Protective device for natural gas buried pipe excavation patching

Abstract

The utility model discloses a natural gas buried pipe excavation patching protection device which comprises a rectangular supporting unit, a protection plate is vertically installed on at least one side face of the supporting unit, and the side face is a face where earthwork is prone to collapse after excavation. The protective plate is located on the outer side face of the supporting unit, and a clamping groove used for clamping the protective plate is formed in the supporting unit. The supporting unit at least comprises a layer of supporting frame, the supporting frame is composed of four supporting rods, and the adjacent supporting rods are connected in a buckling mode. The protective device for natural gas buried pipe excavation patching is used for protecting the wall face, prone to collapsing (or loosening), of a pit, assembling is conducted in a clamping and buckling mode, and rapid assembling and disassembling can be achieved; the supporting frame and the protection plate are used in cooperation, the protection plate forms a physical isolation layer, direct contact between workers and dangerous soil is reduced, and the workers can maintain the buried pipe conveniently.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas buried pipe repair construction, specifically is a kind of natural gas buried pipe excavation repair protection device. BACKGROUND

[0002] As the key infrastructure of underground natural gas transmission, the safe and stable operation of natural gas buried pipe is crucial to energy supply. When the buried pipe is damaged due to external factors (such as soil corrosion, construction damage, etc.), timely repair is needed to avoid leakage risks. Existing repair techniques usually require operators to dig a pit of appropriate size to expose the damaged area, but there are significant limitations in special geological conditions. For example, in loose geological areas such as sandy soil and collapsible loess, although the meandering pit (annular trench) digging method is used to enhance the stability of the pit wall, the insufficient cohesion of the soil still leads to the collapse of the pit wall. Even if it does not pose a direct threat to personnel safety, repeated collapse still requires frequent cleaning, which seriously disrupts the continuity of repair operations and reduces repair efficiency. SUMMARY

[0003] Therefore, to solve the above problems, the utility model provides a kind of natural gas buried pipe excavation repair protection device, which is used to protect the collapsible (or loose) wall of the pit. The device is assembled through clamping and buckling, allowing for quick assembly and disassembly. The support frame and the guard plate are used together, with the guard plate forming a physical isolation layer to reduce direct contact between personnel and hazardous soil.

[0004] A natural gas buried pipe excavation repair protection device includes a rectangular support unit, and a guard plate is vertically installed on at least one side of the support unit. The side is the face of the soil that is prone to collapse after excavation.

[0005] The guard plate is located on the outer side of the support unit, and a clamping groove is provided on the support unit for clamping the guard plate.

[0006] The support unit includes at least one support frame, which is composed of four support rods. Adjacent support rods are connected by buckling.

[0007] Optionally, the four support rods include two parallel tongue-and-groove support rods and two parallel mortise-and-tenon support rods.

[0008] The tongue-and-groove support rods and the mortise-and-tenon support rods are connected by mortise-and-tenon buckling and are arranged vertically.

[0009] Optionally, the tongue-and-groove support rod has a tongue block at both ends, and a clamping groove is provided on the outer side of the support rod.

[0010] Optionally, the mortise-and-tenon support rod has a mortise at both ends that is adapted to the tongue block, and a clamping groove is provided on the outer side of the support rod.

[0011] Optionally, the clamping groove is formed by L-shaped blocks arranged at both ends of the tenon groove support rod or the tenon support rod.

[0012] Optionally, the tenon support rod and the tenon groove support rod each comprise a front support rod and a rear support rod, and the front support rod and the rear support rod are connected through dovetail grooves and dovetail tenons.

[0013] Optionally, at least one auxiliary block is arranged between the front support rod and the rear support rod, and the auxiliary block is connected with the front support rod and the rear support rod through the dovetail grooves and the dovetail tenons, so that the length of the support rod can be increased through the auxiliary block to adapt to different widths of the pit dug for repairing the buried natural gas pipeline.

[0014] The utility model has the advantages of the following:

[0015] The utility model discloses a kind of protection devices for natural gas buried pipeline excavation repair, for the wall of pit prone to collapse (or loose) is protected, is assembled by clamping and buckling, can realize quick loading and unloading;One or two support frames are used to support the guard plate, improve the protection ability;The support frame can keep middle as vacant area, middle does not have additional support rod, does not affect staff repair buried pipeline.The guard plate is supported by support frame simultaneously and also uses clamping groove to be firm, improve the stability of guard plate, guard plate forms physical isolation layer, reduces direct contact between personnel and dangerous soil.

[0016] Meanwhile, support rod adopts sectional design (front / rear front support rod+auxiliary block), and is extended or shortened quickly by dovetail tenon, single person can adjust on site, shortens assembly preparation time, adapts to pit of multiple sizes.

[0017] And the utility model uses mortise and tenon structure, and there is no loss after disassembly, which is convenient for repeated use, reduces long-term operation and maintenance cost;Meanwhile, support system exists independently from pit wall, to avoid the secondary damage of pit wall that can be caused by traditional wooden pile support. DETAILED DESCRIPTION

[0018] Figure 1 It is the structural schematic diagram of the support frame of the utility model;

[0019] Figure 2 It is the structural schematic diagram of the protection device of the utility model;

[0020] Figure 3 It is the structural schematic diagram of the tenon support rod of the utility model;

[0021] Figure 4 It is the structural schematic diagram of the tenon groove support rod of the utility model;

[0022] Figure 5Is the mortise support rod and tenon support rod connection state schematic diagram (auxiliary block is installed) of the utility model;

[0023] Figure 6 Is the rear support rod schematic diagram of the tenon support rod of the utility model;

[0024] Figure 7 Is the front support rod schematic diagram of the tenon support rod of the utility model;

[0025] Figure 8 Is the rear support rod and rear support rod connection schematic diagram of the tenon support rod of the utility model;

[0026] Figure 9 Is the tenon support rod partial schematic diagram of the utility model;

[0027] Figure 10 Is the tenon support rod partial schematic diagram of the utility model, and one auxiliary block is installed;

[0028] Figure 11 Is the tenon support rod partial schematic diagram of the utility model, and three auxiliary blocks are installed;

[0029] Figure 12 Is the structure schematic diagram of the auxiliary block of the utility model;

[0030] In the figure: 100, tenon support rod;101, tenon block;200, mortise support rod;201, clamping groove;202, clamping groove;203, mortise;204, extension wall surface;300, auxiliary block;301, dovetail mortise;302, dovetail tenon;400, guard plate. DETAILED DESCRIPTION

[0031] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0032] In this document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0033] As described in the background, buried natural gas pipelines are the key infrastructure for underground natural gas transportation, and their safe and stable operation is crucial for energy supply. When the buried pipeline is damaged due to external factors such as soil corrosion, construction damage, etc., timely repair is needed to avoid the risk of leakage. Existing repair techniques usually require operators to dig a pit of appropriate size to expose the damaged part, but there are significant limitations in special geological conditions. For example, in loose geological areas such as sandy soil, collapsible loess, etc., although the meandering pit (annular trench) digging method is used to try to enhance the stability of the pit wall, the insufficient cohesion of the soil still leads to the collapse of the pit wall. Even if it does not pose a direct threat to personnel safety, repeated collapse still requires frequent cleaning, which seriously disrupts the continuity of repair operations and reduces repair efficiency.

[0034] Based on the above reasons, the present embodiment provides a protection device for excavating and repairing a buried natural gas pipeline, as shown in Figure 2 and Figure 3 , which includes a rectangular support unit, a guard plate 400 is vertically installed on each of the four sides of the support unit, which are the sides prone to collapse after excavation;

[0035] The guard plate is located on the outer side of the support unit, and a clamping groove 202 is provided on the support unit for clamping the guard plate;

[0036] The support unit includes at least one support frame, which is composed of four support rods, and adjacent support rods are connected by a snap-fit method. The four support rods include two parallel tongue support rods 100 and two parallel mortise support rods 200;

[0037] The tongue support rod and the mortise support rod are connected by a mortise and tenon snap-fit connection and are arranged vertically (as shown in Figure 1 and Figure 5 ).

[0038] As an example, as shown in Figure 3 , two ends of the tongue support rod 100 are provided with tongue blocks 101, and a clamping groove 202 is provided on the outer side of the support rod; as shown in Figure 4 , two ends of the mortise support rod 200 are provided with mortise grooves 203 adapted to the tongue blocks, the mortise grooves have a certain distance from the side wall of the mortise support rod, thereby forming an extension wall surface 204, and a clamping groove 201 is provided on the outer side of the support rod. The clamping groove 201 is composed of an L-shaped block 201 provided at both ends of the mortise support rod or the tongue support rod. In order to reduce the disconnection of the mortise support rod and the tongue support rod after connection, the mortise groove is not a through hole, and the bottom is closed.

[0039] In order to change the length of the tenon support rod or the mortise support rod, the tenon support rod and the mortise support rod each include a front support rod and a rear support rod, and the front support rod and the rear support rod are connected through dovetail grooves and dovetail tenons, as shown in Figure 6 and Figure 7 The front support rod of the mortise support rod is provided with a dovetail tenon groove 301, and the rear support rod is provided with a dovetail tenon 302, and the mortise support rod 200 is connected, as shown in Figure 8 At least one auxiliary block 300 is arranged between the front support rod and the rear support rod (as shown in Figure 10 one auxiliary block 300 is arranged; as shown in Figure 11 three auxiliary blocks are arranged), and the auxiliary block is connected with the front support rod and the rear support rod through the dovetail groove and the dovetail tenon, and an example is shown in Figure 12 One end of the auxiliary block 300 is provided with a dovetail tenon 302, and the other end is provided with a dovetail tenon groove 301, and the length of the support rod can be adjusted through the auxiliary block to adapt to different widths of the pit, which is dug for repairing the buried natural gas pipeline. In order to reduce the risk of falling off of the front support rod and the rear support rod or the auxiliary block and the support rod when connected, the dovetail tenon groove is not a through hole, and the bottom is closed.

[0040] The protection device for repairing the buried natural gas pipeline is used, and according to the expected size of the pit where the buried natural gas pipeline to be repaired is located, a proper number and length of tenon support rods 100 and mortise support rods 200 are selected. If the width of the pit is large, the length of the support rod needs to be adjusted.

[0041] For the tenon support rod and the mortise support rod, if the length needs to be increased, the front support rod and the rear support rod are connected through the dovetail groove and the dovetail tenon. Specifically, the dovetail tenon groove 301 provided on the front support rod of the mortise support rod is connected with the dovetail tenon 302 provided on the rear support rod; at the same time, the auxiliary block 300 is arranged at the required position, and the dovetail tenon 302 at one end of the auxiliary block is connected with the dovetail tenon groove 301 of the front support rod or the rear support rod, and the dovetail tenon groove 301 at the other end is connected with the dovetail tenon 302 of the other part, and the length is adjusted to a proper length by increasing or decreasing the number of auxiliary blocks.

[0042] Then, the two parallel arranged tenon support rods 100 and the two parallel arranged mortise support rods 200 are connected through the tenon and mortise buckling. The tenon blocks 101 at both ends of the tenon support rod 100 are inserted into the mortise 203 (after the tenon block 101 is inserted into the mortise 203, the end face of the tenon support block is in contact with the outer end extension wall 204 of the mortise, so that the phenomenon of rotation of the tenon support rod after being installed on the mortise support rod can be prevented), at this time, the tenon support rod and the mortise support rod are vertically arranged, and a support frame composed of four support rods is formed. If the protection device needs multiple layers of support frames, repeat the above steps to build a multi-layer support frame structure.

[0043] The assembled support frame (i.e. support unit) is placed in the natural gas buried pipe excavation area, the position of the support frame is adapted to the excavation area, and it is ensured that the support frame can support the subsequently possible collapsed earth side.

[0044] The guard plate 400 is installed on the four sides of the support unit (i.e. the side of the earth which is easy to collapse after excavation). The guard plate is located on the outer side of the support unit, the guard plate is correspondingly clamped into the clamping groove 202 provided on the support unit, the installation of the guard plate is completed, and thus the installation of the protection device is completed. The protection device can be used for natural gas buried pipe excavation repair work, and can prevent the collapse of the earth from affecting the work.

[0045] The above description of disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for protecting against damage to a trench for burying a natural gas pipeline, characterized by: The support unit comprises a rectangle, and a guard plate is vertically installed on one side of the support unit; The guard plate is located on the outer side of the support unit, and the support unit is provided with a clamping groove for clamping the guard plate; The support unit comprises at least one support frame which is formed by four support rods, and adjacent support rods are connected by a clamping method.

2. The apparatus of claim 1, wherein: The four support rods comprise two protruding tenon support rods and two mortise support rods which are arranged in parallel; The protruding tenon support rod and the mortise support rod are connected by a tenon-and-mortise clamping connection and are arranged vertically.

3. The apparatus of claim 2, wherein: Two ends of the protruding tenon support rod are provided with protruding tenon blocks, and a clamping groove is arranged on the outer side of the support rod.

4. The apparatus of claim 3, wherein: Two ends of the mortise support rod are provided with mortise blocks which are matched with the protruding tenon blocks, and a clamping groove is arranged on the outer side of the support rod.

5. The apparatus of claim 3, wherein: The clamping groove is formed by an L-shaped block arranged at two ends of the mortise support rod or the protruding tenon support rod.

6. The apparatus of claim 2, wherein: The protruding tenon support rod and the mortise support rod each comprise a front support rod and a rear support rod, and the front support rod and the rear support rod are connected by a dovetail groove and a dovetail tenon.

7. A device for protecting a buried natural gas pipeline from damage caused by excavation according to claim 6, wherein: At least one auxiliary block is arranged between the front support rod and the rear support rod, and the auxiliary block is connected to the front support rod and the rear support rod by a dovetail groove and a dovetail tenon.

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