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Self-operated pressure regulating valve


Self-operated pressure regulating valve
Stable quality: implement quality monitoring throughout the process, meticulous and comprehensive detection!

Reasonable price: efficient internal cost control, reducing expenses and benefiting customers!

Fast delivery: advanced production lines, sufficient stocking, shortening the delivery time!
Sales: 021-31007323
Fax: 021-333321522
Technology: 021-31007323

product manual Pledge Order process

 

  Product name : Self-operated pressure regulating valve Product model : ZZY, ZZYP
   Driving method : Self-supporting Connection form : Flange
   Structure form : Single seat, double seat, sleeve    Sealing material : rubber
   Pressure range : ~6.4MPa 1.0 ~ 6.4MPa    Nominal diameter : -DN250 DN15 -DN250
   Common materials : Carbon steel, stainless steel    Technical consultation : 021-31007323

是国内著名〖 自力式压力调节阀 〗制造商,也是国内大型【 调节阀门 】生产商之一,公司自成立以来始终围绕客户的需求并持续创新,为广大的代理商和企业客户提供〖自力式压力调节阀 〗解决方案,质量可靠,价格实惠,故畅销全国各地,欢迎新老客户来电,来函,我们将为您提供最优质的服务。 Hushan Valve Manufacturing (Shanghai) Co., Ltd. is a well-known domestic [ self-operated pressure regulating valve ] manufacturer and one of the large domestic [ regulating valve ] manufacturers. Since its establishment, the company has always focused on customer needs and continued innovation for the majority of Agents and corporate customers provide the "self-operated pressure regulating valve" solution, which is reliable in quality and affordable in price, so it sells all over the country. Welcome new and old customers to call us and email us. We will provide you with the best service.

 

I. Introduction of self-operated pressure regulating valve:
 
       压力调节阀 分为自力式压力、压差和流量调节阀三个系列。 The self-operated pressure regulating valve is divided into three series: self-operated pressure, differential pressure and flow regulating valve. ; 取压点在阀后时,用于调节阀后压力恒定。 The self-operated pressure regulating valve is divided into two types according to the position of the pressure taking point: before the valve and when the pressure taking point is in front of the valve, it is used to adjust the pressure before the valve is constant ; when the pressure taking point is behind the valve, it is used to adjust the pressure after the valve is constant. . When the pressure before and after the valve is introduced to both sides of the air chamber of the actuator at the same time, the self-operated pressure difference regulating valve can adjust the pressure at both ends of the regulating valve to be constant, and the pressure difference between the two ends of the orifice plate installed on the pipeline can be introduced into the film for execution. On both sides of the air chamber of the mechanism, a self-operating flow regulating valve is formed, or the flow is adjusted by using a self-operating pressure difference regulating valve after detecting the flow in other ways.


、自力式压力调节阀工作原理: Working principle of self-operated pressure regulating valve:

   1 Front valve control principle

(K) ,其初始阀芯的位置在关闭状态。 Self-operated valve front pressure control (K) , the initial spool position is closed.

P1 通过阀芯、阀座的节流后变为阀后压力 P2 ,同时 P1 通过管线输入上膜室作用在膜片上,其作用力与弹簧的反作用力相平衡时阀芯位置决定了阀的开度,从而控制阀前压力。 When the pre-valve pressure P1 passes through the throttling of the valve core and the valve seat, it becomes the post-valve pressure P2 . At the same time, P1 acts on the diaphragm through the input of the upper film chamber through the pipeline. Determines the opening of the valve to control the pressure before the valve.

P1 增加时, P1 作用在膜片上的作用力也随之 When the pressure P1 before the valve increases, the force of P1 on the diaphragm will also follow

Front valve control principle

increase. P1 向阀后泄压,直到膜片上的作用力与弹簧反作用力相平衡为止,从而使 P1 降为设定值。 At this time, the force on the diaphragm is greater than the reaction force of the set spring, which moves the valve core away from the valve seat, resulting in a larger valve opening and a smaller flow resistance. P1 releases pressure behind the valve until the diaphragm The acting force on the spring is balanced with the reaction force of the spring, thereby reducing P1 to the set value. P1 降低时动作方向与上述相反,这就是阀前压力调节的工作原理。 Similarly, when the pressure P1 before the valve decreases, the action direction is opposite to the above, which is the working principle of the pressure before the valve.


3. Pressure control after self-operated pressure regulating valve:

P1 经过阀芯、阀座后的节流后,变为阀后压力 P2 The pre-valve pressure P1 of the working medium passes through the throttling behind the valve core and the valve seat, and then becomes the post-valve pressure P2 . 经过控制管线输入到执行器的下膜室内作用在顶盘上,产生的作用力与弹簧的反作用力相平衡,决定了阀芯、阀座的相对位置,控制阀后压力。 P2 is input into the lower diaphragm chamber of the actuator through the control line to act on the top plate. The generated force is balanced with the reaction force of the spring, which determines the relative positions of the valve core and the valve seat, and controls the pressure behind the valve. P2 增加时, P2 作用在顶盘上的作用力也随之增加。 When the pressure P2 behind the valve increases, the force of P2 on the top plate also increases. At this time, the force of the top plate is greater than the reaction force of the spring, and the valve core is closed to the position of the valve seat until the force of the top plate is balanced with the reaction force of the spring. P2 降为设定值。 At this time, the flow area between the valve core and the valve seat is reduced, and the flow resistance is increased, thereby reducing P2 to the set value. P2 降低时,作用方向与上述相反,这就是自力式 ( 阀后 ) 压力调节阀的工作原理。 Similarly, when the pressure P2 behind the valve decreases, the action direction is opposite to that described above. This is the working principle of the self-acting ( behind ) pressure regulating valve. This type of valve should generally be installed horizontally in the pipeline.

   当需要改变阀后压力 P2 的设定值时,可调整调节螺母。 Pressure regulating valve When the setting value of the pressure P2 behind the valve needs to be changed , the adjusting nut can be adjusted.


Fourth, self-operated pressure regulator valve pressure control:
 

P1 经过阀芯、阀座后的节流后,变为阀后压力 P2 The pre-valve pressure P1 of the working medium passes through the throttling behind the valve core and the valve seat, and then becomes the post-valve pressure P2 . P1 经过控制管线输入到执行器的上膜室内作用在顶盘上,产生的作用力与弹簧的反作用力相平衡,决定了阀芯、阀座的相对位置,控制阀前压力。 At the same time, P1 is input into the upper membrane chamber of the actuator through the control line and acts on the top plate. The generated force is balanced with the reaction force of the spring, which determines the relative positions of the valve core and the valve seat, and controls the pressure before the valve. P1 增加时, P1 作用在顶盘上的作用力也随之增加。 When the pressure P1 before the valve increases, the force of P1 on the top plate also increases. At this time, the force of the top plate is greater than the reaction force of the spring, and the valve core is moved in a direction away from the valve seat until the force of the top plate is balanced with the reaction force of the spring. P1 降为设定值。 At this time, the flow area between the valve core and the valve seat is increased, and the flow resistance is reduced , thereby reducing P1 to a set value. P1 降低时,作用方向与上述相反,这就是自力式 ( 阀前 ) 压力调节阀的工作原理。 Similarly, when the pressure P1 before the valve decreases, the action direction is opposite to that described above. This is the working principle of the self-operated ( front valve ) pressure regulating valve.

P1 的设定值时,可调整调节螺母。 When the setting value of the pressure P1 before the valve needs to be changed , the adjusting nut can be adjusted.

V. Technical parameters of self-operated pressure regulating valve:
 

main feature

   、自力式压力调节阀无需外加能源,能在无电无气的场合工作,既方便又节约能源。 1. Self-operated pressure regulating valve does not need additional energy, and can work in places without electricity and air, which is convenient and saves energy.

   、压力分段范围细且互相交叉,调节精度高。 2. The pressure segmentation range is narrow and cross each other, and the adjustment precision is high.

   、压力设定值在运行期间可连续设定。 3. The pressure setpoint can be set continuously during operation.

   、对阀后压力调节,阀前压力与阀后压力之间比为 10:1~10:8 4. Adjust the pressure after the valve, the ratio between the pressure before the valve and the pressure after the valve is 10: 1 ~ 10: 8

   、橡胶膜片式检测,执行机构检测精度高、动作灵敏。 5. Rubber diaphragm detection, high precision and sensitive action of the actuator.

   、采用压力平衡机构,使调节阀反应灵敏,控制精确。 6. The pressure balancing mechanism is adopted to make the regulating valve respond sensitively and control accurately.

Technical Parameters

DN15 20 25 32 40 50 65 80 100 125 150 200 250mm Nominal diameter: DN15 , 20 , 25 , 32 , 40 , 50 , 65 , 80 , 100 , 125 , 150 , 200 , 250mm

PN1.0 1.6 4.0 6.4MPa Nominal pressure: PN1.0 , 1.6 , 4.0 , 6.4MPa

ANSI JIS DIN GB JB( 特殊可按用户提供 ) Flange standards: ANSI , JIS , DIN , GB , JB ( special can be provided according to users )

(ZG230-450) 、铸不锈钢 (ZG1Cr18Ni9Ti ZG1Cr18Ni12Mo2Ti) Body material: cast steel (ZG230-450 ) , cast stainless steel (ZG1Cr18Ni9Ti , ZG1Cr18Ni12Mo2Ti)

-- 不锈钢 (1Cr18Ni9Ti 1Cr18Ni12Mo2Ti); 软密封 -- 不锈钢镶嵌橡胶圈 Spool material: hard seal - stainless steel (1Cr18Ni9Ti , 1Cr18Ni12Mo2Ti); soft seal - stainless steel inlaid rubber ring

(DN15 125) 、平衡膜片 (DN150 250) Pressure balance: stainless steel bellows (DN15 125) , balance diaphragm (DN150 250)

Performance index of self-operated pressure regulating valve:
 

category

model

category

model

Single-seat pressure-closing type

ZZYP-16-64B

Single seat pressure open type

ZZYP-16-64K

Double-seat pressure-closing type

ZZYN-16-64B

Double seat pressure open type

ZZYN-16-64K

Sleeve pressure-closing type

ZZYM-16-64B

Sleeve pressing open type

ZZYM-16-64K


Application range of self-operated pressure regulating valve:
 

电动调节阀 是在无电、无气的场合下,利用被调介质本身压力变化控制阀前 (K ) 或阀后 (B ) 压力的恒压或减压,附设冷凝器,可在 350 摄氏度蒸汽下连续使用,薄膜式用于小于等于 0.7MPa 压力、活塞式用于 0.7 2.5 兆帕压力,广泛应用于石油、化工、电力、冶金、食品、轻纺等各种工业设备中气体、液体、蒸汽介质减压、泄压、稳压。 The direct-acting self- operated electric regulating valve is used to control the constant pressure or pressure reduction of the pressure before the valve (K type ) or after the valve (B type ) by using the pressure change of the medium being adjusted in the absence of electricity and air. Can be used continuously under steam of 350 degrees Celsius, film type is used for pressure less than or equal to 0.7MPa , piston type is used for pressure of 0.7 ~ 2.5 MPa, widely used in various industries such as petroleum, chemical industry, electric power, metallurgy, food, light textile The gas, liquid, and steam media in the equipment are decompressed, depressurized, and stabilized.


Product features of self-operated pressure regulating valve:

The self-operated pressure regulating valve does not require additional energy and can work in places without electricity and air, which is convenient and saves energy. The pressure ranges are narrow and cross each other, and the adjustment precision is high. The pressure setpoint can be set continuously during operation. 10 1 10 8 For adjusting the pressure behind the valve, the ratio between the pressure before the valve and the pressure after the valve can be 10 : 1 to 10 : 8 . Rubber diaphragm detection, high accuracy and sensitive action. The pressure balancing mechanism is adopted to make the regulating valve respond sensitive and control accurately.

Nine, the main material of self-operated pressure regulating valve:
 

ZG230-450 ZG1Cr18Ni9Ti ZGCr18Ni12Mo2Ti Valve body: ZG230-450 , ZG1Cr18Ni9Ti , ZGCr18Ni12Mo2Ti

1Cr18Ni9Ti Cr18Ni12Mo2Ti Spool: 1Cr18Ni9Ti , Cr18Ni12Mo2Ti

1Cr18Ni9Ti Cr18Ni12Mo2Ti Valve seat: 1Cr18Ni9Ti , Cr18Ni12Mo2Ti

1Cr18Ni9Ti Cr18Ni12Mo2Ti Stem: 1Cr18Ni9Ti , Cr18Ni12Mo2Ti

A3 A3 钢涂四氟乙烯 Membrane cover: A3 , A3 steel coated with Teflon stainless steel Fillers: Nitrile, Ethylene, Fluorine, Oil Resistant Rubber


X. Technical parameters and performance dimensions of self-operated pressure regulating valve:
 

压力调节阀主要技术参数 Main technical parameters of pressure regulating valve

mm Nominal diameter mm

15

20

25

32

40

50

65

80

100

125

150

200

250

300

Kv Rated flow coefficient Kv

3.2

6

10

16

25

40

65

100

160

250

400

650

1000

1600

mm Rated stroke mm

 

8

8

10

10

14

20

20

25

40

40

50

60

70

Mpa Nominal pressure Mpa

  4.0 6.4 1.6 ; 4.0 ; 6.4

Medium temperature

  +350 ≥80 ,配隔离液器) -25 +350 ( ≥80 , equipped with isolation liquid device)

Flow characteristics

Open quickly

Kpa Pressure adjustment range Kpa

  140 120 300 280 500 480 1000 15 to 140 ; 120 to 300 ; 280 to 500 ; 480 to 1000

Decompression ratio

/ 阀后压力 1.25 10 Pressure before valve / pressure after valve 1.25 10

Actuator

  DA5 DA1 DA5

Flange standard

  GB2555-81 PN64 ); PN1.6 凸面法兰; PN4.0 PN6.4 凹面法兰 GB9113-88 , GB2555-81 ( PN64 ); PN1.6 convex flange; PN4.0 , PN6.4 concave flange

Body material

  ZG230-450   ZG1Cr18Ni9Ti   ZGCr18Ni1Mo2Ti

Spool, seat, stem

  1Cr18Ni9Ti   Cr18Ni1Mo2Ti

Mode of action

  :常开(压力增加时关闭); K :常闭(压力增加时开启) B : normally open (closed when pressure increases); K : normally closed (opened when pressure increases)

L/h Allowable leakage L / h

10-4Kv ;软密封型 10-7Kv Hard-sealed type 10-4 Kv ; soft-sealed type 10-7 Kv

Ambient temperature

  +55 -25 +55


性能指标 Performance Index

control precision

5%

L/h Allowable leakage L / h

Hard seal

阀额定容量 10 -4 valve rated capacity

Soft seal

Near-zero leakage

 

 

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