-
AboutThe company is eager to collaborate with users, foster friendships, and jointly advance our shared cause. Guided by technological innovation, we strive to ensure that our product quality consistently meets and exceeds customers’ ever-increasing demands. By leveraging advanced technologies, we aim to drive rapid enterprise growth and make an even greater contribution to the development of China’s pump industry.
-
ProductsThe company is eager to collaborate with users, foster friendships, and jointly advance our shared cause. Guided by technological innovation, we strive to ensure that our product quality consistently meets and exceeds customers’ ever-increasing demands. By leveraging advanced technologies, we aim to drive rapid enterprise growth and make an even greater contribution to the development of China’s pump industry.
-
BlogThe company is eager to collaborate with users, foster friendships, and jointly advance our shared cause. Guided by technological innovation, we strive to ensure that our product quality consistently meets and exceeds customers’ ever-increasing demands. By leveraging advanced technologies, we aim to drive rapid enterprise growth and make an even greater contribution to the development of China’s pump industry.
-
CaseThe company is eager to collaborate with users, foster friendships, and jointly advance our shared cause. Guided by technological innovation, we strive to ensure that our product quality consistently meets and exceeds customers’ ever-increasing demands. By leveraging advanced technologies, we aim to drive rapid enterprise growth and make an even greater contribution to the development of China’s pump industry.
-
Technical supportThe company is eager to collaborate with users, foster friendships, and jointly advance our shared cause. Guided by technological innovation, we strive to ensure that our product quality consistently meets and exceeds customers’ ever-increasing demands. By leveraging advanced technologies, we aim to drive rapid enterprise growth and make an even greater contribution to the development of China’s pump industry.
-
ContactsThe company is eager to collaborate with users, foster friendships, and jointly advance our shared cause. Guided by technological innovation, we strive to ensure that our product quality consistently meets and exceeds customers’ ever-increasing demands. By leveraging advanced technologies, we aim to drive rapid enterprise growth and make an even greater contribution to the development of China’s pump industry.
QDY-type petrochemical process pump
Operating temperature (T): -45 to +450℃ (can reach -196℃ for special requirements)
Head (H): 105–2465 mH₂O
Keywords:
Category:
- Product Description
-
Overview:
To adapt to equipment upgrades and replacements centered on enhancing reliability and energy efficiency, our company has comprehensively introduced advanced technologies from both domestic and international sources and, in reference to the API610 standard, has developed and launched the QDY series of multistage petrochemical process pumps.
Pumps are widely used in facilities such as those in the petroleum and chemical industries—for example, refineries with capacities of one or ten million tons per year, ethylene plants with capacities of one million tons per year, synthetic ammonia plants, coal-to-methanol plants, fertilizer plants, and key projects in the aviation industry. They are particularly well-suited for conveying media that are high-temperature, high-pressure, medium-pressure, flammable, explosive, or corrosive—and that contain no solid particles.
The product has the following advantages:
1. It adopts a highly efficient and energy-saving hydraulic model with high efficiency and excellent cavitation resistance.
2. Low vibration and noise, reliable operation, and easy maintenance.
3. The pump’s bearing and sealing components have been improved, extending their service life.
4. The components have a high degree of standardization and are fully interchangeable.
Performance range:
Flow rate Q = 1.5–700 m³/h
Head H = 105–2465 mH₂O
Temperature T = -45 to +450℃ (can reach -196℃ for special requirements)
Model meaning:
QDY(P)500-1200
Q—Corporate Identity
DY—Multistage Petrochemical Process Pump
P—The pump features a horizontal suction design; when no “(P)” marking is present, the pump has a vertical suction and vertical discharge design.
500—Rated flow is 500 m³/h; 1200—Rated head is 1200 m.
Structural features:
The pump features a single-casing, segmental design and is engineered to operate under high-temperature and high-pressure conditions. The suction section, middle section, and discharge section are integrated into a single unit via through-bolts. The static mating surfaces between these sections rely primarily on metal-to-metal sealing, with O-rings provided as auxiliary seals.
The pump’s suction flange and discharge flange can be arranged according to user requirements. Generally, there are two main types: one features vertical suction and vertical discharge; the other features horizontal suction and vertical discharge.
The pump rotor is a rigid rotor composed of components such as an impeller, shaft sleeve, and balance disc mounted on the shaft. The pump shaft has a large diameter, which fully ensures stable and reliable pump operation.
Shaft end seal
The seal housings on both the drive side and the non-drive side of the pump are cast with water-cooling chambers, allowing external cooling water to be connected for cooling when conveying high-temperature media.
The shaft end seal can be a packing seal, a mechanical seal, or a dry gas seal.
The sealed cavity is designed according to industry standards: optimizing cavity dimensions to enhance operational efficiency.
The sealed cavity can be equipped, according to engineering requirements, with various types of cartridge seals, bellows seals, tandem mechanical seals, or dry gas seals to meet demanding operating conditions.
The exterior of the sealed cavity is optionally equipped with a water-cooling jacket. The installation of a water-cooling jacket is required only when special requirements are specified, or when the temperature of the conveyed medium exceeds 66℃ if it’s water, or exceeds 150℃ if it’s a hydrocarbon. When the conveyed medium needs to be kept at a constant temperature, low-pressure steam or other heat-insulating media can also be passed through the jacket.
Bearing
Based on the pump’s performance parameters and structural requirements, four types of bearings were selected for the design:
1. Use radial ball bearings or roller bearings;
2. Sliding bearings;
3. Sliding bearings equipped with two sets of thrust ball bearings installed back-to-back;
4. Sliding bearings equipped with thrust sliding bearings, featuring forced lubrication by pressurized oil (patented technology), and equipped with an auxiliary lubrication system.
Coupling
Select the coupling specification and type based on the shaft seal structure and the pump’s shaft power.
1. Elastic pin coupling;
2. Elastomeric diaphragm-type extended coupling;
3. Toothed coupling.
Drive motor
Depending on the operational requirements, an electric motor or a steam turbine can be optionally selected for drive. When speed regulation is required, a variable-frequency motor or a speed-regulating coupling can be used.
Product Inquiry
Modern pump manufacturing enterprise
The company is eager to collaborate with users, foster friendships, and jointly advance our shared cause. Guided by technological innovation, we strive to ensure that our product quality consistently meets and exceeds customers’ ever-increasing demands. By leveraging advanced technologies, we aim to drive rapid enterprise growth and make an even greater contribution to the development of China’s pump industry.
Contact Us
Phone:+86-24-25350039
Phone:+86-24-25350035
Phone:+86-24-25350049
Email:qypump@qypump.com
Address: No. 328, Dongpinghu Street, Yuhong District, Shenyang City