CN201121714Y - Break valve for refrigerating system - Google Patents
Break valve for refrigerating system Download PDFInfo
- Publication number
- CN201121714Y CN201121714Y CNU2007201999206U CN200720199920U CN201121714Y CN 201121714 Y CN201121714 Y CN 201121714Y CN U2007201999206 U CNU2007201999206 U CN U2007201999206U CN 200720199920 U CN200720199920 U CN 200720199920U CN 201121714 Y CN201121714 Y CN 201121714Y
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- CN
- China
- Prior art keywords
- valve body
- attaching nut
- seat
- valve
- 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 used in a refrigeration system, the stop valve comprises a valve body made of steel material and a valve rod arranged in the valve body, and the front end of the valve body and the lateral face of the valve body, which face the valve rod head, are respectively provided with a first liquid in-and-out port and a second liquid in-and-out port that are mutually communicated; the first liquid in-and-out port is provided with a section of red copper connecting pipe, which is connected with the valve body through an installing seat, and the tail part of the installing seat extending into the valve body is a sealing part contacted with the taper sealing surface of the valve rod head; the outer diameter of the sealing part of the installing seat presents an internal contraction shape, and an annular clearance is formed between the outer diameter of the sealing part and the inner diameter of the valve body cavity. The stop valve solves the problem that the sealing between the valve rod head and the installing seat on the valve body is not tight when the prior stop valve is closed, and the abrasion of the installing seat to the taper sealing surface of the valve rod head can be reduced, so as to prolong the service life.
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, and the material of stop valve valve body generally is steel or brass, and therefore, the stop valve of steel and copper tube are when welding, need the higher scolder of silver content, and in welding process, need to add a large amount of welding powders.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 brass stop valve 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, copper tube is welded on the liquid outlet and liquid entering hole of valve body by fitting seat, yet there is a problem in this stop valve, be to be linear sealing between stem head and the fitting seat, and the thickness of the hermetic unit of valve seat is thick, be easy to generate distortion through behind the high temperature, 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
The purpose of this utility model provides a kind of novel stop valve that is used for refrigeration system, and it can solve the problem of fitting seat and poor sealing between the taper stem head cooperates on the existing valve seat, generation leakage phenomenon when avoiding a valve to close.
Sealing effect when improving valve closing, the technical solution of the utility model is: 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 and second liquid entrance that can interconnect in the front end and the side of valve body of the valve body relative with stem head; The described first liquid entrance place is provided with one section red copper connecting tube, this red copper connecting tube is connected with valve body by a fitting seat, extend into the sealed department of afterbody for contacting of the described fitting seat in the valve body with the conical seal (contact) face of described stem head, it is characterized in that: the external diameter of the sealed department of described fitting seat is inwardly contraction-like, forms an annular gap between the internal diameter of the external diameter of sealing portion and valve body cavity.
In order to reduce destruction to the overlay coating of the valve rod conical surface, increase working life, the wall thickness of the sealed department of described fitting seat is 0.5-5.0mm, length is 0.5-5.0mm.
Wherein, the endoporus of the sealed department of described fitting seat to end face has fillet, and the radius of arc of this fillet is 〉=0.05mm ,≤0.3mm.
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 ℃.
Wherein, described second liquid entrance connects a red copper connecting tube, and this red copper connecting tube is connected with described second liquid entrance by a fitting seat.
Wherein, second liquid entrance of described valve body is provided with a twist-lock nut interface device that is connected in the import and export of liquid-storage container or compressor.
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.
Wherein, on screw thread list joint and end face that attaching nut's seat cooperates, be provided with seal ring; On the lower end surface of screw thread list joint or the upper-end surface of described attaching nut's seat is provided with the annular seal groove, and 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 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.
Stop valve described in the utility model, between the red copper connecting tube and the first liquid in-out mouth, be provided with a fitting seat, its front end is used to install the red copper connecting tube, its rear end is used for contacting with the conical seal (contact) face of stem head, thereby throttle down, be about to be located on the fitting seat with the conical seal (contact) face fitted seal portion of stem head, improvement of the present utility model is: the external diameter of the sealed department that extend into the fitting seat in the valve body that will contact with the stem head end face reduces, the external diameter that is sealed department is contraction-like, between the outer wall of the endoporus of valve body and sealed department, form the gap of a ring-type like this, thereby attenuate the sealed department wall thickness, when stem head seals with it, between this contracted sealed department and the valve body deformation space surplus is arranged.When the welding of itself and valve body, thin wall thickness helps that amount of deformation reduces behind high temperature, thereby improves 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.
The liquid in-out mouth of valve body of the present utility model side can be provided with a red copper connecting tube, the effect of red copper connecting tube be convenient to condenser in the welding of condensation tube, such stop valve is fit to be connected in the condenser pipe.Valve body is connected with the red copper connecting tube, 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 was welded on the valve body, it can be well welds with copper tube as condensation tube, welds between copper tube and the copper tube, require low to environment and scolder, both connectivity robustness are good, and sealing is strong, and do not need to carry out the processing of the residual welding powder of postwelding.
And, the liquid in-out mouth of side of valve body of the present utility model also can be provided with a twist-lock nut interface device, such stop valve is 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, be connected with screw thread list joint by nut, do not need welding operation, quick and easy for installation.
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:
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 sealed departments 61
Embodiment
Referring to Fig. 1, 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; Referring to Fig. 2,3, the afterbody of fitting seat 6 extend in the valve body 3, be used for contacting with the conical seal (contact) face of stem head 21, thereby throttle down, the afterbody of fitting seat 6 is the sealed department 61 that contacts with the conical seal (contact) face of stem head 21, it is inwardly contraction-like that the external diameter of sealed department 61 is, and forms an annular gap 33 between the internal diameter of the external diameter of sealed department 61 and valve body 3.The utility model is designed to the external diameter of sealed department 61 inwardly contraction-like, can make like this and form an annular gap 33 between the internal diameter of sealed department 61 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 sealed department 61 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 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.
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.
As another kind of mode of execution, the second liquid in-out mouth, 32 places of valve body of the present utility model also can be identical with the first liquid in-out mouth 31, by fitting seat one red copper connecting tube is set, its effect is the same with red copper connecting tube on the first liquid in-out mouth 31, and this stop valve is applicable in the condensation tube pipeline.
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 structure that the utility model is intended to the sealed department of the fitting seat 6 that will contact with stem head 21 conical seal (contact) faces changes the structural type of shrinking in the outer radial into; 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 (9)
1. 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 and second liquid entrance that can interconnect in the front end and the side of valve body of the valve body relative with stem head; The described first liquid entrance place is provided with one section red copper connecting tube, this red copper connecting tube is connected with valve body by a fitting seat, extend into the sealed department of afterbody for contacting of the described fitting seat in the valve body with the conical seal (contact) face of described stem head, it is characterized in that: the external diameter of the sealed department of described fitting seat is inwardly contraction-like, forms an annular gap between the internal diameter of the external diameter of sealing portion and valve body cavity.
2. the stop valve that is used for refrigeration system according to claim 1 is characterized in that: the wall thickness of the sealed department of described fitting seat is 0.5-5.0mm, and length is 0.5-5.0mm.
3. the stop valve that is used for refrigeration system according to claim 2 is characterized in that: the endoporus of the sealed department of described fitting seat to end face has fillet, and the radius of arc of this fillet is 〉=0.05mm ,≤0.3mm.
4. according to claim 1-3 each described stop valve that is used for refrigeration system wherein, it is characterized in that: the tapering of the conical seal (contact) face of stem head end is 20 ℃～70 ℃.
5. the stop valve that is used for refrigeration system according to claim 1 is characterized in that: described second liquid entrance connects a red copper connecting tube, and this red copper connecting tube is connected with described second liquid entrance by a fitting seat.
6. the stop valve that is used for refrigeration system according to claim 1 is characterized in that: second liquid entrance of described valve body is provided with a twist-lock nut interface device that is connected in the import and export of liquid-storage container or compressor.
7. the stop valve that is used for refrigeration system according to claim 6 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.
8. the stop valve that is used for refrigeration system according to claim 7 is characterized in that: be provided with seal ring on screw thread list joint and end face that attaching nut's seat cooperates; On the lower end surface of screw thread list joint or the upper-end surface of described attaching nut's seat is provided with the annular seal groove, and 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.
9. be used for the stop valve of refrigeration system according to claim 1 or 5, 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201999206U CN201121714Y (en) | 2007-12-05 | 2007-12-05 | Break valve for refrigerating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201999206U CN201121714Y (en) | 2007-12-05 | 2007-12-05 | Break valve for refrigerating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201121714Y true CN201121714Y (en) | 2008-09-24 |
Family
ID=40008941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201999206U Expired - Fee Related CN201121714Y (en) | 2007-12-05 | 2007-12-05 | Break valve for refrigerating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201121714Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506184A (en) * | 2010-10-25 | 2012-06-20 | 台州亨利技术制冷机械有限公司 | Improvements in relation to valves |
| CN107366750A (en) * | 2016-05-11 | 2017-11-21 | 浙江三花智能控制股份有限公司 | A kind of refrigeration system stop valve |
| CN113137509A (en) * | 2020-01-19 | 2021-07-20 | 盾安环境技术有限公司 | Stop valve |
-
2007
- 2007-12-05 CN CNU2007201999206U patent/CN201121714Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506184A (en) * | 2010-10-25 | 2012-06-20 | 台州亨利技术制冷机械有限公司 | Improvements in relation to valves |
| CN107366750A (en) * | 2016-05-11 | 2017-11-21 | 浙江三花智能控制股份有限公司 | A kind of refrigeration system stop valve |
| CN107366750B (en) * | 2016-05-11 | 2020-05-01 | 浙江三花智能控制股份有限公司 | Stop valve for refrigerating system |
| CN113137509A (en) * | 2020-01-19 | 2021-07-20 | 盾安环境技术有限公司 | Stop valve |
| CN113137509B (en) * | 2020-01-19 | 2023-09-15 | 盾安环境技术有限公司 | Stop valve |
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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: 20090508 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20090508 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: 20080924 Termination date: 20131205 |