CN2511842Y - Self-fource pressure difference control valve - Google Patents
Self-fource pressure difference control valve Download PDFInfo
- Publication number
- CN2511842Y CN2511842Y CN 01267873 CN01267873U CN2511842Y CN 2511842 Y CN2511842 Y CN 2511842Y CN 01267873 CN01267873 CN 01267873 CN 01267873 U CN01267873 U CN 01267873U CN 2511842 Y CN2511842 Y CN 2511842Y
- Authority
- CN
- China
- Prior art keywords
- valve
- pressure
- valve body
- pressure difference
- core rod
- 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 - Lifetime
Links
Images
Landscapes
- Control Of Fluid Pressure (AREA)
Abstract
The utility model provides a self-force pressure difference control valve which consists of a valve body (2), a valve core rod (3), a valve petal (4), a pressure sensing film (7), a spring (1) and a pressure difference adjusting apparatus (5). The valve core rod (3) is arranged inside the valve body (2) and vertical with the flow direction of medium. The valve core rod (3) is connected with the valve petal (4), the spring (1) and the pressure sensing film (7). The inner cavity of the valve body (2) is divided into three pressure branch cavities by the valve petal (4) and the pressure sensing film (7). The pressure difference adjusting apparatus is arranged on the side of the valve body (2) and connected with the branch cavities on two sides of the film. A pressure guide pipe (6) is arranged on the top of the valve body and communicated with the top cavity of the film. The utility model is of novel structure, economical value, practical value, high precision for controlling the pressure difference, large adjusting range, thereby being applicable to liquid transporting nets, in particular to heat supply systems which adopt quality adjusting and calculation in each house. The utility model can be mounted in water supply pipeline, water return pipeline or bypassing pipeline for controlling pressure difference as the novel pressure difference control valve.
Description
(1) technical field
The utility model belongs to a kind of valve of mechanical engineering technical field, especially a kind of pressure reduction adjusting control valve that is used for liquid conducting pipes.
(2) background technique
In liquid transmission pipeline such as the hydraulic engineering of urban heating heat supply network, be the operation of guaranteeing that network security is stable, need differential pressure control valve be installed at water return pipeline, supply channel, bypass line usually.In known technology, existing differential pressure control valve mainly is that employing kind of component surplus valve body, valve gap, valve seat, valve rod, flap, diaphragm, pressing plate, spring, seal ring, pad etc. 20 are formed main valve (also being dynamic balance valve), also must external more manual equilibrium valve combined matching with it, its complex structure, cost height, complex operation, control pressure reduction regulation range are little, and has only backwater mounting type single product, application area is narrow, and use is restricted.
(3) summary of the invention
The utility model bases oneself upon and solves the above-mentioned technical problem that existing differential pressure control valve exists, its objective is provide a kind of novel structure, simple structure, cost low, manipulate easy, control pressure reduction regulation range is big, the novel pressure reduction adjusting control valve of applied range.
For achieving the above object, the technical solution that the utility model is taked is: adopt by valve body, valve core rod, flap, pressure-sensitive diaphragm, the Differential Pressure Controller that the differential pressure adjusting device of spring and proportion of utilization formula mixed pressure principle design is formed, in body cavity installing and MEDIA FLOW to vertical longitudinal valve core bar, the load flap seat hole in the valve body that is connected on the valve rod body of rod, the bar bottom connects spring, the masthead end connects pressure-sensitive diaphragm, by diaphragm and flap body cavity is divided into the left side, the right side, three pressure in top divide the chamber, and on valve body, be equiped with the differential pressure adjusting device that connects right side, diaphragm both sides and top pressure branch chamber, also install the PRESSURE PIPE that connecting valve interior diaphragm upper top pressure divides the chamber at the valve body top.The function of this Differential Pressure Controller is that locking puts on the control pressure reduction of controlled system, and can absorb the pressure-difference fluctuation of outer net effectively, and the adjusting that absorbs effectively between each user, each branch road is disturbed.It is applicable to the liquid delivery tube net, especially adopts matter to regulate the pipe network of the heating system of household metering, is installed in supply channel, water return pipeline, is used for pressure reduction control for the bypass line between the return pipe by designing requirement.The water-feeding type differential pressure control valve of water pipe has the effect of safety valve to controlled system, can make confession, controlled system that backwater pressure reduction is bigger bear pressure and be lower than setup pressure value; The bypass type differential pressure control valve that is loaded on bypass tube can flow directly into return pipe with the surplus rich pressure head of water pipe, and the pressure reduction of restriction controlled system is no more than setting value.With the water feedback type differential pressure control valve is example, during use, water outlet connection consumer heat inlet device outlet port return pipe, the water intake of valve are connected the return pipe after the controlled system, the water pipe at PRESSURE PIPE connection outer net consumer heat inlet device place, when pressure of supply water increases or reduces, pressure signal imports the pressure-sensitive epistege into by PRESSURE PIPE, make diaphragm drive that valve rod moves down together with flap or on move, the circulation area of seat mouthful reduces or increases in the valve, regulating pressure reduction, to restore the maintenance initial value constant; When the moment that return pipe pressure increases or reduces, flow velocity by in the valve mouthful of water outlet of flowing through reduces or increases, diaphragm is lowered to the oral-lateral cavity pressure also to be increased or reduces in individual moment, and until pressure-sensitive diaphragm both sides cavity pressure balance again, controlled pressure reduction is replied and kept initial value constant; When the controlled system resistance reduces or increases, drive on the flap and move or move down, the circulation area of seat mouthful increases or reduces in the valve, causes after the controlled system that the pipe internal pressure reduces or increases, the operating pressure differential of pressure difference valve also reduces thereupon or increases, and restores until control pressure reduction to keep initial value constant.
Because the Differential Pressure Controller new structure has been adopted in the utility model design, especially on the diaphragm of this pressure difference valve, the pressure difference signal at downforce and controlled system two ends is synchronous, so do not need to connect the control function that manual equilibrium valve can be finished control pressure reduction again.Show through experiment and detection for several times, this differential pressure control valve control pressure reduction precision≤± 7.5%, control pressure reduction regulation range is 0.01～0.2MPa.Therefore, the utility model compared with prior art has that novel structure, simple structure, cost are low, economical and practical, control pressure reduction precision height, regulation range are big, applied range, manipulate beneficial effects such as easy, are a kind of novel differential pressure control valve.
(4) description of drawings
Fig. 1 is the utility model embodiment's a structural representation.
(5) embodiment
Below in conjunction with drawings and Examples the utility model is described in further details.
Embodiment as shown in Figure 1, the utility model comprises: valve body 2, valve core rod 3, flap 4, pressure-sensitive diaphragm 7, spring 1 and differential pressure adjusting device 5, load and MEDIA FLOW are to perpendicular longitudinal valve core bar 3 in the inner chamber of valve body 2, load flap 4 is connected the size that the change circulation area is come the controlling liquid flow movingly with the interior seat hole of valve body 2 on the body of rod of valve core rod 3, valve core rod 3 bottoms connect spring 1, the top connects pressure-sensitive diaphragm 7, the peripheral embedding of diaphragm 7 is connected in valve body 2 tops, by pressure-sensitive diaphragm 7 and flap 3 inner chamber of valve body 2 is divided into left side (valve outlet port side), right side (valve inlet side), three pressure in diaphragm top side divide the chamber, and in the side body portion load of valve body 2 that to connect branch chamber, diaphragm both sides be the differential pressure adjusting device 5 of diaphragm top side and valve inlet side-cavity, also be equiped with the PRESSURE PIPE 6 in pressure branch chamber, connecting valve interior diaphragm top side at valve body 2 tops.
Differential pressure adjusting device 5 in the utility model is an adjustable restrictive valve, joins to be connected in valve body 2 and to connect diaphragm epicoele and valve inlet side-cavity respectively, or joins other differential pressure adjusting device.
For making this valve control pressure reduction precision high and stable, through several experimental study and comprehensive analysis, the thickness of determining pressure-sensitive diaphragm 7 working portions be preferably designed for 0.68～0.72 millimeter (the best is 0.7 millimeter) by burying the flexible sheet that fine Ethylene Propylene Terpolymer, butylbenzene, butyronitrile, neoprene synthetic rubber composite material are made.
Claims (3)
1. Differential Pressure Controller, it comprises valve body (2), valve core rod (3), flap (4), pressure-sensitive diaphragm (7), spring (1), it is characterized in that also comprising differential pressure adjusting device (5), valve body (2) be in the inner chamber load with MEDIA FLOW to perpendicular valve core rod (3), the flap (4) that is connected movingly with the interior seat hole of valve body (2) in load on the body of rod of valve core rod (3), valve core rod (3) bottom connects spring (1), the top connects pressure-sensitive diaphragm (7), the inner chamber of valve body (2) is divided into the valve outlet port side by pressure-sensitive diaphragm (7) and flap (4), three pressure in valve inlet side and diaphragm top side divide the chamber, the differential pressure adjusting device (5) that connects diaphragm top side and valve inlet side-cavity in valve body (2) side body portion load, also be fitted with the PRESSURE PIPE (6) that is communicated with pressure branch chamber, valve body interior diaphragm top side at valve body (2) top.
2. Differential Pressure Controller according to claim 1 is characterized in that differential pressure adjusting device (5) is adjustable restrictive valve.
3. differential pressure control valve according to claim 1, the thickness that it is characterized in that pressure-sensitive diaphragm (7) working portion are 0.68～0.72 millimeter flexible sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01267873 CN2511842Y (en) | 2001-10-23 | 2001-10-23 | Self-fource pressure difference control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01267873 CN2511842Y (en) | 2001-10-23 | 2001-10-23 | Self-fource pressure difference control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2511842Y true CN2511842Y (en) | 2002-09-18 |
Family
ID=33674169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01267873 Expired - Lifetime CN2511842Y (en) | 2001-10-23 | 2001-10-23 | Self-fource pressure difference control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2511842Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102644983A (en) * | 2012-05-18 | 2012-08-22 | 苏州市时代工程咨询设计管理有限公司 | Ground-source heat pump system |
| CN102678731A (en) * | 2012-05-22 | 2012-09-19 | 淮海工学院 | Deep-water negative pressure adsorption equipment capable of fixing object under water |
| CN109058538A (en) * | 2018-09-10 | 2018-12-21 | 河北瑞资德机械有限公司 | Hotel bathing mixes water pressure stability contorting valve and system |
| CN109458659A (en) * | 2017-09-06 | 2019-03-12 | 崔荣桓 | Boiler including type variable differential flow regulating valve |
-
2001
- 2001-10-23 CN CN 01267873 patent/CN2511842Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102644983A (en) * | 2012-05-18 | 2012-08-22 | 苏州市时代工程咨询设计管理有限公司 | Ground-source heat pump system |
| CN102678731A (en) * | 2012-05-22 | 2012-09-19 | 淮海工学院 | Deep-water negative pressure adsorption equipment capable of fixing object under water |
| CN109458659A (en) * | 2017-09-06 | 2019-03-12 | 崔荣桓 | Boiler including type variable differential flow regulating valve |
| CN109058538A (en) * | 2018-09-10 | 2018-12-21 | 河北瑞资德机械有限公司 | Hotel bathing mixes water pressure stability contorting valve and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202222222U (en) | Multistage distributed type constant-pressure irrigation system | |
| CN102499020B (en) | Multilevel distribution type constant pressure irrigation system | |
| CN2511842Y (en) | Self-fource pressure difference control valve | |
| CN207178068U (en) | A kind of automobile-used integrated form feed system | |
| CN209540985U (en) | Mixed water heat exchange heating system | |
| CN202252208U (en) | Waterflow servo valve used for constant pressure | |
| CN201180905Y (en) | Variable flux system with hydraulic balance | |
| CN212536288U (en) | Simple synchronous shunting system | |
| CN2769510Y (en) | Multi-well combined constant-flow water distributor | |
| CN207406839U (en) | A kind of sealed water adjusting valve | |
| CN203431260U (en) | Angle type differential pressure valve | |
| CN108087611A (en) | A kind of Depressure valve of output pressure response traffic variation | |
| CN207777746U (en) | A kind of Depressure valve of output pressure response traffic variation | |
| CN208475457U (en) | Self-operated type balances heating system | |
| CN210484652U (en) | Flow balancing device | |
| CN202580184U (en) | Flow stabilizing device with main and secondary valve | |
| CN202756667U (en) | Water channel flux switching structure | |
| CN202153317U (en) | Constant pressure water supply waterpower module | |
| CN107740888A (en) | Lower resistance flows long water pipe | |
| CN218670872U (en) | Novel pressure reducing valve | |
| CN2244657Y (en) | Self-pressure stabilizing valve | |
| CN214196808U (en) | Temperature-sensitive one-way valve and return oil cooling module of hydraulic system | |
| CN213360665U (en) | High-automation hydraulic system for condenser forming machine | |
| CN221075386U (en) | Pressure reducing valve | |
| CN2367854Y (en) | Constant-flow regulation valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20111023 Granted publication date: 20020918 |