CN217542686U - Test fixture and tunnel pipe pressure test device with same - Google Patents
Test fixture and tunnel pipe pressure test device with same Download PDFInfo
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- CN217542686U CN217542686U CN202221129788.2U CN202221129788U CN217542686U CN 217542686 U CN217542686 U CN 217542686U CN 202221129788 U CN202221129788 U CN 202221129788U CN 217542686 U CN217542686 U CN 217542686U
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Abstract
The utility model provides a test fixture and have tunnel pipe pressure test device of this test fixture relates to pressure detection technical field, and the main objective provides one kind can carry out the test fixture that detects and supporting testing arrangement to tunnel pipe's external pressure. The test tool comprises a pressure-bearing member and a pressure detection piece, wherein a test cavity for carrying out pressure test is formed in the pressure-bearing member, two ends of the pressure-bearing member are of a closed structure, and the pressure detection piece is located on the pipe wall of the pressure-bearing member and can detect the pressure in the pressure-bearing member. The tunnel pipe pressure testing device comprises a testing tool, a workpiece to be tested is located in the testing cavity, and a gap exists between the outer peripheral side wall of the workpiece to be tested and the inner side wall of the pressure-bearing member.
Description
Technical Field
The utility model belongs to the technical field of the pressure detection technique and specifically relates to a test fixture and have tunnel pipe pressure test device of this test fixture is related to.
Background
The tunnel pipe is an important part in a rocket pressurizing conveying pipeline system and is used for conveying an oxidant and isolating a combustion agent; in a working state, the tunnel pipe is mainly subjected to external pressure, so that the external pressure test is the most important test item in the quality detection of the tunnel pipe. The tunnel pipe consists of a plurality of corrugated pipes, a flange plate and a loop flange ring, and is longer in length which can reach 2000 mm-10000 mm; because the external pressure test experience is poor and no relevant tool test standard exists, the traditional tunnel tube test generally converts the external pressure load into the internal pressure test load and carries out the internal pressure test; after parts such as tunnel pipe, compensator, the bottom of the case, section of thick bamboo section weld and assembly are accomplished, carry out the hydraulic test of operating condition again, but this hydraulic test method has certain risk, because the internal pressure test can't characterize external pressure operating condition completely, if the hydraulic test goes wrong under the follow-up assembly state, remedy the difficulty, can lead to scrapping of whole storage tank.
The patent No. CN 113432798A provides an external pressure testing method for a compensator, which can satisfy the external pressure testing of a pressure pipeline with a short length such as a compensator, but the design idea is to perform an external pressure test with the pipeline axially upward, and this method is suitable for a pipeline with a short length, but does not consider the hydraulic testing of a pipeline with a length of more than 2000mm such as a tunnel pipe. Because tunnel pipe pipeline is longer, need consider in its assembly and the external pressure test process factors such as deformation, avoid fish tail, in addition, because the volume is great, the pressurize pressure is less, and the precision of its test in-process pressure also needs the important consideration.
In order to improve the reliability of the pressure test of the tunnel pipe, reduce the risk of the hydraulic test in the subsequent assembly state, and reduce the detection cost, a device which is convenient to use, high in efficiency, low in cost and capable of detecting the external pressure of the tunnel pipes with different lengths needs to be developed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a test fixture and have tunnel pipe pressure test device of this test fixture to a simple structure and the tunnel pipe external pressure that facilitates use detect and use pressure test device is provided. The utility model provides a plurality of technological effects that preferred technical scheme among a great deal of technical scheme can produce are seen in the explanation below in detail.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides a test fixture, including pressure-bearing member and pressure detection spare, form the test chamber that is used for carrying out the pressure test in the pressure-bearing member, the both ends of pressure-bearing member are enclosed construction, pressure detection spare is located on the pressure-bearing member pipe wall and can detect pressure-bearing member internal pressure.
Because there is the test chamber inside the pressure-bearing member, consequently will carry out the equipment that external pressure detected and place in this test intracavity can, the pressure value that the pressure detection spare that is located on the pressure-bearing member this moment can real-time detection test intracavity to help judges whether the external pressure tolerance condition of the equipment that awaits measuring accords with the designing requirement.
On the basis of the technical scheme, the utility model discloses can also do following improvement.
As a further improvement of the utility model, a pressure boost interface is still provided with on the lateral wall of pressure-bearing member.
The pressure-increasing interface can help to adjust the pressure value in the pressure-bearing member.
As a further improvement, the side wall of the pressure-bearing member is provided with a water filling port and an air outlet, the water filling port and the air outlet are located on the same side of the pressure-bearing member.
The preliminary pressurization treatment of test chamber can be realized to the mode of injected water in to the test chamber through the water filling port to the operating condition of simulation tunnel pipe conveniently carries out the external pressure test to it. The exhaust port located on the same side with the water filling port can guarantee that the test cavity can be filled with water.
As a further improvement of the present invention, the pressure-bearing member comprises a sealing head, an end cover and a pressure-bearing pipe, the pressure-bearing pipe comprises at least one pressure-bearing section, the pressure-bearing section is a tubular structure, and all the pressure-bearing sections are connected end to end; the seal head and the end cover are respectively positioned at two ends of the pressure bearing pipe.
The length of the bearing pipe can be adaptively adjusted according to the number of the bearing sections, so that the test tool can meet the detection requirements of tunnel pipe workpieces of various specifications, and has the advantages of low cost and good compatibility.
As a further improvement, the number of the bearing sections is at least two, and is adjacent to the bearing sections, and the bearing sections are connected through flange sealing.
The two adjacent pressure-bearing sections can be hermetically connected through the flange, so that water leakage or pressure relief at the joint is avoided; simultaneously, the structure is convenient and fast to assemble and disassemble, and has the advantages of low cost and high efficiency.
As a further improvement of the utility model, the end cover is connected with the pressure-bearing pipe through a flange and is axially sealed with the pressure-bearing pipe through an O-shaped ring; the seal head is connected with the pressure bearing pipe through a flange.
When the end cover is used, in order to avoid leakage or pressure relief at the end cover, the end cover part can be subjected to important sealing treatment through the O-shaped ring.
The utility model provides a tunnel pipe pressure test device, including above-mentioned arbitrary test fixture, wait to detect the work piece and be located the test intracavity just wait to detect the periphery lateral wall of work piece with there is the clearance between the inside wall of pressure-bearing member.
The inner side wall of the testing device can form a certain gap with the outer side wall of the workpiece to be detected, and the detection of the external pressure of the workpiece can be realized through the gap.
As the utility model discloses a further improvement still includes the slider, the quantity of slider is at least two, all the slider is located in the pressure-bearing member and can follow the inside wall sliding movement of pressure-bearing member waits to detect the work piece and can pass through the slider inserts in the pressure-bearing member.
The sliding block can help to support the workpiece, the workpiece is guaranteed to be always in a horizontal state in the detection process, deformation of the tunnel pipe workpiece in the detection process due to dead weight can be avoided, and the bus degree of the tunnel pipe is guaranteed.
As a further improvement of the present invention, the end of the workpiece is provided with a loop flange, and the workpiece passes through the loop flange and the one end fixed connection in the axial direction of the pressure-bearing member.
The workpiece can be fixed in the pressure-bearing member under the action of the loop flange, meanwhile, the workpiece is sealed, and the water in the test cavity is prevented from entering the workpiece to influence the accuracy of a detection result.
As a further improvement of the present invention, the pressure-bearing member is a tubular structure and the included angle between the straight line where the axis of the pressure-bearing member is located and the horizontal plane is not more than 5 °. In order to ensure the accuracy of the detection result and avoid deformation of the tunnel pipe workpiece in the detection process, it is necessary to ensure that the pressure-bearing member for detection is in a horizontal or nearly horizontal state as much as possible.
Compared with the prior art, the test tool and the tunnel pipe pressure test device with the test tool provided by the preferred embodiment of the utility model can directly detect the external pressure and compression resistance condition of the tunnel pipe workpiece, the measured data is more accurate, and the condition that the product is repaired or even scrapped is effectively avoided; meanwhile, the detection equipment has better compatibility and can detect tunnel pipes with different sizes. Compared with the traditional test bed and other complex and expensive equipment, the detection equipment is simpler and quicker to install and operate, is convenient to use, and effectively avoids the possible deformation problem of the tunnel pipe in the detection process through a sliding block structure; the structure also effectively avoids the condition that the test result is inaccurate due to equipment errors, and can accurately test the external pressure of the tunnel pipe.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of the testing tool of the present invention;
FIG. 2 is a schematic structural diagram of the tunnel pipe pressure testing device of the present invention;
fig. 3 is a schematic structural diagram of the tunnel pipe pressure testing device of the present invention in use.
In the figure: 1. a pressure-bearing member; 11. sealing the end; 12. an end cap; 13. a pressure-bearing section; 2. a pressure detecting member; 3. a pressurizing interface; 4. a water injection port; 5. an exhaust port; 6. a workpiece; 7. a slider; 8. a loop flange.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the disclosed embodiments are merely exemplary of the invention, and are not intended to limit the invention to the precise embodiments disclosed. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present 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.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as the case may be, by those of ordinary skill in the art.
The technical solution of the present invention will be specifically described below with reference to the accompanying drawings.
Example 1:
as shown in fig. 1, the utility model provides a test fixture, including pressure-bearing member 1 and pressure detection spare 2, form the test chamber that is used for carrying out the pressure test in the pressure-bearing member 1, the both ends of pressure-bearing member 1 are enclosed construction, and pressure detection spare 2 is located the pressure-bearing member 1 pipe wall and can detect pressure-bearing member 1 internal pressure.
Because there is the test chamber inside the pressure-bearing member 1, consequently will need carry out the equipment that external pressure detected and place in this test intracavity can, the pressure value that the pressure detection piece 2 that is located on the pressure-bearing member 1 this moment can real-time detection test intracavity to help judges whether the external pressure of the equipment that waits to detect tolerates the condition and accords with the designing requirement.
In this embodiment, the whole test fixture is a horizontally arranged bar structure, and a pressurizing interface 3 is arranged on a side wall of the test fixture.
The pressure-increasing connection 3 can be used to assist in adjusting the pressure in the pressure-containing member 1.
When the test tool is used, in order to conveniently simulate the use environment of the tunnel pipe, liquid such as water can be injected into the test cavity of the test tool. Specifically, the side wall of the pressure bearing member 1 is provided with a water injection port 4 and an air exhaust port 5, and the water injection port 4 and the air exhaust port 5 are located on the same side of the pressure bearing member 1.
The preliminary pressurization treatment of test chamber can be realized to the mode of injected water in to the test chamber through water filling port 4 to the operating condition of simulation tunnel pipe conveniently carries out the external pressure test to it. The exhaust port 5 which is positioned on the same side with the water filling port 4 can ensure that the test cavity can be filled with water.
As an optional embodiment, the pressure-bearing member 1 comprises a seal head 11, an end cover 12 and a pressure-bearing pipe, the pressure-bearing pipe comprises at least one pressure-bearing section 13, the pressure-bearing section 13 is of a tubular structure, and all the pressure-bearing sections 13 are connected end to end; the end sockets 11 and the end covers 12 are respectively positioned at two ends of the pressure bearing pipe. The water injection port 4 and the exhaust port 5 are both positioned on the pressure-bearing section 13.
The length of the bearing pipe can be adjusted adaptively according to the number of the bearing sections 13, so that the testing tool can meet the detection requirements of tunnel pipe workpieces 6 of various specifications, and has the advantages of low cost and good compatibility.
As an alternative embodiment, the number of the pressure-bearing segments 13 is at least two, and two adjacent pressure-bearing segments 13 are connected through flange sealing.
The two adjacent pressure-bearing sections 13 can be hermetically connected through the flange, so that water leakage or pressure relief at the joint is avoided; simultaneously, the structure is convenient and fast to assemble and disassemble, and has the advantages of low cost and high efficiency.
Specifically, the pressure-bearing section 13 has a hollow cylindrical structure. In order to ensure the sealing performance of the connecting part, an O-shaped ring is arranged at the joint of two adjacent bearing sections 13.
As an alternative embodiment, the end cap 12 is connected to the pressure-bearing pipe by a flange and is axially sealed to the pressure-bearing pipe by an O-ring; the end socket 11 is connected with the pressure bearing pipe through a flange.
In use, to avoid leakage or venting at the end cap 12, the end cap 12 portion may be heavily sealed by an O-ring.
Example 2:
as shown in fig. 2-3, the utility model provides a tunnel pipe pressure test device, including any one of the aforesaid test fixture, wait to detect that work piece 6 is located the test intracavity and wait to detect and have the clearance between the periphery lateral wall of work piece 6 and the inside wall of pressure-bearing member 1.
A certain gap exists between the inner side wall of the testing device and the outer side wall of the workpiece 6 to be detected, and the detection of the external pressure of the workpiece 6 can be realized through the gap.
As an optional embodiment, the workpiece detection device further comprises at least two sliding blocks 7, all the sliding blocks 7 are located in the pressure bearing member 1 and can slide along the inner side wall of the pressure bearing member 1, and the workpiece 6 to be detected can be inserted into the pressure bearing member 1 through the sliding blocks 7.
The sliding block 7 can help to support the workpiece 6, ensure that the workpiece 6 is always in a horizontal state in the detection process, and simultaneously can also avoid the deformation of the tunnel pipe workpiece 6 in the detection process due to self weight, thereby ensuring the bus degree of the tunnel pipe.
Specifically, the sliding block 7 may be a pulley structure, and the pulley may be fixed on the tunnel pipe workpiece 6 by binding.
As an alternative embodiment, the end of the workpiece 6 is provided with a loop flange 8, and the workpiece 6 is fixedly connected with one end of the pressure bearing member 1 in the axial direction through the loop flange 8.
The workpiece 6 can be fixed in the pressure-bearing member 1 under the action of the loop flange 8, meanwhile, the workpiece 6 is sealed, and the water in the test cavity is prevented from entering the workpiece 6 to influence the accuracy of the detection result.
As an alternative embodiment, the pressure bearing member 1 is a tubular structure and the angle between the line of the axis of the pressure bearing member 1 and the horizontal plane is not more than 5 °. In order to ensure the accuracy of the detection result and avoid the deformation of the tunnel pipe workpiece 6 during the detection process, it is necessary to ensure that the pressure-bearing member 1 for detection is in a horizontal or nearly horizontal state as much as possible.
Specifically, it is generally required to ensure that the included angle between the pressure-bearing member 1 and the horizontal plane does not exceed 4 ° in use, that is, the included angle between the axis of the tunnel pipe workpiece 6 located inside the pressure-bearing member 1 and the horizontal plane does not exceed 4 ° in detection.
The tunnel pipe pressure testing device can be flexibly assembled, disassembled and spliced according to the length and the size of the tunnel pipe workpiece 6 to be detected, so that the tunnel pipe pressure testing device is suitable for tunnel pipe structures with different sizes.
Example 3:
the following describes the use of the embodiment under the condition of the test pressure of 0.4-0.5 MPa, with the tunnel tube having a length of 2000-10000 mm and a diameter of 300-500 mm as the test object:
(a) Designing a test tool:
designing the specification of the test tool according to the length of the tunnel pipe to obtain an assembly drawing of the test tool;
(b) Assembling:
according to the assembly drawing, pressure-bearing sections 13 with proper quantity and size are selected and assembled to obtain the test tool, at the moment, the end cover 12 is fixedly connected with the pressure-bearing sections 13 through bolts, and the end enclosure 11 can be partially sealed through bolts and O-shaped rings;
(c) First pressurization:
opening the water filling port 4 and the exhaust port 5, closing the water outlet and the pressurization interface 3 at the same time, and performing water filling treatment on the pressure-bearing member 1; when water overflows from the exhaust port 5, indicating that the water is filled, then closing the exhaust port 5 and the water filling port 4, opening the pressurization interface 3 for slow pressurization, stopping pressurization when the reading of the pressure gauge reaches a target value, closing the pressurization interface 3, and maintaining pressure;
(d) Pressure maintaining for the first time:
in the pressure maintaining process, whether the reading of the pressure gauge changes or not is paid attention to, if the reading of the pressure gauge is kept unchanged within the pressure maintaining time, the external pressure testing tool is well sealed, and the external pressure test of the subsequent workpiece 6 can be carried out;
(e) First pressure relief:
the water in the pressure-bearing member 1 is completely discharged through the pressurizing connector 3;
(f) Tunnel pipe installation:
pushing a tunnel pipe to be detected into a testing tool through a bottom sliding block 7, connecting the tunnel pipe with an end cover 12 on a pressure-bearing member 1 through a loop flange 8 positioned at the end part of the tunnel pipe through a bolt, and sealing the connecting end parts of the tunnel pipe and the pressure-bearing member through an O-shaped ring;
(g) And (3) second pressurization:
c, water injection and pressurization are carried out repeatedly, when the pressure is increased to the target pressure, pressurization is stopped, the pressurization port 3 is closed, and pressure maintaining is carried out;
(h) And (5) second pressure maintaining:
d, repeating the pressure maintaining process of the step d;
(i) And (3) second pressure relief:
at this time, the detection process is completed, and the water in the pressure bearing member 1 can be completely discharged through the drain pipe.
It should be noted that the principle of the tool design in the step (a) is to ensure the detachability, the convenience of assembly and the sealing performance of the tool, and generally, the pressure-bearing section 13 is composed of 2 to 3 sections, and each section is 3000 to 4000mm long so as to meet the compatibility requirements of pipelines with different lengths;
in addition, the test tool assembled in the step (b) is shown in fig. 1; the end cover 11 is connected with the pressure-bearing sections 13 through flanges, the end faces of the end cover are axially sealed through O-shaped rings, the two adjacent pressure-bearing sections 13 are connected through flanges, and the end cover 12 and the pressure-bearing section 132 are axially sealed through O-shaped rings and connected through flanges; wherein, the pressure-bearing section 13 is provided with a water filling port 4, an exhaust port 5, a pressure gauge connector and a pressurizing connector 3.
Further, in the first pressurization process in the step (c), the pressure can be increased to 1/2 value of the target pressure, and whether the interface of the test tool is abnormal or not is observed: if no abnormity exists, the pressurization is continued; if the leakage condition occurs, the test tool needs to be further sealed.
Further, in the first pressure maintaining process in the step (d), if the pressure is reduced and the reduced value is within 0.02MPa, the pressure maintaining effect of the tool is defaulted to meet the design requirement, and meanwhile, the pressure reduction value of the device during no-load needs to be considered during the external pressure test of the subsequent workpiece 6 for compensation.
Furthermore, in the step (f), the sliding blocks 7 need to be bound on the tunnel tube to be tested, the size and the number of the sliding blocks 7 are related to the diameter and the length of the tunnel tube, and the sliding blocks 7 are ensured to be enough to support the tunnel tube to keep the tunnel tube horizontal in the external pressure testing process, and meanwhile, the tunnel tube is not influenced, so that the tunnel tube is deformed due to the overweight.
Example 4:
the external pressure test of the 5A06 aluminum alloy tunnel tube with the length of 6000mm and the inner diameter of 320mm is taken as an example, and the test pressure in the example is 0.5MPa.
(a) Designing a test tool:
the pressure-bearing section 13 is designed into 2 sections, the length of each section is 3500mm, and the diameter is 550mm;
(b) Assembling:
assembling the hydraulic test tool according to an assembly drawing, wherein the end cover 12 is connected with the pressure-bearing section 13 through a bolt, all connecting parts of the test tool are sealed through O-shaped rings, and the compression ratio of the sealing rings is controlled to be 20% -27%;
(c) First pressurization:
opening a water filling port 4 and an exhaust port 5, closing a water outlet and a pressurizing connector 3 at the same time, and performing water filling treatment on the pressure-bearing member 1; when water overflows from the exhaust port 5, indicating that the water is filled, closing the exhaust port 5 and the water filling port 4, opening the pressurization interface 3 for slow pressurization, stopping pressurization when the reading of the pressure gauge reaches 0.2MPa, observing whether each interface is abnormal, continuously pressurizing to 0.5MPa after inspection, closing the pressurization interface 3, and maintaining the pressure;
(d) Pressure maintaining for the first time:
maintaining the pressure for 30min under 0.5MPa, observing whether the reading of the pressure gauge changes, and if the reading of the pressure gauge keeps unchanged within the pressure maintaining time, the external pressure testing tool has good sealing performance and can perform the subsequent external pressure test on the workpiece 6;
(e) Pressure relief for the first time:
the water in the pressure-bearing member 1 is completely discharged through the pressurizing connector 3 (used as a water outlet at this time);
(f) Tunnel pipe installation:
pushing the tunnel pipe into a testing tool through 2 sliding blocks 7 positioned at the bottom of the tunnel pipe, wherein a loop flange 8 is arranged at the end part of the tunnel pipe, the tunnel pipe is connected and fixed with an end cover 12 through the loop flange 8 and a bolt, and the joint of the tunnel pipe and the end cover is sealed through an O-shaped ring;
(g) And (3) second pressurization:
c, water injection and pressurization are carried out repeatedly, when the pressure is increased to 0.5MPa, pressurization is stopped, the pressurization connector 3 is closed, and pressure maintaining is carried out;
(h) And (5) second pressure maintaining:
maintaining the pressure for 30min under 0.5MPa, and observing and recording the reading of a pressure gauge;
(i) And (3) second pressure relief:
at this time, the detection process is completed, and the water in the pressure bearing member 1 can be completely discharged through the drain pipe.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The test tool is characterized by comprising a pressure bearing member (1) and a pressure detection piece (2), wherein a test cavity for performing pressure test is formed in the pressure bearing member (1), two ends of the pressure bearing member (1) are of closed structures, and the pressure detection piece (2) is located on the pipe wall of the pressure bearing member (1) and can detect the pressure in the pressure bearing member (1).
2. The test tool according to claim 1, characterized in that a pressurizing connector (3) is further arranged on the side wall of the pressure-bearing member (1).
3. The test tool according to claim 1, wherein a water injection port (4) and an air exhaust port (5) are arranged on the side wall of the pressure bearing member (1), and the water injection port (4) and the air exhaust port (5) are located on the same side of the pressure bearing member (1).
4. The test tool according to claim 1, wherein the bearing member (1) comprises a seal head (11), an end cover (12) and a bearing pipe, the bearing pipe comprises at least one bearing section (13), the bearing section (13) is of a tubular structure, and all the bearing sections (13) are connected end to end; the end sockets (11) and the end covers (12) are respectively positioned at two ends of the pressure bearing pipe.
5. The test tool according to claim 4, characterized in that the number of the pressure-bearing sections (13) is at least two, and two adjacent pressure-bearing sections (13) are connected through a flange seal.
6. The test tool according to claim 4, wherein the end cover (12) is connected with the pressure-bearing pipe through a flange and is axially sealed with the pressure-bearing pipe through an O-shaped ring;
the seal head (11) is connected with the pressure bearing pipe through a flange.
7. The tunnel pipe pressure testing device is characterized by comprising the testing tool of any one of claims 1 to 6, wherein a workpiece (6) to be tested is located in the testing cavity, and a gap exists between the outer peripheral side wall of the workpiece (6) to be tested and the inner side wall of the pressure-bearing member (1).
8. The tunnel pipe pressure testing device according to claim 7, further comprising at least two sliding blocks (7), wherein all the sliding blocks (7) are located in the bearing member (1) and can slide along the inner side wall of the bearing member (1), and the workpiece (6) to be tested can be inserted into the bearing member (1) through the sliding blocks (7).
9. The tunnel pipe pressure testing device according to claim 7, characterized in that the end of the workpiece (6) is provided with a loose flange (8), and the workpiece (6) is fixedly connected with one end of the bearing member (1) in the axial direction through the loose flange (8).
10. The tunnel pipe pressure testing apparatus according to claim 7, characterized in that said pressure bearing member (1) is a tubular structure and the angle between the line of the axis of said pressure bearing member (1) and the horizontal plane is not more than 5 °.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221129788.2U CN217542686U (en) | 2022-05-11 | 2022-05-11 | Test fixture and tunnel pipe pressure test device with same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221129788.2U CN217542686U (en) | 2022-05-11 | 2022-05-11 | Test fixture and tunnel pipe pressure test device with same |
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| CN217542686U true CN217542686U (en) | 2022-10-04 |
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| CN202221129788.2U Active CN217542686U (en) | 2022-05-11 | 2022-05-11 | Test fixture and tunnel pipe pressure test device with same |
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| CN (1) | CN217542686U (en) |
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