CN220749420U - Expansion joint - Google Patents
Expansion joint Download PDFInfo
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- CN220749420U CN220749420U CN202320694903.9U CN202320694903U CN220749420U CN 220749420 U CN220749420 U CN 220749420U CN 202320694903 U CN202320694903 U CN 202320694903U CN 220749420 U CN220749420 U CN 220749420U
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- monitoring
- pressure
- corrugated pipe
- fluid
- expansion joint
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- 238000012544 monitoring process Methods 0.000 claims abstract description 140
- 239000012530 fluid Substances 0.000 claims abstract description 77
- 230000008859 change Effects 0.000 claims abstract description 11
- 238000004891 communication Methods 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 8
- 230000000977 initiatory effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 10
- 230000008901 benefit Effects 0.000 abstract description 7
- 238000004146 energy storage Methods 0.000 description 17
- 239000000463 material Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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Abstract
The utility model discloses an expansion joint and a high-pressure pipeline using the expansion joint, wherein the expansion joint comprises an inner corrugated pipe, an outer corrugated pipe and a monitoring assembly, the outer corrugated pipe is sleeved on the outer side of the inner corrugated pipe, and the outer corrugated pipe is connected with the inner corrugated pipe to form a monitoring cavity between the inner corrugated pipe and the outer corrugated pipe; the monitoring assembly is arranged on the outer side of the outer corrugated pipe, monitoring fluid is arranged in the monitoring assembly, and the monitoring assembly is communicated with the monitoring cavity to monitor pressure change in the monitoring cavity so as to monitor leakage condition of the expansion joint. The expansion joint provided by the embodiment of the utility model has the advantages of timely detecting leakage of the expansion joint and good monitoring effect.
Description
Technical Field
The utility model relates to the technical field of pipeline equipment, in particular to an expansion joint.
Background
The expansion joint is a flexible element which can effectively play a role in compensating axial deformation, can expand and contract along the axial direction of the expansion joint to compensate the deformation of the pipeline along the axial direction of the expansion joint, is commonly used for connecting equipment in a high-temperature pipeline and/or a high-pressure pipeline, and is often damaged in structure due to material fatigue failure in the use process of the expansion joint, so that the normal operation of the pipeline is influenced. The expansion joint in the related art cannot timely monitor the leakage of the expansion joint or has poor monitoring effect.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems in the related art to some extent. Therefore, the embodiment of the utility model provides the expansion joint which has the advantages of timely detecting leakage of the expansion joint and good monitoring effect.
The expansion joint comprises an inner corrugated pipe and an outer corrugated pipe, wherein the outer corrugated pipe is sleeved on the outer side of the inner corrugated pipe, and the outer corrugated pipe is connected with the inner corrugated pipe to form a monitoring cavity between the inner corrugated pipe and the outer corrugated pipe; the monitoring assembly is arranged on the outer side of the outer corrugated pipe, monitoring fluid is arranged in the monitoring assembly, and the monitoring assembly is communicated with the monitoring cavity to monitor pressure change in the monitoring cavity by the monitoring assembly so as to monitor leakage condition of the expansion joint.
The expansion joint provided by the embodiment of the utility model has the advantages of timely detecting leakage of the expansion joint and good monitoring effect.
In some embodiments, the monitoring assembly includes an energy storage tank adapted to buffer pressure fluctuations within the monitoring assembly, the energy storage tank including a first port in communication with one end of the monitoring cavity and a second port in communication with the other end of the monitoring cavity.
In some embodiments, the monitoring assembly includes a first tube connected between the first port and one end of the outer bellows and a second tube connected between the second port and the other end of the outer bellows, the first tube having a first valve disposed thereon and the second tube having a second valve disposed thereon.
In some embodiments, a pressure gauge is provided on either of the first and second tubes to monitor the pressure of the fluid within the monitoring chamber.
In some embodiments, the pressure gauge is disposed in the first tube and the monitoring assembly includes a cooling jacket disposed between the pressure gauge and the first tube to reduce the temperature of fluid entering the pressure gauge.
In some embodiments, the expansion joint includes an alarm assembly coupled to the pressure gauge, the alarm assembly emitting a first alarm signal when the number of readings of the pressure gauge is greater than a first set pressure, and emitting a second alarm signal when the number of readings of the pressure gauge is less than a second set pressure.
In some embodiments, the first set pressure is less than the fluid pressure inside the inner bellows and greater than the fluid start pressure within the monitoring cavity, and the second set pressure is greater than the fluid pressure outside the outer bellows and less than the fluid start pressure within the monitoring cavity.
In some embodiments, the fluid initiation pressure within the monitoring assembly and the monitoring lumen is less than the fluid pressure inside the inner bellows and greater than the fluid pressure outside the outer bellows.
In some embodiments, the fluid pressure inside the inner bellows is less than either the safe pressure of the inner bellows or the safe pressure of the outer bellows.
Drawings
Fig. 1 is a schematic structural view of an expansion joint according to an embodiment of the present utility model.
Fig. 2 is an enlarged partial schematic view at a in fig. 1.
Reference numerals:
an outer bellows 11; an inner bellows 12;
a monitoring chamber 2;
a monitoring assembly 3; a pressure gauge 31; an energy storage tank 32; a first tube 33; a first valve 331; a second tube 34; a second valve 341; cooling jacket 35.
Detailed Description
Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.
An expansion joint according to an embodiment of the present utility model is described below with reference to fig. 1 and 2.
The expansion joint of the embodiment of the utility model comprises an inner bellows 12, an outer bellows 11 and a monitoring assembly 3.
The outer bellows 11 is sleeved outside the inner bellows 12, and the outer bellows 11 is connected with the inner bellows 12 to form the monitoring cavity 2 between the inner bellows 12 and the outer bellows 11.
Specifically, the inner bellows 12 and the outer bellows 11 extend coaxially, the inner bellows 12 and the outer bellows 11 can stretch and retract along the length direction thereof to adapt to thermal deformation in the pipeline, the inner bellows 12 is arranged in the outer bellows 11, one end of the outer bellows 11 is connected with one end of the inner bellows 12, the other end of the outer bellows 11 is connected with the other end of the inner bellows 12, so that the space on the outer periphery side of the inner bellows 12 is sealed to form the monitoring cavity 2, and any point on the inner bellows 12 is identical to the distance between the outer bellows 11, so that the thickness of the monitoring cavity 2 is identical everywhere.
The outside of outer bellows 11 is located to monitoring component 3, is equipped with the monitoring fluid in the monitoring component 3, and monitoring component 3 and monitoring chamber 2 intercommunication supply monitoring component 3 to monitor the pressure variation in the monitoring chamber 2 to the leakage condition of monitoring expansion joint.
Specifically, the monitoring chamber 2 is adapted to be filled with fluid, the fluid is sealed in the monitoring chamber 2, when the inner bellows 12 leaks, the pressure of the fluid in the monitoring chamber 2 changes to be the same as the pressure inside the inner bellows 12, and when the outer bellows 11 leaks, the pressure of the fluid in the monitoring chamber 2 changes to be the same as the pressure outside the outer bellows 11.
The monitoring component 3 is arranged on the outer side of the outer corrugated pipe 11 and is communicated with the monitoring cavity 2 to monitor the fluid pressure change in the monitoring cavity 2, so that whether leakage occurs to the expansion joint and what kind of leakage occurs can be known according to the fluid pressure change in the monitoring cavity 2, and the monitoring component 3 is arranged on the outer side of the outer corrugated pipe 11 to avoid influencing the normal operation of the monitoring component 3 when the temperature of the outer corrugated pipe 11 is too high.
According to the expansion joint provided by the embodiment of the utility model, the outer corrugated pipe 11 is sleeved on the periphery of the inner corrugated pipe 12, the monitoring cavity 2 is formed between the outer corrugated pipe 11 and the inner corrugated pipe 12, the monitoring component 3 outside the outer corrugated pipe 11 is used for detecting the pressure change in the monitoring cavity 2, so that whether and what kind of leakage occurs in the expansion joint of the embodiment of the utility model can be known, and the monitoring component 3 is arranged outside the outer corrugated pipe 11, so that on one hand, the damage of the monitoring component 3 when the inner corrugated pipe 12 or the outer corrugated pipe 11 breaks down can be avoided, on the other hand, the influence of the temperature change of the inner corrugated pipe 12 and the outer corrugated pipe 11 on the monitoring component 3 is reduced, the detection effect of the expansion joint of the embodiment of the utility model is improved, and the expansion joint of the embodiment of the utility model has the advantages that the leakage and the monitoring effect of the expansion joint can be detected timely.
In some embodiments, the monitoring assembly 3 comprises an energy storage tank 32, the energy storage tank 32 being adapted to buffer pressure fluctuations within the monitoring assembly 3, the energy storage tank 32 comprising a first port in communication with one end of the monitoring chamber 2 and a second port in communication with the other end of the monitoring chamber 2.
Specifically, the energy storage tank 32 is arranged on the outer side of the outer corrugated pipe 11, and the inner cavity of the energy storage tank 32 is communicated with the monitoring cavity 2, when the fluid pressure in the monitoring cavity 2 is suddenly changed, the fluid pressure in the monitoring cavity 2 can be transferred to the energy storage tank 32, so that the fluid pressure change in the monitoring cavity 2 is delayed, and the pressure detection equipment is prevented from being damaged by the sudden change of the pressure in the monitoring cavity 2.
The energy storage tank 32 is provided with a first port and a second port, the first port is connected with one end of the monitoring cavity 2 along the length direction of the monitoring cavity, and the second port is connected with the other end of the monitoring cavity 2 along the length direction of the monitoring cavity, so that on one hand, the energy storage tank 32 is not connected with the middle section of the monitoring cavity 2 to reduce the influence on the outer corrugated pipe 11, and on the other hand, the energy storage tank 32 is connected with the monitoring cavity 2 through the first port and the second port, so that the buffer effect of the energy storage tank 32 can be improved, the damage of the monitoring assembly 3 is avoided, and the expansion joint provided by the embodiment of the utility model has the advantages that the leakage of the expansion joint and the good monitoring effect can be timely detected.
In some embodiments, the monitoring assembly 3 comprises a first tube 33 and a second tube 34, the first tube 33 being connected between the first port and one end of the outer bellows 11, the second tube 34 being connected between the second port and the other end of the outer bellows 11, the first tube 33 being provided with a first valve 331, the second tube 34 being provided with a second valve 341.
Specifically, one end of the first tube 33 is connected to the first port of the tank 32, the other end of the first tube 33 is connected to one end of the outer bellows 11 for the tank 32 to communicate with the monitoring chamber 2 through the first tube 33, one end of the second tube 34 is connected to the second port of the tank 32, and the other end of the second tube 34 is connected to the other end of the outer bellows 11 for the tank 32 to communicate with the monitoring chamber 2 through the second tube 34.
The first pipe 33 is provided with a first valve 331, the second pipe 34 is provided with a second valve 341, and the on-off between the monitoring cavity 2 and the energy storage tank 32 can be realized by closing the first valve 331 and the second valve 341, so that the outer corrugated pipe 11 and the inner corrugated pipe 12 can still work normally when the monitoring assembly 3 is maintained.
In some embodiments, a pressure gauge 31 is provided on either of the first tube 33 and the second tube 34 to monitor the pressure of the fluid within the monitoring chamber 2.
Specifically, the pressure gauge 31 is disposed on a side of the first valve 331 near the energy storage tank 32, or the pressure gauge 31 is disposed on a side of the second valve 341 near the energy storage tank 32, and the pressure gauge 31 is in communication with the monitoring chamber 2 through the first pipe 33 or the second pipe 34 to monitor the pressure change in the monitoring chamber 2.
In some embodiments, the pressure gauge 31 is provided to the first tube 33, and the monitoring assembly 3 includes a cooling jacket 35, the cooling jacket 35 being provided between the pressure gauge 31 and the first tube 33 to reduce the temperature of the fluid entering the pressure gauge 31.
Specifically, the pressure sensing element of the pressure gauge 31 communicates with the inner cavity of the first tube 33 to detect the pressure change in the monitoring chamber 2 through the first tube 33, and the cooling jacket 35 is provided between the pressure sensing element and the inner cavity of the first tube 33, and when the fluid in the first tube 33 flows to the pressure gauge 31, the cooling jacket 35 absorbs heat in the fluid to reduce the temperature of the fluid flowing from the first tube 33 to the pressure gauge 31.
Therefore, the cooling sleeve 35 is arranged between the pressure gauge 31 and the first pipe 33, so that the high-temperature fluid in the first pipe 33 is prevented from affecting the working of the pressure gauge 31 or damaging the pressure gauge 31, the reliability of the measurement of the pressure gauge 31 is further improved, and the expansion joint provided by the embodiment of the utility model has the advantage of good monitoring effect.
In some embodiments, the expansion joint includes an alarm assembly coupled to the pressure gauge 31 that emits a first alarm signal when the gauge 31 gauge number is greater than a first set pressure and emits a second alarm signal when the gauge 31 gauge number is less than a second set pressure.
Specifically, the alarm assembly is electrically connected or communicatively connected to the pressure gauge 31 to obtain the pressure parameter read by the pressure sensing element of the pressure gauge 31, where the first set pressure is an upper limit value of the fluid pressure in the monitoring cavity 2 when the inner bellows 12 and the outer bellows 11 are operating normally, when the fluid pressure in the monitoring cavity 2 is greater than the first set pressure, it indicates that the fluid inside the inner bellows 12 is leaked into the monitoring cavity 2, the second set pressure is a lower limit value of the fluid pressure in the monitoring cavity 2 when the inner bellows 12 and the outer bellows 11 are operating normally, and when the fluid pressure in the monitoring cavity 2 is less than the second set pressure, it indicates that the fluid inside the outer bellows 11 is leaked out of the monitoring cavity 2.
Thus, when the pressure gauge 31 detects that the pressure in the monitoring chamber 2 is too high, the alarm assembly emits an alarm signal of the leakage of the inner bellows 12, and when the pressure gauge 31 detects that the pressure in the monitoring chamber 2 is reduced, the alarm assembly emits an alarm signal of the leakage of the outer bellows 11.
In some embodiments, the first set pressure is less than the fluid pressure inside the inner bellows 12 and greater than the fluid start pressure within the monitoring chamber 2, and the second set pressure is greater than the fluid pressure outside the outer bellows 11 and less than the fluid start pressure within the monitoring chamber 2.
Specifically, the fluid initial pressure in the monitoring cavity 2 is the pressure of the fluid filled into the energy storage tank 32 and/or the monitoring cavity 2, the first set pressure is the upper limit value of the fluid pressure in the monitoring cavity 2 when the inner corrugated pipe 12 and the outer corrugated pipe 11 are in normal operation, the fluid pressure in the monitoring cavity 2 is always smaller than the first set pressure when the inner corrugated pipe 12 and the outer corrugated pipe 11 are in normal operation, when the fluid pressure in the monitoring cavity 2 is larger than the first set pressure, the leakage of the inner corrugated pipe 12 is indicated to cause the fluid inside the inner corrugated pipe 12 to enter the monitoring cavity 2, the second set pressure is the lower limit value of the fluid pressure in the monitoring cavity 2 when the inner corrugated pipe 12 and the outer corrugated pipe 11 are in normal operation, and when the fluid pressure in the monitoring cavity 2 is smaller than the second set pressure, the leakage of the outer corrugated pipe 11 is indicated to cause the fluid inside the monitoring cavity 2 to leak to the outer side of the outer corrugated pipe 11.
In some embodiments, the fluid initiation pressure within the monitoring assembly 3 and monitoring chamber 2 is less than the fluid pressure inside the inner bellows 12 and greater than the fluid pressure outside the outer bellows 11. Specifically, the fluid starting pressure within the monitoring chamber 2 is the pressure of the fluid charged into the tank 32 and/or the monitoring chamber 2.
The first set pressure is the upper limit value of the fluid pressure in the monitoring cavity 2 when the inner corrugated pipe 12 and the outer corrugated pipe 11 work normally, the fluid pressure in the monitoring cavity 2 is always smaller than the first set pressure, and when the fluid pressure in the monitoring cavity 2 is larger than the first set pressure, the inner corrugated pipe 12 is indicated to leak, so that the fluid in the inner side of the inner corrugated pipe 12 enters the monitoring cavity 2.
The second set pressure is the lower limit value of the fluid pressure in the monitoring cavity 2 when the inner corrugated pipe 12 and the outer corrugated pipe 11 work normally, the fluid pressure in the monitoring cavity 2 is always larger than the second set pressure when the inner corrugated pipe 12 and the outer corrugated pipe 11 work normally, and when the fluid pressure in the monitoring cavity 2 is smaller than the second set pressure, the leakage of the outer corrugated pipe 11 is indicated to cause the fluid in the monitoring cavity 2 to leak to the outer side of the outer corrugated pipe 11.
In some embodiments, the fluid pressure inside the inner bellows 12 is less than either the safe pressure of the inner bellows 12 or the safe pressure of the outer bellows 11.
Specifically, the safety pressure of the inner bellows 12 is the maximum pressure of the fluid inside the inner bellows 12 when no structural damage occurs to the inner bellows 12, and the safety pressure of the outer bellows 11 is the maximum pressure of the fluid inside the outer bellows 11 when no structural damage occurs to the outer bellows 11.
The inside of the inner bellows 12 communicates with the pipe to flow high-temperature and high-pressure fluid, and either the safety pressure of the inner bellows 12 or the safety pressure of the outer bellows 11 is greater than the fluid pressure flowing inside the inner bellows 12.
Therefore, when any one of the inner corrugated pipe 12 and the outer corrugated pipe 11 leaks, the other one of the inner corrugated pipe 12 and the outer corrugated pipe 11 can effectively prevent high-temperature and high-pressure fluid in the pipeline from flowing out of the expansion joint of the embodiment of the utility model, so that the expansion joint of the embodiment of the utility model has the advantage of better leakage prevention effect.
In the description of the present utility model, it should 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", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean 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 utility model. In this specification, schematic representations of the above terms are not necessarily directed 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, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While the above embodiments have been shown and described, it should be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives, and variations of the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the utility model.
Claims (9)
1. An expansion joint, comprising:
the outer corrugated pipe is sleeved on the outer side of the inner corrugated pipe, and the outer corrugated pipe is connected with the inner corrugated pipe to form a monitoring cavity between the inner corrugated pipe and the outer corrugated pipe;
the monitoring assembly is arranged on the outer side of the outer corrugated pipe, monitoring fluid is arranged in the monitoring assembly, and the monitoring assembly is communicated with the monitoring cavity to monitor pressure change in the monitoring cavity by the monitoring assembly so as to monitor leakage condition of the expansion joint.
2. The expansion joint of claim 1, wherein the monitoring assembly comprises an accumulator tank adapted to buffer pressure fluctuations within the monitoring assembly, the accumulator tank comprising a first port in communication with one end of the monitoring cavity and a second port in communication with the other end of the monitoring cavity.
3. The expansion joint of claim 2, wherein the monitoring assembly comprises a first tube connected between the first port and one end of the outer bellows and a second tube connected between the second port and the other end of the outer bellows, the first tube having a first valve and the second tube having a second valve.
4. An expansion joint according to claim 3, wherein a pressure gauge is provided on either of the first and second pipes to monitor the pressure of the fluid in the monitoring chamber.
5. The expansion joint of claim 4, wherein the pressure gauge is disposed in the first tube, and the monitoring assembly includes a cooling jacket disposed between the pressure gauge and the first tube to reduce the temperature of fluid entering the pressure gauge.
6. The expansion joint of claim 4, comprising an alarm assembly coupled to the pressure gauge, the alarm component sends out a first alarm signal when the indication number of the pressure gauge is larger than a first set pressure, and sends out a second alarm signal when the indication number of the pressure gauge is smaller than a second set pressure.
7. The expansion joint of claim 6, wherein the first set pressure is less than the fluid pressure inside the inner bellows and greater than the fluid start pressure within the monitoring chamber and the second set pressure is greater than the fluid pressure outside the outer bellows and less than the fluid start pressure within the monitoring chamber.
8. The expansion joint of any of claims 1-7, wherein a fluid initiation pressure within the monitoring assembly and the monitoring chamber is less than a fluid pressure inside the inner bellows and greater than a fluid pressure outside the outer bellows.
9. The expansion joint according to claim 8, wherein the fluid pressure inside the inner bellows is less than either the safety pressure of the inner bellows or the safety pressure of the outer bellows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320694903.9U CN220749420U (en) | 2023-03-31 | 2023-03-31 | Expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320694903.9U CN220749420U (en) | 2023-03-31 | 2023-03-31 | Expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220749420U true CN220749420U (en) | 2024-04-09 |
Family
ID=90550085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320694903.9U Active CN220749420U (en) | 2023-03-31 | 2023-03-31 | Expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220749420U (en) |
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2023
- 2023-03-31 CN CN202320694903.9U patent/CN220749420U/en active Active
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