Measuring device and system for valve control liquid

Abstract

The utility model discloses a valve control liquid measuring device and system. Relates to the technical field of testing and comprises a measuring part and connecting parts arranged at the two ends of the measuring part, and the measuring part is connected into a to-be-measured pipeline through the connecting parts; the measuring part comprises at least two measuring units of an electromagnetic measuring unit, a near-infrared measuring unit and an ultrasonic measuring unit, and the at least two measuring units are arranged according to a preset sequence; each measuring unit comprises a measuring pipe and a functional part arranged on the outer wall of the measuring pipe, and the measuring pipes of all the measuring units are communicated to form a channel for liquid circulation under the control of a valve of a to-be-measured pipeline; and the functional parts of different measuring units are used for collecting different measuring data of the liquid flowing in the corresponding measuring pipes. The measuring device provided by the utility model not only can meet high-precision measurement requirements under various working conditions, but also has the advantages of simple structure, low cost, convenience in carrying and later maintenance, and good generalizability.

Description

Technical Field

[0001] The utility model relates to the technical field of testing, in particular to a measuring device and system for valve-controlled liquid. Background Art

[0002] Petroleum refers to a mixture of gaseous, liquid and solid hydrocarbons and is one of the main objects of geological exploration. Oil-water measurement (such as phase holdup, oil-water flow measurement, etc.) is often involved in petroleum exploration, exploitation and trade settlement.

[0003] At present, the oil-water measurement of petroleum mainly adopts the on-line measurement method, that is, a single-phase flowmeter or a combination of multiple flowmeters is used for measurement, such as the method of combining an oval gear flowmeter and a Venturi flowmeter. However, this method is generally affected by the measurement range or the type of flow pattern, and the measurement accuracy is not high. Moreover, in the links of petroleum exploitation, transportation, etc., restricted by the valves in the pipeline, there may be different flow conditions. Therefore, how to achieve high-precision measurement of petroleum under various working conditions is an urgent problem to be solved at present. Summary of the Utility Model

[0004] The utility model provides a measuring device and system for valve-controlled liquid, which can not only meet the high-precision measurement requirements under various working conditions, but also has a simple structure, low cost, is easy to carry and maintain later, and has good popularization.

[0005] According to one aspect of the utility model, a measuring device for valve-controlled liquid is provided, including: a measuring part and connecting parts arranged at both ends of the measuring part, and the measuring part is connected to the pipeline to be measured through the connecting parts;

[0006] The measuring part includes at least two measuring units among an electromagnetic measuring unit, a near-infrared measuring unit and an ultrasonic measuring unit, and the at least two measuring units are arranged in a preset order;

[0007] Each measuring unit includes a measuring pipe and functional components arranged on the outer wall of the measuring pipe, and the measuring pipes of all measuring units are connected to form a channel for the liquid under the control of the valve in the pipeline to be measured to flow through;

[0008] The functional components of different measuring units are used to collect different measurement data of the liquid flowing in the corresponding measuring pipes.

[0009] Optionally, it further includes: a protective housing; the protective housing is sleeved outside the measuring part for protecting the measuring part.

[0010] Optionally, the functional components of the electromagnetic measuring unit include: two electrode groups and two exciting coils;

[0011] Two electrode groups are symmetrically arranged on the outer wall of the measuring tube of the electromagnetic measuring unit, and two exciting coils are symmetrically arranged on the outer wall of the measuring tube of the electromagnetic measuring unit;

[0012] The intersection of the line connecting the centers of the two exciting coils and the line connecting the centers of the two electrode groups is on the center line of the measuring tube of the electromagnetic measuring unit, and the line connecting the centers of the two exciting coils and the line connecting the centers of the two electrode groups are perpendicular to each other.

[0013] Optionally, an electrode group includes a first electrode and a second electrode. The first electrode and the second electrode are arranged along the extending direction of the measuring tube of the electromagnetic measuring unit, and the distance between the first electrode and the second electrode is greater than or equal to 1 / 3 of the tube length of the measuring tube of the electromagnetic measuring unit;

[0014] The radius of the exciting coil is greater than or equal to 1.5 times the wall radius of the measuring tube of the electromagnetic measuring unit.

[0015] Optionally, the functional components of the near-infrared measuring unit include: at least a pair of probes;

[0016] A pair of probes includes a transmitting end and a receiving end. The transmitting end and the receiving end are symmetrically arranged on the outer wall of the measuring tube of the near-infrared measuring unit.

[0017] Optionally, the transmitting end is a light source with an emission wavelength equal to 980 nm; the receiving end is a photodetector with a wavelength response range between 800 nm and 1700 nm;

[0018] Stainless steel protective sleeves are arranged outside both the light source and the photodetector.

[0019] Optionally, the number of probes is two pairs, and the two pairs of probes are evenly distributed on the outer wall of the measuring tube of the near-infrared measuring unit.

[0020] Optionally, the functional components of the ultrasonic measuring unit include: an ultrasonic array;

[0021] The ultrasonic array includes a plurality of ultrasonic sensors, and the plurality of ultrasonic sensors are arranged in sequence along the extending direction of the measuring tube of the ultrasonic measuring unit.

[0022] Optionally, the measuring tube of the electromagnetic measuring unit is made of stainless steel;

[0023] The measuring tubes of the near-infrared measuring unit and the ultrasonic measuring unit are made of plexiglass.

[0024] According to another aspect of the present invention, there is provided a measuring system for valve-controlled liquid, including the valve-controlled liquid measuring device of any one of the above embodiments, and a processing device and / or a display device.

[0025] The technical solution of the embodiment of the present utility model redesigns the measuring device for valve-controlled liquid. Firstly, the measuring device for valve-controlled liquid includes a measuring part and connecting parts arranged at both ends of the measuring part. The measuring part is connected to the pipeline to be measured through the connecting parts. Once the measuring device for valve-controlled liquid is connected to the pipeline to be measured, no manual operation is required, so that man-machine separation measurement can be realized, avoiding potential harm to the measuring personnel in a narrow space or a radioactive environment. Secondly, the measuring part includes at least two measuring units among an electromagnetic measuring unit, a near-infrared measuring unit and an ultrasonic measuring unit. The at least two measuring units are arranged in a preset order, so that on-demand combination of the measuring part can be realized, which is convenient for carrying and later maintenance. Thirdly, each measuring unit includes a measuring pipe and functional components arranged on the outer wall of the measuring pipe. The measuring pipes of all measuring units are communicated to form a channel for the liquid controlled by the valve in the pipeline to be measured to flow through; the functional components of different measuring units are used to collect different measurement data of the liquid flowing in the corresponding measuring pipes. Thus, the measurement data can be determined from multiple angles, making the measurement result more accurate. In addition, the measuring device for valve-controlled liquid has a simple structure and low cost, and has good popularization prospects.

[0026] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present utility model, nor to limit the scope of the present utility model. Other features of the present utility model will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0028] Figure 1 is a schematic structural diagram of a measuring device for valve-controlled liquid provided by Embodiment 1 of the present utility model;

[0029] Figure 2 is a side view of an electromagnetic measuring unit provided by Embodiment 1 of the present utility model;

[0030] Figure 3 is a top view of an electromagnetic measuring unit provided by Embodiment 1 of the present utility model;

[0031] Figure 4 is a side view of a near-infrared measuring unit provided by Embodiment 1 of the present utility model;

[0032] Figure 5It is a top view of a near-infrared measurement unit provided in the first embodiment of the present utility model;

[0033] Figure 6 It is a side view of an ultrasonic measurement unit provided in the first embodiment of the present utility model. Specific embodiments

[0034] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0035] It should be noted that the terms "first", "second", etc. in the specification and claims of the present utility model and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present utility model described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products, or devices.

[0036] Embodiment 1

[0037] The embodiment of the present utility model provides a measuring device for valve-controlled liquid, including a measuring part and connecting parts arranged at both ends of the measuring part. The measuring part includes at least two measuring units among an electromagnetic measuring unit, a near-infrared measuring unit, and an ultrasonic measuring unit, and the at least two measuring units are arranged in a preset order.

[0038] That is to say, the measuring part provided in the embodiment of the present utility model may include two measuring units or three measuring units.

[0039] When the measuring part includes two measuring units, the measuring device for valve-controlled liquid may include the following three implementation schemes:

[0040] 1) The measurement unit includes an electromagnetic measurement unit and a near-infrared measurement unit, and connection parts are provided at both ends of the measurement unit. Since the connection parts have no front or back, the arrangement order of the electromagnetic measurement unit and the near-infrared measurement unit will not affect the structure of the valve-controlled liquid measurement device. That is, the order of the electromagnetic measurement unit and the near-infrared measurement unit can be arranged arbitrarily. The structure of the valve-controlled liquid measurement device can be understood as: connection part + electromagnetic measurement unit + near-infrared measurement unit + connection part.

[0041] 2) The measurement unit includes an electromagnetic measurement unit and an ultrasonic measurement unit, and connection parts are provided at both ends of the measurement unit. Since the connection parts have no front or back, the arrangement order of the electromagnetic measurement unit and the ultrasonic measurement unit will not affect the structure of the valve-controlled liquid measurement device. That is, the order of the electromagnetic measurement unit and the ultrasonic measurement unit can be arranged arbitrarily. The structure of the valve-controlled liquid measurement device can be understood as: connection part + electromagnetic measurement unit + ultrasonic measurement unit + connection part.

[0042] 3) The measurement unit includes a near-infrared measurement unit and an ultrasonic measurement unit, and connection parts are provided at both ends of the measurement unit. Since the connection parts have no front or back, the arrangement order of the near-infrared measurement unit and the ultrasonic measurement unit will not affect the structure of the valve-controlled liquid measurement device. That is, the order of the near-infrared measurement unit and the ultrasonic measurement unit can be arranged arbitrarily. The structure of the valve-controlled liquid measurement device can be understood as: connection part + near-infrared measurement unit + ultrasonic measurement unit + connection part.

[0043] When the measurement unit includes three measurement units, the measurement unit includes an electromagnetic measurement unit, a near-infrared measurement unit, and an ultrasonic measurement unit. At this time, the arrangement order between the measurement units will affect the structure of the valve-controlled liquid measurement device. However, since the connection parts have no front or back, the valve-controlled liquid measurement device can include the following three implementation schemes:

[0044] 1) The three measurement units are arranged in the order of: electromagnetic measurement unit + near-infrared measurement unit + ultrasonic measurement unit. The structure of the valve-controlled liquid measurement device can be understood as: connection part + electromagnetic measurement unit + near-infrared measurement unit + ultrasonic measurement unit + connection part.

[0045] 2) The three measurement units are arranged in the order of: electromagnetic measurement unit + ultrasonic measurement unit + near-infrared measurement unit. The structure of the valve-controlled liquid measurement device can be understood as: connection part + electromagnetic measurement unit + ultrasonic measurement unit + near-infrared measurement unit + connection part.

[0046] 3) The three measurement units are arranged in the order of: near-infrared measurement unit + electromagnetic measurement unit + ultrasonic measurement unit. The structure of the valve-controlled liquid measurement device can be understood as: connection part + near-infrared measurement unit + electromagnetic measurement unit + ultrasonic measurement unit + connection part.

[0047] In the above implementation solution, the connection part and the measurement unit, as well as between two measurement units, can be detachably combined, so as to select the corresponding measurement unit and / or arrangement order according to the actual working conditions.

[0048] Next, taking the measurement part including three measurement units, and the three measurement units arranged in the order of electromagnetic measurement unit + near-infrared measurement unit + ultrasonic measurement unit as an example, the measurement device for valve-controlled liquid and its technical effects will be described in detail. It can be understood that the descriptions of the above other feasible solutions are similar to those of the following embodiments of the present invention. For the sake of brevity, they will not be repeated here.

[0049] Figure 1 FIG. is a schematic structural diagram of a measurement device for valve-controlled liquid provided in the first embodiment of the present invention. As Figure 1 shown, the measurement device for valve-controlled liquid includes: a measurement part 10 and connection parts 20 provided at both ends of the measurement part 10. The measurement part 10 includes an electromagnetic measurement unit 11, a near-infrared measurement unit 12, and an ultrasonic measurement unit 13 arranged in sequence.

[0050] Specifically, the connection part 20 can be a connection flange, and the model of the connection flange matches the pipeline to be measured, so that the measurement part 10 is connected to the pipeline to be measured through the connection part 10.

[0051] Each measurement unit includes a measurement pipe and a functional component provided on the outer wall of the measurement pipe. The measurement pipes of all measurement units are connected to form a channel. That is, the electromagnetic measurement unit 11 includes the measurement pipe and functional component of the electromagnetic measurement unit 11, the near-infrared measurement unit 12 includes the measurement pipe and functional component of the near-infrared measurement unit 12, and the ultrasonic measurement unit 13 includes the measurement pipe and functional component of the ultrasonic measurement unit 13. The measurement pipes of the electromagnetic measurement unit 11, the near-infrared measurement unit 12, and the ultrasonic measurement unit 13 are connected to form a channel and are connected to the pipeline to be measured (i.e., communicate with the pipeline to be measured) for the liquid under the control of the valve of the pipeline to be measured to flow through. The measurement pipes of all measurement units can be connected in a soft connection or hard connection manner, as long as the channel formed after connection does not leak liquid.

[0052] The functional components of different measurement units are used to collect different measurement data of the liquid flowing in the corresponding measurement pipes. That is, the functional component of the electromagnetic measurement unit 11 is used to collect the measurement data of the liquid in the measurement pipe of the electromagnetic measurement unit 11, the functional component of the near-infrared measurement unit 12 is used to collect the measurement data of the liquid in the measurement pipe of the near-infrared measurement unit 12, and the functional component of the ultrasonic measurement unit 13 is used to collect the measurement data of the liquid in the measurement pipe of the ultrasonic measurement unit 13, and the measurement data collected by these three functional components are different, so that the measurement data can be determined from multiple angles and the measurement result is more accurate.

[0053] In one embodiment, the pipeline to be measured includes a valve and a pump, which are used to control whether the liquid flows and the flow rate. Optionally, the liquid can be a liquid mixed with oil and water, such as petroleum.

[0054] In one embodiment, the valve-controlled liquid measuring device further includes: a protective housing (not shown in the figure); the protective housing is sleeved outside the measuring part 10 and is used to protect the measuring part 10. Optionally, the protective housing can be fixed by using the connecting parts 20 at both ends of the measuring part 10.

[0055] In one embodiment, Figure 2 is a side view of an electromagnetic measurement unit provided in Embodiment 1 of the present invention, Figure 3 is a top view of an electromagnetic measurement unit provided in Embodiment 1 of the present invention. As Figure 2 and Figure 3 shown, the electromagnetic measurement unit 11 includes a measuring pipe 111 of the electromagnetic measurement unit 11 and functional components. The functional components of the electromagnetic measurement unit 11 include: two electrode groups 112 and two excitation coils 113; the two electrode groups 112 are symmetrically arranged on the outer wall of the measuring pipe 111 of the electromagnetic measurement unit 11, and the two excitation coils 113 are symmetrically arranged on the outer wall of the measuring pipe 111 of the electromagnetic measurement unit 11.

[0056] The intersection point of the line connecting the centers of the two excitation coils 113 and the line connecting the centers of the two electrode groups 112 is on the center line of the measuring pipe 111 of the electromagnetic measurement unit 11, and the line connecting the centers of the two excitation coils 113 is perpendicular to the line connecting the centers of the two electrode groups 112.

[0057] Specifically, one electrode group 112 includes a first electrode and a second electrode. The first electrode and the second electrode are arranged along the extension direction of the measuring pipe 111 of the electromagnetic measurement unit 11 (i.e., the liquid flow direction), and the distance between the first electrode and the second electrode is greater than or equal to 1 / 3 of the pipe length of the measuring pipe 111 of the electromagnetic measurement unit 11; the radius of the excitation coil 113 is greater than or equal to 1.5 times the wall radius of the measuring pipe 111 of the electromagnetic measurement unit 11.

[0058] The electromagnetic measurement unit 11 utilizes Faraday's law of electromagnetic induction. When a conductive fluid cuts the magnetic field lines, an induced electromotive force will be generated, and the induced electromotive force is proportional to the fluid flow rate, thereby obtaining the fluid flow rate.

[0059] Specifically, U = ∫ A v·(B×W)dA, where U is the potential difference between the first electrode and the second electrode, the vector v is the flow rate of the conductive fluid, B is the magnetic induction intensity, A is the integral over all space, and W is the vector weight function.

[0060] In one embodiment, Figure 4 FIG. Figure 4 is a side view of a near-infrared measurement unit provided in the first embodiment of the present utility model, Figure 5 and FIG. Figure 5 is a top view of a near-infrared measurement unit provided in the first embodiment of the present utility model. As shown in FIGS. Figure 4 and Figure 5 , Figure 4 and Figure 5 the near-infrared measurement unit 12 includes a measurement tube 121 and functional components of the near-infrared measurement unit 12. The functional components of the near-infrared measurement unit 12 include: at least a pair of probes 122. Figure 4 In FIG. Figure 4 , a pair of probes is drawn as an example, Figure 5 and in FIG. Figure 5 , two pairs of probes are drawn as an example.

[0061] A pair of probes 122 includes a transmitting end and a receiving end, and the transmitting end and the receiving end are symmetrically arranged on the outer wall of the measurement tube 121 of the near-infrared measurement unit 12.

[0062] Specifically, the transmitting end is a light source with an emission wavelength equal to 980 nm, such as a laser diode; the receiving end is a photodetector with a wavelength response range of 800 nm to 1700 nm. When the near-infrared measurement unit 12 is working, the near-infrared light emitted by the light source passes through the oil core, and then enters the oil film for absorption and attenuation, and then the photodetector receives the absorbed and attenuated photoelectric signal.

[0063] Stainless steel protective sleeves are arranged on the outer sides of both the light source and the photodetector. In this way, while ensuring that the probe 122 has a light guiding function, corrosion can be effectively prevented, the service life of the probe 122 can be improved, and later maintenance is facilitated.

[0064] Referring to Figure 5 shown in FIG. Figure 5 , considering the cost and measurement accuracy of the near-infrared measurement unit 12, the number of probes 122 is two pairs, and the two pairs of probes 122 are evenly distributed on the outer wall of the measurement tube 121 of the near-infrared measurement unit 12.

[0065] The near-infrared measurement unit 12 can analyze the oil film information based on the energy of transmission and scattering of near-infrared light: by measuring the light intensity signals of the photoelectric sensors upstream and downstream of the pipeline, a time series related to the light intensity is obtained, and by using the cross-correlation algorithm of the measurement results, the accurate measurement of the interface wave velocity can be achieved. The principle of near-infrared spectrum absorption is based on the Lambert-Beer Law. When a beam of parallel monochromatic light vertically passes through a certain uniform and non-scattering light-absorbing substance, its absorbance is proportional to the concentration of the light-absorbing substance and the thickness of the absorption layer (optical path).

[0066] Specifically, where P is the absorbance, I0 is the intensity of the incident light, I t is the intensity of the transmitted light, T is the transmittance or transmission ratio, l is the thickness of the absorption medium (i.e., the optical path), c is the concentration of the light-absorbing substance, and K is the absorption coefficient.

[0067] In one embodiment, Figure 6 is a side view of an ultrasonic measurement unit provided in the first embodiment of the present utility model. As Figure 6 shown, the ultrasonic measurement unit 13 includes a measuring tube 131 of the ultrasonic measurement unit 13 and functional components. The functional components of the ultrasonic measurement unit 13 include: an ultrasonic array 132.

[0068] The ultrasonic array 132 includes a plurality of ultrasonic sensors, and the plurality of ultrasonic sensors are arranged in sequence along the extension direction (i.e., the liquid flow direction) of the measuring tube 131 of the ultrasonic measurement unit 13. Due to the large difference in acoustic impedance between the oil phase and the liquid phase, when the ultrasonic waves emitted by the ultrasonic sensors enter the oil bubbles from the water phase, a reflection phenomenon will occur. When the oil bubbles are small, some ultrasonic waves can pass through the oil bubbles and radiate to the pipe wall. When the oil bubbles are large, the ultrasonic waves are basically all reflected back to the transmitting array. When the ultrasonic waves encounter reflection by the oil bubbles during propagation, there will be a peak in the echo signal in a specific direction. According to the position of the echo peak and the propagation direction of the acoustic beam, the position of the oil bubbles can be determined, and according to the size of the echo peak, the size of the bubbles can be inferred, that is, the phase holdup of the oil phase and the phase holdup of the water are measured.

[0069] In one embodiment, the measuring tube 111 of the electromagnetic measurement unit 11 is made of stainless steel; the measuring tubes 121 of the near-infrared measurement unit 12 and 131 of the ultrasonic measurement unit 13 are made of plexiglass.

[0070] The technical solution of the embodiment of the present utility model, by redesigning the measuring device for valve-controlled liquid, on the one hand, makes the measuring device for valve-controlled liquid include a measuring part and connecting parts arranged at both ends of the measuring part, and the measuring part is connected to the pipeline to be measured through the connecting parts. Once the measuring device for valve-controlled liquid is connected to the pipeline to be measured, no manual operation is required, so that man-machine separation measurement can be realized, and potential harm to the measuring personnel in a narrow space or a radiation environment can be avoided. On the other hand, the measuring part includes at least two measuring units among an electromagnetic measurement unit, a near-infrared measurement unit and an ultrasonic measurement unit, and the at least two measuring units are arranged in a preset order, so that on-demand combination of the measuring part can be realized, which is convenient for carrying and later maintenance. On the third hand, each measuring unit includes a measuring tube and functional components arranged on the outer wall of the measuring tube, and the measuring tubes of all the measuring units are connected to form a channel for the liquid under the control of the valve of the pipeline to be measured to flow through; the functional components of different measuring units are used to collect different measurement data of the liquid flowing in the corresponding measuring tube. Thus, the measurement data can be determined from multiple angles, making the measurement result more accurate. In addition, the measuring device for valve-controlled liquid has a simple structure and low cost, and has good popularization.

[0071] Embodiment Two

[0072] The embodiment of the present utility model further provides a measurement system for valve-controlled liquid. The measurement system for valve-controlled liquid includes the measurement device for valve-controlled liquid in the above embodiment, as well as a processing device and / or a display device.

[0073] In an embodiment, when the measurement system for valve-controlled liquid includes a processing device, the processing device is communicatively connected to the measurement device for valve-controlled liquid, and the processing device is configured to determine relevant parameters of the liquid according to the measurement data collected by the measurement device for valve-controlled liquid. For example, the fluid flow rate of petroleum, the phase fraction of the oil phase and the phase fraction of water, and oil film information.

[0074] Optionally, the processing device can be integrally provided with the measurement device for valve-controlled liquid; or it can be provided independently and only needs to maintain a wireless communication connection with the measurement device for valve-controlled liquid.

[0075] In an embodiment, when the measurement system for valve-controlled liquid includes a display device, the display device is communicatively connected to the measurement device for valve-controlled liquid, and the display device is configured to display the measurement data collected by the measurement device for valve-controlled liquid.

[0076] It can be understood that when the measurement system for valve-controlled liquid includes a processing device and a display device, the processing device and the display device are communicatively connected, and the display device is further configured to display the relevant parameters of the liquid determined by the processing device.

[0077] The above specific implementation manners do not constitute a limitation on the protection scope of the present utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A measuring device for valve-controlled liquid, characterized in that, Comprising: A measuring part and connecting parts arranged at both ends of the measuring part, and the measuring part accesses a pipeline to be measured through the connecting parts; The measuring part includes at least two measuring units among an electromagnetic measuring unit, a near-infrared measuring unit, and an ultrasonic measuring unit, and the at least two measuring units are arranged in a preset order; Each measuring unit includes a measuring pipe and functional components arranged on the outer wall of the measuring pipe, and the measuring pipes of all the measuring units are communicated to form a channel for the liquid under the control of the valve of the pipeline to be measured to flow through; The functional components of different measuring units are used to collect different measurement data of the liquid flowing in the corresponding measuring pipes.

2. The valve-controlled liquid measuring device according to claim 1, wherein, It further comprises: A protective housing; the protective housing is sleeved outside the measuring part for protecting the measuring part.

3. The valve-controlled liquid measuring device according to claim 1, characterized in that, The functional components of the electromagnetic measuring unit include: two electrode groups and two excitation coils; The two electrode groups are symmetrically arranged on the outer wall of the measuring pipe of the electromagnetic measuring unit, and the two excitation coils are symmetrically arranged on the outer wall of the measuring pipe of the electromagnetic measuring unit; The intersection point of the line connecting the centers of the two excitation coils and the line connecting the centers of the two electrode groups is on the center line of the measuring pipe of the electromagnetic measuring unit, and the line connecting the centers of the two excitation coils and the line connecting the centers of the two electrode groups are perpendicular to each other.

4. The valve-controlled liquid measuring device according to claim 3, wherein, One electrode group includes a first electrode and a second electrode, and the first electrode and the second electrode are arranged along the extending direction of the measuring pipe of the electromagnetic measuring unit, and the distance between the first electrode and the second electrode is greater than or equal to 1 / 3 of the pipe length of the measuring pipe of the electromagnetic measuring unit; The radius of the excitation coil is greater than or equal to 1.5 times the wall radius of the measuring pipe of the electromagnetic measuring unit.

5. The valve-controlled liquid measuring device according to claim 1, characterized in that, The functional components of the near-infrared measuring unit include: at least one pair of probes; One pair of probes includes a transmitting end and a receiving end, and the transmitting end and the receiving end are symmetrically arranged on the outer wall of the measuring pipe of the near-infrared measuring unit.

6. The valve-controlled liquid measuring device according to claim 5, characterized in that, The transmitting end is a light source with an emission wavelength equal to 980 nm; the receiving end is a photodetector with a wavelength response range of 800 nm to 1700 nm; Stainless steel protective sleeves are arranged outside both the light source and the photodetector.

7. The valve according to claim 5 or 6 for controlling a liquid measuring device, characterized in that, The number of probes is two pairs, and the two pairs of probes are evenly distributed on the outer wall of the measuring pipe of the near-infrared measuring unit.

8. The valve-controlled liquid measuring device according to claim 1, characterized in that, The functional components of the ultrasonic measuring unit include: an ultrasonic array; The ultrasonic array includes a plurality of ultrasonic sensors, and the plurality of ultrasonic sensors are arranged in sequence along the extending direction of the measuring pipe of the ultrasonic measuring unit.

9. The valve-controlled liquid measuring device according to claim 1, characterized in that, The measuring pipe of the electromagnetic measuring unit is made of stainless steel; The measuring pipes of the near-infrared measuring unit and the ultrasonic measuring unit are made of plexiglass.

10. A valve-controlled liquid measurement system, characterized in that, It includes a measuring device for controlling liquid by a valve as described in any one of claims 1-9, and a display device.

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