Deep buried pipe stress experiment device
By designing a deep-buried pipe stress testing device with a frame structure, filling material, and load application mechanism, the problem of the complexity and high cost of existing equipment is solved, and a simple and economical stress testing evaluation of deep-buried pipes is realized.
Patent Information
- Application Number
- CN202520217753.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-11
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2035-02-11
AI Technical Summary
Existing equipment for testing the stress of deeply buried pipes is complex in structure and expensive, making it difficult to conduct simple stress tests on deeply buried pipes.
A stress test device for deeply buried pipes is provided, including a frame structure, filler, pressure pusher and load application mechanism. By placing the test pipe in the test frame and filling it with filler, the load application mechanism applies pressure to the pressure pusher to simulate the stress conditions under deep burial environment.
It enables simple and efficient stress testing of deeply buried pipes, which can conveniently evaluate the strength and deformation of the test pipes and reduce equipment costs.
Smart Images
Figure CN223611265U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of deep test, specifically, relate to a deep pipe stress experiment device. BACKGROUND
[0002] Deep pipe fittings are usually used in underground pipeline systems, especially in buried pipeline or tunnel installed pipeline components. These pipe fittings are usually used to connect, support, protect and adjust the direction or position of the pipeline, to ensure the safe and stable operation of the pipeline system in the underground environment.
[0003] Deep pipe stress experiment is a kind of experiment to study and analyze the stress behavior of deep buried pipeline (such as underground pipeline, tunnel or underground oil and gas pipeline) in geological environment. The purpose of this experiment is to simulate the stress and deformation of the pipeline under the environmental conditions of stratum, soil, rock, etc., so as to evaluate its safety and structural strength.
[0004] The common deep pipe stress experiment needs soil simulation box, pipeline model, sensor and measuring equipment and loading system, the equipment structure is complex and the cost is higher. UTILITY MODEL CONTENT
[0005] The utility model aims at providing a kind of deep pipe stress experiment device, which only needs to put the pipe fitting to be detected into the experimental frame, and the deep burying experiment can be carried out by the equivalent pressure applied by the pressure push head, which is very convenient.
[0006] In order to achieve the above purpose, the utility model provides a kind of deep pipe stress experiment device, the deep pipe stress experiment device includes frame structure, filler, pressure push head and load applying mechanism, the pressure push head slides along the length direction of the frame structure and forms experimental frame with the frame structure, experimental pipe fitting is placed in the test frame, the filler is filled between the experimental pipe fitting and the test frame, the load applying mechanism is fixedly connected with the pressure push head for providing pressure to the pressure push head.
[0007] Preferably, the frame structure includes bottom plate at the bottom, end plate opposite to the pressure push head and side plate at both sides;
[0008] The bottom plate is provided with discharge port away from the pressure push head, and the filler can be discharged from the discharge port.
[0009] Preferably, the frame structure further includes cover plate matched with the discharge port, and the cover plate is used for sealing the discharge port.
[0010] Preferably, one side of the pressure push head facing the test frame is fixedly connected with a protection plate for protecting the gap between the pressure push head and the side plate.
[0011] Preferably, the protective plate is arranged in an L shape, and the L-shaped protective plate is attached to the surface of the side plate.
[0012] Preferably, the L-shaped protective plate is arranged with a shorter side connected to the pressure push head and a longer side.
[0013] Preferably, the longer side of the L-shaped protective plate is attached to the side plate of the frame structure.
[0014] Preferably, the end of the longer side of the L-shaped protective plate is arranged along the height direction of the side plate.
[0015] According to the above technical solution, the experimental pipe is placed in the test frame, and then the filler is filled in the test frame until the filler is filled to the required height, and then the load applying mechanism applies pressure to the pressure push head.
[0016] The load applying mechanism pushes the pressure push head to move forward and extrudes the filler in the test frame during the process of applying pressure to the pressure push head. When the load is applied in place, the pressure push head remains stationary, and after a period of time, a certain landfill pressure is formed in the test frame, which acts on the experimental pipe through the filler. After the experiment continues for the required time, the experimental pipe is taken out, and the deformation amount is calculated by measuring the deformation size of the experimental pipe. The deformation amount is compared with the national standard requirement, and according to the comparison result, it is judged whether the strength of the experimental pipe meets the requirement.
[0017] According to the reference standard stress experiment requirement, the stress, landfill and other physical parameters in the deep burial scene are quantitatively calculated, and according to the depth of the deep burial, the pressure of the experimental pipe subjected to the landfill is calculated, and the required pushing force of the pressure push head in the deep burial pipe stress experiment device is calculated according to the pressure. The pushing force is the pressure that the load applying mechanism needs to apply to the pressure push head.
[0018] Other features and advantages of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS
[0019] The drawings are used to provide a further understanding of the present application, and constitute a part of the specification, and are used together with the following specific embodiments to explain the present application, but do not constitute a limitation on the present application. In the drawings:
[0020] Figure 1 is a structural schematic view of a deep burial pipe stress experiment device.
[0021] EXPLANATION OF REFERENCE NUMERALS
[0022] 12 side plate 2 filler
[0023] 3 pressure push head 4 load applying mechanism
[0024] 10 experimental pipe 11 end plate
[0025] 5 L-shaped protective plate DETAILED DESCRIPTION
[0026] The specific embodiments of the utility model are described in detail below in combination with the drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the utility model, and are not used to limit the utility model.
[0027] In the utility model, the orientation words contained in the terms such as 'inner, between, bottom, opposite, two sides and face' only represent the orientation of the term in the normal use state or the common name understood by the person skilled in the art without being regarded as the limitation of the term unless the opposite is stated.
[0028] Referring to Figure 1 The deep-buried pipe stress experiment device comprises a frame structure, a filler 2 and a pressure push head 3 and a load applying mechanism 4, the pressure push head 3 slides along the length direction of the frame structure and is enclosed with the frame structure to form an experimental frame, an experimental pipe 10 is placed in the experimental frame, the filler 2 is filled between the experimental pipe 10 and the experimental frame, and the load applying mechanism 4 is fixedly connected with the pressure push head 3 and is used for providing pressure to the pressure push head 3.
[0029] Through the implementation of the above technical scheme, the experimental pipe 10 is placed in the experimental frame, then the filler 2 is filled in the experimental frame until the filler 2 is filled to the required height, and then the load applying mechanism 4 is used to apply pressure to the pressure push head 3.
[0030] The load applying mechanism 4 pushes the pressure push head 3 to move forward and extrudes the filler 2 in the experimental frame during the process of applying pressure to the pressure push head 3, the pressure push head 3 remains stationary after the load is applied in place, and a certain landfill pressure is formed in the experimental frame after a period of time, the landfill pressure acts on the experimental pipe 10 through the filler 2. After the experiment continues to the required time, the experimental pipe 10 is taken out, the deformation amount is calculated by measuring the deformation size of the experimental pipe 10, the deformation amount is compared with the national standard requirement, and whether the strength of the experimental pipe 10 meets the requirement is judged according to the comparison result.
[0031] According to the reference standard stress experiment requirements, the stress and filling physical parameters in the deep burying scene are quantitatively calculated, and according to the depth of the deep burying, the pressure of the filling on the experimental pipe 10 is calculated, and the required pushing force of the pressure pushing head 3 in the deep burying pipe stress experiment device is calculated by back calculation according to the pressure. The pushing force is the pressure required by the load applying mechanism 4 to apply to the pressure pushing head 3.
[0032] In this embodiment, preferably, the frame structure includes a bottom plate at the bottom, an end plate 11 opposite to the pressure pushing head 3, and side plates 12 at both sides;
[0033] The bottom plate is provided with a discharge port away from the position of the pressure pushing head 3, and the filler 2 can be discharged from the discharge port.
[0034] The bottom plate is used to support the experimental pipe 10 and the filler 2 above. The required filler 2 for different experimental pipes 10 may not be the same, and the amount of filler 2 required by different experimental pipes 10 also varies according to the experimental requirements, so the filler 2 needs to be refilled every time, and the filler 2 in the experimental frame needs to be cleaned after the experiment.
[0035] The discharge port provided on the bottom plate can conveniently clean the filler 2 in the experimental frame.
[0036] In one embodiment, the discharge port is arranged near the end plate 11. When the experiment is finished, the experimental pipe 10 is removed first, a container for containing the filler 2 is placed below the discharge port, and then the filler 2 is pushed to the position of the discharge port, so that the filler 2 falls into the container below from the discharge port.
[0037] In another embodiment, the discharge port is arranged near the middle of the bottom plate. When placing the experimental pipe 10, the experimental pipe 10 can be placed outside the discharge port, and the filler 2 is isolated from the discharge port by the experimental pipe 10, so that the filler 2 does not fall from the discharge port during the experiment. When the experiment is finished, the experimental pipe 10 is removed, a container for containing the filler 2 is placed below the discharge port, and then the filler 2 is pushed to the position of the discharge port, so that the filler 2 falls into the container below from the discharge port.
[0038] In this embodiment, preferably, the frame structure further includes a cover plate used in cooperation with the discharge port, and the cover plate is used to seal the discharge port.
[0039] When the discharge port cannot be isolated from the filler 2 by the experimental pipe 10, a cover plate needs to be arranged to cover the discharge port, and when the filler 2 is placed, the filler 2 will not fall from the discharge port.
[0040] Preferably, the cover plate is connected to the bottom plate by a hinge, and the opening and closing of the discharge port can be realized by turning the cover plate.
[0041] In this embodiment, preferably, one side of the pressure push head 3 facing the test frame is fixedly connected with a protection plate for protecting the gap between the pressure push head 3 and the side plate 12.
[0042] When the load applying mechanism 4 applies a load to the pressure push head 3, the pressure push head 3 will slide with the side plate 12, and the protection plate can protect the gap between the pressure push head 3 and the side plate 12, so as to avoid the filler 2 entering the gap and affecting the reliable movement of the pressure push head 3.
[0043] When the pressure push head 3 slides with the side plate 12, in order to ensure the straightness of the movement of the pressure push head 3, a guide rail can be arranged on the side edge to limit the movement of the pressure push head 3.
[0044] In one embodiment, the side plate 12 is provided with a guide rail which protrudes from the surface of the side edge or is recessed in the surface of the side plate 12, and the pressure push head 3 is provided with a sliding block in cooperation with the side plate 12, and the movement of the pressure push head 3 can be guided by the cooperation of the sliding block and the guide rail. When this embodiment is adopted, the filler 2 may enter the guide rail and is not easy to be removed, especially when the guide rail is recessed in the surface of the side plate 12, which will affect the reliability of the cooperation of the sliding block and the guide rail over a long period of time.
[0045] In another embodiment, the upper end and the lower end of the side plate 12 are respectively provided with a limiting plate, and the two limiting plates constitute a guide rail, and the pressure push head 3 is a sliding block which slides in the guide rail, and when the load applying mechanism 4 applies a load to the pressure push head 3, the pressure push head 3 can only slide between the two limiting plates. At this time, the protection plate protects the gap between the pressure push head 3 and the side plate 12.
[0046] Preferably, the direction of the pushing force of the load applying mechanism 4 is set so that the pressure push head 3 can only move in the horizontal direction, and only a limiting plate is arranged at the bottom of the side plate 12 to support the pressure push head 3, so as to ensure the straightness of the movement of the pressure push head 3.
[0047] In this embodiment, preferably, the protection plate is L-shaped, and the L-shaped protection plate 5 is fitted with the surface of the side plate 12.
[0048] The L-shaped protection plate 5 is fitted with the surface of the side plate 12, so that when the filler 2 is filled into the test frame, the L-shaped protection plate 5 can isolate the gap between the side plate 12 and the pressure push head 3 from the filler 2, and avoid the filler 2 entering the gap.
[0049] In this embodiment, preferably, one side of the L-shaped protection plate 5 connected with the pressure push head 3 is set to be shorter, and the other side of the L-shaped protection plate 5 is set to be longer.
[0050] According to actual experience, the displacement amount of the pressure push head 3 when the load applying mechanism 4 applies load to the pressure push head 3 can be obtained. The length of the long side of the L-shaped guard plate 5 is set to be greater than the displacement amount, so that the positions where the pressure push head 3 contacts the side plate 12 can be protected under the protection of the long side of the L-shaped guard plate 5, thereby avoiding the situation that the filler 2 affects the movement of the pressure push head 3.
[0051] In this embodiment, preferably, the long side of the L-shaped guard plate 5 is in contact with the side plate 12 of the frame structure.
[0052] By setting the long side of the L-shaped guard plate 5 to be in contact with the side plate 12 of the frame structure, the filler 2 is prevented from entering between the L-shaped guard plate 5 and the side plate 12, thereby avoiding the interference of the filler 2 with the movement of the pressure push head 3, so that the load applying mechanism 4 can push the pressure push head 3 to the desired position, and the experimental frame can keep the set pre-embedded pressure acting on the experimental pipe 10.
[0053] In this embodiment, preferably, the end of the long side of the L-shaped guard plate 5 is arranged along the height direction of the side plate 12.
[0054] The end of the long side of the L-shaped guard plate 5 is arranged along the height direction of the side plate 12 so as to shield the gap between the side plate 12 and the pressure push head 3 along the height direction, thereby achieving reliable protection of the gap.
[0055] The preferred embodiments of the present application are described in detail above in combination with the drawings, but the present application is not limited to the specific details in the above-described embodiments, and various simple modifications can be made to the technical solutions of the present application within the technical concept of the present application, and these simple modifications all belong to the protection scope of the present application.
[0056] In addition, it should be noted that the various specific technical features described in the above-described specific embodiments can be combined in any appropriate manner without contradiction, and in order to avoid unnecessary repetition, the present application will not further describe various possible combination manners.
[0057] In addition, various different embodiments of the present application can also be combined in any manner, as long as they do not deviate from the technical concept of the present application, and they should also be considered as disclosed contents of the present application.
Claims
1. A deep-buried pipe stress experiment device, characterized in that, The deep-buried pipe stress experiment device comprises a frame structure, a filler (2), a pressure push head (3) and a load applying mechanism (4), the pressure push head (3) slides along the length direction of the frame structure and forms an experiment frame together with the frame structure, an experiment pipe (10) is placed in the experiment frame, the filler (2) is filled between the experiment pipe (10) and the experiment frame, and the load applying mechanism (4) is fixedly connected with the pressure push head (3) and used for providing pressure to the pressure push head (3).
2. The deep-buried pipe stress experiment device according to claim 1, characterized in that, The frame structure comprises a bottom plate located at the bottom, an end plate (11) oppositely arranged with the pressure push head (3) and side plates (12) located at both sides. The bottom plate is provided with a discharge port at a position away from the pressure push head (3), and the filler (2) can be discharged from the discharge port.
3. The deep-buried pipe stress experiment device according to claim 2, characterized in that, The frame structure further comprises a cover plate used in cooperation with the discharge port, and the cover plate is used for sealing the discharge port.
4. The deep-buried pipe stress experiment device according to claim 1, characterized in that, One side of the pressure push head (3) facing the experiment frame is fixedly connected with a protection plate for protecting the gap between the pressure push head (3) and the side plate (12).
5. The deep-buried pipe stress experiment device according to claim 4, characterized in that, The protection plate is provided in an L shape, and the L-shaped protection plate (5) is attached to the surface of the side plate (12).
6. The deep-buried pipe stress experiment device according to claim 5, characterized in that, One side of the L-shaped protection plate (5) connected with the pressure push head (3) is provided to be shorter, and the other side of the L-shaped protection plate (5) is provided to be longer.
7. The deep-buried pipe stress experiment device according to claim 6, characterized in that, The longer side of the L-shaped protection plate (5) is attached to the side plate (12) of the frame structure.
8. The deep-buried pipe stress experiment device according to claim 7, characterized in that, The end of the longer side of the L-shaped protection plate (5) is provided along the height direction of the side plate (12).