Supervised proportional metering device and methods for monitoring a metering pump
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F04B-009/10
G01F-001/36
F04B-013/02
F04B-043/067
출원번호
15750234
(2016-07-13)
등록번호
10551227
(2020-02-04)
우선권정보
FR-15 57578 (2015-08-06)
국제출원번호
PCT/IB2016/054171
(2016-07-13)
국제공개번호
WO2017/021801
(2017-02-09)
발명자
/ 주소
Lucas, Gregory
Charriere, Christophe
출원인 / 주소
DOSATRON INTERNATIONAL
대리인 / 주소
Young & Thompson
인용정보
피인용 횟수 :
0인용 특허 :
0
초록▼
Disclosed is a monitored proportional metering device including a liquid metering pump having an inlet, an outlet, a suction nozzle, and a mechanism for adjusting the flow in the nozzle. The metering device is also includes a detection assembly, the assembly including at least a unit for detecting t
Disclosed is a monitored proportional metering device including a liquid metering pump having an inlet, an outlet, a suction nozzle, and a mechanism for adjusting the flow in the nozzle. The metering device is also includes a detection assembly, the assembly including at least a unit for detecting the pressure variation in the nozzle, which unit is arranged between the first suction valve and the mixing chamber, a water meter at the inlet, a probe for measuring the level in the container of material to be suctioned, a unit for determining the position of the mechanism for adjusting the volume to be suctioned, and a man/machine interface for processing, recording, and displaying the data from the detection unit. Also disclosed are methods for monitoring a metering pump implementing the proportional metering device.
대표청구항▼
1. A proportional metering device comprising: a liquid metering pump, said liquid metering pump comprising: an inlet,an outlet,an intake nozzle, said intake nozzle comprising a first intake valve and communicating, at one of its ends, with a mixing chamber internal to the pump and, at the other of i
1. A proportional metering device comprising: a liquid metering pump, said liquid metering pump comprising: an inlet,an outlet,an intake nozzle, said intake nozzle comprising a first intake valve and communicating, at one of its ends, with a mixing chamber internal to the pump and, at the other of its ends, with a container of product to be drawn in, anda hydraulic motor comprising a member that effects a reciprocating movement,wherein said liquid metering pump comprises a water meter at the inlet thereof, andwherein a supply of liquid to the pump inlet trigger the reciprocating movement of the member, the reciprocating movement alternately causing intake through the nozzle as far as the mixing chamber with opening of the first intake valve when the member is moving away from the nozzle followed by expulsion at the pump outlet with closure of the first intake valve when the member is moving closer to the nozzle,said metering device further comprising:a mechanism for adjusting the flow rate in the nozzle, anda set of detection means, said set including at least: means for detecting a variation in pressure in the nozzle, said means being arranged between the first intake valve and the mixing chamber,a probe for measuring a level in the container of product to be drawn in,means for determining a position of the intake-volume adjustment mechanism, anda man/machine interface for processing, recording and displaying the data derived from the detection means. 2. The proportional metering device as claimed in claim 1, wherein the means for detecting the variation in pressure in the nozzle comprises: at least a first volume in fluidic communication with the inside of the nozzle,a closed second volume contiguous with the first while at the same time being separated therefrom by a flexible membrane, anda sensor of the pressure in the second volume so that the variations in supply of fluid to the first volume give rise to deformations of the membrane and, as a consequence, to variations in pressure in the closed second volume. 3. The proportional metering device as claimed in claim 2, wherein a second intake valve is arranged at the inlet of the mixing chamber. 4. The proportional metering device as claimed in claim 2, wherein the man/machine interface comprises an output connected to an alarm mechanism. 5. The proportional metering device as claimed in claim 1, wherein the man/machine interface comprises an output connected to an alarm mechanism. 6. The proportional metering device as claimed in claim 1, wherein the set of detection means comprises a means of counting cycles of the hydraulic motor. 7. A method for monitoring a metering pump employing a proportional metering device as claimed in claim 1, said device comprising a means of counting cycles of the hydraulic motor and an inlet water meter at the inlet of the metering pump, said method comprising: a step during which the position of the intake volume adjustment mechanism is measured,a later step during which, with the pump running, the volume of water admitted at the inlet of the pump, and the variation in volume of product in the container are determined over a duration T0,a later step in which the theoretical value of product drawn in over the duration T0 is calculated from the measured position of the adjusting mechanism and from the volume of water admitted at the inlet of the pump,a later step in which the theoretical value of product drawn in over the duration T0 is compared with the variation in volume of product in the container. 8. The method of monitoring a metering pump as claimed in claim 7, wherein the volume of water admitted at the inlet of the pump over a duration T0 is determined by measurement using the water meter. 9. The method of monitoring a metering pump as claimed in claim 7, wherein the volume of water admitted at the inlet of the pump over a duration T0 is determined by an estimation made by the means of counting the cycles of the hydraulic motor. 10. The method of monitoring a metering pump as claimed in claim 7, wherein the variation in volume of product in the container over a duration T0 is determined by measurement using the probe for measuring the level in the container. 11. The method of monitoring a metering pump as claimed in claim 7, wherein the variation in volume of product in the container over a duration T0 is determined by estimation using the means for detecting the variation in pressure in the nozzle. 12. The method of monitoring a metering pump as claimed in claim 7, wherein the flow rate of water at the inlet of the metering pump is comprised between 5 l/h and 30 m3/h, the flow rate in the nozzle being comprised between 0.02 l/h and 600 l/h. 13. The method of monitoring a metering pump as claimed in claim 7, wherein an alarm is triggered in the event of nonconformity in the comparison steps. 14. A method for monitoring a metering pump employing a proportional metering device as claimed in claim 1, said device comprising a means of counting cycles of the hydraulic motor and an inlet water meter at the inlet of the metering pump, said method comprising: a step during which, with the pump running, the volume of water admitted at the inlet of the pump over a duration T0 is measured using the water meter,a step during which the volume of water admitted at the inlet of the pump over the duration T0 is estimated from the number of cycles counted for the hydraulic motor,a later step in which the estimated value of the volume of water admitted at the inlet of the pump over the duration T0 is compared with the measured value. 15. A method for monitoring a metering pump employing a proportional metering device as claimed in claim 1, said device comprising a means of counting cycles of the hydraulic motor, said method comprising: a step during which the number of cycles of the hydraulic motor with the pump running is counted,a step during which the number of intake cycles is determined using the means of detecting variations in pressure in the nozzle,a later step in which the number of cycles of the hydraulic motor is compared with the number of intake cycles. 16. A method of monitoring a metering pump employing a proportional metering device as claimed in claim 1, said method comprising: a step during which the position of the intake volume adjustment mechanism is measured,a step during which, with the pump running, the variation in volume of product in the container is estimated over a duration T0 and using the means of detecting variations in pressure in the nozzle. 17. The method of monitoring a metering pump as claimed in claim 16, further comprising: a step during which, with the pump running, the variation in volume of product in the container is measured with the probe over a duration T0,a later step in which the estimated value of product drawn in over the duration T0 is compared with the variation in volume of product in the container.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.