CN201126027Y - Stop valve in refrigeration system - Google Patents
Stop valve in refrigeration system Download PDFInfo
- Publication number
- CN201126027Y CN201126027Y CNU2007201999193U CN200720199919U CN201126027Y CN 201126027 Y CN201126027 Y CN 201126027Y CN U2007201999193 U CNU2007201999193 U CN U2007201999193U CN 200720199919 U CN200720199919 U CN 200720199919U CN 201126027 Y CN201126027 Y CN 201126027Y
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- CN
- China
- Prior art keywords
- valve body
- attaching nut
- seat
- refrigeration system
- stop valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a stop valve in a refrigeration system, comprising a valve body made of steel materials, a valve rod provided with the valve body, front end and side of the valve body are respectively provided with a first liquid inlet outlet, and a second first liquid inlet outlet that are communicated with each other; the first liquid inlet outlet is provided with a copper connection pipe, the second first liquid inlet outlet of the valve body is provided with a helical locking nut interface device connected to a liquid storage device or inlet and outlet of a compressor. The utility model provides a stop valve suitable for installation and usage of the liquid storage device or the inlet and outlet of the compressor, and is able to settle the issues that the current stop valve for the refrigeration system has troubles in welding with the copper pipe which is taken as a condensation pipe and has the possibility to influence other welding members on the valve body.
Description
Technical field
The utility model relates to the parts in a kind of refrigeration system, relates in particular to a kind of graduating valve that is used for refrigeration system.
Background technique
In refrigeration system, condensation tube is caused by copper tube, and refrigeration agent leads in copper tube.For the ease of understanding the situation of condensation tube inner refrigerant, generally in relatively large condensation tube, need to install measuring instrument, measuring instrument in use can damage sometimes.In order in the process of maintenance instrument, to prevent the leakage of refrigeration agent, between instrument and condensation tube, need to install stop valve, like this, in the process of maintenance instrument, can block refrigeration agent under the effect at stop valve.In addition, copper tube also disrepair phenomenon can occur in the using process for a long time, for the ease of changing damaged copper tube, the way of custom is that several stop valves are installed in segmentation in whole condensation tube, in the process of changing copper tube, can close the correspondent section stop valve like this, thereby exchange damaged copper tube for, and do not need the refrigeration agent in the whole condensation tube is changed, saved cost.
Stop valve and copper tube generally link together by welding manner, because the corresponding volume of copper tube is bigger, both carry out in the environment that is exposing.The material of stop valve valve body generally is steel or yellow steel, and when stop valve was steel, itself and copper tube needed the higher scolder of silver content when welding, and needed to add a large amount of welding powders in welding process.This scolder price is higher on the one hand, and after welding was finished, remaining welding powder cleaning work was cumbersome on the other hand, can corrode valve body if welding powder remains on the valve body, also might sneak in the refrigeration agent, has influence on the normal operation of refrigeration system; When the valve body that cuts valve was brass, when brass and copper tube welded, the zinc that is contained in the brass also might evaporate.And the price of brass is also higher with respect to steel material, the stop valve product price height of making.
For solve the existing stop valve that is used for refrigeration system with the troublesome poeration during in welding as the copper tube of condensation tube, might have influence on the defective of other weldment on the valve body, ZL200520116559.7 discloses a kind of stop valve that is used for refrigeration system, this stop valve is to weld one section copper tube respectively on the liquid outlet of the valve body that will make at steel material and the liquid entering hole, like this, when welding, this section copper tube and valve body be convenient to build artificially an enclosed environment, be convenient to make both to be welded together more conveniently, and connectivity robustness is good, valve body is being advanced, when section copper tube and the condensation tube on the liquid outlet welded, this section copper tube can be easily welds with copper tube as condensation tube.The structure of this valve only is applicable in the circulation loop of refrigeration system of air-conditioning, and for the stop valve of the import and export of liquid-storage container or compressor, existing stop valve one end and cooling line connect, the other end and liquid-storage container or compressor joint weld, have the problems referred to above equally, therefore a kind of be suitable for the import and export of liquid-storage container or compressor and can solve the existing stop valve that is used for refrigeration system with the troublesome poeration and dock difficult stop valve with liquid-storage container or compressor and become required during in welding as the copper tube of condensation tube.
Also there is a problem in existing stop valve, promptly be linear sealing between stem head and the method seat, and valve seat part thickness is thick, is easy to generate distortion through behind the high temperature, and is bad with taper stem head fitted seal effect; And when closing, the potted line that valve seat cooperates with the taper stem head can reduce working life to the destruction of stem surface coating.
Summary of the invention
Primary and foremost purpose of the present utility model provides a kind of novel stop valve that is used for refrigeration system, its can solve equally the existing stop valve that is used for refrigeration system with as the copper tube of condensation tube troublesome poeration during in welding, might have influence on the problems such as defective of other weldment on the valve body, and be applicable to the installation and the use of the import and export of liquid-storage container or compressor.
For solving the problems of the technologies described above, the technical solution of the utility model: a kind of stop valve that is used for refrigeration system, comprise the valve body made by steel material, be located at the valve rod in the valve body, be respectively equipped with first liquid entrance, second liquid entrance that can interconnect in the front end and the side of valve body; It is characterized in that: be provided with one section red copper connecting tube at the described first liquid entrance place, on second liquid entrance of valve body, be provided with a twist-lock nut interface device that is connected in the import and export of liquid-storage container or compressor.
Wherein, described twist-lock nut interface device comprises attaching nut's seat, an attaching nut, a screw thread list joint; The upper end of described attaching nut's seat is provided with an outer convex ring shape seam, described attaching nut's lower end endoporus has a convex ring-type seam, the lower end of described attaching nut's seat is inserted in the nut bore of described attaching nut's upper end with second liquid entrance welding of described valve body and by the outer convex ring shape seam of attaching nut's seat and attaching nut's lower end endoporus convex ring-type seam and the attaching nut is fixed on described attaching nut's seat, and described attaching nut's upper end screw thread is connected with screw thread list joint.
For the sealing that connects between the import and export that improve the valve body second liquid in-out mouth and liquid-storage container or compressor, as preferably, on screw thread list joint and end face that attaching nut's seat cooperates, be provided with seal ring.
Wherein, be provided with the annular seal groove on the lower end surface of screw thread list joint or on the upper-end surface of described attaching nut's seat, described seal ring is located in the described annular seal groove; The lower end surface of the upper-end surface of the described attaching nut seat relative with described seal groove or screw thread list joint is provided with an annular boss.
For the ease of the welding of red copper connecting tube, as preferably, the red copper connecting tube on the described first liquid in-out mouth is connected with valve body by a fitting seat, and described fitting seat is welded on the valve body, and the red copper connecting tube is welded on the fitting seat.
Sealing effect when improving valve closing, as preferably, described fitting seat end has a ring-type seam, this ring-type seam cooperates with the endoporus of the valve body first liquid in-out mouth, with the described ring-type seam outer end of the conical seal (contact) face contact seal of stem head end be the contraction flow region that shrinks in the outer radial, form an annular gap between the internal diameter of this contraction flow region and valve body cavity.
Best, the wall thickness of the contraction flow region of described fitting seat outer end is 0.5-5.0mm, and length is 0.5-5.0mm.
In order to reduce destruction to the overlay coating of the valve rod conical surface, increase working life, it is planar that the sealing bight of this ring-type seam end face that contacts with the conical seal (contact) face of described valve rod end preferably is circular arc, and the radius of arc of this arc surface is 〉=0.05mm ,≤0.3mm.
For the ease of docking between the coolant pipe of the red copper connecting tube on the valve body and air-conditioning condenser, the outer end of described red copper connecting tube is provided with a reducing or enlarging.Best, the radius of described enlarging deducts radius that the radius of being located at red copper connecting tube on the valve body or the described radius of being located at red copper connecting tube on the valve body deduct reducing, and to equal to be located at the ancient piece of jade, round, flat and with a hole in its centre of red copper connecting tube on the valve body thick; In other words: the external diameter of the internal diameter of described enlarging and red copper connecting tube rear end is complementary; The external diameter of the external diameter of described reducing and red copper connecting tube rear end is complementary.
In order to increase the sealing area between stem head and the fitting seat, improve sealing effect, the tapering of the conical seal (contact) face of stem head end is 20 ℃～70 ℃.
The utility model is owing to adopt technique scheme, a liquid in-out mouth of valve body is provided with a red copper connecting tube, and another liquid in-out mouth is provided with a twist-lock nut interface device, be used for being connected with the import and export of liquid-storage container or compressor, when mounted promptly, at first the red copper connecting tube is welded on the liquid in-out mouth of valve body, be fixed on the attaching nut of twist-lock nut interface device on another liquid in-out mouth of valve body by attaching nut's seat, the tail end of screw thread list joint is welded on earlier in the import and export of liquid-storage container or compressor, spin together by screw thread list joint and attaching nut, thereby this liquid in-out mouth of valve body is communicated with the import and export of liquid-storage container or compressor, this structure, valve body is connected with the red copper connecting tube on the one hand, both volumes are less, environment of sealing is built in the welding that can be used as both, in this enclosed environment, be convenient to both are welded and do not have influence on other welding on the valve body, firm welding is good, and be convenient to welding in batches, service speed is fast, after the red copper connecting tube is welded on the valve body, it can be well welds with copper tube as condensation tube, weld between copper tube and the copper tube, require low to environment and scolder, both connectivity robustness are good, sealing is strong, and does not need to carry out the processing of the residual welding powder of postwelding.Be connected with screw thread list joint by nut on the other hand, do not need welding operation, and quick and easy for installation.
The utility model further is provided with a fitting seat and is used to install the red copper connecting tube between the red copper connecting tube and the first liquid in-out mouth, its role is to be convenient to the welding of red copper connecting tube and valve body, install, and the annular stopper end that fitting seat extend in the valve body inner bore cooperates with the tapered end face of valve rod, be used for throttle down, be about to be located on the fitting seat with the conical surface fitted seal portion of valve rod head, and the relative valve body inner bore in this end is contraction-like, make and form a gap between hermetic unit and the valve body inner bore, and wall thickness is thinner, when stem head seals with it, can and valve body between the deformation space surplus is arranged, and that thin wall thickness helps when it welds with valve body behind high temperature amount of deformation is little, is convenient to improve sealing effect.And then it is planar that the potted line portion of fitting seat is made as circular arc, helps reducing its wearing and tearing to the stem head end, increases the service life.
Description of drawings
Fig. 1 is the longitudinal sectional view that the utility model is used for the stop valve of refrigeration system;
Fig. 2 is the partial enlarged drawing of fitting seat and valve rod head sealing part;
Fig. 3 is the I place partial enlarged drawing of Fig. 2.
Wherein:
Valve body 3 first liquid entrances 31 second liquid entrances 32
Outer convex ring shape seam 411 attaching nuts 42 convex ring-type seams 421
5 enlargings 51 of seal ring 44 red copper connecting tubes
Fitting seat 6 ring-type seams 61 contraction flow regions 611
Embodiment
Referring to Fig. 1, as can be seen from Figure, the stop valve that the utility model is used for refrigeration system comprise steel valve body 3, be located at the valve rod 2 in the valve body 3 and be located at the sealing cap 1 of valve body afterbody, be respectively equipped with first liquid entrance 31, second liquid entrance 32 that can interconnect in the front end and the side of valve body 3.Be provided with a red copper connecting tube 5 at first liquid in-out mouth 31 places, this red copper connecting tube 5 is welded on the valve body 3 by fitting seat 6; The second liquid in-out mouth, 32 places are provided with twist-lock nut interface device 4, twist-lock nut interface device 4 comprises attaching nut's seat 41, one attaching nut 42, one screw thread list joint 43, the upper end of attaching nut's seat 41 is provided with an outer convex ring shape seam 411, second liquid entrance 32 of its lower end and valve body welds together, attaching nut 42 lower end endoporus has a convex ring-type seam 421, the internal diameter of convex ring-type seam 421 and the external diameter of attaching nut's seat 41 are complementary, the external diameter of the outer convex ring shape seam 411 of attaching nut 42 internal diameter and attaching nut's seat 41 is complementary, second liquid entrance, 32 welding with described valve body 3 are inserted in the lower end of attaching nut's seat 41 in the nut bore of described attaching nut's 42 upper end, at this moment, attaching nut 42 is enclosed in outside attaching nut's seat 41 by the outer convex ring shape seam 411 of attaching nut's seat 41, and attaching nut 42 upper end screw thread is connected with screw thread list joint 43.And, on screw thread list joint 43 and end face that attaching nut's seat 42 cooperates, be provided with seal ring 44, in the present embodiment, seal ring 44 is located in the annular seal groove 431 of lower end surface of screw thread list joint 43, in the upper-end surface of attaching nut's seat 42, the position relative with seal groove 431 be provided with an annular boss 422, is used to compress seal ring, the setting of seal ring also can be reverse, be that annular seal groove is located on attaching nut's seat 41, the annular boss that compresses seal ring is located on the screw thread list joint 43.
Referring to Fig. 2,3, the end of the fitting seat 6 at the first liquid in-out mouth, 31 places of valve body 3 has a ring-type seam 61, this ring-type seam 61 cooperates with the endoporus of valve body 3 first liquid in-out mouths 31 and extend in the valve body 3, its end face be used for valve body 3 in the end face contact seal of stem head 21, thereby throttle down.The utility model is designed to the inwardly contraction flow region 611 of contraction with the external diameter of ring-type seam 61 outer ends, can make like this and form an annular gap 33 between the internal diameter of contraction flow region 611 and valve body 3 cavitys, when stem head 21 seals with it, because the gap exists, can and valve body 3 between the deformation space surplus is arranged.Present embodiment, the wall thickness B of contraction flow region 611 is 2.0mm, and length A is 2.0mm, after the contraction, adopts thin wall thickness, can also make fitting seat 6 and valve body 3 through after the high-temperature soldering, and the amount of deformation of the potted line of its end reduces, and improves sealing effect.
For the potted line that the reduces fitting seat 6 end faces destruction to the overlay coating of stem head 21 conical surfaces, it is planar that the potted line of fitting seat 6 end faces (sealing bight) preferably is circular arc, and the radius of arc R of this arc surface is 〉=0.05mm ,≤0.3mm, present embodiment is 0.1mm.The tapering C of the conical seal (contact) face of stem head 21 ends of Pei Heing is 70 ℃ with it, and the sealing area that adopts the tapering sealing surface and increase stem head and adapter improves sealing effect.
In addition, referring to Fig. 1, the outer end that is located at the red copper connecting tube 5 of valve body 3 first liquid in-out mouths 31 is provided with an enlarging 51, and the ancient piece of jade, round, flat and with a hole in its centre that the radius that the radius of enlarging 51 deducts red copper connecting tube 5 afterbodys equals to be located at red copper connecting tube 5 is thick, the internal diameter of enlarging just 51 equates with the external diameter of red copper connecting tube 5 afterbodys, like this, be welded on red copper connecting tube 5 on the fitting seat 6 when welding as the red copper of condensation tube, can be inserted into red copper connecting tube in this enlarging 51, increase connectivity robustness between the two as condensation tube.Certainly, can be used as another kind of the selection, the outer end of red copper connecting tube 5 also can be a reducing, the external diameter of this reducing place equals the internal diameter of copper tube, when red copper connecting tube 5 welds with red copper connecting tube as condensation tube, can be inserted into this reducing in the red copper connecting tube as condensation tube, can increase connectivity robustness between the two.
Above-mentioned embodiment of the present utility model is a preferred embodiment of the present utility model; and non-limiting protection domain of the present utility model; the utility model aims to provide a kind of stop valve that adopts twist-lock nut interface to be connected with liquid-storage container or compressor; and can make stop valve and liquid-storage container or compressor easy to connect; and the convenient welding between the condensation tube; processing after the welding is also easier, has simple in structure, safe in utilization, intensity advantage of higher.And, the structure of the contact segment of the fitting seat 6 that the utility model contacts with stem head 21 conical seal (contact) faces (being the annular stopper end) changes the structural type of shrinking in the outer radial into, be intended to make it on the one hand and valve body inner bore between leave the gap, make this segment thickness attenuate on the other hand, after the stem head end heads into, make it and valve body between leave a deformation space, and little, thereby improve sealing effect through the amount of deformation that should receive troops under one's command after the high-temperature soldering.
Claims (10)
1. stop valve that is used for refrigeration system comprises the valve body made by steel material, is located at the valve rod in the valve body, is respectively equipped with first liquid entrance, second liquid entrance that can interconnect in the front end and the side of valve body; It is characterized in that: be provided with one section red copper connecting tube at the described first liquid entrance place, on second liquid entrance of valve body, be provided with a twist-lock nut interface device that is connected in the import and export of liquid-storage container or compressor.
2. the stop valve that is used for refrigeration system according to claim 1 is characterized in that: described twist-lock nut interface device comprises attaching nut's seat, an attaching nut, a screw thread list joint; The upper end of described attaching nut's seat is provided with an outer convex ring shape seam, described attaching nut's lower end endoporus has a convex ring-type seam, the lower end of described attaching nut's seat is inserted in the nut bore of described attaching nut's upper end with second liquid entrance welding of described valve body and by the outer convex ring shape seam of attaching nut's seat and attaching nut's lower end endoporus convex ring-type seam and the attaching nut is fixed on described attaching nut's seat, and described attaching nut's upper end screw thread is connected with screw thread list joint.
3. the stop valve that is used for refrigeration system according to claim 2 is characterized in that: be provided with seal ring on screw thread list joint and end face that attaching nut's seat cooperates.
4. the stop valve that is used for refrigeration system according to claim 3 is characterized in that: be provided with the annular seal groove on the lower end surface of screw thread list joint or on the upper-end surface of described attaching nut's seat, described seal ring is located in the described annular seal groove; The lower end surface of the upper-end surface of the described attaching nut seat relative with described seal groove or screw thread list joint is provided with an annular boss.
5. according to claim 1-4 each described stop valve that is used for refrigeration system wherein, it is characterized in that: the red copper connecting tube on the described first liquid in-out mouth is connected with valve body by a fitting seat, described fitting seat is welded on the valve body, and the red copper connecting tube is welded on the fitting seat.
6. the stop valve that is used for refrigeration system according to claim 5, it is characterized in that: described fitting seat end has a ring-type seam, this ring-type seam cooperates with the endoporus of the valve body first liquid in-out mouth, with the described ring-type seam outer end of the conical seal (contact) face contact seal of stem head end be the contraction flow region that shrinks in the outer radial, form an annular gap between the internal diameter of this contraction flow region and valve body cavity.
7. the stop valve that is used for refrigeration system according to claim 5 is characterized in that: the wall thickness of the contraction flow region of described fitting seat outer end is 0.5-5.0mm, and length is 0.5-5.0mm.
8. the stop valve that is used for refrigeration system according to claim 6, it is characterized in that: it is planar that the sealing bight of this ring-type seam end face that contacts with the conical seal (contact) face of described valve rod end is circular arc, and the radius of arc of this arc surface is 〉=0.05mm ,≤0.3mm.
9. according to claim 1-4 each described stop valve that is used for refrigeration system wherein, it is characterized in that: the outer end of described red copper connecting tube is provided with a reducing or enlarging; The external diameter of the internal diameter of described enlarging and red copper connecting tube rear end is complementary; The external diameter of the external diameter of described reducing and red copper connecting tube rear end is complementary.
10. the stop valve that is used for refrigeration system according to claim 6 is characterized in that: the tapering of the conical seal (contact) face of stem head end is 20 ℃～70 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201999193U CN201126027Y (en) | 2007-12-05 | 2007-12-05 | Stop valve in refrigeration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201999193U CN201126027Y (en) | 2007-12-05 | 2007-12-05 | Stop valve in refrigeration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201126027Y true CN201126027Y (en) | 2008-10-01 |
Family
ID=39999496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201999193U Expired - Fee Related CN201126027Y (en) | 2007-12-05 | 2007-12-05 | Stop valve in refrigeration system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201126027Y (en) |
-
2007
- 2007-12-05 CN CNU2007201999193U patent/CN201126027Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: TAIZHOU ANZHOU MECHINERY CO.,LTD. Free format text: FORMER OWNER: LI WEIJUN Effective date: 20090515 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20090515 Address after: Taizhou County, Zhejiang City, Xianju province Guan Shan village, zip code: 317300 Patentee after: Taizhou Annjoe Machinery Co., Ltd. Address before: No. 175, tube mountain village, Nanfeng street, Xianju County, Zhejiang Province, China: 317300 Patentee before: Li Weijun |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081001 Termination date: 20131205 |