CN103511346A - High-efficiency constant-pressure tangent fire pump - Google Patents

High-efficiency constant-pressure tangent fire pump Download PDF

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Publication number
CN103511346A
CN103511346A CN201210200225.2A CN201210200225A CN103511346A CN 103511346 A CN103511346 A CN 103511346A CN 201210200225 A CN201210200225 A CN 201210200225A CN 103511346 A CN103511346 A CN 103511346A
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CN
China
Prior art keywords
pump
impeller
pressure
efficiency
constant
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201210200225.2A
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Chinese (zh)
Inventor
田纯堂
张锡淼
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Liancheng Group Co Ltd
Original Assignee
Shanghai Liancheng Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai Liancheng Group Co Ltd filed Critical Shanghai Liancheng Group Co Ltd
Priority to CN201210200225.2A priority Critical patent/CN103511346A/en
Publication of CN103511346A publication Critical patent/CN103511346A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a high-efficiency constant-pressure tangent fire pump. The high-efficiency constant-pressure tangent fire pump comprises a pump body, a pump cover, an impeller, a water suction chamber, a pumping chamber and a diffusion pipe. The high-efficiency constant-pressure tangent fire pump is characterized in that the pumping chamber of the pump body is of a spiral pumping structure, and the spiral pumping chamber is provided with a separation tongue; the impeller is a rear-cover-plate semi-open type impeller with an impeller seal ring; the pump cover is provided with a seal ring. The high-efficiency constant-pressure tangent fire pump has the advantages that efficiency is obviously higher than that of a common constant-pressure fire pump, and the development requirement for high efficiency and energy saving is met; axial force is balanced effectively; mechanical seal bearing pressure is reduced; when the high-efficiency constant-pressure tangent fire pump is made into a vertical structure, a pump inlet and a pump outlet can be deigned to be on the same straight line, and therefore a pump set can be installed on a pipeline like valves.

Description

High efficiency constant-pressure tangent fire pumps
Technical field
The present invention relates to a kind of high efficiency constant-pressure tangent fire pumps.
Background technique
Constant pressure fire pump (tangent pump) distinguishing feature be flow-lift curve very smooth (within the scope of full flow lift change very little, superpressure not when small flow particularly), a pressure surge difficult problem greatly when solving fire supply flow in process and changing.Conventional constant pressure fire pump (tangent pump) is comprised of the pump housing, impeller, pump cover three major parts; Overcurrent part is comprised of suction chamber, impeller, pumping chamber, diffusing tube, sees accompanying drawing 1.The pump housing is that annular pumping chamber structure, impeller are that part back shroud open architecture, pump cover are without seal ring structure, unshrouded impeller rotates in annular pumping chamber, only have partially liq to enter diffusing tube by tangent direction, its shortcoming is as follows: 1, between impeller and pumping chamber, gap is larger, partially liq rotates in annular pumping chamber, loses larger; 2, unshrouded impeller is not owing to there is no cover plate, and gap loss is large; 3, there is hydraulic loss without seal ring in pump cover, and can not active balance axial force, and it is large that machine envelope is born pressure.Structural reason causes conventional constant pressure fire pump efficiency low, can not meet energy-efficient requirement.
Summary of the invention
The object of the invention is to solve the existing the problems referred to above of constant pressure fire pump in prior art (tangent pump), a kind of high efficiency constant pressure fire pump (tangent pump) is provided, the present invention designs a kind of high efficiency constant-pressure tangent fire pumps, comprise the pump housing, pump cover, impeller, suction chamber, pumping chamber, diffusing tube, casing wear ring, impeller ring, it is characterized in that: the pumping chamber of the pump housing is spirality setting-out structure, and spiral pressurized water chamber is provided with cut water; Impeller adopts back shroud half-opened impeller; Pump cover is band seal ring structure.Advantage of the present invention is to have efficiency apparently higher than the feature of conventional constant pressure fire pump, meets energy-efficient demand for development; Effectively balance axial force; Reduce machine envelope and born pressure; While regarding into vertical structure, pump is imported and exported and can be designed on same straight line, and pump group can be arranged on pipeline as valve sample.
Accompanying drawing explanation
Accompanying drawing 1 is existing conventional constant pressure fire pump (tangent pump) schematic diagram, Tu2Wei Tu1 side generalized section.
Accompanying drawing 3 is structural representation of the present invention, Tu4Wei Tu3 side generalized section.
Embodiment
Figure comprises: the pump housing 1, pump cover 2, impeller 3, suction chamber 4, pumping chamber 5, diffusing tube 6, casing wear ring 7, impeller ring 8, is characterized in that: the pumping chamber of the pump housing is spirality setting-out structure, and spiral pressurized water chamber is provided with cut water; Impeller adopts back shroud half-opened impeller; Pump cover is band seal ring structure.
Because the pump housing adopts spiral pressurized water chamber structure, spiral pressurized water chamber has cut water to cut off circulation, has reduced hydraulic loss, higher than annular pumping chamber efficiency; Impeller adopts back shroud half-opened impeller, and the existence due to cover plate, has reduced gap loss, higher than unshrouded impeller efficiency; Pump cover adopts band seal ring structure, reduces hydraulic loss, active balance axial force.
This Novel structure can be achieved as follows listed several benefit:
1, there is efficiency apparently higher than the feature of conventional constant pressure fire pump, meet energy-efficient demand for development;
2, effectively balance axial force;
3, reduce machine envelope and born pressure;
While 4, regarding into vertical structure, pump is imported and exported and can be designed on same straight line, and pump group can be arranged on pipeline as valve sample.

Claims (1)

1. a high efficiency constant-pressure tangent fire pumps, comprise the pump housing, pump cover, impeller, suction chamber, pumping chamber, diffusing tube, casing wear ring, impeller ring, it is characterized in that: the pumping chamber of the pump housing is spirality setting-out structure, and spiral pressurized water chamber is provided with cut water; Impeller adopts back shroud half-opened impeller band impeller ring; Pump cover is band seal ring structure.
CN201210200225.2A 2012-06-18 2012-06-18 High-efficiency constant-pressure tangent fire pump Pending CN103511346A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210200225.2A CN103511346A (en) 2012-06-18 2012-06-18 High-efficiency constant-pressure tangent fire pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210200225.2A CN103511346A (en) 2012-06-18 2012-06-18 High-efficiency constant-pressure tangent fire pump

Publications (1)

Publication Number Publication Date
CN103511346A true CN103511346A (en) 2014-01-15

Family

ID=49894607

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201210200225.2A Pending CN103511346A (en) 2012-06-18 2012-06-18 High-efficiency constant-pressure tangent fire pump

Country Status (1)

Country Link
CN (1) CN103511346A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104762533A (en) * 2015-05-03 2015-07-08 张金荣 Impeller-type fire pump
CN106086555A (en) * 2015-04-24 2016-11-09 陈思 A kind of oil transfer pump

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106086555A (en) * 2015-04-24 2016-11-09 陈思 A kind of oil transfer pump
CN104762533A (en) * 2015-05-03 2015-07-08 张金荣 Impeller-type fire pump

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RJ01 Rejection of invention patent application after publication

Application publication date: 20140115

RJ01 Rejection of invention patent application after publication