CN213903107U - Test system for testing loading deformation of pipeline - Google Patents
Test system for testing loading deformation of pipeline Download PDFInfo
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- CN213903107U CN213903107U CN202022442033.5U CN202022442033U CN213903107U CN 213903107 U CN213903107 U CN 213903107U CN 202022442033 U CN202022442033 U CN 202022442033U CN 213903107 U CN213903107 U CN 213903107U
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Abstract
The utility model discloses a test system for testing pipeline loading warp, include: a test piece clamp for applying a load to a test tube, comprising: the device comprises a supporting frame, an upper support fixed on the supporting frame and a sliding support positioned below the upper support; the sliding support is slidably mounted on the support frame; the upper end of the sliding support is provided with a lower bearing bent opening, and the lower end of the upper support is provided with an upper bearing bent opening facing the lower bearing bent opening; a test pipeline is arranged between the lower bearing elbow and the upper bearing elbow; a drive member for driving the shoe to apply a load to the test conduit; a load testing member for testing the load applied by the driving member; and the deformation testing component is used for testing the deformation signal of the testing pipeline.
Description
Technical Field
The utility model relates to a test device for test pipeline loading warp belongs to experimental test technical field.
Background
The oil and gas pipeline is often subjected to the combined action of various loads in the service process, and the pipeline is subjected to the combined action of external loads such as covering soil layers, rock hard objects and the like besides internal pressure. External loads can cause bending stress to the pipeline and cause deformation of the cross section in an elliptic mode, and excessive concave deformation can cause structural damage to the pipeline, so that normal use of the pipeline is affected. In order to guarantee the service safety of the oil and gas pipeline, the loading deformation of the pipeline needs to be measured.
At present, effective equipment for meeting the performance test of a full-size pipeline is not available at home and abroad.
SUMMERY OF THE UTILITY MODEL
In view of the above insufficiency, the utility model discloses an object is to provide a test system for testing pipeline loading is out of shape to can realize the simulation and the observation of the external load that the pipeline receives, provide technical means for the test of pipeline loading is out of shape.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a testing system for testing loading deformation of a pipe, comprising:
a test piece clamp for applying a load to a test tube, comprising: the device comprises a supporting frame, an upper support fixed on the supporting frame and a sliding support positioned below the upper support; the sliding support is slidably mounted on the support frame; the upper end of the sliding support is provided with a lower bearing bent opening, and the lower end of the upper support is provided with an upper bearing bent opening facing the lower bearing bent opening; a test pipeline is arranged between the lower bearing elbow and the upper bearing elbow;
a drive member for driving the shoe to apply a load to the test conduit;
a load testing member for testing the load applied by the driving member;
and the deformation testing component is used for testing the deformation signal of the testing pipeline.
As a preferred embodiment, the inner surface of the lower bearing elbow is also provided with a lower rubber block; the inner surface of the upper bearing bent opening is also provided with an upper rubber block; the elastic modulus of the lower rubber block and the upper rubber block is 0.9-1.2 times of that of soil.
In a preferred embodiment, the central angle of the lower bearing elbow corresponds to 140 degrees to 160 degrees, and the diameter of the lower bearing elbow is 1.2 times of the diameter of the test pipeline; the central angle corresponding to the upper bearing bent opening is 140-160 degrees.
In a preferred embodiment, the length of the lower rubber block in the circumferential direction is greater than the length of the upper rubber block in the circumferential direction, and the lower rubber block and the upper rubber block are arranged in the center.
In a preferred embodiment, the upper support and the sliding support are formed by welding an arc steel plate and a plane steel plate with equal thickness.
As a preferred embodiment, the supporting frame comprises a frame base, two guide uprights, and a fixed cross-beam; the two guide upright posts are fixed on the frame base in an opposite arrangement mode; the fixed cross beam is fixedly connected above the frame base; the upper support seat is positioned between the two guide upright posts and is fixedly connected with the fixed cross beam; the inner side wall of the guide upright post is provided with a sliding rail for the sliding support to slide; the driving component is supported between the sliding support and the frame base to jack the sliding support.
In a preferred embodiment, the support frame is formed by welding rectangular closed steel.
As a preferred embodiment, the drive means comprises a jacking device having a working stroke of not less than 0.2 times the diameter of the test conduit.
As a preferred embodiment, the load testing member comprises a force sensor arranged between the jacking device and the frame foundation.
As a preferred embodiment, the deformation testing member comprises a strain gauge attached to the outer wall of the testing pipeline and a resistance strain gauge electrically connected with the strain gauge; the resistance strain gauge is connected with a control device provided with a display part.
Has the advantages that:
the utility model discloses a test system for testing pipeline loading deformation in an embodiment utilizes test piece anchor clamps to carry out the centre gripping with test pipeline, utilize drive component drive sliding support to extrude test pipeline and apply load, and then the external load that the simulation pipeline bore, and utilize deformation test component to obtain test pipeline by centre gripping extrusion in-process deformation signal, and then can simulate the bearing capacity test of pipeline under burying ground environment, realized the simulation and the observation of the external load that the pipeline receives, the test of deformation provides solution for pipeline loading.
Specific embodiments of the present invention are disclosed in detail with reference to the following description and the accompanying drawings, which specify the manner in which the principles of the invention may be employed. It should be understood that the embodiments of the present invention are not so limited in scope.
Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments, in combination with or instead of the features of the other embodiments.
It should be emphasized that the term "comprises/comprising" when used herein, is taken to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps or components.
Drawings
In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed to be 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 inventive exercise.
Fig. 1 is a schematic diagram of a testing system for testing loading deformation of a pipeline according to an embodiment of the present invention;
FIG. 2 is a schematic view of the specimen holder of FIG. 1.
Detailed Description
In order to make the technical solutions in the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 to 2, the present invention provides a testing system for testing loading deformation of a pipeline, including: a test piece fixture 100 for applying a load to the test tube, a driving member 200, a load testing member 300, a deformation testing member 600.
Wherein the test piece jig 100 includes: a support frame, an upper support 104 fixed on the support frame, and a sliding support 105 positioned below the upper support 104; the shoe 105 is slidably mounted on the support frame. The upper end of the sliding support 105 is provided with a lower bearing bent opening 106, and the lower end of the upper support 104 is provided with an upper bearing bent opening 102 facing the lower bearing bent opening 106; the lower bearing elbow 106 and the upper bearing elbow 102 are used for placing a test pipeline.
The drive member 200 is used to drive the shoe 105 to apply a load to the test pipe. The load test member 300 is used to test the load applied by the driving member 200. The deformation testing member 600 is used for testing the test pipeline deformation signal.
In the embodiment, the test system for testing the loading deformation of the pipeline clamps the test pipeline by using the test piece clamp 100, the driving member 200 drives the sliding support 105 to extrude the test pipeline to apply a load, so that the external load borne by the pipeline is simulated, the deformation signal in the process that the test pipeline is clamped and extruded is obtained by using the deformation test member 600, the bearing capacity test of the pipeline in a buried environment can be simulated, the simulation and observation of the external load borne by the pipeline are realized, and a solution is provided for the test of the loading deformation of the pipeline. In addition, the test piece fixture 100 can be placed in the open air, and the deformation state of the test pipeline can be directly observed.
In this embodiment, a lower rubber block 109 is further disposed on the inner surface of the lower bearing elbow 106. An upper rubber block 108 is also arranged on the inner surface of the upper bearing elbow 102. In order to better simulate a real buried environment, the elastic modulus of the upper rubber block 108 and the lower rubber block 109 is similar to that of soil, and specifically, the elastic modulus of the lower rubber block 109 and the upper rubber block 108 is 0.9-1.2 times of that of the soil. The length of the lower rubber block 109 in the circumferential direction is larger than the length of the upper rubber block 108 in the circumferential direction. The lower rubber block 109 may cover the entire inner arc surface of the lower load-bearing elbow 106, and its length is the same as the length of the inner arc surface. Therefore, the lower rubber block 109 can be used for simulating the formation annular pressure, and the upper rubber block 108 is used for simulating the local formation pressure, so that the real simulation under different formation environment conditions can be realized. The lower rubber block 109 and the upper rubber block 108 are centrally located. The upper rubber block 108 and the lower rubber block 109 are used as load transmission media and are arranged between the test pipeline and the upper support 104 and the sliding support 105, so that the load can be effectively dispersed.
In this embodiment, the lower load bearing bend 106 and the upper load bearing bend 102 are both arcuate. The central angle corresponding to the lower bearing bend 106 is 140-160 degrees. The lower load bearing bend 106 and the upper load bearing bend 102 are substantially identical and have a diameter of between 0.8 and 1.5 times the diameter of the test tubing in order to provide full formation load pressure to the test tubing. Specifically, the diameter of the lower load bearing bend 106 and the upper load bearing bend 102 is 1.2 times the diameter of the test conduit. The central angle corresponding to the upper bearing bend 102 is 140-160 degrees.
Further, the upper support 104 and the sliding support 105 are formed by welding an arc steel plate and a flat steel plate with equal thickness. Wherein, the arc steel plate is welded at one end of the plane steel plate to form an upper support 104 or a sliding support 105. On the upper support 104, a circular arc steel plate is welded to the lower end of the flat steel plate, and on the sliding support 105, a circular arc steel plate is welded to the upper end of the flat steel plate. The arc length of the arc steel plate corresponds to the central angle of 150 degrees.
In this embodiment, the support frame is formed by welding rectangular closed steel. Specifically, the support frame includes a frame base 101, two guide posts 103, and a fixed cross member 107. The two guide posts 103 are fixed to the frame base 101 in an opposing manner. The fixed cross beam 107 is fixedly connected above the frame base 101. The upper support 104 is located between the two guide posts 103 and is fixedly connected with the fixed cross beam 107. The upper bracket 104 may be fixedly coupled to the fixed cross member 107 by fasteners. The inner side wall of the guide upright post 103 is provided with a sliding rail for the sliding support 105 to slide. The driving member 200 is supported between the sliding support 105 and the frame base 101 to support and lift up the sliding support 105.
The guide rail on the inner wall of the guide upright post 103 is a rail groove arranged on the inner wall, and the side wall of the sliding support 105 opposite to the guide upright post 103 is connected with a roller, so that the friction caused by sliding on the support frame is reduced, and the influence of the resistance in sliding on the load transferred to the test pipeline is reduced.
In the present embodiment, the driving member 200 includes a jacking device having a working stroke of not less than 0.2 times the pipe diameter of the test pipe. The jacking device may be a hydraulic jacking device (e.g., hydraulic cylinder, jack). The load testing member 300 includes a force sensor disposed between the jacking device and the frame base 101. The jacking equipment has the characteristics of small volume, light weight, small load fluctuation, high control precision and the like, the working stroke of the jacking equipment is not less than 20% of the diameter of the pipeline, and the transmitted load can be read by the force sensor.
In this embodiment, the deformation testing member 600 includes a strain gauge 400 attached to the outer wall of the testing pipe, and a resistance strain gauge 500 electrically connected to the strain gauge 400. The strain gage 400 may be a resistive strain gage 400. The plurality of resistance strain gauges 400 may be attached to different portions of the test pipe, thereby simultaneously measuring deformation information of different portions of the test pipe. The resistance strain gauge 500 is connected to a control device provided with a display unit. In particular, the control device may be a calculator with a display. The resistance strain gauge 500 may be connected to the control device through a network cable. The control device may also be electrically connected to the load testing member 300 to obtain the load applied by the driving member 200. The control device can acquire deformation information of the corresponding test pipeline under different loads and display the deformation information in a form or a line graph. The control device may also be electrically connected to the drive member 200. The control device is provided with a memory for storing different test loads, and controls the load applied by the driving component 200 according to the stored different test loads, so as to realize the automatic load loading of the test pipeline.
When the test pipeline needs to be loaded and deformed, the resistance strain gauge 400 is adhered to the target deformation position of the test pipeline, a plurality of resistance strain gauges 400 can be arranged in the circumferential direction and/or the axial direction of the test pipeline, and the resistance strain gauges 500 are connected with the plurality of resistance strain gauges 400 through cables. The resistance strain gauge 500 is connected to a computer. The ram of the jacking device is then lowered to the bottom dead center position, and the test tube is threaded between upper support 104 and sliding support 105 and placed on sliding support 105. The jacking device is operated to lift the traveling carriage 105 until the test pipe is clamped. The deformation load applied to the test pipe is adjusted according to the magnitude of the load measured by the load testing member 300. The computer may read and display the deformation signal of the resistive strain gauge 500.
Any numerical value recited herein includes all values from the lower value to the upper value, in increments of one unit, provided that there is a separation of at least two units between any lower value and any higher value. For example, if it is stated that the number of a component or a value of a process variable (e.g., temperature, pressure, time, etc.) is from 1 to 90, preferably from 20 to 80, and more preferably from 30 to 70, it is intended that equivalents such as 15 to 85, 22 to 68, 43 to 51, 30 to 32 are also expressly enumerated in this specification. For values less than 1, one unit is suitably considered to be 0.0001, 0.001, 0.01, 0.1. These are only examples of what is intended to be explicitly recited, and all possible combinations of numerical values between the lowest value and the highest value that are explicitly recited in the specification in a similar manner are to be considered.
Unless otherwise indicated, all ranges include the endpoints and all numbers between the endpoints. The use of "about" or "approximately" with a range applies to both endpoints of the range. Thus, "about 20 to about 30" is intended to cover "about 20 to about 30", including at least the endpoints specified.
All articles and references disclosed, including patent applications and publications, are hereby incorporated by reference for all purposes. The term "consisting essentially of …" describing a combination shall include the identified element, ingredient, component or step as well as other elements, ingredients, components or steps that do not materially affect the basic novel characteristics of the combination. The use of the terms "comprising" or "including" to describe combinations of elements, components, or steps herein also contemplates embodiments that consist essentially of such elements, components, or steps. By using the term "may" herein, it is intended to indicate that any of the described attributes that "may" include are optional.
A plurality of elements, components, parts or steps can be provided by a single integrated element, component, part or step. Alternatively, a single integrated element, component, part or step may be divided into separate plural elements, components, parts or steps. The disclosure of "a" or "an" to describe an element, ingredient, component or step is not intended to foreclose other elements, ingredients, components or steps.
It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided will be apparent to those of skill in the art upon reading the above description. The scope of the present teachings should, therefore, be determined not with reference to the above description, but should instead be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are hereby incorporated by reference for all purposes. The omission in the foregoing claims of any aspect of the subject matter that is disclosed herein is not intended to forego such subject matter, nor should the inventors be construed as having contemplated such subject matter as being part of the disclosed inventive subject matter.
Claims (10)
1. A testing system for testing loading deformation of a pipe, comprising:
a test piece clamp for applying a load to a test tube, comprising: the device comprises a supporting frame, an upper support fixed on the supporting frame and a sliding support positioned below the upper support; the sliding support is slidably mounted on the support frame; the upper end of the sliding support is provided with a lower bearing bent opening, and the lower end of the upper support is provided with an upper bearing bent opening facing the lower bearing bent opening; a test pipeline is arranged between the lower bearing elbow and the upper bearing elbow;
a drive member for driving the shoe to apply a load to the test conduit;
a load testing member for testing the load applied by the driving member;
and the deformation testing component is used for testing the deformation signal of the testing pipeline.
2. The test system for testing the loading deformation of the pipeline according to claim 1, wherein the inner surface of the lower bearing elbow is further provided with a lower rubber block; the inner surface of the upper bearing bent opening is also provided with an upper rubber block; the elastic modulus of the lower rubber block and the upper rubber block is 0.9-1.2 times of that of soil.
3. The testing system for testing the loading deformation of the pipeline according to claim 1, wherein the central angle corresponding to the lower bearing bend is 140 degrees to 160 degrees, and the diameter of the lower bearing bend is 1.2 times the diameter of the testing pipeline; the central angle corresponding to the upper bearing bent opening is 140-160 degrees.
4. The testing system for testing the loading deformation of the pipeline according to claim 2, wherein the length of the lower rubber block in the circumferential direction is greater than the length of the upper rubber block in the circumferential direction, and the lower rubber block and the upper rubber block are arranged in the center.
5. The test system for testing the loading deformation of the pipeline as claimed in claim 1, wherein the upper support and the sliding support are formed by welding circular arc steel plates and plane steel plates with equal thickness.
6. The testing system for testing the loading deformation of a pipeline according to claim 1, wherein said support frame comprises a frame base, two guide posts, and a fixed cross-beam; the two guide upright posts are fixed on the frame base in an opposite arrangement mode; the fixed cross beam is fixedly connected above the frame base; the upper support seat is positioned between the two guide upright posts and is fixedly connected with the fixed cross beam; the inner side wall of the guide upright post is provided with a sliding rail for the sliding support to slide; the driving component is supported between the sliding support and the frame base to jack the sliding support.
7. The testing system for testing the loading deflection of a pipe according to claim 6, wherein said support frame is formed by welding rectangular closed-end steel.
8. The testing system for testing the loading deformation of the pipeline according to claim 6, wherein the driving member comprises a jacking device having a working stroke of not less than 0.2 times the diameter of the pipeline under test.
9. The testing system for testing the loading deformation of a pipeline according to claim 8, wherein the load testing member includes a force sensor disposed between the jacking device and the frame base.
10. The testing system for testing the loading deformation of the pipeline according to claim 1, wherein the deformation testing member comprises a strain gauge attached to the outer wall of the testing pipeline and a resistance strain gauge electrically connected with the strain gauge; the resistance strain gauge is connected with a control device provided with a display part.
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| CN202022442033.5U CN213903107U (en) | 2020-10-28 | 2020-10-28 | Test system for testing loading deformation of pipeline |
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| CN202022442033.5U CN213903107U (en) | 2020-10-28 | 2020-10-28 | Test system for testing loading deformation of pipeline |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112198056A (en) * | 2020-10-28 | 2021-01-08 | 中石油西北联合管道有限责任公司 | Test system for testing loading deformation of pipeline |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112198056A (en) * | 2020-10-28 | 2021-01-08 | 中石油西北联合管道有限责任公司 | Test system for testing loading deformation of pipeline |
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Address after: 830000 No. 99, West fifth lane, Tianjin North Road, Urumqi high tech Industrial Development Zone (new urban area), Xinjiang Uygur Autonomous Region Patentee after: Pipe network group (Xinjiang) United Pipeline Co.,Ltd. Patentee after: China University of Petroleum (Beijing) Address before: PetroChina Urumqi building, No.99, Xiwu lane, Tianjin North Road, Xinshi District, Urumqi, Xinjiang 830002 Patentee before: PETROCHINA NORTHWEST UNITED PIPELINE CO.,LTD. Patentee before: China University of Petroleum (Beijing) |