CN209857652U - Refractory lining structure of high-temperature equipment - Google Patents
Refractory lining structure of high-temperature equipment Download PDFInfo
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- CN209857652U CN209857652U CN201920172569.4U CN201920172569U CN209857652U CN 209857652 U CN209857652 U CN 209857652U CN 201920172569 U CN201920172569 U CN 201920172569U CN 209857652 U CN209857652 U CN 209857652U
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Abstract
The utility model provides a refractory lining structure of high temperature equipment, which comprises a stainless steel metal lining, a sealing cone supporting piece for supporting the stainless steel metal lining, a refractory material layer and a fixing piece; the refractory material layer wraps the shell of the equipment; one end of the sealing cone supporting piece is connected with the stainless steel metal lining, and the other end of the sealing cone supporting piece is connected with the shell; the fixing piece is arranged in the refractory material layer and used for fixing the refractory material layer on the shell; expansion gaps are arranged between the stainless steel metal lining and the refractory material layer and in the axial direction of the stainless steel metal lining. The utility model discloses high temperature equipment's refractory lining structure is guaranteeing the safe operation of equipment, and under the prerequisite that equipment housing surface temperature satisfies the process design requirement, has reduced high temperature equipment maintenance frequency to the life of high temperature equipment and refractory lining structure has been prolonged.
Description
Technical Field
The utility model relates to the chemical industry equipment field especially relates to a refractory lining structure of high temperature equipment.
Background
In a chemical device, equipment with a high medium temperature is often encountered, the flow rate of the medium is high, and certain air flow scouring vibration exists sometimes. In this case, a material resistant to high temperature may be selected, but the investment cost is large. The general method is to arrange a refractory lining structure inside the equipment and add a layer of thin stainless steel metal lining on the surface of the refractory material for protection. This stainless steel metal lining can prevent that high-temperature gas is direct to refractory material's contact and erode, even if refractory material takes place less destruction or fracture, high-temperature gas can not directly contact with equipment casing through destruction or fracture region, causes the production of equipment casing overtemperature prote phenomenon. Stainless steel metal linings play a crucial role in the structural design of refractory linings for high temperature equipment.
However, the stainless steel metal lining is also subject to new problems, such as cracking of the stainless steel metal lining due to limited thermal expansion, cracking and falling of the refractory material, and further, high-temperature gas directly penetrates through the refractory lining structure to contact with the equipment shell, thereby causing the equipment shell to be over-heated, and greatly shortening the service life of the equipment.
In addition, with the development of new technological processes, the temperature of a medium required by the reaction is higher and higher, and higher requirements are put forward on a refractory lining structure. Designing a reliable refractory lining structure to ensure long-term safe and reliable operation of the equipment becomes the focus of attention of designers.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems that the equipment shell is over-heated due to the failure of the existing high-temperature equipment refractory lining structure, the safe use of the equipment is influenced, and the maintenance frequency is too high, and provides a refractory lining structure which comprises a stainless steel metal lining, a sealing cone supporting piece for supporting the stainless steel metal lining, a refractory material layer and a fixing piece; the refractory material layer wraps the shell of the equipment; one end of the sealing cone supporting piece is connected with the stainless steel metal lining, and the other end of the sealing cone supporting piece is connected with the shell; the fixing piece is arranged in the refractory material layer and used for fixing the refractory material layer on the shell; expansion gaps are arranged between the stainless steel metal lining and the refractory material layer and in the axial direction of the stainless steel metal lining. The utility model discloses high temperature equipment's refractory lining structure is guaranteeing the safe operation of equipment, and under the prerequisite that equipment housing surface temperature satisfies the process design requirement, has reduced high temperature equipment maintenance frequency to the life of high temperature equipment and refractory lining structure has been prolonged.
To achieve the above and other related objects, the present invention provides a refractory lining structure, which includes a stainless steel metal lining, a sealing cone support member for supporting the stainless steel metal lining, a refractory material layer, and a fixing member;
the refractory material layer wraps the shell of the equipment;
one end of the sealing cone supporting piece is connected with the stainless steel metal lining, and the other end of the sealing cone supporting piece is connected with the shell;
the fixing piece is arranged in the refractory material layer and used for fixing the refractory material layer on the shell;
expansion gaps are arranged between the stainless steel metal lining and the refractory material layer and in the axial direction of the stainless steel metal lining.
Preferably, the expansion gap between the stainless steel metal lining and the refractory material layer is a radial expansion gap, and the expansion gap axially arranged on the stainless steel metal lining is an axial expansion gap.
More preferably, the stainless steel metal lining includes first section stainless steel metal lining body, second section stainless steel metal lining body and axial expansion joint unit, the axial expansion joint unit includes first baffle, second baffle, first backing plate and second backing plate, first section stainless steel metal lining body and second section stainless steel metal lining body part is located first baffle with between the second baffle, the one end of first baffle is passed through first backing plate with first section stainless steel metal lining body coupling, the one end of second baffle is passed through the second backing plate with first section stainless steel metal lining body coupling, first section stainless steel metal lining body second section stainless steel metal lining body with form between the axial expansion joint unit the axial expansion clearance.
Further more preferably, at least one of the following technical features is also included:
1) the first base plate and the second base plate are respectively arranged on the outer wall side and the inner wall side of the first section of stainless steel metal lining body;
2) one end of the sealing cone supporting piece is connected with the second baffle of the stainless steel metal lining, and the other end of the sealing cone supporting piece is connected with the shell.
Preferably, the included angle alpha between the sealing cone supporting piece and the shell is 20-60 degrees.
Preferably, the thickness of the sealing cone support piece is 3-12 mm.
Preferably, the sealing cone support comprises a first support unit connected with the stainless steel metal lining and a second support unit connected with the shell, wherein the material of the first support unit is the same as that of the stainless steel metal lining, and the material of the second support unit is the same as that of the shell.
Preferably, the refractory material layer is a casting material, such as a lightweight casting material, a medium casting material, or other casting materials capable of meeting the wall temperature requirement of the equipment housing.
Preferably, the sealing cone support divides the refractory material layer into a first refractory material unit and a second refractory material unit, the first refractory material unit is located above the second refractory material unit, a first refractory material protection unit is arranged among the stainless steel metal lining, the sealing cone support and the first refractory material unit, and a second refractory material protection unit is arranged among the shell, the sealing cone support and the second refractory material unit.
More preferably, the first refractory protection unit is made of a soft heat-insulating refractory material, such as a pyrex block, a ceramic fiber block, and the like, and the second refractory protection unit is made of a ceramic fiber blanket, and the thickness of the ceramic fiber blanket may be 10-30 mm.
The utility model discloses refractory lining structure of high temperature equipment includes stainless steel metal lining, is used for supporting stainless steel metal lining's sealed awl support piece, refractory material layer and mounting, stainless steel metal lining with between the refractory material layer to and stainless steel metal lining's axial all is equipped with the expansion gap, is equipped with the expansion gap to stainless steel metal lining's axial to introduce sealed awl support piece for the first time, sealed awl support piece's one end with stainless steel metal lining connects, sealed awl support piece's the other end with the casing is connected, divides into several independent cavitys with refractory lining structure, has increased refractory lining structure's reliability, reduces and overhauls the frequency, guarantees high temperature equipment casing surface temperature at the within range of design regulation, has improved the security and the life of high temperature equipment's operation.
Drawings
Fig. 1 is a sectional view of a refractory lining structure according to example 1 of the present invention.
Fig. 2 is a cross-sectional view of a stainless steel metal lined axial expansion joint unit according to example 1 of the present invention.
Reference numerals:
1 stainless steel metal lining
11 first stage stainless steel metal lining body
12 axial expansion joint unit
13 second stage stainless steel metal lining body
121 first baffle
122 second baffle
123 first pad
124 second backing plate
2 sealing cone support
21 first support unit
22 second support unit
3 layer of refractory material
31 first refractory unit
32 second refractory unit
4 fixing part
5 casing
6 radial expansion gap
7 axial expansion gap
8 first refractory protection unit
9 second refractory protection unit
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
Please refer to fig. 1 and fig. 2. It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
A refractory lining structure, as shown in fig. 1, comprising a stainless steel metal lining 1, a sealing cone support 2 for supporting the stainless steel metal lining 1, a refractory material layer 3 and a fixing member 4;
the refractory material layer 3 wraps a shell 5 of the equipment;
one end of the sealing cone supporting piece 2 is connected with the stainless steel metal lining 1, and the other end of the sealing cone supporting piece 2 is connected with the shell 5;
the fixing piece 4 is arranged in the refractory material layer 3 and used for fixing the refractory material layer 3 on the shell 5;
expansion gaps are arranged between the stainless steel metal lining 1 and the refractory material layer 3 and in the axial direction of the stainless steel metal lining 1.
The sealing cone support supports the stainless steel metal lining 1 and limits the axial displacement of the joint.
The sealing cone supporting piece 2 divides the refractory lining structure into a plurality of independent cavities, gas channeling is prevented, and the overtemperature phenomenon of the shell is greatly reduced.
In a preferred embodiment, the expansion gap between the stainless steel metal lining 1 and the refractory layer 3 is a radial expansion gap 6, and the expansion gap axially provided by the stainless steel metal lining 1 is an axial expansion gap 7. The radial expansion gap 6 is used for responding to the thermal expansion of the stainless steel metal lining 1 in the radial direction, the radial expansion gaps with different heights from top to bottom are kept the same as much as possible, and the axial expansion gap 7 is used for responding to the thermal expansion of the stainless steel metal lining 1 in the axial direction.
In a preferred embodiment, as shown in fig. 2, the stainless steel metal liner 1 comprises a first section of stainless steel metal liner body 11, a second section of stainless steel metal liner body 13 and an axial expansion joint unit 12, the axial expansion joint unit 12 includes a first baffle plate 121, a second baffle plate 122, a first shim plate 123 and a second shim plate 124, the first length of stainless steel metal liner body 11 and the second length of stainless steel metal liner body 13 are partially positioned between the first baffle plate 121 and the second baffle plate 122, one end of the first baffle plate 121 is connected to the first length of stainless steel metal liner body 11 via the first backing plate 123, one end of the second baffle plate 122 is connected to the first length of stainless steel metal liner body 11 through the second backing plate 124, the axial expansion gap 7 is formed between the first section of stainless steel metal lining body 11, the second section of stainless steel metal lining body 13 and the axial expansion joint unit 12. The first baffle 121 and the second baffle 122 reduce the gas flow rate, and reduce the scouring of the refractory material by the high-temperature gas. The axial expansion joint unit 12 is used to cope with thermal expansion of the stainless steel metal liner 1 in the axial direction.
In a preferred embodiment, at least one of the following technical features is also included:
1) the first backing plate 123 and the second backing plate 124 are respectively arranged on the outer wall side and the inner wall side of the first section of stainless steel metal lining body 11;
2) one end of the sealing cone support 2 is connected to the second baffle 122 of the stainless steel metal liner 1, and the other end of the sealing cone support 2 is connected to the shell 5.
The purpose of the first and second backing plates 123 and 124 is to allow a certain gap between the first and second baffles 121 and 122 and the first and second sections of stainless steel metal lining bodies, so as to facilitate installation, facilitate free expansion after heating, and facilitate welding.
In a preferred embodiment, the included angle α between the sealing cone supporting member 2 and the shell 5 is 20-60 °, and the reasonable arrangement of the included angle α can facilitate the thermal expansion of the stainless steel metal lining, and reduce the stress at the joint of the sealing cone supporting member, the stainless steel metal lining and the shell to the maximum extent.
In a preferred embodiment, the thickness of the sealing cone support 2 is 3-12 mm, and the thickness is too large and the rigidity is too strong, so that the thermal deformation of the sealing cone support is not facilitated; the appropriate thickness can coordinate the rigidity and deformation of the whole structure, and is beneficial to reducing the structural stress.
In a preferred embodiment, the sealing cone support 2 comprises a first support unit 21 connected to the stainless steel metal liner 1 and a second support unit 22 connected to the housing 5, the material of the first support unit is the same as that of the stainless steel metal liner 1, and the material of the second support unit 22 is the same as that of the housing 5. Welding of the same material can reduce stress at the joint, and the linear expansion coefficient is consistent and the thermal deformation is coordinated.
In a preferred embodiment, the refractory layer is a casting material, such as a lightweight casting material, a medium casting material, or another casting material that meets the requirements of the wall temperature of the equipment enclosure.
In a preferred embodiment, the sealing cone support 2 divides the refractory material layer 3 into a first refractory material unit 31 and a second refractory material unit 32, the first refractory material unit 31 is located above the second refractory material unit 32, a first refractory material protection unit 8 is arranged between the stainless steel metal lining 1, the sealing cone support 2 and the first refractory material unit 31, a second refractory material protection unit 9 is arranged between the shell, the sealing cone support 2 and the second refractory material unit 32, and the first refractory material protection unit 8 and the second refractory material protection unit 9 prevent the sealing cone support 2 from thermal deformation to press the refractory material layer 3, which results in the damage of the refractory material layer 3.
In a preferred embodiment, the material of the first refractory protection unit 8 is a soft heat-insulating refractory material, such as pyrex block, ceramic fiber block, etc., and the material of the second refractory protection unit 9 is a ceramic fiber blanket. The thickness of the ceramic fiber blanket can be 10-30 mm. For example, as shown in fig. 1, a pyrex block or a ceramic fiber block is installed at the sharp corner of a stainless steel metal lining 1 and a sealing cone support 2, and a ceramic fiber blanket is placed on the back of the sealing cone support 2.
On the basis of meeting the common knowledge in the field, according to the detailed design parameters and the structural parameters of the high-temperature equipment, the above preferred conditions can be combined at will, and the preferred embodiments of the invention can be obtained.
Engineering example 1
The inner diameter of one high-temperature device is 2200mm, the operating temperature is 705 ℃, the design pressure is 0.276MPa, and the operating temperature range of the device shell is ensured to be 120-315 ℃. The structure of the refractory lining of the utility model is shown in figure 1 and figure 2.
The refractory lining structure of the high-temperature equipment comprises a stainless steel metal lining 1, a sealing cone supporting piece 2 for supporting the stainless steel metal lining 1, a refractory material layer 3 and a fixing piece 4; the refractory material layer 3 wraps a shell 5 of the equipment; one end of the sealing cone supporting piece 2 is connected with the stainless steel metal lining 1, and the other end of the sealing cone supporting piece 2 is connected with the shell 5; the fixing piece 4 is arranged in the refractory material layer 3 and used for fixing the refractory material layer 3 on the shell 5; expansion gaps are arranged between the stainless steel metal lining 1 and the refractory material layer 3 and in the axial direction of the stainless steel metal lining 1.
The expansion gap between the stainless steel metal lining 1 and the refractory material layer 3 is a radial expansion gap 6, and the expansion gap axially arranged on the stainless steel metal lining 1 is an axial expansion gap 7.
The radial expansion gap is determined by calculation based on the diameter of the stainless steel metal liner 1, the operating temperature and the linear expansion coefficient. In this embodiment, the radial expansion gap is taken to be 25 mm.
The stainless steel metal lining 1 comprises a first section of stainless steel metal lining body 11, a second section of stainless steel metal lining body 13 and an axial expansion joint unit 12, the axial expansion joint unit 12 includes a first baffle plate 121, a second baffle plate 122, a first shim plate 123 and a second shim plate 124, the first length of stainless steel metal liner body 11 and the second length of stainless steel metal liner body 13 are partially positioned between the first baffle plate 121 and the second baffle plate 122, one end of the first baffle plate 121 is connected to the first length of stainless steel metal liner body 11 via the first backing plate 123, one end of the second baffle plate 122 is connected to the first length of stainless steel metal liner body 11 through the second backing plate 124, the axial expansion gap 7 is formed between the first section of stainless steel metal lining body 11, the second section of stainless steel metal lining body 13 and the axial expansion joint unit 12. The first shim plate 123 and the second shim plate 124 are respectively disposed on the outer wall side and the inner wall side of the first section of the stainless steel metal lining body 11.
The axial expansion joint unit 12 reserves an axial expansion gap for the stainless steel metal lining 1 to axially expand, and the axial expansion gap is determined according to the distance between the two sealing cone supports, the operating temperature and the linear expansion coefficient of the stainless steel metal lining 1.
The main function of the first base plate 123 and the second base plate 124 can be to leave enough space for the installation of the first section of the stainless steel metal lining body and the second section of the stainless steel metal lining body; the first baffle 121 and the second baffle 122 can reduce the flow rate of the gas, and prevent the refractory material from being directly washed by the high-temperature gas.
One end of the sealing cone support 2 is connected with the second baffle 122 of the stainless steel metal lining 1, preferably, the lower part of the second baffle 122 of the stainless steel metal lining 1, so that the thermal stress of the sealing cone support 2 can be reduced, and the other end of the sealing cone support 2 is connected with the shell 5.
The included angle alpha between the sealing cone supporting piece 2 and the shell 5 is 25 degrees.
The thickness of the sealing cone support 2 is 4 mm.
The sealing cone support 2 comprises a first support unit 21 connected with the stainless steel metal lining 1 and a second support unit 22 connected with the shell 5, wherein the material of the first support unit is the same as that of the stainless steel metal lining 1, and the material of the second support unit 22 is the same as that of the shell 5.
The refractory material layer 3 is made of light castable. The fixing piece 4 is an anchoring nail, is welded on the equipment shell 5 and is used for fixing the light castable and preventing the light castable from falling off.
The sealing cone support 2 divides the refractory material layer 3 into a first refractory material unit 31 and a second refractory material unit 32, the first refractory material unit 31 is located above the second refractory material unit 32, a first refractory material protection unit 8 is arranged between the stainless steel metal lining 1, the sealing cone support 2 and the first refractory material unit 31, and a second refractory material protection unit 9 is arranged between the shell, the sealing cone support 2 and the second refractory material unit 32.
The first refractory protection unit 8 is made of pyrex blocks, and the second refractory protection unit 9 is made of ceramic fiber blankets. Through heat transfer calculation, in order to meet the requirement of the operating temperature of the equipment shell, the thickness of the refractory material light castable 3 is 110 mm.
When the equipment runs at high temperature, the stainless steel metal lining 1 can generate radial expansion and axial expansion, and the stainless steel metal lining 1 can freely perform thermal expansion due to the pre-reserved expansion gap, and meanwhile, the lightweight castable 5 cannot be extruded, so that the lightweight castable 5 is prevented from cracking due to extrusion. The sealing cone supporting piece 2 divides the refractory lining structure into a plurality of independent cavities, gas channeling is prevented, the overtemperature phenomenon of the equipment shell is greatly reduced, and long-period safe and reliable operation of the equipment is ensured.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may 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.
Claims (10)
1. Refractory lining structure, characterized in that it comprises a stainless steel metal lining (1), a sealing cone support (2) for supporting the stainless steel metal lining (1), a refractory layer (3) and a fixing (4);
the refractory material layer (3) wraps a shell (5) of the equipment;
one end of the sealing cone supporting piece (2) is connected with the stainless steel metal lining (1), and the other end of the sealing cone supporting piece (2) is connected with the shell (5);
the fixing piece (4) is arranged in the refractory material layer (3) and is used for fixing the refractory material layer (3) on the shell (5);
expansion gaps are arranged between the stainless steel metal lining (1) and the refractory material layer (3) and in the axial direction of the stainless steel metal lining (1).
2. The refractory lining structure according to claim 1, wherein the expansion gap between the stainless steel metal lining (1) and the refractory layer (3) is a radial expansion gap (6) and the axially arranged expansion gap of the stainless steel metal lining (1) is an axial expansion gap (7).
3. The refractory lining structure according to claim 2, wherein the stainless steel metal lining (1) comprises a first length of stainless steel metal lining body (11), a second length of stainless steel metal lining body (13) and an axial expansion joint unit (12), the axial expansion joint unit (12) comprises a first baffle plate (121), a second baffle plate (122), a first shim plate (123) and a second shim plate (124), the first length of stainless steel metal lining body (11) and the second length of stainless steel metal lining body (13) are partially located between the first baffle plate (121) and the second baffle plate (122), one end of the first baffle plate (121) is connected with the first length of stainless steel metal lining body (11) through the first shim plate (123), one end of the second baffle plate (122) is connected with the first length of stainless steel metal lining body (11) through the second shim plate (124), the axial expansion gap (7) is formed between the first section of stainless steel metal liner body (11), the second section of stainless steel metal liner body (13) and the axial expansion joint unit (12).
4. The refractory lining structure as claimed in claim 3 further comprising at least one of the following technical features:
1) the first backing plate (123) and the second backing plate (124) are respectively arranged on the outer wall side and the inner wall side of the first section of stainless steel metal lining body (11);
2) one end of the sealing cone support (2) is connected with the second baffle plate (122) of the stainless steel metal lining (1).
5. Refractory lining structure according to claim 1, characterised in that the angle α between the sealing cone support (2) and the shell (5) is 20-60 °.
6. Refractory lining structure according to claim 1, characterized in that the thickness of the sealing cone support (2) is 3-12 mm.
7. The refractory lining structure according to claim 1, wherein the sealing cone support (2) comprises a first support unit (21) connected to the stainless steel metal lining (1) and a second support unit (22) connected to the shell (5), the material of the first support unit being the same as the material of the stainless steel metal lining (1), the material of the second support unit (22) being the same as the material of the shell (5).
8. Refractory lining structure according to claim 1, characterized in that the layer of refractory material (3) is a castable material.
9. The refractory lining structure according to claim 1, characterized in that the sealing cone support (2) divides the refractory layer (3) into a first refractory unit (31) and a second refractory unit (32), the first refractory unit (31) being located above the second refractory unit (32), a first refractory protection unit (8) being provided between the stainless steel metal lining (1), the sealing cone support (2) and the first refractory unit (31), and a second refractory protection unit (9) being provided between the shell, the sealing cone support (2) and the second refractory unit (32).
10. The refractory lining structure as claimed in claim 9, characterized in that the material of the first refractory protection unit (8) is a soft insulating refractory and the material of the second refractory protection unit (9) is a ceramic fibre blanket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920172569.4U CN209857652U (en) | 2019-01-30 | 2019-01-30 | Refractory lining structure of high-temperature equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920172569.4U CN209857652U (en) | 2019-01-30 | 2019-01-30 | Refractory lining structure of high-temperature equipment |
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| CN209857652U true CN209857652U (en) | 2019-12-27 |
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| CN201920172569.4U Active CN209857652U (en) | 2019-01-30 | 2019-01-30 | Refractory lining structure of high-temperature equipment |
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