CN112253873A - Sealing structure for pipeline interface of R744 air-conditioning heat pump system - Google Patents
Sealing structure for pipeline interface of R744 air-conditioning heat pump system Download PDFInfo
- Publication number
- CN112253873A CN112253873A CN202011256347.4A CN202011256347A CN112253873A CN 112253873 A CN112253873 A CN 112253873A CN 202011256347 A CN202011256347 A CN 202011256347A CN 112253873 A CN112253873 A CN 112253873A
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- Prior art keywords
- air
- joint
- conditioning
- heat pump
- pump system
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- 238000007789 sealing Methods 0.000 title claims abstract description 47
- 238000004378 air conditioning Methods 0.000 title claims abstract description 42
- 239000002184 metal Substances 0.000 claims abstract description 22
- 230000007704 transition Effects 0.000 claims abstract description 19
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000006835 compression Effects 0.000 description 10
- 238000007906 compression Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 3
- 230000007306 turnover Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 229910052755 nonmetal Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
- F16L33/02—Hose-clips
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
- F16L13/02—Welded joints
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints Allowing Movement (AREA)
- Joints With Pressure Members (AREA)
Abstract
The invention relates to a sealing structure for a pipeline interface of an R744 air-conditioning heat pump system, which comprises an air-conditioning hard pipe, an air-conditioning hose, an air-conditioning pipe counter-hand piece sleeved outside the air-conditioning hose, a connecting piece connected with the air-conditioning pipe counter-hand piece, a spherical joint hermetically connected with the connecting piece, and a transition joint connected with the spherical joint, wherein the transition joint is connected with the air-conditioning hard pipe; the nut is screwed with the connecting piece, and the spherical joint is axially screwed and extruded through the nut to cause the local deformation of the metal gasket on the joint so as to realize sealing. Compared with the prior art, the invention has the advantages of stable and reliable sealing, wide application range, low assembly requirement and the like.
Description
Technical Field
The invention relates to the technical field of R744 air-conditioning heat pump systems, in particular to a sealing structure for a pipeline interface of a R744 air-conditioning heat pump system.
Background
At present, under the environment facing the development of refrigerant substitutes, CO2 stands out among numerous alternatives in terms of environmental protection and excellent thermophysical properties. The CO2 has large temperature difference in the gas cooler in a transcritical circulation state, and is widely applied to a heat pump hot water system.
The working pressure of the R744(C02) air-conditioning heat pump system reaches 170bar at most, the working temperature is-40 ℃ to 170 ℃, the R744(C02) air-conditioning pipeline interface is tightened by a pressing plate through a bolt for connection at present, and sealing is realized by compressing a metal gasket or a nonmetal elastic gasket, however, the nonmetal elastic gasket only plays a fixing role, the metal gasket is extremely easy to damage, sensitive and fragile, and the leakage risk is extremely high. For the specific sealing means, the compression of the metal gasket by the eccentric compression of the end face of the pressure plate is adopted in many ways, and the compression deformation amount of the compression mode is not uniform enough. The connection and sealing mode has higher requirements on the machining size precision of parts, and if the parts are not well matched with each other during assembly, effective sealing cannot be realized, namely the structure of the pressure plate cannot meet the performance requirements of an air-conditioning pipeline under the working conditions of high pressure (170bar) and high and low temperature (-40 ℃ -170 ℃); meanwhile, the durability of the pulse generator under the actual working condition of high and low temperature circulation has certain risks.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a sealing structure for a pipeline interface of an R744 air-conditioning heat pump system, wherein a metal gasket is axially compressed by a ball head for sealing, the turnover compression amount of the gasket is uniform, and a more reliable and stable sealing effect can be achieved by matching with the screwing action of a nut.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides a seal structure for R744 air conditioner heat pump system pipe connection, includes air conditioner hard tube, air conditioner hose and the air conditioner pipe of cover establishing outside the air conditioner hose is right the piece, still includes the connecting piece of being connected with the air conditioner pipe right the piece, with connecting piece sealing connection's ball joint to and the transition joint of being connected with ball joint, transition joint connects the air conditioner hard tube.
Furthermore, the spherical joint is sleeved with a spherical gasket and then is connected with the connecting piece in a sealing manner.
Further, the connecting piece is provided with a central through hole for penetrating through the air conditioner hose in the connecting direction of the air conditioner pipe counter piece and the spherical joint.
Furthermore, an inner concave part which has an inner diameter larger than that of the central through hole and is used for accommodating the head part of the spherical joint is arranged at the central part of the connecting end of the connecting piece and the spherical joint.
Further, the ball joint comprises a square head, a ball body and a sleeve rod which are connected in sequence, the ball body comprises a first semi-ball body and a second semi-ball body which are connected with each other, the diameter of the second semi-ball body is larger than that of the first semi-ball body, the first semi-ball body is connected with the square head, and the second semi-ball body is connected with the sleeve rod.
Further, the concave part includes square shrinkage pool and with the conical surface shrinkage pool that square shrinkage pool is connected, the shape, the volume size of square shrinkage pool with the shape, the volume size phase-match of square head, the shape, the size of conical surface shrinkage pool with the shape, the volume size phase-match of first hemispheroid.
Furthermore, after the spherical joint is connected with the connecting piece through the concave part, a nut is sleeved outside the joint of the spherical joint and the connecting piece.
Further, the spherical gasket is a metal spherical gasket.
Furthermore, a loop bar of the spherical joint is welded with one end of the transition joint, and the other end of the transition joint is welded with the air-conditioning hard pipe.
Further, the wall thickness of the transition joint is larger than that of the air-conditioning hose.
Compared with the prior art, the sealing structure of the pipeline interface of the air-conditioning heat pump system provided by the invention at least has the following beneficial effects:
1) the metal spherical gasket is externally embedded and installed on the spherical joint, the square head of the spherical joint can be connected with the square concave hole in the connecting piece in place, the spherical joint is screwed with the connecting piece through the nut, the metal gasket on the joint is locally deformed to realize sealing through axial screwing and extrusion of the nut, the metal spherical gasket is axially compressed by the ball head to realize sealing, the compression deformation of the ball head in an axial sealing mode is very uniform, the turnover compression amount of the metal spherical gasket is uniform, compared with the prior art, the metal spherical gasket has a more reliable sealing effect, the installation is easier, the high-pressure sealing is realized, and the performance requirements of an air-conditioning pipeline under the working conditions of high pressure (170bar) and high and low temperature (minus 40 ℃ -170 ℃) can.
2) The sealing structure has low requirement on precision of parts and low requirement on assembly matching of pipeline interfaces, and can greatly improve the application range of the sealing structure.
3) The pipeline can be repeatedly installed, only the metal spherical gasket needs to be replaced, the replacement cost is low, and the assembly requirement is lower.
Drawings
FIG. 1 is a schematic structural diagram of a sealing structure for a pipeline interface of an R744 air-conditioning heat pump system in an embodiment;
FIG. 2 is a schematic structural diagram of a connecting piece of a sealing structure for a pipeline interface of an R744 air-conditioning heat pump system in an embodiment;
FIG. 3 is a schematic structural diagram of a ball joint sleeved with a metal ball gasket of a sealing structure of a pipeline interface of an R744 air-conditioning heat pump system in an embodiment;
the reference numbers in the figures indicate:
1. the air conditioner pipe comprises an air conditioner pipe hand piece, 2, a connecting piece, 3, a metal spherical gasket, 4, a spherical joint, 5, a nut, 6, a transition joint, 7, an air conditioner hard pipe, 8, an air conditioner hose, 21, a square concave hole, 22, a conical concave hole, 41, a square head, 42, a sphere, 43 and a loop bar.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.
Examples
The invention relates to a sealing structure for a pipeline interface of an R744 air-conditioning heat pump system, which is characterized in that compared with the traditional mode that a pressing plate end surface eccentric compression metal gasket is adopted for sealing an R744(C02) air-conditioning pipe pressing plate, the sealing structure adopts a ball head axial compression metal gasket for sealing, and the turnover compression amount of the gasket is uniform.
The structure of the sealing structure of the present invention is shown in fig. 1, and includes: the air conditioner pipe pair piece comprises an air conditioner pipe pair piece 1, a connecting piece 2, a metal spherical gasket 3, a spherical joint 4, a nut 5, a transition joint 6 and an air conditioner hard pipe 7.
The air conditioner pipe opponent member 1 is sleeved outside the air conditioner hose 8, the air conditioner pipe opponent member 1 is connected with the spherical joint 4 through the connecting member 2, and the air conditioner hose 8 sequentially extends out of the air conditioner pipe opponent member 1, the connecting member 2 and the spherical joint 2. The other end of the spherical joint 4 is connected with a transition joint 6, the wall thickness of the transition joint 6 is larger than that of the hose, and the transition joint 6 is connected with an air-conditioning hard pipe 7.
The ball joint 4 comprises a square head 41, a ball 42 and a loop bar 43 which are connected in sequence. The contact surface of the ball 42 and the cuboid head 41 is a square horizontal plane. The sphere 42 includes a small diameter hemisphere and a large diameter hemisphere connected to each other. The hemisphere with the smaller diameter is connected with the square head 41, and the hemisphere with the larger diameter is connected with the sleeve rod 43.
The connecting member 2 is provided with a central through hole for penetrating the air-conditioning hose 8 from the connection with the air-conditioning pipe pair member 1 to the connection with the ball joint 4. The central part of the connecting end of the connecting piece 2 and the spherical joint 4 is provided with an inner concave part with the inner diameter larger than that of the central through hole, and the inner concave part consists of an inner square concave hole 21 and a conical concave hole 22 connected with the square concave hole 21. The shape and volume of the square concave hole 21 are matched with the square head 41 of the ball joint 4. The shape and size of the conical concave hole 22 are matched with the shape and volume of a hemisphere with a small diameter of the sphere 42.
The metal spherical gasket 3 is sleeved and embedded on the hemisphere with the small diameter of the spherical joint 4, the square head 41 of the spherical joint 4 is inserted into the square concave hole 21 of the connecting piece 2, then the nut 5 is sleeved at the joint of the connecting piece 2 and the spherical joint 4, so that the spherical joint 4 is screwed with the connecting piece 2, the nut 5 drives the spherical joint 4 to extrude the conical surface concave hole 22 of the connecting piece 2, the conical surface concave hole 22 and the hemispherical outer surface of the sphere 42 form a sealing structure with a complementary conical surface, and the metal spherical gasket 3 is deformed with a conical angle contact part to realize sealing. After the sealing connection, the loop bar 43 of the spherical joint 4 is welded with one end of the transition joint 6, and the other end of the transition joint 6 is welded with the air-conditioning hard pipe 7.
The invention adopts the metal spherical gasket to be externally embedded and installed on the spherical joint, and can be connected with the square concave hole in the connecting piece in place through the head part of the spherical joint protruding out of the square body (the head part of the square body). The nut is screwed with the connecting piece, the spherical joint is axially screwed and extruded through the nut to enable the metal gasket on the joint to locally deform to realize sealing, and the performance requirements of the air-conditioning pipeline under the working conditions of high pressure (170bar) and high and low temperature (-40 ℃ -170 ℃) can be met. In addition, the sealing structure has low requirements on precision of parts and low requirements on assembly and matching of pipeline interfaces.
While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and those skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a seal structure for R744 air conditioner heat pump system pipe connection, includes air conditioner hard tube (7), air conditioner hose (8) and establishes air conditioner pipe opponent spare (1) outside air conditioner hose (8), its characterized in that still includes connecting piece (2) of being connected with air conditioner pipe opponent spare (1), ball joint (4) with connecting piece (2) sealing connection to and transition joint (6) of being connected with ball joint (4), transition joint (6) are connected air conditioner hard tube (7).
2. A sealing structure for a pipeline interface of an R744 air-conditioning heat pump system according to claim 1, characterized in that the spherical joint (4) is sleeved with a spherical gasket and then is connected with the connecting piece (2) in a sealing way.
3. A sealing structure for a pipe interface of an R744 air-conditioning heat pump system according to claim 1, characterized in that the connecting member (2) is provided with a central through hole for penetrating the air-conditioning hose (8) in a connecting direction with the air-conditioning pipe pair member (1), the ball joint (4).
4. A sealing structure for a pipeline interface of an R744 air-conditioning heat pump system according to claim 3, characterized in that the central part of the connecting end of the connecting piece (2) and the spherical joint (4) is provided with an inner concave part with an inner diameter larger than that of the central through hole for accommodating the head part of the spherical joint (4).
5. A sealing structure for a pipeline interface of an R744 air-conditioning heat pump system according to claim 4, characterized in that the spherical joint (4) comprises a square head (41), a sphere (42) and a sleeve rod (43) which are connected in sequence, the sphere (42) comprises a first hemisphere and a second hemisphere which are connected with each other, the diameter of the second hemisphere is larger than that of the first hemisphere, the first hemisphere is connected with the square head (41), and the second hemisphere is connected with the sleeve rod (43).
6. A sealing structure for a pipeline interface of an R744 air-conditioning heat pump system according to claim 5, characterized in that the inner concave part comprises a square concave hole (21) and a conical concave hole (22) connected with the square concave hole (21), the shape and the size of the square concave hole (21) are matched with those of the square head part (41), and the shape and the size of the conical concave hole (22) are matched with those of the first hemisphere.
7. A sealing structure for a pipeline interface of an R744 air-conditioning heat pump system according to claim 6, characterized in that a nut (5) is sleeved outside the joint of the spherical joint (4) and the connecting piece (2) after the spherical joint is connected with the connecting piece through the concave part.
8. A sealing structure for a pipe interface of an R744 air-conditioning heat pump system according to claim 2, characterized in that the spherical gasket is a metal spherical gasket (3).
9. A sealing structure for a pipeline interface of an R744 air-conditioning heat pump system according to claim 5, characterized in that a loop bar (43) of the spherical joint (4) is welded with one end of the transition joint (6), and the other end of the transition joint (6) is welded with the air-conditioning hard pipe (7).
10. A sealing structure for a R744 air-conditioning heat pump system pipe interface according to claim 1, characterized in that the wall thickness of the transition joint (6) is larger than that of the air-conditioning hose (8).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011256347.4A CN112253873A (en) | 2020-11-11 | 2020-11-11 | Sealing structure for pipeline interface of R744 air-conditioning heat pump system |
| PCT/CN2021/118900 WO2022100277A1 (en) | 2020-11-11 | 2021-09-17 | Sealing structure for pipeline connector of r744 air conditioner heat pump system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011256347.4A CN112253873A (en) | 2020-11-11 | 2020-11-11 | Sealing structure for pipeline interface of R744 air-conditioning heat pump system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112253873A true CN112253873A (en) | 2021-01-22 |
Family
ID=74265370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011256347.4A Pending CN112253873A (en) | 2020-11-11 | 2020-11-11 | Sealing structure for pipeline interface of R744 air-conditioning heat pump system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN112253873A (en) |
| WO (1) | WO2022100277A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113958782A (en) * | 2021-11-15 | 2022-01-21 | 上海众源燃油分配器制造有限公司 | Sealing structure for end part of pipeline interface of air-conditioning heat pump system |
| WO2022100277A1 (en) * | 2020-11-11 | 2022-05-19 | 上海众源燃油分配器制造有限公司 | Sealing structure for pipeline connector of r744 air conditioner heat pump system |
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-
2020
- 2020-11-11 CN CN202011256347.4A patent/CN112253873A/en active Pending
-
2021
- 2021-09-17 WO PCT/CN2021/118900 patent/WO2022100277A1/en active Application Filing
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| GB141879A (en) * | 1919-06-10 | 1920-04-29 | Westinghouse Brake & Signal | Improvements in and relating to hose couplings |
| US5975588A (en) * | 1997-09-06 | 1999-11-02 | Hesseln; Joerg | Turnable pipe and hose connections |
| CN201100502Y (en) * | 2007-09-28 | 2008-08-13 | 沈向东 | Spherical pipeline compensator |
| CN201284892Y (en) * | 2008-09-22 | 2009-08-05 | 浙江柏润液压有限公司 | Spherical straight-through rotating joint for continuous casting device |
| CN203549194U (en) * | 2013-10-08 | 2014-04-16 | 北京航天益森风洞工程技术有限公司 | Sealing gasket for conical connecting piece of pipeline bulb |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2022100277A1 (en) * | 2020-11-11 | 2022-05-19 | 上海众源燃油分配器制造有限公司 | Sealing structure for pipeline connector of r744 air conditioner heat pump system |
| CN113958782A (en) * | 2021-11-15 | 2022-01-21 | 上海众源燃油分配器制造有限公司 | Sealing structure for end part of pipeline interface of air-conditioning heat pump system |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022100277A1 (en) | 2022-05-19 |
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