CN216046120U - Sliding sleeve telescopic expansion joint - Google Patents
Sliding sleeve telescopic expansion joint Download PDFInfo
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- CN216046120U CN216046120U CN202122055259.4U CN202122055259U CN216046120U CN 216046120 U CN216046120 U CN 216046120U CN 202122055259 U CN202122055259 U CN 202122055259U CN 216046120 U CN216046120 U CN 216046120U
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Abstract
The utility model discloses a sliding sleeve telescopic expansion joint, which is characterized in that: comprises a first connecting pipe, a second connecting pipe, a first high-temperature-resistant sleeve, a second high-temperature-resistant sleeve and an outer curved ring; the first high-temperature-resistant sleeve is fixedly connected with the end part of the first connecting pipe, and the second high-temperature-resistant sleeve is fixedly connected with the end part of the second connecting pipe; the first high-temperature-resistant sleeve and the second high-temperature-resistant sleeve are sleeved in a sliding manner; the first high-temperature resistant sleeve and the second high-temperature resistant sleeve are sleeved outside the outer curved ring; one end of the outer curved opening ring is fixedly connected with the first high-temperature-resistant sleeve or/and the first connecting pipe, and the other end of the outer curved opening ring is fixedly connected with the second high-temperature-resistant sleeve or/and the second connecting pipe; the middle part of the cross section of the outer curved ring is in a C shape. The utility model can be arranged at the joint of the pipe orifice of high-temperature equipment (decomposing furnace), can eliminate the equipment damage caused by expansion caused by heat and contraction caused by cold, and can effectively ensure the long-term normal operation of the equipment in a thermal state.
Description
Technical Field
The utility model relates to a sliding sleeve telescopic expansion joint.
Background
Referring to fig. 1-2, an expansion joint of the prior art is shown. The expansion joint is used for effectively playing a role in compensating axial deformation, is arranged at the joint of the pipe orifice of high-temperature equipment (decomposing furnace), and can solve the problem that the joint is deformed or leaks gas due to expansion with heat and contraction with cold caused by high temperature. And the expansion joint comprises two connection pipes (N-1, N-2) and a bellows (N-3) for connecting the two connection pipes (N-1, N-2). However, the following problems and disadvantages are found in long-term use: because the pipeline of the whole production equipment is provided with a plurality of joints, a large number of expansion joints are needed, the corrugated pipe can compensate relative deformation caused by high temperature and cooling of the two connecting pipes, but the deformation of the corrugated pipe is too large, axial bending exists after long-term use, the corrugated pipe cannot be reset, the concentricity (shown in figure 2) of the two connecting pipes at the joints is influenced, the adjacent connecting equipment is seriously dislocated, and the equipment is easily damaged.
SUMMERY OF THE UTILITY MODEL
In order to solve one or more of the above-mentioned problems of the prior art, the present invention provides a sliding sleeve telescopic expansion joint.
In order to achieve the purpose, the utility model provides a sliding sleeve telescopic expansion joint which is characterized in that: comprises a first connecting pipe (1), a second connecting pipe (2), a first high-temperature-resistant sleeve (3), a second high-temperature-resistant sleeve (4) and an outer curved ring (5); the first high-temperature-resistant sleeve (3) is fixedly connected with the end part of the first connecting pipe (1), and the second high-temperature-resistant sleeve (4) is fixedly connected with the end part of the second connecting pipe (2); the first high-temperature-resistant sleeve (3) and the second high-temperature-resistant sleeve (4) are sleeved in a sliding way; the outer curved ring (5) is sleeved on the first high-temperature-resistant sleeve (3) and the second high-temperature-resistant sleeve (4); one end of the outer curved opening ring (5) is fixedly connected with the first high-temperature-resistant sleeve (3) or/and the first connecting pipe (1), and the other end of the outer curved opening ring (5) is fixedly connected with the second high-temperature-resistant sleeve (4) or/and the second connecting pipe (2); the middle part of the cross section of the outer curved ring (5) is C-shaped.
By adopting the scheme, the first high-temperature-resistant sleeve (3) and the second high-temperature-resistant sleeve (4) are high-temperature-resistant and cannot deform, and meanwhile, the first high-temperature-resistant sleeve (3) and the second high-temperature-resistant sleeve (4) are sleeved in a sliding manner; when the connecting pipes (the first connecting pipe (1) and the second connecting pipe (2)) on the two devices deform at high temperature, the first high-temperature-resistant sleeve (3) and the second high-temperature-resistant sleeve (4) slide axially relative to each other to compensate for the telescopic deformation caused by the height of the absorption pipeline, the connecting pipes (the first connecting pipe (1) and the second connecting pipe (2)) on the two devices can be prevented from generating relative bending deformation, the serious dislocation of the adjacent connecting devices is avoided, the device damage caused by thermal expansion and cold contraction can be eliminated, and the long-term normal operation of the devices in a thermal state can be effectively guaranteed. In addition, because the middle part of the cross section of the outer curved tension ring (5) is C-shaped, when the first high temperature resistant sleeve (3) and the second high temperature resistant sleeve (4) slide relatively, the C-shaped part of the outer curved tension ring (5) deforms along with the first high temperature resistant sleeve and the second high temperature resistant sleeve, the outer sealing of the gap between the first high temperature resistant sleeve (3) and the second high temperature resistant sleeve (4) can be ensured, a certain connecting and supporting effect can be achieved, and the problem of smoke leakage can be solved; meanwhile, the outer curved ring (5) only needs to be provided with a single deformation part, which is equivalent to a corrugated pipe in the prior art that the deformation part is composed of a plurality of bending sections, so that the design structure is simpler, and the cost is lower.
Furthermore, the first connecting pipe (1) and the second connecting pipe (2) are respectively arranged up and down; the upper end of the second connecting pipe (2) is provided with a taper pipe part (2-1), and the taper pipe part (2-1) has a large upper part and a small lower part; the second high-temperature-resistant sleeve (4) is conical, the lower part is large, and the upper part is small, and the upper end of the conical pipe part (2-1) is fixedly connected with the lower end of the second high-temperature-resistant sleeve (4). By adopting the structural design, the taper pipe part (2-1) of the second connecting pipe (2) and the second high-temperature-resistant sleeve (4) form a reducing pipeline, the middle of the reducing pipeline is large, and the two ends of the reducing pipeline are small; so as to form a small upper and lower necking size and a large middle size; when the device is applied, the structural design of the section of flue can play an active role in ventilating the kiln, keeping flame smooth and stabilizing the system, reducing secondary dust, reducing crusting, improving the quality of clinker and the like; meanwhile, the material powder is favorably collided and stalled at the position to form a spouting effect, so that the movement speed of the material powder lags behind the airflow and the retention time of the material powder in the furnace is prolonged.
Furthermore, the aperture of the inner hole at the lower end of the second connecting pipe (2) is equal to that of the inner hole of the first high-temperature-resistant sleeve (3); the first high-temperature-resistant sleeve (3) is cylindrical, the inner diameter of the upper end of the second high-temperature-resistant sleeve (4) is a straight hole (4-1), and the first high-temperature-resistant sleeve (3) is in clearance fit with the straight hole (4-1). The section of the first high-temperature-resistant sleeve (3) and the section of the second connecting pipe (2) are the same, the smoke exhaust speed is equal, and high pressure is prevented from being formed.
Further, in a normal state, the lower end surface (3-1) of the first high-temperature-resistant sleeve (3) is flush with the inner conical surface (4-2) of the second high-temperature-resistant sleeve (4).
Further, the first connecting pipe (1) is used for connecting with a cement decomposing furnace, and the second connecting pipe (2) is used for connecting with a smoke chamber.
Furthermore, two ends of the outer curved tension ring (5) are provided with two I-shaped embedding parts (5-1), the two I-shaped embedding parts (5-1) are respectively embedded on the first high-temperature-resistant sleeve (3) and the second high-temperature-resistant sleeve (4), so that the outer curved tension ring (5) and the first high-temperature-resistant sleeve (3) and the second high-temperature-resistant sleeve (4) can be ensured to be fixed into a whole, and the two ends of the outer curved tension ring (5) are not easy to loosen and leak.
Preferably, the outer curved ring (5) is made of stainless steel. The support structure can provide certain rigid support under normal and high temperature conditions, and the middle part of the support structure in a C shape can also be deformed along with the deformation to offset relative displacement when the support structure is subjected to high-temperature expansion deformation.
Furthermore, an access door or a transparent observation window (6) is arranged on the second high-temperature-resistant sleeve (4). Can be convenient for observation and maintenance.
Preferably, the first high-temperature-resistant sleeve (3) or/and the second high-temperature-resistant sleeve (4) is/are made of a refractory castable material.
The utility model has the beneficial effects that:
firstly, the first high-temperature-resistant sleeve and the second high-temperature-resistant sleeve are high-temperature-resistant and cannot deform, and the first high-temperature-resistant sleeve and the second high-temperature-resistant sleeve can be sleeved in a sliding mode; when the first connecting pipe and the second connecting pipe of the connecting pipes on the two devices are deformed at high temperature, the first high-temperature-resistant sleeve and the second high-temperature-resistant sleeve axially slide relatively to compensate and absorb the height of the pipeline to cause telescopic deformation, and the connecting pipes (the first connecting pipe and the second connecting pipe) on the two devices can be prevented from generating relative bending deformation, so that the serious dislocation of the adjacent connecting devices can be avoided, the device damage caused by thermal expansion and cold contraction can be eliminated, and the long-term normal operation of the devices in a thermal engineering state can be effectively ensured;
secondly, the middle part of the cross section of the outer curved ring is in a C shape, when the first high-temperature-resistant sleeve and the second high-temperature-resistant sleeve slide relatively, the C-shaped part of the outer curved ring deforms along with the first high-temperature-resistant sleeve and the second high-temperature-resistant sleeve, so that the outer sealing of the gap between the first high-temperature-resistant sleeve and the second high-temperature-resistant sleeve can be ensured, a certain connecting and supporting effect can be realized, and the problem of smoke leakage can be solved;
thirdly, the outer curved ring only needs to be provided with a single deformation part, which is equivalent to the corrugated pipe in the prior art, wherein the deformation part is formed by a plurality of bending sections, so that the design structure is simpler, and the cost is lower;
fourthly, the taper pipe part of the second connecting pipe and the second high-temperature-resistant sleeve form a reducing pipeline, the middle of the reducing pipeline is large, and the two ends of the reducing pipeline are small; so as to form a small upper and lower necking size and a large middle size; when the device is applied, the structural design of the section of flue can play an active role in ventilating the kiln, keeping flame smooth and stabilizing the system, reducing secondary dust, reducing crusting, improving the quality of clinker and the like; meanwhile, the material powder is favorably collided and stalled at the position to form a spouting effect, so that the movement speed of the material powder lags behind the airflow and the retention time of the material powder in the furnace is prolonged.
Drawings
Fig. 1 is a schematic view of the structure of an expansion joint of the prior art.
Fig. 2 is a schematic structural view of a prior expansion joint.
FIG. 3 is a schematic structural view of a sliding sleeve telescopic expansion joint according to an embodiment of the present invention.
FIG. 4 is a schematic structural view of a sliding sleeve telescopic expansion joint according to an embodiment of the present invention in practical use.
FIG. 5 is a schematic structural view of a sliding sleeve telescopic expansion joint according to a second embodiment of the present invention.
Detailed Description
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
the first embodiment is as follows: referring to fig. 3-4, a sliding sleeve telescopic expansion joint comprises a first connecting pipe 1, a second connecting pipe 2, a first high temperature resistant sleeve 3, a second high temperature resistant sleeve 4 and an outer curved ring 5; the first high temperature resistant sleeve 3 is fixedly connected with the end part of the first connecting pipe 1, and the second high temperature resistant sleeve 4 is fixedly connected with the end part of the second connecting pipe 2; the first high temperature resistant sleeve 3 and the second high temperature resistant sleeve 4 can be sleeved in a sliding way; the outer curved ring 5 is sleeved on the first high-temperature-resistant sleeve 3 and the second high-temperature-resistant sleeve 4; one end of the outer curved ring 5 is fixedly connected with the first high-temperature-resistant sleeve 3 or/and the first connecting pipe 1, and the other end of the outer curved ring 5 is fixedly connected with the second high-temperature-resistant sleeve 4 or/and the second connecting pipe 2; the middle part of the cross section of the outer curved ring 5 is C-shaped.
When the utility model is used, the first high temperature resistant sleeve 3 and the second high temperature resistant sleeve 4 are high temperature resistant and can not deform, and the first high temperature resistant sleeve 3 and the second high temperature resistant sleeve 4 can be sleeved in a sliding way; when the first connecting pipe 1 and the second connecting pipe 2 of the connecting pipes on the two devices are deformed at high temperature, the first high-temperature-resistant sleeve 3 and the second high-temperature-resistant sleeve 4 axially slide relatively to compensate the telescopic deformation caused by the height of the absorption pipeline, and the connecting pipes (the first connecting pipe 1 and the second connecting pipe 2) on the two devices can be prevented from generating relative bending deformation, so that the serious dislocation of the adjacent connecting devices is avoided, the damage of the devices caused by thermal expansion and cold contraction can be eliminated, and the long-term normal operation of the devices in a thermal state can be effectively guaranteed. In addition, because the middle part of the cross section of the outer curved ring 5 is C-shaped, when the first high temperature resistant sleeve 3 and the second high temperature resistant sleeve 4 slide relatively, the C-shaped part of the outer curved ring 5 deforms along with the first high temperature resistant sleeve 3, so that the outer sealing of the gap between the first high temperature resistant sleeve 3 and the second high temperature resistant sleeve 4 can be ensured, a certain connecting and supporting effect can be realized, and the problem of smoke leakage can be solved; meanwhile, the outer curved ring 5 only needs to be provided with a single deformation part, which is equivalent to the corrugated pipe in the prior art that the deformation part is composed of a plurality of bending sections, so that the design structure is simpler, and the cost is lower.
Further, the first connecting pipe 1 and the second connecting pipe 2 are respectively arranged up and down; the upper end of the second connecting pipe 2 is provided with a taper pipe part 2-1, and the taper pipe part 2-1 is big at the top and small at the bottom; the second high temperature resistant sleeve 4 is conical and has a large lower end and a small upper end, and the upper end of the conical pipe part 2-1 is fixedly connected with the lower end of the second high temperature resistant sleeve 4. By adopting the structural design, the taper pipe part 2-1 of the second connecting pipe 2 and the second high-temperature-resistant sleeve 4 form a reducing pipeline, the middle part is large, and the two ends are small; so as to form a small upper and lower necking size and a large middle size; when the device is applied, the structural design of the section of flue can play an active role in ventilating the kiln, keeping flame smooth and stabilizing the system, reducing secondary dust, reducing crusting, improving the quality of clinker and the like; meanwhile, the material powder is favorably collided and stalled at the position to form a spouting effect, so that the movement speed of the material powder lags behind the airflow and the retention time of the material powder in the furnace is prolonged.
Further, the aperture of the inner hole at the lower end of the second connecting pipe 2 is equal to the aperture of the inner hole of the first high-temperature-resistant sleeve 3; the first high-temperature-resistant sleeve 3 is cylindrical, the inner diameter of the upper end of the second high-temperature-resistant sleeve 4 is a straight hole 4-1, and the first high-temperature-resistant sleeve 3 is in clearance fit with the straight hole 4-1. The first high temperature resistant sleeve 3 and the second connecting pipe 2 can be ensured to have the same section, the smoke exhaust speed is equal, and the formation of high pressure is avoided.
Further, in a normal state, the lower end surface 3-1 of the first high-temperature resistant sleeve 3 is flush with the inner conical surface 4-2 of the second high-temperature resistant sleeve 4. When in normal use, the surface is level, so that the air is smoothly exhausted, the powder dust is prevented from being stuck and the crusting is reduced.
In practice, the first connection pipe 1 is used for connection to a cement decomposing furnace and the second connection pipe 2 is used for connection to a smoke chamber, see fig. 4.
Preferably, the outer ring 5 is made of stainless steel. The support structure can provide certain rigid support under normal and high temperature conditions, and the middle part of the support structure in a C shape can also be deformed along with the deformation to offset relative displacement when the support structure is subjected to high-temperature expansion deformation.
Further, an access door or a transparent observation window 6 is arranged on the second high-temperature-resistant sleeve 4. Can be convenient for observation and maintenance.
Preferably, the first refractory sheath 3 and/or the second refractory sheath 4 are made of a refractory castable material.
Example two: this embodiment is substantially the same as the first embodiment, except that:
in this embodiment, two ends of the outer curved ring 5 are provided with two i-shaped caulking portions 5-1, and the two i-shaped caulking portions 5-1 are respectively embedded on the first high temperature resistant sleeve 3 and the second high temperature resistant sleeve 4. Can guarantee that this outer bent ring 5 is fixed as an organic whole with first high temperature resistant cover 3 and second high temperature resistant cover 4 and can bear and keep the steady support when the big deformation, also should not loosen, can not run and fall the water clock at 5 both ends of this outer bent ring simultaneously.
The foregoing detailed description of the preferred embodiments of the utility model has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (9)
1. A sliding sleeve telescopic expansion joint is characterized in that: comprises a first connecting pipe (1), a second connecting pipe (2), a first high-temperature-resistant sleeve (3), a second high-temperature-resistant sleeve (4) and an outer curved ring (5);
the first high-temperature-resistant sleeve (3) is fixedly connected with the end part of the first connecting pipe (1), and the second high-temperature-resistant sleeve (4) is fixedly connected with the end part of the second connecting pipe (2);
the first high-temperature-resistant sleeve (3) and the second high-temperature-resistant sleeve (4) are sleeved in a sliding way;
the outer curved ring (5) is sleeved on the first high-temperature-resistant sleeve (3) and the second high-temperature-resistant sleeve (4);
one end of the outer curved opening ring (5) is fixedly connected with the first high-temperature-resistant sleeve (3) or/and the first connecting pipe (1), and the other end of the outer curved opening ring (5) is fixedly connected with the second high-temperature-resistant sleeve (4) or/and the second connecting pipe (2);
the middle part of the cross section of the outer curved ring (5) is C-shaped.
2. The sliding sleeve telescopic expansion joint of claim 1, wherein: the first connecting pipe (1) and the second connecting pipe (2) are respectively arranged up and down; the upper end of the second connecting pipe (2) is provided with a taper pipe part (2-1), and the taper pipe part (2-1) has a large upper part and a small lower part; the second high-temperature-resistant sleeve (4) is conical, the lower part is large, and the upper part is small, and the upper end of the conical pipe part (2-1) is fixedly connected with the lower end of the second high-temperature-resistant sleeve (4).
3. The sliding sleeve telescopic expansion joint of claim 2, wherein: the aperture of the inner hole at the lower end of the second connecting pipe (2) is equal to that of the inner hole of the first high-temperature-resistant sleeve (3); the first high-temperature-resistant sleeve (3) is cylindrical, the inner diameter of the upper end of the second high-temperature-resistant sleeve (4) is a straight hole (4-1), and the first high-temperature-resistant sleeve (3) is in clearance fit with the straight hole (4-1).
4. A sliding sleeve telescopic expansion joint as claimed in claim 2 or 3, wherein: in a normal state, the lower end surface (3-1) of the first high-temperature resistant sleeve (3) is flush with the inner conical surface (4-2) of the second high-temperature resistant sleeve (4).
5. A sliding sleeve telescopic expansion joint according to any one of claims 1 to 3, wherein: the first connecting pipe (1) is used for being connected with a cement decomposing furnace, and the second connecting pipe (2) is used for being connected with a smoke chamber.
6. A sliding sleeve telescopic expansion joint according to any one of claims 1 to 3, wherein: two ends of the outer curved ring (5) are provided with two I-shaped embedding parts (5-1), and the two I-shaped embedding parts (5-1) are respectively embedded on the first high-temperature-resistant sleeve (3) and the second high-temperature-resistant sleeve (4).
7. The sliding sleeve telescopic expansion joint of claim 1, wherein: the outer curved ring (5) is made of stainless steel.
8. The sliding sleeve telescopic expansion joint of claim 1, wherein: an access door or a transparent observation window (6) is arranged on the second high-temperature-resistant sleeve (4).
9. A sliding sleeve telescopic expansion joint according to any one of claims 1 to 3 or 7 to 8, wherein: the first high-temperature-resistant sleeve (3) or/and the second high-temperature-resistant sleeve (4) is/are made of refractory castable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122055259.4U CN216046120U (en) | 2021-08-30 | 2021-08-30 | Sliding sleeve telescopic expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122055259.4U CN216046120U (en) | 2021-08-30 | 2021-08-30 | Sliding sleeve telescopic expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216046120U true CN216046120U (en) | 2022-03-15 |
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ID=80622436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122055259.4U Active CN216046120U (en) | 2021-08-30 | 2021-08-30 | Sliding sleeve telescopic expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216046120U (en) |
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2021
- 2021-08-30 CN CN202122055259.4U patent/CN216046120U/en active Active
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