CN219198505U - Corrosion-resistant, high-temperature-resistant and negative-pressure-resistant corrugated compensator - Google Patents
Corrosion-resistant, high-temperature-resistant and negative-pressure-resistant corrugated compensator Download PDFInfo
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- CN219198505U CN219198505U CN202223572441.8U CN202223572441U CN219198505U CN 219198505 U CN219198505 U CN 219198505U CN 202223572441 U CN202223572441 U CN 202223572441U CN 219198505 U CN219198505 U CN 219198505U
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- corrugated pipe
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- loose flange
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Flanged Joints, Insulating Joints, And Other Joints (AREA)
Abstract
The utility model discloses a corrosion-resistant, high-temperature-resistant and negative pressure-resistant corrugated compensator, which is characterized in that: comprises a stud, an adjusting nut, a loose flange, a negative pressure connecting pipe, a stainless steel metal corrugated pipe and a fluoroplastic corrugated pipe; the outer part of the fluoroplastic corrugated pipe is compounded with an austenitic stainless steel metal corrugated pipe; the two compensators are respectively sleeved on straight pipe sections at two ends of the stainless steel corrugated pipe by loose flange, and flanges at two ends of the corrugated pipe compounded by the stainless steel corrugated pipe and the polytetrafluoroethylene corrugated pipe with the inner lining are tightly attached to and completely cover the sealing surface of the loose flange; three circular limit bolt holes are uniformly distributed on the outer ring of the loose flange, studs penetrate through the limit bolt holes on the outer side of the loose flange, and four adjusting nuts on the studs are distributed on two sides of the two loose flanges; the same stud nuts are uniformly distributed on the loose flange. The compensator of the utility model can be used for a long time in a high-temperature corrosion environment below 260 ℃ and under various negative pressures.
Description
Technical Field
The utility model relates to a corrosion-resistant, high-temperature-resistant and negative-pressure-resistant corrugated compensator, and belongs to the field of transportation of highly corrosive media.
Background
In the industries of explosives, chemical engineering, environmental protection, metallurgy and the like, in order to compensate for strong corrosion and expansion and contraction of pipelines and equipment operated by negative pressure, a large number of corrugated compensators which are high-temperature resistant, negative pressure resistant and corrosion resistant are required to be used. When using mediums such as sulfuric acid, nitric acid, hydrochloric acid or nitre sulfur mixed acid of strong corrosivity, along with the increase of service temperature, the ripple compensator of metal is difficult to be corroded, and the ripple compensator of polytetrafluoroethylene preparation more than 150 ℃ becomes soft, and intensity decline, and car system polytetrafluoroethylene compensator and polytetrafluoroethylene cladding steel ring skeleton compensator when the diameter is great, under the vacuum effect, inhale flat deformation, makes production interrupt, is difficult to satisfy the user demand. In order to meet the use requirement, a corrosion-resistant, high-temperature and negative pressure-resistant corrugated compensator is developed.
Disclosure of Invention
The utility model aims to solve the problems of poor corrosion resistance, easy deformation and the like of the traditional corrugated compensator, and provides a corrosion-resistant, high-temperature-resistant and negative pressure-resistant corrugated compensator.
The utility model aims at realizing the following technical scheme:
the utility model relates to a corrosion-resistant, high-temperature-resistant and negative-pressure-resistant corrugated compensator which comprises a stud, an adjusting nut, a loose flange, a negative-pressure connecting pipe, a stainless steel metal corrugated pipe and a fluoroplastic corrugated pipe.
The outside of the fluoroplastic corrugated pipe is compounded with an austenitic stainless steel corrugated pipe, the stainless steel corrugated pipe is provided with a cross intercommunication net-shaped groove on the inner surface except the sealing part of the flange, the straight pipe part of the stainless steel corrugated pipe is provided with a circular hole, and the negative pressure connecting pipe is fully welded on the circular hole. The polytetrafluoroethylene corrugated pipe is lined in the stainless steel corrugated pipe, so that the communication between the inner hole of the negative pressure connecting pipe and the net-shaped groove on the inner surface of the stainless steel corrugated pipe is ensured.
The two compensators are respectively sleeved on straight pipe sections at two ends of the stainless steel corrugated pipe by loose flange, and flanges at two ends of the corrugated pipe compounded by the stainless steel corrugated pipe and the polytetrafluoroethylene corrugated pipe with the inner lining are tightly attached to and completely cover the sealing surface of the loose flange.
Three circular limit bolt holes are uniformly distributed on the outer ring of the loose flange, studs penetrate through the limit bolt holes on the outer side of the loose flange, and four adjusting nuts on the studs are distributed on two sides of the two loose flanges. The same stud nuts are uniformly distributed on the loose flange.
Working process
According to the using temperature, calculating the compensation amount, when the compensator needs to be compressed, adjusting the adjusting nut, stretching the compensator by a corresponding design length in advance, connecting and installing the assembled compensator on a used pipeline through bolt holes of loose sleeve flanges at two ends by using fasteners such as bolts and nuts, then loosening the adjusting nut, and after the pipeline runs on the design parameters, stretching the pipeline to compress the compensator, wherein the compensator basically returns to a natural length.
When the compensator needs to be stretched, the adjusting nut is adjusted, the compensator is compressed by corresponding design length in advance, the assembled compensator is connected and installed on a used pipeline through bolt holes of loose flanges at two ends and fasteners such as bolts and nuts, then the adjusting nut is loosened, the pipeline needs to be stretched after the pipeline runs on design parameters, and the compensator stretches to be basically back to natural length. And adjusting the limit nut according to pre-stretching or compression, and adjusting the compensation quantity in advance.
The compensator provides some axial compensation at the same time.
The compensator is used under the negative pressure state, and the negative pressure connecting pipe is connected to the same vacuum device for providing negative pressure for the system device through a pipeline. When the system using the compensator is connected with negative pressure, gas between the stainless steel metal corrugated pipe and the fluoroplastic corrugated pipe composite body is extracted along the reticular grooves and the negative pressure connecting pipes on the inner surface of the metal corrugated pipe, two sides of the compensator are connected on the same vacuum device, the pressure of the inner surface and the outer surface of the fluoroplastic corrugated pipe is guaranteed to be the same, the pressure of extra atmosphere is not born any more, the stainless steel metal corrugated pipe cannot be separated from the stainless steel metal corrugated pipe to be shrunken, the strength of the stainless steel metal corrugated pipe is high, and meanwhile, the fluoroplastic corrugated pipe reduced by high-temperature strength is protected.
When the pipe or the equipment expands with heat and contracts with cold, the flange of the compensator correspondingly contracts along the stud, and the corrugated pipe compresses and expands to compensate the change caused by temperature.
The beneficial effects are that:
according to the compensator, the material and the structure of the compensator are changed, so that the outer wall of the fluoroplastic corrugated pipe 6 of the compensator is subjected to pressure compensation, and the compensator cannot be shrunken or corroded, so that the compensator can be used for a long time in a high-temperature corrosion environment below 260 ℃ and under various negative pressures.
Drawings
FIG. 1 is a schematic diagram of a compensator according to the present utility model;
in the figure, a 1-glass inner tube, a 2-polytetrafluoroethylene glass fiber cloth coating and a 3-expanded polytetrafluoroethylene coating are shown.
Detailed Description
The present utility model will be described in detail with reference to the accompanying drawings and examples.
Examples
As shown in fig. 1, the corrosion-resistant, high-temperature-resistant and negative pressure-resistant corrugated compensator comprises a stud 1, an adjusting nut 2, a loose flange 3, a negative pressure connecting pipe 4, a stainless steel metal corrugated pipe 5 and a fluoroplastic corrugated pipe 6.
The outside of the fluoroplastic corrugated pipe 6 is compounded with an austenitic stainless steel metal corrugated pipe 5, the stainless steel metal corrugated pipe 5 and the inner surface except the flange sealing part are provided with cross intercommunicated net-shaped grooves, the straight pipe part of the stainless steel metal corrugated pipe 5 is provided with a circular hole, and the negative pressure connecting pipe 4 is fully welded on the circular hole. The polytetrafluoroethylene corrugated pipe is lined in the stainless steel corrugated pipe 5, so that the communication between the inner hole of the negative pressure connecting pipe 4 and the net-shaped groove on the inner surface of the stainless steel corrugated pipe 5 is ensured.
The two compensators are respectively sleeved on straight pipe sections at two ends of the stainless steel metal corrugated pipe 5 by loose flange 3, and flanges at two ends of the corrugated pipe compounded by the stainless steel metal corrugated pipe and the polytetrafluoroethylene corrugated pipe with the inner lining are tightly attached to and completely cover the sealing surface of the loose flange 3.
Three circular limit bolt holes are uniformly distributed on the outer ring of the loose flange 3, the stud 1 penetrates through the limit bolt holes on the outer side of the loose flange 3, and four adjusting nuts 2 on the stud 1 are distributed on two sides of the two loose flanges 3. The same stud nuts are 3 groups of uniformly distributed loose flange 3.
Working process
According to the use temperature, the compensation amount is calculated, when the compensator needs to be compressed, the adjusting nut 2 is adjusted, the compensator is stretched by a corresponding design length in advance, the assembled compensator is connected and installed on a used pipeline through bolt holes of the loose flange 3 at the two ends by using fasteners such as bolts and nuts, then the adjusting nut 2 is loosened, the pipeline is stretched to compress the compensator after running on design parameters, and the compensator basically returns to a natural length.
When the compensator needs to be stretched, the adjusting nut 2 is adjusted, the compensator is compressed by a corresponding design length in advance, the assembled compensator is connected and installed on a used pipeline through bolt holes of the loose flange 3 at two ends by using fasteners such as bolts and nuts, then the adjusting nut 2 is loosened, the pipeline needs to be stretched after the pipeline runs on design parameters, and the compensator stretches to be basically back to a natural length. And adjusting the limit nut according to pre-stretching or compression, and adjusting the compensation quantity in advance.
The compensator provides some axial compensation at the same time.
The compensator is used under the negative pressure state, and the negative pressure connecting pipe 4 is connected to the same vacuum device for providing negative pressure for the system device by a pipeline. When the system using the compensator is connected with negative pressure, gas between the stainless steel metal corrugated pipe 5 and the fluoroplastic corrugated pipe 6 complex is extracted along the netlike grooves on the inner surface of the metal corrugated pipe 5 and the negative pressure connecting pipe 4, two sides of the compensator are connected on the same vacuum device, the pressure of the inner surface and the outer surface of the fluoroplastic corrugated pipe 6 is ensured to be the same, the pressure of extra atmosphere is not born any more, the stainless steel metal corrugated pipe 5 cannot be separated from the stainless steel metal corrugated pipe 5 to be shrunken, the strength of the stainless steel metal corrugated pipe 5 is high, and meanwhile, the fluoroplastic corrugated pipe 6 reduced by high-temperature strength is protected.
When the pipe or the equipment expands with heat and contracts with cold, the flange of the compensator correspondingly contracts along the stud 1, and the corrugated pipe compresses and stretches to compensate the change caused by temperature.
Claims (1)
1. A corrosion-resistant, high-temperature and negative pressure-resistant ripple compensator is characterized in that: comprises a stud, an adjusting nut, a loose flange, a negative pressure connecting pipe, a stainless steel metal corrugated pipe and a fluoroplastic corrugated pipe;
the outer part of the fluoroplastic corrugated pipe is compounded with an austenitic stainless steel corrugated pipe, the stainless steel corrugated pipe is provided with a cross intercommunication net-shaped groove on the inner surface except for a flange sealing part, a circular hole is formed in a straight pipe part of the stainless steel corrugated pipe, and a negative pressure connecting pipe is fully welded on the circular hole; the polytetrafluoroethylene corrugated pipe is lined in the stainless steel metal corrugated pipe, so that the communication between the inner hole of the negative pressure connecting pipe and the net-shaped groove on the inner surface of the stainless steel metal corrugated pipe is ensured;
the two compensators are respectively sleeved on straight pipe sections at two ends of the stainless steel corrugated pipe by loose flange, and flanges at two ends of the corrugated pipe compounded by the stainless steel corrugated pipe and the polytetrafluoroethylene corrugated pipe with the inner lining are tightly attached to and completely cover the sealing surface of the loose flange;
three circular limit bolt holes are uniformly distributed on the outer ring of the loose flange, studs penetrate through the limit bolt holes on the outer side of the loose flange, and four adjusting nuts on the studs are distributed on two sides of the two loose flanges; the same stud nuts are uniformly distributed on the loose flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223572441.8U CN219198505U (en) | 2022-12-30 | 2022-12-30 | Corrosion-resistant, high-temperature-resistant and negative-pressure-resistant corrugated compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223572441.8U CN219198505U (en) | 2022-12-30 | 2022-12-30 | Corrosion-resistant, high-temperature-resistant and negative-pressure-resistant corrugated compensator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219198505U true CN219198505U (en) | 2023-06-16 |
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ID=86705054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223572441.8U Active CN219198505U (en) | 2022-12-30 | 2022-12-30 | Corrosion-resistant, high-temperature-resistant and negative-pressure-resistant corrugated compensator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219198505U (en) |
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2022
- 2022-12-30 CN CN202223572441.8U patent/CN219198505U/en active Active
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