Porous silicon carbide tube

Abstract

The utility model belongs to the field of porous silicon carbide pipes, and particularly relates to a porous silicon carbide pipe which comprises a porous silicon carbide pipe body, the two ends of the porous silicon carbide pipe body are fixedly connected with connecting pipes through flange plates, sealing mechanisms are arranged on the two sides of the porous silicon carbide pipe body, and each sealing mechanism comprises a sealing washer. The porous silicon carbide pipe body, the connecting pipe and the sealing mechanism are used in cooperation, the porous silicon carbide pipe body and the connecting pipe are fixedly connected through the flange plate, meanwhile, the joint of the porous silicon carbide pipe body and the connecting pipe is sealed through the sealing mechanism, and the situation that gas and liquid are prone to leaking from the pipe wall due to the porous structure of the porous silicon carbide pipe is avoided; the problems that a traditional sealing gasket is not resistant to high temperature, gas or liquid in the pipe may leak out under the high-temperature working environment of the silicon carbide pipe, normal work of the porous silicon carbide pipe is affected, and the leaked gas or liquid may affect the health of surrounding workers are solved.

Description

Technical Field

[0001] This utility model relates to the field of porous silicon carbide tubes, specifically a porous silicon carbide tube. Background Technology

[0002] Porous silicon carbide tubes are tubular porous structures made primarily of silicon carbide. They possess excellent properties such as high strength, high thermal conductivity, corrosion resistance, and high temperature resistance, and are widely used in chemical, environmental protection, and energy fields.

[0003] Porous silicon carbide tubes are used in many fields. However, the porous structure of porous silicon carbide tubes makes it easy for gas and liquid to leak from the tube wall. Traditional gaskets are not resistant to high temperatures and may cause gas or liquid to leak out of the tube under the high temperature working environment of silicon carbide tubes, thereby affecting the normal operation of porous silicon carbide tubes. The leaked gas or liquid may affect the health of the surrounding workers. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, the porous structure of porous silicon carbide tubes makes it easy for gas and liquid to leak from the tube wall. Traditional sealing gaskets are not resistant to high temperatures and may cause gas or liquid to leak out of the tube under the high-temperature working environment of silicon carbide tubes, thereby affecting the normal operation of porous silicon carbide tubes. The leaked gas or liquid may affect the health of surrounding workers. This utility model proposes a porous silicon carbide tube.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a porous silicon carbide tube, including a porous silicon carbide tube body, both ends of the porous silicon carbide tube body are fixedly connected to connecting pipes through flanges, and sealing mechanisms are provided on both sides of the porous silicon carbide tube body.

[0006] The sealing mechanism includes a sealing gasket, the surface of which contacts the surface of the porous silicon carbide tube body. The sealing gasket is made of expanded graphite. The surface of the sealing gasket is threaded with three threaded posts. The inner cavity of each threaded post is movably connected to a sliding post. The inner cavity of each sliding post is movably connected to four ball bearings. The surface of each sliding post is movably connected to a fixed base. The surface of the fixed base is fixedly connected to the inner cavity of the porous silicon carbide tube body.

[0007] Preferably, the inner cavity of the fixed base is provided with a first limiting groove, the first limiting groove is set at an angle, and the surface of the first limiting groove is in contact with the surface of the ball.

[0008] Preferably, the surface of the threaded column is provided with four mounting grooves, and the inner cavity of each mounting groove is movably connected to the surface of one of the balls.

[0009] Preferably, the surface of the sliding column is provided with a second limiting groove, the second limiting groove is set at an angle, and the surface of the second limiting groove is in contact with the surface of the ball.

[0010] Preferably, the inner cavity of the threaded column is provided with a guide groove, and a sliding block is movably connected to the inner cavity of the guide groove. The surface of the sliding block is fixedly connected to the surface of the sliding column.

[0011] Preferably, a spring is fitted onto the surface of the sliding column, one end of the spring is fixedly connected to the inner cavity of the threaded column, and the other end of the threaded column is fixedly connected to the surface of the sliding column.

[0012] Preferably, the inner cavity of the threaded column is provided with a sliding groove, and the inner wall of the sliding groove is in close contact with the surface of the spring.

[0013] The advantages of this utility model are:

[0014] This invention utilizes a porous silicon carbide tube body, a connecting pipe, and a sealing mechanism. While the porous silicon carbide tube body and the connecting pipe are fixedly connected by a flange, the sealing mechanism seals the connection point. This prevents gas and liquid from easily leaking from the tube wall due to the porous structure of the porous silicon carbide tube. Traditional sealing gaskets are not heat-resistant and may cause gas or liquid to leak out of the tube under high-temperature operating conditions, thus affecting the normal operation of the porous silicon carbide tube. The leaked gas or liquid may also affect the health of nearby workers. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the connecting pipe of this utility model;

[0018] Figure 3 This is a schematic diagram of the threaded column structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the cross-sectional structure of the threaded column of this utility model;

[0020] Figure 5 This is a schematic diagram of the exploded structure of the threaded column of this utility model.

[0021] In the figure: 1. Porous silicon carbide tube body; 2. Connecting pipe; 3. Sealing mechanism; 301. Sealing gasket; 302. Threaded post; 303. Fixed base; 304. First limiting groove; 305. Ball bearing; 306. Guide groove; 307. Sliding block; 308. Sliding groove; 309. Sliding post; 310. Spring; 311. Second limiting groove; 312. Mounting groove. Detailed Implementation

[0022] 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 scope of protection of the present utility model.

[0023] The following combination Figure 1-5 This application will be described in further detail.

[0024] This application discloses a porous silicon carbide tube. (Refer to...) Figure 1 and Figure 5 A porous silicon carbide tube includes a porous silicon carbide tube body 1, both ends of the porous silicon carbide tube body 1 are fixedly connected to connecting pipes 2 by flanges, and sealing mechanisms 3 are provided on both sides of the porous silicon carbide tube body 1.

[0025] The sealing mechanism 3 includes a sealing gasket 301. The surface of the sealing gasket 301 is in contact with the surface of the porous silicon carbide tube body 1. The sealing gasket 301 is made of expanded graphite. The surface of the sealing gasket 301 is threaded with three threaded posts 302. The inner cavity of the threaded posts 302 is movably connected with a sliding post 309. The inner cavity of the sliding post 309 is movably connected with four balls 305. The surface of each sliding post 309 is movably connected with a fixed base 303. The surface of the fixed base 303 is fixedly connected to the inner cavity of the porous silicon carbide tube body 1.

[0026] Reference Figure 4 The inner cavity of the fixed base 303 is provided with a first limiting groove 304. The first limiting groove 304 is set with an inclined surface. The surface of the first limiting groove 304 contacts the surface of the ball 305. When the ball 305 is subjected to outward pressure and contacts the inclined surface of the first limiting groove 304, the ball 305 is locked and fixed by the inclined surface of the first limiting groove 304, which indirectly fixes the threaded column 302, thereby causing the threaded column 302 to drive the sealing gasket 301 to be fixed on the surface of the porous silicon carbide tube body 1.

[0027] Reference Figure 5 The surface of the threaded column 302 is provided with four mounting grooves 312. The inner cavity of each mounting groove 312 is movably connected to the surface of a ball 305. The mounting grooves 312 provide mounting space and guidance for the ball 305. Under the action of external force, the ball 305 can slide in the inner cavity of the ball 305.

[0028] Reference Figure 4 and Figure 5 The sliding column 309 has a second limiting groove 311 on its surface. The second limiting groove 311 is inclined and its surface contacts the surface of the ball 305. When the sliding column 309 moves to one side, the inclined surface of the second limiting groove 311 can generate an outward pushing force on the ball 305 until the surface of the ball 305 engages with the inclined surface of the first limiting groove 304 in the fixed base 303, thereby indirectly fixing the threaded column 302 and the fixed base 303.

[0029] Reference Figure 4 The inner cavity of the threaded column 302 is provided with a guide groove 306, and a sliding block 307 is movably connected to the inner cavity of the guide groove 306. The surface of the sliding block 307 is fixedly connected to the surface of the sliding column 309. By setting the guide groove 306 and the sliding block 307 to work together, the sliding column 309 is guided when it slides in the inner cavity of the threaded column 302, while preventing the sliding column 309 from rotating unnecessarily, thus improving the stability of the sliding column 309 in the inner cavity of the threaded column 302.

[0030] Reference Figure 4 and Figure 5 A spring 310 is fitted on the surface of the sliding column 309. One end of the spring 310 is fixedly connected to the inner cavity of the threaded column 302, and the other end of the threaded column 302 is fixedly connected to the surface of the sliding column 309. With the spring 310, when the sliding column 309 is not subjected to external force, the elastic expansion of the spring 310 drives the sliding column 309 to move. The inclined surface of the second limiting groove 311 in the sliding column 309 generates an outward pushing force on the ball 305, which makes the surface of the ball 305 come into close contact with the inclined surface of the first limiting groove 304 in the fixed base 303, thereby fixing the threaded column 302 and the fixed base 303.

[0031] Reference Figure 4 The inner cavity of the threaded column 302 is provided with a sliding groove 308. The inner wall of the sliding groove 308 is in close contact with the surface of the spring 310. The sliding groove 308 provides an installation position for the spring 310 and limits the compression or expansion movement of the spring 310, so as to prevent the spring 310 from deforming and affecting its use after long-term use.

[0032] Working principle: Generally, the porous silicon carbide tube body 1 is fixedly installed between the connecting pipes 2 required in different fields via flanges. If it is desired to seal the connection between the porous silicon carbide tube body 1 and the connecting pipe 2, traditional rubber structures cannot seal the gap between the porous silicon carbide tube body 1 and the connecting pipe 2 due to their inability to withstand high temperatures. Therefore, a sealing mechanism 3 can be installed at the connection between the porous silicon carbide tube body 1 and the connecting pipe 2. First, the sliding column 309 is pressed down, which drives the sliding block 307 to slide within the inner cavity of the threaded column 302, causing the spring 310 to undergo compression deformation. Simultaneously, since the threaded column 302 and the sealing washer 301 are connected by threads, moving the threaded column 302 can move the sealing washer 301. Then, the threaded column 302 is inserted into the fixed base 303. Since the sliding column 309 has been moved, the ball 305 is pushed by the inner wall of the fixed base 303 to the recess of the second limiting groove 311 in the sliding column 309 when it contacts the inner wall of the fixed base 303. When the threaded column 302 is inserted into the appropriate position of the fixed base 303, the force on the sliding column 309 is released. At this time, due to the elastic action of the spring 310, it unfolds, thereby driving the sliding column 309 to move in the opposite direction. Guided by the inclined surface of the second limiting groove 311 in the sliding column 309, the ball 305 is pushed to contact the inclined surface of the first limiting groove 304 in the fixed base 303. At this time, the ball 305 is engaged with the inclined surface of the first limiting groove 304, thereby indirectly fixing the position of the sealing gasket 301 to the porous silicon carbide tube body 1, and sealing the connection between the porous silicon carbide tube body 1 and the connecting pipe 2.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A porous silicon carbide tube, comprising a porous silicon carbide tube body (1), characterized in that: Both ends of the porous silicon carbide tube body (1) are fixedly connected to connecting pipes (2) via flanges, and both sides of the porous silicon carbide tube body (1) are provided with sealing mechanisms (3). The sealing mechanism (3) includes a sealing gasket (301), the surface of which is in contact with the surface of the porous silicon carbide tube body (1). The sealing gasket (301) is made of expanded graphite. The surface of the sealing gasket (301) is threaded with threaded posts (302). There are three threaded posts (302). The inner cavity of the threaded posts (302) is movably connected with a sliding post (309). The inner cavity of the sliding post (309) is movably connected with a ball (305). There are four ball (305). The surface of each sliding post (309) is movably connected with a fixed base (303). The surface of the fixed base (303) is fixedly connected to the inner cavity of the porous silicon carbide tube body (1).

2. The porous silicon carbide tube according to claim 1, characterized in that: The inner cavity of the fixed base (303) is provided with a first limiting groove (304), the first limiting groove (304) is set with an inclined surface, and the surface of the first limiting groove (304) is in contact with the surface of the ball (305).

3. A porous silicon carbide tube according to claim 1, characterized in that: The surface of the threaded post (302) is provided with mounting grooves (312), and there are four mounting grooves (312). The inner cavity of each mounting groove (312) is movably connected to the surface of one of the ball bearings (305).

4. A porous silicon carbide tube according to claim 1, characterized in that: The sliding column (309) has a second limiting groove (311) on its surface. The second limiting groove (311) is set at an angle and the surface of the second limiting groove (311) is in contact with the surface of the ball (305).

5. A porous silicon carbide tube according to claim 1, characterized in that: The inner cavity of the threaded column (302) is provided with a guide groove (306), and a sliding block (307) is movably connected to the inner cavity of the guide groove (306). The surface of the sliding block (307) is fixedly connected to the surface of the sliding column (309).

6. A porous silicon carbide tube according to claim 1, characterized in that: A spring (310) is fitted on the surface of the sliding column (309). One end of the spring (310) is fixedly connected to the inner cavity of the threaded column (302), and the other end of the threaded column (302) is fixedly connected to the surface of the sliding column (309).

7. A porous silicon carbide tube according to claim 1, characterized in that: The inner cavity of the threaded column (302) is provided with a sliding groove (308), and the inner wall of the sliding groove (308) is in close contact with the surface of the spring (310).

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