CN204665772U - The expansion valve of radial and axial dual-seal - Google Patents
The expansion valve of radial and axial dual-seal Download PDFInfo
- Publication number
- CN204665772U CN204665772U CN201520283665.8U CN201520283665U CN204665772U CN 204665772 U CN204665772 U CN 204665772U CN 201520283665 U CN201520283665 U CN 201520283665U CN 204665772 U CN204665772 U CN 204665772U
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- China
- Prior art keywords
- valve
- seal
- sealing ring
- rod
- valve core
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- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 claims abstract description 29
- 239000003507 refrigerant Substances 0.000 claims description 7
- 239000004809 Teflon Substances 0.000 claims description 6
- 229920006362 Teflon® Polymers 0.000 claims description 6
- 230000008676 import Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 6
- 238000005057 refrigeration Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003325 tomography Methods 0.000 description 1
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Abstract
The utility model discloses the expansion valve of a kind of radial direction and axial dual-seal, comprise expanding valve body, valve body is provided with valve core device, described valve core device comprises flowtube and coordinates the taper valve core of flowtube, spring one end is socketed bottom taper valve core, spring other end socket valve rod, the valve rod body of rod is provided with annular flange flange, annular flange flange bottom surface is provided with the seal groove having installed sealing ring, annular flange flange bottom surface connects the end surface of step hole of body base, and stepped hole inwall is connected and is located at the sealing ring of valve rod body of rod periphery; Described sealing ring is divided into upper and lower two.The utility model realizes the technique effect of radial and axial dual-seal by the sealing ring of diverse location on valve rod and ring structure, and by the spool aperture control valve reaction diaphragm pressure below diaphragm, the gap of cone structure in upper and lower process and between flowtube controlling taper valve core realizes gradual change, certain flow is also gradual change, reaches the technical purpose accurately controlled.
Description
Technical field
The utility model relates to a kind of valve of refrigeration plant, the expansion valve of a kind of radial direction and axial dual-seal specifically.
Background technology
Expansion valve is a vitals in refrigeration system, is generally installed between liquid storage cylinder and evaporimeter.Expansion valve makes the liquid refrigerant of middle temperature high pressure be become the moist steam of low-temp low-pressure by its throttling, then cold-producing medium absorbs heat and reaches refrigeration in evaporimeter, expansion valve carrys out by-pass valve control flow by the degree of superheat change of evaporimeter end, prevents evaporator area underutilization and engine knock phenomenon.Its sealing system of existing expansion valve mostly adopts sealing ring to be socketed valve rod, then radial seal valve body, and this kind of sealing means is because sealing ring is aging and the difference of shrinkage factor often occurs that the technical failures such as refrigrant leakage, service life are shorter.Existing expansion valve is coarse for the control opposed configuration of refrigerant flow in addition, and control accuracy is poor.How Leakage prevention, extend expansion valve service life, to improve refrigerant flow control precision be the object that those skilled in the art study always.
Summary of the invention
The utility model provides that a kind of structure is simple, the radial direction of favorable sealing property, refrigerant flow modification stability and the expansion valve of axial dual-seal.
The expansion valve of a kind of radial direction and axial dual-seal, comprise expanding valve body, valve body vertical direction top is provided with the diaphragm that thermo-sensitive tube controls to rise and fall, valve body below diaphragm is provided with the spool aperture control valve of vertical direction, valve body both lateral sides is respectively equipped with refrigerant inlet and the outlet of up-down structure, valve core device is provided with between import and outlet, described valve core device comprises flowtube and coordinates the taper valve core of flowtube, spring one end is socketed bottom taper valve core, spring other end socket valve rod, the valve rod body of rod is provided with annular flange flange, annular flange flange bottom surface is provided with the seal groove having installed sealing ring, annular flange flange bottom surface connects the end surface of step hole of body base, achieve stem shaft to the airtight performance between valve body, and obturation effect between valve rod and valve body radial direction is realized by the stepped hole inwall sealing ring being located at valve rod body of rod periphery that is connected, reach the technique effect of radial and axial dual-seal.Described sealing ring is divided into upper and lower two, reaches the technique effect of radial direction double sealing, extends the service life of expansion valve greatly.Valve core device of the present utility model is by the spool aperture control valve reaction diaphragm pressure below diaphragm, and this pressure is delivered on the taper valve core of spring end, because its gap in upper and lower process and between flowtube of cone structure of taper valve core is gradual change, certain flow is also gradual change, reach the technical purpose accurately controlled, change the tomography formula change of traditional flow.
Described sealing ring is teflon seal ring, improves the performance of the low temperature resistant and high temperature of sealing ring.Circular arc flange is provided with as further technical pattern teflon seal ring endoporus place, circular arc flange is connected the circular arc chamfering on stepped hole, is all significantly enhanced no matter the turnup structure of this kind of circular arc is sealing area or sealing strength.
The stepped hole periphery of described body base has been threaded nut, and be provided with elastomeric pad between nut end face and valve body, prevent nut from occurring getting loose, nut decreases risk of leakage with airtight connection of stepped hole periphery screw thread simultaneously.
The utility model realizes the technique effect of radial and axial dual-seal by the sealing ring of diverse location on valve rod and ring structure, and by the spool aperture control valve reaction diaphragm pressure below diaphragm, the gap of cone structure in upper and lower process and between flowtube controlling taper valve core realizes gradual change, certain flow is also gradual change, reaches the technical purpose accurately controlled.
Accompanying drawing explanation
Be illustrated in figure 1 the expansion valve sectional structure schematic diagram of the utility model radial direction and axial dual-seal.
Detailed description of the invention
The expansion valve of a kind of radial direction and axial dual-seal as shown in Figure 1, comprise expanding valve body 1, valve body 1 vertical direction top is provided with the diaphragm 4 that thermo-sensitive tube controls to rise and fall, valve body 1 below diaphragm 4 is provided with the spool aperture control valve 2 of vertical direction, valve body both lateral sides is respectively equipped with refrigerant inlet 5 and the outlet 8 of up-down structure, be provided with valve core device between import 5 and outlet 8, import 5 and the outlet 8 of this kind of up-down structure form natural-drop, improve the mobility of cold-producing medium.
Valve core device comprises the flowtube 3 being communicated with import 5 and the taper valve core 6 coordinating flowtube, spring 9 one end is socketed bottom taper valve core 6, spring 9 other end socket valve rod 10, valve rod 10 body of rod is provided with annular flange flange, annular flange flange bottom surface is provided with the seal groove having installed sealing ring 7, annular flange flange bottom surface connects the end surface of step hole of body base, and stepped hole inwall is connected and is located at the sealing ring 11 of valve rod body of rod periphery.Be divided into upper and lower two as the preferred sealing ring of structure 11, reach the technique effect of dual-seal.
Be teflon seal ring as the preferred sealing ring of structure.Teflon seal ring endoporus place is provided with circular arc flange, and circular arc flange is connected the circular arc chamfering on stepped hole, improves sealing area and sealing strength by the turnup structure of circular arc.
In order to improve sealing effectiveness further, the stepped hole periphery bottom Leakage prevention valve body 1 has been threaded nut, is provided with elastomeric pad between nut end face and valve body.
Claims (4)
1. the expansion valve of a radial direction and axial dual-seal, comprise expanding valve body, valve body vertical direction top is provided with the diaphragm that thermo-sensitive tube controls to rise and fall, valve body below diaphragm is provided with the spool aperture control valve of vertical direction, valve body both lateral sides is respectively equipped with refrigerant inlet and the outlet of up-down structure, valve core device is provided with between import and outlet, it is characterized in that: described valve core device comprises flowtube and coordinates the taper valve core of flowtube, spring one end is socketed bottom taper valve core, spring other end socket valve rod, the valve rod body of rod is provided with annular flange flange, annular flange flange bottom surface is provided with the seal groove having installed sealing ring, annular flange flange bottom surface connects the end surface of step hole of body base, stepped hole inwall is connected and is located at the sealing ring of valve rod body of rod periphery, described sealing ring is divided into upper and lower two.
2. the expansion valve of radial direction as claimed in claim 1 and axial dual-seal, is characterized in that: described sealing ring is teflon seal ring.
3. the expansion valve of radial direction as claimed in claim 2 and axial dual-seal, is characterized in that: described teflon seal ring endoporus place is provided with circular arc flange, and circular arc flange is connected the circular arc chamfering on stepped hole.
4. the expansion valve of radial direction as claimed in claim 1 and axial dual-seal, is characterized in that: the stepped hole periphery of described body base has been threaded nut, is provided with elastomeric pad between nut end face and valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520283665.8U CN204665772U (en) | 2015-04-25 | 2015-04-25 | The expansion valve of radial and axial dual-seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520283665.8U CN204665772U (en) | 2015-04-25 | 2015-04-25 | The expansion valve of radial and axial dual-seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204665772U true CN204665772U (en) | 2015-09-23 |
Family
ID=54136149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520283665.8U Expired - Fee Related CN204665772U (en) | 2015-04-25 | 2015-04-25 | The expansion valve of radial and axial dual-seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204665772U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106678421A (en) * | 2017-01-12 | 2017-05-17 | 诸暨市亿霸电子阀门有限公司 | Electronic expansion valve with precision controlled through flow |
| CN107146669A (en) * | 2017-06-23 | 2017-09-08 | 宁波市镇海国创高压电器有限公司 | A kind of overvoltage protection device |
-
2015
- 2015-04-25 CN CN201520283665.8U patent/CN204665772U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106678421A (en) * | 2017-01-12 | 2017-05-17 | 诸暨市亿霸电子阀门有限公司 | Electronic expansion valve with precision controlled through flow |
| CN106678421B (en) * | 2017-01-12 | 2024-02-02 | 诸暨市亿霸电子阀门有限公司 | Electronic expansion valve with flow control precision |
| CN107146669A (en) * | 2017-06-23 | 2017-09-08 | 宁波市镇海国创高压电器有限公司 | A kind of overvoltage protection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20150923 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |