CN216464076U - Supporting mechanism of high temperature boiler tube - Google Patents
Supporting mechanism of high temperature boiler tube Download PDFInfo
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- CN216464076U CN216464076U CN202122067308.6U CN202122067308U CN216464076U CN 216464076 U CN216464076 U CN 216464076U CN 202122067308 U CN202122067308 U CN 202122067308U CN 216464076 U CN216464076 U CN 216464076U
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Abstract
The utility model belongs to the technical field of high-temperature equipment, particularly relates to the field of F27D5/00, and particularly relates to a supporting mechanism of a high-temperature furnace tube. Including the boiler tube, still include: the supporting fork is arranged on one side of the furnace tube facing the ground; the support fork is in sliding contact connection with the furnace tube in the axial direction of the furnace tube; the supporting cylinder is of a hollow cylindrical structure, the supporting cylinder is arranged on one side, facing the ground, of the supporting fork, and the supporting cylinder is fixedly connected with the supporting fork; the elastic body is arranged on one side, facing the ground, of the supporting cylinder; the elastic body is in contact with the support cylinder. The structure is a flexible support for the high-temperature furnace tube, and the prior art is a rigid support. The elastic support is similar to a buoyancy support, any point of a large-span multi-point support can be supported, and virtual support of certain support points in a rigid support mode due to errors caused by manufacturing factors is avoided.
Description
Technical Field
The utility model belongs to the technical field of high-temperature equipment, particularly relates to the field of F27D5/00, and particularly relates to a supporting mechanism of a high-temperature furnace tube.
Background
In a tubular mineral powder calcining kiln or a tubular powder metallurgy kiln, a furnace tube is usually one of key equipment serving as a material conveying channel or an atmosphere maintenance channel, for a calcining kiln with a certain mass production scale, the length of the furnace tube is usually tens of meters or even hundreds of meters, and the whole tube pass needs a plurality of supports to maintain the mechanical stability of the furnace tube, so that the mechanical stability of the whole kiln equipment is ensured.
Chinese patent publication No. CN204027320U discloses a tube support for furnace tubes, in which the cross section of the vertical column is in the shape of a [ ", and the cross section of the support beam of the tube support is in the shape of an i. The novel structure saves materials for the pipe frame and has high bearing capacity. The first pipe frame is in a combined assembly form, and is simple in structure and convenient to disassemble and assemble.
Similar to the above patent, during the construction of the kiln, according to the set supporting distance position, a plurality of equal-height supporting beams are built on the bottom of the hearth of the kiln by using heavy refractory bricks with higher strength and are distributed on the whole hearth, and the furnace tube is erected on the hearth to support the tube pass of the furnace tube at multiple points. When the furnace tube is heated to generate axial expansion, the furnace tube can slide along the supporting point, the effect of thermal expansion force on the furnace tube is released, when the furnace tube is heated to generate radial expansion, because the supporting beam arranged on the hearth is immovable and the refractory material of the supporting beam can generate thermal expansion, two thermal expansion forces are mutually superposed, the superposed force can act on the furnace tube and the supporting beam, the force is an internal force, and the direction of the force is a tensile force which is diverged along the normal direction of a point, a line and a surface contacted by an object. That is, the force is to destroy the structure of the object, namely, the axial line of the furnace tube is lifted up to release the axial line of the furnace tube, or the tube body of the furnace tube is sunken and deformed to release the axial line of the furnace tube, or the support beam is collapsed to release the axial line of the furnace tube. I.e. necessarily resulting in a deterioration of the mechanical stability of the structure. Thereby increasing the failure rate and shortening the service life of the structure in the using process.
SUMMERY OF THE UTILITY MODEL
In view of the above problems, the present invention provides a supporting mechanism for a high temperature furnace tube, which comprises a furnace tube, and further comprises:
the supporting fork is arranged on one side of the furnace tube facing the ground; the supporting fork is in sliding contact connection with the furnace tube in the axial direction of the furnace tube;
the supporting cylinder is of a hollow cylindrical structure, the supporting cylinder is arranged on one side, facing the ground, of the supporting fork, and the supporting cylinder is fixedly connected with the supporting fork;
the elastic body is arranged on one side, facing the ground, of the supporting cylinder; the elastic body is in contact with the support cylinder.
As a preferable technical solution, the supporting fork is arranged in a V shape, and a contact line between the supporting fork and the furnace tube is at least half of a circumference of a cross-sectional circle of the furnace tube.
As a preferable technical solution, the cavity of the supporting cylinder is filled with heat insulating filler.
As a preferred technical solution, the heat insulating filler is provided as heat insulating ceramic fibers.
As a preferable technical scheme, an end face seal plate is arranged on the end face of the support cylinder far away from the support fork, a coaxial sleeve is arranged on the end face seal plate in the direction of the support fork, and the diameter of the sleeve is smaller than that of the support cylinder.
As a preferable technical solution, the elastic body is a compression spring, the compression spring is disposed on a side of the support cylinder facing the ground, and the compression spring is sleeved outside the sleeve.
As a preferable technical scheme, the device also comprises a seat plate and a sleeve, wherein the seat plate is arranged in the direction of the sleeve facing the ground, and the seat plate is fixedly connected with the sleeve; the sleeve is of a cylindrical structure with one end opened away from the ground, the supporting cylinder and the elastic body are arranged in the sleeve, and the outer diameter of the supporting cylinder and the inner diameter of the sleeve are executed according to standard tolerance of a loop.
As a preferable technical scheme, the seat plate is of a flat plate structure, the plane of the seat plate is perpendicular to the axis of the sleeve, and a reinforced rib plate is arranged between the outer side of the sleeve and the seat plate.
As a preferred technical scheme, a heating furnace body is coaxially arranged outside the furnace tube, the heating furnace body and the furnace tube are movably arranged in the axial direction, and the support fork and the support cylinder are fixedly connected to the heating furnace body.
As a preferable technical solution, a gravity sensor is disposed between the support cylinder and the elastic body.
Has the advantages that:
(1) the utility model provides a supporting mechanism of a high-temperature furnace tube, which is used for the technical field of high-temperature calcination and solves the problems of connectivity damage and mechanical structure stability damage caused by expansion and contraction phenomena caused by thermal stress; the structure is a flexible support (namely an elastic support) for the high-temperature furnace tube, and the prior art is a rigid support. The elastic support is similar to a buoyancy support, any point of a large-span multi-point support can be supported, and virtual support of certain support points in a rigid support mode due to errors caused by manufacturing factors is avoided.
(2) In the supporting mechanism provided by the utility model, the supporting cylinder is filled with the heat insulation ceramic fiber cotton, and the hollow tubular structure of the supporting cylinder and the heat insulation ceramic fiber cotton layer jointly reduce the comprehensive heat transfer coefficient of the supporting cylinder and reduce the heat conduction and radiation loss of the supporting mechanism to the furnace.
(3) The structure is an external assembled structure of the furnace body, a gravity sensor can be installed between the bottom of the supporting cylinder and the upper part of the pressure spring in a leading-in mode, the change of force in the expansion process between the pipe diameters of the furnace is detected on line and used for research, and the structure has scientific significance for research and development of the engineering equipment.
Drawings
FIG. 1 is a schematic structural diagram of a supporting mechanism for a high temperature furnace tube according to the present invention;
FIG. 2 is a schematic axial sectional view;
wherein, the furnace comprises 1-a furnace tube, 2-a supporting fork, 3-a supporting cylinder, 4-an elastomer, 5-a heat insulation filler, 6-a sleeve, 7-a seat plate, 8-a sleeve and 9-a heating furnace body.
Detailed Description
The utility model provides a supporting mechanism of high temperature boiler tube, includes boiler tube 1, still includes:
the supporting fork 2 is arranged on one side of the furnace tube 1 facing the ground; the supporting fork 2 is connected with the furnace tube 1 in a sliding contact manner in the axial direction of the furnace tube 1;
the supporting cylinder 3 is of a hollow cylindrical structure, the supporting cylinder 3 is arranged on one side, facing the ground, of the supporting fork 2, and the supporting cylinder 3 is fixedly connected with the supporting fork 2;
the elastic body 4 is arranged on one side of the supporting cylinder 3 facing the ground; the elastic body 4 and the support cylinder 3 are disposed in contact.
In the structure of the utility model, the thermal expansion amount generated in the axial lead direction of the high-temperature furnace tube expanded by heat is released by the relative sliding between the furnace tube and the V-shaped supporting fork contact,
in some preferred embodiments, the support fork 2 is arranged in a V shape, and the contact line of the support fork 2 and the furnace tube 1 is at least half of the perimeter of the cross-sectional circle of the furnace tube 1.
In some preferred embodiments, the supporting cylinder 3 cavity is filled with a heat insulating filler 5.
The hollow tubular structure of the supporting cylinder and the heat insulation ceramic fiber cotton layer jointly reduce the comprehensive heat transfer coefficient of the supporting cylinder and reduce the heat conduction and radiation loss of the supporting mechanism to the furnace.
In some preferred embodiments, the thermally insulating filler 5 is provided as thermally insulating ceramic fibers.
In some preferred embodiments, the end face of the support cylinder 3 facing away from the support fork 2 is provided with an end face sealing plate, which is provided with a coaxial sleeve 6 facing in the direction of the support fork 2, and the diameter of the sleeve 6 is smaller than the diameter of the support cylinder 3.
In some preferred embodiments, the elastic body 4 is provided as a compression spring, which is arranged on the side of the support cylinder 3 facing the ground and which is arranged outside the sleeve 6.
The compression spring adopted in the structure utilizes the principle that the compression spring generates dimensional deformation in the stress direction when being compressed, and any reed, reed combination or rubber air cushion and other structural parts which avoid the shape of the compression spring and utilize the same principle are regarded as equivalent alternatives of the patent scheme.
In some preferred embodiments, the device further comprises a seat plate 7 and a sleeve 8, wherein the seat plate 7 is arranged in the direction of the sleeve 8 facing the ground, and the seat plate 7 is fixedly connected with the sleeve 8; the sleeve 8 is arranged to be a cylindrical structure with one end opened away from the ground, the support cylinder 3 and the elastic body 4 are arranged in the sleeve 8, and the outer diameter of the support cylinder 3 and the inner diameter of the sleeve 8 are implemented according to standard tolerance of a loop.
In the structure of the utility model, the thermal expansion amount generated in the radial direction of the high-temperature furnace tube expanded by heat is released by pushing the support fork to compress the deformation amount of the pressure spring downwards. Thereby eliminating thermal stress and ensuring the mechanical stability of the original structure. The sleeve and the sleeve are arranged in a matched mode, in some preferred embodiments, the cross section figures of the sleeve and the sleeve are circular, installation is convenient, and sliding connection is stable; any type of structure that enables axially-drawn sliding should be considered an equivalent alternative to the present patent.
In some preferred embodiments, the seat plate 7 is provided as a flat plate structure, the plane of the seat plate 7 is perpendicular to the axis of the sleeve 8, and a reinforcing rib is provided between the outside of the sleeve 8 and the seat plate 7.
In some preferred embodiments, a heating furnace body 9 is coaxially arranged outside the furnace tube 1, the heating furnace body 9 and the furnace tube 1 are movably arranged in the axial direction, and the support fork 2 and the support cylinder 3 are fixedly connected to the heating furnace body 9.
In some preferred embodiments, a gravity sensor is disposed between the support cylinder 3 and the elastic body 4.
The working principle is as follows: the utility model provides a supporting mechanism of a high-temperature furnace tube, which is used in the technical field of high-temperature calcination and solves the problems of connectivity damage and mechanical structure stability damage caused by expansion and contraction phenomena caused by thermal stress; the structure is a flexible support (namely an elastic support) for the high-temperature furnace tube, and the prior art is a rigid support. The elastic support is similar to a buoyancy support, any point of a large-span multi-point support can be supported, and virtual support of certain support points in a rigid support mode due to errors caused by manufacturing factors is avoided. The thermal expansion amount generated in the axial lead direction of the high-temperature furnace tube which is heated to expand is released through the relative sliding between the furnace tube and the contact point of the V-shaped supporting fork, and the thermal expansion amount generated in the radial direction is released through pushing the supporting fork to compress the deformation amount of the pressure spring downwards. Thereby eliminating thermal stress and ensuring the mechanical stability of the original structure.
Claims (10)
1. The utility model provides a supporting mechanism of high temperature boiler tube, includes boiler tube (1), its characterized in that still includes:
the supporting fork (2) is arranged on one side, facing the ground, of the furnace tube (1); the supporting fork (2) is in sliding contact connection with the furnace tube (1) in the axial direction of the furnace tube (1);
the supporting cylinder (3) is of a hollow cylindrical structure, the supporting cylinder (3) is arranged on one side, facing the ground, of the supporting fork (2), and the supporting cylinder (3) is fixedly connected with the supporting fork (2);
the elastic body (4), the elastic body (4) is arranged on one side of the supporting cylinder (3) facing the ground; the elastic body (4) is in contact with the support cylinder (3).
2. The support mechanism for the high-temperature furnace tube according to claim 1, wherein the support fork (2) is arranged in a V shape, and a contact line between the support fork (2) and the furnace tube (1) is at least half of a perimeter of a cross-sectional circle of the furnace tube (1).
3. The supporting mechanism of the high-temperature furnace tube according to claim 1, wherein the supporting cylinder (3) is filled with heat-insulating filler (5) inside the cavity.
4. The support mechanism for high temperature furnace tubes according to claim 3, wherein the heat insulating filler (5) is provided as heat insulating ceramic fibers.
5. The supporting mechanism for the high temperature furnace tube according to claim 1, wherein an end face sealing plate is disposed on an end face of the supporting tube (3) far away from the supporting fork (2), the end face sealing plate is provided with a coaxial sleeve (6) in a direction far away from the supporting fork (2), and a diameter of the sleeve (6) is smaller than a diameter of the supporting tube (3).
6. The support mechanism of the high-temperature furnace tube according to claim 5, wherein the elastic body (4) is provided as a compression spring, the compression spring is arranged on one side of the support cylinder (3) facing the ground, and the compression spring is sleeved outside the sleeve (6).
7. The support mechanism for the high-temperature furnace tube according to claim 1, further comprising a seat plate (7) and a sleeve (8), wherein the seat plate (7) is arranged in a direction of the sleeve (8) towards the ground, and the seat plate (7) is fixedly connected with the sleeve (8); the sleeve (8) is arranged to be a cylindrical structure with one end opened away from the ground, the supporting cylinder (3) and the elastic body (4) are arranged in the sleeve (8), and the outer diameter of the supporting cylinder (3) and the inner diameter of the sleeve (8) are executed according to the standard tolerance of a loop.
8. The supporting mechanism for the high-temperature furnace tube as claimed in claim 7, wherein the seat plate (7) is configured as a flat plate structure, the plane of the seat plate (7) is perpendicular to the axis of the sleeve (8), and a reinforced rib plate is arranged between the outer side of the sleeve (8) and the seat plate (7).
9. The supporting mechanism of the high-temperature furnace tube according to claim 1, wherein a heating furnace body (9) is coaxially arranged outside the furnace tube (1), the heating furnace body (9) and the furnace tube (1) are movably arranged in the axial direction, and the supporting fork (2) and the supporting cylinder (3) are fixedly connected to the heating furnace body (9).
10. The supporting mechanism of the high-temperature furnace tube according to claim 1, wherein a gravity sensor is arranged between the supporting cylinder (3) and the elastic body (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122067308.6U CN216464076U (en) | 2021-08-30 | 2021-08-30 | Supporting mechanism of high temperature boiler tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122067308.6U CN216464076U (en) | 2021-08-30 | 2021-08-30 | Supporting mechanism of high temperature boiler tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216464076U true CN216464076U (en) | 2022-05-10 |
Family
ID=81431634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122067308.6U Active CN216464076U (en) | 2021-08-30 | 2021-08-30 | Supporting mechanism of high temperature boiler tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216464076U (en) |
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2021
- 2021-08-30 CN CN202122067308.6U patent/CN216464076U/en active Active
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