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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.
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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.
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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.
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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.
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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.
QNLP(D) Condensate Pump
Operating temperature (T): Ambient temperature to 90℃ (special requirements can reach up to 120℃)
Head (H): 48–360 m
Keywords:
Category:
- Product Description
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Overview:
The condensate pump is a standard series product that integrates advanced manufacturing technologies from both domestic and international sources, incorporates improvements tailored to the specific technical characteristics of China’s power generation units, and enhances efficiency and cavitation resistance. It features high efficiency, convenient maintenance and operation, reliable performance, and significant energy savings. This pump is specifically designed for condensate systems in power generation units ranging from 25 MW to 600 MW. It can also be used in petrochemical processes where NPSH or installation space constraints limit the choice of pumps, provided the medium being conveyed has physicochemical properties similar to water.
Performance range:
Flow rate Q = 85–1940 m³/h
Head H = 48–360 m
Temperature T: Normal temperature to 90℃ (special requirements can reach 120℃)
Model meaning:
QNL(P)(D)(S)1100-290
Q—Corporate Identity
NL—Vertical Condensate Pump
(P)—The axial thrust of the pump is borne by the pump body itself; the motor does not bear any axial thrust from the pump.
When there is no "(P)" marking, the axial thrust is entirely borne by the motor.
(D)—The pump’s guide vanes adopt a radial-type design.
When there is no "(D)" marking, the guide vanes shall be spatial guide vanes.
(S)—The pump’s first-stage impeller features a double-suction design.
When there is no "(S)" marking, the impeller at the first stage has a single-suction design.
1100—Rated flow is 1100 m³/h
290 — Rated head is 290 m
Structural features:
The QNL(P)(D)(S) series pumps feature a vertical multistage canister-type design, and the pump casing is designed for full vacuum operation. Based on performance parameters, six structural types have been developed:
1. QNL type: The stages are connected by diffuser casings. The impeller of the first stage features a single-suction closed design and is equipped with an inducer according to operational requirements, thereby enhancing its cavitation resistance.
2. QNLP type: The stages are connected by diffuser casings. The impeller of the first stage features a single-suction closed design and is equipped with an inducer as required by the operating conditions, thereby enhancing its cavitation resistance. The axial thrust of the pump is borne by the pump body itself; the motor does not bear any axial thrust from the pump.
3. QNLS type: The stages are connected by guide casings. The impeller of the first stage features a double-suction design and is equipped with a dual-helix volute casing to enhance cavitation resistance.
4. The QNLPS model features flow-directing casings connecting the stages. The impeller of the first stage adopts a double-suction design and is equipped with a dual-helical volute diffuser chamber, enhancing its resistance to cavitation. The axial thrust of the pump is borne by the pump body itself; the motor does not experience any axial thrust from the pump.
5. The QNLD model features radial guide vanes and uses intermediate sections to connect the stages. The impeller of the first stage has a double-suction design. All axial thrust of the pump is borne by the motor.
6. The QNLPD model features radial guide vanes and uses intermediate sections to connect the stages. The impeller of the first stage has a double-suction design, and its pressure chamber adopts a double-helix volute structure. The hydraulic model is optimally designed to automatically balance the axial forces within the impeller, offering a wide range of high-efficiency operation and excellent cavitation resistance. The axial thrust of the pump is borne by the pump body itself; the motor does not experience any axial thrust from the pump.
The pump’s suction and discharge ports are located respectively on the pump casing and the discharge seat, and these two ports can be repositioned at multiple angles, such as 180° or 90°. The pump is equipped with several water-lubricated bearings that serve to support the radial forces acting on the rotor.
There are two structural types for balancing the axial thrust of a pump:
The first type: All axial forces are borne by the thrust bearing inside the motor.
Second type: The axial thrust of the pump is borne by the pump body itself, and the motor does not bear any axial thrust from the pump. The thrust bearing housing utilizes our proprietary patented technology, which offers energy savings and convenient maintenance.
The shaft end seal is designed, according to engineering requirements, to employ either a packing seal or a mechanical seal.
The mechanical seal employs our proprietary patented technology, featuring a modular, double-face, balanced design that is easy to assemble and disassemble. A replaceable shaft sleeve is installed at the shaft seal area to protect the pump shaft.
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