Pipe flange structure of lining brick equipment

Abstract

The embodiment of the utility model provides a pipe flange structure of lining brick equipment, and relates to the technical field of lining brick equipment.The pipe flange structure of the lining brick equipment comprises a pipe flange, and one end of the pipe flange is used for being connected with an equipment shell; the protection assembly is made of a corrosion-resistant material, and the protection assembly is coaxially arranged in the pipe flange; the first sealing gasket ring is coaxially arranged at one end, far away from the equipment shell, of the pipe flange; and the second sealing gasket ring is coaxially arranged at the end, away from the equipment shell, of the protection assembly, and the second sealing gasket ring is located on the inner side of the first sealing gasket ring. According to the pipe flange structure of the lining brick equipment, the problem that in the prior art, the corrosion resisting effect of the connecting position between an external pipe fitting and a pipe flange is poor is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lining brick equipment, and particularly relates to a pipe flange structure of lining brick equipment. BACKGROUND

[0002] The lining brick equipment is widely applied to the metallurgy, coal mine, chemical industry, electric power, steel and the like, and mainly comprises an equipment shell and a lining brick layer laid on the inner wall of the equipment shell, so as to effectively resist the wear, corrosion and impact of the internal material on the equipment shell and improve the overall service life.

[0003] In the related art, in order to facilitate the connection between the lining brick equipment and the external pipe, a pipe flange is usually arranged on the equipment shell. When the external pipe is connected with the pipe flange, a sealing gasket is arranged between the pipe flange and the external pipe to seal the connection between the external pipe and the pipe flange.

[0004] However, in some scenarios, the corrosion resistance of the connection between the external pipe and the pipe flange is poor, thereby affecting the sealing effect of the connection between the external pipe and the pipe flange and the service life of the equipment. CONTENT OF THE INVENTION

[0005] The embodiment of the present application provides a pipe flange structure of lining brick equipment to solve the problem of poor corrosion resistance of the connection between the external pipe and the pipe flange in the prior art.

[0006] The embodiment of the present application provides a pipe flange structure of lining brick equipment, comprising:

[0007] a pipe flange, one end of the pipe flange being used for being connected with an equipment shell;

[0008] a protection assembly made of a corrosion-resistant material, the protection assembly being coaxially arranged in the pipe flange;

[0009] a first sealing gasket ring coaxially arranged on one end of the pipe flange away from the equipment shell;

[0010] a second sealing gasket ring coaxially arranged on one end of the protection assembly away from the equipment shell, the second sealing gasket ring being located inside the first sealing gasket ring;

[0011] The first sealing gasket ring is configured to be compressed when the pipe flange is connected with an external pipe, and to seal the connection between the external pipe and the pipe flange together with the second sealing gasket ring.

[0012] In a possible implementation, the anti-corrosion lining ring is coaxially arranged on the pipe flange away from the equipment shell, and the first gasket ring is arranged on the anti-corrosion lining ring.

[0013] In a possible implementation, the protection assembly comprises:

[0014] a lining brick layer arranged on the inner wall of the pipe flange;

[0015] a protection pipe made of a corrosion-resistant material, the protection pipe being coaxially arranged in the pipe flange, the protection pipe being attached to a side of the lining brick layer away from the pipe flange, and the second gasket ring being coaxially arranged on an end of the protection pipe away from the equipment shell.

[0016] In a possible implementation, the protection pipe comprises a corrosion-resistant inner cylinder and a corrosion-resistant flange connected to each other.

[0017] The corrosion-resistant inner cylinder is attached to the lining brick layer, and the corrosion-resistant flange is attached to a side of the pipe flange away from the equipment shell.

[0018] The second gasket ring is coaxially arranged on a side of the corrosion-resistant flange away from the pipe flange.

[0019] In a possible implementation, two second gasket rings are arranged on two sides of the corrosion-resistant flange, respectively.

[0020] In a possible implementation, the corrosion-resistant inner cylinder is provided with a plurality of through holes, through which a sealing material is injected between the corrosion-resistant inner cylinder and the lining brick layer, or through which air between the corrosion-resistant inner cylinder and the lining brick layer is discharged.

[0021] In a possible implementation, a heat insulation layer is arranged on a side of the corrosion-resistant flange facing the lining brick layer.

[0022] In a possible implementation, a lining cylinder is coaxially arranged between the pipe flange and the lining brick layer.

[0023] In a possible implementation, a rubber lining layer is arranged on the inner wall of the pipe flange between the lining cylinder and the pipe flange.

[0024] In a possible implementation, a cladding layer is arranged on the inner wall of the pipe flange.

[0025] The pipe flange structure of the lining brick equipment provided by the embodiment of the application comprises: a pipe flange, one end of the pipe flange being used for being connected with an equipment shell; a protection assembly, the protection assembly being made of a corrosion-resistant material, and the protection assembly being coaxially arranged in the pipe flange; a first gasket ring, the first gasket ring being coaxially arranged on one end of the pipe flange away from the equipment shell; and a second gasket ring, the second gasket ring being coaxially arranged on one end of the protection assembly away from the equipment shell. Thus, when an external pipe is connected with the pipe flange, the first gasket ring and the second gasket ring are clamped between the external pipe and the pipe flange at the same time, so that double-layer sealing is realized at the sealing surface of the pipe flange, so as to adapt to a high-temperature and high-pressure working environment. In addition, the protection assembly itself has better corrosion resistance, and thus has a better protection effect on the pipe flange, reduces the possibility of corrosion of the pipe flange after long-time use, improves the corrosion resistance of the connection between the external pipe and the pipe flange, reduces the influence of corrosive materials on the pipe flange, and thus solves the problem of poor corrosion resistance of the connection between the external pipe and the pipe flange in the prior art, so as to adapt to different scenes (such as high temperature and high pressure, corrosive materials, etc.). BRIEF DESCRIPTION OF DRAWINGS

[0026] The accompanying drawings, which are incorporated into and form a part of the specification, illustrate an embodiment consistent with the present application and, together with the description, serve to explain the principles of the application.

[0027] Figure 1 A structural schematic view of the pipe flange structure of the lining brick equipment provided by the application is shown in the figure.

[0028] Figure 2 A structural schematic view of the pipe flange structure of the lining brick equipment provided by the application is shown in the figure. Figure 1 An enlarged structural schematic view of part A in the figure.

[0029] Explanation of reference signs:

[0030] 10-equipment shell;

[0031] 100-pipe flange;

[0032] 200-lining brick layer;

[0033] 300-protection pipe; 310-corrosion-resistant inner cylinder; 311-through hole; 320-corrosion-resistant flange;

[0034] 400-first gasket ring;

[0035] 500-second gasket ring;

[0036] 600-corrosion-resistant lining ring;

[0037] 700-heat insulation layer;

[0038] 800-lining cylinder;

[0039] 900 - cladding layer.

[0040] The specific embodiments of the application will now be described in detail with reference to the following figures. The following description, with reference to the figures, is not meant to limit the scope of the application in any way but is merely meant to illustrate the application with reference to specific embodiments. DETAILED DESCRIPTION

[0041] The exemplary embodiments will be described in detail with reference to the accompanying drawings. The following description is made with reference to the accompanying drawings in which like reference numerals refer to like elements, and repetitive descriptions between the drawings are not made. The embodiments described in the following exemplary embodiments do not represent all of the embodiments in accordance with the application. Rather, they are merely some of the exemplary embodiments in accordance with the application, which can be embodied in various ways without departing from the spirit of the application.

[0042] In the related art, lining equipment is widely used in the metallurgical, coal mine, chemical, power, steel and other industries. The lining equipment mainly includes a device shell and a lining layer laid on the inner wall of the device shell, so as to effectively resist the wear, corrosion and impact of the internal material on the device shell, and improve the overall service life.

[0043] In order to facilitate the connection of the lining equipment and the external pipe, a pipe flange is usually arranged on the device shell. The pipe flange includes a pipe head welded to the device shell at one end and a flange welded to the other end of the pipe head. When the external pipe is connected to the pipe flange, a sealing gasket is arranged between the pipe flange and the external pipe to seal the connection between the external pipe and the pipe flange.

[0044] However, the above-mentioned pipe flange can be normally used in a low-temperature and low-pressure environment after being connected to the external pipe and actually put into use. However, in a high-temperature and high-pressure or corrosive material environment, the pipe opening edge of the pipe flange is prone to corrosion, which in turn reduces the sealing effect of the connection between the external pipe and the pipe flange, so that it is difficult to adapt to different scenes (such as high-temperature and high-pressure, corrosive materials, etc.).

[0045] Thus, the pipe flange structure of the lining brick equipment provided by the embodiment of the present application comprises: a pipe flange, one end of the pipe flange being used for being connected with an equipment shell; a protection assembly, the protection assembly being made of a corrosion-resistant material and being coaxially arranged in the pipe flange; a first gasket ring, the first gasket ring being coaxially arranged on one end of the pipe flange away from the equipment shell; and a second gasket ring, the second gasket ring being coaxially arranged on one end of the protection assembly away from the equipment shell. Thus, when an external pipe is connected with the pipe flange, the first gasket ring and the second gasket ring are simultaneously clamped between the external pipe and the pipe flange, so that the effect of double-layer sealing is realized at the sealing surface of the pipe flange, so as to adapt to the working environment of high temperature and high pressure. In addition, the protection assembly itself has better corrosion resistance, and thus has a better protection effect on the pipe flange, reduces the possibility of corrosion of the pipe flange after long-term use, reduces the influence of corrosive materials on the pipe flange, and thus solves the problem of poor corrosion resistance at the connection between the external pipe and the pipe flange in the prior art, so as to adapt to different scenes (such as high temperature and high pressure, corrosive materials, etc.).

[0046] The technical solutions of the present application and how the technical solutions of the present application solve the above technical problems will be described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes can not be described again in some embodiments. The embodiments of the present application will be described below with reference to the drawings.

[0047] As shown in Figure 1 and Figure 2 , the pipe flange structure of the lining brick equipment provided by the embodiment of the present application comprises:

[0048] a pipe flange 100, one end of the pipe flange 100 being used for being connected with an equipment shell 10;

[0049] a protection assembly, the protection assembly being made of a corrosion-resistant material and being coaxially arranged in the pipe flange 100;

[0050] a first gasket ring 400, the first gasket ring 400 being coaxially arranged on one end of the pipe flange 100 away from the equipment shell 10;

[0051] a second gasket ring 500, the second gasket ring 500 being coaxially arranged on one end of the protection assembly away from the equipment shell 10, and the second gasket ring 500 being located inside the first gasket ring 400;

[0052] the first gasket ring 400 is configured to be compressed when the pipe flange 100 is connected with an external pipe, and to seal the connection between the external pipe and the pipe flange 100 together with the second gasket ring 500.

[0053] One end of the pipe flange 100 can be connected to the equipment shell 10 by welding. In practice, the pipe flange 100 can include a pipe body and a flange, which can be coaxially fixed to one end of the pipe body by welding, one-piece forming or other methods, and then the end of the pipe body away from the flange can be connected to the equipment shell 10.

[0054] Secondly, the inner walls of the equipment shell 10 and the pipe flange 100 are paved with lining bricks to form a lining brick layer 200, that is, a lining brick equipment is constructed. In this way, the lining brick layer 200 effectively resists the wear, corrosion and impact of the material on the equipment shell 10.

[0055] It should be noted that the first gasket ring 400 is coaxially arranged on the end of the pipe flange 100 away from the equipment shell 10, and the second gasket ring 500 is coaxially arranged on the end of the protection assembly away from the equipment shell 10. The diameter of the first gasket ring 400 is greater than that of the second gasket ring 500, so that the second gasket ring 500 is also coaxially located on the inner side of the first gasket ring 400.

[0056] The first gasket ring 400 can be a winding gasket or other elastic sealing ring, and the material of the winding gasket can be made of titanium and flexible graphite composite, or other gasket forms that meet the requirements, such as tooth-shaped composite gasket ring, etc. The second gasket ring 500 can be a PTFE (polytetrafluoroethylene) gasket ring or other gasket ring.

[0057] In this way, when the external pipe is connected to the end of the pipe flange 100 away from the equipment shell 10, the first gasket ring 400 and the second gasket ring 500 will be clamped between the external pipe and the pipe flange 100 at the same time, thereby realizing the effect of double-layer sealing at the sealing surface of the pipe flange 100.

[0058] In addition, the protection assembly itself has good corrosion resistance, thereby having a good protection effect on the pipe flange 100, reducing the possibility of corrosion of the pipe flange 100 after long-term use, reducing the impact of corrosive materials on the pipe flange 100, solving the problem of poor corrosion resistance at the connection between the external pipe and the pipe flange 100 in the prior art, and thereby facilitating adaptation to different scenarios (such as high temperature and high pressure, corrosive materials, etc.).

[0059] It should be noted that the first gasket ring 400 can satisfy the sealing effect under relatively high temperature and high pressure, and the second gasket ring 500 can as far as possible avoid the internal material from flowing from the end of the protection assembly to the shell 10, thereby reducing the possibility of corrosion of the shell 10 by the material and prolonging the service life of the equipment.

[0060] In addition, in implementation, the equipment shell 10 and the pipe flange 100 on the outside can be designed as carbon steel or other materials, so that the equipment manufacturing cost can be saved on the basis of reducing the occurrence of corrosion.

[0061] In some embodiments, the protection assembly comprises:

[0062] The lining brick layer 200 is laid on the inner wall of the pipe flange 100.

[0063] The protection pipe 300 is made of corrosion-resistant material, and is coaxially arranged in the pipe flange 100. The protection pipe 300 is attached to the side of the lining brick layer 200 away from the pipe flange 100, and the second gasket ring 500 is coaxially arranged on the end of the protection pipe 300 away from the equipment shell 10.

[0064] The protection pipe 300 is made of titanium or other corrosion-resistant material. The protection pipe 300 is coaxially inserted into the pipe flange 100, and the protection pipe 300 is located inside the lining brick layer 200. The outer wall of the protection pipe 300 is attached to the lining brick layer 200.

[0065] Thus, the pipe flange 100 is protected by the lining brick layer 200 and the protection pipe 300, reducing the possibility of corrosion of the pipe flange 100 by corrosive materials, and prolonging the service life of the pipe flange 100.

[0066] As shown in Figure 1 Further, the protection pipe 300 comprises a corrosion-resistant inner cylinder 310 and a corrosion-resistant flange 320 connected to each other.

[0067] The corrosion-resistant inner cylinder 310 is attached to the lining brick layer 200, and the corrosion-resistant flange 320 is attached to the side of the pipe flange 100 away from the equipment shell 10.

[0068] The second gasket ring 500 is coaxially arranged on the side of the corrosion-resistant flange 320 away from the pipe flange 100.

[0069] Specifically, the protection pipe 300 comprises the corrosion-resistant inner cylinder 310 and the corrosion-resistant flange 320. The corrosion-resistant inner cylinder 310 and the corrosion-resistant flange 320 are made of titanium or other corrosion-resistant materials, and are integrally formed, so that the corrosion-resistant flange 320 is coaxially located at one end of the corrosion-resistant inner cylinder 310. Of course, the corrosion-resistant inner cylinder 310 and the corrosion-resistant flange 320 can also be connected by welding or other means.

[0070] In assembly, the protection pipe 300 can be inserted into the pipe flange 100 from the end of the pipe flange 100 away from the equipment shell 10, so that the corrosion-resistant inner cylinder 310 is coaxially inserted into the pipe flange 100, and the corrosion-resistant inner cylinder 310 is attached to the lining brick layer 200; the corrosion-resistant flange 320 is abutted on the side of the pipe flange 100 and the lining brick layer 200 away from the equipment shell 10.

[0071] On this basis, it can be understood that the second gasket ring 500 is coaxially arranged on the corrosion-resistant flange 320, and the second gasket ring 500 is located on the side of the corrosion-resistant flange 320 away from the pipe flange 100.

[0072] In the embodiment, the second gasket ring 500 is annular, and two second gasket rings 500 are arranged on the two sides of the corrosion-resistant flange 320. In some embodiments, the second gasket ring 500 can also be one, and the annular second gasket ring 500 is sleeved on the inner side of the corrosion-resistant flange 320. At this time, a ring groove can be formed on the inner side of the second gasket ring 500, so that after the second gasket ring 500 is sleeved on the corrosion-resistant flange 320, part of the second gasket ring 500 is located on the upper surface of the corrosion-resistant flange 320, and part of the second gasket ring 500 is located on the lower surface of the corrosion-resistant flange 320.

[0073] Therefore, after installation, the two second gasket rings 500 can be sealed from the two sides of the corrosion-resistant flange 320, reducing the possibility of material leakage from the two sides of the corrosion-resistant flange 320. Furthermore, the second gasket ring 500 can also increase the resistance of the corrosion-resistant flange 320 in the circumferential direction, reducing the possibility of rotation of the corrosion-resistant flange 320 and the protection pipe 300 as a whole.

[0074] Because, when the corrosion-resistant flange 320 is abutted on the end surface of the pipe flange 100, due to the thickness of the corrosion-resistant flange 320 itself, if the first gasket ring 400 is also to be clamped by the pipe flange 100 and the external pipe, a first gasket ring 400 with a larger thickness is required, and the sealing effect at the sealing surface is easily affected.

[0075] To this end, as shown in Figure 1 and Figure 2 In some embodiments, the pipe flange structure of the lining brick device further comprises a corrosion-resistant lining ring 600, which is coaxially arranged on the end of the pipe flange 100 away from the equipment shell 10, and the first gasket ring 400 is arranged on the corrosion-resistant lining ring 600.

[0076] It should be noted that the corrosion-resistant lining ring 600 can be coaxially connected to the pipe flange 100 away from the equipment shell 10 by welding or other means, and the corrosion-resistant lining ring 600 is located outside the corrosion-resistant flange 320, and the corrosion-resistant lining ring 600 can be made of nickel-based material or other corrosion-resistant materials.

[0077] Based on this, the first gasket ring 400 is coaxially arranged on the side of the corrosion-resistant lining ring 600 away from the pipe flange 100.

[0078] When installed, the corrosion-resistant lining ring 600 can ensure better corrosion resistance while transferring the sealing surface of the pipe flange 100, overcoming the influence of the thickness of the corrosion-resistant flange 320, and compared with using a larger thickness of the first gasket ring 400, it can ensure that the first gasket ring 400 has better use effect.

[0079] When implemented, it should be noted that the height difference between the first gasket ring 400 and the second gasket ring 500 has strict requirements to ensure that when the pipe flange 100 is connected with the external pipe, the first gasket ring 400 plays a sealing role while the second gasket ring 500 on the inside is effectively compressed, and plays a synchronous sealing role, thereby realizing a double-layer sealing effect.

[0080] For example, the first gasket ring 400 is flush with the upper surface of the second gasket ring 500 above the corrosion-resistant flange 320, so as to simultaneously clamp the first gasket ring 400 and the second gasket ring 500 when the pipe flange 100 is connected with the external pipe.

[0081] Both the first gasket ring 400 and the second gasket ring 500 can be replaced at any time according to the needs, which is convenient to operate, and thus the long-term stable operation of the equipment during use can be ensured.

[0082] As shown in Figure 1 and Figure 2 In some embodiments, the corrosion-resistant flange 320 is provided with a heat insulation layer 700 on the side facing the lining brick layer 200.

[0083] Specifically, the heat insulation layer 700 is located on the side of the corrosion-resistant flange 320 facing the lining brick layer 200, and on the side of the corrosion-resistant inner cylinder 310 facing the lining brick layer 200, and the heat insulation layer 700 is located on the end of the lining brick layer 200 away from the equipment shell 10.

[0084] When implemented, the heat insulation layer 700 can be designed according to the size of the opening of the pipe flange 100 and the thickness of the lining brick layer 200 to play a heat insulation effect on the sealing surface of the pipe flange 100. The heat insulation layer 700 can be made of heat insulation rock wool or other materials, which is not limited.

[0085] In some embodiments, the corrosion-resistant inner cylinder 310 is provided with a plurality of through holes 311 to inject sealing material between the corrosion-resistant inner cylinder 310 and the lining brick layer 200 through the through holes 311, or to discharge air between the corrosion-resistant inner cylinder 310 and the lining brick layer 200 through the through holes 311.

[0086] like Figure 1 As shown, in practice, for example, multiple through holes 311 can be opened on the corrosion-resistant inner cylinder 310. Some of the through holes 311 are used for injection molding, thus forming injection holes; some of the through holes 311 are used for venting, thus forming venting holes.

[0087] During the assembly of the protective pipe fitting 300, the air between the corrosion-resistant inner cylinder 310 and the lining brick layer 200 can be discharged through the vent hole, thereby improving the bonding effect between the corrosion-resistant inner cylinder 310 and the lining brick layer 200.

[0088] After the protective pipe fitting 300 is assembled, a sealing material (such as sealant or other materials) can be injected into the gap between the corrosion-resistant inner cylinder 310 and the lining brick layer 200 through the injection hole, thereby further reducing the gap between the corrosion-resistant inner cylinder 310 and the lining brick layer 200, improving the installation effect of the protective pipe fitting 300, reducing the possibility of some materials penetrating to the sealing surface of the pipe flange 100, and reducing the possibility of the protective pipe fitting 300 moving or rotating in the future.

[0089] Furthermore, during the injection molding process, the presence of vent holes effectively allows air to escape between the corrosion-resistant inner cylinder 310 and the lining brick layer 200, improving the injection molding effect of the sealing material.

[0090] like Figure 1 As shown, in some embodiments, the pipe flange structure of the brick lining equipment also includes a liner 800, which is coaxially disposed between the pipe flange 100 and the brick lining layer 200.

[0091] The liner 800 can be made of PTFE or other heat-insulating and corrosion-resistant materials, without limitation. This allows the liner 800 to provide heat insulation, corrosion resistance, and impact resistance, thereby optimizing the protection of the pipe flange 100.

[0092] Meanwhile, a rubber lining is provided on the inner wall of the pipe flange 100, and the rubber lining is located between the liner 800 and the pipe flange 100.

[0093] Thus, the liner 800 can be bonded to the pipe flange 100 through the rubber lining layer, and at the same time, the rubber lining layer can improve the sealing effect between the liner 800 and the pipe flange 100, which can better protect the pipe flange 100.

[0094] like Figure 1 Figure 1 As shown, a weld overlay 900 is provided on the inner wall of the pipe flange 100.

[0095] In implementation, a corrosion-resistant layer can be built up on the inner wall of the pipe flange 100, and finally the rubber lining layer is arranged on the built-up layer 900. The built-up layer 900 can be built up by different corrosion-resistant alloy materials, such as stainless steel, nickel-based alloy, cobalt-based alloy, etc., so as to form the built-up layer 900. The built-up layer 900 can further protect the pipe flange 100. If a small amount of corrosive material leaks to this part through the sealing surface, the corrosive material is directly in contact with the built-up layer 900, rather than directly in contact with the inner wall of the pipe flange 100. Therefore, the built-up layer 900 improves the corrosion resistance of the pipe flange 100 and prolongs the service life.

[0096] In summary, in the embodiment of the present application, the sealing surface of the pipe flange 100 is a double-sealing structure (such as the first sealing gasket ring 400 and the second sealing gasket ring 500), and the components that may be in contact with the material are made of corrosion-resistant materials (such as the second sealing gasket ring 500 and the protective pipe 300 made of PTFE material). In operation, the first sealing gasket ring 400 is mainly responsible for pressure bearing, which is mainly achieved by tightening the first sealing gasket ring 400 when the pipe flange 100 is screwed with the external pipe, so as to achieve sealing effect and meet the use of the equipment under various pressure and temperature conditions. The second sealing gasket ring 500 has strict requirements on the height difference with the first sealing gasket ring 400 during use, so as to ensure that when the pipe flange 100 is connected with the external pipe, the first sealing gasket ring 400 plays a sealing role, and at the same time, the second sealing gasket ring 500 can also be effectively compressed, playing a synchronous sealing role. At the same time, the built-up layer 900, the rubber lining layer and the bushing 800 can achieve multiple protection for the pipe flange 100, so as to minimize the direct contact of the material with the pipe flange 100, thereby reducing the possibility of corrosion of the pipe flange 100.

[0097] In summary, the pipe flange structure of the lining brick equipment provided by the embodiment of the present application can achieve the effect of double-layer sealing at the sealing surface of the pipe flange 100 when the external pipe is connected with the end of the pipe flange 100 away from the equipment shell 10, so as to adapt to the high-temperature and high-pressure working environment. In addition, the protective assembly itself has good corrosion resistance, thereby having a good protective effect on the pipe flange 100, reducing the possibility of corrosion of the pipe flange 100 after long-term use, and solving the problem of poor corrosion resistance at the connection between the external pipe and the pipe flange 100 in the prior art, so as to adapt to different scenes (such as high temperature and high pressure, corrosive materials, etc.).

[0098] It should be understood that many variations can be made in the embodiments described and shown which should be considered within the scope of the present application as defined by the appended claims.

Claims

1. A pipe flange structure of a lining brick apparatus, characterized by, The device comprises: a pipe flange (100), one end of which is used to be connected with a device shell (10); a protection assembly made of corrosion-resistant material, which is coaxially arranged in the pipe flange (100); a first gasket ring (400), which is coaxially arranged on the end of the pipe flange (100) away from the device shell (10); a second gasket ring (500), which is coaxially arranged on the end of the protection assembly away from the device shell (10) and is located inside the first gasket ring (400); the first gasket ring (400) is configured to be compressed when the pipe flange (100) is connected with an external pipe, and to seal the connection between the external pipe and the pipe flange (100) together with the second gasket ring (500).

2. The pipe flange structure of a lining brick apparatus according to claim 1, wherein Further comprising a corrosion-resistant lining ring (600), which is coaxially arranged on the end of the pipe flange (100) away from the device shell (10), and the first gasket ring (400) is arranged on the corrosion-resistant lining ring (600).

3. The pipe flange structure of a lining brick apparatus according to claim 1, wherein The protection assembly comprises: a lining brick layer (200) laid on the inner wall of the pipe flange (100); a protection pipe (300) made of corrosion-resistant material, which is coaxially arranged in the pipe flange (100) and is attached to the side of the lining brick layer (200) away from the pipe flange (100), and the second gasket ring (500) is coaxially arranged on the end of the protection pipe (300) away from the device shell (10).

4. The pipe flange structure of the lining brick apparatus according to claim 3, characterized by The protection pipe (300) comprises a corrosion-resistant inner cylinder (310) and a corrosion-resistant flange (320) connected with each other; the corrosion-resistant inner cylinder (310) is attached to the lining brick layer (200), and the corrosion-resistant flange (320) is attached to the side of the pipe flange (100) away from the device shell (10); the second gasket ring (500) is coaxially arranged on the side of the corrosion-resistant flange (320) away from the pipe flange (100).

5. The pipe flange structure of a lining brick apparatus according to claim 4, wherein Two second gasket rings (500) are arranged on the two sides of the corrosion-resistant flange (320) respectively.

6. The pipe flange structure of the lining brick apparatus according to claim 4, wherein The corrosion-resistant inner cylinder (310) is provided with a plurality of through holes (311) for injecting sealing material between the corrosion-resistant inner cylinder (310) and the lining brick layer (200) through the through holes (311) or discharging air between the corrosion-resistant inner cylinder (310) and the lining brick layer (200) through the through holes (311).

7. The pipe flange structure of a lining brick apparatus according to claim 4, wherein The side of the corrosion-resistant flange (320) facing the lining brick layer (200) is provided with a heat insulation layer (700).

8. A pipe flange structure of a lining brick apparatus according to any one of claims 3 to 7, characterized in that, A liner tube (800) is coaxially arranged between the pipe flange (100) and the lining brick layer (200).

9. The pipe flange structure of a lining brick apparatus according to claim 8, wherein A rubber lining layer is arranged on the inner wall of the pipe flange (100) and is located between the liner tube (800) and the pipe flange (100).

10. The pipe flange structure of a lining brick apparatus according to any one of claims 1 to 7, characterized in that, A surfacing layer (900) is arranged on the inner wall of the pipe flange (100).

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