CN87208665U - Drain valve with shape memory alloy - Google Patents
Drain valve with shape memory alloy Download PDFInfo
- Publication number
- CN87208665U CN87208665U CN 87208665 CN87208665U CN87208665U CN 87208665 U CN87208665 U CN 87208665U CN 87208665 CN87208665 CN 87208665 CN 87208665 U CN87208665 U CN 87208665U CN 87208665 U CN87208665 U CN 87208665U
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- China
- Prior art keywords
- shape memory
- memory alloy
- spring
- valve
- drain valve
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Abstract
The utility model discloses a drain valve with shape memory alloy in the field of heat supplying, mainly comprising a valve body, a valve seat, a valve hole, a back valve seat, a sleeve cylinder, a shape memory alloy spring and an assistant spring. The shape memory alloy spring and the assistant spring are served as the thermo-sensitive element and the drain valve can be used in the temperature range of 30 to 200 DEG. The utility model has the advantages of simple structure, high stability and high sensitivity. Compared with the prior drain valve of liquid expanding type, the cost can be reduced by third.
Description
The utility model belongs to the heat supply field.
Drain valve is hydrophobic energy-conservation Primary Component.In prior art,, be mostly with steam (or water) as heat transfer medium from producing heating.For making the equipment proper functioning and saving the energy, all use warm mode drain valve.Most typical in the present temperature mode drain valve is expansion of liquids formula drain valve, it is mainly by valve body (5), valve opening (6), spool (8), valve seat (1), rear valve base (12), sleeve (9) and be equipped with as the bellows system of thermosensitive element in sleeve (9) and formed, and this drain valve expands with heat and contract with cold open and close by bellows.There is following shortcoming in this drain valve:
1, it is not high to do thermosensitive element sensitivity with bellows system, and the general temperature difference is more than ± 10 ℃.
2, bellows subject to damage and losing efficacy in use, thereby the life-span is low.
3, because the bellows material is more expensive, and the processing technology complexity, thereby cost is higher.
In order to improve the sensitivity of warm mode drain valve, increase the service life simplified structure and reduce cost ad hoc meter the utility model.
Main design of the present utility model is the bellows system that replaces expansion of liquids formula drain valve with shape memory alloy spring.
This shape memory alloy drain valve mainly is made of valve body (5), valve opening (6), spool (8), valve seat (1), rear valve base (12), sleeve (9), it is characterized in that being equipped with in the sleeve (9) shape memory alloy spring (10) and secondary spring (7) as thermosensitive element.This shape memory alloy spring (10) stretches owing to varying with temperature, thereby reaches the purpose of adjusting hydrophobic amount.The line of shape memory alloy spring (10) directly can be 1～4mm, and external diameter can be 10～30mm, prescribes a time limit at the following of control temperature, and the length of its shape memory alloy spring (10) can be 5～40mm.On the control temperature,, can be 10～60mm in limited time.Adopt the marmem of different components, can use in a wider temperature range, this temperature range is generally 30 ℃～200 ℃.Within this temperature range, select heterogeneity for use with different pressure, the shape memory alloy spring of different parameters according to different serviceability temperatures is interval.Control the temperature difference to be generally less than ± 5 ℃.Assist the secondary spring (7) of shape memory alloy spring (10) work, its line directly can be 0.8～3mm, and external diameter can be 10～30mm, and its free length can be 5～50mm, specifically is advisable can coordinate shape memory alloy spring (10) work.
Shape memory alloy drain valve is when work, steam (or water) enters from the ingress, directly contact with shape memory alloy spring (10), when ingress steam (or water) temperature is higher than the upper limiting temperature of requirement, shape memory alloy spring (10) elongation, promote spool (8) and shift to valve opening (6), the area of ingress is reduced, at last valve cuts out.When ingress steam (or water) drops to the lower limit temperature of requirement, shape memory alloy spring (10) shrinks, under the help of secondary spring (7), spool (8) moves to the direction away from valve opening (6), inlet area is increased, valve is opened, and the Low Temperature Steam that enters (or water) discharges by the outlet of the hole on the sleeve (9) from valve body (5), is discharged to low-temperature circuit and heating once more by outlet.Guarantee that with this temperature is within the scope that requires in loop.
Fig. 1 is the structural drawing of shape memory alloy drain valve.
Fig. 2 is the structural drawing of the utility model embodiment 3 shape memory alloy drain valve.
As follows to the utility model description of drawings:
Be designed with the entrance of drain valve on the valve seat (1), be installed in the filter screen (2) of entrance to prevent that foreign material enter in the valve in the water, filter screen (2) is fixed on the valve seat (1) with snap ring (3), secondary spring (7) is installed on the same axis with shape memory alloy spring (10), jointly control advancing and retreating of spool (8), sleeve (9) is to limit spool (8) and temperature-sensitive bullet The radial motion of spring abutment (11), shape memory alloy spring (10) is by temperature sensing spring seat (11) supporting, and the screw rod (14) that is installed on the rear valve base (12) is adjusted temperature sensing spring seat (11) by adjusting nut (15), in addition, also have valve opening (6), valve body (5) sealing ring (4) and packing ring (13).
The difference of Fig. 2 and its Fig. 1, just secondary spring (7) is exchanged with the position of shape memory alloy spring (10).
Compare with original liquid expansion type drain valve, this shape memory alloy drain valve has following advantage:
1, the thermosensitive element made from marmem is highly sensitive, and general error exists
In ± 5 ℃.
2, good at control temperature range internal stability.
3,, thereby can reduce cost about 1/3rd because simple in structure and the cost of material is low.
Be specific embodiment of the utility model below:
Embodiment 1:
For vapor pressure is 15 heating equipments that barometric pressure is industrial, the operating temperature that requires is 200 ℃ a shape memory alloy drain valve, adopting line directly is 2.5mm, external diameter is the shape memory alloy spring (10) of 25mm, and when temperature was lower than 195 ℃, its free length of shape memory alloy spring (10) was decided to be 25mm, as original length, secondary spring (7) line directly is 1.8mm, and external diameter is 20mm, and its free length is decided to be 35mm.During installation, shape memory alloy spring (10) keeps 25mm long, and secondary spring (7) is compressed to 32mm, gives shape memory alloy spring (10) with certain tight power of giving.When vapor (steam) temperature in the loop surpasses 205 ℃, shape memory alloy spring (10) overcomes the pressure of auxilliary spring (7) and is elongated to 40mm, secondary spring (7) further is compressed to 17mm, this moment the valve Close All, when temperature in the loop is reduced to 195 ℃, shape memory alloy spring (10) shrinks, under the help of secondary spring (7), get back to original low temperature length 25mm rapidly, this moment, valve was all opened, Low Temperature Steam is entered in the valve body (5), be discharged in the low-temperature circuit via hole on the sleeve (9) and outlet again and go.
Embodiment 2:
For general steam heating boiler commonly used, when temperature is lower than 100 ℃, occur coagulating the water phenomenon, it need be discharged.Can adopt this moment line directly to be 2mm, external diameter is the shape memory alloy spring (10) of 20mm, and when this spring was lower than 95 ℃ in temperature, length was decided to be 20mm as original length, and when being higher than 105 ℃, its length can reach 35mm.Secondary spring (7) line directly is 1.2mm, and external diameter is 20mm, and free length is 30mm.During installation, shape memory alloy spring (10) keeps 20mm long, secondary spring (7) is compressed to 27mm length, give shape memory alloy spring (10) with certain tight power of giving, when steam in the loop (or water) surpasses 105 ℃, shape memory alloy spring (10) overcomes the pressure of secondary spring (7) and is elongated to 35mm, secondary spring (7) further is compressed to 12mm, this moment the valve Close All, when loop temperature is reduced to 95 ℃, shape memory alloy spring (10) shrinks, under the help of secondary spring (7), get back to original low temperature length 20mm rapidly, this moment, valve was all opened, Low Temperature Steam is entered in the valve body (5), be discharged to via the hole of sleeve (9) and outlet again and go to continue heating in the water return lines.
Embodiment 3:
To utilizing the situation of solar energy heating shower water, valve can be opened when requiring water temperature to reach 50 ℃, hot water is discharged in the wet pit in order to using, and temperature is when being lower than 40 ℃, then should be valve closing.The operating temperature range of the shape memory alloy spring (10) of drain valve employing at this moment is 40～50 ℃ a alloy.The line of shape memory alloy spring (10) directly is 2mm, external diameter is 20mm, length is 20mm when being lower than 40 ℃, secondary spring (7) line directly is 1.2mm, external diameter is 20mm, free length is 35mm, during installation, and the state when shape memory alloy spring (10) keeps low temperature, secondary spring (7) is compressed to 32mm, when water temperature surpassed 50 ℃, shape memory alloy spring (10) overcame the pressure of secondary spring (7) and is elongated to 35mm, and this moment, valve was all opened, hot water is entered in the wet pit, when water temperature was lower than 40 ℃, shape memory alloy spring (10) shrank, under the help of secondary spring (7), get back to the home position rapidly, its length keeps 20mm, and this moment, the valve Close All prevented that cold water from entering in the wet pit.Valve varies with temperature and open and close so repeatedly, keeps water temperature within the scope that requires.
In addition, when working pressure is big, can use a plurality of shape memory alloy springs (10) suit, secondary spring (7) but also suit use, also can be sleeved on use to shape memory alloy spring (10) with secondary spring (7).Shape memory alloy spring (10) can be made various forms as required, as tabular, strip.The line footpath also can be ellipse and polygonal, to satisfy the needs of different purposes.
Claims (4)
1, the shape memory alloy drain valve used of a kind of heat supply, it is mainly by valve body [5], valve opening [6], valve seat [1], rear valve base [12] and sleeve [9] constitute, it is characterized in that being equipped with in the sleeve [9] shape memory alloy spring [10] and secondary spring [7] as thermosensitive element, adopt the marmem of heterogeneity, can in a wider temperature range, use.
2, shape memory alloy drain valve according to claim 1, it is characterized in that its line of shape memory alloy spring (10) directly is 1～4mm, external diameter is 10～30mm, and its length is 5～40mm when the control lowest temperature, when the control temperature upper limit, length is 10～60mm.
3, shape memory alloy drain valve according to claim 1, the line that it is characterized in that secondary spring (7) directly is 0.8～3mm, and external diameter is 10～30mm, and free length is 5～50mm.
4, shape memory alloy drain valve according to claim 1 is characterized in that the serviceability temperature scope is 30 ℃～200 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87208665 CN87208665U (en) | 1987-05-29 | 1987-05-29 | Drain valve with shape memory alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87208665 CN87208665U (en) | 1987-05-29 | 1987-05-29 | Drain valve with shape memory alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87208665U true CN87208665U (en) | 1988-05-25 |
Family
ID=4823895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87208665 Withdrawn CN87208665U (en) | 1987-05-29 | 1987-05-29 | Drain valve with shape memory alloy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87208665U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101784974B (en) * | 2007-08-21 | 2013-01-02 | 奥托.埃杰尔霍夫两合公司 | Valve element and thermostatic control device for controlling a mass flow |
| CN104696582A (en) * | 2015-03-20 | 2015-06-10 | 广东美的暖通设备有限公司 | Water switch and air-conditioner with water switch |
| CN104964041A (en) * | 2015-07-08 | 2015-10-07 | 莆田学院 | Temperature control automatic valve |
| CN110159910A (en) * | 2019-05-17 | 2019-08-23 | 浙江大学 | A kind of steam trap that marmem drives and hydrophobic control method |
| CN111365498A (en) * | 2020-03-25 | 2020-07-03 | 焦彪彪 | Chemical industry reation kettle constant pressure valve |
-
1987
- 1987-05-29 CN CN 87208665 patent/CN87208665U/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101784974B (en) * | 2007-08-21 | 2013-01-02 | 奥托.埃杰尔霍夫两合公司 | Valve element and thermostatic control device for controlling a mass flow |
| CN104696582A (en) * | 2015-03-20 | 2015-06-10 | 广东美的暖通设备有限公司 | Water switch and air-conditioner with water switch |
| CN104964041A (en) * | 2015-07-08 | 2015-10-07 | 莆田学院 | Temperature control automatic valve |
| CN110159910A (en) * | 2019-05-17 | 2019-08-23 | 浙江大学 | A kind of steam trap that marmem drives and hydrophobic control method |
| CN111365498A (en) * | 2020-03-25 | 2020-07-03 | 焦彪彪 | Chemical industry reation kettle constant pressure valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |