A hydraulic test support device for a large group of bifurcation pipes

Abstract

The present invention relates to the technical field of water conservancy and hydropower construction engineering, and specifically discloses a hydraulic test support device for a large bifurcated pipe group. The hydraulic test support device for a large bifurcated pipe group includes a pier body, a bearing seat, and an elastic tension component. The bearing seat is movably arranged on the pier body, and the two bearing seats are arranged opposite to and adjacent to each other to support the bifurcated pipe section. The elastic tension component connects the two bearing seats. During the hydraulic test, the bifurcated pipe section may produce a certain radial deformation under the action of water pressure. The two bearing seats can move to both sides under the gravity of the bifurcated pipe section, overcoming the pulling force of the elastic tension component, and can adapt to the deformation of the bifurcated pipe section in the radial direction, reducing the risk of friction and damage of the bifurcated pipe section. At the same time, the bearing seat has a certain margin of movement, which can reduce the constraint on the weld of the bifurcated pipe section and improve the stress distribution, which helps to accelerate the release of stress, thereby improving the stability and safety of the bifurcated pipe section.

Description

Technical Field

[0001] The present invention relates to the technical field of water conservancy and hydropower construction engineering, and particularly relates to a water pressure test support device for a large-scale bifurcated pipe group. Background Art

[0002] A water pressure test refers to a pressure test on a steel bifurcated pipe by filling the test equipment or pipeline system with water and then continuously pressing water into it with a pressure test pump at a specified test pressure and holding time. The main purposes of the water pressure test are twofold: one is to check the pressure resistance strength and tightness of components; the other is that for the water pressure test during the manufacturing process, it also has the effect of changing the stress distribution of the steel bifurcated pipe and improving the stress condition at the defect location.

[0003] In related technologies, for example, the Chinese patent document with the publication number CN217542610U discloses a support device for the water pressure test of a high-strength steel bifurcated pipe. However, since this support device uses saddle-shaped steel supports, it is required that the length of the entire pipe cannot be too long, otherwise, the deformation of the steel structure that plays a supporting role is not easy to control when the force is large, which may lead to uneven stress and is prone to safety accidents. Summary of the Invention

[0004] The present invention discloses a water pressure test support device for a large-scale bifurcated pipe group to solve the above-mentioned technical problems existing in related technologies.

[0005] To solve the above problems, the present invention adopts the following technical solutions:

[0006] The present application provides a water pressure test support device for a large-scale pipe bifurcated group, which is used for the water pressure test of a large-scale pipe bifurcated group. The support device includes a pier body, a bearing seat, and an elastic pulling component; wherein:

[0007] The bearing seat is movably arranged on the pier body, and the two bearing seats are arranged opposite to and adjacent to each other to support the bifurcated pipe section. The elastic pulling component connects the two bearing seats, and the two bearing seats move within the elastic deformation range of the elastic pulling component so as to test and release the mechanical stress of the bifurcated pipe section.

[0008] Further, the pier body has two symmetrically arranged first support surfaces, and the two bearing seats are supported on the first support surfaces, and the first support surfaces are inclined surfaces.

[0009] Further, the bearing seat is movably arranged on the pier body along the axial direction of the bifurcated pipe section.

[0010] Further, a first limiting portion is arranged on the bearing seat, and the first limiting portion is in limiting cooperation with the pier body along the axial direction of the bifurcated pipe section.

[0011] Further, the bearing seat includes two independent bearing units, the two bearing units are distributed along the axial direction of the bifurcated pipe section, and the first limiting portions on the two bearing units are arranged oppositely.

[0012] Further, a second limiting portion is further arranged on the pier body, and the bearing seat and the second limiting portion are in limiting cooperation along the radial direction of the bifurcated pipe section.

[0013] Further, a gap area is formed between the two bearing seats, a part of the elastic tensioning assembly is located in the gap area, and a perfusion hole communicating with the gap area is arranged on the pier body and / or the bearing seat.

[0014] Further, a bent portion is formed on the pier body between the two first supporting surfaces, and the bent portion is located in the gap area.

[0015] Further, the large bifurcated pipe group hydrostatic test support device further includes a temporary support structure, the temporary support structure includes a support plate, the two support plates are distributed along the axial direction of the bifurcated pipe section, and the pier body is located between the two support plates.

[0016] Further, the elastic tensioning assembly is a tensioning steel cable.

[0017] The technical solution adopted by the present invention can achieve the following beneficial effects:

[0018] For the large bifurcated pipe group hydrostatic test support device of the present application, during the hydrostatic test, there is a large amount of water in the bifurcated pipe section. Under the action of water pressure, the bifurcated pipe section may produce a certain radial deformation. Under the gravity of the bifurcated pipe section, the two bearing seats can overcome the pulling force of the elastic tensioning assembly and move to both sides until a new balance point is reached, so as to adapt to the deformation of the bifurcated pipe section in the radial direction, reduce the risk of friction and damage between the bifurcated pipe section and the bearing seat. At the same time, the two bearing seats have a certain margin of movement in the opposite directions, which can reduce the constraint on the weld of the bifurcated pipe section and improve the stress distribution, which helps to accelerate the release of stress, thereby improving the stability and safety of the bifurcated pipe section. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to these drawings.

[0020] Figure 1 It is an application schematic diagram of the large bifurcated pipe group hydrostatic test support device of the embodiment of the present application;

[0021] Figure 2 is Figure 1 The partial enlarged schematic view at position A in

[0022] Figure 3 is one of the structural schematic diagrams of the large bifurcated pipe group hydrostatic test support device according to the embodiment of the present application;

[0023] Figure 4 is the second structural schematic diagram of the large bifurcated pipe group hydrostatic test support device according to the embodiment of the present application;

[0024] Figure 5 is the support schematic diagram of the large bifurcated pipe group hydrostatic test support device for the bifurcated pipe section according to the embodiment of the present application.

[0025] In the figure:

[0026] 100, pier body; 110, first support surface; 120, second limiting part; 130, bending part; 200, bearing seat; 210, bearing unit; 211, first limiting part; 212, second support surface; 220, gap area; 230, perfusion hole; 300, elastic pulling component; 400, support plate; 500, bifurcated pipe section. Detailed implementation manners

[0027] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other implementation manners obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0028] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such used data may be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are usually of the same category, and do not limit the number of objects. For example, the first object may be one or multiple. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / ", generally represents an "or" relationship between the associated objects before and after.

[0029] The following will be combined with the attached Figures 1 to 5 to illustrate in detail the large bifurcated pipe group hydrostatic test support device provided by the embodiments of the present application through specific embodiments and their application scenarios.

[0030] Please refer to Figure 1, Figure 2 and Figure 3 , embodiments of the present application disclose a hydraulic test support device for a large bifurcated pipe group. The disclosed hydraulic test support device for a large bifurcated pipe group is applied to provide effective support for a large bifurcated pipe and complete a hydraulic test. Specifically, the support device includes a pier body 100, a bearing seat 200, and an elastic tensioning assembly 300. Among them, the pier body 100 is a basic component of the hydraulic test support device for a large bifurcated pipe group and can provide an installation foundation for the bearing seat 200 and the elastic tensioning assembly 300. Specifically, the pier body 100 has a first support surface 110. Exemplarily, the first support surface 110 can be a horizontal surface or an inclined surface. The bearing seat 200 is supported on the first support surface 110 and is slidably arranged on the first support surface 110.

[0031] In the embodiments of the present application, two bearing seats 200 are arranged relatively and adjacent to each other. Each bearing seat 200 has an arc-shaped second support surface 212. The second support surfaces 212 of the two bearing seats 200 are joined to form a receiving groove, and the bifurcated pipe section 500 is received in the receiving groove. That is to say, the second support surfaces 212 of the two bearing seats 200 jointly support the bifurcated pipe section 500. It can be understood that when the bifurcated pipe section 500 is supported on the two bearing seats 200, based on the arc-shaped design of the second support surface 212, the bearing seat 200 is subjected to both a downward pressure and a lateral thrust, causing the two bearing seats 200 to tend to move away from each other.

[0032] In the embodiments of the present application, the elastic tensioning assembly 300 connects the two bearing seats 200. Exemplarily, the elastic tensioning assembly 300 can be a pulling steel cable, and the two ends of the pulling steel cable are respectively connected and fixed to the bearing seats 200. Based on the pulling effect of the elastic tensioning assembly 300, in the initial state, the two bearing seats 200 are close to each other and in relatively determined positions. During the hydraulic test, there is a large amount of water in the bifurcated pipe section 500. The bifurcated pipe section 500 may undergo a certain radial deformation under the action of water pressure. At the same time, the pressure exerted by the bifurcated pipe section 500 on the bearing seats 200 increases significantly. The two bearing seats 200 can overcome the pulling force of the elastic tensioning assembly 300 and move to both sides under the gravity of the bifurcated pipe section 500 until a new balance point is reached, so as to adapt to the deformation of the bifurcated pipe section 500 in the radial direction and reduce the risk of friction and damage between the bifurcated pipe section 500 and the bearing seats 200. At the same time, the two bearing seats 200 have a certain margin of movement in the relative direction, which can reduce the constraint on the weld of the bifurcated pipe section 500 and improve the stress distribution, which helps to accelerate the release of stress, thereby improving the stability and safety of the bifurcated pipe section 500. That is to say, during the hydraulic test, the two bearing seats 200 move within the elastic deformation range of the elastic tensioning assembly 300 to facilitate the testing and release of mechanical stress at the welded joints of the bifurcated pipe section 500.

[0033] In some embodiments of the present application, the first support surface 110 may be a plane, and the first support surface 110 may be parallel to the horizontal plane. That is to say, the two bearing seats 200 are jointly supported on a plane. In this way, when the pier body 100 is cast and formed, it has the characteristic of convenient forming.

[0034] In some embodiments of the present application, please refer to Figure 4 and Figure 5 , the number of the first support surfaces 110 may be two, and the first support surfaces 110 may be inclined planes inclined relative to the horizontal plane. Specifically, the two first support surfaces 110 are symmetrically arranged on both sides of the pier body 100, and the first support surfaces 110 are inclined downward from the middle of the pier body 100 to both sides thereof. With such a setting, based on the inclined design of the first support surface 110, the inclined plane support provides a certain inclination angle. During the hydrostatic test, when the two bearing seats 200 are under the pressure of the bifurcation pipe section 500, they can move more smoothly along the inclined plane direction, and can more stably provide a certain degree of freedom for the bifurcation pipe section 500, so that it can deform and release stress more freely under the action of water pressure.

[0035] The inventor found during the research process that the pier body 100 may have certain errors during the forming process due to construction errors, material deformation, etc. Based on the inclined plane design of the first support surface 110, the relative position of the bearing seat 200 on the pier body 100 can be adjusted by sliding the bearing seat 200, thereby adjusting the height of the two bearing seats 200 on the pier body 100, that is, adjusting the installation height of the bearing seat 200 on the pier body 100. Through the adjustment effect of the inclined plane design, these errors can be compensated to a certain extent, so that the bearing seat 200 can be installed more accurately at the predetermined height.

[0036] The inventor also found during the research process that during the hydrostatic test, the bifurcation pipe section 500 has a certain deformation in the axial direction, and this deformation will drive the bearing seat 200 to have an axial displacement relative to the pier body 100. Based on this situation, in the embodiments of the present application, the bearing seat 200 is movably arranged on the pier body 100 along the axial direction of the bifurcation pipe section 500. Compared with the design method in which the bearing seat 200 is constrained at a specific position in the axial direction, the movement of the bearing seat 200 in the axial direction of the bifurcation pipe section 500 can avoid excessive friction and wear with the pier body 100, thereby extending the service life of the bifurcation pipe and the bearing seat.

[0037] In the embodiments of the present application, please continue to refer to Figure 4 and Figure 5A first limiting portion 211 is provided on the bearing seat 200. Exemplarily, the bearing seat 200 and the first limiting portion 211 can be cast as one piece. The first limiting portion 211 and the pier body 100 are limited in the axial direction of the branch pipe section 500. Under such a setting, in the initial state, there is a gap between the first limiting portion 211 and the pier body 100. When the bearing seat 200 moves a certain distance in the axial direction driven by the branch pipe section, the first limiting portion 211 can contact with the corresponding part on the pier body 100, thereby limiting the further movement of the bearing seat 200. This limiting cooperation can ensure that the bearing seat 200 moves within the allowed range and will not separate from the pier body 100 due to excessive movement, thereby ensuring the stability of the entire supporting device.

[0038] In some embodiments of the present application, the bearing seat 200 may be an integrated structure. After the pier body 100 is cast and shaped, the bearing seat 200 may be cast on the pier body 100 .

[0039] In some embodiments of this application, see Figure 3 , Figure 4 and Figure 5 The bearing seat 200 can also be a split structure. The bearing seat 200 can include two independent bearing units 210. When the two bearing units 210 are arranged on the pier body 100, the two bearing units 210 are along the axial direction of the branch pipe section 500, and the first limiting parts 211 on the two bearing units 210 are arranged relatively. In this way, the two first limiting parts 211 can play a limiting role in the two axial directions respectively. On the one hand, designing the bearing seat 200 as two independent bearing units 210 can enhance the support stability of the entire bearing seat 200. The two bearing units 210 can cooperate with each other when subjected to force and jointly bear external axial or radial loads, thereby improving the bearing capacity of the entire bearing seat 200. On the other hand, based on the split design of the bearing seat 200, the two bearing units 210 can also be cast and formed in an external environment, and installed on the pier body 100 in sequence from both sides of the axial direction of the pier body 100. Compared with the method of casting the bearing seat 200 on the pier body 100, this method can greatly reduce the difficulty of production, manufacturing and installation of the bearing seat 200, and is more suitable for complex construction environments.

[0040] The large-scale bifurcated pipe group hydraulic test support device of the embodiment of the present application may also include a temporary support structure, which may be a support plate 400, which may be a steel plate, which may be connected to the bifurcated pipe section 500 by welding and support the bifurcated pipe section 500. Specifically, two support plates 400 are distributed along the axial direction of the bifurcated pipe section 500, and the pier body 100 is located between the two support plates 400, thereby maintaining the stability of the temporary support structure supporting the bifurcated pipe section 500.

[0041] In the examples of this application, see Figure 1 , Figure 2 and Figure 3 , a large bifurcated pipe group is formed by connecting a plurality of bifurcated pipe sections 500. The supporting device of the embodiment of the present application can be multiple and jointly support the entire bifurcated pipe group. When arranging the large bifurcated pipe group, the supporting plate 400 can be welded and fixed to the bifurcated pipe section 500 and play a temporary supporting role. Specifically, after the welding of the supporting plate 400 and the bifurcated pipe section 500 is completed, the supporting plates 400 made of multiple steel materials play a temporary supporting role for the entire large bifurcated pipe group, so as to facilitate the positioning and installation of the plurality of bifurcated pipe sections 500, and then The pier body 100 is cast between the support plates 400. After the pier body 100 is cast, two bearing units 210 can be installed from the axial ends of the pier body 100 to form a bearing seat 200. It should be noted that if the operating space formed between the pier body 100 and the support plate 400 is relatively narrow and does not have the conditions for installing the bearing unit 210, the support plate 400 on one side can be cut off to free up more installation space so that the bearing unit 210 can be installed on the pier body 100 in the axial direction. It can be understood that after the bearing unit 210 is installed, the second supporting surface 212 at this time does not contact the bifurcated pipe section 500 to play a supporting role. At this time, the elastic pulling component 300 can be tightened to make the bearing unit 210 slide upward on the first supporting surface 110, thereby playing a supporting role for the bifurcated pipe section 500. After the load-bearing unit 210 on one side is installed, the support plate 400 on the other side is cut off so that the other side can also accommodate the load-bearing unit 210. Similarly, after the load-bearing unit 210 on the other side is supported on the first support surface 110, the elastic pulling assembly 300 is used to adjust the other load-bearing unit 210 to support the branch pipe section 500.

[0042] As can be seen from the above, when the hydraulic pressure test is carried out, the pressure of the bifurcated pipe section 500 on the bearing seat 200 is significantly increased, so that the two bearing seats 200 move to opposite sides. In a further technical solution, the pier body 100 is also provided with a second limiting portion 120, which is distributed on both sides of the bifurcated pipe section 500. Similarly, the second limiting portion 120 can be cast and formed integrally with the pier body 100, and the bearing seat 200 and the second limiting portion 120 are limited in the radial direction of the bifurcated pipe section 500. After the bearing seat 200 is pressed and moves to both sides for a certain distance, the bearing seat 200 can contact the second limiting portion 120, thereby limiting the further movement of the bearing seat 200. This limiting cooperation can ensure that the bearing seat 200 can have a certain activity margin in the radial direction, and the bearing seat 200 will not be separated from the pier body 100 due to excessive movement, thereby ensuring the stability and safety of the entire support device.

[0043] In the examples of this application, please continue to refer toFigure 4 and Figure 5 The two bearing seats 200 are arranged at intervals on the pier body 100, and a gap area 220 is formed between the two bearing seats 200. A part of the elastic tension component 300 is located in the gap area 220, and a perfusion hole 230 communicating with the gap area 220 is arranged on the pier body 100 and / or the bearing seat 200. With such an arrangement, after the hydrostatic test is completed, slurry can be perfused into the gap area 220 through the perfusion hole 230. After the slurry solidifies, a tie body is formed, which can play a role in tying and solidifying both the two bearing seats 200 and the elastic tension component 300, so that the two bearing seats 200 and the elastic tension component 300 form a stable support body, thereby ensuring a stable support for the large-scale bifurcation pipe group during use.

[0044] As can be seen from the foregoing, the two first support surfaces 110 slope downward from the middle of the pier body 100 to both sides thereof. In this case, a bent portion 130 is formed on the pier body 100 between the two first support surfaces 110, and the bent portion 130 is located in the gap area 220. In this case, the tie body formed after the slurry solidifies can cover both sides of the bent portion 130, and the bent portion 130 can play a certain limiting role on the tie body, preventing it from moving to either the left or the right side arbitrarily, and can significantly improve the stability of the entire support body.

[0045] It should be noted that in this article, the terms "including", "comprising" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in a reverse order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0046] The above is only the specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered by the protection scope of the present invention.

Claims

1. A large-scale bifurcated pipe group hydraulic pressure test support device, used for large-scale bifurcated pipe group hydraulic pressure test, characterized in that: It comprises a pier body (100), a bearing seat (200) and an elastic pulling assembly (300); wherein: The pier body (100) has two symmetrically arranged first support surfaces (110), the first support surfaces (110) are inclined surfaces, the pier body (100) forms a bending portion (130) between the two first support surfaces (110), the two bearing seats (200) are movably supported on the first support surfaces (110), and the two bearing seats (200) are arranged oppositely and adjacently to support the bifurcated pipe section (500); The elastic pulling assembly (300) is connected to the two bearing seats (200), and the two bearing seats (200) move within the elastic deformation range of the elastic pulling assembly (300) to test and release the mechanical stress of the branch pipe section (500). A gap area (220) is formed between the two bearing seats (200), and part of the elastic pulling assembly (300) is located in the gap area (220). The pier body (100) and / or the bearing seat (200) are provided with a perfusion hole (230) connected to the gap area (220).

2. The large bifurcated pipe group hydraulic test support device according to claim 1 is characterized in that: The bearing seat (200) can be movably arranged on the pier body (100) along the axial direction of the bifurcated pipe section (500).

3. The large bifurcated pipe group hydraulic test support device according to claim 2 is characterized in that: The bearing seat (200) is provided with a first limiting portion (211), and the first limiting portion (211) cooperates with the pier body (100) in a limiting manner along the axial direction of the bifurcated pipe section (500).

4. The large bifurcated pipe group hydraulic test support device according to claim 3 is characterized in that: The bearing seat (200) comprises two mutually independent bearing units (210), the two bearing units (210) are distributed along the axial direction of the bifurcated pipe section (500), and the first limiting portions (211) on the two bearing units (210) are arranged opposite to each other.

5. The large bifurcated pipe group hydraulic test support device according to any one of claims 1 to 4, characterized in that: A second limiting portion (120) is also provided on the pier body (100), and the bearing seat (200) cooperates with the second limiting portion (120) in a limiting manner along the radial direction of the bifurcated pipe section (500).

6. The large bifurcated pipe group hydraulic test support device according to claim 1, characterized in that: It also comprises a temporary support structure, the temporary support structure comprising a support plate (400), two support plates (400) are distributed along the axial direction of the bifurcated pipe section (500), and the pier body (100) is located between the two support plates (400).

7. The large bifurcated pipe group hydraulic test support device according to claim 1, characterized in that: The elastic pulling component (300) is a pulling steel cable.

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