CN101725536A - Portable fire pump - Google Patents
Portable fire pump Download PDFInfo
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- CN101725536A CN101725536A CN200910219247A CN200910219247A CN101725536A CN 101725536 A CN101725536 A CN 101725536A CN 200910219247 A CN200910219247 A CN 200910219247A CN 200910219247 A CN200910219247 A CN 200910219247A CN 101725536 A CN101725536 A CN 101725536A
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- petrol engine
- portable fire
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Abstract
The invention relates to a portable fire pump comprising a petrol engine (1) and a pump body (2), wherein the pump body (2) comprises a sealing base (4), a pump shell (3), a main shaft (5), three-level centrifugal impellers and two-level guide blades, wherein the sealing base (4) is connected with the petrol engine (1); the pump shell (3) is fixedly connected with the sealing base (4); the main shaft (5) is arranged in the center of the pump shell (3); the three-level centrifugal impellers are sequentially fixed with the main shaft (5); the two-level guide blades are sequentially fixed in the pump shell (3); the main shaft (5) is coaxially connected with an output shaft of the petrol engine (1); and the sealing base (4) is internally provided with a sealing device (6). The invention solves the technical problems of large size, heavy weight, high energy consumption and easy damage of the traditional fire pump, has the advantages of small size, light weight, portability, low energy consumption and technical effect of the portable fire pump which can automatically close the petrol engine (1) under the condition of an insufficient water source.
Description
Technical field
The present invention relates to a kind of fire water pump, relate in particular to a kind of portable fire pump.
Background technique
The fire-fighting and the used fire water pump of living water in area such as narrow street, cities and towns, rural area path, abrupt slope, forest zone, mountain area, volume is big, weight is big, energy consumption is high, and damages fire water pump and petrol engine easily during insufficient water sources.Existing fire water pump adopts 1 grade of curved blade or 3 grades of curved blades, and its volume is bigger than normal, weight is big, energy consumption is high and easy damage.
Summary of the invention
The object of the invention provides that a kind of volume is little, light weight, easy to carry, energy consumption is low, can close the portable fire pump of petrol engine under the situation of insufficient water sources automatically, it has solved, and existing fire water pump volume is big, weight is big, energy consumption is high and the technical problem of easy damage.
Technical solution of the present invention:
A kind of portable fire pump, comprise petrol engine, the pump housing, its difference is: the pump case that the described pump housing comprises the sealing seat that links to each other with petrol engine, be connected with sealing seat, be arranged on the main shaft at pump case center, successively be fixed on three grades of centrifugal impellers on the main shaft, be fixed on two-stage stator in the pump case successively, described main shaft is connected with output shaft of gasoline engine is coaxial, is provided with main shaft sealing device in the described sealing seat.
It also comprises the overspeed protection circuit, and described overspeed protection circuit comprises voltage regulation unit, same trigger element, comparison amplifying unit and performance element frequently; Described voltage regulation unit comprises current-limiting resistance R3, filter capacitor C1, voltage-stabiliser tube D2 and bypass resistance R4; Low side ground connection after described filter capacitor C1, voltage-stabiliser tube D2 and the bypass resistance R4 parallel connection, its high-end and end current-limiting resistance R3 join as the output terminal Vcc of voltage regulation unit another termination petrol engine signal output part 34 of described current-limiting resistance R3; The described trigger element of frequency together comprises current-limiting resistance R2, diode D3, set-reset flip-floop U1, charging resistor R8 and charging capacitor C2; The data input pin D of described set-reset flip-floop U1 meets the output terminal Vcc of voltage regulation unit, its set end S ground connection, its reset terminal R connects the high-end of charging capacitor C2, its clock signal terminal CLK joins by current-limiting resistance R2 and petrol engine signal output part 34, its in-phase output end Q connects the end of charging resistor R8, the other end of described charging resistor R8 and the high-end of charging capacitor C2 are joined, the low side ground connection of described charging capacitor C2, the anode of described diode D3 connects the clock signal terminal of set-reset flip-floop U1, and its negative electrode meets the output terminal Vcc of voltage regulation unit; Described relatively amplifying unit comprises charging resistor R9, charging resistor R10, charging capacitor C3, current-limiting resistance R11, diode D5, diode D6, voltage comparator U2; Described charging resistor R9, charging resistor R10 and charging capacitor C3 connect successively, the other end ground connection of described charging capacitor C3, the in-phase input end of described voltage comparator U2 joins by the in-phase output end Q of charging resistor R9 and set-reset flip-floop U1, the inverting input of described voltage comparator U2 joins by the output terminal Vcc of current-limiting resistance R11 and voltage regulation unit, the anode of the negative electrode of described diode D5 and diode D6 joins, the minus earth of described diode D6, the inverting input of the anode of described diode D5 and voltage comparator U2 joins; The output terminal Vcc of the power supply termination voltage regulation unit of described voltage comparator U2; Be connected to feedback resistance R15 between the in-phase input end of described voltage comparator U2 and the output terminal; Described performance element comprises diode D4, current-limiting resistance R17, resistance R16 and power tube K; The anode of described diode D4 connects the output terminal of voltage comparator U2, and its negative electrode is by current-limiting resistance R17 ground connection; The grid of described power tube K connects the negative electrode of diode D4 by resistance R16, and its drain electrode connects petrol engine signal output part 34, its source ground.
Above-mentioned overspeed protection circuit also comprises the signal correction unit; Described signal correction unit comprises that forward is serially connected in the diode D1 of petrol engine signal output part 34.
The above-mentioned trigger element of frequency together comprises the repid discharge unit, described repid discharge unit comprises resistance R 5 and R6 and triode Q, one end of described resistance R 5 links to each other with the clock signal terminal CLK of set-reset flip-floop U1, its the other end is by resistance R 6 ground connection, the collector electrode of described triode Q connects the high-end of charging capacitor C2, its base stage is by resistance R 6 ground connection, its grounded-emitter connection.
Above-mentioned main shaft and output shaft of gasoline engine coaxial threaded are connected.
Above-mentioned three grades of centrifugal impellers all adopt the hyperbolic blade.
Above-mentioned main shaft sealing device is a mechanical seal device.
Above-mentioned pump case adopts bucket pocket type layout.
Above-mentioned portable fire pump also comprises suction valve and vacuum drinking device.
The advantage that the present invention has:
1, pump shaft of the present invention and output shaft of gasoline engine adopt be threaded, energy-efficient, stable and safe in operation, saving space, maintenance be convenient.
2, the present invention adopts three grades of centrifugal hyperbolic vane pumps of single suction formula, and pump case adopts a bucket pocket type layout, and firm compact, rationally distributed, the operation and easy to maintenance of overall structure has farthest reduced the volume of pump.
3, the present invention carries the overspeed protection circuit, can realize the hypervelocity shutdown, has protected the safety of fire personnel and equipment.The folding that the same frequency trigger element of overspeed protection circuit and comparison amplifying unit come power controlling pipe K, petrol engine and pump have effectively been protected in closing automatically when realizing the operation of petrol engine overclocking.The voltage that the overspeed protection circuit utilizes voltage regulation unit to obtain from input signal drives each components and parts of overspeed protection circuit, does not need to provide separately the circuit of stabilized power source, and circuit structure is simple, volume is little, function admirable.And voltage regulation unit can be realized at the voltage protection of petrol engine output spike pulse up to 250V.The overspeed protection circuit is provided with a frequency range receive window by comparing amplifying unit; peak frequency when this window allows proper functioning; when the unloaded situation of appearance causes the rotating speed of petrol engine to raise suddenly under the nominal operating condition, can trigger the overspeed protection circuit working.
4, double shrouded wheel of the present invention adopts the big unsteady flow manostatic technique of head coefficient, and under the equal parameter, impeller outer diameter is littler by about 30% than common impeller.
5, the invention provides multiple diversion and select, have suction valve and vacuum drinking device, manually diversion also can be used the self-priming diversion, and self-priming time is shorter, and flow is big.
6, axle envelope of the present invention adopts advanced mechanical seal form, can avoid a leak sealing water phenomenon effectively.
7, the present invention can be applicable to the fire-fighting and the living water in areas such as narrow street, cities and towns, rural area path, abrupt slope, forest zone, mountain area.
Description of drawings
Fig. 1 and Fig. 2 are structural representation of the present invention;
Fig. 3 is the principle schematic of overspeed protection circuit.
Wherein: 1-petrol engine, the 2-pump housing, 3-pump case, 4-sealing seat, 5-main shaft, 11-impeller, 12-sencond stage impeller, 13-one-level impeller, 21-final stage stator, 22-stator, 6-main shaft sealing device, 7-overspeed protection circuit, 8-backflushing type hand pulling starter.
Embodiment
Portable fire pump of the present invention, comprise petrol engine 1, the pump housing 2, suction valve and vacuum drinking device, the pump case 3 that the pump housing comprises the sealing seat 4 that links to each other with petrol engine, be connected with sealing seat 4, be arranged on the main shaft 5 at pump case 3 centers, successively be fixed on impeller 11, sencond stage impeller 12 and 13 3 grades of centrifugal impellers of one-level impeller on the main shaft 5, be fixed on final stage stator 21 and stator 22 two-stage stators in the pump case 3 successively, main shaft 5 is connected with petrol engine 1 output shaft coaxial threaded, is provided with main shaft sealing device 6 in the sealing seat 4; Three grades of centrifugal impellers all adopt the hyperbolic blade; Main shaft sealing device 6 is a mechanical seal device; Pump case 3 adopts bucket pocket type layout.
Pump case adopts high strength space flight aluminum alloy material, and the Intensity Design safety coefficient reaches 2.0, meets NBS; Part adopts vacuum die casting, realizes the high strength of thin-walled parts, at utmost reduces the weight of pump, and complete machine weight is 14.2kg; The volume of pump of the present invention is 400mm * 325mm * 340mm; Selecting two-stroke gasoline engine for use is power, and petrol engine has backflushing type hand pulling starter 8; Working speed rotating speed 6000r/min; Power is powerful, and running is stable, starts flexibly, and rate of fault is low; Power 8HP; Range 33m; Rated flow 2.4L/S; Peak rate of flow 260L/min under the equal range.
The signal correction unit comprises that forward is serially connected in the diode D1 of petrol engine signal output part 34, and it is used to revise the output signal of petrol engine.
Voltage regulation unit comprises current-limiting resistance R3, filter capacitor C1, voltage-stabiliser tube D2 and bypass resistance R4; Low side ground connection after filter capacitor C1, voltage-stabiliser tube D2 and the bypass resistance R4 parallel connection, its high-end and end current-limiting resistance R3 join as the output terminal Vcc of voltage regulation unit another termination petrol engine signal output part 34 of current-limiting resistance R3; By electric capacity charging, energy storage theory as can be known, the voltage V at capacitor C 1 two ends
CcFor:
Wherein R is that the resistance, t of current-limiting resistance R3 is for applying signal time, U
0Be C1 two ends initial voltage value, U
sBe signal voltage value.
Comprise current-limiting resistance R2, diode D3, set-reset flip-floop U1, charging resistor R8, charging capacitor C2 and repid discharge unit with the frequency trigger element; The data input pin D of set-reset flip-floop U1 meets the output terminal Vcc of voltage regulation unit, its set end S ground connection, its reset terminal R connects the high-end of charging capacitor C2, its clock signal terminal CLK joins by current-limiting resistance R2 and petrol engine signal output part 34, its in-phase output end Q connects the end of charging resistor R8, the other end of charging resistor R8 and the high-end of charging capacitor C2 are joined, and the duration of charge is t=R
8C
2, the low side ground connection of charging capacitor C2; The anode of diode D3 connects the clock signal terminal of set-reset flip-floop U1, and its negative electrode meets the output terminal Vcc of voltage regulation unit, is used to limit the voltage clock signal of trigger U1; The repid discharge unit comprises resistance R 5 and R6 and triode Q, one end of resistance R 5 links to each other with the clock signal terminal CLK of set-reset flip-floop U1, and its other end is by resistance R 6 ground connection, and the collector electrode of triode Q connects the high-end of charging capacitor C2, its base stage is by resistance R 6 ground connection, its grounded-emitter connection; Finishing of repid discharge unit accelerated charging capacitor C 2 discharges.
Relatively amplifying unit comprises charging resistor R9, charging resistor R10, charging capacitor C3, current-limiting resistance R11, diode D5, diode D6, voltage comparator U2; Described charging resistor R9, charging resistor R10 and charging capacitor C3 connect successively, the other end ground connection of charging capacitor C3, the in-phase input end of voltage comparator U2 joins by the in-phase output end Q of charging resistor R9 and set-reset flip-floop U1, the inverting input of voltage comparator U2 joins by the output terminal Vcc of current-limiting resistance R11 and voltage regulation unit, the anode of the negative electrode of diode D5 and diode D6 joins, the minus earth of diode D6, the inverting input of the anode of diode D5 and voltage comparator U2 joins; The output terminal Vcc of the power supply termination voltage regulation unit of voltage comparator U2; Be connected to feedback resistance R15 between the in-phase input end of voltage comparator U2 and the output terminal.
Performance element comprises diode D4, current-limiting resistance R17, resistance R16 and power tube K; The anode of diode D4 connects the output terminal of voltage comparator U2, and its negative electrode is by current-limiting resistance R17 ground connection; The grid of power tube K connects the negative electrode of diode D4 by resistance R16, and its drain electrode connects petrol engine signal output part 34, its source ground.
The utility model overspeed protection circuit working principle and working procedure:
The petrol engine signal enters the overspeed protection circuit from signal output part 34, provides energy by current-limiting resistance R3 for voltage regulation unit, guarantees that voltage regulation unit output end voltage Vcc is stable, and making the same frequency trigger element of back and compare amplifying unit can proper functioning.
The petrol engine signal provides CLK clock by current-limiting resistance R2 for same trigger element frequently simultaneously, the amplitude of trigger U1 output waveform and input signal amplitude are irrelevant, but oscillation frequency is identical with input signal, for the comparison amplifying unit and the performance element of back lays the foundation.
The rising of the petrol engine output signal frequency of signal output part 34 causes the height of charging voltage.When the in-phase input end voltage of voltage comparator U2 is that charging voltage is during greater than the inverting input voltage reference value; the voltage comparator output voltage; the power tube K work of this Control of Voltage performance element, the petrol engine signal is by the drain electrode end shorted to earth of power tube K, and petrol engine and pump are protected.
For effects such as waterproof and dustproof, antidetonations, put into modular cartridge through the circuit board of test, carry out perfusion resin glue.Circuit board behind the encapsulating has passed through immersed water test in 72 hours, and test result proves that the circuit board behind the encapsulating has extraordinary water-proof performance.
Claims (10)
1. portable fire pump, comprise petrol engine (1), the pump housing (2), it is characterized in that: the pump case (3) that the described pump housing (2) comprises the sealing seat (4) that links to each other with petrol engine (1), be connected with sealing seat (4), be arranged on the main shaft (5) at pump case (3) center, successively be fixed on three grades of centrifugal impellers on the main shaft (5), be fixed on two-stage stator in the pump case (3) successively, described main shaft (5) and petrol engine (1) the coaxial connection of output shaft are provided with main shaft sealing device (6) in the described sealing seat (4).
2. portable fire pump according to claim 1 is characterized in that: it also comprises the overspeed protection circuit, and described overspeed protection circuit comprises voltage regulation unit, same trigger element, comparison amplifying unit and performance element frequently; Described voltage regulation unit comprises current-limiting resistance (R3), filter capacitor (C1), voltage-stabiliser tube (D2) and bypass resistance R4; Low side ground connection after described filter capacitor (C1), voltage-stabiliser tube (D2) and bypass resistance (R4) parallel connection, its high-end and end current-limiting resistance (R3) join as the output terminal (Vcc) of voltage regulation unit another termination petrol engine signal output part (34) of described current-limiting resistance (R3); The described trigger element of frequency together comprises current-limiting resistance (R2), diode (D3), set-reset flip-floop (U1), charging resistor (R8) and charging capacitor (C2); The data input pin (D) of described set-reset flip-floop (U1) connects the output terminal (Vcc) of voltage regulation unit, its set end (S) ground connection, its reset terminal (R) connects the high-end of charging capacitor (C2), its clock signal terminal (CLK) joins by current-limiting resistance (R2) and petrol engine signal output part (34), its in-phase output end (Q) connects an end of charging resistor (R8), high-end the joining of the other end of described charging resistor (R8) and charging capacitor (C2), the low side ground connection of described charging capacitor (C2), the anode of described diode (D3) connects the clock signal terminal of set-reset flip-floop (U1), and its negative electrode connects the output terminal (Vcc) of voltage regulation unit; Described relatively amplifying unit comprises charging resistor (R9), charging resistor (R10), charging capacitor (C3), current-limiting resistance (R11), diode (D5), diode (D6), voltage comparator (U2); Described charging resistor (R9), charging resistor (R10) and charging capacitor (C3) are connected successively, the other end ground connection of described charging capacitor (C3), the in-phase input end of described voltage comparator (U2) joins by the in-phase output end (Q) of charging resistor (R9) with set-reset flip-floop (U1), the inverting input of described voltage comparator (U2) joins by the output terminal (Vcc) of current-limiting resistance (R11) with voltage regulation unit, the anode of the negative electrode of described diode (D5) and diode (D6) joins, the minus earth of described diode (D6), the inverting input of the anode of described diode (D5) and voltage comparator (U2) joins; The output terminal (Vcc) of the power supply termination voltage regulation unit of described voltage comparator (U2); Be connected to feedback resistance (R15) between the in-phase input end of described voltage comparator (U2) and the output terminal; Described performance element comprises diode (D4), current-limiting resistance (R17), resistance (R16) and power tube (K); The anode of described diode (D4) connects the output terminal of voltage comparator (U2), and its negative electrode is by current-limiting resistance (R17) ground connection; The grid of described power tube (K) connects the negative electrode of diode (D4) by resistance (R16), and its drain electrode connects petrol engine signal output part (34), its source ground.
3. portable fire pump according to claim 2 is characterized in that: described overspeed protection circuit also comprises the signal correction unit; Described signal correction unit comprises that forward is serially connected in the diode of petrol engine signal output part 34 (D1).
4. according to claim 2 or 3 described portable fire pumps, it is characterized in that: the described trigger element of frequency together comprises the repid discharge unit, described repid discharge unit comprises resistance (R5) and (R6) and triode (Q), one end of described resistance (R5) links to each other with the clock signal terminal (CLK) of set-reset flip-floop (U1), its the other end is by resistance (R6) ground connection, the collector electrode of described triode (Q) connects the high-end of charging capacitor (C2), and its base stage is by resistance (R6) ground connection, its grounded-emitter connection.
5. according to claim 1 or 2 or 3 described portable fire pumps, it is characterized in that: described main shaft (5) is connected with petrol engine (1) output shaft coaxial threaded.
6. portable fire pump according to claim 5 is characterized in that: described three grades of centrifugal impellers all adopt the hyperbolic blade.
7. portable fire pump according to claim 6 is characterized in that: described main shaft sealing device (6) is a mechanical seal device.
8. portable fire pump according to claim 7 is characterized in that: described pump case (3) adopts bucket pocket type layout.
9. portable fire pump according to claim 8 is characterized in that: described portable fire pump also comprises suction valve and vacuum drinking device.
10. portable fire pump according to claim 5 is characterized in that: described portable fire pump also comprises suction valve and vacuum drinking device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102192471A CN101725536B (en) | 2009-12-01 | 2009-12-01 | Portable fire pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102192471A CN101725536B (en) | 2009-12-01 | 2009-12-01 | Portable fire pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101725536A true CN101725536A (en) | 2010-06-09 |
| CN101725536B CN101725536B (en) | 2012-01-18 |
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ID=42446948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102192471A Active CN101725536B (en) | 2009-12-01 | 2009-12-01 | Portable fire pump |
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| Country | Link |
|---|---|
| CN (1) | CN101725536B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103133416A (en) * | 2011-11-25 | 2013-06-05 | 湖北双剑鼓风机制造有限公司 | Mass-flow oxygen production three-dimensional flow centrifugal blower |
| CN103939336A (en) * | 2014-05-18 | 2014-07-23 | 余文凌 | Portable fire pump |
| CN105386957A (en) * | 2015-12-09 | 2016-03-09 | 陕西航天动力高科技股份有限公司 | Double-starting forest fire pump |
| CN108278211A (en) * | 2018-03-29 | 2018-07-13 | 芜湖长捷航空动力科技有限责任公司 | A kind of two-stage high-pressure portable fire pump |
| CN109989922A (en) * | 2019-04-28 | 2019-07-09 | 浙江威龙泵业有限公司 | Combined type self-priming centrifugal pump |
-
2009
- 2009-12-01 CN CN2009102192471A patent/CN101725536B/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103133416A (en) * | 2011-11-25 | 2013-06-05 | 湖北双剑鼓风机制造有限公司 | Mass-flow oxygen production three-dimensional flow centrifugal blower |
| CN103939336A (en) * | 2014-05-18 | 2014-07-23 | 余文凌 | Portable fire pump |
| CN105386957A (en) * | 2015-12-09 | 2016-03-09 | 陕西航天动力高科技股份有限公司 | Double-starting forest fire pump |
| CN108278211A (en) * | 2018-03-29 | 2018-07-13 | 芜湖长捷航空动力科技有限责任公司 | A kind of two-stage high-pressure portable fire pump |
| CN109989922A (en) * | 2019-04-28 | 2019-07-09 | 浙江威龙泵业有限公司 | Combined type self-priming centrifugal pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101725536B (en) | 2012-01-18 |
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Effective date of registration: 20201231 Address after: 710077 No. 78, Kam Yip Road, hi tech Zone, Shaanxi, Xi'an Patentee after: XI'AN AEROSPACE PUMPS Co.,Ltd. Address before: 710077 No. 78, Kam Yip Road, hi tech Zone, Shaanxi, Xi'an Patentee before: SHAANXI AEROSPACE POWER HIGH-TECH Co.,Ltd. |
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