Plug-in flow meter

Abstract

The utility model provides a plug-in type flow meter which comprises a conversion assembly and a flow meter body. The insertion rod is provided with at least two high-pressure side pressure guiding ports and at least one low-pressure side pressure guiding port, and the high-pressure side pressure guiding ports and the low-pressure side pressure guiding ports are located on the two sides, in the same radial direction, of the insertion rod respectively; the high-pressure side pressure guiding pipe is located in the insertion rod, and the high-pressure side pressure guiding pipe communicates with the high-pressure side pressure guiding opening and the conversion assembly; the low-pressure side pressure guiding pipe is located in the insertion rod, and the low-pressure side pressure guiding pipe communicates with the low-pressure side pressure guiding opening and the conversion assembly; and the electromagnetic detection head is connected with one axial end of the insertion rod, and the electromagnetic detection head is electrically connected with the conversion assembly. The advantages of an Annubar flow meter and an electromagnetic flow meter are integrated, the defects of the electromagnetic flow meter and the Annubar flow meter are overcome, complementation of the two measurement modes is achieved, and the application range is wide.

Description

Technical Field

[0001] The utility model relates to the technical field of flow detection, and particularly relates to an insertion type flowmeter. Background Art

[0002] The electromagnetic flowmeter is a new type of flow measurement instrument that developed rapidly with the development of electronic technology in the 1950s and 1960s. The working principle of the electromagnetic flowmeter is based on Faraday's law of electromagnetic induction, and it works by measuring the induced electromotive force generated when the conductive fluid cuts the magnetic force lines during movement in the magnetic field. Generally speaking, the structure of the electromagnetic flowmeter mainly includes a converter, a measuring conduit, and a sensor. The sensor is electrically connected to the converter, the measuring conduit is located between the sensor and the converter, and the sensor includes a magnetic field coil and electrodes for generating the induced electromotive force. When in use, the measuring conduit is inserted into the pipeline so that the sensor is immersed in the fluid to be measured.

[0003] The core of the electromagnetic flowmeter is that when the conductive fluid flows in the magnetic field, due to cutting the magnetic force lines, an induced electromotive force perpendicular to the movement direction and the magnetic field direction will be generated at both ends of the conductor, and this electromotive force is proportional to the flow velocity of the conductive fluid. This principle enables the electromagnetic flowmeter to measure the volume flow of conductive media and slurries in closed pipelines, such as clear water, sewage, various acid-base and salt solutions, etc. However, when the conductivity of the fluid is relatively low, the electromagnetic flowmeter will measure inaccurately or even have no signal. Content of the Utility Model

[0004] The purpose of the utility model is to provide an insertion type flowmeter, which combines the advantages of the Annubar flowmeter and the electromagnetic flowmeter, overcomes the disadvantages of the electromagnetic flowmeter and the Annubar flowmeter, realizes the complementarity of the two measurement methods, and has a wide range of applications.

[0005] In order to achieve the above purpose, the utility model provides an insertion type flowmeter, which includes:

[0006] A conversion component;

[0007] An insertion rod, on which there are at least two high-pressure side pressure tapping ports and at least one low-pressure side pressure tapping port, and the high-pressure side pressure tapping port and the low-pressure side pressure tapping port are respectively located on both sides of the insertion rod along the same radial direction;

[0008] A high-pressure side pressure guiding pipe, which is located in the insertion rod, and the high-pressure side pressure guiding pipe is respectively communicated with the high-pressure side pressure tapping port and the conversion component;

[0009] A low-pressure side pressure guiding pipe, which is located in the insertion rod, and the low-pressure side pressure guiding pipe is respectively communicated with the low-pressure side pressure tapping port and the conversion component;

[0010] An electromagnetic detection head, which is connected to an axial end of the insertion rod, and the electromagnetic detection head is electrically connected to the conversion component.

[0011] Optionally, the conversion component is arranged at the other axial end of the insertion rod.

[0012] Optionally, the conversion component includes a pressure conversion part and an electromagnetic conversion part. The pressure conversion part is communicated with the high-pressure side pressure guiding pipe and the low-pressure side pressure guiding pipe, and the electromagnetic conversion part is electrically connected to the electromagnetic detection head.

[0013] Optionally, the conversion component includes a signal processor, and the signal processor is electrically connected to the pressure conversion part and the electromagnetic conversion part for receiving and processing signals transmitted by the pressure conversion part and the electromagnetic conversion part.

[0014] Optionally, the conversion component includes a display, and the display is electrically connected to the signal processor.

[0015] Optionally, the signal processor has an alarm unit, and the alarm unit is used to output an alarm prompt to the display.

[0016] Optionally, a coil and an electrode are provided in the electromagnetic detection head.

[0017] Optionally, the flowmeter includes a mounting base, and the mounting base is arranged on the insertion rod.

[0018] Optionally, both the high-pressure side pressure guiding pipe and the low-pressure side pressure guiding pipe extend along the axial direction of the insertion rod.

[0019] Optionally, the diameter of the high-pressure side pressure guiding port is 5 mm to 7 mm, and the diameter of the low-pressure side pressure guiding port is 5 mm to 7 mm.

[0020] In summary, the present utility model provides an insertion type flowmeter, which includes: a conversion component; an insertion rod, at least two high-pressure side pressure guiding ports and at least one low-pressure side pressure guiding port are provided on the insertion rod, and the high-pressure side pressure guiding port and the low-pressure side pressure guiding port are respectively located on two sides of the insertion rod along the same radial direction; a high-pressure side pressure guiding pipe, which is located in the insertion rod, and the high-pressure side pressure guiding pipe is respectively communicated with the high-pressure side pressure guiding port and the conversion component; a low-pressure side pressure guiding pipe, which is located in the insertion rod, and the low-pressure side pressure guiding pipe is respectively communicated with the low-pressure side pressure guiding port and the conversion component; an electromagnetic detection head, which is connected to an axial end of the insertion rod, and the electromagnetic detection head is electrically connected to the conversion component.

[0021] With the above configuration, when the present utility model is in use, the insertion rod is inserted into the fluid to be measured, and the fluid to be measured is allowed to submerge the high-pressure side pressure tapping and the low-pressure side pressure tapping, so that the fluid to be measured enters the high-pressure side pressure guiding pipe and the low-pressure side pressure guiding pipe. Then, the conversion component calculates the flow rate of the fluid to be measured by the differential pressure method, utilizing the working principle of the Annubar flowmeter. At the same time, the present utility model also has an electromagnetic detection head. When the fluid to be measured passes through the electromagnetic detection head, an induced electromotive force is generated, and the electromagnetic detection head then transmits the signal to the conversion component for processing. The conversion component calculates the flow rate of the fluid to be measured, utilizing the working principle of the electromagnetic flowmeter. This flowmeter of the present utility model simultaneously possesses the functions of the Annubar flowmeter and the electromagnetic flowmeter, combines the advantages of the Annubar flowmeter and the electromagnetic flowmeter, can overcome the shortcomings of the electromagnetic flowmeter. Even when the conductivity of the fluid to be measured is relatively low, the flow rate of the fluid to be measured can be accurately measured by utilizing the working principle of the Annubar flowmeter. It can also overcome the shortcomings of the Annubar flowmeter. When the flow rate of the fluid to be measured is small or the density changes, or when the high-pressure side pressure tapping is blocked, the flow rate detected by the electromagnetic detection head shall prevail. The present utility model realizes the complementarity of the two measurement methods and has the advantage of a wide application range. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Those of ordinary skill in the art should understand that the provided drawings are used to better understand the present utility model and do not constitute any limitation to the scope of the present utility model. Among them:

[0023] Figure 1 is a schematic diagram of the insertion type flowmeter of an embodiment of the present utility model inserted into a pipeline;

[0024] Figure 2 is Figure 1 the view from direction A of

[0025] Among them, the reference numerals are as follows:

[0026] 1 - conversion component; 2 - mounting base; 3 - low-pressure side pressure guiding pipe; 31 - low-pressure side pressure tapping; 4 - pipeline; 5 - high-pressure side pressure guiding pipe; 51 - high-pressure side pressure tapping; 6 - electromagnetic detection head; 7 - insertion rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] In this article, unless otherwise specified, the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "top", "bottom", etc. are used to indicate the orientation or position relationship based on the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation and operation, and therefore cannot be construed as a limitation to the present utility model.

[0028] The following will describe the specific embodiments of the present utility model in more detail in conjunction with the schematic diagrams. According to the following description, the advantages and features of the present utility model will be clearer. It should be noted that the attached drawings are all in a very simplified form and use non-precise scales, only for the purpose of conveniently and clearly assisting in explaining the purpose of the embodiments of the present utility model.

[0029] The following will give a preferred embodiment of the present utility model in conjunction with the attached drawings and describe it in detail.

[0030] Figure 1 is a schematic diagram of an insertion-type flowmeter inserted into a pipeline according to an embodiment of the present utility model, Figure 2 is Figure 1 the view from direction A of Figure 1 and Figure 2 Referring to

[0031] An insertion-type flowmeter provided by an embodiment of the present utility model includes a conversion assembly 1, an insertion rod 7, a high-pressure side pressure guiding pipe 5, a low-pressure side pressure guiding pipe 3, and an electromagnetic detection head 6. Exemplarily, the electromagnetic detection head 6 is connected to one axial end of the insertion rod 7, the conversion assembly 1 is arranged at the other axial end of the insertion rod 7, and the electromagnetic detection head 6 is electrically connected to the conversion assembly 1. For example, the electromagnetic detection head 6 and the conversion assembly 1 can be connected by a wire, and the wire is arranged in the insertion rod 7. It can be understood that the electromagnetic detection head 6 is provided with a coil and electrodes for generating an induced electromotive force when the fluid to be measured flows through the electromagnetic detection head 6.

[0032] The high-pressure side pressure guiding pipe 5 is located in the insertion rod 7, and the high-pressure side pressure guiding pipe 5 is respectively connected to the high-pressure side pressure guiding port 51 and the conversion component 1; for example, the high-pressure side pressure guiding pipe 5 extends along the axial direction of the insertion rod 7 and is connected to the high-pressure side pressure guiding port 51.

[0033] The low-pressure side pressure guiding pipe 3 is located in the insertion rod 7, and the low-pressure side pressure guiding pipe 3 is respectively connected to the low-pressure side pressure guiding port 31 and the conversion component 1; for example, the low-pressure side pressure guiding pipe 3 extends along the axial direction of the insertion rod 7 and is connected to the low-pressure side pressure guiding port 31.

[0034] It can be understood that the conversion component 1 includes a pressure conversion part and an electromagnetic conversion part. The pressure conversion part is connected to the high-pressure side pressure guiding pipe 5 and the low-pressure side pressure guiding pipe 3, and the electromagnetic conversion part is electrically connected to the electromagnetic detection head 6.

[0035] Furthermore, the conversion component 1 includes a signal processor. The signal processor is electrically connected to the pressure conversion part and the electromagnetic conversion part, and is used to receive and process the signals transmitted by the pressure conversion part and the electromagnetic conversion part. The pressure conversion part calculates the flow rate of the fluid to be measured by the differential pressure method, and transmits the calculated flow rate to the signal processor for processing through an electrical signal; the electromagnetic conversion part receives the electrical signal from the electromagnetic detection head 6, calculates the flow rate, and then transmits the calculation result to the signal processor for processing through an electrical signal.

[0036] The conversion component 1 further includes a display. The display is electrically connected to the signal processor, and the signal processor can transmit signals to the display, so that the first flow rate calculated by the pressure conversion part, the second flow rate calculated by the electromagnetic conversion part, the average value of the first flow rate and the second flow rate, etc. are displayed on the display.

[0037] The signal processor has an alarm unit, and the alarm unit is used to output an alarm prompt to the display. The signal processor can judge the condition of the fluid to be measured. For example, if the signal received by the electromagnetic conversion part of the signal processor changes suddenly or no signal from the electromagnetic conversion part is received, it means that the conductivity of the fluid to be measured has changed. At this time, the alarm unit of the signal processor makes an alarm prompt displayed on the display, indicating that the conductivity of the fluid to be measured is too low; if the signal received by the pressure conversion part of the signal processor becomes smaller or no signal from the pressure conversion part is received, it means that there are impurity particles in the fluid to be measured blocking the high-pressure side pressure guiding port 51. At this time, the alarm unit of the signal processor makes an alarm prompt displayed on the display, indicating that the high-pressure side pressure guiding port 51 is blocked.

[0038] Generally, the flowmeter further includes a mounting base 2, which is arranged on the insertion rod 7. For example, the mounting base 2 is located between the conversion component 1 and the insertion rod 7. The mounting base 2 is used to fix the position of the flowmeter. When using the flowmeter, the insertion rod 7 of the flowmeter needs to be inserted into the pipeline 4 through which the fluid to be measured passes. After the position of the flowmeter is determined, it can be installed on the pipeline 4 through the mounting base 2.

[0039] It can be understood that the disadvantages of the Annubar flowmeter are that when the composition of the fluid to be measured changes, the density changes accordingly, which may cause changes in the indicated value, and in the case of small flow rates, the error is large. The advantages of the Annubar flowmeter are that it is applicable to various liquids and gases and has a wide measurement range. The disadvantage of the electromagnetic flowmeter is that it cannot accurately measure or even has no signal for fluids to be measured with very low conductivity. The advantages of the electromagnetic flowmeter are that it will not cause blockage problems and is not affected by the temperature, viscosity, and density of the fluid to be measured. The present utility model simultaneously has the advantages of the electromagnetic flowmeter and the Annubar flowmeter, overcomes the disadvantages of the electromagnetic flowmeter and the Annubar flowmeter, and realizes the complementarity of the two measurement methods.

[0040] With the above configuration, when the present utility model is in use, the insertion rod 7 is inserted into the fluid to be measured, so that the fluid to be measured submerges the high-pressure side pressure tapping 51 and the low-pressure side pressure tapping 31, thereby enabling the fluid to be measured to enter the high-pressure side pressure guiding pipe 5 and the low-pressure side pressure guiding pipe 3. Then, the conversion component 1 calculates the flow rate of the fluid to be measured by the differential pressure method, utilizing the working principle of the Annubar flowmeter; at the same time, the present utility model also has an electromagnetic detection head 6. When the fluid to be measured passes through the electromagnetic detection head 6, an induced electromotive force is generated, and the electromagnetic detection head 6 then transmits the signal to the conversion component 1 for processing, and the conversion component 1 calculates the flow rate of the fluid to be measured, utilizing the working principle of the electromagnetic flowmeter. This flowmeter of the present utility model simultaneously has the functions of the Annubar flowmeter and the electromagnetic flowmeter, combines the advantages of the Annubar flowmeter and the electromagnetic flowmeter, can overcome the disadvantages of the electromagnetic flowmeter. Even when the conductivity of the fluid to be measured is low, it can accurately measure the flow rate of the fluid to be measured by utilizing the working principle of the Annubar flowmeter, and can also overcome the disadvantages of the Annubar flowmeter. When the flow rate of the fluid to be measured is small or the density changes, or when the high-pressure side pressure tapping 51 is blocked, the flow rate detected by the electromagnetic detection head 6 is used as the standard. The present utility model realizes the complementarity of the two measurement methods and has the advantage of a wide application range.

[0041] It should be noted that the references to "one embodiment", "embodiment", "specific embodiment", "some embodiments", etc. in the specification only indicate that the described embodiments may include specific features, structures, or characteristics. Moreover, such phrases do not necessarily refer to the same embodiment. In addition, when a specific feature, structure, or characteristic is described in connection with an embodiment, whether explicitly described or not, implementing such a feature, structure, or characteristic in combination with other embodiments is within the knowledge of those skilled in the relevant art.

[0042] It should be noted that the embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the embodiments, reference can be made to each other. For the systems disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple. For the relevant parts, reference can be made to the description in the method section.

[0043] It should also be noted that although the present utility model has been disclosed above with preferred embodiments, the above embodiments are not intended to limit the present utility model. For any person skilled in the art, without departing from the scope of the technical solution of the present utility model, many possible changes and modifications can be made to the technical solution of the present utility model by using the technical content disclosed above, or it can be modified into equivalent embodiments with equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model without departing from the content of the technical solution of the present utility model still fall within the scope of protection of the technical solution of the present utility model.

[0044] It should also be understood that unless otherwise specified or indicated, the terms "first", "second", "third", etc. in the specification are only used to distinguish the various components, elements, steps, etc. in the specification, rather than to represent the logical relationship or sequential relationship between the various components, elements, steps, etc.

[0045] In addition, it should be recognized that the terms described herein are only used to describe specific embodiments and are not used to limit the scope of the present utility model. It must be noted that the singular forms "a" and "an" used herein and in the appended claims include plural referents unless the context clearly dictates otherwise. For example, a reference to "a step" or "a device" means a reference to one or more steps or devices and may include sub-steps and sub-devices. All conjunctions used should be understood in their broadest sense. Also, the word "or" should be understood to have the definition of logical "or" rather than the definition of logical "exclusive or" unless the context clearly dictates otherwise. In addition, the implementation of the methods and / or devices in the embodiments of the present utility model may include performing the selected tasks manually, automatically, or in combination.

Claims

1. An insertion flow meter, characterized in that: include: Transformation components; An insert rod, wherein the insert rod is provided with at least two high-pressure side pressure inlet ports and at least one low-pressure side pressure inlet port, and the high-pressure side pressure inlet ports and the low-pressure side pressure inlet ports are respectively located on both sides of the insert rod along the same radial direction; A high-pressure side pressure-introducing pipe, which is located in the insertion rod, and the high-pressure side pressure-introducing pipe is respectively connected to the high-pressure side pressure-introducing port and the conversion assembly; A low-pressure side pressure-introducing pipe, which is located in the insertion rod, and the low-pressure side pressure-introducing pipe is respectively connected to the low-pressure side pressure-introducing port and the conversion assembly; An electromagnetic detection head is connected to one axial end of the insertion rod, and the electromagnetic detection head is electrically connected to the conversion assembly.

2. The insertion flow meter according to claim 1, characterized in that: The conversion assembly is arranged at the other axial end of the insertion rod.

3. The insertion flow meter according to claim 1, characterized in that: The conversion assembly includes a pressure conversion component and an electromagnetic conversion component. The pressure conversion component is communicated with the high-pressure side pressure-inducing pipe and the low-pressure side pressure-inducing pipe. The electromagnetic conversion component is electrically connected to the electromagnetic detection head.

4. The insertion flow meter according to claim 3, characterized in that: The conversion component includes a signal processor, which is electrically connected to the pressure conversion component and the electromagnetic conversion component and is used to receive and process signals transmitted by the pressure conversion component and the electromagnetic conversion component.

5. The insertion flow meter according to claim 4, characterized in that: The conversion component includes a display, and the display is electrically connected to the signal processor.

6. The insertion flow meter according to claim 5, characterized in that The signal processor has an alarm unit, and the alarm unit is used to output an alarm prompt to the display.

7. The insertion flow meter according to claim 1, characterized in that: The electromagnetic detection head is provided with a coil and an electrode.

8. The insertion flow meter according to claim 1, characterized in that: The flow meter includes a mounting base disposed on the insertion rod.

9. The insertion flow meter according to claim 1, characterized in that: The high-pressure side pressure-inducing pipe and the low-pressure side pressure-inducing pipe both extend along the axial direction of the insertion rod.

10. The insertion flow meter according to claim 1, characterized in that: The diameter of the high-pressure side pressure inlet is 5 mm to 7 mm, and the diameter of the low-pressure side pressure inlet is 5 mm to 7 mm.

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