CN216622020U - Bending fatigue test device for bent pipeline piece - Google Patents
Bending fatigue test device for bent pipeline piece Download PDFInfo
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- CN216622020U CN216622020U CN202123093804.5U CN202123093804U CN216622020U CN 216622020 U CN216622020 U CN 216622020U CN 202123093804 U CN202123093804 U CN 202123093804U CN 216622020 U CN216622020 U CN 216622020U
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Abstract
The utility model relates to a bending fatigue test device for a bent pipeline piece, which comprises a switching assembly and a test bed, wherein the switching assembly is arranged on the test bed and comprises a first joint, a switching piece, a straight-through pipe joint and a second joint, the first joint is arranged on one side of the switching piece, a switching channel is arranged in the switching piece, the first joint is communicated with a first end of the switching channel, a second end of the switching channel is communicated with the first end of the pipeline piece through the straight-through pipe joint, and the second end of the pipeline piece is provided with the second joint. The switching assembly is arranged on the test bed, so that the problem that a bending fatigue test device is lacked for a bending pipeline piece is effectively solved, meanwhile, the switching channels with different angles are arranged in the switching piece, so that the test device is suitable for the bending pipeline pieces with different bending angles, the applicability and the universality of the test device are favorably improved, and in addition, the bending pipeline piece is in threaded connection with the switching piece, so that the test device has the advantages of convenience in disassembly and replacement, convenience in operation and the like.
Description
Technical Field
The utility model belongs to the technical field of bending fatigue tests of pipeline pieces, and particularly relates to a bending fatigue test device for a bent pipeline piece.
Background
The bending fatigue test tool for the elbow pipeline assembly is a common component of an aircraft hydraulic system, and the bending fatigue test is an important mode for testing the bending fatigue test resistance of a pipeline piece and is one of important examination modes of various tests of the pipeline piece. The common bending fatigue test equipment and tool are generally used for checking straight-through or three-way pipe joint pipeline assemblies, but for bent-through pipeline pieces, a proper tool is not available at present for carrying out bending fatigue tests. Therefore, it is necessary to design a stable and reliable bending fatigue test device for the bending fatigue test of the bending pipeline.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, the utility model provides a bending fatigue test device for a bent pipeline piece, which effectively solves the problem that the bent pipeline piece lacks a bending fatigue test device by arranging a switching assembly on a test bed, and meanwhile, the test device can be suitable for bent pipeline pieces with different bending angles by arranging switching channels with different angles in the switching assembly, so that the applicability and the universality of the test device can be improved.
The utility model adopts the technical scheme that the bending fatigue test device for the bent pipeline piece comprises a switching component and a test bed, wherein the switching component comprises a first joint, a switching piece, a straight-through pipe joint and a second joint, the first joint is arranged on a first side surface of the switching piece, a switching channel is arranged in the switching piece, the switching channel comprises a first channel, a second channel and a third channel, the first joint is communicated with the first channel, the first channel is communicated with the second channel, the second channel is communicated with the third channel, a first end of the third channel is provided with a connecting port, the straight-through pipe joint is arranged on the connecting port, the straight-through pipe joint is communicated with the third channel, a pipeline piece is arranged on the straight-through pipe joint, and the first end of the pipeline piece is communicated with the first end of the straight-through pipe joint through nut, the second end of the pipeline piece is provided with the second joint; the switching subassembly is located on the test bench, just the switching subassembly passes through first joint and second joint are fixed in on the test bench, and with hydraulic system in the test bench is linked together.
Further, the central axis of the third passageway is collinear with the centerline axis of the bend in the tubing.
Preferably, the connecting port is provided with an internal thread matched with the straight-through pipe joint.
In another aspect of the present invention, a bending fatigue test apparatus for a bent pipeline member is provided, which includes an adapting assembly and a test bed, wherein the adapting assembly includes a first joint, an adapting member, a straight pipe joint, a high pressure hose and a second joint, the first joint is disposed on a first side surface of the adapting member, a first joint channel is disposed in the first joint, a joint channel opening is disposed at a first end of the first joint channel, the straight pipe joint is disposed at the joint channel opening, the first joint channel is communicated with the straight pipe joint, the straight pipe joint is communicated with a first end of the high pressure hose, an adapting channel is disposed in the adapting member, a first end of a bending portion in the pipeline member penetrates through the adapting channel to be fixedly connected with the adapting member, and the bending portion of the pipeline member is communicated with a second end of the high pressure hose, the first end of the pipeline piece is provided with the second joint; the switching subassembly is located on the test bench, just the switching subassembly passes through first joint and second joint are fixed in on the test bench, and with hydraulic system in the test bench is linked together.
Further, the first joint channel is in an L-shaped cross section shape.
Preferably, the central axis of the adaptor channel is collinear with the midline axis of the bend in the tubing part.
The utility model has the characteristics and beneficial effects that:
1. according to the bending fatigue test device for the bent pipeline piece, the switching assembly is arranged on the test bed, so that the problem that the bent pipeline piece is lack of the bending fatigue test device is effectively solved, meanwhile, the bending fatigue test device can be used for bending fatigue tests of pipeline pieces of different specifications, and the universality of the test device is improved.
2. According to the bending fatigue test device for the bent pipeline piece, the switching channels with different angles are arranged in the switching piece, so that the test device is suitable for the bent pipeline piece with different bending angles, and the applicability and the universality of the test device are improved.
3. According to the bending fatigue test device for the bent pipeline piece, the bent pipeline piece is in threaded connection with the adapter piece, so that the bent pipeline piece with different specifications and models can be detached and replaced conveniently, the test efficiency can be improved, and the bending fatigue test device has the advantages of convenience and flexibility in use, convenience and convenience in operation and the like.
Drawings
FIG. 1 is a schematic view of the overall structure of a bending fatigue testing device for a bent pipeline piece according to embodiment 1 of the present invention;
FIG. 2 is a schematic view of the overall structure of a bending fatigue testing device for a bent pipeline piece according to embodiment 2 of the present invention;
fig. 3 is a schematic view of the installation of embodiment 1 of the present invention on a test bench.
The main reference numbers:
a switching component 1; a first joint 11; a first joint passage 111; an adaptor 12; a transfer passage 121; a first channel 1211; a second channel 1212; a third channel 1213; a connection port 122; a straight pipe joint 13; a second joint 14; a high-pressure hose 15; a test bed 2; a tailstock 21; a head-mount 22; a hydraulic system 23; a piping member 3; a curved portion 31; and a nut 4 is sleeved.
Detailed Description
The technical contents, structural features, attained objects and effects of the present invention are explained in detail below with reference to the accompanying drawings.
The utility model provides a bending fatigue test device for a bending pipeline piece, which comprises a switching component 1 and a test bed 2, wherein the switching component 1 comprises a first joint 11, a switching piece 12, a straight-through pipe joint 13 and a second joint 14, the first joint 11 is arranged on a first side surface of the switching piece 12, a switching channel 121 is arranged in the switching piece 12, the switching channel 121 comprises a first channel 1211, a second channel 1212 and a third channel 1213, the first joint 11 is communicated with the first channel 1211, the first channel 1211 is communicated with the second channel 1212, the second channel 1212 is communicated with the third channel 1213, a connecting port 122 is arranged at a first end of the third channel 1213, the straight-through pipe joint 13 is arranged on the connecting port 122, the straight-through pipe joint 13 is communicated with the third channel 1213, the pipeline piece 3 is arranged on the straight-through pipe joint 13, and the first end of the pipeline piece 3 is communicated with the first end of the straight-through pipe joint 13 through a nut 4, the second end of pipeline spare 3 is equipped with second joint 14, and switching subassembly 1 is located on test bench 2, and switching subassembly 1 is fixed in on test bench 2 through first joint 11 and second joint 14, and is linked together with hydraulic system 23 in test bench 2.
In a preferable mode, the central axis of the third channel 1213 is collinear with the central axis of the bending portion 31 in the pipeline member 3, and the adapter channels with different angles are arranged in the adapter member, so that the testing device is suitable for the elbow pipeline members with different bending angles, and the applicability and the universality of the testing device are improved.
Preferably, the connection opening 122 is provided with an internal thread adapted to the through pipe joint 13.
In another aspect of the present invention, there is provided a bending fatigue testing apparatus for a bent pipeline member, as shown in fig. 2, which includes an adapting assembly 1 and a testing table 2, wherein the adapting assembly 1 includes a first joint 11, an adapting member 12, a straight-through pipe joint 13, a high-pressure hose 15 and a second joint 14, the first joint 11 is disposed on a first side surface of the adapting member 12, a first joint channel 111 is disposed in the first joint 11, the first joint channel 111 is L-shaped, a first end of the first joint channel 111 is provided with a joint channel opening, the joint channel opening is provided with the straight-through pipe joint 13, the first joint channel 111 is communicated with the straight-through pipe joint 13, the straight-through pipe joint 13 is communicated with a first end of the high-pressure hose 15, the adapting member 12 is provided with an adapting channel, a first end of a bending portion 31 of the pipeline member 3 is fixedly connected with the adapting member 12 through the adapting channel, the bending portion 31 of the pipeline member 3 is communicated with a second end of the high-pressure hose 15, and the first end of pipeline spare 3 is equipped with second joint 14, and switching subassembly 1 is located on test bench 2, and switching subassembly 1 is fixed in on test bench 2 through first joint 11 and second joint 14, and is linked together with hydraulic system 23 in test bench 2.
In a preferred mode, the central axis of the switching channel is collinear with the central axis of the bending part 31 in the pipeline part 3, and the switching channels with different angles are arranged in the switching part, so that the testing device is suitable for the elbow pipeline parts with different bending angles, and the applicability and the universality of the testing device are improved.
The method comprises the following specific operation steps:
example 1
As shown in fig. 1 and 3, the bending fatigue test device for a bent pipeline piece of the present invention includes an adapter assembly 1 and a test bed 2, wherein the adapter assembly 1 is disposed on the test bed 2, and the adapter assembly 1 is fixed on the test bed 2 through a first joint 11 and a second joint 14, and is communicated with a hydraulic system 23 in the test bed 2.
In the specific working process, firstly, the first joint 11 is installed, the first end of the first joint 11 is connected with the tailstock 21 of the test bed 2 through threads, the second end of the first joint 11 is connected with the first end of the switching channel 121 of the switching piece 12 through threads, hydraulic oil can be communicated with the switching piece 12, the first end of the straight-through pipe joint 13 is connected with the second end of the switching channel 121 and structurally sealed through a built-in rubber gasket, the second end of the straight-through pipe joint 13 is connected with the first end of the pipeline piece 3, at the moment, the headstock 22 on the test bed 2 is moved to a proper position, and the second end of the pipeline piece 3 is connected with the headstock 22 of the test bed 2 through the second joint 14. At this time, two strain gauges are attached to the pipeline piece 3 along the axial direction, the two strain gauges are distributed at 90 degrees to measure the bending strain of the pipeline piece, and the strain is given according to different materials, different pipe diameters and different wall thicknesses. Then, the position of the bearing in the head seat 22 is adjusted to ensure that the strain value measured by the strain gauge reaches a given strain value. At this time, the adapter assembly 1 is communicated with a hydraulic system 23 in the test bed 2, and hydraulic oil is supplied to the test pipeline piece to reach specified pressure such as 21MPa, 28MPa and the like. The starting test bench 2 rotates to drive the pipeline piece 3 to rotate, then the pipeline piece 3 is subjected to bending fatigue test, and the test bench is suitable for the bending fatigue test of the pipeline test piece with large diameter and low strength.
Example 2
As shown in fig. 2, the bending fatigue test device for a bent pipeline piece of the present invention includes an adapter assembly 1 and a test bed 2, wherein the adapter assembly 1 is disposed on the test bed 2, and the adapter assembly 1 is fixed on the test bed 2 through a first joint 11 and a second joint 14, and is communicated with a hydraulic system 23 in the test bed 2.
In the specific working process, firstly, the first joint 11 is installed, the first end of the first joint 11 is connected with the tailstock 21 of the test bed 2 through threads, the second end of the first joint 11 is fixedly connected with the adapter 12 through threads, a first joint channel 111 is arranged in the first joint 11, the first joint channel 111 is connected with the through pipe joint 13, meanwhile, the first end of the bending part 31 in the pipeline piece 3 penetrates through the adapter channel 121 and is fixedly connected with the adapter 12 through the outer nut 4, secondly, the first end of the high-pressure hose 15 is connected with the through pipe joint 13, the second end of the high-pressure hose 15 is connected with the bending part 31 of the pipeline piece 3, at the moment, the headstock 22 on the test bed 2 is moved to a proper position, and the second end of the pipeline piece 3 is connected with the headstock 22 of the test bed 2 through the second joint 14. At this time, two strain gauges are attached to the pipeline piece 3 along the axial direction, the two strain gauges are distributed at 90 degrees to measure the bending strain of the pipeline piece, and the strain is given according to different materials, different pipe diameters and different wall thicknesses. Then, the position of the bearing in the head seat 22 is adjusted to ensure that the strain value measured by the strain gauge reaches a given strain value. At this time, the adapter assembly 1 is communicated with a hydraulic system 23 in the test bed 2, and hydraulic oil is introduced into the test pipeline piece to reach specified pressure such as 21MPa, 28MPa and the like. The starting test bench 2 rotates to drive the pipeline piece 3 to rotate, and then the pipeline piece 3 is subjected to bending fatigue test.
According to the utility model, hydraulic oil is not introduced into the adaptor, when the pipeline piece 3 is connected with the adaptor 12, the problems of sealing and the like do not need to be considered, and meanwhile, the hydraulic system 23 in the test bed 2 is connected with the pipeline piece 3 through the first connector 11, the high-pressure hose 15 and the straight-through pipe connector 13, so that stable pressure supply for the pipeline piece 3 is realized. The bending fatigue testing device is suitable for the bending fatigue test of the pipeline test piece with smaller pipe diameter and larger strength, and can be used for bending the test piece with longer joint.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the spirit of the present invention shall fall within the protection scope defined by the claims of the present invention.
Claims (6)
1. A bending fatigue test device for a bending pipeline piece is characterized by comprising an adapter assembly and a test bed,
the adapter assembly comprises a first joint, an adapter, a straight-through pipe joint and a second joint, wherein the first joint is arranged on a first side face of the adapter, a switching channel is arranged in the adapter and comprises a first channel, a second channel and a third channel, the first joint is communicated with the first channel, the first channel is communicated with the second channel, the second channel is communicated with the third channel, a connecting port is arranged at a first end of the third channel, the straight-through pipe joint is arranged on the connecting port and is communicated with the third channel, a pipeline piece is arranged on the straight-through pipe joint, the first end of the pipeline piece is communicated with the first end of the straight-through pipe joint through a sleeve nut, and the second joint is arranged at a second end of the pipeline piece;
the switching subassembly is located on the test bench, just the switching subassembly passes through first joint and second joint are fixed in on the test bench, and with hydraulic system in the test bench is linked together.
2. The curved line member bending fatigue testing apparatus of claim 1, wherein the central axis of the third passageway is collinear with a centerline axis of a bend in the line member.
3. The bending fatigue testing device for the bent pipeline pieces according to claim 1, wherein the connecting port is provided with an internal thread matched with the straight-through pipe joint.
4. A bending fatigue test device for a bending pipeline piece is characterized by comprising an adapter assembly and a test bed,
the switching assembly comprises a first joint, a switching piece, a straight-through pipe joint, a high-pressure hose and a second joint, wherein the first joint is arranged on a first side face of the switching piece, a first joint channel is arranged in the first joint, a joint channel opening is formed in the first end of the first joint channel, the straight-through pipe joint is arranged at the joint channel opening, the first joint channel is communicated with the straight-through pipe joint, the straight-through pipe joint is communicated with the first end of the high-pressure hose, the switching piece is internally provided with a switching channel, the first end of a bent part in the pipeline piece penetrates through the switching channel to be fixedly connected with the switching piece, the bent part of the pipeline piece is communicated with the second end of the high-pressure hose, and the second joint is arranged at the first end of the pipeline piece;
the switching subassembly is located on the test bench, just the switching subassembly passes through first joint and second joint are fixed in on the test bench, and with hydraulic system in the test bench is linked together.
5. The curved line member bending fatigue testing apparatus of claim 4, wherein the first joint channel is L-shaped in cross-section.
6. The curved line member bending fatigue testing apparatus of claim 4, wherein a central axis of the adaptor channel is collinear with a centerline axis of a bend in the line member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123093804.5U CN216622020U (en) | 2021-12-10 | 2021-12-10 | Bending fatigue test device for bent pipeline piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123093804.5U CN216622020U (en) | 2021-12-10 | 2021-12-10 | Bending fatigue test device for bent pipeline piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216622020U true CN216622020U (en) | 2022-05-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123093804.5U Active CN216622020U (en) | 2021-12-10 | 2021-12-10 | Bending fatigue test device for bent pipeline piece |
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| Country | Link |
|---|---|
| CN (1) | CN216622020U (en) |
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2021
- 2021-12-10 CN CN202123093804.5U patent/CN216622020U/en active Active
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