CN102466066B - Film reducing valve - Google Patents
Film reducing valve Download PDFInfo
- Publication number
- CN102466066B CN102466066B CN 201010543871 CN201010543871A CN102466066B CN 102466066 B CN102466066 B CN 102466066B CN 201010543871 CN201010543871 CN 201010543871 CN 201010543871 A CN201010543871 A CN 201010543871A CN 102466066 B CN102466066 B CN 102466066B
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- Prior art keywords
- valve
- valve body
- spacing
- sealing seat
- valve rod
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- 238000007667 floating Methods 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 claims description 33
- 239000012528 membrane Substances 0.000 claims description 26
- 230000009467 reduction Effects 0.000 claims description 22
- 239000010409 thin film Substances 0.000 claims description 16
- 230000001105 regulatory effect Effects 0.000 claims description 11
- 239000000428 dust Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 abstract description 2
- 230000000087 stabilizing effect Effects 0.000 abstract 1
- 229920001971 elastomer Polymers 0.000 description 9
- 230000001276 controlling effect Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- NTXGQCSETZTARF-UHFFFAOYSA-N buta-1,3-diene;prop-2-enenitrile Chemical compound C=CC=C.C=CC#N NTXGQCSETZTARF-UHFFFAOYSA-N 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010773 plant oil Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Images
Abstract
The invention relates to a film reducing valve which comprises an upper valve body (3), a lower valve body (9), an input pipe (15) and an output pipe (16), wherein the input pipe (15) and the output pipe (16) are arranged on the lower valve body (9) and used for inputting and outputting fluid medium; the film reducing valve is characterized in that the film reducing valve also comprises a floating valve plug assembly, wherein the floating valve plug assembly is arranged in a valve cavity formed by the upper valve body (3) and the lower valve body (9) and used for stabilizing the output pressure of the reducing valve; and a removable valve plug floating technology provided by the invention can markedly improve the voltage-stabilizing performance of the valve; in addition, the film reducing valve provided by the invention has the advantages that a flexible seal base is very firm and reliable, and the film reducing valve is durable in use.
Description
Technical field
The present invention relates to a kind of thin film pressure reducing valve.
Background technique
Thin film pressure reducing valve is the pressure control valve in hydraulic system, and it can drop to the pressure in hydraulic system needs numerical value, is a product that application is very wide.Current hydraulic system improves day by day to the requirement of voltage regulation performance, therefore needs a kind of new thin film pressure reducing valve.
Summary of the invention
The purpose of this invention is to provide a kind of thin film pressure reducing valve, be called again the membrane type reduction valve.
Membrance valve provided by the invention is mainly used in each pulverized coal fired boiler stokehold, thermal power plant oil system of power industry, easily working connection pressure is dropped to each with a required pressure, and system is simplified greatly, can significantly reduce costs.
By thin film pressure reducing valve of the present invention, comprise upper valve body, lower valve body, supplying tube and output tube, described supplying tube and output tube are arranged on lower valve body, be used for the input and output flowing medium, it is characterized in that, described thin film pressure reducing valve also comprises the floating valve plug assembly, and this floating valve plug assembly is arranged in the valve pocket that is made of upper valve body and lower valve body, is used for stablizing the delivery pressure of reduction valve.
Preferably, described floating valve plug assembly comprises spacing valve rod, top board, flexible membrane, lower tray and nut, the sealing seat of vertically arranging along reduction valve, wherein, the center portion of flexible membrane is clipped between top board and lower tray, upper valve body and lower valve body are fixed together, and the peripheral part of flexible membrane is clipped between upper valve body and lower valve body; Lower tray, flexible membrane and top board are passed and the nut of screwing in the upper end of spacing valve rod successively in the top of spacing valve rod, in order to lower tray, flexible membrane and top board are clamped on spacing valve rod together; Spacing valve rod is provided with sealing seat, consists of flowing medium flow control valve door together with the medium inlet opening of sealing seat and supplying tube on lower valve body.
Preferably, described floating valve plug assembly also comprises spring seat, pressure adjusting spring and plug, Returnning spring, wherein, pressure adjusting spring at one end is resisted against on the lower surface of spring seat and is resisted against on top board at the other end, and plug is arranged on the bottom of lower valve body, in the groove of this plug, Returnning spring is installed; The sealing seat that is contained in spacing valve rod lower end is resisted against on Returnning spring, perhaps, spacing valve rod and sealing seat design all-in-one-piece, sealing seat as the lower end abutment of spacing valve rod on Returnning spring.
Preferably, be provided with through hole on the top of upper valve body, be screwed into pressure regulating screw in this through hole, the lower end abutment of pressure regulating screw is on the upper surface of spring seat.
Preferably, described spacing valve rod comprises the upper, middle and lower, wherein, transition position on top to the middle part is provided with crossette, and lower tray is resisted against on this crossette, and, be provided with the hole in the middle part, be preferably square hole, the center line in this hole and reduction valve vertical becomes laterally, preferred vertical, inserts supplying tube in this hole, leaves certain gap between supplying tube and hole.
Preferably, the medium inlet opening of the upper sealing surface of sealing seat flexibility and supplying tube consists of the rate-of flow regulating valve together.The bottom centre in the hole in described spacing valve rod middle part is provided with screw, has been screwed sealing seat in screw.
Preferably, the upper sealing surface of described sealing seat flexibility adopts rubber pad, and this rubber pad is placed in the glue-coated groove in advance on sealing seat top, and then this rubber pad is fixedly connected in described groove by vulcanization process.
Preferably, described thin film pressure reducing valve also comprises dust cover, in case medium leaks outside.
Membrane type reduction valve of the present invention produces beneficial effect as described below:
The invention provides a kind of movable valve plug Floating Technology, due to movable valve plug by the diaphragm positioning supports, consist of float support, and do not have other to force limit point, surface friction drag when therefore movable valve moves beyond the Great Wall is very little, and diaphragm diameter is larger, and on it, hydraulic pressure is very responsive for the outlet pressure variation, significantly improves the voltage regulation performance of valve.
By spacing stem structure of the present invention, can guarantee that it the time can not rotate in dismounting, therefore dismounting easily, and the spacing valve rod amount of moving up and down is restricted, when preventing fault because of the excessive diaphragm that damages of spacing valve rod displacement amount.
In addition, the flexible sealing seat of the present invention's employing is very solid and reliable, durable in use.
Description of drawings
Describe concrete structure and the working principle of valve of the present invention in detail below with reference to drawings and Examples.Wherein,
Fig. 1 illustrates the sectional arrangement drawing by the membrane type reduction valve of one embodiment of the invention;
Fig. 2 illustrates the side view by the membrane type reduction valve of one embodiment of the invention;
Fig. 3 illustrates C-C longitudinal sectional view in Fig. 1.
Embodiment
Fig. 1 illustrates the sectional arrangement drawing by the membrane type reduction valve of one embodiment of the invention, and Fig. 2 illustrates the side view by the membrane type reduction valve of one embodiment of the invention.According to this embodiment, described thin film pressure reducing valve comprises upper valve body 3, floating valve plug assembly (comprising spacing valve rod 6, top board 7, flexible membrane 8, lower tray 13 and nut 14, sealing seat 10 etc.), lower valve body 9, supplying tube 15 and output tube 16.Supplying tube 15 and output tube 16 are arranged on lower valve body 9, are used for input and output flowing medium, oil (flow direction of fluid is as shown in the arrow of Fig. 1) for example.The floating valve plug assembly is arranged in the valve pocket that is made of upper valve body 3 and lower valve body 9, is used for stablizing the delivery pressure of reduction valve.
According to this embodiment, the floating valve plug assembly comprises spacing valve rod 6, top board 7, flexible membrane 8 (for example being made by rubber), lower tray 13 and nut 14, the sealing seat 10 of vertically arranging along reduction valve.Wherein, the center portion of flexible membrane 8 is clipped between top board 7 and lower tray 13, and upper valve body 3 and lower valve body 9 for example are bolted on together and the peripheral part of flexible membrane 8 is clipped between upper valve body 3 and lower valve body 9; The top of spacing valve rod 6 is passed lower tray 13, flexible membrane 8 and top board 7 successively, and the nut 14 of screwing in the upper end of spacing valve rod 6, in order to lower tray 13, flexible membrane 8 and top board 7 are clamped on spacing valve rod 6 together.Spacing valve rod 6 is provided with sealing seat 10, consists of flowing medium flow control valve door together with the medium inlet opening 20 of supplying tube 15 on lower valve body 9.
Modification according to this embodiment, the floating valve plug assembly also comprises spring seat 4, pressure adjusting spring 5 and plug 11, Returnning spring 12, wherein, pressure adjusting spring 5 at one end is resisted against on the lower surface 4 of spring seat and is resisted against on top board 7 at the other end, and plug 11 is arranged on the bottom of lower valve body 9, in the groove 19 of this plug 11, Returnning spring 12 is installed, the sealing seat 10 that is contained in the lower end of spacing valve rod 6 is resisted against on Returnning spring 12.In addition, be provided with on the top of upper valve body along reduction valve through hole 17 longitudinally, be screwed into pressure regulating screw 2 in this through hole 17, the lower end abutment of pressure regulating screw 2 is on the upper surface of spring seat 4.Pressure regulating screw 2 is used for adjusting the pretightening force of pressure adjusting spring 5, thereby adjustment pressure adjusting spring 5 is applied to the pressure on the floating valve plug assembly.
Movable valve plug is at 8 times pressure medium F facing up of elastomer diaphragm
LiquidThe elastic force F that makes progress with Returnning spring 12
MultipleThe elastic force F that sum and pressure adjusting spring 5 are downward
BulletBetween the effect of poor power under upper and lower motion, thereby change the aperture of regulating valve.The moment pressure medium that is caused by controlling opening of valve falls Δ P and just makes this valve have the function of voltage-regulation voltage-stabilization.
In movable valve plug Floating Technology of the present invention, due to the floating valve plug assembly by the diaphragm positioning supports, consist of float support, and do not have other to force limit point, surface friction drag when therefore floating valve moves beyond the Great Wall is very little, moreover diaphragm diameter is larger, and on it, hydraulic pressure is very responsive for the outlet pressure variation, can significantly improve the voltage regulation performance of valve.
Fig. 3 illustrates the longitudinal sectional view by the spacing valve rod 6 of the membrane type reduction valve of one embodiment of the invention.
According to this embodiment, spacing valve rod 6 comprises top 61, middle part 62 and bottom 63, and wherein, 61 62 transition position is provided with crossette 64 to the middle part on top, and lower tray 13 is resisted against on this crossette.In addition, be provided with hole (being preferably square hole) 65 in middle part 62.Under the assembling condition of membrane type reduction valve, the center line X-X in this hole 65 becomes laterally with vertical Y-Y of reduction valve, preferred vertical.Insert supplying tube 15 at this Kong Zhongneng, leave certain gap between supplying tube 15 and hole 65, the plug-in mounting structure in the hole by supplying tube like this, just can guarantee that spacing valve rod 6 rotates at dismounting (namely dismantling nut 14) Shi Buhui, therefore dismounting easily, and the amount of moving up and down of spacing valve rod 6 is restricted, thus when preventing fault because of the excessive diaphragm that damages of spacing valve rod 6 displacement amounts.
Fig. 3 also illustrates the thin section structure of the flexible sealing seat 10 of membrane type reduction valve.According to this embodiment, be provided with screw 18 in the bottom centre of spacing valve rod 6 mider holes, sealing seat 10 is screwedly mounted in this screw.The upper sealing surface of the flexibility of sealing seat 10 and the medium inlet opening 20 that is contained in supplying tube 15 on lower valve body 9 consist of the rate-of flow regulating valves.
According to this embodiment's modification, the upper sealing surface of the flexibility of sealing seat 10 for example adopts that thickness is
Rubber pad (for example oil resistant butadiene-acrylonitrile rubber), rubber pad is placed in the glue-coated corresponding recesses in advance (being preferably dovetail groove) on sealing seat 10 tops, then it is vulcanized, so that rubber pad is fixedly connected in this groove.The sealing seat that obtains like this is very solid and reliable, and is durable in use.
According to this embodiment's modification, spacing valve rod 6 can design all-in-one-piece with sealing seat 10, sealing seat 10 as the lower end abutment of spacing valve rod 6 on Returnning spring.
In the present invention, thin film pressure reducing valve can also comprise dust cover 1, leaks outside (as shown in Figure 1, 2) to prevent medium.
As described below by reduction valve working principle of the present invention:
It follows following mechanics identity, i.e. P when work
Advance=Δ P+P
Go out, inlet pressure P before valve
AdvanceSteady state value, and P
Go outIt is artificial setting as required.Generally, in a single day this value regulates, substantially remain unchanged.But after valve, the medium actual flow is in frequent variation, and this moment, just the full Δ P regulating action of leaning on guaranteed P
Go outBasicly stable constant, even a bit change, also should be in permissible range.Such as the valve export flow increases suddenly, due to the effect of inertia of movable valve plug, controlling opening of valve not yet has enough time to change, and therefore, valve export pressure can reduce in the instant, F
Bullet＞F
Liquid+ F
Multiple, movable valve plug moves downward, and controlling opening of valve increases, and flow increases, and outlet pressure recovers again initial value.If rate of discharge reduces, the not yet motion under effect of inertia of same movable valve plug still keeps original position, and this moment, outlet pressure can increase moment, F
Liquid+ F
Multiple＞F
Bullet, the difference of its strength forces movable valve to move beyond the Great Wall, and the local pressure loss Δ p instant that controlling opening of valve reduces to cause due to gate throttle increases, and again outlet pressure is adjusted to original setting.
Described reduction valve inlet pressure is 3.0MPa, and outlet pressure 0～1.4MPa is stepless adjustable, and outlet pressure is 1.0MPa, and rate of discharge increases to 1400kg/h by 0, the maximum range of decrease＜0.1MPa of outlet pressure, outlet pressure speed of response＜0.2 second.
Claims (4)
1. thin film pressure reducing valve, comprise upper valve body (3), lower valve body (9), supplying tube (15) and output tube (16), described supplying tube (15) and output tube (16) are arranged on lower valve body (9), be used for the input and output flowing medium, it is characterized in that, described thin film pressure reducing valve also comprises the floating valve plug assembly, this floating valve plug assembly is arranged in the valve pocket that is made of upper valve body (3) and lower valve body (9), be used for stablizing the delivery pressure of reduction valve, wherein, described floating valve plug assembly comprises the spacing valve rod (6) of vertically arranging along reduction valve, top board (7), flexible membrane (8), lower tray (13) and nut (14), sealing seat (10), wherein, the center portion of flexible membrane (8) is clipped between top board (7) and lower tray (13), upper valve body (3) and lower valve body (9) are fixed together, the peripheral part of flexible membrane (8) is clipped between upper valve body (3) and lower valve body (9), lower tray (13), flexible membrane (8) and top board (7) are passed and the nut (14) of screwing in the upper end of spacing valve rod (6) successively in the top (61) of spacing valve rod (6), in order to lower tray (13), flexible membrane (8) and top board (7) are clamped on spacing valve rod (6) together, spacing valve rod (6) is provided with sealing seat (10), consist of flowing medium flow control valve door together with the medium inlet opening (20) of sealing seat (10) and supplying tube (15) on lower valve body (9), described spacing valve rod (6) comprises top (61), middle part (62) and bottom (63), wherein, be provided with hole (65) in described middle part (62), under the assembling condition of membrane type reduction valve, the center line (X-X) in described hole (65) becomes horizontal with vertical (Y-Y) of reduction valve, insert described supplying tube (15) in this hole, leave certain gap between supplying tube (15) and hole (65).
2. thin film pressure reducing valve as claimed in claim 1, it is characterized in that, described floating valve plug assembly also comprises spring seat (4), pressure adjusting spring (5) and plug (11), Returnning spring (12), wherein, pressure adjusting spring (5) at one end is resisted against on the lower surface of spring seat (4) and is resisted against on top board (7) at the other end, and plug (11) is arranged on the bottom of lower valve body (9), in the groove (19) of this plug (11), Returnning spring (12) is installed; The sealing seat (10) that is contained in spacing valve rod (6) lower end is resisted against on Returnning spring (12), perhaps, spacing valve rod (6) and sealing seat (10) design all-in-one-piece, sealing seat (10) as the lower end abutment of spacing valve rod (6) on Returnning spring.
3. thin film pressure reducing valve as claimed in claim 2, it is characterized in that, be provided with through hole (17) on the top of upper valve body (3), be screwed into pressure regulating screw (2) in this through hole, the lower end abutment of pressure regulating screw (2) is on the upper surface of spring seat (4).
4. thin film pressure reducing valve as described in any one in claims 1 to 3, is characterized in that, described thin film pressure reducing valve also comprises dust cover (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010543871 CN102466066B (en) | 2010-11-15 | 2010-11-15 | Film reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010543871 CN102466066B (en) | 2010-11-15 | 2010-11-15 | Film reducing valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102466066A CN102466066A (en) | 2012-05-23 |
| CN102466066B true CN102466066B (en) | 2013-06-19 |
Family
ID=46070032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010543871 Active CN102466066B (en) | 2010-11-15 | 2010-11-15 | Film reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102466066B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105650314B (en) * | 2016-04-18 | 2018-03-16 | 黄幼华 | A kind of self-operated type voltage stabilizing balanced valve |
| CN105673903B (en) * | 2016-04-18 | 2018-04-13 | 黄幼华 | A kind of self-balancing valve |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2076631U (en) * | 1990-11-14 | 1991-05-08 | 宁波埃美柯金属制品有限公司 | Pressure reducing valve |
| CN2665484Y (en) * | 2003-11-19 | 2004-12-22 | 马俊燕 | Branch pipe pressure-reducing valve |
| CN201884731U (en) * | 2010-11-15 | 2011-06-29 | 烟台龙源电力技术股份有限公司 | Film pressure reducing valve |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55132479A (en) * | 1979-03-30 | 1980-10-15 | Tokico Ltd | Pressure control device |
| JP2002032130A (en) * | 2000-07-17 | 2002-01-31 | Yoshitake Inc | Pressure reducing valve |
-
2010
- 2010-11-15 CN CN 201010543871 patent/CN102466066B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2076631U (en) * | 1990-11-14 | 1991-05-08 | 宁波埃美柯金属制品有限公司 | Pressure reducing valve |
| CN2665484Y (en) * | 2003-11-19 | 2004-12-22 | 马俊燕 | Branch pipe pressure-reducing valve |
| CN201884731U (en) * | 2010-11-15 | 2011-06-29 | 烟台龙源电力技术股份有限公司 | Film pressure reducing valve |
Non-Patent Citations (2)
| Title |
|---|
| JP昭55-132479A 1980.10.15 |
| JP特开2002-32130A 2002.01.31 |
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| Publication number | Publication date |
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| CN102466066A (en) | 2012-05-23 |
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