阅读说明：本技术 一种风机的密封装置及方法 (Sealing device and method for fan ) 是由 曾令勇 邓受聪 邵小刚 于 2019-11-06 设计创作，主要内容包括：一种风机的密封装置包括：多个密封罩,其贴合于风机的碳封座,密封罩内部设置有正压介质容纳空间；多个密封固定件,其设置于密封罩的边缘；以及正压管路,其设置于密封罩上,且正压管路穿设于密封罩,本发明具有维护简单以及密封效果好的技术效果。(A sealing device of a fan includes: the sealing covers are attached to the carbon seal seats of the fans, and positive pressure medium accommodating spaces are formed in the sealing covers; a plurality of sealing fixing pieces arranged on the edge of the sealing cover; the positive pressure pipeline is arranged on the sealing cover and penetrates through the sealing cover.)

1. A sealing device of a fan, comprising:

the sealing covers are attached to the carbon seal seats of the fans, and positive pressure medium accommodating spaces are formed in the sealing covers;

a plurality of sealing fixtures disposed at an edge of the sealing cap; and

and the positive pressure pipeline is arranged on the sealing cover and penetrates through the sealing cover.

2. The fan seal of claim 1, wherein the seal housing comprises:

a transfer groove recessed in an outer edge of the sealing cap.

The cover body is arranged between the carbon seal seat and a bearing box of the fan; and

and the carbon seal close-fitting part is internally concave at one side of the sealing cover facing the carbon seal seat, and the carbon seal close-fitting part is installed on the carbon seal seat.

3. The fan seal assembly of claim 2, wherein the housing comprises:

the sealing shell is covered on the carbon sealing seat;

the fixing seats are arranged on the edge of the sealing shell in a protruding mode; and

and the fixing screw hole is arranged on the fixing seat.

4. The fan seal according to claim 1, wherein the positive pressure line comprises:

the air inlet is positioned at one end of the positive pressure pipeline facing the outside of the sealing cover; and

and the nitrogen conveying pipe is arranged on the sealing cover in a penetrating way.

5. The fan seal assembly of claim 4, wherein the air inlet comprises:

a nozzle fixing member disposed inside the air inlet; and

and the air valve is arranged on the end surface of the air inlet and is connected with the pipe orifice fixing piece.

6. A sealing method of a fan, comprising the sealing device of a fan according to claims 1 to 5, the sealing method of a fan comprising:

attaching a plurality of sealing covers to the carbon seal seat of the fan to form a positive pressure medium accommodating space inside the sealing covers;

utilizing a plurality of sealing fixing pieces which are arranged on the edges of the plurality of sealing covers in a penetrating way so as to connect and fix the sealing covers;

and injecting a positive pressure medium into the sealing cover by using a positive pressure pipeline so as to balance the internal and external air pressures of the positive pressure medium accommodating space.

7. The method for sealing a blower according to claim 6, wherein the step of forming a positive pressure medium accommodating space inside the sealing cap includes:

transferring the sealing cover to a preset mounting position by using a transfer groove;

a cover body is arranged between the carbon seal seat and a bearing box of the fan;

and installing a carbon seal clinging part on the carbon seal seat.

8. The method of sealing a blower of claim 7, wherein the step of installing a cover between the carbon block and the bearing housing of the blower comprises:

arranging a sealing shell on the carbon seal seat;

and moving the plurality of fixed seats on the sealing shell to align the fixed screw holes on the fixed seats.

9. The method for sealing a fan according to claim 6, wherein the step of injecting a positive pressure medium into the seal cover by using a positive pressure pipe to balance the internal and external air pressures of the positive pressure medium accommodating space comprises:

opening an air inlet, and installing an inflation pipeline at the air inlet;

and inputting a positive pressure medium into the sealing cover by using a nitrogen conveying pipe.

10. The method of claim 9, wherein the opening of the air inlet and the installing of the air charging line at the air inlet comprise:

fixing the inflation pipeline on the inner side of the air inlet by using a pipe orifice fixing piece;

and opening the air valve to conduct the nitrogen conveying pipe.

Technical Field

The invention relates to the technical field of equipment sealing, in particular to a sealing device and a sealing method for a fan.

Background

In recent years, with the rapid development of metallurgical manufacturing and related equipment technologies, along with the continuous replacement and optimization of metallurgical industry by metallurgical market environment, the design technologies of metallurgical processes, metallurgical equipment and processing equipment are continuously updated, the requirements on the metallurgical technologies, the process requirements, the quality of metallurgical finished products and the like in the construction process are also improved, and the sealing of a fan is a difficult problem which needs to be overcome urgently. In the prior art, airflow vortexes can be formed in small area ranges inside and outside a carbon seal of a fan, and due to the structural characteristics of the fan, a distance between the carbon seal seat and a bearing box is always exposed to the atmospheric environment, so that air backflow is easy to occur after the fan runs for a period of time, the oxygen content in a furnace is increased, and strip steel oxidation is generated.

In conclusion, the fan sealing technology in the prior art has the technical defects of low maintenance efficiency and poor sealing effect.

Disclosure of Invention

In view of the above disadvantages of the prior art, an object of the present invention is to provide a sealing device and method for a blower, which are used to solve the technical defects of low maintenance efficiency and poor sealing effect in the prior art.

To achieve the above and other related objects, the present invention provides a sealing device for a blower, comprising: the sealing covers are attached to the carbon seal seats of the fans, and positive pressure medium accommodating spaces are formed in the sealing covers; a plurality of sealing fixing pieces arranged on the edge of the sealing cover; and the positive pressure pipeline is arranged on the sealing cover and penetrates through the sealing cover.

In one embodiment of the present invention, a sealing cap includes: the transfer groove is recessed in the outer side edge of the sealing cover; the cover body is arranged between the carbon seal seat and a bearing box of the fan; and the carbon seal clinging part is internally concave at one side of the sealing cover facing the carbon seal seat, and the carbon seal clinging part is arranged on the carbon seal seat.

In one embodiment of the present invention, the cover includes: the sealing shell is covered on the carbon sealing seat; a plurality of fixing seats which are arranged at the edge of the sealing shell in a protruding way; and the fixing screw hole is arranged on the fixing seat.

In one embodiment of the present invention, a positive pressure pipeline includes: the air inlet is positioned at one end of the positive pressure pipeline facing the outside of the sealing cover; and the nitrogen conveying pipe penetrates through the sealing cover.

In one embodiment of the present invention, the air inlet includes: a pipe orifice fixing member disposed inside the air inlet; and the air valve is arranged on the end surface of the air inlet and is connected with the pipe orifice fixing piece.

In an embodiment of the present invention, a sealing method for a fan includes: a plurality of sealing covers are attached to the carbon seal seat of the fan, so that a positive pressure medium accommodating space is formed inside the sealing covers; utilizing a plurality of sealing fixing pieces which are arranged on the edges of the plurality of sealing covers in a penetrating way so as to connect and fix the sealing covers; and positive pressure medium is injected into the sealing cover by utilizing the positive pressure pipeline so as to balance the internal and external air pressure of the positive pressure medium accommodating space.

In an embodiment of the present invention, the step of forming a positive pressure medium accommodating space inside the sealing cover includes: transferring the sealing cover to a preset mounting position by using a transfer groove; a cover body is arranged between the carbon seal seat and a bearing box of the fan; and mounting the carbon seal close-fitting part on the carbon seal seat.

In one embodiment of the present invention, the step of installing the cover between the carbon seal holder and the bearing housing of the fan includes: arranging a sealing shell cover on the carbon sealing seat; and moving the plurality of fixing seats on the sealing shell to align the fixing screw holes on the fixing seats.

In one embodiment of the present invention, the step of injecting a positive pressure medium into the seal cover by using a positive pressure pipe to balance the internal and external air pressures of the positive pressure medium accommodating space includes: opening an air inlet, and installing an inflation pipeline at the air inlet; and a nitrogen conveying pipe is used for conveying a positive pressure medium into the sealing cover.

In one embodiment of the present invention, opening an air inlet and installing an inflation pipeline at the air inlet includes: fixing the gas charging pipeline on the inner side of the gas inlet by using the pipe orifice fixing piece; the air valve is opened to conduct the nitrogen conveying pipe.

As described above, the sealing device and method for a fan provided by the invention have the following beneficial effects:

the sealing device and the sealing method of the fan improve the sealing efficiency of the fan, are simple to manufacture, low in cost, low in personnel requirement and short in maintenance time, avoid the situation that a distance between the carbon seal seat and the bearing box is always exposed to the atmospheric environment, avoid the situation that the fan is easy to have air backflow after running for a period of time, prevent the oxygen content in the furnace from rising, avoid the oxidation of strip steel and improve the use reliability and safety of the fan.

Meanwhile, the working hours occupied by maintenance operation of the fan are saved, a large amount of manpower is saved, the re-optimization of resource allocation is facilitated, and the overall efficiency of metallurgical processing is improved.

Drawings

Fig. 1 is a schematic structural diagram of a sealing device of a fan according to the present invention.

FIG. 2 is a schematic diagram of the positive pressure line 3 of FIG. 1 in one embodiment.

Fig. 3 is a flow chart illustrating a sealing method of a fan according to the present invention.

Fig. 4 is a flowchart illustrating a specific flow of step S1 in fig. 1 according to an embodiment.

Fig. 5 is a flowchart illustrating a specific flow of step S12 in fig. 4 according to an embodiment.

Fig. 6 is a flowchart illustrating a specific flow of step S3 in fig. 3 according to an embodiment.

Fig. 7 is a flowchart illustrating a specific flow of step S31 in fig. 6 according to an embodiment.

Description of the element reference numerals

1 sealing cover

2 sealing fastener

3 positive pressure pipeline

11 transfer tank

12 cover body

13 carbon seal clinging part

31 air inlet

32 nitrogen conveying pipe

121 sealed shell

122 fixed seat

123 fixing screw hole

311 pipe orifice fixing piece

312 air valve

Description of step designations

FIGS. 3S 1-S3

FIGS. 4S 11-S13

FIGS. 5S 121 to S122

FIGS. 6S 31-S32

FIGS. 7S 321 to S322

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

Please refer to fig. 1 to 7. It should be understood that the structures shown in the drawings and described herein are only for the purpose of illustration and description, and are not intended to limit the scope of the invention, which is defined by the claims, so that the present invention is not limited thereto. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a sealing device of a fan according to the present invention, as shown in fig. 1, the sealing device of a fan includes a plurality of sealing caps 1, a plurality of sealing fixtures 2, and a positive pressure pipeline 3, the plurality of sealing caps 1 are attached to a carbon seal seat of the fan, and a positive pressure medium accommodating space is disposed inside the sealing caps 1, in an embodiment, an operation parameter of the fan, such as a fast cooling fan, includes but is not limited to: fan flow, fan motor speed, fan power, body static pressure, and body medium temperature, etc., in one embodiment, the fan may be used to transport medium such as but not limited to nitrogen-hydrogen mixture gas, etc. A plurality of sealing fixtures 2 disposed at the edge of the sealing cover 1, wherein in an embodiment, the total loading of a fan, such as a cold rolling continuous annealing furnace section fan, is adapted to the equipment in the cold rolling process line, which in an embodiment may include but is not limited to: preheating section equipment, combustion fan, smoke exhaust fan, at least one slow cooling equipment, fast cooling equipment, final cooling equipment, water quenching equipment and the like. And the positive pressure pipeline 3 is arranged on the sealing cover 1, and the positive pressure pipeline 3 penetrates through the sealing cover 1, in one embodiment, a scheme for sealing the carbon seal of the fan by the sealing cover 1 and specific specifications of the sealing cover 1, such as size, thickness and arrangement of the positive pressure pipeline 3, can be set through detection of parameters of specific structures of the fan equipment, such as size and static pressure, and various parameters in operation record information of the fan equipment.

Referring to fig. 1, in an embodiment, the sealing enclosure 1 includes a transfer trough 11, a cover body 12 and a carbon seal close portion 13, the transfer trough 11 is recessed from an outer edge of the sealing enclosure 1, in an embodiment, a transfer tool for transferring a sealing device of a fan, such as a lifting sling, may be modified, and in this embodiment, design and manufacture of the transfer sling and the transfer trough 11 and formulation of a modification scheme may be performed according to data, such as an installation height of the transfer trough 11, specifications of fan equipment, such as size and size, and the like. In an embodiment, the transfer spreader may include, but is not limited to, for example: lifting hooks, lifting rings, lifting suckers, clamps, lifting beams and the like. The spreader assembly, such as the lifting chucks, clamps and lifting beams, can be used permanently on the crane as a dedicated spreader, or can be used temporarily, for example, as a replaceable auxiliary spreader suspended from a hook, in one embodiment, the transfer spreader is adapted to the specifications of the transfer chute 11. In one embodiment, the transfer chute 11 may be fixedly attached to the transfer chute by, for example, a rope, hook, or magnetic suction cup. The cover body 12 is installed between the carbon seal seat and the bearing box of the blower, and in one embodiment, the carbon seal seat is isolated from the outside air by a sealing cover, such as the cover body 12, so as to prevent the part between the carbon seal seat and the bearing box from being exposed to the atmosphere, and prevent air backflow, strip steel oxidation and the like. And a carbon seal close contact part 13 which is recessed in the side of the seal cover 1 facing the carbon seal seat, wherein the carbon seal close contact part 13 is mounted on the carbon seal seat, in an embodiment, the structure of the carbon ring seal may include, but is not limited to, for example, an annular seal cavity and a carbon seal close contact part 13, such as an annular bushing, in an embodiment, an annular groove may be provided in the seal cavity, in this embodiment, at least one annular graphite seal ring with a rectangular cross section may be mounted in the groove.

Referring to fig. 1, in an embodiment, the cover 12 includes a sealing shell 121, a plurality of fixing bases 122 and fixing screw holes 123, and the sealing shell 121 is covered on a carbon seal base. And a plurality of fixing seats 122 which are protrudingly disposed at the edge of the sealing case 121. And a fixing screw hole 123 provided on the fixing base 122, in one embodiment, a fixing member of a predetermined specification such as a bolt, a nut, etc. may be used to fix the sealing cover, and in one embodiment, a sealing member of the blower such as a carbon ring seal of the sealing shell 121 may be applied to, for example, a one-piece or a partial application device: steam turbine, fan, generator, compressor, turbine etc. unit. Application position: shaft end sealing application field: petroleum, chemical, petrochemical, metallurgical, etc.

Referring to fig. 2, which is a schematic structural diagram of the positive pressure pipeline 3 in fig. 1 in an embodiment, as shown in fig. 2, the positive pressure pipeline 3 includes an air inlet 31 and a nitrogen conveying pipe 32, and the air inlet 31 is located at an end of the positive pressure pipeline 3 facing the outside of the hermetic enclosure 1. And a nitrogen pipe 32 penetrating the sealing cover 1, in one embodiment, for example, a nitrogen pipe 3 may be disposed at positions such as the upper and lower ends of the sealing cover 1, in this embodiment, the nitrogen pipe 3 is adapted to a gas transmission port of a nitrogen gas storage device such as a nitrogen tank, and a medium for positive pressure such as inert gas such as nitrogen is input into the accommodating space formed by the sealing cover 1 through the nitrogen pipe 32, so that an oxygen-free and positive pressure environment is formed in the sealing cover 1 to isolate air from entering.

Referring to fig. 2, in an embodiment, the gas inlet 31 includes a nozzle fixing member 311 and a gas valve 312, the nozzle fixing member 311 is disposed inside the gas inlet 31, in an embodiment, carbon ring sealing sometimes needs to add an isolation gas, usually nitrogen gas is used, and the consumption of nitrogen gas can be controlled within a predetermined interval, and can be applied to seal flammable and toxic media. And an air valve 312 installed on an end surface of the air inlet 31, the air valve 312 being connected to the nozzle fixing member 311, in an embodiment, a gap of, for example, 0.01 to 0.04mm may be provided between an inner diameter of, for example, a graphite sealing ring inside the sealing cover 1 and the annular shaft sleeve.

Referring to fig. 3, fig. 3 is a schematic flow chart illustrating a sealing method of a fan according to the present invention, as shown in fig. 3, the sealing method of a fan includes, S1, attaching a plurality of sealing caps to a carbon block of the fan to form a positive pressure medium accommodating space inside the sealing caps, in an embodiment, the operating parameters of the fan, such as a cooling fan, include but are not limited to: fan flow, fan motor speed, fan power, body static pressure, and body medium temperature, etc., in one embodiment, the fan may be used to transport medium such as but not limited to nitrogen-hydrogen mixture gas, etc. S2, utilizing a plurality of sealing fasteners penetrating the edges of the plurality of sealing caps to fasten the sealing caps, wherein in one embodiment, the total loading of a fan, such as a cold rolling continuous annealing furnace fan, is adapted to the equipment in the cold rolling process line, and in one embodiment, the cold rolling process line may include but is not limited to: preheating section equipment, combustion fan, smoke exhaust fan, at least one slow cooling equipment, fast cooling equipment, final cooling equipment, water quenching equipment and the like. S3, injecting a positive pressure medium into the sealing cover by using the positive pressure pipeline to balance the internal and external air pressures of the positive pressure medium accommodating space, in an embodiment, the scheme of sealing the carbon seal of the fan by the sealing cover 1 and the specific specification of the sealing cover 1, such as the size, the thickness, and the setting of the positive pressure pipeline 3, can be set by detecting the specific structure of the fan device, such as the size, the static pressure, and other parameters, and various parameters in the operation record information of the fan device.

Referring to fig. 4, fig. 4 is a schematic diagram illustrating a specific flow process of step S1 in fig. 1 in an embodiment, and as shown in fig. 4, step S1 of forming a positive pressure medium accommodating space inside the enclosure includes S11, and transferring the enclosure to a preset installation position by using a transfer chute, in an embodiment, a transfer tool, such as a lifting sling, for transferring a sealing device of a fan may be modified, in this embodiment, the design and manufacture of the transfer sling and the transfer chute 11 and the establishment of the modification scheme may be performed according to data, such as an installation height of the transfer chute 11, specifications of the fan equipment, such as size and dimension, and in an embodiment, the transfer sling may include, but is not limited to: lifting hooks, lifting rings, lifting suckers, clamps, lifting beams and the like. The spreader assembly, such as the lifting chucks, clamps and lifting beams, can be used permanently on the crane as a dedicated spreader, or can be used temporarily, for example, as a replaceable auxiliary spreader suspended from a hook, in one embodiment, the transfer spreader is adapted to the specifications of the transfer chute 11. In one embodiment, the transfer chute 11 may be fixedly attached to the transfer chute by, for example, a rope, hook, or magnetic suction cup. S12, installing a cover between the carbon seal holder and the bearing housing of the blower, in one embodiment, the carbon seal holder can be isolated from the outside air by a sealing cover, such as the cover 12, to prevent the portion between the carbon seal holder and the bearing housing from being exposed to the atmosphere, and to prevent the air from flowing backwards and the strip steel from being oxidized. S13, mounting the carbon seal abutting part on the carbon seal seat, in an embodiment, the structure of the carbon ring seal may include, but is not limited to, for example, an annular seal cavity and the carbon seal abutting part 13, for example, an annular bushing, etc., in an embodiment, an annular groove may be provided in the seal cavity, and in this embodiment, not less than one annular graphite seal ring with a rectangular cross section may be mounted in the groove.

Referring to fig. 5, fig. 5 is a schematic diagram illustrating a specific flow of step S12 in fig. 4 in an embodiment, and as shown in fig. 4, the step S12 of installing a cover between the carbon seal seat and the bearing housing of the fan includes S121 of covering the carbon seal seat with a sealing shell, in an embodiment, the sealing shell 121 may be made, for example, two semicircular sealing shells, and two sides of the sealing shell may be attached to the carbon seal of the fan. S122, moving the plurality of fixing seats on the sealing shell to align with the fixing screw holes on the fixing seats, in an embodiment, fixing the sealing cover by penetrating through the fixing parts with preset specifications, such as bolts, nuts, etc., in an embodiment, the carbon ring sealing of the sealing member of the blower, such as the sealing shell 121, can be applied to, for example, integral and partial application devices: steam turbine, fan, generator, compressor, turbine etc. unit. Application position: shaft end sealing application field: petroleum, chemical, petrochemical, metallurgy and other fields.

Referring to fig. 6, fig. 6 is a schematic diagram illustrating a specific flow of step S3 in fig. 3 according to an embodiment, and as shown in fig. 6, the step S3 of injecting a positive pressure medium into the sealing cover by using a positive pressure pipe to balance the internal and external air pressures of the positive pressure medium accommodating space includes S31, opening an air inlet, and installing an air charging pipe at the air inlet. S32, using a nitrogen pipe to input the positive pressure medium into the sealed cover, in one embodiment, for example, a nitrogen pipe 3 can be set at the upper and lower ends of the sealed cover 1, in this embodiment, the nitrogen pipe 3 is matched with the gas transmission port of the nitrogen gas storage device, for example, a nitrogen tank, and by inputting the medium for positive pressure, for example, inert gas such as nitrogen, into the containing space formed by the sealed cover 1 through the nitrogen pipe 32, an oxygen-free and positive pressure environment is formed in the sealed cover 1 to isolate the air from entering.

Referring to fig. 7, fig. 7 is a schematic diagram illustrating a specific flow of step S31 in fig. 6, in an embodiment, as shown in fig. 7, the step S32 of opening the air inlet and installing the air charging pipe at the air inlet includes S321 of fixing the air charging pipe at the inner side of the air inlet by using a pipe orifice fixing member. S322, opening the gas valve to conduct the nitrogen pipe, in an embodiment, a gap of, for example, 0.01 to 0.04mm may be provided between an inner diameter of, for example, the graphite sealing ring inside the sealing cover 1 and the annular shaft sleeve, in this embodiment, an outer surface of the shaft sleeve may be coated with, for example, a wear-resistant layer, in this embodiment, the coating material may be, but is not limited to, aluminum oxide or chromium oxide, for example.

As used in the description herein and throughout the claims that follow, "a", "an", and "the" include plural references unless otherwise indicated. Also, as used in the description herein and throughout the claims that follow, unless otherwise indicated, the meaning of "in …" includes "in …" and "on … (on)".

The above description of illustrated embodiments of the invention, including what is described in the abstract of the specification, is not intended to be exhaustive or to limit the invention to the precise forms disclosed herein. While specific embodiments of, and examples for, the invention are described herein for illustrative purposes only, various equivalent modifications are possible within the spirit and scope of the present invention, as those skilled in the relevant art will recognize and appreciate. As indicated, these modifications may be made to the present invention in light of the foregoing description of illustrated embodiments of the present invention and are to be included within the spirit and scope of the present invention.

The sealing device and the sealing method of the fan improve the sealing efficiency of the fan, are simple to manufacture, low in cost, low in personnel requirement and short in maintenance time, avoid the situation that a distance between the carbon seal seat and the bearing box is always exposed to the atmospheric environment, avoid the situation that the fan is easy to have air backflow after running for a period of time, prevent the oxygen content in the furnace from rising, avoid the oxidation of strip steel and improve the use reliability and safety of the fan.

Meanwhile, the sealing device of the fan saves the working hours occupied by maintenance operation of the fan, saves a large amount of manpower, is beneficial to re-optimization of resource allocation, and improves the overall efficiency of metallurgical processing.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.