CN217736637U

CN217736637U - Nonmetal compensator

Info

Publication number: CN217736637U
Application number: CN202121705847.1U
Authority: CN
Inventors: 张迎军; 李楠; 张新喜; 陈刚; 吴宇; 朱守宏; 张现春
Original assignee: Guoneng Longyuan Environmental Protection Taizhou Co ltd; Guoneng Longyuan Environmental Protection Co Ltd
Current assignee: Guoneng Longyuan Environmental Protection Taizhou Co ltd; Guoneng Longyuan Environmental Protection Co Ltd
Priority date: 2021-07-26
Filing date: 2021-07-26
Publication date: 2022-11-04
Anticipated expiration: 2031-07-26

Abstract

The embodiment of the application discloses a non-metallic compensator, which relates to the technical field of compensators, and the technical scheme of the non-metallic compensator comprises a flue gas pipeline and a non-metallic compensator body arranged on the flue gas pipeline; the nonmetal compensator body comprises a skin layer and a protective layer, and the protective layer is attached to the inner side wall of the skin. The embodiment of the application is suitable for compensating the deformation of the pipeline formed by expansion with heat and contraction with cold of the flue.

Description

Nonmetal compensator

Technical Field

The application relates to the technical field of compensators. In particular to a non-metallic compensator.

Background

The nonmetal compensator is mainly used in a smoke and air pipeline system for conveying hot air containing dust and corrosive smoke, effectively absorbs the deformation of the pipeline caused by expansion with heat and contraction with cold of the smoke on the pipeline, absorbs displacement, reduces the deformation caused by expansion with heat and contraction with cold of the pipeline, ensures the normal operation of the pipeline, can meet the requirement of sealing performance, is used as an elastic compensation element capable of freely stretching, has the advantages of reliable work, good performance, compact structure and the like, and is widely applied to chemical, metallurgical, nuclear and other departments.

Conventional nonmetal compensator covering is mostly the glass fiber cloth stack and makes up and form, because glass fiber exists capillary infiltration problem, there is the seepage phenomenon in addition to make up the suture and the eye of the needle of covering, and has the installation sealed face roughness not enough after making up, and the clamp plate compresses tightly the not closely knit scheduling problem in back, even through using flexible pad skin and scribbling the structure and glue, also is difficult to improve the current situation.

And when the non-metal compensator is used for a flue gas discharge pipeline of a power plant boiler, the non-metal compensator is influenced by natural environment and corroded by media in the pipeline, so that the damage and leakage of a skin of the non-metal compensator are easily caused, the damage and leakage of the skin can pollute and corrode a peripheral steel structure, the civilized production image is influenced, and the maintenance workload and the production cost of personnel are increased.

Therefore, it is desirable to invent a novel non-metal compensator to solve the above problems.

SUMMERY OF THE UTILITY MODEL

In view of this, the embodiment of the present application provides a non-metallic compensator, which can solve the problem of leakage of a skin of a conventional non-metallic compensator.

The embodiment of the application provides a nonmetal compensator, which comprises a flue gas pipeline and a nonmetal compensator body arranged on the flue gas pipeline; the nonmetal compensator body comprises a skin layer and a protective layer, and the protective layer is attached to the inner side wall of the skin.

According to a specific implementation manner of the embodiment of the application, the protective layer comprises an ethylene propylene diene monomer layer.

According to a concrete implementation mode of this application embodiment, the EPT rubber layer with be provided with sealing glue layer between the skin layer, one of them side of sealing glue layer with the EPT rubber layer closely laminates, the other side of sealing glue layer with the skin layer closely laminates.

According to a concrete implementation mode of the embodiment of the application, the flue flange is arranged on the flue gas pipeline, and the nonmetal compensator body is fixedly connected with the flue flange.

According to a concrete implementation mode of the embodiment of the application, the flue flange further comprises a flange pressing plate, the skin layer and the ethylene propylene diene monomer rubber layer are arranged between the flue flange and the flange pressing plate and are fixed through a fastening piece.

According to a specific implementation mode of the embodiment of the application, one sides, close to each other, of the flue flange and the ethylene propylene diene monomer rubber layer are respectively coated with a sealant.

According to a specific implementation manner of the embodiment of the application, the mask layer and one side, close to each other, of the flange pressing plate are respectively coated with a sealant.

According to a specific implementation of the embodiment of the application, the fastener is a bolt.

According to a specific implementation manner of the embodiment of the application, the ethylene propylene diene monomer layer comprises a surface layer, a middle layer and a bottom layer, wherein a non-woven fabric reinforcing layer is arranged between the surface layer and the middle layer.

According to a specific implementation manner of the embodiment of the application, one side surface of the non-woven fabric reinforcing layer is provided with a raised grid-shaped convex line.

According to the nonmetal compensator provided by the embodiment of the application, the temperature-resistant and corrosion-resistant ethylene propylene diene monomer rubber layer is added on the inner side of the skin layer of the nonmetal compensator to serve as the first protective layer, reliable sealing is formed by good elasticity and a flange surface, and the problems of a joint surface of the nonmetal compensator and capillary water absorption and leakage of fibers are solved. The ethylene propylene diene monomer rubber in the embodiment of the application has the characteristics of excellent long-term heat resistance (the ethylene propylene diene monomer rubber can be used for a long time below 120 degrees), acid and alkali resistance, steam resistance and the like, is basically consistent with the environmental requirements of a tail flue, an outlet flue and an inlet flue of a boiler, and is an ideal choice when being used as a first protection layer and a sealing layer of a covering. Because ethylene propylene diene monomer lacks polarity and has low unsaturation degree, the ethylene propylene diene monomer has better resistance to various polar chemicals such as acid, alkali, oxidant, refrigerant, detergent, animal and vegetable oil, ketone, grease and the like. The corrosion of the corrosion slurry on the nonmetal compensator can be well controlled, so that leakage points are controlled, and the corrosion phenomenon of large-area metal parts is avoided.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic structural diagram of a non-metallic compensator according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of a skin layer and an epdm layer in the non-metallic compensator shown in fig. 1.

Detailed Description

The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

It should be understood that the embodiments described are only a few embodiments of the present application, and 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.

As shown in fig. 1 and fig. 2, the embodiment of the present application provides a non-metallic compensator, which may include a flue gas duct 1 and a non-metallic compensator body mounted on the flue gas duct 1; the nonmetal compensator body comprises a skin layer 2 and an protective layer, and the protective layer is attached to the inner side wall of the skin.

In one embodiment of this embodiment, the protective layer includes an epdm layer 3.

Ethylene propylene diene monomer: the Ethylene-Propylene rubber is a copolymer of Ethylene, propylene and a small amount of non-conjugated Diene, is one of Ethylene-Propylene rubbers, is represented by EPDM (Ethylene Propylene Diene Monomer), has excellent ozone resistance, heat resistance, aging resistance and other performances because a main chain of the Ethylene-Propylene rubber is composed of chemically stable saturated hydrocarbon and only contains unsaturated double bonds in side chains, is lack of polarity and has low unsaturation degree, and therefore has good resistance to various polar chemicals such as acid, alkali, oxidant, refrigerant, detergent, animal and vegetable oil, ketone, grease and the like.

In the embodiment, the ethylene propylene diene monomer rubber layer 3 is attached to the inner side wall of the skin layer 2 to serve as a first layer of protection, reliable sealing is formed between the good elasticity of the ethylene propylene diene monomer rubber and the surface of the flue flange 11, and the problems of skin joint surfaces of the nonmetal compensators and capillary water absorption and leakage of fibers are solved.

Compared with the skin used only in the prior art, the ethylene propylene diene monomer rubber in the embodiment of the application has the advantages of excellent long-term heat resistance (the rubber can be used for a long time below 120 degrees), acid and alkali resistance, steam resistance and the like, is basically consistent with the environmental requirements of the tail flue, the outlet flue and the inlet flue of a boiler, and is an ideal choice when being used as the first layer protection and sealing layer of the skin. Because the ethylene propylene diene monomer has low unsaturation degree and lacks polarity, the ethylene propylene diene monomer has better resistance to various polar chemicals such as acid, alkali, oxidant, refrigerant, detergent, animal and vegetable oil, ketone, grease and the like. The corrosion of the corrosion slurry on the nonmetal compensator can be well controlled, so that leakage points are controlled, and the corrosion phenomenon of large-area metal parts is avoided.

In an embodiment of this embodiment, a sealant layer is disposed between the epdm layer 3 and the skin layer 2, one side of the sealant layer is tightly attached to the epdm layer 3, and the other side of the sealant layer is tightly attached to the skin layer 2.

The sealant is a sealing material which deforms along with the shape of the sealing surface, is not easy to flow and has certain cohesiveness. Is an adhesive used to fill the configured gap for sealing purposes. Has the functions of leakage prevention, water prevention, vibration prevention, sound insulation, heat insulation and the like.

In the embodiment, the sealant is used as a bonding medium between the skin layer 2 and the ethylene propylene diene monomer layer 3, so that the operation is convenient, a good sealing effect can be achieved, a sealing surface between the skin and the ethylene propylene diene monomer can be more smooth, and the sealing effect and the anti-leakage effect are improved.

In an embodiment of this embodiment, a flue flange 11 is disposed on the flue gas duct 1, and the non-metal compensator body is fixedly connected to the flue flange 11. Through the mode that uses flange joint, not only can improve the intensity and the compact type of connecting, also convenient to detach maintenance.

In an embodiment of this embodiment, a flange pressing plate 4 may be further included, and the skin layer 2 and the epdm rubber layer 3 are disposed between the flue flange 11 and the flange pressing plate 4 and are fixed by a fastener. Optionally, the fastener is a bolt.

In order to further improve the sealing effect of each joint surface, in an embodiment of the present embodiment, a sealant is coated on the side where the flue flange 11 and the epdm rubber layer 3 are close to each other. Similarly, the side of the skin layer 2 close to the flange pressing plate 4 is coated with a sealant.

By coating the sealant, the bonding degree between the bonding surfaces is better, the sealing performance is improved, and the leakage phenomenon is further avoided.

In an embodiment of this embodiment, the epdm rubber layer 3 may include a surface layer, a middle layer and a bottom layer, wherein a non-woven fabric reinforcement layer is disposed between the surface layer and the middle layer.

In this embodiment, through the non-woven fabrics enhancement layer that sets up, can improve performances such as ductility, tensile strength on EPT rubber layer 3, make the inseparabler that combines between EPT rubber layer 3 and the flue flange 11, improve the leakproofness, prevent the seepage, can also prolong the life on EPT rubber layer 3 simultaneously.

In an embodiment of this embodiment, one side surface of the non-woven fabric reinforcing layer is provided with protruding grid-shaped convex lines. Through set up protruding latticed protruding lines on non-woven fabrics surface, can further improve intensity and anti tractive nature, can also strengthen the adhesion stress on non-woven fabrics and EPDM rubber top layer or intermediate level simultaneously, increase of service life.

Optionally, the raised grid-shaped convex lines may be disposed on one side of the non-woven fabric reinforcement layer close to the surface layer of the epdm rubber layer 3, may also be disposed on one side close to the middle layer, and may also be disposed on both sides, which is not specifically limited in this embodiment.

According to the nonmetal compensator provided by the embodiment of the application, the temperature-resistant and corrosion-resistant ethylene propylene diene monomer rubber layer 3 is added on the inner side of the nonmetal compensator skin layer 2 to serve as a first protective layer, reliable sealing is formed by good elasticity and a flange surface, and the problems of nonmetal compensator joint surfaces and fiber capillary water absorption and leakage are solved. The ethylene propylene diene monomer rubber in the embodiment of the application has the characteristics of excellent long-term heat resistance (the ethylene propylene diene monomer rubber can be used for a long time below 120 degrees), acid and alkali resistance, steam resistance and the like, is basically consistent with the environmental requirements of a tail flue, an outlet flue and an inlet flue of a boiler, and is an ideal choice when being used as a first protection layer and a sealing layer of a covering. Because ethylene propylene diene monomer lacks polarity and has low unsaturation degree, the ethylene propylene diene monomer has better resistance to various polar chemicals such as acid, alkali, oxidant, refrigerant, detergent, animal and vegetable oil, ketone, grease and the like. The corrosion of the corrosion slurry on the nonmetal compensator can be well controlled, so that leakage points are controlled, and the phenomenon of corrosion of large-area metal parts is avoided.

It should be noted that, in this document, the emphasis points of the solutions described in the embodiments are different, but there is a certain correlation between the embodiments, and in understanding the solution of the present application, the embodiments may be referred to each other; moreover, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A non-metallic compensator characterized by: the non-metal compensator comprises a flue gas pipeline (1) and a non-metal compensator body arranged on the flue gas pipeline (1);

the nonmetal compensator body comprises a skin layer (2) and a protective layer, and the protective layer is attached to the inner side wall of the skin.

2. A non-metallic compensator according to claim 1, wherein: the protective layer comprises an ethylene propylene diene monomer rubber layer (3).

3. A non-metallic compensator according to claim 2, wherein: the ethylene propylene diene monomer is characterized in that a sealing adhesive layer is arranged between the ethylene propylene diene monomer layer (3) and the skin layer (2), one side of the sealing adhesive layer is tightly attached to the ethylene propylene diene monomer layer (3), and the other side of the sealing adhesive layer is tightly attached to the skin layer (2).

4. A non-metallic compensator according to claim 3, wherein: a flue flange (11) is arranged on the flue gas pipeline (1), and the nonmetal compensator body is fixedly connected with the flue flange (11).

5. A non-metallic compensator according to claim 4, wherein: the flue flange is characterized by further comprising a flange pressing plate (4), wherein the skin layer (2) and the ethylene propylene diene monomer rubber layer (3) are arranged between the flue flange (11) and the flange pressing plate (4) and are fixed through fasteners.

6. A non-metallic compensator according to claim 4, wherein: and one sides of the flue flange (11) and the ethylene propylene diene monomer rubber layer (3) which are close to each other are respectively coated with a sealant.

7. A non-metallic compensator according to claim 5, wherein: and one sides of the skin layer (2) and the flange pressing plate (4) which are close to each other are respectively coated with a sealant.

8. A non-metallic compensator according to claim 7, wherein: the fastener is a bolt.

9. A non-metallic compensator according to claim 2, wherein: the ethylene propylene diene monomer rubber layer (3) comprises a surface layer, a middle layer and a bottom layer, wherein a non-woven fabric enhancement layer is arranged between the surface layer and the middle layer.

10. A non-metallic compensator according to claim 9, wherein: one side surface of the non-woven fabric reinforcing layer is provided with protruding grid-shaped convex lines.