CN204062304U - Straight pipe pressure-balancing type expansion joint - Google Patents
Straight pipe pressure-balancing type expansion joint Download PDFInfo
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- CN204062304U CN204062304U CN201420402972.9U CN201420402972U CN204062304U CN 204062304 U CN204062304 U CN 204062304U CN 201420402972 U CN201420402972 U CN 201420402972U CN 204062304 U CN204062304 U CN 204062304U
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- expansion joint
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Abstract
The utility model provides a kind of straight pipe pressure-balancing type expansion joint, belong to expansion joint field, comprise left end pipe, right-hand member pipe and outer pressure-bearing pipe, in described outer pressure-bearing pipe, balance bellows component is set, first work bellows component and have the interior pressure-bearing pipe of pod apertures, the second work bellows component is provided with in described interior pressure-bearing pipe, described left end pipe, left connecting plate, balance bellows component, interior pressure-bearing pipe and the second work bellows component surround a seal chamber communicated, described right-hand member pipe is provided with isolation bellows component, described right-hand member pipe, isolation bellows component and the first work bellows component surround a seal chamber communicated.This straight pipe pressure-balancing type expansion joint is by work bellows component and balance bellows and air insulated, the moisture in air cannot be frozen at bellows inner chamber, ensure that the normal work of whole straight pipe pressure-balancing type expansion joint.
Description
Technical field
The utility model relates to expansion joint field, in particular to straight pipe pressure-balancing type expansion joint.
Background technique
Existing straight pipe pressure-balancing type expansion joint generally bears interior pressure, easy unstability when bellows wave number is more.Meanwhile, bellows is generally direct contact with air for the work bellows of existing straight pipe pressure-balancing type expansion joint and balance, and when delivering cryogenic fluid, work bellows surface is easy to lose flexible compensation function because of icing, causes whole expansion joint to lose efficacy.
Model utility content
The purpose of this utility model is to provide straight pipe pressure-balancing type expansion joint, and during to solve existing straight pipe pressure-balancing type expansion joint delivering cryogenic fluid, its bellows is easy to freeze and causes whole expansion joint to lose the problem of flexible compensation function.
The utility model is achieved in that
This straight pipe pressure-balancing type expansion joint comprises left end pipe, right-hand member pipe and outer pressure-bearing pipe, and the two ends of outer pressure-bearing pipe are connected to left connecting plate and right connecting plate.Arrange balance bellows component, the first work bellows component in outer pressure-bearing pipe and have the interior pressure-bearing pipe of pod apertures, the two ends of balance bellows component are connected to on left connecting plate and interior pressure-bearing pipe.The two ends of the first work bellows component are connected to interior pressure-bearing pipe right-hand member and right connecting plate.Be provided with the second work bellows component in interior pressure-bearing pipe, the two ends of the second work bellows component are connected on interior pressure-bearing pipe left end and left end pipe.Left end pipe, left connecting plate, balance bellows component, interior pressure-bearing pipe and the second work bellows component surround a seal chamber communicated.Right-hand member pipe is provided with the isolation bellows component being connected to the first work bellows component right-hand member, right-hand member pipe, isolation bellows component and the first work bellows component surround a seal chamber communicated.The work that the is arranged so that bellows component of two seal chambers and balance bellows component all and air insulated, effectively prevent the moisture in air from freezing at bellows inner chamber, ensure the flexible compensation function of bellows.
Further, the useful area of the first work bellows component and the second work bellows component is equal, and the useful area of balance bellows component equals the twice of the useful area of the first work bellows component or the second work bellows component.Like this, the pulling force left that the first work bellows component and the second work bellows component produce is equal with the pulling force to the right that balance bellows component produces, thus just offsets the effect of blind flange force, reaches by equilibrium of forces.
Further, one end of left end pipe and the docking of right-hand member pipe is provided with honeycomb duct, and two honeycomb duct ladders are arranged, complement each other to form bidirectional guide structure.This set makes the caliber of whole straight pipe pressure-balancing type expansion joint identical all the time, effectively reduces the resistance of fluid in pipeline.Two stair-stepping honeycomb ducts can pass through machining or welding fabrication, easily manufactured, with low cost.
Further, isolation bellows component comprises isolation bellows, and one end of isolation bellows is connected on right-hand member pipe by connecting ring, and the other end is connected to the first work bellows component by connecting ring.First work bellows component comprises the first work bellows, and the first work bellows is connected to interior pressure-bearing pipe right-hand member away from one end of isolation bellows by connecting ring.Connecting ring cost is low, connects simple and convenient.
Further, left end pipe and described right-hand member pipe are respectively arranged with left flange and right flange, and straight pipe pressure-balancing type expansion joint is removably connected to pipe-line system by left flange and right flange.Flange joint makes whole straight pipe pressure-balancing type expansion joint repair and replacement very convenient.
Further, straight pipe pressure-balancing type expansion joint comprises the evacuated housing assembly being provided with vacuum pumping mouth, evacuated housing assembly, be positioned at the outer pressure-bearing pipe of evacuated housing component internal, left connecting plate, right connecting plate, the first bellows component, isolation bellows component, left end pipe and right-hand member circumference of cannon bone become a seal chamber communicated.Vacuum pumping mouth can be found time the air in evacuated housing assembly, makes to become vacuum state in whole seal chamber, thus plays the effect of heat-insulation and heat-preservation.
The bellows of this straight pipe pressure-balancing type expansion joint bears external pressure, even if wave number is more be also not easy unstability.Simultaneously, work bellows component and balance bellows and air insulated, moisture in air cannot be frozen at bellows inner chamber, when efficiently solving existing straight pipe pressure-balancing type expansion joint delivering cryogenic fluid, its bellows is easy to the problem losing flexible compensation function because freezing, and ensure that the normal work of whole straight pipe pressure-balancing type expansion joint.
Accompanying drawing explanation
The structural representation of the straight pipe pressure-balancing type expansion joint that Fig. 1 provides for the utility model first embodiment;
Fig. 2 is the A portion partial enlarged drawing of Fig. 1;
The structural representation of the straight pipe pressure-balancing type expansion joint that Fig. 3 provides for the utility model second embodiment.
Embodiment
Also by reference to the accompanying drawings the utility model is described in further detail below by specific embodiment.
Consult Fig. 1-2, the first embodiment, this straight pipe pressure-balancing type expansion joint comprises left end pipe 200, right-hand member pipe 920 and outer pressure-bearing pipe 400, and the two ends of outer pressure-bearing pipe 400 are connected to left connecting plate 300 and right connecting plate 900.Arrange balance bellows component 500, first work bellows component 800 in outer pressure-bearing pipe 400 and have the interior pressure-bearing pipe 700 of pod apertures, the two ends of balance bellows component 500 are connected to on left connecting plate 300 and interior pressure-bearing pipe 700.The two ends of the first work bellows component 800 are connected to interior pressure-bearing pipe 700 right-hand member and right connecting plate 900.The two ends being provided with the second work bellows component 600, second work bellows component 600 in interior pressure-bearing pipe 700 are connected on interior pressure-bearing pipe 700 left end and left end pipe 200.Left end pipe 200, left connecting plate 300, balance bellows component 500, interior pressure-bearing pipe 700 and the second work bellows component 600 surround a seal chamber communicated.Right-hand member pipe 920 is provided with the isolation bellows component 910 being connected to the first work bellows component 800 right-hand member, right-hand member pipe 920, isolation bellows component 910 and the first work bellows component 800 surround a seal chamber communicated.The work that the is arranged so that bellows component of two seal chambers and balance bellows component 500 all and air insulated, effectively prevent the moisture in air from freezing at bellows inner chamber, ensure the flexible compensation function of bellows.
The useful area of the first work bellows component 800 and the second work bellows component 600 is equal, and the useful area of balance bellows component 500 equals the twice of the useful area of the first work bellows component 800 or the second work bellows component 600.Like this, the pulling force left that the first work bellows component 800 and the second work bellows component 600 produce is equal with the pulling force to the right that balance bellows component 500 produces, thus just offsets the effect of blind flange force, reaches by equilibrium of forces.
One end that left end pipe 200 and right-hand member pipe 920 dock is provided with honeycomb duct, and two honeycomb duct ladders are arranged, complement each other to form bidirectional guide structure.This set makes the caliber of whole straight pipe pressure-balancing type expansion joint identical all the time, effectively reduces the resistance of fluid in pipeline.Two stair-stepping honeycomb ducts can pass through machining or welding fabrication, easily manufactured, with low cost.
Isolation bellows component 910 comprises isolation bellows, and one end of isolation bellows is connected on right-hand member pipe 920 by connecting ring, and the other end is connected to the first work bellows component 800 by connecting ring.First work bellows component 800 comprises the first work bellows, and the first work bellows is connected to interior pressure-bearing pipe 700 right-hand member away from one end of isolation bellows by connecting ring.Second work bellows component 600 comprises the second work bellows, and second work bellows one end is connected on left end pipe 200 by connecting ring, and the other end is connected to the left end of interior pressure-bearing pipe 700 by connecting ring.Balance bellows component 500 comprises balance bellows, and balance bellows one end is connected on left connecting plate 300 by connecting ring, and the other end is connected on interior pressure-bearing pipe 700 by connecting ring.Connecting ring cost is low, connects simple and convenient.Left connecting plate 300 is by being welded to connect on left end pipe 200, and the right-hand member of interior pressure-bearing pipe 700 is by being welded to connect on right-hand member pipe 920.Welding operation is simple, stable connection.
Left end pipe 200 and right-hand member pipe 920 are respectively arranged with left flange 100 and right flange 930, and straight pipe pressure-balancing type expansion joint is removably connected to pipe-line system by left flange 100 and right flange 930.Flange joint makes whole straight pipe pressure-balancing type expansion joint repair and replacement very convenient.
The bellows of this straight pipe pressure-balancing type expansion joint bears external pressure, even if wave number is more be also not easy unstability.Simultaneously, work bellows component and balance bellows and air insulated, moisture in air cannot be frozen at bellows inner chamber, when efficiently solving existing straight pipe pressure-balancing type expansion joint delivering cryogenic fluid, its bellows is easy to the problem losing flexible compensation function because freezing, and ensure that the normal work of whole straight pipe pressure-balancing type expansion joint.
Second embodiment, consult Fig. 3, this straight pipe pressure-balancing type expansion joint comprises left end pipe 200, right-hand member pipe 920, outer pressure-bearing pipe 400 and is provided with the evacuated housing assembly 550 of vacuum pumping mouth, and the two ends of outer pressure-bearing pipe 400 are connected to left connecting plate 300 and right connecting plate 900.Arrange balance bellows component 500, first work bellows component 800 in outer pressure-bearing pipe 400 and have the interior pressure-bearing pipe 700 of pod apertures, the two ends of balance bellows component 500 are connected to on left connecting plate 300 and interior pressure-bearing pipe 700.The two ends of the first work bellows component 800 are connected to interior pressure-bearing pipe 700 right-hand member and right connecting plate 900.The two ends being provided with the second work bellows component 600, second work bellows component 600 in interior pressure-bearing pipe 700 are connected on interior pressure-bearing pipe 700 left end and left end pipe 200.Left end pipe 200, left connecting plate 300, balance bellows component 500, interior pressure-bearing pipe 700 and the second work bellows component 600 surround a seal chamber communicated.Right-hand member pipe 920 is provided with the isolation bellows component 910 being connected to evacuated housing assembly 550 right-hand member, isolation bellows component 910, left end pipe 200, right-hand member pipe 920, first work bellows component 800, evacuated housing assembly 550, the outer pressure-bearing pipe 400 being positioned at described evacuated housing assembly 550 inside, left connecting plate 300 and right connecting plate 900 surround a seal chamber communicated.
The work that the is arranged so that bellows component of two seal chambers and balance bellows component 500 all and air insulated, effectively prevent the moisture in air from freezing at bellows inner chamber, ensure the flexible compensation function of bellows.Vacuum pumping mouth can be found time the air in evacuated housing assembly 550, makes to become vacuum state in whole seal chamber, thus plays the effect of heat-insulation and heat-preservation.
The useful area of the first work bellows component 800 and the second work bellows component 600 is equal, and the useful area of balance bellows component 500 equals the twice of the useful area of the first work bellows component 800 or the second work bellows component 600.Like this, the pulling force left that the first work bellows component 800 and the second work bellows component 600 produce is equal with the pulling force to the right that balance bellows component 500 produces, thus just offsets the effect of blind flange force, reaches by equilibrium of forces.
One end that left end pipe 200 and right-hand member pipe 920 dock is provided with honeycomb duct, and two honeycomb duct ladders are arranged, complement each other to form bidirectional guide structure.This set makes the caliber of whole straight pipe pressure-balancing type expansion joint identical all the time, effectively reduces the resistance of fluid in pipeline.Two stair-stepping honeycomb ducts can pass through machining or welding fabrication, easily manufactured, with low cost.
Isolation bellows component 910 comprises isolation bellows, and one end of isolation bellows is connected on right-hand member pipe 920 by connecting ring, and the other end is connected to evacuated housing assembly 550 by connecting ring.First work bellows component 800 comprises the first work bellows, and first work bellows one end is connected to interior pressure-bearing pipe 700 right-hand member, and the other end is connected on right connecting plate 900 by connecting ring.Connecting ring cost is low, connects simple and convenient.
Left end pipe 200 and described right-hand member pipe 920 are respectively arranged with left flange 100 and right flange 930, and straight pipe pressure-balancing type expansion joint is removably connected to pipe-line system by left flange 100 and right flange 930.Flange joint makes whole straight pipe pressure-balancing type expansion joint repair and replacement very convenient.
The bellows of this straight pipe pressure-balancing type expansion joint bears external pressure, even if wave number is more be also not easy unstability.Simultaneously, work bellows component and balance bellows and air insulated, moisture in air cannot be frozen at bellows inner chamber, when efficiently solving existing straight pipe pressure-balancing type expansion joint delivering cryogenic fluid, its bellows is easy to the problem losing flexible compensation function because freezing, and ensure that the normal work of whole straight pipe pressure-balancing type expansion joint.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (6)
1. a straight pipe pressure-balancing type expansion joint, it is characterized in that, comprise left end pipe, right-hand member pipe and outer pressure-bearing pipe, the two ends of described outer pressure-bearing pipe are connected to left connecting plate and right connecting plate, in described outer pressure-bearing pipe, balance bellows component is set, first work bellows component and have the interior pressure-bearing pipe of pod apertures, the two ends of described balance bellows component are connected to on described left connecting plate and described interior pressure-bearing pipe, the two ends of described first work bellows component are connected to described interior pressure-bearing pipe right-hand member and described right connecting plate, the second work bellows component is provided with in described interior pressure-bearing pipe, the two ends of described second work bellows component are connected on described interior pressure-bearing pipe left end and described left end pipe, described left end pipe, left connecting plate, balance bellows component, interior pressure-bearing pipe and the second work bellows component surround a seal chamber communicated, described right-hand member pipe is provided with the isolation bellows component being connected to described first work bellows component right-hand member, described right-hand member pipe, isolation bellows component and the first work bellows component surround a seal chamber communicated.
2. straight pipe pressure-balancing type expansion joint according to claim 1, it is characterized in that, the useful area of described first work bellows component and the second work bellows component is equal, and the useful area of described balance bellows component equals the twice of the useful area of the first work bellows component or the second work bellows component.
3. straight pipe pressure-balancing type expansion joint according to claim 1, is characterized in that, one end of described left end pipe and the docking of described right-hand member pipe is provided with honeycomb duct, and two honeycomb duct ladders are arranged, complement each other to form bidirectional guide structure.
4. straight pipe pressure-balancing type expansion joint according to claim 1, it is characterized in that, described isolation bellows component comprises isolation bellows, one end of described isolation bellows is connected on described right-hand member pipe by connecting ring, the other end is connected to described first work bellows component by connecting ring, described first work bellows component comprises the first work bellows, and described first work bellows is connected to described interior pressure-bearing pipe right-hand member away from one end of described isolation bellows by connecting ring.
5. straight pipe pressure-balancing type expansion joint according to claim 1, it is characterized in that, described left end pipe and described right-hand member pipe are respectively arranged with left flange and right flange, and described straight pipe pressure-balancing type expansion joint is removably connected to pipe-line system by left flange and right flange.
6. straight pipe pressure-balancing type expansion joint according to claim 1, it is characterized in that, described straight pipe pressure-balancing type expansion joint comprises the evacuated housing assembly being provided with vacuum pumping mouth, described evacuated housing assembly, be positioned at the outer pressure-bearing pipe of evacuated housing component internal, left connecting plate, right connecting plate, the first bellows component, isolation bellows component, left end pipe and right-hand member circumference of cannon bone become a seal chamber communicated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420402972.9U CN204062304U (en) | 2014-07-18 | 2014-07-18 | Straight pipe pressure-balancing type expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420402972.9U CN204062304U (en) | 2014-07-18 | 2014-07-18 | Straight pipe pressure-balancing type expansion joint |
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| Publication Number | Publication Date |
|---|---|
| CN204062304U true CN204062304U (en) | 2014-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420402972.9U Expired - Fee Related CN204062304U (en) | 2014-07-18 | 2014-07-18 | Straight pipe pressure-balancing type expansion joint |
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| CN (1) | CN204062304U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387925A (en) * | 2017-08-16 | 2017-11-24 | 洛阳双瑞特种装备有限公司 | The used ball straight pipe pressure-balancing type expansion joint of HTGR |
| CN107606371A (en) * | 2017-08-16 | 2018-01-19 | 洛阳双瑞特种装备有限公司 | It is a kind of to cross ball expansion joint with rifling |
| CN107781563A (en) * | 2016-08-31 | 2018-03-09 | 吉慧萍 | The non-maintaining self- steering sealed expansion joint of external pressure straight pipe pressure-equalizing |
| CN107795786A (en) * | 2016-08-31 | 2018-03-13 | 吉慧萍 | The non-maintaining self- steering sealed expansion joint of on-line monitoring external pressure straight pipe pressure-equalizing |
| JP2019173834A (en) * | 2018-03-28 | 2019-10-10 | 大陽日酸株式会社 | Internal piping structure of vacuum heat insulation pipe |
| CN114152103A (en) * | 2021-11-18 | 2022-03-08 | 广州海恩能源技术有限公司 | Condenser for axial exhaust steam turbine |
| CN115095798A (en) * | 2022-06-08 | 2022-09-23 | 盐城旭东机械有限公司 | High-pressure straight pipe high-pressure anti-drop and high-pressure early warning method and system |
-
2014
- 2014-07-18 CN CN201420402972.9U patent/CN204062304U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107781563A (en) * | 2016-08-31 | 2018-03-09 | 吉慧萍 | The non-maintaining self- steering sealed expansion joint of external pressure straight pipe pressure-equalizing |
| CN107795786A (en) * | 2016-08-31 | 2018-03-13 | 吉慧萍 | The non-maintaining self- steering sealed expansion joint of on-line monitoring external pressure straight pipe pressure-equalizing |
| CN107387925A (en) * | 2017-08-16 | 2017-11-24 | 洛阳双瑞特种装备有限公司 | The used ball straight pipe pressure-balancing type expansion joint of HTGR |
| CN107606371A (en) * | 2017-08-16 | 2018-01-19 | 洛阳双瑞特种装备有限公司 | It is a kind of to cross ball expansion joint with rifling |
| CN107606371B (en) * | 2017-08-16 | 2020-07-28 | 洛阳双瑞特种装备有限公司 | Ball-passing expansion joint with rifling |
| JP2019173834A (en) * | 2018-03-28 | 2019-10-10 | 大陽日酸株式会社 | Internal piping structure of vacuum heat insulation pipe |
| CN114152103A (en) * | 2021-11-18 | 2022-03-08 | 广州海恩能源技术有限公司 | Condenser for axial exhaust steam turbine |
| CN114152103B (en) * | 2021-11-18 | 2024-05-14 | 广东海恩能源技术股份有限公司 | Condenser for axial exhaust steam turbine |
| CN115095798A (en) * | 2022-06-08 | 2022-09-23 | 盐城旭东机械有限公司 | High-pressure straight pipe high-pressure anti-drop and high-pressure early warning method and system |
| CN115095798B (en) * | 2022-06-08 | 2023-10-31 | 盐城旭东机械有限公司 | High-pressure straight pipe high-pressure anti-drop and high-pressure early warning method and system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141231 Termination date: 20160718 |
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| CF01 | Termination of patent right due to non-payment of annual fee |