Liquid medicine flow measuring device

Abstract

A liquid medicine flow measuring device comprises a main pipeline which comprises a first liquid inlet and a first liquid outlet; the sample measuring branch is communicated with the main pipeline and comprises a sample measuring container, the sample measuring container is provided with a first reference liquid level position and a second reference liquid level position, and the first reference liquid level position is higher than the second reference liquid level position; the first liquid level sensor is arranged on the side wall of the first reference liquid level position of the sample measuring container; and the second liquid level sensor is arranged on the side wall of the second reference liquid level position of the sample measuring container. During liquid medicine flow measurement, liquid medicine flows into the sample measuring container, the liquid medicine volume between the second reference liquid level position and the first reference liquid level position is fixed, liquid medicine flow data are obtained by calculating the time required for the liquid medicine to reach the first reference liquid level position from the second reference liquid level position, timeliness is improved, and the accuracy of liquid medicine flow measurement is improved. The labor input cost and the chemical pollution risk are reduced; the first liquid level sensor and the second liquid level sensor are adopted, so that the measurement sensitivity is improved, and the liquid medicine flow measurement accuracy is improved.

Description

TECHNICAL FIELD

[0001] The embodiment of the utility model relates to the field of liquid flow measurement, especially relates to a liquid flow measurement device. BACKGROUND

[0002] In the process of liquid adding, in order to meet the flow demand of liquid under different process requirements, the flow of liquid needs to be detected.

[0003] The existing liquid flow measurement method is mostly manual measurement, and there are problems such as long time, high labor cost and high chemical pollution risk, and abnormal fluctuation of liquid flow cannot be found in time.

[0004] Therefore, how to improve the measurement precision, reduce the labor cost and chemical pollution risk in the process of liquid flow measurement has become a problem to be solved. UTILITY MODEL CONTENT

[0005] The embodiment of the utility model solves the problem of providing a liquid flow measurement device, improving the liquid flow measurement precision, reducing the labor cost and chemical pollution risk, and realizing real-time measurement.

[0006] In order to solve the above problems, the utility model embodiment provides a liquid flow measurement device, which comprises: a main pipeline, the main pipeline comprises a first liquid inlet and a first liquid outlet; a sample branch, which is communicated with the main pipeline, the sample branch comprises: a sample container, the sample container has a first reference liquid level position and a second reference liquid level position, the first reference liquid level position is higher than the second reference liquid level position; a first liquid level sensor is arranged on the side wall of the first reference liquid level position of the sample container; a second liquid level sensor is arranged on the side wall of the second reference liquid level position of the sample container.

[0007] Optionally, the sample container comprises a transparent container wall; the first liquid level sensor and the second liquid level sensor are arranged on the outer wall of the transparent container wall.

[0008] Optionally, the communication position of the sample branch and the main pipeline is located between the first liquid inlet and the first liquid outlet; the sample branch further comprises a bypass sampling pipeline, the bypass sampling pipeline comprises a second liquid inlet and a second liquid outlet, the second liquid inlet is communicated with the main pipeline, the second liquid outlet of the bypass sampling pipeline is arranged in the interior of the sample container, and the position of the second liquid outlet of the bypass sampling pipeline is lower than the position of the second liquid level sensor.

[0009] Optionally, the bottom of the sampling container is provided with a liquid discharge port; the sampling branch further comprises a liquid discharge pipeline, the liquid discharge pipeline comprises a third liquid inlet and a third liquid outlet, the third liquid inlet is communicated with the liquid discharge port of the sampling container, and the liquid discharge pipeline is used for discharging the liquid in the sampling container after the sampling container completes sampling.

[0010] Optionally, the communication position of the sampling branch and the main pipeline is located between the first liquid inlet and the first liquid outlet; the sampling branch further comprises a bypass sampling pipeline, the bypass sampling pipeline comprises a second liquid inlet and a second liquid outlet, the second liquid inlet is communicated with the main pipeline, and the second liquid outlet of the bypass sampling pipeline is communicated with the sampling container; a first valve is arranged on the bypass sampling pipeline and used for controlling opening and closing of the bypass sampling pipeline; a second valve is arranged on the liquid discharge pipeline and used for controlling opening and closing of the liquid discharge pipeline; and a third valve is arranged on the main pipeline, the third valve is located downstream of the communication position of the main pipeline and the bypass sampling pipeline, and the third valve is used for controlling opening and closing of the main pipeline.

[0011] Optionally, the top of the sampling container is further provided with an exhaust communication port; the sampling branch further comprises an exhaust pipeline, the exhaust pipeline comprises an air inlet and an air outlet, the air inlet of the exhaust pipeline is communicated with the sampling container through the exhaust communication port, the air outlet of the exhaust pipeline is communicated with the liquid discharge pipeline, and the exhaust pipeline is used for discharging gas in the sampling container.

[0012] Optionally, a second valve is arranged on the liquid discharge pipeline and used for controlling opening and closing of the liquid discharge pipeline, and the second valve is located upstream of the communication position of the liquid discharge pipeline and the exhaust pipeline.

[0013] Optionally, the top of the sampling container is further provided with an exhaust communication port; the liquid flow measuring device further comprises an exhaust pipeline, the exhaust pipeline comprises an air inlet and an air outlet, the air inlet of the exhaust pipeline is communicated with the sampling container through the exhaust communication port, the air outlet of the exhaust pipeline is arranged independently of the third liquid outlet, and the exhaust pipeline is used for discharging gas in the sampling container.

[0014] Optionally, the air inlet of the exhaust pipeline is arranged in the interior of the sampling container, and the position of the air inlet of the exhaust pipeline is higher than the position of the first liquid level sensor.

[0015] Optionally, the liquid flow measuring device further comprises a control device, which is coupled with the first valve, the second valve and the third valve and used for controlling opening and closing states of the first valve, the second valve and the third valve.

[0016] Optionally, the liquid flow measuring device comprises a timer, which is configured to start timing in response to the signal of the second liquid level sensor and stop timing in response to the signal of the first liquid level sensor in the sampling mode.

[0017] Optionally, the liquid flow measuring device further comprises a cabinet, and a control panel arranged on the cabinet, wherein the sampling branch and at least part of the main pipeline are located inside the cabinet, and the control panel comprises the control device.

[0018] Optionally, the control panel is further provided with a display screen, which is configured to display the liquid flow obtained after the sampling container completes sampling.

[0019] Optionally, the liquid flow measuring device further comprises a host computer, and the host computer comprises the control device.

[0020] Compared with the prior art, the technical scheme of the liquid flow measuring device has the following advantages:

[0021] The liquid flow measuring device provided by the embodiment of the utility model discloses a main pipeline, the main pipeline includes first liquid inlet and first liquid outlet, sampling branch with the main pipeline intercommunication, the sampling branch includes: sampling container, the sampling container has first reference liquid level position and second reference liquid level position, the first reference liquid level position is higher than the second reference liquid level position, first liquid level sensor is arranged on the lateral wall of the first reference liquid level position of the sampling container, second liquid level sensor is arranged on the lateral wall of the second reference liquid level position of the sampling container, when liquid flow is measured, liquid flows into the sampling container, the first reference liquid level position is provided with the first liquid level sensor, the second reference liquid level position is provided with the second liquid level sensor, because the liquid volume between the second reference liquid level position and the first reference liquid level position in the sampling container is fixed, therefore can reach the first reference liquid level position by calculating the time required for liquid from the second reference liquid level position, obtains the flow data of liquid, is favorable in increasing time effectiveness while reducing manual input cost and reducing chemical pollution risk, and moreover, the first liquid level sensor and the second liquid level sensor are used, and it is favorable to improve the sensitivity of measurement, thereby it is favorable to improve the measurement accuracy of liquid flow.

[0022] In an alternative, the top of the sample container is further provided with an exhaust communication port, and the sample branch further comprises an exhaust pipeline, which comprises an air inlet and an air outlet, the air inlet of the exhaust pipeline is communicated with the sample container through the exhaust communication port, and the air outlet of the exhaust pipeline is communicated with the liquid discharge pipeline; during the process that the liquid medicine enters the sample container, the original gas in the sample container is discharged through the exhaust pipeline, which is beneficial to maintain the stability of the air pressure in the sample container, effectively inhibits the occurrence of accidents such as liquid medicine overflow or sample container damage due to the occurrence of pressure accumulation in the sample container, and thus is beneficial to improve the safety and reliability of the liquid medicine flow measuring device.

[0023] In an alternative, the liquid medicine flow measuring device further comprises an exhaust pipeline, which comprises an air inlet and an air outlet, the air inlet of the exhaust pipeline is communicated with the sample container through the exhaust communication port, and the air outlet of the exhaust pipeline is independently arranged with the third liquid outlet of the liquid discharge pipeline, and the exhaust pipeline is used for discharging the gas in the sample container; during the process that the liquid medicine enters the sample container through the bypass sample pipeline, the original gas in the sample container is discharged through the exhaust pipeline, which is beneficial to maintain the stability of the air pressure in the sample container, effectively inhibits the occurrence of accidents such as liquid medicine overflow or sample container damage due to the occurrence of pressure accumulation in the sample container, and thus is beneficial to improve the safety and reliability of the liquid medicine flow measuring device. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a structure schematic view of components of the liquid medicine flow measuring device of the first embodiment of the utility model;

[0025] Figure 2 is a box structure schematic view of the liquid medicine flow measuring device of an embodiment of the utility model;

[0026] Figure 3 is a structure schematic view of components of the liquid medicine flow measuring device of the second embodiment of the utility model. DETAILED DESCRIPTION

[0027] As known from the background art, how to improve the measurement accuracy, reduce the labor cost investment and chemical pollution during the liquid medicine flow measurement has become a problem to be solved.

[0028] To solve the above problems, the utility model embodiment provides a kind of liquid flow measuring device, comprising: main pipeline, the main pipeline includes first liquid inlet and first liquid outlet;Sample branch, communicate with the main pipeline, the sample branch includes: sample container, the sample container has first reference liquid level position and second reference liquid level position, the first reference liquid level position is higher than the second reference liquid level position;First liquid level sensor, set on the side wall of the first reference liquid level position of the sample container;Second liquid level sensor, set on the side wall of the second reference liquid level position of the sample container.

[0029] When liquid flow measurement is carried out, liquid flows into the sample container, the first reference liquid level position is provided with the first liquid level sensor, and the second reference liquid level position is provided with the second liquid level sensor. Since the liquid volume between the second reference liquid level position and the first reference liquid level position in the sample container is fixed, the flow data of the liquid can be obtained by calculating the time required for the liquid to reach the first reference liquid level position from the second reference liquid level position, which is beneficial to increase the timeliness, reduce the labor cost and reduce the risk of chemical pollution. Moreover, the use of the first liquid level sensor and the second liquid level sensor is beneficial to improve the sensitivity of measurement, thereby improving the measurement accuracy of liquid flow.

[0030] In order to make the above-mentioned purpose, features and advantages of the embodiments of the utility model more obvious and easy to understand, the specific embodiments of the utility model will be described in detail below with reference to the drawings.

[0031] Figure 1 is the structure diagram of the component of the liquid flow measuring device of the first embodiment of the utility model, Figure 2 is the structure diagram of the box body of the liquid flow measuring device of an embodiment of the utility model.

[0032] It should be noted that, Figure 1 In the figure, the outline of the box body is indicated by a dashed line.

[0033] Reference Figure 1 The liquid flow measuring device provided by the first embodiment includes: a main pipeline 100, the main pipeline 100 includes a first liquid inlet 101 and a first liquid outlet 102; a sample branch 200, which communicates with the main pipeline 100, the sample branch 200 includes: a sample container 201, the sample container 201 has a first reference liquid level position 203 and a second reference liquid level position 204, the first reference liquid level position 203 is higher than the second reference liquid level position 204; a first liquid level sensor 205, which is arranged on the side wall of the first reference liquid level position 203 of the sample container 201; a second liquid level sensor 206, which is arranged on the side wall of the second reference liquid level position 204 of the sample container 201.

[0034] In the embodiment, when measuring the flow of the chemical liquid, the chemical liquid flows into the sample container 201, the first reference liquid level position 203 is provided with the first liquid level sensor 205, and the second reference liquid level position 204 is provided with the second liquid level sensor 206. Since the volume of the chemical liquid between the second reference liquid level position 204 and the first reference liquid level position 203 in the sample container 201 is fixed, the flow data of the chemical liquid can be obtained by calculating the time required for the chemical liquid to reach the first reference liquid level position 203 from the second reference liquid level position 204, which is beneficial to increase the timeliness, reduce the labor cost, and reduce the risk of chemical pollution. Moreover, the first liquid level sensor 205 and the second liquid level sensor 206 are used, which is beneficial to improve the sensitivity of measurement, thereby improving the measurement accuracy of the flow of the chemical liquid.

[0035] Correspondingly, by using the chemical liquid flow measuring device, real-time measurement of the flow of the chemical liquid can be realized, thereby effectively preventing accidents caused by fluctuations in the flow of the chemical liquid.

[0036] It should be noted that, compared with the method of observing the liquid level, the second liquid level sensor 206 can quickly and accurately detect whether the liquid level of the chemical liquid reaches the second reference liquid level position 204, and the first liquid level sensor 205 can quickly and accurately detect whether the liquid level of the chemical liquid reaches the first reference liquid level position 203.

[0037] In the embodiment, the first liquid level sensor 205 and the second liquid level sensor 206 are photoelectric liquid level sensors. When the liquid level of the chemical liquid reaches the first reference liquid level position 203 or the second reference liquid level position 204, the light emitted by the photoelectric liquid level sensor is refracted or absorbed, which causes the light intensity received by the photosensitive component inside the photoelectric liquid level sensor to decrease, thereby detecting the specific position of the liquid level of the chemical liquid. The photoelectric liquid level sensor has high measurement accuracy, which is beneficial to improve the measurement accuracy of the chemical liquid flow measuring device for the flow of the chemical liquid. The photoelectric liquid level sensor has high response speed and high sensitivity for liquid level detection.

[0038] In other embodiments, the first liquid level sensor and the second liquid level sensor can also use other sensors capable of detecting the liquid level.

[0039] It should be noted that the main pipeline 100 is used as a chemical liquid transmission pipeline in a non-sampling mode.

[0040] The sample container 201 is used to contain the flowing chemical liquid in a sampling mode, thereby calculating the flow of the chemical liquid.

[0041] In the embodiment, the sampling container 201 comprises a transparent container wall 207, which effectively prevents the container wall of the sampling container 201 from interfering with the liquid level detection of the first liquid level sensor 205 and the second liquid level sensor 206, thereby improving the accuracy of the drug liquid flow measurement and reducing the difficulty of the liquid level detection of the first liquid level sensor 205 and the second liquid level sensor 206.

[0042] The first liquid level sensor 205 and the second liquid level sensor 206 are arranged on the outer wall of the transparent container wall 207, which avoids the direct contact of the first liquid level sensor 205 and the second liquid level sensor 206 with the drug liquid, thereby reducing the influence of the drug liquid on the service life or performance of the first liquid level sensor 205 and the second liquid level sensor 206, improving the service life of the first liquid level sensor 205 and the second liquid level sensor 206, and thereby improving the reliability of the first liquid level sensor 205 and the second liquid level sensor 206.

[0043] In other embodiments, the container wall of the sampling container can also be a non-transparent container wall. For example, the first liquid level sensor and the second liquid level sensor can also be arranged on the inner wall of the container wall of the sampling container.

[0044] As an example, the sampling container 201 is a sampling pool, and in other embodiments, the sampling container can also be other kinds of structures.

[0045] In the embodiment, the communication position of the sampling branch 200 and the main pipeline 100 is located between the first liquid inlet 101 and the first liquid outlet 102; the sampling branch 200 further comprises a bypass sampling pipeline 300, the bypass sampling pipeline 300 comprises a second liquid inlet 301 and a second liquid outlet 302, the second liquid inlet 301 communicates with the main pipeline 100, and the second liquid outlet 302 of the bypass sampling pipeline 300 is arranged inside the sampling container 201, and the position of the second liquid outlet 302 of the bypass sampling pipeline 300 is lower than the position of the second liquid level sensor 206.

[0046] The second liquid inlet 301 of the bypass sampling pipeline 300 communicates with the main pipeline 100, so that in the sampling mode, the drug liquid can flow into the bypass sampling pipeline 300 through the communication position of the bypass sampling pipeline 300 and the main pipeline 100.

[0047] The second liquid outlet 302 of the bypass sampling pipeline 300 communicates with the sampling container 201, so that the drug liquid flows into the sampling container 201 through the second liquid outlet 302.

[0048] The liquid medicine flows into the sample container 201 through the second liquid outlet 302, therefore, by arranging the position of the second liquid outlet 302 to be lower than the position of the second liquid level sensor 206, the interference of the liquid medicine flowing into the sample container 201 from the second liquid outlet 302 to the detection result of the second liquid level sensor 206 is reduced, the probability of the second liquid level sensor 206 making a mistake in judging the time when the liquid level of the liquid medicine reaches the second reference liquid level position 204 is reduced, the stability of the detection of the liquid level of the liquid medicine by the second liquid level sensor 206 is improved, and the accuracy of the starting time point of the liquid medicine flow measurement is improved, thereby improving the accuracy of the liquid medicine flow measurement of the liquid medicine flow measurement device.

[0049] In other embodiments, the position of the second liquid outlet of the bypass sample pipeline can also be higher than the position of the second liquid level sensor, or the position of the second liquid outlet of the bypass sample pipeline can also be higher than the position of the first liquid level sensor.

[0050] In this embodiment, the bottom of the sample container 201 is provided with a liquid outlet 208; the sample branch 200 further comprises a liquid discharge pipeline 400, the liquid discharge pipeline 400 comprises a third liquid inlet 401 and a third liquid outlet 402, the third liquid inlet 401 is in communication with the liquid outlet 208 of the sample container 201, and the liquid discharge pipeline 400 is used to discharge the liquid medicine in the sample container 201 after the sample container 201 completes the sampling.

[0051] The liquid outlet 208 facilitates the communication between the sample container 201 and the liquid discharge pipeline 400, which is beneficial to simplify the pipeline structure of the liquid medicine flow measurement device.

[0052] After the sampling is completed, the liquid medicine is discharged through the third liquid outlet 402 of the liquid discharge pipeline 400, which avoids wasting the liquid medicine during the sampling process; and the liquid discharge pipeline 400 empties the liquid medicine in the sample container 201, which facilitates the next cycle of sampling process and is beneficial to realize the real-time measurement of the liquid medicine flow by the liquid medicine flow measurement device.

[0053] In this embodiment, the sample container 201 comprises a container body 209; a bottom cover 210 located at the bottom of the container body 209, and the bottom cover 210 has the liquid outlet 208 therein.

[0054] By arranging the bottom cover 210 at the bottom of the container body 209, the preparation of the sample container 201 is facilitated. For example, the selection of the material of the container body 209 can reduce the influence on the bottom cover 210. For another example, in the case that the bottom cover 210 and the container body 209 are detachably connected, the bottom cover 210 can be replaced.

[0055] It should be noted that the sample container 201 comprises a transparent container wall 207, and accordingly, the container body 209 is a transparent container body.

[0056] In other embodiments, the bottom cover and the container body can also be an integrated structure.

[0057] With reference to Figure 1 In this embodiment, a first valve 50 is arranged on the bypass sampling pipeline 300 for controlling the opening and closing of the bypass sampling pipeline 300; a second valve 60 is arranged on the liquid discharge pipeline 400 for controlling the opening and closing of the liquid discharge pipeline 400; and a third valve 70 is arranged on the main pipeline 100, and the third valve 70 is located downstream of the communication position of the main pipeline 100 and the bypass sampling pipeline 300, and the third valve 70 is used for controlling the opening and closing of the main pipeline 100.

[0058] The first valve 50, the second valve 60 and the third valve 70 respectively control the opening and closing of each pipeline, realize the separate control of each pipeline, and facilitate to meet the opening and closing requirements of each pipeline under different measurement modes; in addition, when an unexpected failure occurs in the corresponding pipeline, timely opening and closing operation is performed by controlling the corresponding valve, which is beneficial to improve the reliability of the liquid flow measurement device.

[0059] It should be noted that, along the flow direction of the liquid in the main pipeline 100, the third valve 70 is located downstream of the communication position of the main pipeline 100 and the bypass sampling pipeline 300, so that the liquid can still flow into the bypass sampling pipeline 300 under the condition that the third valve 70 is closed.

[0060] Specifically, the first valve 50, the second valve 60 and the third valve 70 all comprise solenoid valves, so as to realize automatic opening and closing in response to a control signal. In other embodiments, the first valve, the second valve and the third valve can also be other valves capable of controlling the opening and closing of the pipeline.

[0061] In this embodiment, the top of the sample container 201 is further provided with an exhaust communication port 211; the sample branch 200 further comprises an exhaust pipeline 500, the exhaust pipeline 500 comprises an air inlet 501 and an air outlet 502, the air inlet 501 of the exhaust pipeline 500 is communicated with the sample container 201 through the exhaust communication port 211, the air outlet 502 of the exhaust pipeline 500 is communicated with the liquid discharge pipeline 400, and the exhaust pipeline 500 is used for discharging the gas in the sample container 201.

[0062] The exhaust communication port 211 facilitates the communication between the sampling container 201 and the exhaust pipeline 500, and is beneficial to simplify the pipeline structure of the liquid flow measuring device.

[0063] During the process of the liquid entering the sampling container 201, the original gas in the sampling container 201 is discharged through the exhaust pipeline 500, which is beneficial to maintain the stable air pressure in the sampling container 201, effectively suppresses the occurrence of accidents such as liquid overflow or damage of the sampling container 201 due to the pressure build-up in the sampling container 201, and when the liquid level of the liquid in the sampling container 201 is too high (for example, when the liquid flow measuring device fails and the liquid level sensor fails), the liquid can also be discharged through the exhaust pipeline 500, effectively improving the problem of liquid overflow, thereby improving the safety and reliability of the liquid flow measuring device.

[0064] Moreover, the exhaust pipeline 500 and the liquid discharge pipeline 400 share the third liquid outlet 402, which is beneficial to reduce the number of liquid injection ports and make the exhaust pipeline 500 and the liquid discharge pipeline 400 more compact, thereby reducing the occupied area of the sampling branch 200.

[0065] In the embodiment, the liquid discharge pipeline 400 is provided with a second valve 60 for controlling the opening and closing of the liquid discharge pipeline 400. Therefore, along the flow direction of the liquid in the liquid discharge pipeline 400, the second valve 60 is located upstream of the communication position of the liquid discharge pipeline 400 and the exhaust pipeline 500, so that the exhaust pipeline 500 is always in communication with the third liquid outlet 402, thereby ensuring that the original gas in the sampling container 201 is discharged in time through the exhaust pipeline 500 during the process of the liquid entering the sampling container 201 through the bypass sampling pipeline 300.

[0066] In other embodiments, the liquid flow measuring device can also not be provided with the exhaust pipeline.

[0067] In the embodiment, the inner diameters of the bypass sampling pipeline 300 and the liquid discharge pipeline 400 are greater than or equal to 17 mm. The inner diameters of the bypass sampling pipeline 300 and the liquid discharge pipeline 400 are much larger than the inner diameters of commonly used flowmeters, which effectively suppresses the occurrence of blockage due to the large viscosity of the liquid, and is beneficial to improve the reliability of the liquid flow measuring device.

[0068] In one embodiment, the inner diameter of the bypass sampling pipeline 300 and the inner diameter of the liquid discharge pipeline 400 are greater than or equal to 17 mm and less than or equal to 50 mm. The inner diameter of the bypass sampling pipeline 300 and the inner diameter of the liquid discharge pipeline 400 are less than or equal to 50 mm, which facilitates the control of the flow of the liquid medicine in the bypass sampling pipeline 300 and the liquid discharge pipeline 400, avoids the waste of the liquid medicine, and is conducive to improving the utilization rate of the liquid medicine.

[0069] In other embodiments, the inner diameter of the bypass sampling pipeline and the inner diameter of the liquid discharge pipeline can also be other values according to actual needs.

[0070] Reference Figure 1 In this embodiment, the gas inlet 501 of the exhaust pipeline 500 is arranged inside the sampling container 201, and the position of the gas inlet 501 of the exhaust pipeline 500 is higher than the position of the first liquid level sensor 205.

[0071] In the process of measuring the flow of the liquid medicine, when the liquid level of the liquid medicine in the sampling container 201 reaches the first reference liquid level position 203, the first liquid level sensor 205 receives a liquid level signal, and the timing is stopped. At the same time, the liquid medicine is discharged into the liquid discharge pipeline 400. The position of the gas inlet 501 of the exhaust pipeline 500 is higher than the position of the first liquid level sensor 205, which is conducive to reducing the occurrence of accidents such as poor exhaust or pipeline blockage caused by the liquid medicine entering the exhaust pipeline 500, and correspondingly reducing the probability of accidents such as liquid overflow or damage to the sampling container 201 caused by the exhaust pipeline 500 being blocked, thereby facilitating the safety and reliability of the liquid medicine flow measuring device.

[0072] Reference Figure 1 In this embodiment, the sampling container 201 includes a container body 209 and a top cover 212 arranged on the top of the container body 209. The top cover 212 has the exhaust communication port 211.

[0073] The top cover 212 is arranged on the top of the container body 209, which facilitates the exhaust of gas and is conducive to avoiding the exhaust communication port 211 from the discharge path of the liquid medicine, thereby facilitating the rationality of the structural design of the liquid medicine flow measuring device.

[0074] By arranging the top cover 212 on the top of the container body 209, the preparation of the sampling container 201 is facilitated. For example, the selection of the material of the container body 209 can reduce the influence on the top cover 212. For another example, in the case that the top cover 212 and the container body 209 are detachably connected, the top cover 212 can be replaced.

[0075] In other embodiments, the top cover and the container body can also be an integrated structure.

[0076] Reference Figure 1 In this embodiment, the main pipeline 100 is provided with a back pressure valve 80. The back pressure valve 80 is located upstream of the communication position between the main pipeline 100 and the bypass sampling pipeline 200 along the flow direction of the liquid medicine in the main pipeline 100, and is used to control the flow of the liquid medicine.

[0077] The back pressure valve 80 can adjust the flow of the liquid medicine according to different process requirements, which is beneficial to improve the universality of the liquid medicine flow measuring device. In addition, the back pressure valve 80 can also improve the flow fluctuation problem of the liquid medicine, which is beneficial to improve the uniformity of the liquid medicine flow, thereby improving the reliability of the liquid medicine flow measuring device.

[0078] In other embodiments, the main pipeline can also not be provided with a back pressure valve or the back pressure valve can be arranged at other positions.

[0079] In this embodiment, the main pipeline 100 includes a liquid supply pipeline 120 and a dosing pipeline 121 in communication; the liquid medicine flow measuring device further includes a tee pipe 122; the tee pipe 122 includes: a first communication port 123 in communication with a liquid outlet 124 of the liquid supply pipeline 120; a second communication port 125 in communication with a liquid inlet 301 of the bypass sampling pipeline 300; and a third communication port 126 in communication with a liquid inlet 127 of the dosing pipeline 121.

[0080] The tee pipe 122 realizes the communication of the liquid supply pipeline 120 with the dosing pipeline 121 and the bypass sampling pipeline 300 at the same time, which is beneficial to change the flow direction of the liquid medicine and reduce the transmission difficulty of the liquid medicine, and is beneficial to simplify the pipeline structure of the liquid medicine flow measuring device.

[0081] Correspondingly, the third valve 70 is arranged on the dosing pipeline 121.

[0082] In other embodiments, other devices can also be used to realize the communication of the liquid supply pipeline with the dosing pipeline and the bypass sampling pipeline at the same time.

[0083] Reference Figure 2 In this embodiment, the liquid medicine flow measuring device includes a control device 600 coupled with the first valve 50, the second valve 60 and the third valve 70, and used to control the on-off state of the first valve 50, the second valve 60 and the third valve 70.

[0084] The control device 600 is configured to configure the working mode of the drug liquid flow measuring device as a measuring mode or a non-measuring mode, and control the first valve 50 to be opened and the second valve 60 and the third valve 70 to be closed in the measuring mode, and control the first valve 50 to be closed and the second valve 60 and the third valve 70 to be opened in the non-measuring mode.

[0085] By controlling the opening and closing states of the valves through the control device 600, the drug liquid flow can be measured in real time without interruption, which is convenient for continuously monitoring the flow of the drug liquid and is conducive to reducing the risk of drug liquid abnormality.

[0086] In the embodiment, the drug liquid flow measuring device comprises a timer (not shown in the figure), which is configured to start timing in response to the signal of the second liquid level sensor 206 in the measuring mode, and stop timing in response to the signal of the first liquid level sensor 205.

[0087] As an example, the control device 600 comprises a controller (not shown in the figure) in which a timer is integrated, so that the control device 600 can be configured to start timing in response to the signal of the second liquid level sensor 206 and stop timing in response to the signal of the first liquid level sensor 205 in the measuring mode.

[0088] In other embodiments, the controller and the timer can also be two independent devices.

[0089] Specifically, after entering the measuring mode, the control device 600 closes the second valve 60 and the third valve 70, and opens the first valve 50, so that the drug liquid flows into the measuring container 201 through the bypass measuring pipeline 300 and accumulates in the measuring container 201; when the liquid level of the drug liquid in the measuring container 201 reaches the second reference liquid level position 204 (for example, reaches the same height as the second liquid level sensor 206), the second liquid level sensor 206 transmits a signal to the timer, and the timer starts timing; when the liquid level of the drug liquid in the measuring container 201 reaches the first reference liquid level position 203 (for example, reaches the height of the first liquid level sensor 205), the first liquid level sensor 205 transmits a signal to the timer, and the timer ends timing. By calculating the ratio of the volume of the drug liquid between the second reference liquid level position 204 and the first reference liquid level position 203 to the time consumed from the second reference liquid level position 204 to the first reference liquid level position 403, real-time drug liquid flow data is obtained, and the flow measurement is completed.

[0090] The control device 600 can be used to control the chemical liquid flow measuring device, thereby reducing the labor cost, reducing the risk of chemical pollution, and improving the accuracy and reliability of the chemical liquid flow measurement.

[0091] In this embodiment, the control device 600 includes an interaction module 601 and a controller (not shown in the figure) coupled to the interaction module 601. The controller is configured to perform a control operation corresponding to a trigger event of the interaction module 601 in response to the trigger event. The interaction module 601 is configured to implement the daily operation or status indication of the chemical liquid flow measuring device.

[0092] Specifically, the interaction module 601 includes a measurement start button 602. The measurement start button 602 is configured to configure the working mode of the chemical liquid flow measuring device as a measurement mode.

[0093] The measurement start button 602 is configured to configure the working mode of the chemical liquid flow measuring device as a measurement mode, thereby simplifying the step of starting the measurement mode and reducing the difficulty of starting the measurement mode, and thereby reducing the operation difficulty of the chemical liquid flow measuring device.

[0094] The controller is configured to control the first valve 50 to be opened and the second valve 60 and the third valve 70 to be closed in the measurement mode, and to control the first valve 50 to be closed and the second valve 60 and the third valve 70 to be opened in the non-measurement mode.

[0095] In this embodiment, the interaction module 601 further includes one or more of a measurement type conversion module 603 and a measurement stop button 615.

[0096] The measurement type conversion module 603 is configured to configure the measurement mode as a single measurement mode or a continuous measurement mode.

[0097] In the single measurement mode, only one batch of liquid medicine is measured, and after completing the measurement, the liquid medicine flow measurement device automatically returns to the non-measurement mode, and the on-site meter head end control valve box uploads the measurement data to the SCADA host computer through the controller (for example, PLC).

[0098] Through the measurement type conversion module 603, the liquid medicine flow measurement device is provided with various conversion measurement mode ways, which is beneficial to realize uninterrupted real-time monitoring of the liquid medicine flow by the liquid medicine flow measurement device, effectively inhibit the occurrence of accidents caused by liquid medicine flow fluctuation, thereby improving the safety and reliability of the liquid medicine flow measurement device.

[0099] As an example, as shown in Figure 2 The measurement type conversion module 603 is a measurement type conversion knob 606, and in other embodiments, the measurement type conversion module can also be other operation type modules, for example, the measurement type conversion module is a measurement type conversion button, single pressing the measurement type conversion button configures the measurement mode of the liquid medicine flow measurement device to the single measurement mode, and on this basis, twice pressing the measurement type conversion button configures the measurement mode of the liquid medicine flow measurement device to the single measurement mode.

[0100] The measurement stop button 615 is used to end the operation of the measurement mode, and configure the working mode of the liquid medicine flow measurement device to the non-measurement mode.

[0101] In this embodiment, the interaction module 601 further comprises one or more of a fault module 604 and an alarm indication module 605.

[0102] In this embodiment, the fault module 604 comprises one or both of a fault indication lamp 607 and a reset button 608.

[0103] When the liquid medicine flow measurement device fails (for example, when any valve or any liquid level sensor fails), the fault indication lamp 607 is lit, which is used to visually remind the external operator, so that the external operator can timely find the fault, reduce the possibility of damaging the equipment or wasting the liquid medicine due to the fault, and improve the safety of the liquid medicine flow measurement device.

[0104] In this embodiment, the controller is configured to control the first valve 50 to be closed and the second valve 60 and the third valve 70 to be opened in response to the turn-on signal of the fault indicator 607, so as to ensure that the liquid medicine is all introduced into the dosing port.

[0105] The reset button 608 is configured to restore the device or system to the initial state, clear the current setting or operation state, facilitate timely elimination of the adverse effects of the fault on the device and subsequent dosing of the liquid medicine, and facilitate improvement of the safety and reliability of the liquid medicine flow measuring device. For example, the reset button 608 is configured to restore the states of the first valve 50, the second valve 60 and the third valve 70 to the states corresponding to the non-measuring mode after the fault is removed.

[0106] In this embodiment, the alarm indication module 605 is configured to alarm when the liquid medicine flow obtained after the measuring container 201 completes the measurement exceeds the interval range.

[0107] When the liquid medicine flow exceeds the interval range, the alarm indication module 605 alarms, which facilitates timely adjustment of the liquid medicine flow, effectively suppresses the occurrence of accidents caused by fluctuations in the liquid medicine flow, and thus facilitates improvement of the safety and reliability of the liquid medicine flow measuring device.

[0108] As an example, as shown in Figure 2 The alarm indication module 605 is an alarm indicator 609.

[0109] In other embodiments, the alarm indication module can also be indicated in other forms.

[0110] In this embodiment, the controller can include a programmable logic controller (PLC), so as to automatically control the first valve 50, the second valve 60 and the third valve 70 to change the opening and closing states according to different measuring modes through a preprogrammed logic program, and automatically control the operation states of each interaction module 601, effectively reduce the operation difficulty, and facilitate improvement of the reliability of the liquid medicine flow measuring device. In other embodiments, the controller can also be other applicable processors according to actual needs.

[0111] In this embodiment, the liquid medicine flow measuring device further includes a box body 610 and a control panel 611 disposed on the box body 610. The measuring branch 200 and at least part of the main pipeline 100 are located inside the box body 610, and the control panel 611 includes the control device 600.

[0112] As an example, the control device 600 has multiple function buttons or modules integrated on the control panel 611, which reduces the operation difficulty and improves the reliability and universality of the liquid flow measuring device.

[0113] The box 610 is used for protecting at least part of the main pipeline 100 and the sampling branch 200, which prolongs the service life of the pipelines and improves the reliability of the liquid flow measuring device.

[0114] In this embodiment, the control panel 611 is also provided with a display screen 612, which is used for displaying the liquid flow obtained after the sampling container 201 completes sampling.

[0115] As an example, the display screen 612 can clearly and directly display the real-time data of the liquid flow, which is convenient for the operator to check and record, and is conducive to real-time monitoring of the liquid flow, effectively inhibiting the occurrence of accidents caused by liquid flow fluctuation, thereby improving the safety and reliability of the liquid flow measuring device.

[0116] In other embodiments, other devices can also be used to display the liquid flow obtained after the sampling container completes sampling.

[0117] It should be noted that, in this embodiment, the liquid flow measuring device can also include a host computer (not shown in the figure), and the host computer includes the control device 600.

[0118] Through the control panel 611 and the host computer, multiple paths can control the liquid flow measuring device, which improves the reliability and operation convenience of the liquid flow measuring device.

[0119] It should be noted that the interaction modules 601 on the control panel 611 and the host computer can be the same or partially the same. For example, the interaction modules 601 on the control panel 611 can include the sampling start button 602, the sampling type conversion module 603, the fault indicator 607 and the reset button 608, and the interaction modules of the host computer can include the sampling start button, the sampling stop button, the fault indicator and the alarm indication module.

[0120] Figure 3 FIG. 2 is a structural schematic view of components of the liquid flow measuring device according to the second embodiment of the present application.

[0121] It should be noted that, Figure 3 In FIG. 2, the outline of the box is indicated by a dashed line.

[0122] The same as the foregoing embodiments, the same parts are not described herein again, and the difference between the embodiment and the foregoing embodiments is that the top of the sample container 700 is further provided with an exhaust communication port 701; the liquid flow measuring device further comprises an exhaust pipeline 702, the exhaust pipeline 702 comprises an air inlet 703 and an air outlet 704, the air inlet 703 of the exhaust pipeline 702 communicates with the sample container 700 through the exhaust communication port 701, the air outlet 704 of the exhaust pipeline 702 is independently arranged with the third liquid outlet 715, and the exhaust pipeline 702 is used for exhausting the gas in the sample container 700.

[0123] With reference to Figure 3 The exhaust pipeline 702 is independent of the liquid discharge pipeline 705, the air outlet 704 is used for exhausting the gas in the sample container 700, and the influence of the exhaust pipeline 702 on the liquid discharge pipeline 705 is reduced.

[0124] For example, the liquid discharge pipeline 705 is independently arranged with the exhaust pipeline 702, the gas in the exhaust pipeline 702 avoids interfering with the liquid discharge of the liquid discharge pipeline 705, effectively inhibits the overflow or reflux accident of the liquid, and is favorable for improving the reliability of the liquid flow measuring device.

[0125] For another example, the liquid discharge pipeline 705 is independently arranged with the exhaust pipeline 702, so that the shape of the liquid discharge pipeline 705 is limited by the exhaust pipeline 702. As an example, the liquid discharge pipeline 705 is vertically arranged in the embodiment, effectively inhibits the liquid residue in the liquid discharge pipeline 705, and is favorable for improving the utilization rate of the liquid.

[0126] Although the utility model discloses as above, the utility model is not limited to this. Any person skilled in the art, without departing from the spirit and scope of the utility model, can make various changes and modifications, therefore the protection scope of the utility model should be the range limited by the claims.

Claims

1. A liquid medicine flow measurement device, characterized in that, include: The main pipeline includes a first inlet and a first outlet. A sampling branch is connected to the main pipeline. The sampling branch includes a sampling container, which has a first reference liquid level position and a second reference liquid level position, wherein the first reference liquid level position is higher than the second reference liquid level position. A first liquid level sensor is disposed on the side wall of the sample container at the first reference liquid level position; a second liquid level sensor is disposed on the side wall of the sample container at the second reference liquid level position.

2. The liquid flow measuring device as described in claim 1, characterized in that, The sample container includes a transparent container wall; Both the first liquid level sensor and the second liquid level sensor are mounted on the outer wall of the transparent container.

3. The liquid flow measuring device as described in claim 1, characterized in that, The connection point between the sample testing branch and the main branch is located between the first inlet and the first outlet. The sampling branch also includes a bypass sampling pipeline, which includes a second inlet and a second outlet. The second inlet is connected to the main pipeline, and the second outlet of the bypass sampling pipeline is located inside the sampling container. The position of the second outlet of the bypass sampling pipeline is lower than the position of the second liquid level sensor.

4. The liquid flow measuring device as described in claim 1, characterized in that, The sample container is provided with a drain outlet at the bottom; The sample testing branch also includes a drain pipe, which includes a third inlet and a third outlet. The third inlet is connected to the drain outlet of the sample testing container. The drain pipe is used to discharge the drug solution in the sample testing container after the sample testing container has completed the testing.

5. The liquid flow measuring device as described in claim 4, characterized in that, The connection point between the sampling branch and the main pipeline is located between the first inlet and the first outlet; the sampling branch also includes a bypass sampling pipeline, which includes a second inlet and a second outlet, the second inlet being connected to the main pipeline, and the second outlet of the bypass sampling pipeline being connected to the sampling container. A first valve is provided on the bypass sampling pipeline to control the opening and closing of the bypass sampling pipeline; A second valve is installed on the drain pipe to control the opening and closing of the drain pipe; A third valve is installed on the main pipeline. The third valve is located downstream of the connection point between the main pipeline and the bypass sampling pipeline. The third valve is used to control the opening and closing of the main pipeline.

6. The liquid flow measuring device as described in claim 4, characterized in that, The top of the sample container is also provided with an exhaust port; The sample testing branch also includes an exhaust pipe, which includes an inlet and an outlet. The inlet of the exhaust pipe is connected to the sample container through the exhaust connection port, and the outlet is connected to the drain pipe. The exhaust pipe is used to discharge the gas inside the sample container.

7. The liquid flow measuring device as described in claim 6, characterized in that, A second valve is installed on the drain pipe to control the opening and closing of the drain pipe. The second valve is located upstream of the connection point between the drain pipe and the exhaust pipe.

8. The liquid flow measuring device as described in claim 4, characterized in that, The top of the sample container is also provided with an exhaust port; The liquid flow measurement device further includes an exhaust pipe, which includes an inlet and an outlet. The inlet of the exhaust pipe is connected to the sample container through the exhaust connection port. The outlet and the third liquid outlet are independently configured. The exhaust pipe is used to discharge the gas in the sample container.

9. The liquid flow measuring device as described in claim 6 or 8, characterized in that, The air inlet of the exhaust pipe is located inside the sample container, and the position of the air inlet of the exhaust pipe is higher than the position of the first liquid level sensor.

10. The liquid flow measuring device as described in claim 5, characterized in that, The liquid flow measurement device further includes a control device coupled to the first valve, the second valve and the third valve, for controlling the on / off state of the first valve, the second valve and the third valve.

11. The liquid flow measuring device as described in claim 1, characterized in that, The liquid flow measurement device includes a timer, which is used to start timing in response to a signal from the second liquid level sensor in sample measurement mode, and to stop timing in response to a signal from the first liquid level sensor.

12. The liquid flow measuring device as described in claim 10, characterized in that, The liquid flow measurement device further includes: a housing; and a control panel, which is mounted on the housing; The sampling branch and at least part of the main pipeline are located inside the housing, and the control panel includes the control device.

13. The liquid flow measuring device as described in claim 12, characterized in that, The control panel is also equipped with a display screen, which is used to display the flow rate of the drug solution obtained after the sample container has completed the sample testing.

14. The liquid flow measuring device as described in claim 10, characterized in that, The liquid flow measurement device also includes a host computer, which includes the control device.

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