CN104612982A - Dry pumping prevention and burning prevention automatic protection device and method for mine stainless steel multistage pump - Google Patents

Dry pumping prevention and burning prevention automatic protection device and method for mine stainless steel multistage pump Download PDF

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Publication number
CN104612982A
CN104612982A CN201510027711.2A CN201510027711A CN104612982A CN 104612982 A CN104612982 A CN 104612982A CN 201510027711 A CN201510027711 A CN 201510027711A CN 104612982 A CN104612982 A CN 104612982A
Authority
CN
China
Prior art keywords
water
vacuum tank
pump
water pump
valve
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
CN201510027711.2A
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Chinese (zh)
Inventor
张银辉
任智勇
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.)
HUNAN SHANYUAN'AN AUTOMATIC CONTROL SYSTEM Co Ltd
Original Assignee
HUNAN SHANYUAN'AN AUTOMATIC CONTROL SYSTEM 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 HUNAN SHANYUAN'AN AUTOMATIC CONTROL SYSTEM Co Ltd filed Critical HUNAN SHANYUAN'AN AUTOMATIC CONTROL SYSTEM Co Ltd
Priority to CN201510027711.2A priority Critical patent/CN104612982A/en
Publication of CN104612982A publication Critical patent/CN104612982A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/02Stopping of pumps, or operating valves, on occurrence of unwanted conditions
    • F04D15/0209Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid
    • F04D15/0218Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid the condition being a liquid level or a lack of liquid supply
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/66Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/669Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D9/00Priming; Preventing vapour lock
    • F04D9/04Priming; Preventing vapour lock using priming pumps; using booster pumps to prevent vapour-lock
    • F04D9/06Priming; Preventing vapour lock using priming pumps; using booster pumps to prevent vapour-lock of jet type
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F16/00Drainage

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Jet Pumps And Other Pumps (AREA)

Abstract

The invention discloses a dry pumping prevention and burning prevention automatic protection device and method for a mine stainless steel multistage pump. The automatic protection device comprises an automatic controller, a vacuum tank, a liquid level meter, a diversion valve, a water pump exhaust valve, a jet device, a jet source valve, a water bin water lever meter and a motor control cabinet. By means of the dry pumping prevention and burning prevention automatic protection device and method for the mine stainless steel multistage pump, the advantages of the vacuum tank diversion method and the jet diversion method are combined; meanwhile, the safety of the multistage pump is ensured through a water mode and an electricity mode; the water pump exhaust unit is arranged, and therefore air in a cavity of the water pump can be exhausted when vacuum water supplementation is conducted, and the water pump can be prevented from cavitation corrosion.

Description

The anti-dry tap of a kind of mine stainless steel multistage pump prevents the automatic safety device burnt to death and method
Technical field
The invention belongs to mine down-hole technical field of drainage, be specifically related to the anti-dry tap of a kind of mine stainless steel multistage pump, the anti-automatic safety device burnt to death and method.
Background technique
Mine stainless steel multistage pump is under the applicable cases of water source lower than water pump; all need to carry out diversion before starting water pump; fill in pump chamber by water; can start water pump carries out to, draining; and cannot effectively detect the degree of vacuum of water pump and protect in water pump operation process, to water pump because degree of vacuum is inadequate and water bunker level causes not dry tap, the phenomenon burnt to death cannot be protected.
The diversion mode of current domestic employing mainly contains three kinds: vacuum tank diversion, jet diversion, vacuum pump diversion.
Vacuum tank diversion needs according to air leakage, and artificially carrying out moisturizing aperiodically can normally use, and cannot accomplish the automatic control of drainage means and the protection to water pump dry tap state.
Although jet diversion and vacuum pump diversion can control automatically; but it is inaccurate often for the judgement (namely whether water is full of pump chamber) of diversion effect; need to pass through manual observation; and the gas leakage occurred in for water pump operation process, the seriously phenomenon such as to leak cannot detect, cannot to water pump dry tap, burn to death and make protection.
Domestic not for the anti-dry tap of mine stainless steel multistage pump, the device burnt to death at present.
So, for low water source automatically give, drainage system application for, a kind of automatic safety device of special needs, can either accurately judge water pump diversion effect online, accurately can also make dry tap according to actual conditions to water pump, burn to death before protection, protected effect is: (1) carries out moisturizing to vacuum tank automatically, ensures pump vacuum degree, prevents water pump dry tap, burns to death; (2) when water pump or pipeline seriously leak, when the automatic makeup water yield has been not enough to ensure vacuum tank liquid level, autostop, has prevented water pump dry tap, has burnt to death; (3) when water bunker level is lower than pump sump mouth, autostop, prevents water pump dry tap, burns to death.
Summary of the invention
For existing defect; the invention provides the anti-dry tap of a kind of mine stainless steel multistage pump, the anti-automatic safety device burnt to death and method; the present invention is the advantage combining vacuum tank diversion and jet diversion two kinds of diversion modes, introduces a kind of anti-dry tap formed the automatic monitoring of vacuum tank water level, the anti-automatic safety device burnt to death and method simultaneously.
Technological scheme of the present invention is as follows:
The anti-dry tap of mine stainless steel multistage pump, the anti-automatic safety device burnt to death, comprise automatic controller, vacuum tank, level meter, diversion valve, water pump outlet valve, liquid jetting device, jet source valve, water bunker level take into account motor controlling cabinet;
Described vacuum tank bottom is provided with pump sump mouth, and top is provided with pump mouth, and water pump is connected with the pump sump mouth of vacuum tank by water pump suction pipe, and vacuum tank pump mouth connects intake pipe, and intake pipe stretches into sump inside;
Between vacuum tank and sump, be provided with aqueduct and liquid jetting device, be provided with diversion valve in the middle of aqueduct, liquid jetting device is connected with jet source by jet source valve;
Between water pump and vacuum tank, be provided with water pump outlet pipe, water pump outlet pipe is connected with the upper end of vacuum tank, is provided with water pump outlet valve in the middle of water pump outlet pipe;
The connection mouth of water pump outlet pipe and vacuum tank is higher than vacuum tank pump mouth;
Preferably, described jet source is the high-pressure water of pump drain pipe;
Level detection sensor is installed at described vacuum tank top, and sump top is provided with water-level gauge, and automatic controller is electrically connected with level detection sensor and water bunker level meter respectively;
When the water level in vacuum tank being detected lower than moisturizing water level settings value, automatic controller opens jet source valve, diversion valve and water pump outlet valve successively, moisturizing is carried out to vacuum tank, vacuum tube water level is increased, ensure that vacuum tank water level is higher than pump sump saliva position, the generation prevent water pump dry tap, burning to death;
When carrying out moisturizing to vacuum tank, if vacuum tank water level does not rise, then automatic controller controls motor controlling cabinet, disable motor, the generation prevent water pump dry tap, burning to death;
If water bunker level meter detects that water bunker level is lower than critical value, then automatic controller controls motor controlling cabinet, disable motor, the generation prevent water pump dry tap, burning to death;
Preferably, described vacuum tank is cylindrical;
Preferably, bottom described vacuum tank, blowdown access opening is provided with.
The anti-dry tap of a kind of mine stainless steel multistage pump of the present invention, the anti-automatic protecting method burnt to death, comprise following operating procedure:
Detect the step of water level in vacuum tank, when water level in vacuum tank is lower than moisturizing water level settings value,
Open the step of jet source valve;
Open the step of diversion valve;
Open the step of water pump outlet valve;
When water level in vacuum tank rises, continue to add water to moisturizing water level settings value, the outlet valve that switches off the pump successively afterwards, diversion valve, jet source valve;
When in vacuum tank, water level does not rise, then disable motor;
When water bunker level is lower than critical value, disable motor;
The anti-dry tap of mine stainless steel multistage pump of the present invention, the anti-automatic safety device burnt to death and method; combine the advantage of vacuum tank diversion and jet diversion two kinds of diversion modes; ensured the safety of multistage pump by water, electric various ways simultaneously; and be provided with water pump exhaust unit; can when vacuum feed; air in pump chamber is discharged, avoids causing cavitation of pump.
Accompanying drawing explanation
Fig. 1 is structural representation figure of the present invention,
Fig. 2 is electrical structure diagram of the present invention
Fig. 3 is the structural drawing of automatic controller of the present invention
Fig. 4 is control flow chart of the present invention
Description of reference numerals: 101. waste pipes, 102. water pumps, 103. water pump outlet pipes, 104. water pump suction pipes, 105. water pump outlet valves, 106. level meters, 107. vacuum tanks, 108. diversion valves, 109. aqueducts, 110. jet source valves, 111. liquid jetting devices, 112. intake pipes, 113. blowdown access openings, 116. motors, 117. water bunker level meters, 118. sump, 202. automatic controllers, 204. motor controlling cabinets
Embodiment
Below in conjunction with accompanying drawing, embodiments of the present invention is described in detail:
As shown in Figure 1, the anti-dry tap of mine stainless steel multistage pump of the present invention, the anti-automatic safety device burnt to death, comprise vacuum tank 107, level meter 106, diversion valve 108, water pump outlet valve 105, liquid jetting device 111, jet source valve 110, automatic controller 202, motor 116, water bunker level meter 117, sump 118, motor controlling cabinet 204;
Described vacuum tank 107 bottom is provided with pump sump mouth, and top is provided with pump mouth, and water pump is connected with the pump sump mouth of vacuum tank by water pump suction pipe 104, and pump mouth is connected with intake pipe 112, and it is inner that described intake pipe 112 stretches into sump 117;
Between vacuum tank 107 and sump, be provided with aqueduct 109 and liquid jetting device 111, be provided with diversion valve 108 in the middle of aqueduct 109, liquid jetting device 111 is connected with jet source by jet source valve 110;
Between water pump 102 and vacuum tank 107, be provided with water pump outlet pipe 103, water pump outlet pipe 103 is connected with the upper end of vacuum tank 107, is provided with water pump outlet valve 105 in the middle of water pump outlet pipe 103,
Directly introduce the jet source of high pressure water as liquid jetting device from water pump main drainpipe 101;
State vacuum tank 107 top and install level detection sensor, sump 118 top is provided with water-level gauge 117, and automatic controller 202 is electrically connected with level detection sensor 106 and water bunker level meter 117 respectively;
When the water level in vacuum tank being detected lower than moisturizing water level settings value, automatic controller opens jet source valve 110, diversion valve 108 and water pump outlet valve 105 successively, moisturizing is carried out to vacuum tank, vacuum tube water level is increased, ensure that vacuum tank water level is higher than pump sump saliva position, the generation prevent water pump dry tap, burning to death;
When carrying out moisturizing to vacuum tank, if vacuum tank water level does not rise, then automatic controller controls motor controlling cabinet 204, disable motor, the generation prevent water pump dry tap, burning to death;
If water bunker level meter detects that water bunker level is lower than critical value, then automatic controller controls motor controlling cabinet, disable motor, the generation prevent water pump dry tap, burning to death;
Vacuum tank 107 is special cylindrical; Blowdown access opening 113 is provided with bottom vacuum tank 107;
After mine stainless steel multistage pump runs, vacuum tank 107 can be full of water, but because the reasons such as pipeline reason or water pump itself leak can cause the water level of vacuum tank 107 more and more lower in water pump operation process, in order to prevent this water level lower than the height of suction sleeve 104 at vacuum tank 107, now open jet source electric ball valve, jet source can be high pressure water in main drainpipe or other high-pressure water, also can be pressurized air.Then diversion electric ball valve and exhaust electric ball valve is opened, jet source produces jet effect by liquid jetting device, produce negative pressure at diversion electric ball valve place pipeline, water will be sucked vacuum tank by vacuum tank intake pipe by the water in sump by barometric pressure, reaches the effect of moisturizing;
Regularly can open the blowdown valve bottom vacuum tank 107, to clear up the silt and other impurity that long-time running postprecipitation gets off.
Water feeding of water pump pipeline is installed on vacuum tank bottom, and vacuum tank water intake is a little less than water pump outlet pipe, and when vacuum tank water level is higher than vacuum tank water intake, the required journey of inhaling of starting mode of pump reduces.
Fig. 2 is the electrical structure diagram of patent of the present invention, automatic controller (202) can receive the analog amount water level signal of water bunker level meter, level meter, carry out automatic water-leading according to pre-set programs control jet source electric ball valve, diversion electric ball valve and exhaust electric ball valve, reach moisturizing effect; Or send out code to draining electric gate valve control box, then send halt instruction to motor starting cabinet, stop water pump operation in time, prevent water pump dry tap or burn to death.
Fig. 3 is the structural drawing of the automatic controller of patent of the present invention.Control core is Siemens S7-300 series Programmable logic Controller (PLC), comprises CPU (313), Analog input mModule (310), switching input module (311), switching value output module (312).Wherein, Analog input mModule (310) access water-level gauge (301) and level meter (302), input signal is 4-20mA.The open and close of switching input module (311) access electric gate valve put in place the overload signal (304) of signal (303) and electric gate valve.Switching value output module (312) controls electric motor starting cabinet (305), electric gate valve (306), jet source valve (307), diversion valve (308), water pump outlet valve (309) and audible-visual annunciator (315) by relay unit (314).Automatic controller (317) panel configuration touch screen human-computer interface (316), can be set systematic parameters such as water bunker level, vacuum tank water levels, also can be shown the running state of whole device by graphical interfaces.
More than to invention has been exemplary description; obvious realization of the present invention is not subject to the restrictions described above; as long as have employed the various improvement that technical solution of the present invention is carried out; or design of the present invention and technological scheme directly applied to other occasion, all in protection scope of the present invention without to improve.

Claims (4)

1. the anti-dry tap of mine stainless steel multistage pump, the anti-automatic safety device burnt to death, is characterized in that, comprises automatic controller, vacuum tank, level meter, diversion valve, water pump outlet valve, liquid jetting device, jet source valve, water bunker level take into account motor controlling cabinet;
Described vacuum tank bottom is provided with pump sump mouth, and top is provided with pump mouth, and water pump is connected with the pump sump mouth of vacuum tank by water pump suction pipe, and vacuum tank pump mouth connects intake pipe, and intake pipe stretches into sump inside;
Between vacuum tank and sump, be provided with aqueduct and liquid jetting device, be provided with diversion valve in the middle of aqueduct, liquid jetting device is connected with jet source by jet source valve;
Between water pump and vacuum tank, be provided with water pump outlet pipe, water pump outlet pipe is connected with the upper end of vacuum tank, is provided with water pump outlet valve in the middle of water pump outlet pipe;
The connection mouth of water pump outlet pipe and vacuum tank is higher than vacuum tank pump mouth;
Described jet source is the high-pressure water of pump drain pipe;
Level detection sensor is installed at described vacuum tank top, and sump top is provided with water-level gauge, and automatic controller is electrically connected with level detection sensor and water bunker level meter respectively.
2. the anti-dry tap of a kind of mine stainless steel multistage pump according to claim 1, the anti-automatic safety device burnt to death, it is characterized in that, described vacuum tank is cylindrical.
3. the anti-dry tap of a kind of mine stainless steel multistage pump according to claim 1, the anti-automatic safety device burnt to death, is characterized in that, be provided with blowdown access opening bottom described vacuum tank.
4. the anti-dry tap of mine stainless steel multistage pump, the anti-automatic protecting method burnt to death, is characterized in that, comprise the following steps:
Detect the step of water level in vacuum tank, when water level in vacuum tank is lower than moisturizing water level settings value,
Open the step of jet source valve;
Open the step of diversion valve;
Open the step of water pump outlet valve;
When water level in vacuum tank rises, continue to add water to moisturizing water level settings value, the outlet valve that switches off the pump successively afterwards, diversion valve, jet source valve;
When in vacuum tank, water level does not rise, then disable motor;
When water bunker level is lower than critical value, disable motor.
CN201510027711.2A 2015-01-20 2015-01-20 Dry pumping prevention and burning prevention automatic protection device and method for mine stainless steel multistage pump Pending CN104612982A (en)

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Application Number Priority Date Filing Date Title
CN201510027711.2A CN104612982A (en) 2015-01-20 2015-01-20 Dry pumping prevention and burning prevention automatic protection device and method for mine stainless steel multistage pump

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Application Number Priority Date Filing Date Title
CN201510027711.2A CN104612982A (en) 2015-01-20 2015-01-20 Dry pumping prevention and burning prevention automatic protection device and method for mine stainless steel multistage pump

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Publication Number Publication Date
CN104612982A true CN104612982A (en) 2015-05-13

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109340133A (en) * 2018-12-06 2019-02-15 无锡市海星船舶动力有限公司 With the centrifugal water pump for automatically controlling anti-dry tap function
CN114893449A (en) * 2022-05-26 2022-08-12 淮南同正科技有限公司 Applicable to the cavitation elimination device and system for water-free water pump without bottom valve in coal mine

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1113636A (en) * 1997-06-20 1999-01-19 Takasago Thermal Eng Co Ltd Pumping device
JP2003065276A (en) * 2001-08-24 2003-03-05 Sumitomo Metal Mining Co Ltd Self-contained pump
CN2641335Y (en) * 2003-07-31 2004-09-15 王伐帝 Automatic water compensation type vacuum water drawing tank
CN1862024A (en) * 2006-06-06 2006-11-15 南昌大学 Electric controlled vacuum water drawing device
CN201779035U (en) * 2010-09-18 2011-03-30 北京倍杰特国际环境技术有限公司 Automatic water diversion device for water pump
CN202228409U (en) * 2011-10-09 2012-05-23 常州寅盛药业有限公司 Blank-run prevention device for centrifugal pump
CN203129311U (en) * 2013-03-30 2013-08-14 国家电网公司 Intelligent vacuum draining device
CN203500090U (en) * 2013-09-27 2014-03-26 山西晋丰煤化工有限责任公司 Auxiliary start device of circulating water pump
CN104595199A (en) * 2014-12-03 2015-05-06 广州市昌宁机电设备有限公司 Vacuum water diversion device capable of automatically supplementing water
CN204419605U (en) * 2015-01-20 2015-06-24 湖南山源安自控系统有限公司 The anti-dry tap of a kind of mine stainless steel multistage pump prevents the automatic safety device burnt to death

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1113636A (en) * 1997-06-20 1999-01-19 Takasago Thermal Eng Co Ltd Pumping device
JP2003065276A (en) * 2001-08-24 2003-03-05 Sumitomo Metal Mining Co Ltd Self-contained pump
CN2641335Y (en) * 2003-07-31 2004-09-15 王伐帝 Automatic water compensation type vacuum water drawing tank
CN1862024A (en) * 2006-06-06 2006-11-15 南昌大学 Electric controlled vacuum water drawing device
CN201779035U (en) * 2010-09-18 2011-03-30 北京倍杰特国际环境技术有限公司 Automatic water diversion device for water pump
CN202228409U (en) * 2011-10-09 2012-05-23 常州寅盛药业有限公司 Blank-run prevention device for centrifugal pump
CN203129311U (en) * 2013-03-30 2013-08-14 国家电网公司 Intelligent vacuum draining device
CN203500090U (en) * 2013-09-27 2014-03-26 山西晋丰煤化工有限责任公司 Auxiliary start device of circulating water pump
CN104595199A (en) * 2014-12-03 2015-05-06 广州市昌宁机电设备有限公司 Vacuum water diversion device capable of automatically supplementing water
CN204419605U (en) * 2015-01-20 2015-06-24 湖南山源安自控系统有限公司 The anti-dry tap of a kind of mine stainless steel multistage pump prevents the automatic safety device burnt to death

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109340133A (en) * 2018-12-06 2019-02-15 无锡市海星船舶动力有限公司 With the centrifugal water pump for automatically controlling anti-dry tap function
CN114893449A (en) * 2022-05-26 2022-08-12 淮南同正科技有限公司 Applicable to the cavitation elimination device and system for water-free water pump without bottom valve in coal mine

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Application publication date: 20150513