CN204784881U - A check valve that is used for condensate water dredged of steam conduit - Google Patents
A check valve that is used for condensate water dredged of steam conduit Download PDFInfo
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- CN204784881U CN204784881U CN201520146976.XU CN201520146976U CN204784881U CN 204784881 U CN204784881 U CN 204784881U CN 201520146976 U CN201520146976 U CN 201520146976U CN 204784881 U CN204784881 U CN 204784881U
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Abstract
The utility model belongs to the technical field of the pipeline check valve, concretely relates to a check valve that is used for condensate water dredged of steam conduit can automatic stop the steam counterflow, when intake side pressure is less than the outlet side, the valve clack under factor effects such as medium pressure differential, gravity own self -closing in order to prevent the steam refluence, production unnecessary heat loss, including valve body (1), case (2), hydrophobic (3) and disk seat (4), valve body (1) and disk seat (4) is hollow circular cylinder venturi tube form, and wherein disk seat (4) upper end is located in valve body (1), and valve body (1) and disk seat (4) junction upper end is located in hydrophobic (3), and it is inside that valve body (1) and disk seat (4) is located in case (2).
Description
Technical field
The utility model belongs to pipe line check valve technical field, is specifically related to a kind of safety check of the dredged water of condensation for steam line.
Background technique
It is high that general steam line has temperature, and pressure is low, and flow velocity is fast, and vibration is large, easily produces the features such as water of condensation.Safety check that steam line is installed needs to open and close rapidly, good airproof performance, lightweight construction, the features such as flexible movements, can also according to self needing before system comes into operation water of condensation after drain.
On steam line, after being arranged on stand-by boiler or heat exchanger, when system is stopped using for preventing other steam user and standby equipment from producing heat exchange and needing safety check check medium, but not circulating of steam medium will certainly produce water of condensation, it is cause pipeline to have a strong impact on (water hammer) that the generation of water of condensation will come into operation at next steam again, therefore needs a kind ofly can reliably to get rid of again the check equipment of water of condensation by non-return.
Model utility content
Technical problem to be solved in the utility model is, not enough for prior art, there is provided one automatically can stop steam reverse flow, when suction side pressure is lower than outlet side, flap is automatically closed to prevent steam from flowing backwards under the effect of the factor such as medium differential pressure, gravity own, produces the safety check of a kind of dredged water of condensation for steam line of unnecessary heat loss.
The technological scheme that the utility model adopts is:
A kind of safety check of the dredged water of condensation for steam line, comprise valve body, spool, hydrophobic and valve seat, described valve body and valve seat are hollow cylindrical tubulose, and wherein valve body is located at valve seat upper end, hydrophobicly be located at valve body and upper end, valve seat joint, spool is located at valve body and valve seat is inner.
Described valve body and valve base cavity joint are provided with sealing surface.
Described spool is located on sealing surface.
High temperature resistant acrylate rubber coated is adopted outside described spool.
The beneficial effects of the utility model are:
1. can adopt micro-resistance Swing check valve structural design by hydrophobic steam safety check, adopt flange design, lightweight, sealing is reliable;
2. this check valve design flow is large, the little good seal performance of flow resistance loss, and noise elimination closedown can reduce surge wave, and rotary-open type structural design is level or installation certainly of hanging down then, prevents medium from flowing backwards and discharges water of condensation by drain water piping;
3. adopt high temperature resistant acrylate rubber coated spool to be the elasticity utilizing rubber, this design can anti-non-return seat time spool smash, and improve valve seal and ensure valve seal and non-leaked steam;
4. simple, lightweight, the weight of structure only has about 1/3rd of valve gap Swing check valve; Slow Close systematic function is excellent, and not by the impact of pipeline medium, flap first speed closes rear Slow Close, can prevent destruction. water hammer; High-temperature resistant rubber soft seal, closed performance is good, wear-resistant, long service life; Rubber coated spool has buffer function, opens and closes steadily, friction, noise free, impacts little to pipeline; Than rise-fall type and common Swing check valve flow resistance little, have obvious energy-saving effect; Flange joint designs, and easy accessibility, is easy to repair and replacement.
Accompanying drawing explanation
Fig. 1 is a kind of safety check schematic diagram of the dredged water of condensation for steam line;
Fig. 2 is a kind of safety check plan view of the dredged water of condensation for steam line;
Fig. 3 is a kind of safety check valve open view of the dredged water of condensation for steam line;
Fig. 4 is a kind of safety check valve-closed state schematic diagram of the dredged water of condensation for steam line.
In figure: 1. valve body; 2. spool; 3. hydrophobic; 4. valve seat; 5. sealing surface.
Embodiment
Be introduced below in conjunction with the safety check of drawings and Examples to a kind of dredged water of condensation for steam line that the utility model provides:
A kind of safety check of the dredged water of condensation for steam line, comprise valve body 1, spool 2, hydrophobic 3 and valve seat 4, described valve body 1 and valve seat 4 are hollow cylindrical tubulose, wherein valve body 1 is located at valve seat 4 upper end, hydrophobic 3 are located at valve body 1 and upper end, valve seat 4 joint, and spool 2 is located at valve body 1 and valve seat 4 is inner.
Described valve body 1 and valve seat 4 inner chamber joint are provided with sealing surface 5.
Described spool 2 is located on sealing surface 5.
High temperature resistant acrylate rubber coated is adopted outside described spool 2.
Can adopt micro-resistance Swing check valve structural design by hydrophobic steam safety check, adopt flange design, lightweight, sealing is reliable.Adopt high temperature resistant acrylate rubber coated spool, under the effect of steam, spool opens or closes by the cooperation of the rotary shaft hole of the axle on spool and valve body.This check valve design flow is large, the little good seal performance of flow resistance loss, and noise elimination closedown can reduce surge wave, and rotary-open type structural design is level or installation certainly of hanging down then, prevents medium from flowing backwards and discharges water of condensation by drain water piping.
Adopt high temperature resistant acrylate rubber coated spool to be the elasticity utilizing rubber, this design can anti-non-return seat time spool smash, and improve valve seal and ensure valve seal and non-leaked steam.Revolve enlightenment design and ensure that valve opens and closes fast.And because the general pressure ratio of steam line is lower, this rubber coated spool lightweight, is used on steam line more reliable than rise-fall type, the bite that there will not be lift valve often to occur and the fault of refusing out.
This safety check specific design feature is the critical piece forging process such as upper valve body and lower valve body spool.Its upper and lower valve body standard stainless-steel sheet volume weldering, flange and floor are imported and exported in volume postwelding full weld fillet welding welding.
Connected by bolt between valve body, coordinate on flanged surface by mach method turning sealing surface of seat with upper valve body at lower valve body, owing to adopting " metal-non-metal " sealing pair, therefore sealing surface of seat does not need the cemented carbide of independent built-up welding other materials, but adopt grinding process to make the roughness of sealing surface of seat reach more than Ra0.8, seal f ace width can be selected according to pressure rank, but is generally no more than 8mm, and sealing surface height is 3 ~ 5mm.
Between upper and lower valve body in conjunction with flanged surface also needing the axis hole being milled out valve core shaft by machine-tooled method, according to the performance characteristic of valve, the fit tolerance grade in chosen axis and hole is G6/m6.
Spool is placed on the sealing surface of seat of lower valve body, and the rotating shaft of spool matches with axis hole, installs valve body afterwards, is bolted upper and lower valve flange and valve core shaft is positioned in the axis hole of upper and lower valve body.
After being arranged on stand-by boiler or heat exchanger, when stand-by boiler is stopped using, under the effect of back pressure, this valve is closed rapidly by back pressure effect, spool is non-metal-rubber, at the effect lower valve core rubber adhesive extruding sealing surface of seat of back pressure, resistant to elevated temperatures rubber material distortion produces seal pressure on sealing pair, steam after stop valve, makes valve seal.
Because after valve, steam does not flow, steam heat scatters and disappears and can form water of condensation in duct bottom, and the hot power Automatic steam trap Trap of the weep hole at this moment after valve and connection can get rid of water of condensation in time, ensures that stand-by boiler or exchanger can be used.
When system comes into operation, owing to not having water of condensation after valve, valve is opened fast under pressure medium, can not produce water hammer completely.
Claims (4)
1. the safety check for the dredged water of condensation of steam line, it is characterized in that: comprise valve body (1), spool (2), hydrophobic (3) and valve seat (4), described valve body (1) and valve seat (4) are hollow cylindrical tubulose, wherein valve body (1) is located at valve seat (4) upper end, hydrophobic (3) are located at valve body (1) and valve seat (4) upper end, joint, and spool (2) is located at valve body (1) and valve seat (4) is inner.
2. the safety check of a kind of dredged water of condensation for steam line according to claim 1, is characterized in that: described valve body (1) and valve seat (4) inner chamber joint are provided with sealing surface (5).
3. the safety check of a kind of dredged water of condensation for steam line according to claim 1, is characterized in that: described spool (2) is located on sealing surface (5).
4. the safety check of a kind of dredged water of condensation for steam line according to claim 1, is characterized in that: described spool (2) outside adopts high temperature resistant acrylate rubber coated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520146976.XU CN204784881U (en) | 2015-03-13 | 2015-03-13 | A check valve that is used for condensate water dredged of steam conduit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520146976.XU CN204784881U (en) | 2015-03-13 | 2015-03-13 | A check valve that is used for condensate water dredged of steam conduit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204784881U true CN204784881U (en) | 2015-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520146976.XU Active CN204784881U (en) | 2015-03-13 | 2015-03-13 | A check valve that is used for condensate water dredged of steam conduit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204784881U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106032850A (en) * | 2015-03-13 | 2016-10-19 | 江苏核电有限公司 | Condensation water drainable check valve used for steam pipeline |
-
2015
- 2015-03-13 CN CN201520146976.XU patent/CN204784881U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106032850A (en) * | 2015-03-13 | 2016-10-19 | 江苏核电有限公司 | Condensation water drainable check valve used for steam pipeline |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |