Insulated stainless steel pipe for high pressure steam lines

Abstract

This utility model relates to the field of high-pressure steam pipelines and discloses a heat-insulating stainless steel pipe for high-pressure steam pipelines. It includes two stainless steel pipes connected by threads on adjacent sides. A fixing block is slidably connected to the outer wall of the left stainless steel pipe, and a connecting block is fixedly connected to the outer wall of the right stainless steel pipe. Two connecting inserts are fixedly connected to the left side of the connecting block, and two connecting grooves are formed on the right side of the fixing block. The outer walls of the two connecting inserts are inserted into the inner walls of the connecting grooves. Two limiting blocks are rotatably connected to the inner walls of the connecting grooves, and adjacent sides of the two limiting blocks are inserted into the front and rear sides of the connecting inserts. In this utility model, rotating the face gear drives the rotating rod to rotate the limiting blocks, thereby clamping the connecting inserts with the two limiting blocks, reinforcing the connection between the two stainless steel pipes, and simplifying the operation process.

Description

Technical Field

[0001] This utility model relates to the field of high-pressure steam pipelines, and in particular to a heat-insulating stainless steel pipe for high-pressure steam pipelines. Background Technology

[0002] In the industrial sector, insulated stainless steel pipes are an important piping material for high-pressure steam pipelines. They typically employ a multi-layered design. The inner layer is made of stainless steel, possessing excellent high-temperature resistance, maintaining stable mechanical strength and corrosion resistance even at high temperatures, effectively resisting the erosion of chemicals in steam and extending service life. The middle layer is an insulation layer, generally made of materials such as polyurethane, fiberglass wool board, or aerogel felt. These materials have extremely low thermal conductivity, effectively preventing heat loss, reducing energy consumption, and ensuring stable steam temperature. The outer layer is a protective sheath, such as PVC or HDPE, which protects the pipeline from mechanical damage and rainwater erosion. Insulated stainless steel pipes are widely used in industries such as thermal power plants, chemicals, food processing, and pharmaceuticals. For example, in thermal power plants, they can efficiently and stably transport high-temperature steam to distant locations; in industries with high steam quality requirements, such as chemicals and food processing, they ensure that steam transportation is not contaminated, guaranteeing production continuity and product quality.

[0003] Existing pipe connection methods have many inconveniences. Taking welding as an example, it requires skilled workers and specialized equipment. High-temperature welding can also easily alter the metallographic structure and other material properties of the pipe, reducing the corrosion resistance of the weld. When maintenance is needed, cutting the weld joint can easily damage surrounding pipes, making the process cumbersome and potentially affecting system stability. Furthermore, these connection methods often have poor sealing performance, making leaks prone to occur after use. To address these technical problems, this application proposes a heat-insulated stainless steel pipe for high-pressure steam pipelines. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and propose a heat-insulating stainless steel pipe for high-pressure steam pipelines. By turning the face gear to rotate the rotating rod, the limiting block is rotated, thereby clamping the connecting plug between the two limiting blocks and strengthening the connection between the two stainless steel pipes. The operation process is simplified and the convenience of pipeline installation and maintenance is greatly improved.

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

[0006] An insulated stainless steel pipe for high-pressure steam pipelines includes two stainless steel pipes connected by threads on adjacent sides. A fixing block is slidably connected to the outer wall of the left stainless steel pipe, and a connecting block is fixedly connected to the outer wall of the right stainless steel pipe. Two connecting inserts are fixedly connected to the left side of the connecting block, and two connecting grooves are formed on the right side of the fixing block. The outer walls of the two connecting inserts are inserted into the inner walls of the connecting grooves. Two limiting blocks are rotatably connected to the inner walls of the connecting grooves. The adjacent sides of the two limiting blocks are inserted into the front and rear sides of the connecting inserts. The left sides of the two limiting blocks are connected by a limiting assembly to adjust the rotation of the limiting blocks. The inner walls of the two stainless steel pipes are connected by a sealing assembly to increase the sealing between the two stainless steel pipes.

[0007] Furthermore, the limiting component includes a rotating rod fixedly connected to the left end of the limiting block, two face gears rotatably connected to the inner wall of the connecting groove, and two toothed columns rotatably connected to the inner wall of the fixed block.

[0008] Furthermore, the right end of the face gear is fixedly connected to the left end of the rotating rod, and the outer wall of the face gear meshes with the outer wall of the gear column.

[0009] Furthermore, the front side of the fixing block is threaded with two screws, and the front end of the toothed post is fixedly connected to the rear end of the screws.

[0010] Furthermore, multiple connecting rods are fixedly connected to the left side of the connecting block, and the outer wall of the connecting rods is inserted into the right side of the fixed block.

[0011] Furthermore, the sealing assembly includes a second sealing ring fixedly connected to the inner wall of the left stainless steel pipe, a first sealing ring fixedly connected to the inner wall of the right stainless steel pipe, a plurality of first sealing strips fixedly connected to the inner wall of the first sealing ring, and a plurality of second sealing strips fixedly connected to the outer wall of the second sealing ring.

[0012] Furthermore, the right side of the second sealing ring is inserted into the left side of the first sealing ring, the left side of the first sealing ring is inserted into the right side of the second sealing ring, the outer wall of the first sealing strip is inserted into the outer wall of the second sealing ring, and the outer wall of the second sealing strip is inserted into the inner wall of the first sealing ring.

[0013] This utility model has the following beneficial effects:

[0014] 1. In this utility model, the rotating rod is driven by the rotating face gear to rotate the limiting block, thereby clamping the connecting plug between the two limiting blocks and strengthening the connection between the two stainless steel pipes; the operation process is simplified and the convenience of pipe installation and maintenance is greatly improved.

[0015] 2. In this utility model, the interlocking structure of the first and second sealing rings, along with the embedding of the first and second sealing strips into their respective sealing rings, fills the minute gaps between the sealing rings, forming multiple layers of sealing protection. Compared to the poor sealing performance of traditional connection methods, this design significantly enhances the sealing performance at the connection between the two stainless steel pipes, preventing leakage of high-pressure steam during transportation. Attached Figure Description

[0016] Figure 1 This is a perspective view of a heat-insulating stainless steel pipe for high-pressure steam pipelines proposed in this utility model.

[0017] Figure 2 This is a schematic diagram of a connecting plug for a heat-insulated stainless steel pipe used in a high-pressure steam pipeline, as proposed in this utility model.

[0018] Figure 3 This is a schematic diagram of the face gear of a heat-insulating stainless steel pipe for high-pressure steam pipelines proposed in this utility model.

[0019] Figure 4 This is a schematic diagram of the first sealing ring of a heat-insulating stainless steel pipe for high-pressure steam pipelines proposed in this utility model.

[0020] Figure 5 This is a schematic diagram of a second sealing strip for a heat-insulating stainless steel pipe used in high-pressure steam pipelines, as proposed in this utility model.

[0021] Legend:

[0022] 1. Stainless steel pipe; 2. Connecting block; 3. Fixing block; 4. Screw; 5. Connecting plug; 6. Connecting rod; 7. Limiting block; 8. Rotating rod; 9. Face gear; 10. Gear column; 11. First sealing ring; 12. Second sealing ring; 13. First sealing strip; 14. Second sealing strip. Detailed Implementation

[0023] 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.

[0024] Reference Figures 1-3This utility model provides an embodiment of a heat-insulating stainless steel pipe for high-pressure steam pipelines, comprising two stainless steel pipes 1, which are threaded together on adjacent sides. A fixing block 3 is slidably connected to the outer wall of the left stainless steel pipe 1, and a connecting block 2 is fixedly connected to the outer wall of the right stainless steel pipe 1. Two connecting inserts 5 are fixedly connected to the left side of the connecting block 2. Two connecting grooves are formed on the right side of the fixing block 3. The outer walls of the two connecting inserts 5 are inserted into the inner walls of the connecting grooves to connect the two stainless steel pipes 1. The sliding fixing block 3 aligns the connecting grooves with the connecting inserts 5, so that the connecting inserts 5 are inserted into the connecting grooves. Two limiting blocks 7 are rotatably connected to the inner wall of the connecting grooves. The adjacent sides of the two limiting blocks 7 are inserted into the front and rear sides of the connecting inserts 5, and the two limiting blocks 7 clamp the connecting inserts 5 to reinforce the connection of the two stainless steel pipes 1. The left end of the limiting block 7 is fixedly connected to... A rotating rod 8 is connected to two face gears 9 rotatably connected to the inner wall of the connecting groove. The initial positions of the two limiting blocks 7 are different, and the number of teeth of the front face gear 9 is half that of the rear face gear 9, so that the two limiting blocks 7 are finally in the same position after the screw 4 is screwed in. Two toothed pillars 10 are rotatably connected to the inner wall of the fixing block 3. The right end of the face gear 9 is fixedly connected to the left end of the rotating rod 8. The rotation of the face gear 9 drives the rotating rod 8 to rotate the limiting block 7. The outer wall of the face gear 9 meshes with the outer wall of the toothed pillar 10. The rotation of the toothed pillar 10 meshes with the face gear 9, thereby rotating the face gear 9. Two screws 4 are threadedly connected to the front side of the fixing block 3. The front end of the toothed pillar 10 is fixedly connected to the rear end of the screw 4. Tightening the screw 4 causes the screw 4 to drive the toothed pillar 10 to rotate. Multiple connecting rods 6 are fixedly connected to the left side of the connecting block 2. The outer wall of the connecting rod 6 is inserted into the right side of the fixing block 3 to increase the connectivity.

[0025] Reference Figure 1 , Figure 4 and Figure 5 A second sealing ring 12 is fixedly connected to the inner wall of the stainless steel pipe 1 on the left, and a first sealing ring 11 is fixedly connected to the inner wall of the stainless steel pipe 1 on the right. Multiple first sealing strips 13 are fixedly connected to the inner wall of the first sealing ring 11, and multiple second sealing strips 14 are fixedly connected to the outer wall of the second sealing ring 12. The right side of the second sealing ring 12 is inserted into the left side of the first sealing ring 11, and the left side of the first sealing ring 11 is inserted into the right side of the second sealing ring 12. The first sealing ring 11 is inserted into the second sealing ring 12, and the second sealing ring 12 is inserted into the first sealing ring 11, forming a preliminary seal between the first and second sealing rings 11. The outer wall of the first sealing strip 13 is inserted into the outer wall of the second sealing ring 12, and the outer wall of the second sealing strip 14 is inserted into the inner wall of the first sealing ring 11. The first sealing strip 13 is inserted into the second sealing ring 12, and the second sealing strip 14 is inserted into the first sealing ring 11. The insertion of the sealing strips fills the tiny gaps between the sealing rings, thereby increasing the sealing performance of the pipe connection.

[0026] Working principle: At the beginning of installation, connect the two stainless steel pipes 1, slide the fixing block 3 to align the connecting groove with the connecting plug 5, so that the connecting plug 5 is inserted into the connecting groove, turn the screw 4 to make the screw 4 drive the toothed column 10 to rotate and slide, the toothed column 10 rotates and slides and meshes with the face gear 9, so that the face gear 9 rotates, the face gear 9 rotates and drives the rotating rod 8 to rotate the limiting block 7, so that the two limiting blocks 7 clamp the connecting plug 5 and strengthen the connection of the two stainless steel pipes 1.

[0027] When two stainless steel pipes 1 are connected, the first sealing ring 11 and the second sealing ring 12 are interlocked, that is, the first sealing ring 11 is embedded in the corresponding groove of the second sealing ring 12, and at the same time, the second sealing ring 12 is also inserted into the corresponding space of the first sealing ring 11. Through this nesting method, the two are tightly interlocked, forming a preliminary seal and effectively preventing fluid from leaking out from the pipe connection. To further enhance the sealing effect, the first sealing strip 13 is inserted into the second sealing ring 12, and the second sealing strip 14 is inserted into the first sealing ring 11. The insertion of the sealing strips can fill the tiny gaps between the sealing rings, thereby increasing the sealing performance of the pipe connection.

[0028] 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 heat-insulating stainless steel pipe for high-pressure steam pipelines, characterized in that, It includes two stainless steel pipes (1), which are threaded together on their adjacent sides. A fixing block (3) is slidably connected to the outer wall of the left stainless steel pipe (1), and a connecting block (2) is fixedly connected to the outer wall of the right stainless steel pipe (1). Two connecting plugs (5) are fixedly connected to the left side of the connecting block (2). Two connecting grooves are opened on the right side of the fixing block (3). The outer walls of the two connecting plugs (5) are inserted into the inner walls of the connecting grooves. Two limiting blocks (7) are rotatably connected to the inner walls of the connecting grooves. The adjacent sides of the two limiting blocks (7) are inserted into the front and rear sides of the connecting plugs (5). The left sides of the two limiting blocks (7) are connected by a limiting component to adjust the rotation of the limiting blocks (7). The inner walls of the two stainless steel pipes (1) are connected by a sealing component to increase the sealing between the two stainless steel pipes (1).

2. The insulated stainless steel pipe for high-pressure steam pipelines according to claim 1, characterized in that: The limiting component includes a rotating rod (8) fixedly connected to the left end of the limiting block (7), two face gears (9) rotatably connected to the inner wall of the connecting groove, and two toothed columns (10) rotatably connected to the inner wall of the fixing block (3).

3. The insulated stainless steel pipe for high-pressure steam pipelines according to claim 2, characterized in that: The right end of the face gear (9) is fixedly connected to the left end of the rotating rod (8), and the outer wall of the face gear (9) meshes with the outer wall of the tooth column (10).

4. The insulated stainless steel pipe for high-pressure steam pipelines according to claim 3, characterized in that: The front side of the fixing block (3) is threaded with two screws (4), and the front end of the toothed column (10) is fixedly connected to the rear end of the screws (4).

5. The insulated stainless steel pipe for high-pressure steam pipelines according to claim 1, characterized in that: Multiple connecting rods (6) are fixedly connected to the left side of the connecting block (2), and the outer wall of the connecting rods (6) is inserted into the right side of the fixed block (3).

6. The insulated stainless steel pipe for high-pressure steam pipelines according to claim 1, characterized in that: The sealing assembly includes a second sealing ring (12) fixedly connected to the inner wall of the left stainless steel pipe (1), a first sealing ring (11) fixedly connected to the inner wall of the right stainless steel pipe (1), a plurality of first sealing strips (13) fixedly connected to the inner wall of the first sealing ring (11), and a plurality of second sealing strips (14) fixedly connected to the outer wall of the second sealing ring (12).

7. The insulated stainless steel pipe for high-pressure steam pipelines according to claim 6, characterized in that: The right side of the second sealing ring (12) is inserted into the left side of the first sealing ring (11), the left side of the first sealing ring (11) is inserted into the right side of the second sealing ring (12), the outer wall of the first sealing strip (13) is inserted into the outer wall of the second sealing ring (12), and the outer wall of the second sealing strip (14) is inserted into the inner wall of the first sealing ring (11).

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