A gas pipe manual flange expansion tool

Abstract

The utility model relates to gas pipeline maintenance and engineering construction technical field discloses a kind of gas pipeline manual flange expansion tool, including main body shell and flange sheet, the bottom of main body shell is equipped with fixed assembly, expansion assembly is installed in the inside of main body shell;The expansion assembly includes lead screw, the inside of main body shell is provided with thread groove, the lead screw is threadedly connected in the inside of thread groove, the fixed assembly includes fixed adjusting bolt, the fixed adjusting bolt is threadedly connected in the inside of main body shell.The utility model in, when replacing sealing gasket, first screw up fixed adjusting bolt to fixed groove one, two realize stable fixation.Grasp tightly or with wrench auxiliary rotation flange face bolt head, drive lead screw rotation gradually move down, make expansion alloy head sharp mouth insert flange sheet gap, with its in-depth flange sheet separation, can quickly complete replacement.

Description

Technical Field

[0001] This utility model relates to the field of gas pipeline maintenance and repair and engineering construction technology, and in particular to a manual flange expansion tool for gas pipelines. Background Technology

[0002] Town gas has outstanding advantages such as being clean and environmentally friendly, and is one of the important energy sources for developing the national economy and improving people's quality of life, accounting for an increasingly large proportion in today's society. Gas supply is mainly achieved through gas pipelines delivered to households. The flammable and explosive nature of gas makes the safe operation of gas pipelines a top priority concerning urban safety.

[0003] However, during routine gas pipeline maintenance and construction work, replacing or installing flange gaskets often presents challenges due to the small gap between the two flanges, making it difficult to insert the gasket and affecting construction progress and gas supply restoration time. To ensure the safe operation of gas pipelines, a manual flange expansion tool was developed to address these practical problems encountered in daily work. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a manual flange expansion tool for gas pipelines, which aims to improve the problem of insufficient gap between two flanges and difficulty in inserting flange gaskets in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A manual flange expansion tool for gas pipelines includes a main body shell and a flange plate, wherein a fixing component is installed at the bottom of the main body shell and an expansion component is installed inside the main body shell;

[0007] The expansion assembly includes a lead screw, and the inside of the main body housing has a threaded groove, with the lead screw threadedly connected inside the threaded groove.

[0008] As a further description of the above technical solution:

[0009] The fixing component includes a fixing adjustment bolt, which is threaded into the interior of the main body housing;

[0010] As a further description of the above technical solution:

[0011] The top of the lead screw is fixedly connected to a flange bolt head, which is round and has anti-slip texture on the surface.

[0012] As a further description of the above technical solution:

[0013] Both sides of the main body shell are provided with a fixing groove, and the two fixing adjustment bolts are threaded into the inside of the fixing groove.

[0014] As a further description of the above technical solution:

[0015] An expansion alloy head, which is tapered, is fixedly connected to the bottom of the lead screw.

[0016] As a further description of the above technical solution:

[0017] The two flanges have a second fixing groove inside, and the two fixing adjusting bolts are threaded into the second fixing groove;

[0018] As a further description of the above technical solution:

[0019] A sealing gasket is provided between the two flange plates;

[0020] As a further description of the above technical solution:

[0021] Gas pipes are fixedly connected to the outer sides of the two flanges, and the gas pipes are located on both sides of the sealing gasket.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the bolt head on the flange face is gripped (or a wrench is used for assistance) and rotated, causing the lead screw to rotate. Because the threads on the lead screw surface engage with the thread grooves, the lead screw will slowly move downwards. At this time, the tip of the expansion alloy head will insert into the gap between the two flange plates. As the expansion alloy head continues to penetrate deeper, the flange plates gradually separate, allowing for convenient replacement of the sealing gasket. The entire operation process is simple and efficient.

[0024] 2. In this utility model, when replacing the sealing gasket, simply tighten the fixing and adjusting bolts into the fixing groove one and fixing groove two, and achieve quick and stable fixing through the internal threads. Attached Figure Description

[0025] Figure 1 This is a plan view of a manual flange expansion tool for gas pipelines proposed in this utility model;

[0026] Figure 2 This is a cross-sectional schematic diagram of a manual flange expansion tool for gas pipelines proposed in this utility model.

[0027] Legend:

[0028] 1. Flange bolt head; 2. Lead screw; 3. Main body shell; 4. Fixing and adjusting bolt; 5. Expansion alloy head; 6. Flange plate; 7. Sealing gasket; 8. Threaded groove; 9. Fixing groove one; 10. Fixing groove two; 11. Gas pipeline. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Reference Figure 1 and Figure 2 The present invention provides an embodiment of a manual flange expansion tool for gas pipelines, comprising a main body shell 3 and a flange plate 6. The main body shell 3 is cast from a high-strength alloy material, which has good pressure resistance and wear resistance and can be used stably for a long time. A fixing component is installed at the bottom of the main body shell 3, and an expansion component is installed inside the main body shell 3.

[0031] The expansion assembly includes a lead screw 2, which is made of high-precision alloy steel and has undergone special thread processing to ensure precise fit with the threaded groove 8. The main body housing 3 has a threaded groove 8 inside, and the lead screw 2 is threaded into the inside of the threaded groove 8. When the lead screw 2 is rotated, it can achieve stable and precise up-and-down movement through the threaded transmission principle. A flange bolt head 1 is fixedly connected to the top of the lead screw 2. The flange bolt head 1 is round and has anti-slip texture on its surface. The round design of the flange bolt head 1 makes it easy for operators to grip and operate with their bare hands. Simultaneously, its surface is treated with anti-slip texture, which, through concave... The alternating raised texture effectively increases friction, preventing slippage even when the operator's hands are oily or in a damp environment, ensuring the stability and safety of the rotation operation. The bottom of the lead screw 2 is fixedly connected to the expansion alloy head 5, which is conical. The expansion alloy head 5 is made of a special high-strength, high-toughness alloy material and is forged to form a conical structure. This conical design allows it to enter the flange gap with less resistance, and as it goes deeper, its gradually expanding shape can evenly apply expansion force to both sides, ensuring that the flange separates smoothly and safely.

[0032] Reference Figure 1 and Figure 2The fixing component includes fixing adjusting bolts 4, which are threaded into the interior of the main body shell 3. The fixing adjusting bolts 4 are also made of high-strength alloy material, possessing strong tightening force and corrosion resistance. They are designed with easy-to-operate hexagonal heads, allowing operators to quickly tighten or loosen the bolts using a common hex wrench, thus enabling rapid tool installation and removal. Both sides of the main body shell 3 have fixing grooves 9, and two fixing adjusting bolts 4 are threaded into the interior of these grooves. The shape and size of the fixing grooves 9 match the threads of the fixing adjusting bolts 4, enabling... The fixing bolt 4 provides a stable installation base. By tightening the fixing bolt 4, the main body shell 3 can be initially fixed near the gas pipeline flange. The two flange plates 6 have fixing grooves 10 inside. The depth and diameter of the fixing grooves 10 can fit tightly with the fixing bolt 4. The two fixing bolts 4 are threaded into the fixing grooves 10. When the fixing bolts 4 are tightened to the fixing grooves 9 and 10, the main body shell 3 and the flange plates 6 can be firmly fixed together to form a stable working structure, effectively preventing the tool from shifting or shaking during the flange expansion process.

[0033] Reference Figure 1 and Figure 2 A sealing gasket 7 is installed between the two flanges 6. As a key component of the gas pipeline sealing system, the sealing gasket 7 is made of special rubber or composite material that is resistant to high temperature and gas corrosion. Its shape and size are precisely matched with the sealing groove of the flange 6, which can form a reliable sealing effect after the flange is tightened, preventing gas leakage and ensuring the safety of gas transmission. A gas pipeline 11 is fixedly connected to the outside of the two flanges 6. The gas pipeline 11 is located on both sides of the sealing gasket 7. The gas pipeline 11 is usually made of corrosion-resistant alloy pipe. It is tightly connected to the flanges 6 by bolts to form a complete gas transmission channel. When it is necessary to replace the sealing gasket 7, the flange expansion operation is performed using this tool, which can quickly and safely complete the replacement of the sealing gasket, ensuring the normal operation and safe use of the gas pipeline system.

[0034] Working principle: First, when it is necessary to replace the sealing gasket 7, simply tighten the fixing adjustment bolt 4 into the fixing groove 9 and fixing groove 10 to achieve quick fixation. The internal thread makes the fixation more stable.

[0035] Next, tighten the flange bolt head 1, or tighten it with a wrench, and rotate the flange bolt head 1 to rotate the lead screw 2. Because the surface of the lead screw 2 has threads that fit into the thread groove 8, the lead screw 2 can slowly move downwards. At this time, the tip of the expansion alloy head 5 is inserted into the gap between the two flange plates 6. As the expansion alloy head 5 goes deeper, the flange plates 6 gradually separate. At this time, the sealing gasket 7 can be replaced. The operation is simple, convenient and quick.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A manual flange expansion tool for gas pipelines, comprising a main body shell (3) and a flange plate (6), characterized in that: A fixing component is installed at the bottom of the main body shell (3), and an expansion component is installed inside the main body shell (3); The expansion assembly includes a lead screw (2), and the main body housing (3) has a threaded groove (8) inside, and the lead screw (2) is threadedly connected inside the threaded groove (8).

2. The manual flange expansion tool for gas pipelines according to claim 1, characterized in that: The fixing component includes a fixing adjustment bolt (4), which is threaded into the interior of the main body shell (3).

3. The manual flange expansion tool for gas pipelines according to claim 1, characterized in that: The top of the lead screw (2) is fixedly connected to a flange bolt head (1), which is round and has anti-slip texture on its surface.

4. A manual flange expansion tool for gas pipelines according to claim 2, characterized in that: The main body shell (3) has a fixing groove (9) on both sides, and the two fixing adjustment bolts (4) are threaded into the fixing groove (9).

5. A manual flange expansion tool for gas pipelines according to claim 1, characterized in that: The bottom of the lead screw (2) is fixedly connected to an expansion alloy head (5), which is conical.

6. A manual flange expansion tool for gas pipelines according to claim 4, characterized in that: The two flanges (6) have a fixing groove (10) inside, and the two fixing adjusting bolts (4) are threaded into the fixing groove (10).

7. A manual flange expansion tool for gas pipelines according to claim 6, characterized in that: A sealing gasket (7) is provided between the two flanges (6).

8. A manual flange expansion tool for gas pipelines according to claim 7, characterized in that: Gas pipes (11) are fixedly connected to the outer sides of the two flanges (6), and the gas pipes (11) are located on both sides of the sealing gasket (7).

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