- ball
- Gate valve
- butterfly valve
- Regulating valve
- Cut-off valve
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- Check valve
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- Safety valve
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- Sludge discharge valve
- Ammonia valve
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- Inlet valve
- Import actuator
Hydraulic quick closing check valve
- sell:021-32051999
- sell:021-32050777
- fax:021-66099555
Details
- Product Introduction
- Service Promise
- Ordering Process
Hydraulic exhaust check valve is installed in the exhaust horizontal pipeline from the middle and low pressure steam guide pipe of steam turbine. It is mainly to prevent the steam in the exhaust pipeline from backfilling in case of accident and cause turbine overspeed.
Structural characteristics
1. The valve plate adopts large oblique angle to shorten the opening and closing stroke, hydraulic (gas) closing aid to realize quick opening and closing, three-dimensional eccentric sealing structure, opening and sealing is separated, closing contact is sealed, opening and closing is light and flexible. (less than DN250 using cut-off mode)
2, the valve plate is assisted to close the thrust to achieve the purpose of cut-off and check.
3, fast closing time can reach 0.5~ 1 seconds, emergency cut-off is safe and reliable.
technical requirement
1. hydraulic source interface: RC1/2
2. hydraulic cylinder operating pressure: 0.5-0.8 MPa,
3. emergency cut off time; 0.5-1 seconds.
4. connecting flange: JB/T79-94 GB/9113.2000
5. structure length: GB 12221-89
6. supply voltage: AC220-DC24V (marked when ordering)
Model compilation
公稱通徑(mm) | 80~1600 | |||||
公稱壓力(MPa) | 0.6 | 1.0 | 1.6 | 2.5 | 4.0 | |
試驗壓力 | 強(qiáng)度試驗 | 0.9 | 1.5 | 2.4 | 3.75 | 6.0 |
密封試驗 | 0.66 | 1.1 | 1.76 | 2.75 | 4.4 | |
氣壓密封試驗 | 0.6 | |||||
適用介質(zhì) | 水、蒸汽、煤氣 | |||||
適用溫度(℃) | 軟密封:≤80℃;C碳素鋼-29-425℃; I合金鋼-29-530℃;P 鉻鎳鈦鋼與R鉻鎳鉬鈦鋼-196-600℃ |
1 | 閥體 | WCB | 12 | 端蓋 | WCB |
2 | 閥瓣 | 2Cr13/1Cr18NiTi | 13 | 閥軸 | 1Cr18NiTi |
3 | 閥桿 | 2Cr13/1Cr18NiTi | 14 | ||
4 | 導(dǎo)向套 | 2Cr13/1Cr18NiTi | 15 | 液壓源接管 | 銅管 |
5 | 填料 | 柔性石墨 | 16 | 2位5通電磁閥 | 組合件 |
6 | 填料壓蓋 | 25 | 17 | 關(guān)閥液壓管 | 銅管 |
7 | 支架 | WCB | 18 | 開閥液壓管 | 銅管 |
8 | 指示盤 | 25 | 19 | ||
9 | 閥桿 | 2Cr13/1Cr18NiTi | 20 | ||
10 | 助關(guān)液壓缸 | 組合件 | 21 | 信號反饋裝置 | 組合件 |
11 | 22 | 信號反饋裝置 | 組合件 |
23 | 閥體 | WCB | 33 | 助關(guān)液壓缸 | 組合件 |
24 | 閥瓣 | 2Cr13/1Cr18NiTi | 34 | 關(guān)閥液壓管 | 銅管 |
25 | 螺栓+螺母 | 標(biāo)準(zhǔn)件 | 35 | 開閥液壓管 | 銅管 |
26 | 閥桿 | 2Cr13/1Cr18NiTi | 36 | ||
27 | 填料 | 柔性石墨 | 37 | ||
28 | 填料壓蓋 | 25 | 38 | 信號反饋裝置 | 組合件 |
29 | 支架 | WCB | 39 | 信號反饋裝置 | 組合件 |
30 | 指示盤 | 25 | 40 | 2位5通電磁閥 | 組合件 |
31 | 液壓缸連接桿 | 2Cr13/1Cr18NiTi | 41 | 液壓源接管 | 銅管 |
32 | 42 |
可能發(fā)生的故障 | 原因 | 排除方法 |
密封面泄漏 | 1.閥瓣密封面夾有雜物 2.閥瓣關(guān)閉不到位 3.密封面刮傷 | 1.清理雜質(zhì).清洗閥門內(nèi)腔 2.調(diào)整連接件(圖中8、9處) 3.研磨密封面 |
閥門兩端面泄漏 | 1.兩側(cè)密封墊片失效 2.管法蘭壓緊力不夠或壓緊不均勻 | 1.更換密封墊片 2.壓緊法蘭螺栓 |
填料處泄漏 | 1.填料壓蓋螺母松動 2.填料損壞 | 1.擰緊壓蓋螺母(以填料不泄漏為準(zhǔn)) 2.更換填料 |
閥門不開閉 | 1控制線路故障 2電磁閥線圈燒壞 3.液壓源故障 | 1.檢查控制線路 2.更換線圈 3.檢查液壓源 |
The best quality, first-class service Qigao creates more value for you!
"Qigao Valve" expects to continuously improve service quality and strive for excellence. "Sincere service" is the eternal theme of "Qigao". "Qigao" strictly followsIS09001-2000 Quality system certification requirements, strict quality control, responsibility to people, to ensure the healthy operation of production, sales and service. Strengthen communication with users and provide quality products to our customers with perfection and perfect service. Hereby our factory makes the following commitments:
Product Standards:
Products in strict accordance with ChinaGB、HG Standard and USAPISuch as standard design, manufacturing, acceptance. The hardness of the sealing surface meets the requirements of the state and the width exceeds the national standard.
pre-sale service:
Product introduction, technical exchange, non-standard product design, troubleshooting。
Sale service:
A trustworthy contract guarantees timely delivery and keeps in touch with customers. For special or duplicate products, our factory arranges technicians to use and troubleshoot the products for users.
After sales service:
1、"Qigao" brand product quality period is from the factory12In the month, the implementation of the "three guarantees" service (return, replacement, warranty).
2、During the use of our products, our factory regularly organizes technical and quality inspection personnel to visit and consult users for feedback on product quality, usage status and improvement opinions, so as to further improve product quality.
3、Respond quickly to the quality of user complaints, after-sales service personnel rushed to the scene in 24-36 hours (48 hours outside the province).
4、For after-sales service, users are required to fill out the quality feedback information form after the service and make an appraisal opinion in order to improve the service quality of Qigao.
1、If the customer has special requirements for the product, the following instructions must be provided in the order contract.:
a、Structure length;
b、Connection Type;
c、Nominal diameter, full diameter, reduced diameter, pipe size;
d、Operating medium and temperature, pressure range;
e、Tests, inspection standards and other requirements
2、The factory can configure various types of driving devices according to customer's specific requirements.。
3、If the type and model of the valve are determined by the customer, the customer shall correctly state the meaning and requirements of the model and sign the contract under the condition that the supplier and the buyer understand each other.
4、For futures and order customers, please call us in advance to tell the required valve model, specification, quantity, delivery time and location, and timely transfer to the factory account according to the total 30% deposit or full payment. The rest of the payment is pending. Import before shipment to arrange delivery in time.
Order Process:
1、Customer purchase list fax to021-33872143,Or call us 021-33872141
2、Receive customer purchase list, provide valve model selection and quotation (price list)。
3、Specific agreement: delivery date, special requirements, etc.。
download Google:
1、If the customer has special requirements for the product, the following instructions must be provided in the order contract.:
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2、The factory can configure various types of driving devices according to customer's specific requirements.。
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3、If the type and model of the valve are determined by the customer, the customer shall correctly state the meaning and requirements of the model and sign the contract under the condition that the supplier and the buyer understand each other.
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4、For futures and order customers, please call us first to tell the required valve model, specifications, quantity, delivery time and location, and press the total30%The deposit or full payment will be remitted to our factory account in time., The rest of the payment will be remitted before shipment to arrange delivery in time.。
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Sale service:
Trustworthy contract, guarantee timely delivery, keep in touch with customers at any time。
For special or duplicate products, our factory arranges technicians to use and troubleshoot the products for users.
After sales service:
1、"Qigao" product quality period is from the factory12Month, practice“Three packs”Service (return, replacement, warranty)。
2、During the use of our products, our factory regularly organizes technical and quality inspection personnel to visit and consult users for feedback on product quality, usage status and improvement opinions.,
In order to further improve product quality。
3、Respond quickly to the quality of user complaints, after-sales service personnel24-36Hours (outside the province48Hour) rushed to the scene。
4、For after-sales service, the user is required to fill out the quality feedback information form after the service and make an appraisal opinion in order to improve the service quality of “Qigao”.。
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