CN204239281U - A kind of high-lift multi-stage centrifugal pump water supply installation - Google Patents

A kind of high-lift multi-stage centrifugal pump water supply installation Download PDF

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Publication number
CN204239281U
CN204239281U CN201420586323.9U CN201420586323U CN204239281U CN 204239281 U CN204239281 U CN 204239281U CN 201420586323 U CN201420586323 U CN 201420586323U CN 204239281 U CN204239281 U CN 204239281U
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CN
China
Prior art keywords
pump
centrifugal pump
water
outlet pipe
exhaust duct
Prior art date
Application number
CN201420586323.9U
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Chinese (zh)
Inventor
翁中军
吴宝根
万胜
陈跃林
Original Assignee
南京梅山冶金发展有限公司
上海梅山钢铁股份有限公司
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Priority to CN201420586323.9U priority Critical patent/CN204239281U/en
Application granted granted Critical
Publication of CN204239281U publication Critical patent/CN204239281U/en

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Abstract

The utility model discloses a kind of high-lift multi-stage centrifugal pump water supply installation to be made up of centrifugal pump, submersible pump, outlet pipe and exhaust duct, the water intake of described centrifugal pump is connected with submersible pump by intake pipe, the water outlet of centrifugal pump is provided with outlet pipe, and described outlet pipe is provided with large gate valve; Described exhaust duct is installed on the outlet pipe between centrifugal pump waterexit end and large gate valve, and exhaust duct is provided with control valve.The utility model utilizes submersible pump to centrifugal pump body water filling, air in compressing centrifugal pump body is discharged along exhaust duct, ensure that in the pump housing, liquid can be full of completely, eliminate " aeroembolism " phenomenon, make starting mode of pump normally go up water and obtain reliable guarantee, solve the Pressure Drop that centrifugal pump causes because of suction simultaneously, the pressure ratio self-priming being transported to impeller eye will be exceeded, thus away from cavitation of pump formation condition, avoid the infringement of cavitation phenomenon to water pump.

Description

A kind of high-lift multi-stage centrifugal pump water supply installation

Technical field

The utility model relate to mine down-hole drainage equipment field, has particularly related to a kind of high-lift multi-stage centrifugal pump water supply installation.

Background technique

Current iron ore down-hole raw ore promotes used industrial water and pit shaft infiltration trickling in operation and arrives-537 horizontal pump storehouses, pump storehouse stores Man Houxu and is pumped among the ditch of-420 main haulage roadways timely, net head reaches 117 meters, and lift is high, pipeline length is the technical difficult problem can't steer clear of.

Air in the high-lift centrifugal pump pump housing causes centrifugal pump to start normally can not go up water, and centrifugal pump produces cavitation phenomenons and causes the infringement of impeller and pump case and centrifugal pump working efficiency to promote.Centrifugal pump needs to fill water by the pump housing before starting, object is got rid of by air wherein, generally be used in intake pipe and pump head is poured water or use vacuum pump to take out the methods such as pump housing vacuum dehydration carries out water filling, but the air in the pump housing can not all be got rid of by these water-filling methods completely, always has residual gas, gas due to quality light, do not produce enough centrifugal force, be difficult to maybe cannot enter next stage, thus generate " aeroembolism " phenomenon, cause centrifugal pump not dally water.During centrifugal pump work, suction water hydraulic power is damaged because of pipe and the reason of centrifugal pump setting height(from bottom) declines along pump intake to impeller eye, when pressure near impeller blade entrance is less than the saturated vapor pressure at Liquid transfer temperature, water liquid is vaporization just, simultaneously, make the gas effusion be dissolved in water liquid, produce cavitation phenomenon, infringement centrifugal pump.Water liquid sucks because pipe damage and pump setting height(from bottom) pressure can progressively decline, and in like manner, sucks the water yield and also can reduce, make centrifugal pump real work efficiency not reach the working efficiency of setting.Therefore, the problem that centrifugal pump difficulty starts and efficiency cannot promote is solved very urgent.

Summary of the invention

For the deficiency that prior art exists, the purpose of this utility model just there are provided a kind of high-lift multi-stage centrifugal pump water supply installation, solves the problem that centrifugal pump difficulty starts and efficiency cannot promote.

To achieve these goals, the technical solution adopted in the utility model is such: a kind of high-lift multi-stage centrifugal pump water supply installation, be made up of centrifugal pump, submersible pump, outlet pipe and exhaust duct, the water intake of described centrifugal pump is connected with submersible pump by intake pipe, the water outlet of centrifugal pump is provided with outlet pipe, and described outlet pipe is provided with large gate valve; Described exhaust duct is installed on the outlet pipe between centrifugal pump waterexit end and large gate valve, and exhaust duct is provided with control valve.

As a kind of preferred version, described outlet pipe is also provided with safety check, described safety check is fixedly installed in large gate valve one end away from centrifugal pump.

Compared with prior art, the beneficial effects of the utility model:

1. installed exhaust duct, forced the air in the pump housing to be got rid of by exhaust duct, ensured that the pump housing is full of water completely, eliminate " aeroembolism " phenomenon, ensureing that centrifugal pump starts can top water;

2. supplied water by submersible pump and ensure that the pressure of centrifugal pump impeller entrance is away from centrifugal pump " cavitation erosion " formation condition, avoid " cavitation erosion " phenomenon to the infringement of centrifugal pump;

3. ensure that the intake of centrifugal pump water liquid, improve the working efficiency of centrifugal pump.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

Embodiment

Below in conjunction with the drawings and specific embodiments, the utility model is further described.

Embodiment:

As shown in Figure 1, a kind of high-lift multi-stage centrifugal pump water supply installation, be made up of centrifugal pump 1, submersible pump 2, outlet pipe 3 and exhaust duct 4, the water intake of described centrifugal pump 1 is connected with submersible pump 2 by intake pipe 5, the water outlet of centrifugal pump 1 is provided with outlet pipe 3, and described outlet pipe 3 is provided with large gate valve 6; Described exhaust duct 4 is installed on the outlet pipe 3 between centrifugal pump 1 waterexit end and large gate valve 6, and exhaust duct is provided with control valve 7; Described safety check 8 is fixedly installed in large gate valve 6 one end away from centrifugal pump 1.During concrete enforcement, described submersible pump 2 lift reaches more than 9 meters, flow is slightly larger than centrifugal pump 1, submersible pump 2 is put into wet pit 9, centrifugal pump 1 before activation, first open control valve 7, open submersible pump 2 again, submersible pump 2 can be rapidly to the water filling of centrifugal pump 1 pump housing, in centrifugal pump 1 pump housing, original air can under the extruding of submersible pump 2, exhaust duct 4 above water outlet is discharged, when exhaust duct 4 has continuously current to flow out, illustrate in centrifugal pump 1 pump housing and be full of water liquid completely, " aeroembolism " phenomenon is avoided to occur completely, now, open centrifugal pump 1, centrifugal pump 1 is necessarily reliable, go up water fast, after upper water, in order to not cause flow loss, want closed control valve 7, when after the end of job, first close the power supply of submersible pump 2, opening controlling valve 7 pressure release again, finally stop submersible pump 2.When centrifugal pump 1 works, water liquid sucks, because there has been this power source of submersible pump 2, pipe in suction damages substantially negligible, nearly 5 meters of the original suction height of centrifugal pump 1 also can see 0 meter as substantially, that is, pressure from suction port to impeller eye is consistent, and under the promotion of submersible pump 2, the pressure that pressure ratio produces by centrifugal pump 1 self-priming completely wants high, away from the condition forming the generation of " cavitation erosion " phenomenon, avoid " cavitation erosion " phenomenon to the infringement of water pump, thus the water yield sucked obtains Reliable guarantee, the real work efficiency of centrifugal pump 1 is improved.

Finally it should be noted that, above embodiment is only in order to illustrate the technical solution of the utility model and non-limiting technological scheme, those of ordinary skill in the art is to be understood that, those are modified to the technical solution of the utility model or equivalent replacement, and do not depart from aim and the scope of the technical program, all should be encompassed in the middle of right of the present utility model.

Claims (2)

1. a high-lift multi-stage centrifugal pump water supply installation, it is characterized in that: described water supply installation is made up of centrifugal pump, submersible pump, outlet pipe and exhaust duct, the water intake of described centrifugal pump is connected with submersible pump by intake pipe, the water outlet of centrifugal pump is provided with outlet pipe, and described outlet pipe is provided with large gate valve; Described exhaust duct is installed on the outlet pipe between centrifugal pump waterexit end and large gate valve, and exhaust duct is provided with control valve.
2. a kind of high-lift multi-stage centrifugal pump water supply installation according to claim 1, is characterized in that: described outlet pipe is also provided with safety check, and described safety check is fixedly installed in large gate valve one end away from centrifugal pump.
CN201420586323.9U 2014-10-11 2014-10-11 A kind of high-lift multi-stage centrifugal pump water supply installation CN204239281U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420586323.9U CN204239281U (en) 2014-10-11 2014-10-11 A kind of high-lift multi-stage centrifugal pump water supply installation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420586323.9U CN204239281U (en) 2014-10-11 2014-10-11 A kind of high-lift multi-stage centrifugal pump water supply installation

Publications (1)

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CN204239281U true CN204239281U (en) 2015-04-01

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104929949A (en) * 2015-06-04 2015-09-23 马钢(集团)控股有限公司 Evacuating device for centrifugal drainage pump and evacuating method
CN104976134A (en) * 2015-06-30 2015-10-14 重庆迈拓生态农业发展有限公司 Fluid elevation pumping device
CN106894465A (en) * 2015-12-17 2017-06-27 青岛海尔滚筒洗衣机有限公司 A kind of domestic wastewater reutilization system and method for reutilizing wastewater
CN107034952A (en) * 2016-02-03 2017-08-11 青岛海尔滚筒洗衣机有限公司 A kind of domestic wastewater reutilization system and method for reutilizing wastewater
CN107724471A (en) * 2016-08-12 2018-02-23 青岛海尔滚筒洗衣机有限公司 A kind of washing machine wastewater reutilization system and method for reutilizing wastewater

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104929949A (en) * 2015-06-04 2015-09-23 马钢(集团)控股有限公司 Evacuating device for centrifugal drainage pump and evacuating method
CN104976134A (en) * 2015-06-30 2015-10-14 重庆迈拓生态农业发展有限公司 Fluid elevation pumping device
CN106894465A (en) * 2015-12-17 2017-06-27 青岛海尔滚筒洗衣机有限公司 A kind of domestic wastewater reutilization system and method for reutilizing wastewater
CN106894465B (en) * 2015-12-17 2020-08-14 青岛海尔滚筒洗衣机有限公司 Household wastewater recycling system and wastewater recycling method
CN107034952A (en) * 2016-02-03 2017-08-11 青岛海尔滚筒洗衣机有限公司 A kind of domestic wastewater reutilization system and method for reutilizing wastewater
CN107724471A (en) * 2016-08-12 2018-02-23 青岛海尔滚筒洗衣机有限公司 A kind of washing machine wastewater reutilization system and method for reutilizing wastewater

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