pipe fitting 10 to be tested by means of the ventilation piece 50 until the detection piece 60 detects deformation of the pipe fitting 10 to be tested; the pipe fitting 10 to be tested is taken out of the test cavity 21, and the deformation position and deformation amount of the pipe fitting 10 to be tested are recorded.
The test method provided by the embodiment of the application enables the probe 60 to extend from one end to the other end of the pipe 10 to be tested, and the deformation of the pipe 10 to be tested can be monitored over the whole length of the pipe, so that the deformation can be found more quickly and the position where the deformation occurs first can be determined. The test method provided by the embodiment of the application can be implemented by the test device provided by the embodiment of the application.
In some embodiments, the tightness of the test chamber 21 is checked before the probe 60 is inserted into the pipe 10 to be tested. By detecting the tightness of the test chamber 21, it is ensured that the test can be performed normally. The vent 50 may be used to vent a gas at a predetermined pressure into the test chamber 21 and then the pressure obtained by the pressure monitor 91 may be monitored for a predetermined period of time, and if the pressure is not significantly reduced, the next test may be performed.
In some embodiments, the housing 20 is heated by the heating element 80 to maintain the tube 10 to be tested to a preset temperature before the gas is continuously introduced into the tube 10 to be tested by the venting element 50. By maintaining the pipe 10 to be tested to a preset temperature, the control parameters of the heating element 80 required when the heating element 80 maintains the preset temperature of the pipe to be tested are obtained, so that the heating element 80 can be controlled by the control parameters after the start of the test. Before the gas is introduced, the alarm device can be opened after the first wire 62 and the second wire 63 are connected, and if the alarm device does not alarm, the next test can be performed.
In some embodiments, the housing 20 is preheated by the heating element 80 prior to inserting the probe 60 into the tubular 10 to be tested; recording control parameters of the heating element 80 when the pipe fitting 10 to be tested reaches a preset temperature; after the pipe 10 to be tested is cooled to room temperature, the probe 60 is inserted into the pipe 10 to be tested; the heating member 80 is controlled to heat based on the control parameter. By controlling the heating member 80 to heat based on the control parameter, the pipe 10 to be tested can be maintained at a preset temperature more easily, and the efficiency of the test can be improved.
In some embodiments, vent 50 and heating element 80 are closed before removing tube 10 to be tested from test chamber 21, allowing test chamber 21 to naturally vent and allowing tube 10 to be tested to naturally cool. By naturally decompressing the test cavity 21 and naturally cooling the pipe fitting 10 to be tested, the pipe fitting 10 to be tested can be prevented from generating additional deformation due to abrupt change of the conditions, and the obtained experimental data is more accurate.
It should also be noted that, in the embodiments of the present application, the features of the embodiments of the present application and the features of the embodiments of the present application may be combined with each other to obtain new embodiments without conflict.
The foregoing description is only illustrative of the present application and is not intended to limit the scope of the application, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present application.
Claims (12)
1. A test device for testing the performance of a tubular under pressure, the device comprising:
The shell forms a test cavity for accommodating a pipe fitting to be tested;
The connecting piece is connected with the shell, can be connected with one end of the pipe fitting to be tested so as to fix the pipe fitting to be tested in the test cavity, and is provided with an opening which can communicate one end of the pipe fitting to be tested with the outside of the test cavity;
The sealing piece is used for sealing the other end of the pipe fitting to be tested;
The ventilation piece is connected with the shell and is used for introducing gas into the test cavity so as to form pressure difference between the inside and the outside of the pipe fitting to be tested; and
The detection piece is used for detecting deformation of the pipe fitting to be tested, can enter the pipe fitting to be tested through the opening and can extend from one end to the other end of the pipe fitting to be tested;
the detection piece can form a gap with the pipe fitting to be tested after entering the pipe fitting to be tested, when the pipe fitting to be tested is deformed, the pipe fitting to be tested is contacted with the detection piece, and the detection piece is configured to be capable of detecting the contact with the pipe fitting to be tested;
the probe includes:
A probe rod capable of entering the pipe to be tested through the opening and extending from one end to the other end of the pipe to be tested;
the first lead is electrically connected with the detection rod;
The second lead is electrically connected with the pipe fitting to be tested;
the alarm is electrically connected with the first wire and the second wire;
When a gap is formed between the detecting rod and the pipe fitting to be tested, the first wire and the second wire are insulated, and when the detecting rod is in contact with the pipe fitting to be tested, the first wire and the second wire are electrically connected so as to trigger the alarm to alarm.
2. The apparatus of claim 1, further comprising:
The support piece is used for supporting the detection piece, so that a gap can be formed between the detection piece and the pipe fitting to be tested after the detection piece enters the pipe cavity of the pipe fitting to be tested.
3. The device of claim 2, wherein the support is disposed on the connector.
4. The apparatus of claim 1, wherein the connector comprises:
the first matching piece is fixedly connected with the shell;
the second matching piece can be detachably matched and connected with the first matching piece;
the connecting pipe is fixedly connected with the second matching piece, one end of the connecting pipe is used for being connected with the pipe fitting to be tested, and the other end of the connecting pipe forms the opening.
5. The apparatus of claim 1, further comprising:
the heating piece is used for heating the shell;
The temperature measuring piece is used for monitoring the temperature of the pipe fitting to be tested.
6. The apparatus of claim 1 or 5, further comprising:
And the pressure monitoring piece is used for monitoring the pressure in the test cavity.
7. The apparatus of claim 6, wherein the pressure monitoring member is disposed outside the test chamber, the apparatus further comprising a communication tube for communicating the pressure monitoring member with the test chamber.
8. The apparatus of claim 7, further comprising:
And the radiating pipe is arranged between the pressure monitoring piece and the communicating pipe.
9. The device of claim 1, wherein the housing is formed with a vent configured to be located on an axis of the tube to be tested, and wherein a gap is formed between the vent and the seal, the vent being connected to the vent.
10. The apparatus of claim 1, further comprising:
the protection casing, the protection casing sets up the outside of casing.
11. The apparatus of claim 10, further comprising:
the heat preservation piece is arranged between the protection shell and the shell.
12. The device of claim 10, wherein the protective housing comprises a plurality of sub-housings forming a removably mating connection therebetween.
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