CN207687442U - Ultralow temperature sylphon seal tiny flow quantity angle valve with insulation construction - Google Patents
Ultralow temperature sylphon seal tiny flow quantity angle valve with insulation construction Download PDFInfo
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- CN207687442U CN207687442U CN201721902060.8U CN201721902060U CN207687442U CN 207687442 U CN207687442 U CN 207687442U CN 201721902060 U CN201721902060 U CN 201721902060U CN 207687442 U CN207687442 U CN 207687442U
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Abstract
The utility model announces a kind of ultralow temperature sylphon seal tiny flow quantity angle valve with insulation construction.Valve body upper end is fixed with extension tubing；Extension tubing upper end is fixed with terminal pad；Terminal pad upper end is connected with valve deck；Core bar is installed in extension tubing, the lower end of core bar is mounted in the core bar installation cavity of valve body, and the upper end of core bar passes through valve deck；It is equipped with thermal insulation material in extension tubing between lower part and core bar, extension tubing internal upper part sets that there are one be connected to bellows on core bar；Filler assembly is equipped with inside valve deck between core bar.The utility model which has a compact structure and a reasonable design, flow path is simple, and flow resistance is small, install convenient；It can be effectively reduced hot transmission, malformation and medium boosting phenomenon extremely caused by temperature change is eliminated, ensure the heat-insulating property and cooling performance of valve；Prevent from causing the generation of environmental pollution phenomenon because of dielectric leakage, it is ensured that personal safety.Cryogenic system technical controlling and experiment occasion are automated suitable for ethylene petrochemical industry, air separation, LNG liquefied natural gas etc..
Description
Technical field
The utility model is related to a kind of regulating valve, specifically a kind of ultralow temperature sylphon seal with insulation construction is small
Flow angle valve is suitable for the automation cryogenic system technology control such as ethylene petrochemical industry, air separation, LNG liquefied natural gas, liquefied petroleum
System and experiment occasion.
Background technology
Existing ultralow temperature tiny flow quantity angle type control valve mainly by valve body, valve deck, valve rod, core assembly, valve seat, fill out
The parts such as material, gasket form.Valve body lower end is equipped with import, and upper end is equipped with outlet, using metal and gold between spool and valve seat
The hard sealing structure of category, core assembly are oriented to using the guide sleeve on valve deck, can the linear movement up and down in valve, be adjusted and
Control the flow and pressure of cryogenic media.But the major defect of this valve is：When the ultralow temperature medium with high flow rate is long
Between when passing through valve, heat-insulating property and cooling performance are undesirable, and sealing performance is poor, it is difficult to meet domestic and international relevant automatic
Control actual requirement of the enterprise for ultralow temperature angle type control valve in terms of energy conservation and environmental protection, safety in production.
Invention content
In order to solve the above technical problems, existing ultralow temperature tiny flow quantity angle valve heat-insulating property and cooling performance is overcome to pay no attention to
Think, the defect of poor sealing performance, the utility model offer is a kind of to meet ultralow temperature（Minimum temperature：-267℃）Liquid under operating mode
The ultralow temperature sylphon seal tiny flow quantity angle valve with insulation construction that the media such as oxygen, liquid nitrogen, liquid helium, liquid hydrogen use.
The utility model is achieved through the following technical solutions：A kind of ultralow temperature sylphon seal with insulation construction is small
Flow angle valve, including valve body are provided with import, outlet on valve body, core bar installation cavity are provided in valve body；The valve body upper end is fixed with
Extension tubing；The extension tubing upper end is fixed with terminal pad；The terminal pad upper end is connected with valve deck；It is installed in the extension tubing
There are core bar, the lower end of core bar to be mounted in the core bar installation cavity of valve body, the upper end of core bar passes through valve deck；Lower part in the extension tubing
It is equipped with thermal insulation material between core bar, extension tubing internal upper part sets that there are one be connected to bellows on core bar；Inside the valve deck
Filler assembly is equipped between core bar.
It is further：The core bar includes upper valve rod；The lower end of the upper valve rod is set there are one the shaft shoulder, upper valve rod lower end
Face is provided with threaded hole；The threaded hole of upper valve rod lower end is connected with lower valve rod；It is equipped between the lower valve rod and upper valve rod threaded hole
Straight pin, the lower end of lower valve rod are equipped with the spool coordinated with valve body；The bellows, bellows lower end are set on the upper valve rod
It is against on the shaft shoulder；The bellows upper end is connected with the convergence set being sleeved on upper valve rod, and linking set upper side, which is connected with, to be sleeved on
Pressing sleeve on upper valve rod.Connection between bellows and the shaft shoulder, convergence set, connection and convergence set and pressing sleeve is all made of welding
Mode.
Guide sleeve is installed between the lower end and valve body of the lower valve rod.
The thermal insulation material is located between lower valve rod and extension tubing；Thermal insulation material upper and lower side is equipped with adjusting block, is keeping the temperature
There are multiple arranged for interval adjusting blocks in material.
Columnar cushion block I, cushion block II are set in the extension tubing；I lower end of the cushion block is against the adjusting of top side
On block；II lower end of the cushion block is against I upper end of cushion block, and cushion block II is sleeved on outside bellows.
The pressing sleeve is clipped between terminal pad and valve deck, is bolted between terminal pad and valve deck；It is upper and lower in pressing sleeve
End is equipped with grooved metal gasket.
The valve deck is provided with installation through-hole, and core bar passes through valve deck installation through-hole；The filler assembly is mounted on the peace of valve deck
It fills in through-hole；Filler assembly include the Packing seat installed successively from the bottom to top, packing padding, spacer, lower filler, middle filler, on
Filler；The pressure ring being sleeved between core bar and valve deck is equipped in the upper end of the upper filler；Connected by screw thread in the valve deck upper end
It is equipped with bonnet nut；Disc spring is equipped between the bonnet nut lower end and pressure ring upper end.
The packing padding is dipping teflon asbestos；The lower filler, middle filler, upper filler are V-type polytetrafluoro
Ethylene.
Round nut is installed outside the valve deck.
The core bar upper end is connected with travel indicator.
Compared with prior art, the utility model has the beneficial effects that：
1. which has a compact structure and a reasonable design, flow path is simple, and flow resistance is small, install convenient.The ultralow temperature of same bore specification is micro-
Small flow angle-style can match the core bar there are many metered flow, only need to change core bar, you can meet kinds of processes operation and require；
2. being equipped with unique heat preservation energy-saving structure, it can be effectively reduced hot transmission, eliminated caused by temperature change
Malformation and medium boosting phenomenon extremely, ensure the heat-insulating property and cooling performance of valve；
3. using corrugated tube sealing structure, while stuffing-box uses（V-type polytetrafluoroethylene (PTFE)+dipping teflon asbestos
Packing）Composite structure form can thoroughly prevent the possibility that medium is leaked out from stem movement gap, meet kinds of processes behaviour
It is required, prevents the generation for causing environmental pollution phenomenon because of dielectric leakage, it is ensured that personal safety；
4. cut-out performance is good, close tight.Leakage class disclosure satisfy that featuring rigid cutting-off, zero leakage index request；
5. core bar component uses pulled core structure, it is not required to dismounting valve body and extends tube portion, you can quickly and easily will damage
The parts such as core bar extract out and replace, to simplify maintenance procedure and process, reduce equipment down time so that maintenance dimension
Nurse makees simple and practicable.The design structure is particularly suitable for the ultralow temperature occasion of ice chest operating mode；
6. facilitating adapted delicate structure and the 812 serial multiple springs that positive and negative effect can be changed at user scene pneumatically executing
Mechanism；The 827 Series Intelligent valve positioners and 824 II serial electropneumatic valve positioners that integration can be worn, be easy to verification.
The valve positioner of domestic and international various models and other attachmentes can be worn；
7. specified value≤0.001 Cv of the utility model, temperature in use：- 100~-267 DEG C, especially suitable for ethylene stone
Change, air separation, LNG liquefied natural gas, liquefied petroleum etc. automate cryogenic system technical controlling and experiment occasion.
Description of the drawings
Fig. 1 is the utility model structure diagram；
Fig. 2 is core bar structure schematic diagram；
Fig. 3 is the enlarged drawing of filler assembly part in Fig. 1；
Fig. 4 is the enlarged drawing of thermal insulation material part in Fig. 1.
In figure：1 valve body, 2 guide sleeves, 3 adjusting blocks, 4 thermal insulation materials, 5 extension tubings, 6 core bars, 6-1, upper valve rod；6-2, pressure
Set；6-3, convergence set；6-4, bellows；6-5, the shaft shoulder；6-6, straight pin；6-7, lower valve rod；7 cushion blocks I, the connection of 8 cushion blocks II, 9
Disk, 10 grooved metal gaskets, 11 valve decks, 11-1, pressure ring；11-2, disc spring；11-3, bonnet nut；12 filler assemblies, 12-1, filler
Pad；12-2, packing padding；12-3, spacer；12-4, lower filler；12-5, middle filler；12-6, upper filler；13 round nuts, 14 rows
Journey indicator.
Specific implementation mode
It is a specific embodiment of the utility model below, the utility model is described further in conjunction with attached drawing.
As shown in Figure 1, a kind of ultralow temperature sylphon seal tiny flow quantity angle valve with insulation construction, including valve body 1, valve
It is provided with import, outlet on body 1, is provided with core bar installation cavity in valve body 1, channel is streamlined；Weld extension tubing 5 in 1 upper end of valve body；
5 upper end of extension tubing is welded to connect disk 9；9 upper end of terminal pad is connected with valve deck 11；Core bar 6 is installed in extension tubing 5, core bar 6
Lower end is mounted in the core bar installation cavity of valve body 1, and the upper end of core bar 6 passes through valve deck 11；In extension tubing 5 between lower part and core bar 6
Equipped with thermal insulation material 4,5 internal upper part of extension tubing sets that there are one be connected to bellows 6-4 on core bar 6；11 inside of valve deck and core bar 6
Between be equipped with filler assembly 12.6 upper end of core bar is connected with travel indicator 14.
Shown in Fig. 2, core bar 6 includes upper valve rod 6-1；The lower end of upper valve rod 6-1 is set there are one shaft shoulder 6-5, upper valve
The lower faces bar 6-1 are provided with threaded hole；The threaded hole of the lower ends upper valve rod 6-1 is connected with lower valve rod 6-7；Lower valve rod 6-7 and upper valve rod
Straight pin 6-6 is equipped between 6-1 threaded holes, the lower end of lower valve rod 6-7 is equipped with the spool coordinated with valve body 1；It is covered on upper valve rod 6-1
Bellows 6-4 is filled, the lower ends bellows 6-4 are against on shaft shoulder 6-5；The upper ends bellows 6-4, which are connected with, to be sleeved on upper valve rod 6-1
The upper end convergence set 6-3, convergence set 6-3 is connected with the pressing sleeve 6-2 being sleeved on upper valve rod 6-1.Bellows 6-4 and shaft shoulder 6-5, rank
The connection between connection and convergence set 6-3 and pressing sleeve 6-2 between female connector 6-3 is all made of welding manner.
Guide sleeve 2 is installed between the lower end and valve body 1 of lower valve rod 6-7.Shown in Fig. 3, thermal insulation material 4 is located at down
Between valve rod 6-7 and extension tubing 5；4 upper and lower side of thermal insulation material is equipped with adjusting block 3, also has multiple interval cloth in thermal insulation material 4
Set adjusting block 3.Thermal insulation material 4 uses low temperature moulding polyurethane foam heat insulation material or PCTFE materials.It is set in extension tubing 5
Columnar cushion block I 7, cushion block II 8；I 7 lower end of cushion block is against on the adjusting block 3 of top side；II 8 lower end of cushion block is against cushion block I 7
Upper end, cushion block II 8 are sleeved on outside bellows 6-4.Pressing sleeve 6-2 is clipped between terminal pad 9 and valve deck 11, terminal pad 9 and valve deck 11
Between be bolted；It is equipped with grooved metal gasket 10 in pressing sleeve 6-2 upper and lower ends.
Shown in Fig. 4, round nut 13 is installed outside valve deck 11, valve deck 11 is provided with installation through-hole, and core bar 6 passes through valve deck
11 installation through-holes；Filler assembly 12 is mounted in the installation through-hole of valve deck 11；Filler assembly 12 includes installing successively from the bottom to top
Packing seat 12-1, packing padding 12-2, spacer 12-3, lower filler 12-4, middle filler 12-5, upper filler 12-6.Packing padding
12-2 is dipping teflon asbestos；Lower filler 12-4, middle filler 12-5, upper filler 12-6 are V-type polytetrafluoroethylene (PTFE).Upper
The upper end of filler 12-6 is equipped with the pressure ring 11-1 being sleeved between core bar 6 and valve deck 11；It is connected through a screw thread and sets in 11 upper end of valve deck
There is bonnet nut 11-3；Disc spring 11-2 is equipped between the lower ends bonnet nut 11-3 and the upper ends pressure ring 11-1.
Core bar topmost can with executing agency with connect, under the linear drives of executing agency, core bar can utilize guide sleeve 2 and
Filler assembly 12 is oriented to, and is moved reciprocatingly and linearly from top to bottom in valve body, and the flow and pressure of medium are adjusted and control.
The utility model is designed using thermal-insulating type macrochoanitic valve cover structure, can be effectively reduced hot transmission, eliminate due to temperature change and
The generation of caused malformation and medium boosting phenomenon extremely, ensures the heat-insulating property and cooling performance of valve.This reality simultaneously
With novel sealing structure use bellows and stuffing-box double sealing structure, can thoroughly take precautions against medium from stem movement gap to
The possibility of external leakage meets a variety of low temperature process operations and requires, prevents from causing environmental pollution existing because of ultralow temperature dielectric leakage
The generation of elephant, it is ensured that personal safety.VI grade of leakage class in GB/T4213-2008 standards may be implemented, and can reach tight
The index of cut-out, zero leakage, to ensure that valve reliably works under ultralow-temperature operation conditions.To extend the valve overall work service life
Period has expanded the use scope of ultralow temperature tiny flow quantity angle type control valve product.
Claims (10)
1. a kind of ultralow temperature sylphon seal tiny flow quantity angle valve with insulation construction, including valve body（1）, valve body（1）On open
There are import, outlet, valve body（1）Inside it is provided with core bar installation cavity；It is characterized in that：The valve body（1）Upper end is fixed with extension tubing
（5）；The extension tubing（5）Upper end is fixed with terminal pad（9）；The terminal pad（9）Upper end is connected with valve deck（11）；It is stretched described
Long tube（5）Core bar is inside installed（6）, core bar（6）Lower end be mounted on valve body（1）Core bar installation cavity in, core bar（6）Upper end
Across valve deck（11）；The extension tubing（5）Interior lower part and core bar（6）Between be equipped with thermal insulation material（4）, extension tubing（5）Internal upper part
If there are one be connected to core bar（6）On bellows（6-4）；The valve deck（11）Internal and core bar（6）Between be equipped with filler group
Part（12）.
2. the ultralow temperature sylphon seal tiny flow quantity angle valve according to claim 1 with insulation construction, feature exist
In：The core bar（6）Including upper valve rod（6-1）；The upper valve rod（6-1）Lower end set there are one the shaft shoulder（6-5）, upper valve rod
（6-1）Lower face is provided with threaded hole；Upper valve rod（6-1）The threaded hole of lower end is connected with lower valve rod（6-7）；The lower valve rod（6-
7）With upper valve rod（6-1）Straight pin is equipped between threaded hole（6-6）, lower valve rod（6-7）Lower end be equipped with and valve body（1）Cooperation
Spool；The upper valve rod（6-1）The upper suit bellows（6-4）, bellows（6-4）Lower end is against the shaft shoulder（6-5）Upper welding；
The bellows（6-4）Upper end, which is connected with, is sleeved on upper valve rod（6-1）On convergence set（6-3）Welding, convergence set（6-3）Upper end
It is connected with and is sleeved on upper valve rod（6-1）On pressing sleeve（6-2）；Bellows（6-4）With the shaft shoulder（6-5）, convergence set（6-3）, company
It connects and convergence set（6-3）With pressing sleeve（6-2）Between connection be all made of welding manner.
3. the ultralow temperature sylphon seal tiny flow quantity angle valve according to claim 2 with insulation construction, feature exist
In：The lower valve rod（6-7）Lower end and valve body（1）Between guide sleeve is installed（2）.
4. the ultralow temperature sylphon seal tiny flow quantity angle valve according to claim 2 with insulation construction, feature exist
In：The thermal insulation material（4）It is located at lower valve rod（6-7）With extension tubing（5）Between；Thermal insulation material（4）Upper and lower side is equipped with adjusting
Block（3）, in thermal insulation material（4）It is interior to also have multiple arranged for interval adjusting blocks（3）.
5. the ultralow temperature sylphon seal tiny flow quantity angle valve according to claim 4 with insulation construction, feature exist
In：The extension tubing（5）Inside it is set with columnar cushion block I（7）, cushion block II（8）；The cushion block I（7）Lower end is against top side
Adjusting block（3）On；The cushion block II（8）Lower end is against cushion block I（7）Upper end, cushion block II（8）It is sleeved on bellows（6-4）Outside.
6. the ultralow temperature sylphon seal tiny flow quantity angle valve according to claim 2 with insulation construction, feature exist
In：The pressing sleeve（6-2）It is clipped in terminal pad（9）And valve deck（11）Between, terminal pad（9）And valve deck（11）Between connected by bolt
It connects；In pressing sleeve（6-2）Upper and lower end is equipped with grooved metal gasket（10）.
7. the ultralow temperature sylphon seal tiny flow quantity angle valve according to claim 1 with insulation construction, feature exist
In：The valve deck（11）It is provided with installation through-hole, core bar（6）Across valve deck（11）Installation through-hole；The filler assembly（12）Installation
In valve deck（11）Installation through-hole in；Filler assembly（12）Including the Packing seat installed successively from the bottom to top（12-1）, packing fills out
Material（12-2）, spacer（12-3）, lower filler（12-4）, middle filler（12-5）, upper filler（12-6）；In the upper filler（12-6）
Upper end be equipped be sleeved on core bar（6）With valve deck（11）Between pressure ring（11-1）；In the valve deck（11）Upper end is connected by screw thread
It is equipped with bonnet nut（11-3）；The bonnet nut（11-3）Lower end and pressure ring（11-1）Disc spring is equipped between upper end（11-
2）.
8. the ultralow temperature sylphon seal tiny flow quantity angle valve according to claim 7 with insulation construction, feature exist
In：The packing padding（12-2）To impregnate teflon asbestos；The lower filler（12-4）, middle filler（12-5）, on fill out
Material（12-6）For V-type polytetrafluoroethylene (PTFE).
9. the ultralow temperature sylphon seal tiny flow quantity angle valve according to claim 1 with insulation construction, feature exist
In：The valve deck（11）Round nut is installed outside（13）.
10. the ultralow temperature sylphon seal tiny flow quantity angle valve according to claim 1 with insulation construction, feature exist
In：The core bar（6）Upper end is connected with travel indicator（14）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721902060.8U CN207687442U (en) | 2017-12-29 | 2017-12-29 | Ultralow temperature sylphon seal tiny flow quantity angle valve with insulation construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721902060.8U CN207687442U (en) | 2017-12-29 | 2017-12-29 | Ultralow temperature sylphon seal tiny flow quantity angle valve with insulation construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207687442U true CN207687442U (en) | 2018-08-03 |
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ID=62993438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721902060.8U Active CN207687442U (en) | 2017-12-29 | 2017-12-29 | Ultralow temperature sylphon seal tiny flow quantity angle valve with insulation construction |
Country Status (1)
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| CN (1) | CN207687442U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109827005A (en) * | 2019-03-29 | 2019-05-31 | 湖北泰和石化设备有限公司 | A kind of cryogenic valve fugacity composite filling structure and encapsulating method |
| CN111577903A (en) * | 2020-05-27 | 2020-08-25 | 徐州阿卡控制阀门有限公司 | Ultra-low temperature bellows seals small flow angle valve |
| CN114704644A (en) * | 2022-03-31 | 2022-07-05 | 中国科学院合肥物质科学研究院 | Small-flow ultralow-temperature regulating valve for liquid helium temperature zone |
-
2017
- 2017-12-29 CN CN201721902060.8U patent/CN207687442U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109827005A (en) * | 2019-03-29 | 2019-05-31 | 湖北泰和石化设备有限公司 | A kind of cryogenic valve fugacity composite filling structure and encapsulating method |
| CN111577903A (en) * | 2020-05-27 | 2020-08-25 | 徐州阿卡控制阀门有限公司 | Ultra-low temperature bellows seals small flow angle valve |
| CN114704644A (en) * | 2022-03-31 | 2022-07-05 | 中国科学院合肥物质科学研究院 | Small-flow ultralow-temperature regulating valve for liquid helium temperature zone |
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