CN103206563B - Differential pressure open-close safety check - Google Patents
Differential pressure open-close safety check Download PDFInfo
- Publication number
- CN103206563B CN103206563B CN201310158075.8A CN201310158075A CN103206563B CN 103206563 B CN103206563 B CN 103206563B CN 201310158075 A CN201310158075 A CN 201310158075A CN 103206563 B CN103206563 B CN 103206563B
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- China
- Prior art keywords
- valve
- pressure
- piston
- outlet port
- mouth
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- Expired - Fee Related
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Abstract
Differential pressure open-close safety check, valve body (2) there are valve import (3), valve outlet port (6) and high-pressure mouth (8), valve body (2) inside is provided with oil hydraulic cylinder, piston (9) is installed in high-pressure mouth (8) inner side, piston (9) is by guide support (4) connecting fluid cylinder pressure, install valve block (5) in valve outlet port (6), valve block (5) is by the connecting rod connecting fluid cylinder pressure the other end.Piston is with pressure differential.Adopt and be connected across that pipeloop is enterprising, backwater brings out mouth and stop circulating water to pass back into the phenomenon of equipment with pressure differential, water body back-up system stable operation, structure is brief and concise, be easy to manufacture, installation, maintenance and stable operation, safeguard safe and convenient to use, save installing space, expense, energy-conserving and environment-protective, effect is given prominence to.
Description
Technical field
The invention belongs to heat/cool circulation means technology, to stop high-order water to reflux, especially differential pressure open-close safety check.
Background technique
In prior art, normal-pressure boiler direct heating and water evaporation water chiller cooling, when boiler, water chiller position are lower than load, the backflow of termination of pumping rear high-lying water body cannot be held, open system, high rise building heating/cold, need by heat exchanger with intermediate water heat/cool, obviously these general technology all exist and increase considerably equipment investment, there is the realistic situations such as temperature difference in the heat exchange of hold facility larger space, on secondary heating cycle water pipeline, because system is closed, with open system every, by the backwater of pressure differential.Do not find that practical improvement opportunity is open through retrieval.
Summary of the invention
The object of this invention is to provide differential pressure open-close safety check, to solve high-order current when open system water source is in low level, with the method structure of economy solve heat/cool circulate in termination of pumping after in time adjustment water (flow) direction reflux with high-order water.
Realize goal of the invention measure of the present invention to be: valve body has valve import, valve outlet port and high-pressure mouth, valve inner is provided with oil hydraulic cylinder, installs piston inside high-pressure mouth, and piston is by guide support connecting fluid cylinder pressure, install valve block in valve outlet port, valve block is by the connecting rod connecting fluid cylinder pressure the other end.Wherein, piston is with pressure differential.Be connected high-pressure mouth by connecing high pressure branch between exit of pump with one-way valve, under water pump nominal operating condition, piston base pressure is greater than static pressure, so at this moment the piston valve block that moves up leaves, valve inner valve pocket is unimpeded, and circulating water flow enters valve body from valve import, and flows out from valve outlet port; In addition, when water pump quits work, high pressure disappears, and piston moves down band moving valve plate sealing orifice under hydrostatic pressure, but due to one-way valve prevention, high-order water can not reflux from influent side.
The invention has the advantages that, adopt and be connected across that pipeloop is enterprising, backwater brings out mouth and stop circulating water to pass back into the phenomenon of equipment with pressure differential, water body back-up system stable operation, structure is brief and concise, be easy to manufacture, installation, maintenance and stable operation, safeguard safe and convenient to use, save installing space, expense, energy-conserving and environment-protective, effect is given prominence to.
Accompanying drawing explanation
Fig. 1 is mounting structure schematic diagram of the present invention
Reference character comprises:
Load 1, valve body 2, valve import 3, guide support 4, valve block 5, valve outlet port 6, one-way valve 7, high-pressure mouth 8, piston 9, water pump 10, open hot/cold source device 11.
Embodiment
The present invention mainly comprises valve body 2, valve import 3, guide support 4, valve block 5, valve outlet port 6 and high-pressure mouth 8.
Valve body 2 has valve import 3, valve outlet port 6 and high-pressure mouth 8, valve body 2 inside is provided with oil hydraulic cylinder, installs piston 9 inside high-pressure mouth 8, and piston 9, by guide support 4 connecting fluid cylinder pressure, installs valve block 5 in valve outlet port 6, and valve block 5 is by the connecting rod connecting fluid cylinder pressure the other end.
Wherein, piston 9 outer rim and high-pressure mouth 8 inner edge close contact.Valve block 5 is arranged on righting device, and its front outer diameter is identical with valve outlet port 6 inner edge diameter.
The present invention in use, pipeline is installed as shown in Figure 1, open hot/cold source device 11 exports the valve import 3 connected on valve body 2, valve outlet port 6 on valve body 2 accesses open hot/cold source device 11, open hot/cold source device 11 exports water pump 10 and one-way valve 7, water pump 10 exports and is connected high-pressure mouth 8 with between one-way valve 7 by connecing high pressure branch, and one-way valve 7 accesses open hot/cold source device 11 entrance again; Work run time, under water pump 10 nominal operating condition, piston 9 base pressure is greater than static pressure, so at this moment piston 9 valve block 5 that moves up leaves, the inner valve pocket of valve body 2 is unimpeded, and circulating water flow enters valve body 2 from valve import 3, and flows out from valve outlet port 6; In addition, when water pump 10 quits work, high pressure disappears, and piston 9 moves down band moving valve plate 5 sealing orifice under hydrostatic pressure, but stops due to one-way valve 7, and high-order water can not reflux from influent side, and meanwhile, the liquid that load 1 is flowed out enters valve body 2 by valve import 3.
In the embodiment above, not and the safety described, and mounting technique, and other necessary technologies etc. relating to enforcement adopt prior art, enumerate detailed description no longer successively.
Claims (1)
1. differential pressure open-close safety check, it is characterized in that, valve body (2) there are valve import (3), valve outlet port (6) and high-pressure mouth (8), valve body (2) inside is provided with oil hydraulic cylinder, piston (9) is installed in high-pressure mouth (8) inner side, piston (9) is by guide support (4) connecting fluid cylinder pressure, install valve block (5) in valve outlet port (6), valve block (5) is by the connecting rod connecting fluid cylinder pressure the other end; Wherein, piston (9) is with pressure differential; Water pump (10) outlet is connected high-pressure mouth (8) with between one-way valve (7) by high pressure branch, under water pump (10) nominal operating condition, piston (9) base pressure is greater than static pressure, so at this moment piston (9) move up band moving valve plate (5) leave, valve body (2) inner valve pocket is unimpeded, circulating water flow enters valve body (2) from valve import (3), and flows out from valve outlet port (6); In addition, when water pump (10) quits work, high pressure disappears, and piston (9) moves down the outlet of band moving valve plate (5) seal valve under hydrostatic pressure, but because one-way valve (7) stops, high-order water can not reflux from influent side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310158075.8A CN103206563B (en) | 2013-05-02 | 2013-05-02 | Differential pressure open-close safety check |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310158075.8A CN103206563B (en) | 2013-05-02 | 2013-05-02 | Differential pressure open-close safety check |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103206563A CN103206563A (en) | 2013-07-17 |
| CN103206563B true CN103206563B (en) | 2015-12-09 |
Family
ID=48753893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310158075.8A Expired - Fee Related CN103206563B (en) | 2013-05-02 | 2013-05-02 | Differential pressure open-close safety check |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103206563B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112484293B (en) * | 2020-11-20 | 2022-05-13 | 青岛经济技术开发区海尔热水器有限公司 | Instant electric water heater |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3789872A (en) * | 1972-05-31 | 1974-02-05 | R Elliott | Hydraulic control means for check valves |
| CN2402893Y (en) * | 2000-01-06 | 2000-10-25 | 卢咏林 | Slow-closing control system for non-return valve |
| CN2937702Y (en) * | 2006-08-11 | 2007-08-22 | 湖南泵阀制造有限公司 | Pipe force control valve |
| CN201106698Y (en) * | 2007-08-31 | 2008-08-27 | 株洲南方阀门股份有限公司 | Piston type fluid-control tabella valve |
| CN202432035U (en) * | 2012-01-13 | 2012-09-12 | 湖南中新设备制造有限公司 | Leather cup piston-type self-operated pipeline control valve |
-
2013
- 2013-05-02 CN CN201310158075.8A patent/CN103206563B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3789872A (en) * | 1972-05-31 | 1974-02-05 | R Elliott | Hydraulic control means for check valves |
| CN2402893Y (en) * | 2000-01-06 | 2000-10-25 | 卢咏林 | Slow-closing control system for non-return valve |
| CN2937702Y (en) * | 2006-08-11 | 2007-08-22 | 湖南泵阀制造有限公司 | Pipe force control valve |
| CN201106698Y (en) * | 2007-08-31 | 2008-08-27 | 株洲南方阀门股份有限公司 | Piston type fluid-control tabella valve |
| CN202432035U (en) * | 2012-01-13 | 2012-09-12 | 湖南中新设备制造有限公司 | Leather cup piston-type self-operated pipeline control valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103206563A (en) | 2013-07-17 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151209 Termination date: 20200502 |