Flow detection system, whole membrane method pharmaceutical water equipment and detection method

Abstract

The invention belongs to the technical field of detection, and particularly relates to flow detection, in particular to a flow detection system, full-membrane-method pharmaceutical water equipment and a detection method.The flow detection system comprises a control module, a first ultrasonic transducer or a second ultrasonic transducer is controlled to emit ultrasonic waves, and the ultrasonic waves are transmitted to the first ultrasonic transducer or the second ultrasonic transducer; the flow in the pipeline is detected through the ultrasonic waves received by the receiver; the control module is further configured to select corresponding working modes according to the frequencies of the first ultrasonic transducer and the second ultrasonic transducer so as to regulate and control the working modes of the first ultrasonic transducer and the second ultrasonic transducer, and then adjustment of the working modes of the two ultrasonic transducers is achieved. The working time of a single ultrasonic transducer is shortened, the heat dissipation time is given, and the situation that flow detection is inaccurate due to the fact that the ultrasonic transducers work for a long time and generate heat is avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of detection, specifically relates to flow detection, and particularly relates to a flow detection system, a full-film pharmaceutical water preparation device, and a detection method. Background Art

[0002] During the preparation of injection water, filling is required. During filling, the flow rate of the water for injection needs to be accurately and continuously detected to avoid the water for injection remaining in the filling equipment for a long time or the filling volume being affected due to inaccurate flow rate. Therefore, it is necessary to detect the flow rate in the pipeline in real time. Usually, an ultrasonic sensor is used for detection. The ultrasonic sensor works relying on the transducer. After the transducer works for a long time, it will heat up. High temperature may cause the piezoelectric material to age, the solder joints to fall off, or the performance of circuit components to decline, thereby resulting in inaccurate detected flow rate.

[0003] Therefore, due to the technical problem that the ultrasonic sensor cannot accurately detect the flow rate after working for a long time, it is necessary to design a flow detection system, a full-film pharmaceutical water preparation device, and a detection method.

[0004] It should be noted that the above information disclosed in this background art part is only used to understand the background art of the concept of this application. Therefore, the above description is not considered as information of the prior art. Summary of the Invention

[0005] The embodiments of the present disclosure at least provide a flow detection system, a full-film pharmaceutical water preparation device, and a detection method.

[0006] In a first aspect, the embodiments of the present disclosure provide a flow detection system, including: a control module, and a first ultrasonic transducer, a second ultrasonic transducer, and a receiver electrically connected to the control module; the first ultrasonic transducer is arranged in the side wall of the pipeline and contacts the liquid in the pipeline; the second ultrasonic transducer is arranged on the side wall of the pipeline and connected to the first ultrasonic transducer; the receiver is arranged in the side wall of the pipeline and contacts the liquid in the pipeline; the control module is configured to control the first ultrasonic transducer or the second ultrasonic transducer to emit ultrasonic waves, and detect the flow rate in the pipeline through the ultrasonic waves received by the receiver; wherein: the control module is further configured to select a corresponding working mode according to the frequencies of the first ultrasonic transducer and the second ultrasonic transducer to regulate the working modes of the first ultrasonic transducer and the second ultrasonic transducer, so as to reduce the working time of a single ultrasonic transducer.

[0007] In an alternative embodiment, the control module is configured to, before the liquid in the pipeline flows through, control the first ultrasonic transducer and the second ultrasonic transducer to work alternately, and according to the receiver, obtain the frequencies corresponding to the ultrasonic waves emitted by the first ultrasonic transducer and the second ultrasonic transducer. When both frequencies are within the preset standard deviation range, the first ultrasonic transducer and the second ultrasonic transducer work in a first mode to detect the flow rate in the pipeline when the liquid flows through the pipeline; In the first working mode, the first ultrasonic transducer and the second ultrasonic transducer work alternately, and the working time of the first ultrasonic transducer is longer than that of the second ultrasonic transducer.

[0008] In an alternative embodiment, the control module is further configured to, in the first working mode, when the first ultrasonic transducer is normal, obtain the total number of times of the frequency data of the second ultrasonic transducer within a preset time, that is, obtain the number of times the second ultrasonic transducer works within the preset time, and the frequency each time the second ultrasonic transducer works. If the proportion of the abnormal frequency times of the second ultrasonic transducer within the preset time in the total number of times is greater than or equal to a first preset proportion, the first ultrasonic transducer and the second ultrasonic transducer enter the third working mode corresponding to the second ultrasonic transducer, that is, the working time of the second ultrasonic transducer is much less than that of the first ultrasonic transducer; If the proportion of the abnormal frequency times of the first ultrasonic transducer within the preset time in the total number of times is less than a second preset proportion, the first ultrasonic transducer is normal.

[0009] In an alternative embodiment, the control module is further configured to, in the first working mode, when the second ultrasonic transducer is normal, obtain the total number of times of the frequency data of the first ultrasonic transducer within a preset time, that is, obtain the number of times the first ultrasonic transducer works within the preset time, and the frequency each time the first ultrasonic transducer works. If the proportion of the abnormal frequency times of the first ultrasonic transducer within the preset time in the total number of times is greater than or equal to a second preset proportion and less than a third preset proportion, the first ultrasonic transducer and the second ultrasonic transducer enter the second working mode, that is, the working time of the second ultrasonic transducer is equal to that of the first ultrasonic transducer; If the proportion of the abnormal frequency times of the second ultrasonic transducer within the preset time in the total number of times is less than the first preset proportion, the second ultrasonic transducer is normal.

[0010] In an alternative embodiment, the control module is further configured to, in the second working mode, when the second ultrasonic transducer is normal, if the proportion of the abnormal frequency times of the first ultrasonic transducer in the total number of times is greater than or equal to a third preset proportion within a preset time, the first ultrasonic transducer and the second ultrasonic transducer enter the third working mode corresponding to the first ultrasonic transducer, that is, the working time of the second ultrasonic transducer is much longer than that of the first ultrasonic transducer.

[0011] In an alternative embodiment, the control module is further configured to calibrate the first ultrasonic transducer and / or the second ultrasonic transducer when the frequency of any one of the first ultrasonic transducer and the second ultrasonic transducer is outside the preset standard deviation range. That is, when the first ultrasonic transducer works, it obtains the frequency through the second ultrasonic transducer, and when the second ultrasonic transducer works, it obtains the frequency through the first ultrasonic transducer. If the frequencies of both do not disappear, and the frequency of the first ultrasonic transducer and / or the second ultrasonic transducer is lower than the preset standard frequency, the frequencies of the first ultrasonic transducer and the second ultrasonic transducer are adjusted down to a value lower than the smaller of the two frequencies, and then the first ultrasonic transducer and the second ultrasonic transducer work in the fourth working mode; In the fourth mode, the first ultrasonic transducer and the second ultrasonic transducer work alternately, and the working time of the first ultrasonic transducer is less than that of the second ultrasonic transducer.

[0012] In an alternative embodiment, the control module is further configured to, if the frequency of the first ultrasonic transducer is lost, sample the frequency of the first ultrasonic transducer continuously for multiple times. If the number of times of signal loss is greater than a preset number and the positions where the loss occurs are the same, the first ultrasonic transducer and the second ultrasonic transducer work in the fourth working mode, and the second ultrasonic transducer works at the position where the first ultrasonic transducer loses its frequency; If the number of times of signal loss is greater than a preset number and the positions where the loss occurs are different, the first ultrasonic transducer and the second ultrasonic transducer work in the third working mode corresponding to the first ultrasonic transducer, that is, the working time of the second ultrasonic transducer is much longer than that of the first ultrasonic transducer; If the number of times of signal loss is less than a preset number, the first ultrasonic transducer and the second ultrasonic transducer work in the fourth working mode.

[0013] In an alternative embodiment, the control module is further configured to, in the fourth operating mode, when the first ultrasonic transducer is normal, obtain the total number of times of the frequency data of the second ultrasonic transducer within a preset time. If the proportion of the abnormal frequency times of the second ultrasonic transducer within the preset time in the total number of times is greater than or equal to a first preset proportion, the first ultrasonic transducer and the second ultrasonic transducer enter the third operating mode corresponding to the second ultrasonic transducer, that is, the working time of the second ultrasonic transducer is much less than the working time of the first ultrasonic transducer. When the second ultrasonic transducer is normal, if the proportion of the abnormal frequency times of the first ultrasonic transducer within the preset time in the total number of times is greater than or equal to a third preset proportion, the first ultrasonic transducer and the second ultrasonic transducer enter the third operating mode corresponding to the first ultrasonic transducer, that is, the working time of the second ultrasonic transducer is much greater than the working time of the first ultrasonic transducer.

[0014] Second, the embodiments of the present disclosure further provide a full-film pharmaceutical water preparation device adopting the above flow detection system, including: A water quality pretreatment system adapted to treat raw water into drinking water; A water quality treatment system connected to the water quality pretreatment system and adapted to treat drinking water into injection water; A flow detection system connected to the outlet pipe of the water quality treatment system and adapted to detect the flow rate in the pipeline.

[0015] Third, the embodiments of the present disclosure further provide a detection method adopting the above flow detection system, including: Emitting ultrasonic waves through the first ultrasonic transducer or the second ultrasonic transducer, and detecting the flow rate in the pipeline by the ultrasonic waves received by the receiver; wherein: Selecting a corresponding operating mode according to the frequencies of the first ultrasonic transducer and the second ultrasonic transducer to regulate the operating modes of the first ultrasonic transducer and the second ultrasonic transducer, so as to reduce the working time of a single ultrasonic transducer.

[0016] The beneficial effects of the present invention are as follows. The present flow detection system includes a control module, a first ultrasonic transducer, a second ultrasonic transducer, and a receiver that are electrically connected to the control module. The first ultrasonic transducer is disposed in the side wall of the pipeline and contacts the liquid in the pipeline. The second ultrasonic transducer is disposed on the side wall of the pipeline and is connected to the first ultrasonic transducer. The receiver is disposed in the side wall of the pipeline and contacts the liquid in the pipeline. The control module is configured to control the first ultrasonic transducer or the second ultrasonic transducer to emit ultrasonic waves, and detect the flow rate in the pipeline by the ultrasonic waves received by the receiver. Among them, the control module is further configured to select a corresponding working mode according to the frequencies of the first ultrasonic transducer and the second ultrasonic transducer to regulate the working modes of the first ultrasonic transducer and the second ultrasonic transducer, thereby realizing the adjustment of the working modes of the two ultrasonic transducers, reducing the working time of a single ultrasonic transducer, giving a heat dissipation time, and avoiding inaccurate flow detection caused by the heat generated by the ultrasonic transducer due to long-term operation.

[0017] Other features and advantages of the present invention will be described in the following specification, and, in part, will be obvious from the specification, or will be understood by implementing the present invention. The objectives and other advantages of the present invention are achieved and obtained by the structures specifically pointed out in the specification and the drawings.

[0018] To make the above objectives, features, and advantages of the present invention more obvious and understandable, specific preferred embodiments are hereby exemplified and described in detail in conjunction with the accompanying drawings as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 It is a structural diagram of a flow detection system provided by an embodiment of the present disclosure; Figure 2 It is a schematic structural diagram of a flow detection system provided by an embodiment of the present disclosure; Figure 3 It is a schematic block diagram of a flow detection system provided by an embodiment of the present disclosure; Figure 4 It is a waveform schematic diagram provided by an embodiment of the present disclosure; Figure 5 It is a schematic diagram of mechanical coupling interference provided by an embodiment of the present disclosure; Figure 6Schematic diagram of the pipeline of a pharmaceutical water equipment using the full film method provided by the embodiments of the present disclosure.

[0021] In the figure: 1 Pipeline, 11 First ultrasonic transducer, 12 Second ultrasonic transducer, 13 Receiver; 2 Water quality pretreatment system; 3 Water quality treatment system. Specific implementation mode

[0022] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0023] As used herein, phrases such as "in one embodiment", "according to one embodiment", "in some embodiments", etc. generally refer to the fact that the specific features, structures or characteristics after the phrase can be included in at least one embodiment of the present disclosure. Therefore, a specific feature, structure or characteristic can be included in more than one embodiment of the present disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, terms such as "example", "exemplary", etc. are used "for the purpose of serving as an example, instance or illustration. Any embodiment, aspect or design described herein as "example" or "exemplary" is not necessarily construed as being preferred or superior to other embodiments, aspects or designs. Instead, the use of terms such as "example", "exemplary", etc. is intended to present concepts in a specific manner.

[0024] During the preparation of injection water, filling needs to be carried out. During filling, it is necessary to accurately and continuously detect the flow rate of the water for injection to avoid the long-term retention of the water for injection in the filling equipment or the influence on the filling volume due to inaccurate flow rate. Therefore, it is necessary to detect the flow rate in the pipeline in real time. Usually, an ultrasonic sensor is used for detection. The ultrasonic sensor works relying on the transducer. However, the inventor found that the transducer will heat up after long-term operation, and the high temperature may cause the aging of the piezoelectric material, the detachment of the solder joints or the degradation of the performance of the circuit components, thereby resulting in inaccurate detection of the flow rate.

[0025] All the defects existing in the above solutions are the results obtained by the inventor through practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed by the present disclosure in this article for the above problems should be the contributions made by the inventor to the present disclosure during the process of the present disclosure.

[0026] It should be noted that like reference numerals and letters refer to like items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] The following will, with reference to the accompanying drawings, elaborate on some embodiments of the present invention. Without conflict, the following embodiments and the features in the embodiments may be combined with each other.

[0028] As Figure 1 、 Figure 2 and Figure 3 shown, at least one disclosed embodiment provides a flow detection system, including: a control module, and a first ultrasonic transducer 11, a second ultrasonic transducer 12, and a receiver 13 that are electrically connected to the control module; the first ultrasonic transducer 11 is disposed in the sidewall of the pipeline 1 and contacts the liquid in the pipeline 1; the second ultrasonic transducer 12 is disposed in the sidewall of the pipeline 1 and is connected to the first ultrasonic transducer 11; the receiver 13 is disposed in the sidewall of the pipeline 1 and contacts the liquid in the pipeline 1; the control module is configured to control the first ultrasonic transducer 11 or the second ultrasonic transducer 12 to emit ultrasonic waves, and detect the flow rate in the pipeline 1 through the ultrasonic waves received by the receiver 13; wherein: the control module is further configured to select a corresponding working mode according to the frequencies of the first ultrasonic transducer 11 and the second ultrasonic transducer 12 to regulate the working modes of the first ultrasonic transducer 11 and the second ultrasonic transducer 12, thereby realizing the adjustment of the working modes of the two ultrasonic transducers, reducing the working time of a single ultrasonic transducer, giving a heat dissipation time, and avoiding inaccurate flow detection caused by the ultrasonic transducer heating up due to long-term operation.

[0029] In this embodiment, the control module is connected to the first ultrasonic transducer 11, the second ultrasonic transducer 12, and the receiver 13 through a communication cable. The control module sends control signals to the first ultrasonic transducer 11 and the second ultrasonic transducer 12, controls the first ultrasonic transducer 11 and the second ultrasonic transducer 12 to emit ultrasonic waves, and calculates the flow velocity and flow rate in the pipeline 1 by receiving the ultrasonic wave signals through the receiver 13. At the same time, the frequencies of the first ultrasonic transducer 11 and the second ultrasonic transducer 12 can be obtained according to the signals.

[0030] In this embodiment, when the diameter of the pipeline 1 is greater than a preset pipe diameter, for example, when the pipeline 1 is an 8-inch pipe or above, the straight line where the first ultrasonic transducer 11 and the receiver 13 are located is parallel to the radial direction of the pipeline 1; when the diameter of the pipeline 1 is less than the preset pipe diameter, for example, when the pipeline 1 is below an 8-inch pipe, the straight line where the first ultrasonic transducer 11 and the receiver 13 are located is not parallel to the radial direction of the pipeline 1, which is convenient for the installation of the receiver 13 and the first ultrasonic transducer 11.

[0031] In this embodiment, one side of the first ultrasonic transducer 11 is in contact with the liquid in the pipeline 1, and this side is close to the inner wall of the pipeline 1 to avoid affecting the flow of the liquid in the pipeline 1; similarly, one side of the receiver 13 is in contact with the liquid in the pipeline 1, and this side is close to the inner wall of the pipeline 1 to avoid affecting the flow of the liquid in the pipeline 1.

[0032] In this embodiment, in each working mode, the first ultrasonic transducer 11 and the second ultrasonic transducer 12 work alternately, so that when one ultrasonic transducer works, the other ultrasonic transducer does not work. The non-working ultrasonic transducer can be cooled to avoid the influence of the temperature rise caused by the long-term work of a single ultrasonic transducer on the accuracy of flow detection.

[0033] In an optional implementation manner, the control module is configured to control the first ultrasonic transducer 11 and the second ultrasonic transducer 12 to work alternately before the liquid in the pipeline 1 flows through, obtain the frequencies corresponding to the ultrasonic waves emitted by the first ultrasonic transducer 11 and the second ultrasonic transducer 12 according to the receiver 13, and when both frequencies are within the preset standard deviation range, the first ultrasonic transducer 11 and the second ultrasonic transducer 12 work in the first mode to detect the flow rate in the pipeline 1 when there is liquid flowing through the pipeline 1; In this embodiment, both the first ultrasonic transducer 11 and the second ultrasonic transducer 12 can have a best frequency at the factory, and the best frequencies of the two can be the same. Before starting to prepare injection water each time, the first ultrasonic transducer 11 and the second ultrasonic transducer 12 can be started to judge whether they are normal, and when they are abnormal, the first ultrasonic transducer 11 and the second ultrasonic transducer 12 are calibrated.

[0034] In the first working mode, the first ultrasonic transducer 11 and the second ultrasonic transducer 12 work alternately, and the working time of the first ultrasonic transducer 11 is longer than that of the second ultrasonic transducer 12.

[0035] In this embodiment, in the first working mode, the working time of the first ultrasonic transducer 11 accounts for 70% of the total time, and the working time of the second ultrasonic transducer 12 accounts for 30% of the total time.

[0036] In an alternative embodiment, the control module is further configured to, in the first operating mode, when the first ultrasonic transducer 11 is normal, obtain the total number of times of the frequency data of the second ultrasonic transducer 12 within a preset time, that is, obtain the number of times the second ultrasonic transducer 12 operates within the preset time, and the frequency each time the second ultrasonic transducer 12 operates. If the proportion of the abnormal frequency times of the second ultrasonic transducer 12 within the preset time in the total number of times is greater than or equal to the first preset proportion, the first ultrasonic transducer 11 and the second ultrasonic transducer 12 enter the third operating mode corresponding to the second ultrasonic transducer 12, that is, the operating time of the second ultrasonic transducer 12 is much less than the operating time of the first ultrasonic transducer 11; if the proportion of the abnormal frequency times of the first ultrasonic transducer 11 within the preset time in the total number of times is less than the second preset proportion, the first ultrasonic transducer 11 is normal.

[0037] In this embodiment, the operating mode of the second ultrasonic transducer 12 is to start and stop at fixed time intervals. Each time it starts, it emits ultrasonic waves at a certain frequency. In the first operating mode, after the second ultrasonic transducer 12 starts to operate, the number of times the second ultrasonic transducer 12 starts can be obtained within a preset time period, and the frequency after each start of the second ultrasonic transducer 12 can be obtained; when the frequency of the second ultrasonic transducer 12 is different from the corresponding preset value, this frequency is determined as an abnormal frequency, and the number of abnormal frequencies is recorded. The abnormal frequency can be, for example, Figure 4 as shown, it can be the absence of peaks and valleys, as shown by a1 and a2. The abnormal frequency can also be, for example, Figure 4 the disappearance of the waveform as shown by b in

[0038] In this embodiment, since the second ultrasonic transducer 12 is arranged on the outer wall of the pipeline 1 and does not contact the liquid, there are fewer influencing factors on it during the flow rate detection. Therefore, by setting the first preset proportion, it can be directly determined whether the performance of the second ultrasonic transducer 12 is affected.

[0039] In this embodiment, if the proportion of the abnormal frequency times of the second ultrasonic transducer 12 within the preset time in the total number of times is greater than or equal to the first preset proportion, it is determined at this time that the performance of the second ultrasonic transducer 12 has been greatly affected.

[0040] In an alternative embodiment, the control module is further configured to, in the first working mode, when the second ultrasonic transducer 12 is normal, obtain the total number of times of the frequency data of the first ultrasonic transducer 11 within a preset time, that is, obtain the number of working times of the first ultrasonic transducer 11 within the preset time, and the frequency each time the first ultrasonic transducer 11 works. If the proportion of the abnormal frequency times of the first ultrasonic transducer 11 within the preset time in the total number of times is greater than or equal to a second preset proportion and less than a third preset proportion, the first ultrasonic transducer 11 and the second ultrasonic transducer 12 enter the second working mode, that is, the working time of the second ultrasonic transducer 12 is equal to the working time of the first ultrasonic transducer 11; if the proportion of the abnormal frequency times of the second ultrasonic transducer 12 within the preset time in the total number of times is less than the first preset proportion, the second ultrasonic transducer 12 is normal.

[0041] In this embodiment, the working mode of the first ultrasonic transducer 11 is to start and stop at fixed time intervals. Each time it starts, it emits ultrasonic waves at a certain frequency. In the first working mode, after the first ultrasonic transducer 11 starts to work, the number of starts of the first ultrasonic transducer 11 can be obtained within a preset time period, and the frequency after each start of the first ultrasonic transducer 11; when the frequency of the first ultrasonic transducer 11 is different from the corresponding preset value, this frequency is determined as an abnormal frequency, and the number of abnormal frequencies is recorded.

[0042] In this embodiment, since the first ultrasonic transducer 11 is arranged inside the side wall of the pipeline 1 and is in contact with the liquid in the pipeline 1, it will be affected by water hammer and the like generated when the liquid flows through the pipeline. Therefore, the first ultrasonic transducer 11 is more likely to age and cause a decline in performance. Therefore, a third preset proportion and a second preset proportion are set to subdivide the performance of the second ultrasonic transducer 12. The decline in performance will cause the ultrasonic transducer to be more likely to heat up, and it is more likely to cause inaccurate flow detection due to heating.

[0043] In this embodiment, in the second working mode, the working time of the first ultrasonic transducer 11 accounts for 50% of the total time, and the working time of the second ultrasonic transducer 12 accounts for 50% of the total time. At this time, compared with the first working mode, the first ultrasonic transducer 11 has more time to stop and dissipate heat.

[0044] In an alternative embodiment, the control module is further configured to, in the second working mode, when the second ultrasonic transducer 12 is normal, if the proportion of the abnormal frequency times of the first ultrasonic transducer 11 within the preset time in the total number of times is greater than or equal to the third preset proportion, the first ultrasonic transducer 11 and the second ultrasonic transducer 12 enter the third working mode corresponding to the first ultrasonic transducer 11, that is, the working time of the second ultrasonic transducer 12 is much greater than the working time of the first ultrasonic transducer 11.

[0045] In this embodiment, in the third working mode corresponding to the first ultrasonic transducer 11, the working time of the first ultrasonic transducer 11 accounts for 10% of the total time, and the working time of the second ultrasonic transducer 12 accounts for 90% of the total time; in the third working mode corresponding to the second ultrasonic transducer 12, the working time of the second ultrasonic transducer 12 accounts for 10% of the total time, and the working time of the first ultrasonic transducer 11 accounts for 90% of the total time.

[0046] In this embodiment, when both the first ultrasonic transducer 11 and the second ultrasonic transducer 12 are abnormal, an alarm is required to replace both ultrasonic transducers.

[0047] In an alternative embodiment, the control module is further configured to calibrate the first ultrasonic transducer 11 and / or the second ultrasonic transducer 12 when any frequency of the first ultrasonic transducer 11 and the second ultrasonic transducer 12 is outside the preset standard deviation range. That is, when the first ultrasonic transducer 11 works, it obtains the frequency through the second ultrasonic transducer 12, and when the second ultrasonic transducer 12 works, it obtains the frequency through the first ultrasonic transducer 11. If the frequencies of both do not disappear, and the frequency of the first ultrasonic transducer 11 and / or the second ultrasonic transducer 12 is lower than the preset standard frequency, then the frequencies of the first ultrasonic transducer 11 and the second ultrasonic transducer 12 are lowered to below the smaller value of the two frequencies, and then the first ultrasonic transducer 11 and the second ultrasonic transducer 12 work in the fourth working mode; in the fourth mode, the first ultrasonic transducer 11 and the second ultrasonic transducer 12 work alternately, and the working time of the first ultrasonic transducer 11 is less than the working time of the second ultrasonic transducer 12.

[0048] In this embodiment, since the performance of the first ultrasonic transducer 11 and the second ultrasonic transducer 12 will be lower than the performance at the time of leaving the factory due to aging, for example, the frequencies that both can reach will be less than the best frequency at the time of leaving the factory, it is necessary to judge and calibrate the performance of the first ultrasonic transducer 11 and the second ultrasonic transducer 12 before each preparation of water for injection.

[0049] In this embodiment, when both the first ultrasonic transducer 11 and the second ultrasonic transducer 12 need to be calibrated, the first ultrasonic transducer 11 is calibrated first, and then the second ultrasonic transducer 12 is calibrated.

[0050] In this embodiment, since the first ultrasonic transducer 11 and the second ultrasonic transducer 12 are connected together, when one of them emits an ultrasonic wave, it can be received by the other.

[0051] In this embodiment, since the connection mode between the first ultrasonic transducer 11 and the second ultrasonic transducer 12 is fixed and the medium between them moves, it is possible to determine whether the received frequency is lost or abnormal.

[0052] In this embodiment, when the frequency of one of the ultrasonic transducers decreases, the frequencies of both ultrasonic transducers need to be lowered.

[0053] In an alternative embodiment, the control module is further configured to, if the frequency of the first ultrasonic transducer 11 is lost, sample the frequency of the first ultrasonic transducer 11 continuously for multiple times. If the number of signal losses is greater than a preset number and the positions where the losses occur are the same, the first ultrasonic transducer 11 and the second ultrasonic transducer 12 operate in the fourth working mode, and the second ultrasonic transducer 12 operates at the position where the first ultrasonic transducer 11 loses its frequency. If the number of signal losses is greater than the preset number and the positions where the losses occur are different, the first ultrasonic transducer 11 and the second ultrasonic transducer 12 operate in the third working mode corresponding to the first ultrasonic transducer 11, that is, the working time of the second ultrasonic transducer 12 is much longer than that of the first ultrasonic transducer 11. If the number of signal losses is less than the preset number, the first ultrasonic transducer 11 and the second ultrasonic transducer 12 operate in the fourth working mode.

[0054] In this embodiment, similarly, when the second ultrasonic transducer 12 is lost, the first ultrasonic transducer 11 operates at the corresponding position.

[0055] In this embodiment, after a signal loss occurs, continuous acquisitions are performed. If the positions of the signal losses are the same, the abnormality consistency of the first ultrasonic transducer 11 is judged. Therefore, during the subsequent flow detection process, the second ultrasonic transducer 12 is used for detection at the position where the first ultrasonic transducer 11 is lost, and an alarm can also be issued to remind the staff to repair or replace the first ultrasonic transducer 11 during production downtime.

[0056] In this embodiment, if the number of signal losses is less than the preset number, it is determined at this time that the abnormality of the first ultrasonic transducer 11 is sporadic.

[0057] In this embodiment, in the fourth working mode, the working time of the first ultrasonic transducer accounts for 30% of the total time, and the working time of the second ultrasonic transducer accounts for 70% of the total time. In an alternative embodiment, the control module is further configured to, in the fourth operating mode, when the first ultrasonic transducer 11 is normal, obtain the total number of times of the frequency data of the second ultrasonic transducer 12 within a preset time. If the proportion of the abnormal frequency times of the second ultrasonic transducer 12 in the total number of times within the preset time is greater than or equal to a first preset proportion, the first ultrasonic transducer 11 and the second ultrasonic transducer 12 enter the third operating mode corresponding to the second ultrasonic transducer 12, that is, the working time of the second ultrasonic transducer 12 is much less than the working time of the first ultrasonic transducer 11; when the second ultrasonic transducer 12 is normal, if the proportion of the abnormal frequency times of the first ultrasonic transducer 11 in the total number of times within the preset time is greater than or equal to a third preset proportion, the first ultrasonic transducer 11 and the second ultrasonic transducer 12 enter the third operating mode corresponding to the first ultrasonic transducer 11, that is, the working time of the second ultrasonic transducer 12 is much greater than the working time of the first ultrasonic transducer 11.

[0058] As Figure 5 shown, in this embodiment, the frequency drift caused by mechanical coupling is closely related to the frequency of the ultrasonic transducer (such as piezoelectric ceramics) and its mechanical boundary conditions. After the first ultrasonic transducer 11 and the second ultrasonic transducer 12 stop operating, the vibration generated due to inertia will generate axial stress or shear force on the other ultrasonic transducer through a fixed bracket or the like, affecting the vibration frequency of the other ultrasonic transducer. Therefore, in the selection, the operating frequencies of the two ultrasonic transducers need to be greater than the required frequency demand, so as to use them at a reduced frequency, avoid the interference caused by mechanical coupling, and extend the life of the overall sensor; after the ultrasonic transducer operates at a reduced frequency and meets the required frequency, the excess energy due to the reduced frequency of the ultrasonic transducer can reduce the influence brought by the vibration generated by the other ultrasonic transducer due to inertia.

[0059] In this embodiment, by reducing the frequency, the amplitude of the ultrasonic transducer can be increased to reduce the influence brought by the vibration generated by the other ultrasonic transducer due to inertia.

[0060] As Figure 6 shown, at least one other disclosed embodiment further provides a full-film pharmaceutical water preparation device using the above flow detection system, including: a water quality pretreatment system 2, adapted to treat raw water into drinking water; a water quality treatment system 3, connected to the water quality pretreatment system 2, adapted to treat drinking water into injection water; and a flow detection system, connected to the outlet pipe of the water quality treatment system 3, adapted to detect the flow rate in the pipeline 1.

[0061] In this embodiment, the water quality treatment system 3 can be connected to the subsequent filling equipment through the pipeline 1. The flow rate in the pipeline 1 can be detected in real time and accurately through the flow rate detection system. When the flow rate is abnormal, the staff can be notified for regulation, maintenance, etc.

[0062] At least one other disclosed embodiment also provides a detection method using the above flow rate detection system, including: emitting ultrasonic waves through the first ultrasonic transducer 11 or the second ultrasonic transducer 12, and detecting the flow rate in the pipeline 1 through the ultrasonic waves received by the receiver 13; wherein: selecting a corresponding working mode according to the frequencies of the first ultrasonic transducer 11 and the second ultrasonic transducer 12 to regulate the working modes of the first ultrasonic transducer 11 and the second ultrasonic transducer 12, so as to reduce the working time of a single ultrasonic transducer.

[0063] In summary, this flow rate detection system includes: a control module, and a first ultrasonic transducer 11, a second ultrasonic transducer 12, and a receiver 13 electrically connected to the control module; the first ultrasonic transducer 11 is arranged in the side wall of the pipeline 1 and contacts the liquid in the pipeline 1; the second ultrasonic transducer 12 is arranged on the side wall of the pipeline 1 and connected to the first ultrasonic transducer 11; the receiver 13 is arranged in the side wall of the pipeline 1 and contacts the liquid in the pipeline 1; the control module is configured to control the first ultrasonic transducer 11 or the second ultrasonic transducer 12 to emit ultrasonic waves, and detect the flow rate in the pipeline 1 through the ultrasonic waves received by the receiver 13; wherein: the control module is further configured to select a corresponding working mode according to the frequencies of the first ultrasonic transducer 11 and the second ultrasonic transducer 12 to regulate the working modes of the first ultrasonic transducer 11 and the second ultrasonic transducer 12, thereby realizing the adjustment of the working modes of the two ultrasonic transducers, reducing the working time of a single ultrasonic transducer, giving a heat dissipation time, and avoiding inaccurate flow rate detection caused by the ultrasonic transducer heating due to long-term operation.

[0064] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0065] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. These are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, terms such as "first", "second" and other numerical terms used herein do not imply an order or sequence unless expressly indicated in the text. Thus, the first element, component, region, layer or section discussed above may be referred to as the second element, component, region, layer or section without departing from the teachings of the exemplary embodiments.

[0066] Spatially relative terms, such as "inner", "outer", "beneath", "below", "lower", "above", "upper", etc., may be used herein to facilitate describing one element or feature's relationship to another element or feature as illustrated in the figures. In addition to the orientation depicted in the figures, spatially relative terms are intended to encompass different orientations of the device in use or operation. For example, if the device in the figures is turned over, an element described as "beneath" or "below" another element or feature will then be oriented "above" the other element or feature. Thus, the exemplary term "beneath" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0067] Based on the above inspiration from the ideal embodiments of the present invention, through the above description, relevant staff can, without departing from the technical idea of the present invention, make various changes and modifications. The technical scope of the present invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A flow detection system, characterized in that, Including: A control module, a first ultrasonic transducer (11), a second ultrasonic transducer (12) and a receiver (13) electrically connected to the control module; The first ultrasonic transducer (11) is arranged in the side wall of the pipeline (1) and contacts the liquid in the pipeline (1); The second ultrasonic transducer (12) is arranged on the side wall of the pipeline (1) and connected to the first ultrasonic transducer (11); The receiver (13) is arranged in the side wall of the pipeline (1) and contacts the liquid in the pipeline (1); The control module is configured to control the first ultrasonic transducer (11) or the second ultrasonic transducer (12) to emit ultrasonic waves, and detect the flow rate in the pipeline (1) through the ultrasonic waves received by the receiver (13); and, The control module is further configured to select a corresponding working mode according to the frequencies of the first ultrasonic transducer (11) and the second ultrasonic transducer (12) to regulate the working modes of the first ultrasonic transducer (11) and the second ultrasonic transducer (12), so as to reduce the working time of a single ultrasonic transducer.

2. The flow rate detection system according to claim 1, wherein: The control module is configured to, before the liquid in the pipeline (1) flows through, control the first ultrasonic transducer (11) and the second ultrasonic transducer (12) to work alternately, obtain the frequencies corresponding to the ultrasonic waves emitted by the first ultrasonic transducer (11) and the second ultrasonic transducer (12) according to the receiver (13), and when both frequencies are within a preset standard deviation range, the first ultrasonic transducer (11) and the second ultrasonic transducer (12) work in a first mode to detect the flow rate in the pipeline (1) when there is liquid flowing through the pipeline (1); In the first working mode, the first ultrasonic transducer (11) and the second ultrasonic transducer (12) work alternately, and the working time of the first ultrasonic transducer (11) is longer than that of the second ultrasonic transducer (12).

3. The flow rate detection system according to claim 2, wherein: The control module is further configured to, in the first working mode, when the first ultrasonic transducer (11) is normal, obtain the total number of times of the frequency data of the second ultrasonic transducer (12) within a preset time, that is, obtain the number of times the second ultrasonic transducer (12) works within a preset time, and the frequency each time the second ultrasonic transducer (12) works. If the proportion of the abnormal frequency times of the second ultrasonic transducer (12) within the preset time in the total number of times is greater than or equal to a first preset proportion, the first ultrasonic transducer (11) and the second ultrasonic transducer (12) enter a third working mode corresponding to the second ultrasonic transducer (12), that is, the working time of the second ultrasonic transducer (12) is much less than that of the first ultrasonic transducer (11); If the proportion of the abnormal frequency times of the first ultrasonic transducer (11) within the preset time in the total number of times is less than a second preset proportion, the first ultrasonic transducer (11) is normal.

4. The flow rate detection system according to claim 2, wherein: The control module is further configured to, in the first working mode, when the second ultrasonic transducer (12) is normal, obtain the total number of times of the frequency data of the first ultrasonic transducer (11) within a preset time, that is, obtain the number of working times of the first ultrasonic transducer (11) within the preset time, and the frequency each time the first ultrasonic transducer (11) works. If the proportion of the abnormal frequency times of the first ultrasonic transducer (11) within the preset time in the total number of times is greater than or equal to a second preset proportion and less than a third preset proportion, the first ultrasonic transducer (11) and the second ultrasonic transducer (12) enter the second working mode, that is, the working time of the second ultrasonic transducer (12) is equal to the working time of the first ultrasonic transducer (11). If the proportion of the abnormal frequency times of the second ultrasonic transducer (12) within the preset time in the total number of times is less than the first preset proportion, the second ultrasonic transducer (12) is normal.

5. The flow detection system according to claim 4, characterized in that: The control module is further configured to, in the second working mode, when the second ultrasonic transducer (12) is normal, if the proportion of the abnormal frequency times of the first ultrasonic transducer (11) within the preset time in the total number of times is greater than or equal to the third preset proportion, the first ultrasonic transducer (11) and the second ultrasonic transducer (12) enter the third working mode corresponding to the first ultrasonic transducer (11), that is, the working time of the second ultrasonic transducer (12) is much greater than the working time of the first ultrasonic transducer (11).

6. The flow detection system according to claim 2, characterized in that: The control module is further configured to, when the frequency of any one of the first ultrasonic transducer (11) and the second ultrasonic transducer (12) is outside the preset standard deviation range, calibrate the deviated first ultrasonic transducer (11) and / or the second ultrasonic transducer (12), that is, obtain the frequency through the second ultrasonic transducer (12) when the first ultrasonic transducer (11) works, and obtain the frequency through the first ultrasonic transducer (11) when the second ultrasonic transducer (12) works. If the frequencies of both do not disappear, and the frequency of the first ultrasonic transducer (11) and / or the second ultrasonic transducer (12) is lower than the preset standard frequency, the frequencies of the first ultrasonic transducer (11) and the second ultrasonic transducer (12) are lowered to below the smaller value of the two frequencies, and then the first ultrasonic transducer (11) and the second ultrasonic transducer (12) work in the fourth working mode; In the fourth mode, the first ultrasonic transducer (11) and the second ultrasonic transducer (12) work alternately, and the working time of the first ultrasonic transducer (11) is less than the working time of the second ultrasonic transducer (12).

7. The flow detection system according to claim 6, characterized in that: The control module is further configured to, if the frequency of the first ultrasonic transducer (11) is lost, sample the frequency of the first ultrasonic transducer (11) continuously for multiple times. If the number of signal losses is greater than a preset number and the positions where the losses occur are the same, the first ultrasonic transducer (11) and the second ultrasonic transducer (12) operate in the fourth working mode, and the second ultrasonic transducer (12) operates at the position where the first ultrasonic transducer (11) loses its frequency; If the number of signal losses is greater than the preset number and the positions where the losses occur are different, the first ultrasonic transducer (11) and the second ultrasonic transducer (12) operate in the third working mode corresponding to the first ultrasonic transducer (11), that is, the working time of the second ultrasonic transducer (12) is much longer than that of the first ultrasonic transducer (11); If the number of signal losses is less than the preset number, the first ultrasonic transducer (11) and the second ultrasonic transducer (12) operate in the fourth working mode.

8. The flow detection system according to claim 7, wherein: The control module is further configured to, in the fourth working mode, when the first ultrasonic transducer (11) is normal, obtain the total number of times of the frequency data of the second ultrasonic transducer (12) within a preset time. If the proportion of the abnormal frequency times of the second ultrasonic transducer (12) in the total number of times within the preset time is greater than or equal to a first preset proportion, the first ultrasonic transducer (11) and the second ultrasonic transducer (12) enter the third working mode corresponding to the second ultrasonic transducer (12), that is, the working time of the second ultrasonic transducer (12) is much shorter than that of the first ultrasonic transducer (11); When the second ultrasonic transducer (12) is normal, if the proportion of the abnormal frequency times of the first ultrasonic transducer (11) in the total number of times within the preset time is greater than or equal to a third preset proportion, the first ultrasonic transducer (11) and the second ultrasonic transducer (12) enter the third working mode corresponding to the first ultrasonic transducer (11), that is, the working time of the second ultrasonic transducer (12) is much longer than that of the first ultrasonic transducer (11).

9. A pharmaceutical water equipment with a full membrane method that adopts the flow detection system as described in claim 1, characterized in that, Comprising: A water quality pretreatment system (2) adapted to treat raw water into drinking water; A water quality treatment system (3) connected to the water quality pretreatment system (2) and adapted to treat drinking water into injection water; The flow detection system is connected to the outlet pipe of the water quality treatment system (3) and is adapted to detect the flow rate in the pipeline (1).

10. A detection method using the flow detection system as described in claim 1, characterized in that, Comprising: The flow rate in the pipeline (1) is detected by emitting ultrasonic waves through the first ultrasonic transducer (11) or the second ultrasonic transducer (12) and receiving the ultrasonic waves through the receiver (13); wherein: The corresponding working mode is selected according to the frequencies of the first ultrasonic transducer (11) and the second ultrasonic transducer (12) to regulate the working modes of the first ultrasonic transducer (11) and the second ultrasonic transducer (12), so as to reduce the working time of a single ultrasonic transducer.

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