CN115786616A - Hot blast pipe structure - Google Patents

Abstract

The invention discloses a hot air pipe structure, belongs to the technical field of hot air furnaces, and solves the technical problem that the sealing performance of an existing hot air pipe is reduced due to the fact that the existing hot air pipe is easily affected by hot air. The hot-blast main structure includes the standpipe of vertical setting and the horizontal pipe of level setting, and the horizontal pipe sets up in the middle part of standpipe, is provided with compensator and hot-blast valve on the horizontal pipe, and the compensator sets up between hot-blast valve and vertical pipeline. This application can reduce the not hard up or the possibility of slotting of body of hot-blast main structure, improves hot-blast main's sealing performance.

Description

Hot-blast pipe structure

Technical Field

The invention belongs to the technical field of hot blast stoves, and particularly relates to a hot blast pipe structure.

Background

The blast furnace ironmaking process in the iron and steel industry needs to use a hot blast stove which mainly functions to provide high-temperature hot air for the blast furnace. There is the difference in height between blast furnace and the hot-blast furnace, because the space restriction in operation place, the operation personnel adopt the standpipe to connect the hot-blast main that has the difference in height between blast furnace and the hot-blast furnace more, the standpipe position can be according to the place arrangement condition setting between the hot-blast surrounding pipe of hot-blast furnace hot air exitus and blast furnace, but because the hot-blast temperature of the intraductal transport of hot-blast air is more than reaching 1000 degrees centigrade, the hot-blast main expands after being heated, the structural stability variation, the fork, the position such as compensator easily appears falling changeing, the crack, overheated scheduling problem, and then lead to the sealing performance decline of hot-blast main body, influence the pipeline safety and carry the high wind temperature.

Disclosure of Invention

This application aims at solving current hot-blast main and is easily received hot-blast influence to a certain extent at least and leads to the technical problem that hot-blast main's sealing performance descends, for this reason, this application provides a hot-blast main structure.

The technical scheme of the application is as follows:

a hot air pipe structure comprises a vertical pipe and a horizontal pipe, wherein the vertical pipe is vertically arranged, the horizontal pipe is horizontally arranged, the horizontal pipe is arranged in the middle of the vertical pipe, a compensator and a hot air valve are arranged on the horizontal pipe, and the compensator is arranged between the hot air valve and a vertical pipeline.

In some embodiments, a support is disposed between the bottom end of the vertical pipe and the ground, the support includes a bottom plate and a top plate disposed above the bottom plate, the bottom plate is fixedly connected to the ground, the top plate is fixedly connected to the bottom end of the vertical pipe, and a plurality of support assemblies are spaced between the bottom plate and the top plate to enable the top plate to move back and forth along the axial direction of the vertical pipe compared to the bottom plate.

In some embodiments, the support assembly includes a first sleeve, a second sleeve, and a compression spring, a top end of the first sleeve is fixedly connected to a bottom surface of the top plate, the second sleeve is fixedly connected to a top surface of the bottom plate, the second sleeve is sleeved in the first sleeve, one end of the compression spring is located in the first sleeve, and the other end of the compression spring is located in the second sleeve.

In some embodiments, the supporting component further comprises a limiting part, the limiting part comprises a first limiting plate, a second limiting plate and at least one limiting rod, the first limiting plate is fixedly arranged on the outer wall of the first sleeve, the second limiting plate is fixedly arranged on the outer wall of the second sleeve, at least one set of one-to-one through holes are formed in the first limiting plate and the second limiting plate respectively, the axis of the limiting rod is parallel to the axis of the vertical cylinder, the limiting rod penetrates through the through holes of the first limiting plate and the through holes of the second limiting plate, plugs are arranged at two ends of the limiting rod, and the first limiting plate and the second limiting plate are located between the plugs.

In some embodiments, the two ends of the limiting rod are provided with external threads, and the plug is a nut.

In some embodiments, the through hole has an inner diameter equal to the diameter of the stopper rod.

In some embodiments, the first and second limiting plates are both annular, the first limiting plate is disposed coaxially with the first sleeve, and the second limiting plate is disposed coaxially with the second sleeve.

In some embodiments, the support includes at least five support assemblies, one of the support assemblies being disposed coaxially with the base plate, the remaining support assemblies being equally spaced about the axis of the base plate.

In some embodiments, the bottom plate includes a first plate and a second plate arranged in parallel, and a sliding pair is disposed between the first plate and the second plate.

In some embodiments, a manhole is disposed on the standpipe, the manhole being disposed above the level pipe.

The embodiment of the application has at least the following beneficial effects:

according to the technical scheme, the hot blast pipe structure disclosed in the application is communicated with the compensator to absorb the transverse displacement of the horizontal pipe, and the compensator is arranged between the hot blast valve and the vertical pipeline, the hot blast valve is connected with the air inlet of the blast furnace, the transverse displacement is absorbed by the compensator, the possibility of the displacement of the hot blast valve is low, even if the displacement occurs, the displacement amplitude of the hot blast valve is smaller, the failure rate of the hot blast valve is reduced, the possibility of looseness or slotting of the pipe body at the position of the hot blast valve installed on the horizontal pipe is correspondingly reduced, and the sealing performance of the hot blast pipe is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 shows a schematic structural diagram of a hot blast duct structure in an embodiment of the present application;

FIG. 2 shows a schematic structural view of the support assembly of FIG. 1;

FIG. 3 shows a schematic structural diagram of a further hot blast duct structure in an embodiment of the present application;

the labels in the figure are: the device comprises a hot blast stove 1, a hot blast stove 2, a vertical pipe 3, a horizontal pipe 4, a compensator 5, a hot blast valve 6, a support 61, a top plate 621, a first plate 622, a second plate 623, a sliding pair 631, a first sleeve 631, a second sleeve 632, a compression spring 633, a first limiting plate 641, a second limiting plate 642, a 643 limiting rod 643, a nut 644, a 7-manhole and a support frame 8.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

FIG. 1 shows a schematic structural diagram of a hot blast duct structure in an embodiment of the present application; FIG. 2 shows a schematic structural view of the support assembly of FIG. 1; fig. 3 shows a schematic structural diagram of a further hot blast pipe structure in an embodiment of the present application.

The application is described below with reference to specific embodiments in conjunction with the following drawings:

as shown in fig. 1, fig. 2 and fig. 3, the present embodiment provides a hot-blast main structure, which includes a vertical pipe 2 and a horizontal pipe 3, the top end of the vertical pipe 2 is generally provided with an elbow, the elbow connects the vertical pipe 2 with the air outlet of the hot-blast stove 1, the stability of the vertical pipe 2 is promoted in future, the horizontal pipe 3 is arranged in the middle of the vertical pipe 2, the horizontal pipe 3 is provided with a compensator 4 and a hot-blast valve 5, and the compensator 4 is arranged between the hot-blast valve 5 and the vertical pipe. In this embodiment, the compensator 4 is a compound compensator, the compound compensator is parallel to the axial direction of the horizontal pipe 3, the compound compensator comprises two corrugated pipes, the absorption effect on the lateral displacement of the horizontal pipe 3 is good, the compensator 4 is arranged between the hot blast valve 5 and the vertical pipeline, the hot blast valve 5 is connected with the air inlet of the blast furnace, so that the possibility of the displacement of the hot blast valve 5 is low through the absorption of the compensator 4 on the lateral displacement, even if the displacement occurs, the displacement amplitude of the hot blast valve 5 is small, the failure rate of the hot blast valve 5 is reduced, the possibility of the looseness or the crack of the pipe body at the position where the hot blast valve 5 is installed on the horizontal pipe 3 is correspondingly reduced, and the sealing performance of the hot blast pipe is improved.

Considering that the influence of hot air on the hot air duct 3 includes not only the thermal expansion of the partial structure of the hot air duct structure, but also the vibration of the duct body caused by the flow of hot air in the hot air duct 3, therefore, referring to fig. 1 and 2, in this embodiment, a support 6 is disposed between the bottom end of the vertical duct 2 and the ground, the support 6 includes a bottom plate and a top plate 61 disposed above the bottom plate, the bottom plate is fixedly connected to the ground, the top plate 61 is fixedly connected to the bottom end of the vertical duct 2, a plurality of support assemblies are disposed between the bottom plate and the top plate 61 at intervals so that the top plate 61 can move along the axial direction of the vertical duct 2 in comparison with the bottom plate, that is, the axial displacement of the vertical duct 2 is absorbed by the support 6, and then the vertical displacement of the horizontal duct 3 is reduced, and further the sealing performance of the hot air duct in the using process is improved.

The supporting component may be a bellows, but considering that the supporting capability of the bellows is low, referring to fig. 2, in this embodiment, the supporting component includes a first sleeve 631, a second sleeve 632, and a compression spring 633, a top end of the first sleeve 631 is fixedly connected to the bottom surface of the top plate 61, the second sleeve 632 is fixedly connected to the top surface of the bottom plate, the second sleeve 632 is sleeved in the first sleeve 631, one end of the compression spring 633 is located in the first sleeve 631, and the other end of the compression spring 633 is located in the second sleeve 632. The axes of the first sleeve 631 and the second sleeve 632 are parallel to the axial direction of the standpipe 2, and the inner diameter of the first sleeve 631 is equal to or slightly larger than the outer diameter of the second sleeve 632, so that the first sleeve 631 swings slightly when lifting compared with the second sleeve 632, thereby reducing the horizontal displacement of the standpipe 2 and the pressure of the compensator 4.

The support assembly further includes a limiting member, so as to limit the range of the sleeve moving relative to the first sleeve 631, and avoid the first sleeve 631 and the second sleeve 632 from separating, referring to fig. 2, the limiting member includes a first limiting plate 641, a second limiting plate 642 and at least one limiting rod 643, the first limiting plate 641 is fixedly disposed on the outer wall of the first sleeve 631, the second limiting plate 642 is fixedly disposed on the outer wall of the second sleeve 632, at least one set of through holes corresponding to one another are respectively disposed on the first limiting plate 641 and the second limiting plate 642, the axis of the limiting rod 643 is parallel to the axis of the vertical cylinder, the limiting rod 643 is disposed in the through hole of the corresponding first limiting plate 641 and the through hole of the second limiting plate 642, both ends of the limiting rod 643 are provided with plugs, and the first limiting plate 641 and the second limiting plate 642 are located between the two plugs. In order to ensure the relative movement between the first sleeve 631 and the second sleeve 632, the first sleeve 631 and the second sleeve 632 have an overlapping portion in the axial direction, so that the supporting component limits the top plate 61 and the bottom plate, and the vertical cylinder can be stably arranged on the support 6. There is a gap between the first limiting plate 641 and the second limiting plate 642, and the distance between the two plugs is greater than the distance between the first limiting plate 641 and the second limiting plate 642, so as to ensure that there is enough moving space between the first sleeve 631 and the second sleeve 632 to absorb the axial displacement of the standpipe 2. Furthermore, external threads are arranged at two ends of the limiting rod 643, the plug is a nut 644, it can be understood that the nut 644 is in threaded connection with the external threads, the distance between the two nuts 644 can be adjusted by adjusting the nut 644, the displacement of the vertical direction of the vertical pipe 2 can be conveniently adjusted and absorbed by an operator according to needs, and the disassembly, assembly and maintenance of the operator are convenient.

Further, the inner diameter of the through hole is equal to or slightly larger than the diameter of the position-limiting rod 643, so that the cooperation of the through hole and the position-limiting rod 643 can also limit the top plate 61 and the bottom plate, and the stability of the support 6 is further ensured. Furthermore, the first limiting plate 641 and the second limiting plate 642 are both circular, the first limiting plate 641 and the first sleeve 631 are coaxially arranged, the second limiting plate 642 and the second sleeve 632 are coaxially arranged, the first limiting plate 641 is welded on the outer wall of the first sleeve 631 so as to increase the tightness between the first limiting plate 641 and the first sleeve 631, and the second limiting plate 642 is welded on the outer wall of the second sleeve 632 so as to increase the tightness between the second limiting plate 642 and the second sleeve 632, thereby improving the safety performance during operation.

The support 6 includes five at least supporting components, a supporting component and the coaxial setting of bottom plate, and all the other supporting components set up around the axis of bottom plate equidistant, reduces the pressure that single supporting component bore through setting up a plurality of supporting components, and then promotes the stability of support 6, guarantees that support 6 is to 2 axial displacement's of standpipe effective absorption in long-time activity duration.

Referring to fig. 1 to 3, the bottom plate includes a first plate 621 and a second plate 622 that are arranged in parallel, a sliding pair 623 is arranged between the first plate 621 and the second plate 622, the sliding pair 623 is a planar sliding pair, the first plate 621 and the second plate 622 can move relatively through the planar sliding pair, the support 6 is disposed on the ground or disposed on the erected support frame 8, and the top surface of the support 6 is horizontal to ensure stable support of the vertical pipe 2, therefore, in this embodiment, the planar sliding pair will absorb displacement of the vertical pipe 2 in the radial direction thereof, so it can be understood that, through the support assembly and the sliding pair 623, the axial displacement and the radial displacement of the vertical pipe 2 can be absorbed, the influence of the vertical pipe 2 on the hot air pipe after thermal expansion is reduced, the stability of the hot air pipe 3 is maintained, the shake of the horizontal pipe 3 fixedly connected with the vertical pipe 2 can be reduced, that the shake of the horizontal pipe 3 through the seat body and the compensator 4 disposed between the hot air valve 5 and the vertical pipe can be greatly reduced, the influence of the horizontal pipe 3 on the hot air pipe 3 can be greatly reduced, the shake of the hot air pipe 5 relative to reduce the hot air furnace, and improve the hot air sealing efficiency of the hot air valve 5 for a long time.

Referring to fig. 1 and 3, be provided with manhole 7 on the standpipe 2, manhole 7 sets up near horizontal pipe 3, be located horizontal pipe 3's top or below promptly, so that the operating personnel overhauls standpipe 2 and horizontal pipe 3, compare in opening manhole 7 on horizontal pipe 3, spare part on the reducible horizontal pipe 3 of this embodiment, arouse the vibration of the door body of installation on manhole 7 and then drive horizontal pipe 3's vibration and displacement and the circumstances that is heated the wind inflation when avoiding the air current to flow, reduce the not hard up or slotted possibility of body of hot-blast main 5 department, the sealing performance of hot-blast main has been improved.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise" indicate orientations or positional relationships based on the orientation or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be considered as limiting the present application.

It should be noted that all the directional indications in the embodiments of the present application are only used for explaining the relative position relationship, the motion condition, and the like between the components in a certain posture, and if the certain posture is changed, the directional indication is changed correspondingly.

In this application, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly, and thus, for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.

Furthermore, descriptions in this application as to "first," "second," etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: numerous changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A hot blast pipe structure is characterized by comprising a vertical pipe and a horizontal pipe, wherein the vertical pipe is vertically arranged, the horizontal pipe is horizontally arranged, the horizontal pipe is arranged in the middle of the vertical pipe, a compensator and a hot blast valve are arranged on the horizontal pipe, and the compensator is arranged between the hot blast valve and a vertical pipeline.

2. The hot blast pipe structure according to claim 1, wherein a support is disposed between the bottom end of the vertical pipe and the ground, the support comprises a bottom plate and a top plate disposed above the bottom plate, the bottom plate is fixedly connected to the ground, the top plate is fixedly connected to the bottom end of the vertical pipe, and a plurality of support members are spaced between the bottom plate and the top plate to allow the top plate to move back and forth along the axial direction of the vertical pipe relative to the bottom plate.

3. The hot air duct structure according to claim 2, wherein the supporting member comprises a first sleeve, a second sleeve and a compression spring, the top end of the first sleeve is fixedly connected to the bottom surface of the top plate, the second sleeve is fixedly connected to the top surface of the bottom plate, the second sleeve is sleeved in the first sleeve, one end of the compression spring is located in the first sleeve, and the other end of the compression spring is located in the second sleeve.

4. The hot blast pipe structure according to claim 3, wherein the supporting assembly further comprises a limiting member, the limiting member comprises a first limiting plate, a second limiting plate and at least one limiting rod, the first limiting plate is fixedly disposed on the outer wall of the first sleeve, the second limiting plate is fixedly disposed on the outer wall of the second sleeve, at least one set of through holes corresponding to one another are respectively disposed on the first limiting plate and the second limiting plate, the axis of the limiting rod is parallel to the axis of the vertical cylinder, the limiting rod penetrates through the through holes of the first limiting plate and the through holes of the second limiting plate, plugs are disposed at two ends of the limiting rod, and the first limiting plate and the second limiting plate are located between the two plugs.

5. The hot blast pipe structure according to claim 4, wherein both ends of said limiting rod are provided with external threads, and said plug is a nut.

6. The hot blast pipe structure according to claim 4, wherein an inner diameter of said through hole is equal to a diameter of said stopper rod.

7. The hot blast pipe structure according to claim 4, wherein said first and second limiting plates are both annular, said first limiting plate being disposed coaxially with said first sleeve, said second limiting plate being disposed coaxially with said second sleeve.

8. A hot air duct structure according to claim 2, wherein said support base comprises at least five support members, one of said support members being arranged coaxially with said base plate, the remaining support members being arranged at equal intervals around the axis of said base plate.

9. The hot air duct structure according to claim 2, wherein the bottom plate comprises a first plate and a second plate arranged in parallel, and a sliding pair is disposed between the first plate and the second plate.

10. The hot blast main structure according to claim 1, wherein a manhole is provided on the vertical pipe, and the manhole is provided above the horizontal pipe.

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