CN202091585U - Differential pressure regulating valve for heating and air-conditioning system - Google Patents
Differential pressure regulating valve for heating and air-conditioning system Download PDFInfo
- Publication number
- CN202091585U CN202091585U CN2011202150382U CN201120215038U CN202091585U CN 202091585 U CN202091585 U CN 202091585U CN 2011202150382 U CN2011202150382 U CN 2011202150382U CN 201120215038 U CN201120215038 U CN 201120215038U CN 202091585 U CN202091585 U CN 202091585U
- Authority
- CN
- China
- Prior art keywords
- pressure
- valve
- adjusting
- membrane cover
- conditioning system
- 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
- 238000004378 air conditioning Methods 0.000 title claims abstract description 15
- 238000010438 heat treatment Methods 0.000 title claims abstract description 15
- 230000001105 regulatory effect Effects 0.000 title abstract description 3
- 239000012528 membrane Substances 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910000906 Bronze Inorganic materials 0.000 claims description 2
- 239000010974 bronze Substances 0.000 claims description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical group [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 2
- 238000007789 sealing Methods 0.000 abstract description 4
- 210000004907 gland Anatomy 0.000 abstract 2
- 108091006146 Channels Proteins 0.000 description 16
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 102000010637 Aquaporins Human genes 0.000 description 1
- 108010063290 Aquaporins Proteins 0.000 description 1
- 229910001369 Brass Inorganic materials 0.000 description 1
- 229910001060 Gray iron Inorganic materials 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Landscapes
- Safety Valves (AREA)
- Fluid-Driven Valves (AREA)
Abstract
The invention discloses a differential pressure regulating valve for a heating and air-conditioning system to control the constant differential pressure of a system loop; a valve body is installed on a water return pipeline and comprises a water return chamber and a water intake chamber; a differential pressure adjusting device comprises a hand wheel and a sealing cavity consisting of an upper membrane cover and a lower membrane cover; the hand wheel is connected to an adjusting shaft which is fixed in the sealing cavity via a bolt; an adjusting nut is in threaded connection with the adjusting shaft and a pressing nut is disposed below the adjusting shaft; a small pressing spring is sleeved on the adjusting shaft between the adjusting nut and the pressing nut; a pressure-sensing assembly consisting of an upper gland, a lower gland and a pressure-sensing membrane is arranged between the pressing nut and an upper valve seat; the pressure-sensing assembly is pressed tightly by the pressing nut in threaded connection with the upper end of the upper valve seat; the pressure-sensing membrane is tightly pressed by the upper membrane cover and the lower membrane cover, thereby dividing the sealing cavity into an upper cavity and a lower cavity; and the upper valve seat and a lower valve seat are located by a shaft shoulder, threaded-connected and provided with through holes.
Description
Technical field
The utility model belongs to the technical field of Hydraulic Power System, relates to a kind of pressure-difference valve that is used for heating and air-conditioning system particularly.
Background technique
In heating, air-conditioning system, in order to guarantee the balance of flow system flow, need the pressure reduction (being the pressure difference between the water-inlet cavity of supply channel and water return pipeline) between this system's loop of control constant.But in fact pressure reduction is very difficult constant, because can be subjected to the interference of ambient pressure conversion, and the interference of each loine pressure conversion of internal system.And present pressure-difference valve need frequently be regulated according to the hydraulic pressure of supply channel, water return pipeline, to keep pressure reduction constant.
The model utility content
Technology of the present utility model is dealt with problems and is: overcome the deficiencies in the prior art, provide a kind of control system loop pressure reduction the constant pressure-difference valve that is used for heating and air-conditioning system.
Technical solution of the present utility model is: this pressure-difference valve that is used for heating and air-conditioning system comprises valve body and differential pressure adjusting device, valve body is installed on the water return pipeline and comprises backwater cavity and water-inlet cavity, differential pressure adjusting device comprises handwheel and by last membrane cover, the Seal cage that following membrane cover is formed, handwheel is connected to the adjusting axle that is fixed in the Seal cage by screw, be threaded on the adjusting axle adjusting nut and below be provided with press female, be with small pressure spring on the adjusting axle between adjusting nut and the pressure mother, press between mother and the upper valve base and be provided with by upper press cover, the pressure-sensitive assembly that lower cover and pressure-sensitive diaphragm are formed, press mother to compress the pressure-sensitive assembly by being threaded with the upper end of upper valve base, thereby pressure-sensitive diaphragm is compressed by last membrane cover and following membrane cover Seal cage is divided into epicoele and cavity of resorption, upper valve base and lower valve base are located by the shaft shoulder, be threaded and be equipped with through hole, big compression spring sleeve on the lower valve base and an end be fixed on membrane cover down and the other end below the first end face cylindrical at upper valve base middle part, lower valve base stretches out following membrane cover and puts in backwater cavity, the lower valve base bottom is provided with the second end face cylindrical of controlling opening of valve, is provided with the guiding tube assembly that communicates with supply channel at last membrane cover near pressure-sensitive assembly place.
When the ambient pressure conversion, if supply channel (epicoele) pressure increases, backwater cavity pressure is constant, pressure-sensitive diaphragm drives lower valve base and moves down, promptly move to valve closing direction, the resistance of valve is increased, promptly water-inlet cavity (cavity of resorption) also increases with the pressure difference of backwater cavity, so water-inlet cavity pressure also increases thereupon, it is constant that effect supply channel by big small pressure spring and the pressure difference between the water-inlet cavity finally can balances; If supply channel pressure reduces, backwater cavity pressure is constant, pressure-sensitive diaphragm drives on the lower valve base and moves, promptly move to the valve opening direction, the resistance of valve is reduced, the pressure difference that is water-inlet cavity and backwater cavity also reduces, so water-inlet cavity pressure also reduces thereupon, it is constant that effect supply channel by big small pressure spring and the pressure difference between the water-inlet cavity finally can balances.Resistance when controlled loop inside changes, turn-off such as a certain branch road, the drag overall of loop increases, water-inlet cavity pressure increases, and pressure-sensitive diaphragm drives on the lower valve base and moves, and promptly moves to the valve opening direction, the resistance of valve is reduced, water-inlet cavity pressure reduces again, and it is constant finally to reach balance, so the pressure difference between supply channel and the water-inlet cavity is finally can balance constant; When the drag overall of loop reduced, water-inlet cavity pressure reduced, and pressure-sensitive diaphragm drives lower valve base and moves down, promptly move to valve closing direction, the resistance of valve is increased, water-inlet cavity pressure increases again, it is constant finally to reach balance, so the pressure difference between supply channel and the water-inlet cavity is finally can balance constant.
Description of drawings
Fig. 1 is the longitudinal sectional view that is used for the pressure-difference valve of heating and air-conditioning system according to of the present utility model.
Embodiment
Below the technical solution of the utility model is described in further detail.
As shown in Figure 1, this pressure-difference valve that is used for heating and air-conditioning system comprises valve body 3 and differential pressure adjusting device, valve body is installed on the water return pipeline and comprises backwater cavity B and water-inlet cavity A, differential pressure adjusting device comprises handwheel 20 and by last membrane cover 1, the Seal cage that following membrane cover 2 is formed, handwheel is connected to the adjusting axle 4 that is fixed in the Seal cage by screw 19, one shaft shoulder of adjusting axle and an interior edge face of last membrane cover 1 compress so that limit adjusting axle and move up, blocking adjusting axle with split washer 18 moves down so that limit adjusting axle, be threaded on adjusting axle adjusting nut 6 and below is provided with and presses female 8, be with small pressure spring 7 on the adjusting axle between adjusting nut and the pressure mother, press between mother and the upper valve base 12 and be provided with by upper press cover 9, the pressure-sensitive assembly that lower cover 11 and pressure-sensitive diaphragm 10 are formed, press mother to compress the pressure-sensitive assembly by being threaded with the upper end of upper valve base, thereby pressure-sensitive diaphragm is compressed by last membrane cover and following membrane cover Seal cage is divided into epicoele (identical with the pressure of supply channel) and cavity of resorption (identical with the pressure of the water-inlet cavity of water return pipeline), upper valve base and lower valve base 13 are located by the shaft shoulder, be threaded and be equipped with through hole (so that cavity of resorption pressure everywhere is identical), big stage clip 15 be enclosed within on the lower valve base and an end be fixed on down membrane cover and the first end face cylindrical of the other end in the middle part of upper valve base below, lower valve base stretches out following membrane cover and puts in backwater cavity, the lower valve base bottom is provided with the second end face cylindrical of controlling opening of valve, is provided with the guiding tube assembly (not shown) that communicates with supply channel at last membrane cover near pressure-sensitive assembly place.Certainly, for sealing better, can on the second end face cylindrical, be provided with seal ring 14.
Preferably, valve body material is a bronze, can bear bigger working pressure than gray cast iron, the brass body of same specification, and be applicable to particular surroundingss such as boats and ships, drill platform, beacon.
Preferably, handwheel is marked with the scale corresponding with pressure reduction.The interior hexagonal boss of handwheel outer ring matches with the interior hexagonal groove of last membrane cover, rotates handwheel head (linking to each other with inner ring), and indicateing arm moves up and down (indicateing arm and handwheel inner ring screw-thread fit) thereupon, shows set pressure difference.The operating pressure differential scope of this valve of handwheel mark is 250-700 mbar, dextrorotation handwheel head, scale indication pressure reduction augment direction.
Preferably, adjusting axle inner hollow and be provided with the adjusting screw rod 5 that is threaded with it, the adjusting screw rod top is provided with inner hexagonal hole and upper valve base is closed in the bottom.Adjusting screw rod 5 lower end caged valve seats move down, can the limiter valve apertures, close fully until valve.
Preferably, also be provided with valve and block up 16, loop and backwater cavity B conducting under can passing through on the membrane cover 2 are the designated lanes of the measurement backwater cavity pressure of reservation.
Preferably, also being provided with ball valve 17, with water-inlet cavity A conducting, is the designated lane of the measurement water-inlet cavity pressure of reservation, can also annotate draining by ball valve in addition.
Working principle of the present utility model is as follows:
When the ambient pressure conversion, if supply channel pressure increases, backwater cavity pressure is constant, pressure-sensitive diaphragm drives lower valve base and moves down, promptly move to valve closing direction, the resistance of valve is increased, promptly the pressure difference of water-inlet cavity and backwater cavity also increases, so water-inlet cavity pressure also increases thereupon, it is constant that effect supply channel by big small pressure spring and the pressure difference between the water-inlet cavity finally can balances; If supply channel pressure reduces, backwater cavity pressure is constant, pressure-sensitive diaphragm drives on the lower valve base and moves, promptly move to the valve opening direction, the resistance of valve is reduced, the pressure difference that is water-inlet cavity and backwater cavity also reduces, so water-inlet cavity pressure also reduces thereupon, it is constant that effect supply channel by big small pressure spring and the pressure difference between the water-inlet cavity finally can balances.Resistance when controlled loop inside changes, turn-off such as a certain branch road, the drag overall of loop increases, water-inlet cavity pressure increases, and pressure-sensitive diaphragm drives on the lower valve base and moves, and promptly moves to the valve opening direction, the resistance of valve is reduced, water-inlet cavity pressure reduces again, and it is constant finally to reach balance, so the pressure difference between supply channel and the water-inlet cavity is finally can balance constant; When the drag overall of loop reduced, water-inlet cavity pressure reduced, and pressure-sensitive diaphragm drives lower valve base and moves down, promptly move to valve closing direction, the resistance of valve is increased, water-inlet cavity pressure increases again, it is constant finally to reach balance, so the pressure difference between supply channel and the water-inlet cavity is finally can balance constant.
The above; it only is preferred embodiment of the present utility model; be not that the utility model is done any pro forma restriction; every foundation technical spirit of the present utility model all still belongs to the protection domain of technical solutions of the utility model to any simple modification, equivalent variations and modification that above embodiment did.
Claims (6)
1. the pressure-difference valve that is used for heating and air-conditioning system, it is characterized in that: comprise valve body (3) and differential pressure adjusting device, valve body is installed on the water return pipeline and comprises backwater cavity (B) and water-inlet cavity (A), differential pressure adjusting device comprises handwheel (20) and by last membrane cover (1), the Seal cage that following membrane cover (2) is formed, handwheel is connected to the adjusting axle (4) that is fixed in the Seal cage by screw (19), be threaded on adjusting axle adjusting nut (6) and below is provided with and presses female (8), be with small pressure spring (7) on the adjusting axle between adjusting nut and the pressure mother, press between female and the upper valve base (12) and be provided with by upper press cover (9), the pressure-sensitive assembly that lower cover (11) and pressure-sensitive diaphragm (10) are formed, press mother to compress the pressure-sensitive assembly by being threaded with the upper end of upper valve base, thereby pressure-sensitive diaphragm is compressed by last membrane cover and following membrane cover Seal cage is divided into epicoele and cavity of resorption, upper valve base and lower valve base (13) are located by the shaft shoulder, be threaded and be equipped with through hole, big stage clip (15) be enclosed within on the lower valve base and an end be fixed on down membrane cover and the first end face cylindrical of the other end in the middle part of upper valve base below, lower valve base stretches out following membrane cover and puts in backwater cavity, the lower valve base bottom is provided with the second end face cylindrical of controlling opening of valve, is provided with the guiding tube assembly that communicates with supply channel at last membrane cover near pressure-sensitive assembly place.
2. the pressure-difference valve that is used for heating and air-conditioning system according to claim 1 is characterized in that: valve body is bronze.
3. the pressure-difference valve that is used for heating and air-conditioning system according to claim 1 is characterized in that: handwheel is marked with the scale corresponding with pressure reduction.
4. the pressure-difference valve that is used for heating and air-conditioning system according to claim 1 is characterized in that: adjusting axle inner hollow and be provided with the adjusting screw rod (5) that is threaded with it, the adjusting screw rod top is provided with inner hexagonal hole and upper valve base is closed in the bottom.
5. the pressure-difference valve that is used for heating and air-conditioning system according to claim 1 is characterized in that: also be provided with the valve stifled (16) that communicates with backwater cavity.
6. the pressure-difference valve that is used for heating and air-conditioning system according to claim 5 is characterized in that: also be provided with the ball valve (17) that communicates with water-inlet cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202150382U CN202091585U (en) | 2011-06-23 | 2011-06-23 | Differential pressure regulating valve for heating and air-conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202150382U CN202091585U (en) | 2011-06-23 | 2011-06-23 | Differential pressure regulating valve for heating and air-conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202091585U true CN202091585U (en) | 2011-12-28 |
Family
ID=45366653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202150382U Expired - Lifetime CN202091585U (en) | 2011-06-23 | 2011-06-23 | Differential pressure regulating valve for heating and air-conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202091585U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102797881A (en) * | 2012-02-23 | 2012-11-28 | 武汉大禹阀门股份有限公司 | Quick-opening slow-closing water hammer relief valve |
| CN103363165A (en) * | 2012-03-27 | 2013-10-23 | 株式会社不二工机 | Reducing valve |
| CN105570501A (en) * | 2016-02-02 | 2016-05-11 | 石特阀门股份有限公司 | Novel gas pressure stabilizing and unloading valve |
| CN105864495A (en) * | 2016-05-30 | 2016-08-17 | 合肥通用机械研究院 | Dynamic differential pressure control valve |
| CN115977963A (en) * | 2022-12-30 | 2023-04-18 | 安徽银龙泵阀股份有限公司 | Corrosion-resistant large-flow mortar pump |
-
2011
- 2011-06-23 CN CN2011202150382U patent/CN202091585U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102797881A (en) * | 2012-02-23 | 2012-11-28 | 武汉大禹阀门股份有限公司 | Quick-opening slow-closing water hammer relief valve |
| CN103363165A (en) * | 2012-03-27 | 2013-10-23 | 株式会社不二工机 | Reducing valve |
| CN103363165B (en) * | 2012-03-27 | 2016-12-28 | 株式会社不二工机 | Air relief valve |
| CN105570501A (en) * | 2016-02-02 | 2016-05-11 | 石特阀门股份有限公司 | Novel gas pressure stabilizing and unloading valve |
| CN105570501B (en) * | 2016-02-02 | 2018-07-06 | 石特阀门股份有限公司 | A kind of new gas voltage stabilizing unloading valve |
| CN105864495A (en) * | 2016-05-30 | 2016-08-17 | 合肥通用机械研究院 | Dynamic differential pressure control valve |
| CN105864495B (en) * | 2016-05-30 | 2018-01-12 | 合肥通用机械研究院 | A kind of dynamic differential pressure control valve |
| CN115977963A (en) * | 2022-12-30 | 2023-04-18 | 安徽银龙泵阀股份有限公司 | Corrosion-resistant large-flow mortar pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202017801U (en) | Full-flow vertical-type screw check valve | |
| CN205244403U (en) | Two way seal control valve | |
| CN204922118U (en) | Relief pressure valve structure with adjustable pressure | |
| CN103322249A (en) | Direct-acting sequence valve | |
| CN205859278U (en) | A kind of direct-acting overflow valve | |
| CN103291986A (en) | Directly-operated type reducing valve | |
| CN102644760A (en) | Sealing structure of ultrahigh-pressure needle valve | |
| CN203335949U (en) | Lifting type check valve | |
| CN213145369U (en) | Branch pipe pressure reducing valve | |
| CN103644342A (en) | Pneumatic-control pollution-resistant zero-leakage cartridge pressure reducing valve | |
| CN205937888U (en) | Balanced type case structure of low temperature governing valve | |
| CN203477496U (en) | Pressure reducing valve device | |
| CN113324079B (en) | A low power consumption regulating valve with cut-off function | |
| CN210484667U (en) | Ball valve | |
| CN204472782U (en) | A kind of piston type pneumatic control shutoff valve | |
| CN203421244U (en) | Direct-acting pressure reduction valve | |
| CN202520972U (en) | Sealing structure for ultra-high-pressure needle valve | |
| CN203421204U (en) | A sealed regulating ball valve | |
| CN206338473U (en) | Automatically controlled delivery valve | |
| CN201180831Y (en) | Adjustable pressure reducing valve | |
| CN201896961U (en) | Ceramic-core valve capable of adjusting preload | |
| CN106838350A (en) | A kind of water conservancy stop valve with pressure protective device | |
| CN207715860U (en) | A kind of pressure reduction structure with check-valves | |
| CN202972144U (en) | Pneumatic diaphragm type decompressor | |
| CN205446792U (en) | Heavy -calibre intelligence water gauge valve accuse device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111228 |
|
| CX01 | Expiry of patent term |