CN202901420U - Overpressure control shutoff device - Google Patents
Overpressure control shutoff device Download PDFInfo
- Publication number
- CN202901420U CN202901420U CN 201220590354 CN201220590354U CN202901420U CN 202901420 U CN202901420 U CN 202901420U CN 201220590354 CN201220590354 CN 201220590354 CN 201220590354 U CN201220590354 U CN 201220590354U CN 202901420 U CN202901420 U CN 202901420U
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- China
- Prior art keywords
- main valve
- push rod
- valve body
- main
- flange
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- Expired - Fee Related
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Abstract
An overpressure control shutoff device comprises a main valve body, an inlet flange and an outlet flange are arranged on two sides of the main valve body respectively, a main valve port is arranged in the inner middle of the main valve body, a main valve piston is fixed on a main push rod mounted in the main valve body, a main valve plate is fixed on the lower portion of the main push rod, a reset spring is sleeved on the main push rod below the main valve plate, a sleeve extending inwards is arranged at the center of an inner arm of a bottom cover, and the front of the main push rod is inserted into the sleeve. The overpressure control shutoff device is characterized in that a control valve cavity positioned between an upper cover and the outlet flange is positioned outside the main valve body, the outer wall of the outlet flange is provided with an overpressure control port connected with the control valve cavity, a small push rod is arranged in the control valve cavity, a small piston is mounted at the lower end of the small push rod, a pressure-limiting regulator is fixed on the top surface of the upper cover, and a reset handle is mounted on the upper cover. The overpressure control shutoff device can be opened mechanically automatically by the aid of water produced during booster pump operation, and manual operation or other energy consumption is avoided.
Description
Technical field
The utility model relates to the high-rise direct connected control field, particularly relate to a kind of when the compression pump work of high-rise direct connected system, the automatic opening-closing water return pipeline prevents the super pressure control switching off device that pipeline is turned and produced vent plug and cause the low pressure line damage because of superpressure.
Background technique
The high-rise direct connected system all adopts compression pump to give high-rise user with the hot water pressurization by watering pipeline at present, after user's indoor heat exchanger is finished the heat supply service, after water return pipeline return boiler or heat exchanger additional heat, send high-rise user by the compression pump supercharging again.
Watering pipeline is blocked by check after the compression pump termination of pumping, and the backwater in the water return pipeline presses down back boiler or heat exchanger at Action of Gravity Field, will locate to occur to form the vent plug that negative pressure causes Air infitration to produce because of lack of water the user.The special valve of energy reliable turn-off when therefore, the backwater lateral line must be installed the compression pump termination of pumping.Special valve should be opened fully when compression pump starts.
When compression pump for some reason suddenly shutdown or boiler or heat exchanger break down, water return pipeline can produce very large backwater pressure, forms water hammer, and boiler or heat exchanger and heating network are damaged.Water return pipeline is in time turn-offed when exceeding working pressure, make boiler or heat exchanger and system works pressure keep balance, avoid damaging.
The superpressure fault occurs in the backwater lateral line, need fault investigated thoroughly and get rid of after can rerun, its special valve should have the manual reset device, prevents from the equipment such as boiler or heat exchanger not being damaged when just again moving fixing a breakdown.
The model utility content
The purpose of this utility model is to manufacture and design a kind of super pressure control switching off device, when making highrise heating system compression pump start work, automatically opens high-rise water return pipeline, and autoshutdown during termination of pumping prevents that the water return pipeline vent plug from occuring.When high-rise pressure of return water surpassed design pressure, the high-rise water return pipeline of present technique device autoshutdown was avoided occuring because high-rise pressure of return water superpressure causes the fault of pipeline and device damage.
The technological scheme that adopts is:
A kind of super pressure control switching off device comprises main valve body, loam cake, bottom, and upper part of the main valve body is connected with loam cake, and the main valve body bottom is connected with bottom.The main valve body both sides have respectively inlet flange and outlet(discharge) flange, middle part in the main valve body is provided with primary valve, is equiped with a primary push rod in the main valve body, is fixed with main valve piston on the primary push rod, the bottom of primary push rod is fixed with main valve plate, and the below that is positioned at main valve plate on the primary push rod is set with Returnning spring.The center of bottom inner arm extends internally and is provided with a sleeve, insert in the sleeve front portion of primary push rod, the outside of main valve body is provided with a control valve pocket between loam cake and outlet(discharge) flange, offer a super pressure control mouth that links to each other with the control valve pocket on the outer wall of outlet(discharge) flange, in the upper end portion in the control valve pocket is fixed with
Baffle plate, internal baffle is provided with the main valve relief hole, be provided with a little push rod in the control valve pocket, the lower end of little push rod is equiped with a small piston, on cover and offer one and open the valve control interface, be fixed with the pressure limiting regulator on the end face of loam cake, on cover reseting handle be installed, reseting handle one end is hinged on and covers, and reseting handle contacts with the pressure limiting regulator with little push rod.
The utility model patented technology has following features:
Automatic valve opening when 1, compression pump is started shooting: the super pressure control switching off device is automatic valve opening when high-rise compression pump start, and high-rise water return pipeline is opened.Compression pump closes valve after shutting down automatically, and high-rise water return pipeline is closed, and prevents from forming the vent plug that negative pressure causes Air infitration to produce because of lack of water.
2, the water return pipeline superpressure is closed valve automatically: when the super pressure control switching off device occurs surpassing the design pressure of low layer equipment at water return pipeline, automatically close valve, avoid forming water hammer, prevent from low layer equipment and low layer heating network are damaged.
3, superpressure is closed rear manual reset: after the super pressure control switching off device in the backwater lateral line superpressure fault autoshutdown occurs, reseting handle is upspring automatically, after investigating thoroughly that the superpressure reason is fixed a breakdown, must by manual reset, prevent from causing in the again operation of just not fixing a breakdown the damage of low layer equipment.
4, automatic is opened: the hydraulic pressure automatic that the super pressure control switching off device produces when utilizing compression pump work is opened, and need not manual operation or other energy consumption.
The sharp Ji Shu of the utility model Zhuan Installed puts and can finish described problem in the aforementioned background, reaches the order ground of heating system safe operation.
Description of drawings
Fig. 1 is the sharp Ji Shu of the utility model Zhuan Installed interposed structure schematic representation.
Embodiment
A kind of super pressure control switching off device comprises main valve body 1, loam cake 4, bottom 18, and main valve body 1 top is connected with loam cake 4, and main valve body 1 bottom is connected with bottom 18.Main valve body 1 both sides have respectively inlet flange 2 and outlet(discharge) flange 6, middle part in the main valve body 1 is provided with primary valve 3, be equiped with a primary push rod 9 in the main valve body 1, be fixed with main valve piston 10 on the primary push rod 9, the bottom of primary push rod 9 is fixed with main valve plate 11, and the below that is positioned at main valve plate 11 on the primary push rod 9 is set with Returnning spring 8.The center of bottom 18 inner arms extends internally and is provided with a sleeve 19, insert in the sleeve 19 front portion of primary push rod 9, the outside of main valve body 1 is provided with a control valve pocket 5 between loam cake 4 and outlet(discharge) flange 6, offer a super pressure control mouth 7 that links to each other with control valve pocket 5 on the outer wall of outlet(discharge) flange 6, upper end portion in the control valve pocket is fixed with internal baffle 13, internal baffle 13 is provided with main valve relief hole 17, be provided with a little push rod 14 in the control valve pocket 5, the lower end of little push rod 14 is equiped with a small piston 12, offer one on the loam cake 4 and open valve control interface 20, be fixed with pressure limiting regulator 15 on the end face of loam cake 4, on cover reseting handle 16 be installed, reseting handle 16 1 ends are hinged on and cover, and reseting handle 16 contacts with pressure limiting regulator 15 with little push rod 14.
Claims (1)
1. super pressure control switching off device, comprise main valve body, loam cake, bottom, upper part of the main valve body is connected with loam cake, the main valve body bottom is connected with bottom, the main valve body both sides have respectively inlet flange and outlet(discharge) flange, middle part in the main valve body is provided with primary valve, be equiped with a primary push rod in the main valve body, be fixed with main valve piston on the primary push rod, the bottom of primary push rod is fixed with main valve plate, the below that is positioned at main valve plate on the primary push rod is set with Returnning spring, and the center of bottom inner arm extends internally and is provided with a sleeve, and insert in the sleeve front portion of primary push rod, it is characterized in that: the outside of described main valve body is provided with a control valve pocket between loam cake and outlet(discharge) flange, offer a super pressure control mouth that links to each other with the control valve pocket on the outer wall of outlet(discharge) flange, be provided with a little push rod in the logical control valve pocket, the lower end of little push rod is equiped with a small piston, be fixed with the pressure limiting regulator on the end face of loam cake, on cover reseting handle be installed, reseting handle one end is hinged on and covers, and reseting handle contacts with the pressure limiting regulator with little push rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220590354 CN202901420U (en) | 2012-11-12 | 2012-11-12 | Overpressure control shutoff device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220590354 CN202901420U (en) | 2012-11-12 | 2012-11-12 | Overpressure control shutoff device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202901420U true CN202901420U (en) | 2013-04-24 |
Family
ID=48122091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220590354 Expired - Fee Related CN202901420U (en) | 2012-11-12 | 2012-11-12 | Overpressure control shutoff device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202901420U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331933A (en) * | 2017-01-20 | 2018-07-27 | 天津贝特尔流体控制阀门有限公司 | Automatically reset balanced valve |
-
2012
- 2012-11-12 CN CN 201220590354 patent/CN202901420U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331933A (en) * | 2017-01-20 | 2018-07-27 | 天津贝特尔流体控制阀门有限公司 | Automatically reset balanced valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130424 Termination date: 20161112 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |