Vertical barrel pocket type extraction pump

A condensate pump and vertical cylinder technology, applied in the field of water pumps, can solve the problems of increasing hydraulic loss and volume loss, disturbing the flow state of the impeller inlet, and the overall cantilever length of the pump, so as to reduce hydraulic loss and volume loss, and improve anti-cavitation. Excellent performance and hydraulic performance

Inactive Publication Date: 2008-07-23
利欧集团湖南泵业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The barrel-type condensate pump with this structure has the following defects: because the inducer is set in front of the first-stage impeller, the cantilever is long, and the running stability is poor. mm, requires high installation accuracy
The impellers at all levels are equipped with balance holes, which disturb the flow state of the impeller inlet, increase the hydraulic loss and volume loss, and reduce the efficiency of ...

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  • Vertical barrel pocket type extraction pump
  • Vertical barrel pocket type extraction pump
  • Vertical barrel pocket type extraction pump

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0020] Referring to Fig. 1, Fig. 3, Fig. 4 and Fig. 5, the first-stage impeller is a double-suction impeller 2, the impeller 4 is a closed structure, the guide vane is a radial guide vane 5, and the radial guide vane 5 is installed in the middle section 6 A balance drum 8 integrated with the upper shaft sleeve 10 is installed on the upper main shaft 11, and a balance drum sleeve 7 with a narrow gap between the balance drum 8 and the balance drum 8 is installed on the inner cylinder 21. The cavity communicates with the outer cylinder 1 through the balance pipe 12, and the deflector 19 and the deflector cone 20 are installed on the bottom of the outer cylinder 1 corresponding to the double-suction impeller 2. set screw 14.

[0021] Referring to FIG. 1 , the first-stage impeller is a double-suction impeller 2 installed on the lower main shaft 3 ....

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Abstract

The invention discloses a vertical bag type condensate pump, which is characterized in that a first stage impeller is a double suction impeller (2); the impeller (4) is closed; a radial guide vane (5) is positioned in an middle section (6); a balance drum (8) integrated with an upper shaft sleeve (10) is positioned on an upper main shaft (11); a balance drum sleeve (7) is positioned in an inner tube body (21); a narrow gap is formed between the balance drum (8) and the balance drum sleeve (7); a cavity above the balance drum (8) is communicated with an outer tube body (1) by a balance pipe (12); a guiding sheet (19) and a diversion cone (20) are positioned at the bottom part of the outer tube body (1), corresponding to the double suction impeller. The vertical bag type condensate pump has the advantages of compact structure, high efficiency, smooth operation, excellent anti-cavitation performance, and strong practicality and popularization value.

Description

technical field [0001] The invention relates to a water pump, in particular to a vertical barrel-type condensate pump. Background technique [0002] The vertical barrel-type condensate pump is used for pumping condensate in the power plant. Its suction side is highly vacuumed, and it is prone to cavitation and air inhalation. The requirements for the anti-cavitation of the pump are particularly high, and the head is as high as 150-350m. In the traditional structure, an inducer (15) is installed in front of the first-stage impeller to improve the anti-cavitation performance of the pump, and an impeller (16) with a balance hole and a decompression sleeve (18) are used to balance part of the axial force. The leaf body (17) is a space guide vane. The barrel-type condensate pump with this structure has the following defects: because the inducer is set in front of the first-stage impeller, the cantilever is long, and the running stability is poor. mm, which requires high install...

Claims

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Application Information

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IPC IPC(8): F04D29/24F04D29/044F04D29/00
Inventor 潘新建邓昌春叶丹映
Owner 利欧集团湖南泵业有限公司
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