CN103334934A - Electric petrol-feed pump with self-protection function - Google Patents
Electric petrol-feed pump with self-protection function Download PDFInfo
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- CN103334934A CN103334934A CN2013102902706A CN201310290270A CN103334934A CN 103334934 A CN103334934 A CN 103334934A CN 2013102902706 A CN2013102902706 A CN 2013102902706A CN 201310290270 A CN201310290270 A CN 201310290270A CN 103334934 A CN103334934 A CN 103334934A
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- direct current
- bonnet
- pump
- pump housing
- protection element
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Abstract
The invention discloses a direct-current electric petrol-feed pump with a self-protection function. The direct-current electric petrol-feed pump comprises a direct-current permanent-magnetic motor and a petro-feed pump body driven by the direct-current permanent-magnetic motor. An output shaft of the direct-current permanent-magnetic motor is connected with an impeller of the petrol-feed pump body, a wiring board is arranged on a rear cover of the direct-current permanent-magnetic motor, and a power line of the direct-current permanent-magnetic motor forms a series-connection circuit with the direct-current permanent-magnetic motor through the wiring board. The electric petrol-feed pump is characterized in that a pump body overheat protection element with impedance is arranged in the pump body and forms a series-connection circuit with the direct-current permanent-magnetic motor. The electric petrol-feed pump can achieve self-protection of the petrol-feed pump under the conditions of overpressure on an outlet, impurity blocking, air suction on an inlet and the like with low cost and the reliable method.
Description
Technical field
The present invention relates to engineering machinery fuel-servicing equipment technical field, especially a kind of direct current drive gasoline pump with the self-protection function.
Background technique
Direct current gasoline pump in the market is a kind of vane pump, occurs problems such as burn-down of electric motor, seal failure, damage of bearings, blade damage easily owing to lack rational self-protection function.
Make a concrete analysis of as follows:
1. in order to prevent the too high damage to motor and pump of gasoline pump outlet pressure.First kind of scheme is to be provided with relief valve at pump housing inner chamber or outside.But relief valve mechanism complexity, the problem that valve port is revealed can appear in job insecurity after the overflow especially for the first time.Operating mode is invalid to blade is stuck etc. for this scheme.Second kind of scheme is to be provided with for detection of the vane pump internal pressure and to produce the pressure transducer that signal feed back is given controller refueling delivery side of pump.This arrangements complexity, and to blade is stuck etc. operating mode is invalid.
2. continue the damage that operation causes under the empty situation in order to prevent that gasoline pump from inhaling at entrance.First kind of scheme is at the gasoline pump entrance sensitive switch to be installed, when the gasoline pump entrance does not have liquid continuous flowing through, and autostop.Because the sensitive switch security level is low, poor stability.Cause this scheme rate of fault very high.Second kind of scheme is that the gasoline pump intelligent control system is installed, and comprises intelligence sample module, A/D modular converter, intelligent computing module and operating mode display modular.This arrangements complexity, cost is very high.
3. the vane pump that has in the market adopts at motor rear end and covers the method that the overtemperature protection element is installed.This method is inhaled under the empty situation at the oil pump entrance, can't play a protective role to gasoline pump.Because the oil pump entrance is inhaled under the empty situation, electric current can maintain very little level, and the direct current permanent magnet motor heating value is little, but the gasoline pump pump housing can produce a large amount of heats under the situation that does not have cooling and lubricate, and temperature continues to raise.The oil sealing of the pump housing, bearing, blade etc. are caused damage.
Summary of the invention
Technical problem to be solved by this invention is: adopt low relatively cost, very reliable mode to solve problems such as the easy burn-down of electric motor that occurs of gasoline pump, seal failure, damage of bearings, blade damage; especially can solve under the empty situation of entrance suction and prevent burning of oil pump, and a kind of direct current drive gasoline pump with the self-protection function is provided.The direct current drive gasoline pump of this band self-protection function is by installing the overtemperature protection element in the gasoline pump pump housing; adopt a kind of simple protective circuit that does not need controller,, entrance stuck in oil pump outlet superpressure, impurity inhaled the self-protection that realizes gasoline pump under the situation such as sky.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of direct current drive gasoline pump with the self-protection function, comprise direct current permanent magnet motor and the gasoline pump that drives with direct current permanent magnet motor, the output shaft of described direct current permanent magnet motor links to each other with the impeller of described gasoline pump, the motor bonnet of described direct current permanent magnet motor is provided with wire board, the power line of described direct current permanent magnet motor forms series circuit by described wire board and direct current permanent magnet motor, it is characterized in that, the pump housing overtemperature protection element of mounting strap impedance in the pump housing of described gasoline pump, described pump housing overtemperature protection element and direct current permanent magnet motor form series circuit; With electric current increase or the gasoline pump pump housing in temperature when being increased to set temperature value, the bimetallic element in the pump housing overtemperature protection element moves rapidly, opens the break of contact circuit; When device was cooled to safe working temperature, the overtemperature protection element resetted in the contact auto-closing, the pump housing, recovered energising.
In a preferred embodiment of the invention, be provided with a pump housing overtemperature protection element installation cavity in the pump housing of described gasoline pump, described pump housing overtemperature protection element is arranged in the described pump housing overtemperature protection element installation cavity.
In a preferred embodiment of the invention, the gasoline pump that causes starts automatically because pump housing overtemperature protection element automatically resets in order to prevent, also is parallel with a pump housing high value of resistance heater element PTC at described pump housing overtemperature protection element and forms parallel circuit; Wherein during the gasoline pump proper functioning, pump housing high value of resistance heater element PTC can not produce high temperature.When pump housing overtemperature protection element disconnected, pump housing high value of resistance heater element PTC can produce high temperature, and this high temperature can make pump housing overtemperature protection element be in turnoff state always, and gasoline pump is out of service; After the power supply of direct current permanent magnet motor was manually disconnected, pump housing high value of resistance heater element PTC began cooling, and after cooling after a while, pump housing overtemperature protection element automatically resets; Connect power supply again, oil pump resumes operation.Have only hand off gasoline pump power supply like this, wait for a period of time, gasoline pump could start when connecting power supply again.
In a preferred embodiment of the invention, described pump housing high value of resistance heater element PTC and described pump housing overtemperature protection element are superimposed.
In a preferred embodiment of the invention, be not subjected to the influence that the rotor overtemperature causes for the better protection gasoline pump.Motor bonnet at described dc permanent magnet motor has additional the bonnet overtemperature protection element of being with impedance, and described bonnet overtemperature protection element is connected with pump housing overtemperature protection element, direct current permanent magnet motor, jointly gasoline pump is protected.The pump head no matter any reason causes or rotor overtemperature or supercurrent all can the rapidest enforcement protections.
In a preferred embodiment of the invention, be provided with a motor bonnet circular groove in described motor bonnet, the bonnet overtemperature protection element of described band impedance is arranged in the described motor bonnet circular groove.
In a preferred embodiment of the invention, the gasoline pump that causes starts automatically because bonnet overtemperature protection element automatically resets in order to prevent, also be provided with a bonnet high value of resistance heater element PTC on the motor bonnet of described direct current permanent magnet motor, described bonnet high value of resistance heater element PTC is in parallel with described bonnet overtemperature protection element; Bonnet high value of resistance heater element PTC can not produce high temperature during the gasoline pump proper functioning; when bonnet overtemperature protection element disconnects; bonnet high value of resistance heater element PTC can produce high temperature, and this high temperature can make bonnet overtemperature protection element be in turnoff state always, and gasoline pump is out of service.After power supply was manually disconnected, bonnet high value of resistance heater element PTC began cooling, and after cooling after a while, bonnet overtemperature protection element automatically resets, and connects power supply again, and gasoline pump resumes operation.
In a preferred embodiment of the invention, described bonnet high value of resistance heater element PTC is superimposed upon on the bonnet overtemperature protection element of described band impedance.
In a preferred embodiment of the invention, described power line passes the gap between the stator of described direct current permanent magnet motor.
In a preferred embodiment of the invention, described power line passes the stator conductor groove in the gap between the stator that is arranged on described direct current permanent magnet motor.
In a preferred embodiment of the invention, described stator conductor groove is provided with the stator conductor installation foot, and described stator conductor installation foot is pressed on the motor stator casing of direct current permanent magnet motor by motor stator.
The present invention adopts lower cost, mode realizes the self-protection under the situations such as gasoline pump is stuck in outlet superpressure, impurity, entrance is inhaled sky very reliably.
Description of drawings
Fig. 1 is the direct current drive gasoline pump embodiment's 1 of band self-protection function of the present invention structural representation.
Fig. 2 is the direct current drive gasoline pump embodiment's 1 of band self-protection function of the present invention electrical schematic diagram.
Stator conductor groove scheme of installation among the direct current drive gasoline pump embodiment 1 of Fig. 3 band self-protection of the present invention function.
Stator conductor groove structural representation among the direct current drive gasoline pump embodiment 1 of Fig. 4 band self-protection of the present invention function.
Stator conductor groove cross sectional representation among the direct current drive gasoline pump embodiment 1 of Fig. 5 band self-protection of the present invention function.
Fig. 6 is the direct current drive gasoline pump embodiment's 2 of band self-protection function of the present invention structural representation.
Fig. 7 is the direct current drive gasoline pump embodiment's 2 of band self-protection function of the present invention electrical schematic diagram.
Fig. 8 is the direct current drive gasoline pump embodiment's 3 of band self-protection function of the present invention structural representation.
Fig. 9 is the direct current drive gasoline pump embodiment's 3 of band self-protection function of the present invention electrical schematic diagram.
Figure 10 is the direct current drive gasoline pump embodiment's 3 of band self-protection function of the present invention structural representation.
Figure 11 is the direct current drive gasoline pump embodiment's 3 of band self-protection function of the present invention electrical schematic diagram.
Embodiment
Now by reference to the accompanying drawings to further detailed explanation of the present invention.These accompanying drawings are the schematic representation of simplification, basic structure of the present invention only is described in a schematic way, so it only show the formation relevant with the present invention.
Embodiment 1
Referring to Fig. 1 and Fig. 2; the direct current drive gasoline pump of the band self-protection function that provides among the figure; comprise direct current permanent magnet motor 100 and gasoline pump 200, wherein direct current permanent magnet motor 100 comprises rotor 110, motor stator 120, motor stator casing 130, motor bonnet 140 and wire board 150.Gasoline pump 200 comprises the pump housing 210 and impeller 220, and the pump housing 210 is provided with into and out of the hydraulic fluid port (not shown), is provided with pump chamber 211 in the pump housing 210, pump chamber 211 be communicated with into and out of hydraulic fluid port.
The rear end of motor stator casing 130 is connected with motor bonnet 140, the front end of motor stator casing 130 is connected with the pump housing 210, motor stator 120 is a pair of magnetic pole, be fixed on the inwall of motor stator casing 130, the rear end of rotor 110 is located on the motor bonnet 140 by 160 on bearing, the front end of rotor 110 is motor output shaft 111, this motor output shaft 111 is located in the pump housing 210 by 170 on bearing, motor output shaft 111 extends in the pump chamber 211, and impeller 220 is fixed on motor output shaft 111 and extends on the end in the pump chamber 211.Wire board 150 is fixed on the interior edge face of motor bonnet 140, at motor bonnet 140 waterproof power connector 180 is installed, and waterproof power connector 180 is drawn the external power line 151 on the wire board 150.
Offer a pump housing overtemperature protection element installation cavity 212 at the pump housing 210 towards the end face of direct current permanent magnet motor 100; be placed with a pump housing overtemperature protection element 190 in this pump housing overtemperature protection element installation cavity 212, this pump housing overtemperature protection element 190 is connected on the wire board 150 by an interior power line 191.Interior power line 191 passes the slit 121 of motor stator 120.In order to protect interior power line, power line 191 contacts with rotor 110 in preventing.One stator conductor groove 122 is installed in the slit 121 of motor stator 120.
Referring to Fig. 3 to Fig. 5, stator conductor groove 122 is provided with a pair of stator conductor installation foot 122a, a pair of stator conductor installation foot 122a is pressed on the motor stator casing 130 of direct current permanent magnet motor 100 by a pair of magnetic pole of motor stator 120, prevents that stator conductor groove 122 and rotor 110 from coming in contact.
Embodiment 2
Referring to Fig. 6 and Fig. 7; the direct current drive gasoline pump of the direct current drive oiling pump structure of this embodiment's band self-protection function and embodiment 1 band self-protection function is basic identical; just overtemperature protection element 190 is superimposed with a pump housing high value of resistance heater element PTC190a in the pump housing, and this mainly is that the oil pump that causes starts automatically because pump housing overtemperature protection element 190 automatically resets in order to prevent.Referring to Fig. 7, overtemperature protection element 190 is in parallel with pump housing high value of resistance heater element PTC190a in the pump housing.
During gasoline pump 200 proper functioning, pump housing high value of resistance heater element PTC190a can not produce high temperature.When overtemperature protection element in the pump housing 190 disconnected, pump housing high value of resistance heater element PTC190a can produce high temperature, and this high temperature can make the interior overtemperature protection element 190 of the pump housing be in turnoff state always, and gasoline pump 200 is out of service.After power supply was manually disconnected, pump housing high value of resistance heater element PTC190a began cooling, and overtemperature protection element 190 automatically resets in the pump housing after cooling after a while.Connect power supply again, gasoline pump 200 resumes operation.Have only hand off gasoline pump power supply like this, wait for a period of time, gasoline pump could start when connecting power supply again.
Embodiment 3
Referring to Fig. 8 and Fig. 9; the direct current drive gasoline pump of the direct current drive oiling pump structure of this embodiment's band self-protection function and embodiment 2 band self-protection function is basic identical; just offer a motor bonnet circular groove 141 at motor bonnet 140; the internal diameter of motor bonnet circular groove 141 is greater than the external diameter of bearing 160, and the external diameter of motor bonnet circular groove 141 is less than the external diameter of wire board 150.In motor bonnet circular groove 141, be provided with the bonnet overtemperature protection element 140a of a band impedance; the bonnet overtemperature protection element 140a of band impedance is connected with wire board 150 by lead, and the bonnet overtemperature protection element 140a of band impedance connects with the interior overtemperature protection element 190 of the pump housing, direct current permanent magnet motor 200.Common like this gasoline pump 200 is protected.The pump head no matter any reason causes or rotor overtemperature or supercurrent all can the rapidest enforcement protections.
Embodiment 4
Referring to Figure 10 and Figure 11; the direct current drive gasoline pump of the direct current drive oiling pump structure of this embodiment's band self-protection function and embodiment 3 band self-protection function is basic identical; just the bonnet overtemperature protection element 140a in the band impedance is superimposed with a bonnet high value of resistance heater element PTC140b, and bonnet high value of resistance heater element PTC140b is in parallel with bonnet overtemperature protection element 140a.This mainly is that the gasoline pump 200 that causes starts automatically because bonnet overtemperature protection element 140a automatically resets in order to prevent; during gasoline pump 200 proper functioning; bonnet high value of resistance heater element PTC140b can not produce high temperature; when the bonnet overtemperature protection element 140a of band impedance disconnects; bonnet high value of resistance heater element PTC140b can produce high temperature; this high temperature can make the bonnet overtemperature protection element 140a of band impedance be in turnoff state always, and gasoline pump is out of service.After power supply was manually disconnected, bonnet high value of resistance heater element PTC140b began cooling, and after cooling after a while, the bonnet overtemperature protection element 140a of band impedance automatically resets, and connects power supply again, and gasoline pump 200 resumes operation.
Though the reference implementation illustration has been described specific embodiments of the present invention, those skilled in the art also are appreciated that in not breaking away from claim of the present invention institute restricted portion and make various changes and modification, belong within protection scope of the present invention.
Claims (11)
1. direct current drive gasoline pump with the self-protection function; comprise direct current permanent magnet motor and the gasoline pump that drives with direct current permanent magnet motor; the output shaft of described direct current permanent magnet motor links to each other with the impeller of described gasoline pump; the motor bonnet of described direct current permanent magnet motor is provided with wire board; the power line of described direct current permanent magnet motor forms series circuit by described wire board and direct current permanent magnet motor; it is characterized in that; the pump housing overtemperature protection element of mounting strap impedance in the pump housing of described gasoline pump, described pump housing overtemperature protection element and direct current permanent magnet motor form series circuit.
2. a kind of direct current drive gasoline pump with the self-protection function as claimed in claim 1; it is characterized in that; be provided with a pump housing overtemperature protection element installation cavity in the pump housing of described gasoline pump, described pump housing overtemperature protection element is arranged in the described pump housing overtemperature protection element installation cavity.
3. a kind of direct current drive gasoline pump with the self-protection function as claimed in claim 1 or 2 is characterized in that, also is parallel with a pump housing high value of resistance heater element PTC at described pump housing overtemperature protection element and forms parallel circuit; Wherein during the gasoline pump proper functioning, pump housing high value of resistance heater element PTC can not produce high temperature, and when pump housing overtemperature protection element disconnected, pump housing high value of resistance heater element PTC can produce high temperature, this high temperature can make pump housing overtemperature protection element be in turnoff state always, and gasoline pump is out of service; After the power supply of direct current permanent magnet motor was manually disconnected, pump housing high value of resistance heater element PTC began cooling, and after cooling after a while, pump housing overtemperature protection element automatically resets; Connect power supply again, oil pump resumes operation.Have only hand off gasoline pump power supply like this, wait for a period of time, gasoline pump could start when connecting power supply again.
4. a kind of direct current drive gasoline pump with the self-protection function as claimed in claim 3 is characterized in that, described pump housing high value of resistance heater element PTC and described pump housing overtemperature protection element are superimposed.
5. a kind of direct current drive gasoline pump with the self-protection function as claimed in claim 3; it is characterized in that; have additional the bonnet overtemperature protection element of band impedance at the motor bonnet of described dc permanent magnet motor; described bonnet overtemperature protection element is connected with pump housing overtemperature protection element, direct current permanent magnet motor, jointly gasoline pump is protected.
6. a kind of direct current drive gasoline pump with the self-protection function as claimed in claim 5; it is characterized in that; be provided with a motor bonnet circular groove in described motor bonnet, the bonnet overtemperature protection element of described band impedance is arranged in the described motor bonnet circular groove.
7. a kind of direct current drive gasoline pump with the self-protection function as claimed in claim 5, it is characterized in that, also be provided with a bonnet high value of resistance heater element PTC on the motor bonnet of described direct current permanent magnet motor, described bonnet high value of resistance heater element PTC is in parallel with described bonnet overtemperature protection element; Bonnet high value of resistance heater element PTC can not produce high temperature during the gasoline pump proper functioning, when bonnet overtemperature protection element disconnects, bonnet high value of resistance heater element PTC can produce high temperature, and this high temperature can make bonnet overtemperature protection element be in turnoff state always, and gasoline pump is out of service; After power supply was manually disconnected, bonnet high value of resistance heater element PTC began cooling, and after cooling after a while, bonnet overtemperature protection element automatically resets, and connects power supply again, and gasoline pump resumes operation.
8. a kind of direct current drive gasoline pump with the self-protection function as claimed in claim 7 is characterized in that, described bonnet high value of resistance heater element PTC is superimposed upon on the bonnet overtemperature protection element of described band impedance.
9. a kind of direct current drive gasoline pump with the self-protection function as claimed in claim 1 is characterized in that, described power line passes the gap between the stator of described direct current permanent magnet motor.
10. a kind of direct current drive gasoline pump with the self-protection function as claimed in claim 9 is characterized in that, described power line passes the stator conductor groove in the gap between the stator that is arranged on described direct current permanent magnet motor.
11. a kind of direct current drive gasoline pump with the self-protection function as claimed in claim 10; it is characterized in that; described stator conductor groove is provided with the stator conductor installation foot, and described stator conductor installation foot is pressed on the motor stator casing of direct current permanent magnet motor by motor stator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102902706A CN103334934A (en) | 2013-07-10 | 2013-07-10 | Electric petrol-feed pump with self-protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102902706A CN103334934A (en) | 2013-07-10 | 2013-07-10 | Electric petrol-feed pump with self-protection function |
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| Publication Number | Publication Date |
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| CN103334934A true CN103334934A (en) | 2013-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102902706A Pending CN103334934A (en) | 2013-07-10 | 2013-07-10 | Electric petrol-feed pump with self-protection function |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104653446A (en) * | 2013-11-22 | 2015-05-27 | 中国航空工业集团公司西安飞机设计研究所 | Thermal protection test method for fuel pump of airplane |
| CN114278553A (en) * | 2021-12-24 | 2022-04-05 | 珠海格力电器股份有限公司 | Steady voltage pump subassembly and purifier |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2328818Y (en) * | 1998-01-05 | 1999-07-14 | 高建树 | Micro large flow submersible pump |
| US20040230384A1 (en) * | 2003-05-13 | 2004-11-18 | Haynes Howard D. | Electric fuel pump condition monitor system using electrical signature analysis |
| JP2009228629A (en) * | 2008-03-25 | 2009-10-08 | Kubota Corp | Pump device |
| CN202125433U (en) * | 2011-05-06 | 2012-01-25 | 苏州优德通力电气有限公司 | Dry running free rubber impeller pump and circuit system thereof |
| CN202549721U (en) * | 2012-04-23 | 2012-11-21 | 东莞市晶品电子科技有限公司 | Lithium ion battery protector |
| CN203412778U (en) * | 2013-07-10 | 2014-01-29 | 上海霍雷加新材料科技有限公司 | Electric petrol pump with self-protection function |
-
2013
- 2013-07-10 CN CN2013102902706A patent/CN103334934A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2328818Y (en) * | 1998-01-05 | 1999-07-14 | 高建树 | Micro large flow submersible pump |
| US20040230384A1 (en) * | 2003-05-13 | 2004-11-18 | Haynes Howard D. | Electric fuel pump condition monitor system using electrical signature analysis |
| JP2009228629A (en) * | 2008-03-25 | 2009-10-08 | Kubota Corp | Pump device |
| CN202125433U (en) * | 2011-05-06 | 2012-01-25 | 苏州优德通力电气有限公司 | Dry running free rubber impeller pump and circuit system thereof |
| CN202549721U (en) * | 2012-04-23 | 2012-11-21 | 东莞市晶品电子科技有限公司 | Lithium ion battery protector |
| CN203412778U (en) * | 2013-07-10 | 2014-01-29 | 上海霍雷加新材料科技有限公司 | Electric petrol pump with self-protection function |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104653446A (en) * | 2013-11-22 | 2015-05-27 | 中国航空工业集团公司西安飞机设计研究所 | Thermal protection test method for fuel pump of airplane |
| CN114278553A (en) * | 2021-12-24 | 2022-04-05 | 珠海格力电器股份有限公司 | Steady voltage pump subassembly and purifier |
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Application publication date: 20131002 |