Large-scale branch pipe group hydrostatic test supporting device

Abstract

The invention relates to the technical field of water conservancy and hydropower construction engineering, and particularly discloses a large-scale branch pipe group hydraulic pressure test supporting device which comprises a pier body, a bearing seat and an elastic traction assembly, the bearing seat is movably arranged on the pier body, and the elastic traction assembly is arranged on the bearing seat. The two bearing seats are oppositely and adjacently arranged to support a branch pipe joint, and the elastic traction assembly is connected with the two bearing seats; when a water pressure test is carried out, the branch pipe joint may generate certain radial deformation under the action of water pressure, the two bearing seats can overcome the traction force of the elastic traction assembly to move towards the two sides under the gravity action of the branch pipe joint, deformation of the branch pipe joint in the radial direction can be adapted, the friction and damage risks of the branch pipe joint are reduced, and the service life of the branch pipe joint is prolonged. Meanwhile, the bearing seat has a certain movement margin, constraint on a welding seam of the branch pipe joint can be reduced, stress distribution can be improved, stress release can be accelerated, and therefore the stability and safety of the branch pipe joint are improved.

Description

Technical Field

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

[0002] A water pressure test is a pressure test on a steel bifurcated pipe that is carried out by using a pressure test pump to continue to pressurize water inward after the tested equipment or piping system is filled with water, at a specified test pressure and holding time. The purpose of a water pressure test is mainly two-fold: one is to check the compressive strength and tightness of the components; the other is that the water pressure test during the manufacturing process also has the effect of changing the stress distribution of the steel bifurcated pipe and improving the stress condition at the defective parts.

[0003] In the related art, for example, a Chinese patent document with publication number CN217542610U discloses a support device for a water pressure test of a high-strength steel bifurcated pipe. However, since the support device adopts saddle steel support, the length of the entire pipe cannot be too long. Otherwise, the deformation of the supporting steel structure is difficult to control when subjected to large force, which leads to uneven force and is prone to safety accidents. Summary of the invention

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

[0005] In order to solve the above problems, the present invention adopts the following technical solutions: The present application provides a large-scale bifurcated pipe group hydraulic pressure test support device for large-scale bifurcated pipe group hydraulic pressure test, the support device comprises a pier body, a bearing seat and an elastic pulling assembly; wherein: The bearing seat is movably arranged on the pier body, and the two bearing seats are arranged oppositely and adjacent to each other to support the branch 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 to facilitate the testing and release of the mechanical stress of the branch pipe section.

[0006] Furthermore, the pier body has two symmetrically arranged first supporting surfaces, the two bearing seats are supported on the first supporting surfaces, and the first supporting surfaces are inclined surfaces.

[0007] Furthermore, the bearing seat can be movably arranged on the pier body along the axial direction of the bifurcated pipe section.

[0008] Furthermore, a first limiting portion is provided on the bearing seat, and the first limiting portion cooperates with the pier body in a limiting manner along the axial direction of the bifurcated pipe section.

[0009] Furthermore, 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 opposite to each other.

[0010] Furthermore, a second limiting portion is also provided on the pier body, and the bearing seat and the second limiting portion are limitedly matched along the radial direction of the branch pipe section.

[0011] Furthermore, a gap area is formed between the two bearing seats, part of the elastic pulling component is located in the gap area, and a pouring hole communicating with the gap area is provided on the pier body and / or the bearing seat.

[0012] Furthermore, the pier body forms a bending portion between the two first supporting surfaces, and the bending portion is located in the gap area.

[0013] Furthermore, the large bifurcated pipe group water pressure test support device also includes a temporary support structure, which includes a support plate, two of the support plates are distributed along the axial direction of the bifurcated pipe section, and the pier body is located between the two support plates.

[0014] Furthermore, the elastic pulling component is a pulling steel cable.

[0015] The technical solution adopted by the present invention can achieve the following beneficial effects: The large-scale bifurcated pipe group water pressure test support device of the present application has a large amount of water in the bifurcated pipe joint during the water pressure test. The bifurcated pipe joint may produce a certain radial deformation under the action of water pressure. The two bearing seats can overcome the pulling force of the elastic pulling assembly and move to both sides under the action of the gravity of the bifurcated pipe joint until a new balance point is reached, so as to adapt to the deformation of the bifurcated pipe joint in the radial direction and reduce the risk of friction and damage between the bifurcated pipe joint and the bearing seats. At the same time, the two bearing seats have a certain degree of activity margin in the relative directions, which can reduce the constraints on the welds of the bifurcated pipe joints and improve the stress distribution, which helps to accelerate the release of stress, thereby improving the stability and safety of the bifurcated pipe joints. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a schematic diagram of the application of a large bifurcated pipe group water pressure test support device according to an embodiment of the present application; Figure 2 yes Figure 1 A local enlarged schematic diagram of the middle A; Figure 3 This is one of the structural schematic diagrams of the large bifurcated pipe group water pressure test support device of the embodiment of the present application; Figure 4 This is the second structural schematic diagram of the large bifurcated pipe group water pressure test support device of the embodiment of the present application; Figure 5 It is a schematic diagram of the support of a large bifurcated pipe group water pressure test support device for a bifurcated pipe section according to an embodiment of the present application.

[0018] In the figure: 100, pier body; 110, first supporting surface; 120, second limiting portion; 130, bending portion; 200, bearing seat; 210, bearing unit; 211, first limiting portion; 212, second supporting surface; 220, gap area; 230, injection hole; 300, elastic pulling assembly; 400, support plate; 500, branch pipe section. DETAILED DESCRIPTION

[0019] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0020] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0021] The following is combined with Figures 1 to 5 , the large bifurcated pipe group water pressure test support device provided in the embodiment of the present application is described in detail through specific embodiments and application scenarios.

[0022] See also Figure 1 , Figure 2 and Figure 3The embodiment of the present application discloses a support device for a large-scale bifurcated pipe group water pressure test. The disclosed support device for a large-scale bifurcated pipe group water pressure test is used to provide effective support for large-scale bifurcated pipes and complete water pressure tests. Specifically, the support device includes a pier body 100, a bearing seat 200 and an elastic pulling assembly 300, wherein the pier body 100 is a basic component of the support device for a large-scale bifurcated pipe group water pressure test, and can provide an installation foundation for the bearing seat 200 and the elastic pulling assembly 300. Specifically, the pier body 100 has a first supporting surface 110. Exemplarily, the first supporting surface 110 can be a horizontal plane or an inclined plane, and the bearing seat 200 is supported on the first supporting surface 110 and can be slidably arranged on the first supporting surface 110.

[0023] In the embodiment of the present application, two bearing seats 200 are arranged opposite to and adjacent to each other, and each bearing seat 200 has an arc-shaped second supporting surface 212. The second supporting surfaces 212 of the two bearing seats 200 are connected to form a receiving groove, and the branch pipe section 500 is received in the receiving groove. That is to say, the second supporting surfaces 212 of the two bearing seats 200 jointly support the branch pipe section 500. It can be understood that when the branch pipe section 500 is supported on the two bearing seats 200, based on the arc-shaped design of the second supporting surface 212, the bearing seats 200 are subjected to both downward pressure and thrust to both sides, so that the two bearing seats 200 tend to move away from each other.

[0024] In the embodiment of the present application, the elastic pulling component 300 connects the two bearing seats 200. For example, the elastic pulling component 300 can pull the 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 action of the elastic pulling component 300, in the initial state, the two bearing seats 200 are close to each other and are in a relatively determined position. When conducting a water pressure test, there is a large amount of water in the fork pipe section 500. The fork pipe section 500 may produce a certain radial deformation under the action of water pressure. At the same time, the pressure applied by the fork pipe section 500 to the bearing seat 200 is significantly increased. The two bearing seats 200 can overcome the elastic pulling component under the gravity of the fork pipe section 500. The pulling force of the component 300 moves to both sides until it reaches a new balance point, so as to adapt to the deformation of the fork pipe section 500 in the radial direction and reduce the risk of friction and damage between the fork pipe section 500 and the bearing seat 200. At the same time, the two bearing seats 200 have a certain degree of activity margin in the relative directions, which can reduce the constraints on the welds of the fork pipe section 500 and improve the stress distribution, which helps to accelerate the release of stress, thereby improving the stability and safety of the fork pipe section 500. That is to say, when conducting a water pressure test, the two bearing seats 200 move within the elastic deformation range of the elastic pulling component 300 to facilitate the testing and release of mechanical stress at the welding point of the fork pipe section 500.

[0025] 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, the two bearing seats 200 are jointly supported on a plane, so that when the pier body 100 is cast and formed, it has the characteristic of convenient forming.

[0026] In some embodiments of this application, see Figure 4 and Figure 5 , the number of the first support surfaces 110 can be two, and the first support surfaces 110 can be inclined surfaces 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. In such a setting, based on the inclined design of the first support surfaces 110, the inclined support provides a certain inclination angle. When conducting a water pressure test, the two bearing seats 200 can move more smoothly along the inclined direction under the pressure of the bifurcated pipe section 500, and can more stably provide a certain degree of freedom for the bifurcated pipe section 500, so that it can deform more freely and release stress under the action of water pressure.

[0027] During the research process, the inventor discovered that the pier body 100 may produce certain errors during the molding process due to construction errors, material deformation, etc., and based on the inclined surface 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 surface design, these errors can be compensated to a certain extent, so that the bearing seat 200 can be more accurately installed at a predetermined height.

[0028] During the research process, the inventors also found that when conducting a water pressure test, the branch pipe section 500 has a certain deformation in the axial direction, and this deformation will cause the bearing seat 200 to undergo axial displacement relative to the pier body 100. Based on this situation, in an embodiment of the present application, the bearing seat 200 is movably arranged on the pier body 100 along the axial direction of the branch pipe section 500. Compared with the design 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 branch pipe section 500 can avoid excessive friction and wear with the pier body 100, thereby extending the service life of the branch pipe and the bearing seat.

[0029] In the examples of this 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.

[0030] 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 .

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] In the examples of this application, please continue to refer to Figure 4 and Figure 5 , two bearing seats 200 are arranged at intervals on the pier body 100, a gap area 220 is formed between the two bearing seats 200, part of the elastic pulling assembly 300 is located in the gap area 220, and a pouring hole 230 connected to the gap area 220 is provided on the pier body 100 and / or the bearing seat 200. Under such a setting, after the water pressure test is completed, slurry can be poured into the gap area 220 through the pouring hole 230, and the slurry forms a tie body after solidification, which can simultaneously play a role in tie-bonding and solidifying the two bearing seats 200 and the elastic pulling assembly 300, so that the two bearing seats 200 and the elastic pulling assembly 300 form a stable support body, thereby ensuring stable support for large bifurcated pipe groups during use.

[0036] As can be seen from the above, the two first supporting surfaces 110 are inclined downward from the middle of the pier body 100 to both sides thereof. In this way, a bending portion 130 is formed between the two first supporting surfaces 110 of the pier body 100, and the bending portion 130 is located in the gap area 220. In this way, the bonding body formed after the slurry solidifies can be covered on both sides of the bending portion 130. The bending portion 130 can play a certain limiting role on the bonding body, so that it cannot move to either side, which can significantly improve the stability of the entire support body.

[0037] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the 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 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 also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0038] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should 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 bearing seat (200) is movably arranged on the pier body (100), and the two bearing seats (200) are arranged opposite to and adjacent to each other to support the bifurcated pipe section (500). The elastic pulling component (300) connects the two bearing seats (200), and the two bearing seats (200) move within the elastic deformation range of the elastic pulling component (300) to facilitate the testing and release of the mechanical stress of the bifurcated pipe section (500).

2. The large bifurcated pipe group hydraulic test support device according to claim 1 is characterized in that: The pier body (100) has two symmetrically arranged first support surfaces (110), the two bearing seats (200) are supported on the first support surfaces (110), and the first support surfaces (110) are inclined surfaces.

3. The large bifurcated pipe group hydraulic test support device according to claim 2 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).

4. The large bifurcated pipe group hydraulic test support device according to claim 3 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).

5. The large bifurcated pipe group hydraulic test support device according to claim 4 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.

6. The large bifurcated pipe group hydraulic test support device according to any one of claims 1 to 5, 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).

7. The large bifurcated pipe group hydraulic test support device according to any one of claims 2 to 5, characterized in that: A gap area (220) is formed between the two bearing seats (200), a portion of the elastic pulling assembly (300) is located in the gap area (220), and a pouring hole (230) connected to the gap area (220) is provided on the pier body (100) and / or the bearing seat (200).

8. The large bifurcated pipe group hydraulic test support device according to claim 7, characterized in that: The pier body (100) forms a bending portion (130) between the two first supporting surfaces (110), and the bending portion (130) is located in the gap area (220).

9. 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).

10. 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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