CN217714162U

CN217714162U - Prevent tuber pipe and prevent tuber pipe system of discharging fume

Info

Publication number: CN217714162U
Application number: CN202220192689.2U
Authority: CN
Inventors: 谭伦
Original assignee: Beijing Hxwy Heat Preservation Science And Technical Co ltd
Current assignee: Beijing Hxwy Heat Preservation Science And Technical Co ltd
Priority date: 2022-01-24
Filing date: 2022-01-24
Publication date: 2022-11-01
Anticipated expiration: 2032-01-24

Abstract

The utility model relates to a technical field of the system of discharging fume particularly, relates to a prevent and discharge fume tuber pipe and prevent and discharge fume tuber pipe system, including body, flange and adiabatic gasket, the body includes the shell, the flange is fixed in the shell the flange with be provided with first fire-resistant sealing layer between the shell, the flange is located the tip of body, adiabatic gasket set up in the terminal surface of body, adiabatic gasket extends to the flange covers at least a part of flange. The utility model provides a flange to current compound tuber pipe of preventing discharging fume is difficult to satisfy the fire endurance that is higher than 300 degrees high temperature flue gases and tests, and this brings the problem of hidden danger for the safe handling of compound tuber pipe system of preventing discharging fume, provides a prevent discharging fume tuber pipe and prevent discharging fume tuber pipe system.

Description

Prevent tuber pipe and prevent tuber pipe system of discharging fume

Technical Field

The application relates to the technical field of smoke exhaust systems, in particular to a smoke exhaust prevention air pipe and a smoke exhaust prevention air pipe system.

Background

The anti-smoke composite air pipe system adopted by the subway generally comprises a plurality of anti-smoke composite air pipes which are connected end to end, two adjacent anti-smoke composite air pipes are connected through flanges, the tightness of the connection between the adjacent flanges has a large influence on the tightness between the anti-smoke composite air pipes, and therefore the fire resistance of the flanges and the deformation resistance at high temperature are very important. Although the flange of the existing smoke-preventing and exhaust composite air pipe can meet the fire-resistant requirement of common smoke at high temperature close to 300 ℃, the flange is difficult to meet the fire-resistant limit test of high-temperature smoke at temperature higher than 300 ℃, and the flange brings hidden danger to the safe use of the smoke-preventing and exhaust composite air pipe system.

SUMMERY OF THE UTILITY MODEL

The utility model provides a flange to current prevent discharging fume composite air pipe is difficult to satisfy the fire-resistant limit test that is higher than 300 degrees high temperature flue gas, and this brings the problem of hidden danger for the safe handling of preventing discharging fume composite air pipe system, provides a prevent discharging fume the tuber pipe and prevent discharging fume the tuber pipe system.

In order to achieve the purpose, the following technical scheme is adopted in the application:

an aspect of the embodiment of the application provides a prevent tuber pipe of discharging fume, including body, flange and adiabatic gasket, the body includes the shell, the flange is fixed in the shell the flange with be provided with first fire-resistant sealing layer between the shell, the flange is located the tip of body, adiabatic gasket set up in the terminal surface of body, adiabatic gasket extends to the flange covers at least a part of the flange.

Optionally, the first layer of refractory sealing is fixedly attached to the housing, the first layer of refractory sealing covering at least a portion of the flange.

The technical scheme has the beneficial effects that: therefore, certain heat can be separated through the first fireproof sealing layer, the flange can be firmly installed on the shell, and reliable connection strength is obtained when the flange is connected with the adjacent smoke prevention and exhaust air pipe.

Optionally, the pipe body further comprises an insulating refractory layer, and the outer shell covers the insulating refractory layer in a direction from inside the pipe body to outside the pipe body.

The technical scheme has the beneficial effects that: through setting up thermal-insulated flame retardant coating, form another layer of separation to the flue gas to flange heat transfer, reduce the heat that the flange obtained from the flue gas, make the flange can satisfy the fire endurance examination of higher temperature flue gas.

Optionally, the pipe body further comprises an inner shell, and the heat insulating refractory layer covers the inner shell in a direction from inside the pipe body to outside the pipe body.

The technical scheme has the beneficial effects that: the inner shell and the outer shell support the heat-insulating fire-resistant layer, the flange and the heat-insulating gasket together, and the inner shell also forms a layer of heat-insulating layer between the flue gas and the flange, so that the heat transferred to the flange by the flue gas is reduced.

Optionally, a second refractory sealing layer is provided between the inner shell and the insulating refractory layer.

The technical scheme has the beneficial effects that: the second refractory sealing layer can connect the inner shell and the heat-insulating refractory layer on one hand, and can play a role in blocking heat transfer on the other hand.

Optionally, an antimicrobial coating is provided on the inside of the inner shell, covering the inside of the inner shell.

The technical scheme has the beneficial effects that: in the smoke prevention and exhaust air pipe system, part of smoke prevention and exhaust air pipes can be used for ventilation, so that the antibacterial coating is arranged on the inner side of the inner shell, and later maintenance is facilitated.

Optionally, the inner shell further comprises an angle iron angle bead positioned on the inner side of the inner shell, the cross section of the angle iron angle bead is right-angled, the cross section of the pipe body is square-shaped, and the angle iron angle bead is fixed at the right angle of the inner shell.

The technical scheme has the beneficial effects that: because flue gas temperature is higher in the body, the stress concentration easy fracture of right angle department of inner tube through set up the angle bar angle bead in right angle department, can increase the intensity of the right angle department of inner shell, makes the right angle department of inner shell difficult fracture.

Another aspect of the present application provides a smoke prevention and exhaust air duct system comprising a smoke prevention and exhaust air duct provided by the present application.

Optionally, the flue gas prevention and exhaust air pipe system provided by the application comprises at least two flue gas prevention and exhaust air pipes, wherein the flanges of one flue gas prevention and exhaust air pipe and the flanges of the other flue gas prevention and exhaust air pipe are provided with the heat insulation gasket.

The technical scheme has the beneficial effects that: in this way, heat transfer between the flanges is reduced by the insulating spacers, and heat transfer from the gap between the flanges to the flanges is reduced.

Optionally, the flange of one of the two adjacent smoke prevention and exhaust air pipes is connected with the flange of the other smoke prevention and exhaust air pipe through a bolt, and the bolt does not penetrate through the heat insulation gasket.

The technical scheme has the beneficial effects that: if the bolt penetrates through the heat insulation gasket, the material of the bolt is equivalent to replace partial material on the heat insulation gasket, so that the heat insulation capacity of the heat insulation gasket is reduced, and the bolt does not penetrate through the heat insulation gasket, so that the heat insulation gasket is a complete whole and has better heat insulation effect.

The technical scheme provided by the application can achieve the following beneficial effects:

the utility model provides a prevent discharging fume tuber pipe and prevent discharging fume tuber pipe system forms the bridge cut-off through set up first fire-resistant sealing layer between flange and shell, reduces the heat that the interior flue gas transmission of body gives the flange, and this prevent discharging fume tuber pipe's flange is when the flange with adjacent prevent discharging fume tuber pipe is connected, because adiabatic gasket extends to the flange and covers at least from the terminal surface of body a part of flange, adiabatic gasket are located between this prevent discharging fume tuber pipe's flange and the adjacent prevent discharging fume tuber pipe's flange, play the effect of certain heat transfer of blocking, and, because adiabatic gasket set up in the terminal surface of body for adiabatic gasket plays certain thermal-insulated effect in the clearance between two adjacent flanges, reduces the heat that the flue gas transmitted the flange from this clearance, and then makes the flange can satisfy the fire-resistant limit test of higher temperature flue gas.

Additional features and advantages of the present application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the present application.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings used in the description of the embodiments will be briefly described below. It should be apparent that the drawings in the following description are embodiments of the present application and that other drawings may be derived from those drawings by a person of ordinary skill in the art without inventive step.

Fig. 1 is a schematic top view of a part of an embodiment of a smoke exhaust prevention duct provided in an example of the present application, wherein heat insulation spacers are not shown;

FIG. 2 isbase:Sub>A schematic cross-sectional view taken at A-A of FIG. 1, showing the insulating spacer;

FIG. 3 is an enlarged view of a portion of FIG. 2 at B;

fig. 4 is a partial structural schematic view of a smoke prevention and exhaust air duct system provided in the embodiment of the present application.

Reference numerals are as follows:

1-an inner shell; 2-angle iron angle protection;

3-heat insulation refractory layer; 4-a first refractory sealing layer;

5-a flange; 6-insulating spacers;

8-a housing; 9-a second refractory sealing layer;

10-bolt; 100-smoke prevention and exhaust air pipe.

Detailed Description

The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

As shown in fig. 1 to 4, an aspect of the embodiment of the present application provides a smoke prevention and exhaust air duct 100, which includes a duct body, a flange 5 and a heat insulation gasket 6, wherein the duct body includes an outer casing 8, the flange 5 is fixed to the outer casing 8, a first fire-resistant sealing layer 4 is disposed between the flange 5 and the outer casing 8, the flange 5 is located at an end of the duct body, the heat insulation gasket 6 is disposed on an end surface of the duct body, and the heat insulation gasket 6 extends to the flange 5 and covers at least a portion of the flange 5.

In the embodiment of the application, the flange 5 is preferably an angle steel flange 5, the first fireproof sealing layer 4 is preferably a fireproof sealant, and the heat insulation gasket 6 is preferably a ceramic limit gasket; while the first fireproof sealing layer 4 is arranged between the flange 5 and the shell 8, the heat insulation gasket 6 can be arranged, so that the heat transferred to the flange 5 by the flue gas through the pipe body is further reduced; it will be appreciated that the housing 8 is a tubular housing 8, and that the housing 8 is preferably made of color steel.

The utility model provides an air pipe 100 of preventing discharging fume, through set up first fire-resistant sealing layer 4 formation bridge cut-off between flange 5 and shell 8, reduce the heat that the interior flue gas of body transmitted flange 5, this air pipe 100 of preventing discharging fume's flange 5 when being connected with adjacent flange 5 of air pipe 100 of preventing discharging fume, because adiabatic gasket 6 extends to flange 5 and covers at least from the terminal surface of body a part of flange 5, adiabatic gasket 6 is located between flange 5 of this air pipe 100 of preventing discharging fume and the adjacent flange 5 of air pipe 100 of preventing discharging fume, plays the effect of certain heat transfer of blocking, and, because adiabatic gasket 6 set up in the terminal surface of body for adiabatic gasket 6 plays certain thermal-insulated effect in the clearance between two adjacent flanges 5, reduces the heat that the flue gas transmitted flange 5 from this clearance, and then makes flange 5 can satisfy the fire endurance test of higher temperature flue gas.

Optionally, the first layer 4 of refractory sealing is fixedly attached to the housing 8, the first layer 4 of refractory sealing covering at least a portion of the flange 5. Therefore, certain heat can be separated by the first fireproof sealing layer 4, and the flange 5 can be firmly arranged on the shell 8, so that reliable connection strength can be obtained when the flange is connected with the adjacent smoke and smoke preventing air pipe 100. Of course, the first refractory sealing layer 4 may also cover the entire gap between the flange 5 and the outer shell 8.

Optionally, the pipe body further comprises a heat insulation and fire resistance layer 3, and the outer shell 8 covers the heat insulation and fire resistance layer 3 in the direction from the inside of the pipe body to the outside of the pipe body. In the embodiment of the present application, the heat-insulating fire-resistant layer 3 is preferably made of a nano heat-insulating fire-resistant core material, and particularly may be preferably made of an aerogel heat-insulating material, the heat conductivity value of the aerogel heat-insulating material may reach 0.023W/(m.k), which is one of the most efficient heat-insulating materials at present, and the material itself belongs to an inorganic non-combustible material, so the design thickness of the heat-insulating fire-resistant layer 3 in the embodiment of the present application may be 30mm or 40mm, which is relatively reduced, reduces the usage space, and has a moderate weight, and is convenient for installation and construction. It will be appreciated that the insulating refractory 3 forms a tubular structure with the outer shell 8 nested within the insulating refractory 3 and the outer shell 8 connected to the insulating refractory 3. Through setting up thermal-insulated flame retardant coating 3, form another layer of separation to the flue gas to flange 5 heat transfer, reduce flange 5 from the heat that the flue gas obtained, make flange 5 can satisfy the fire endurance examination of higher temperature flue gas.

Optionally, the pipe body further comprises an inner shell 1, and the insulating refractory layer 3 covers the inner shell 1 in a direction from inside the pipe body to outside the pipe body. In the embodiment of the present application, the inner case 1 is preferably made of a color steel plate. It will be appreciated that the inner shell 1 is formed as a tubular structure, the insulating refractory layer 3 forming the tubular structure being fitted over the inner shell 1, the insulating refractory layer 3 being connected to the inner shell 1. The inner shell 1 and the outer shell 8 support the heat-insulating fire-resistant layer 3, the flange 5 and the heat-insulating gasket 6 together, and the inner shell 1 also forms a heat-insulating layer between the flue gas and the flange 5, so that the heat transferred to the flange 5 by the flue gas is reduced.

Optionally, a second refractory sealing layer 9 is provided between the inner shell 1 and the insulating refractory layer 3. In the embodiment of the present application, the second fire-resistant sealing layer 9 is preferably a fire-resistant sealant, the second fire-resistant sealing layer 9 may cover the whole inner casing 1, and when the cross section of the pipe body is in a shape of a Chinese character 'hui', the second fire-resistant sealing layer 9 may also be only disposed at a right angle position of the inner casing 1. The second refractory sealing layer 9 may on the one hand connect the inner shell 1 and the insulating refractory layer 3 and on the other hand serve the purpose of blocking the heat transfer.

Optionally, an antimicrobial coating is provided on the inner side of the inner shell 1, said antimicrobial coating covering the inner side of the inner shell 1. In the system of the smoke exhaust prevention air duct 100, because part of the smoke exhaust prevention air duct 100 may be used for ventilation, the inner side of the inner shell 1 is provided with an antibacterial coating, which is beneficial to the later maintenance.

Optionally, the smoke and dust preventing air duct 100 provided in the embodiment of the present application further includes an angle iron angle bead 2 located inside the inner casing 1, a cross section of the angle iron angle bead 2 is right-angled, a cross section of the duct body is square-shaped, and the angle iron angle bead 2 is fixed at a right angle of the inner casing 1. It will be appreciated that the right angle formed by the angle iron corner protectors 2 is embedded in and connected to the right angle of the inner shell 1. Because flue gas temperature is higher in the body, the easy fracture of the right angle department stress concentration of inner tube, through set up angle bar angle bead 2 in right angle department, can increase the intensity of the right angle department of inner shell 1, make the right angle department of inner shell 1 difficult fracture.

Another aspect of the present application provides a system of smoke prevention ductwork 100, including a smoke prevention ductwork 100 as provided by embodiments of the present application.

The utility model provides a prevent tuber pipe 100 system of discharging fume that this application embodiment provided has adopted the prevent tuber pipe 100 of discharging fume that this application embodiment provided, forms the bridge cut-off through setting up first fire-resistant sealing layer 4 between flange 5 and shell 8, reduces the heat that the interior flue gas transmission of body gives flange 5, and this prevent that flange 5 of tuber pipe 100 of discharging fume is when being connected with adjacent flange 5 of preventing tuber pipe 100 of discharging fume, because adiabatic gasket 6 extends to flange 5 and covers at least from the terminal surface of body a part of flange 5, adiabatic gasket 6 are located between flange 5 of this prevent that flange 5 of tuber pipe 100 of discharging fume and adjacent flange 5 of preventing the tuber pipe 100 of discharging fume, play the effect of certain heat transfer of blocking, and, because adiabatic gasket 6 set up in the terminal surface of body for adiabatic gasket 6 plays certain thermal-insulated action in the clearance between two adjacent flanges 5, reduce the heat that the flue gas transmitted flange 5 from this clearance, and then make flange 5 can satisfy the fire endurance test of higher temperature flue gas.

Optionally, the system of the smoke and smoke prevention duct 100 provided in this embodiment of the application includes at least two of the smoke and smoke prevention ducts 100, and the heat insulating spacer 6 is disposed between the flange 5 of one of the smoke and smoke prevention ducts 100 and the flange 5 of the other smoke and smoke prevention duct 100 in two adjacent smoke and smoke prevention ducts 100. In this way, heat transfer between the flanges 5 is reduced by the heat insulating spacer 6, and heat transfer from the gap between the flanges 5 to the flanges 5 is reduced.

Optionally, the flange 5 of one smoke prevention and exhaust air duct 100 of two adjacent smoke prevention and exhaust air ducts 100 is connected with the flange 5 of the other smoke prevention and exhaust air duct 100 through a bolt 10, and the bolt 10 does not penetrate through the heat insulation gasket 6. If the bolt 10 is passed through the heat insulating spacer 6, it is equivalent to replacing part of the material on the heat insulating spacer 6 with the material of the bolt 10, so that the heat insulating capability of the heat insulating spacer 6 is reduced, and the bolt 10 is not passed through the heat insulating spacer 6, so that the heat insulating spacer 6 is a complete whole body, and the heat insulating effect is better.

The smoke prevention and exhaust air duct 100 and the smoke prevention and exhaust air duct 100 system provided by the embodiment of the application have the advantages that the structure is simple, the thickness is small and the use space is reduced under the condition that various requirements are met; the weight is moderate, and the installation and construction are convenient. Stable structure, high safety, long service life and low maintenance cost. The product price is similar to the high-quality smoke prevention and exhaust composite air pipe in the current market, and the market competitiveness is kept. The bridge cut-off design, for preventing compound tuber pipe separation heat transfer increase weight of discharging fume, and probably optimize to become the ventilation tuber pipe and prevent 100 two unification products of tuber pipe of discharging fume to realize the application integration of compound tuber pipe product.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. Prevent tuber pipe of discharging fume, its characterized in that, including body, flange and adiabatic gasket, the body includes the shell, the flange is fixed in the shell the flange with be provided with first fire-resistant sealing layer between the shell, the flange is located the tip of body, adiabatic gasket set up in the terminal surface of body, adiabatic gasket extends to the flange covers at least partly of flange.

2. The smoke exhaust prevention duct of claim 1, wherein said first layer of fire resistant sealant is fixedly attached to said housing, said first layer of fire resistant sealant covering at least a portion of said flange.

3. The smoke exhaust prevention ductwork of claim 1 wherein said tubular body further comprises an insulating refractory layer, said outer shell overlying said insulating refractory layer in a direction from within said tubular body to outside said tubular body.

4. The smoke evacuation prevention ductwork of claim 3, wherein the tubular body further comprises an inner shell, the insulating refractory layer overlying the inner shell in a direction from within the tubular body to outside the tubular body.

5. The smoke exhaust prevention ductwork of claim 4 wherein a second layer of fire resistant sealant is provided between the inner casing and the insulating fire resistant layer.

6. The smoke exhaust prevention ductwork of claim 4 wherein an antimicrobial coating is provided on the inside of the inner casing, the antimicrobial coating covering the inside of the inner casing.

7. The smoke exhaust prevention air duct according to claim 4, further comprising an angle iron angle bead located inside the inner casing, wherein the cross section of the angle iron angle bead is right-angled, the cross section of the duct body is square-shaped, and the angle iron angle bead is fixed at the right angle of the inner casing.

8. A smoke protection ductwork system comprising a smoke protection ductwork according to any of claims 1-7.

9. The smoke exhaust prevention duct system of claim 8 comprising at least two of said smoke exhaust prevention ducts, said insulating spacer being disposed between said flange of one of said smoke exhaust prevention ducts and said flange of another of said smoke exhaust prevention ducts.

10. The smoke exhaust prevention duct system of claim 9, wherein the flange of one of the two adjacent smoke exhaust prevention ducts is connected to the flange of the other smoke exhaust prevention duct by bolts that do not pass through the heat insulating spacer.