Liquid flow monitoring device

Abstract

The utility model belongs to the field of flow monitoring, and particularly relates to a liquid flow monitoring device which comprises a support, a mounting rod, a sealing ring, a Doppler ultrasonic flowmeter and an ultrasonic mud level meter. The support is used for being installed on a pipeline outside a detection opening, one end of the installation rod is connected with the support, the other end of the installation rod can be inserted into the pipeline through the detection opening, and the installation rod serves as a carrier for installing the Doppler ultrasonic flowmeter and the ultrasonic mud level meter. The sealing ring is used for being arranged between the installation rod and the detection opening so as to seal the gap between the installation rod and the detection opening. The Doppler ultrasonic flowmeter is arranged on the mounting rod and used for monitoring the liquid level and the flow speed in the pipeline. The ultrasonic mud level meter is arranged on the mounting rod and used for monitoring the depth of sludge at the bottom of the pipeline. On the basis of the known size of the pipeline, the liquid level in the pipeline monitored by the Doppler ultrasonic flowmeter and the sludge depth monitored by the ultrasonic sludge level meter are matched, and the liquid flow in the pipeline in the non-full pipe state and when sundries are deposited at the bottom of the pipeline can be calculated.

Description

Technical Field

[0001] The present application relates to the technical field of flow monitoring, and in particular to a liquid flow monitoring device. Background Art

[0002] The current large-pipe liquid flow monitoring is mostly done by flow meters or water meters installed on the surface of the pipeline. The main principle is to measure the flow rate of the liquid in the pipeline through electromagnetic induction, and then multiply it by the area of ​​the pipeline to calculate the flow rate. Usually, it can only measure the full pipe flow. If there is a non-full pipe, the monitoring result is not the true flow of the liquid in the pipe. In addition, when there is mud at the bottom of the pipeline, the flow monitoring result will also be seriously distorted. In order to solve the monitoring problems of non-full pipe flow and monitoring distortion caused by accumulation of debris at the bottom of the pipeline, a liquid flow monitoring device that is suitable for non-full pipe state and can avoid distortion of flow measurement results caused by accumulation of debris at the bottom of the pipeline must be designed. Utility Model Content

[0003] The embodiment of the present application provides a liquid flow monitoring device for solving the technical problem that the flow monitoring result is distorted when the pipeline is not full of liquid and debris accumulates at the bottom of the pipeline.

[0004] To achieve the above-mentioned purpose, the present application provides a liquid flow monitoring device for monitoring the liquid flow in a pipeline, wherein a detection port is provided on the pipeline, and the liquid flow monitoring device comprises:

[0005] A support, used for being installed on the pipeline outside the detection port;

[0006] A mounting rod, one end of which is connected to the support and the other end of which can be inserted into the interior of the pipeline through the detection port;

[0007] A sealing ring, used to be arranged between the mounting rod and the detection port to seal the gap between the mounting rod and the detection port;

[0008] A Doppler ultrasonic flowmeter, disposed on the mounting rod, the Doppler ultrasonic flowmeter being used to monitor the liquid level and flow velocity in the pipeline; and

[0009] An ultrasonic mud level meter is arranged on the mounting rod, and the ultrasonic mud level meter is used to monitor the mud depth at the bottom of the pipeline.

[0010] Optionally, a wire passing channel is provided in the support, the interior of the mounting rod is hollow, and the interior of the mounting rod is connected to the wire passing channel, and the cable of the Doppler ultrasonic flowmeter and the cable of the ultrasonic mud level meter are led out through the interior of the mounting rod and the wire passing channel.

[0011] Optionally, a first wiring hole connected to the interior of the mounting rod is provided at one end of the mounting rod away from the support, and a second wiring hole connected to the interior of the mounting rod is provided in the middle of the mounting rod. The Doppler ultrasonic flowmeter is arranged at the end of the mounting rod away from the support, and the cable of the Doppler ultrasonic flowmeter penetrates into the interior of the mounting rod through the first wiring hole and is led out from the wire passage. The ultrasonic mud level meter is arranged in the middle of the mounting rod, and the cable of the ultrasonic mud level meter penetrates into the interior of the mounting rod through the second wiring hole and is led out from the wire passage.

[0012] Optionally, a seal is provided between the cable of the Doppler ultrasonic flowmeter and the first wiring hole, and between the cable of the ultrasonic mud level meter and the second wiring hole.

[0013] Optionally, the support includes a lower base, an upper cover plate covering the lower base, and a fastener connecting the lower base and the upper cover plate, the lower base is used to be fixed on the pipe outside the detection port, one end of the mounting rod is fixed to the side of the lower base facing the pipe, the lower base is provided with a through hole connected to the interior of the mounting rod, the lower base is provided with a lower arc groove on the side away from the pipe, one end of the lower arc groove is connected to the through hole, and the other end extends to the edge of the lower base, and the upper cover plate is provided with an upper arc groove corresponding to the lower arc groove on the side facing the lower base, and the lower arc groove and the upper arc groove are arranged to form the wire passing channel.

[0014] Optionally, a welding leg is fixed to a side of the lower base facing away from the upper cover plate, and the lower base can be welded to the pipeline through the welding leg.

[0015] Optionally, the support further includes a sealing gasket, and the sealing gasket is arranged between the lower base and the upper cover plate.

[0016] Optionally, the fastener includes a plurality of screws, a plurality of threaded holes are provided on the edge of the lower base, a plurality of mounting holes corresponding to the plurality of threaded holes are provided on the edge of the upper cover plate, and the plurality of screws pass through the plurality of mounting holes one by one and are screwed to the threaded holes.

[0017] Optionally, the liquid flow monitoring device further comprises a data acquisition processor, which is disposed on the support and electrically connected to the Doppler ultrasonic flowmeter and the ultrasonic mud level meter.

[0018] The beneficial effect of the liquid flow monitoring device provided by the present application is that: compared with the prior art, the liquid flow monitoring device of the present application is provided with a Doppler ultrasonic flowmeter for monitoring the liquid level in the pipeline and an ultrasonic mud level meter for monitoring the silt depth at the bottom of the pipeline. Based on the known size of the pipeline, in combination with the liquid level in the pipeline monitored by the Doppler ultrasonic flowmeter and the silt depth monitored by the ultrasonic mud level meter, the liquid flow in the pipeline when the pipeline is not full and debris is deposited at the bottom of the pipeline can be calculated. In addition, a sealing ring is provided between the mounting rod and the detection port to seal the gap between the mounting rod and the detection port. The use of the liquid flow monitoring device can not only measure the flow in the non-full pipe state, but also ensure the good sealing of the pipeline, while eliminating the influence of debris such as silt deposited at the bottom of the pipeline on the water level measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] in:

[0021] Figure 1 is a schematic diagram of installing a liquid flow monitoring device on a pipeline according to an embodiment of the present application;

[0022] Figure 2 It is a schematic diagram of the connection between the lower base and the mounting rod in the liquid flow monitoring device shown in one embodiment of the present application;

[0023] Figure 3 yes Figure 2 A schematic top view of the structure shown;

[0024] Figure 4 It is a structural schematic diagram of a liquid flow monitoring device shown in an embodiment of the present application, with the upper cover plate facing the lower base;

[0025] Figure 5 It is a schematic diagram of the state of a liquid flow monitoring device in actual use shown in one embodiment of the present application.

[0026] Description of main component symbols:

[0027] 10. Pipeline;

[0028] 100, support; 101, wire passage; 110, lower base; 1101, through hole; 1102, lower arc-shaped groove; 1103, threaded hole; 111, welding foot; 120, upper cover; 1201, upper arc-shaped groove; 1202, mounting hole; 130, fastener; 140, sealing gasket;

[0029] 200, mounting rod; 201, first wiring hole; 202, second wiring hole;

[0030] 300, sealing ring;

[0031] 400, Doppler ultrasonic flowmeter;

[0032] 500, Ultrasonic mud level meter;

[0033] 600. Data acquisition processor. DETAILED DESCRIPTION

[0034] In order to facilitate the understanding of the present application, the present application will be described more comprehensively with reference to the relevant drawings below. The preferred embodiments of the present application are provided in the drawings. However, the present application can be implemented in many other different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0035] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0036] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0039] It should also be noted that, in the embodiments of the present application, the same figure mark is used to represent the same component or the same part. For the same parts in the embodiments of the present application, the figure may only mark one of the parts or components as an example. It should be understood that the figure mark also applies to other identical parts or components.

[0040] As described in the background art, the existing flowmeter or water meter installed on the surface of the pipeline has the problem of distorted flow monitoring results when the pipeline is not full of liquid and debris is accumulated at the bottom of the pipeline.

[0041] In order to solve the above problems, an embodiment of the present application provides a liquid flow monitoring device for monitoring the liquid flow in a pipeline. The pipeline is provided with a detection port, such as Figure 1 As shown, the liquid flow monitoring device includes a support 100, a mounting rod 200, a sealing ring 300, a Doppler ultrasonic flowmeter 400 and an ultrasonic mud level meter 500. The support 100 is used to be installed on the pipeline 10 outside the detection port, one end of the mounting rod 200 is connected to the support 100, and the other end can be inserted into the inside of the pipeline 10 through the detection port, and the mounting rod 200 is used as a carrier for installing the Doppler ultrasonic flowmeter 400 and the ultrasonic mud level meter 500. The sealing ring 300 is used to be arranged between the mounting rod 200 and the detection port to seal the gap between the mounting rod 200 and the detection port. The Doppler ultrasonic flowmeter 400 is arranged on the mounting rod 200 to monitor the liquid level and flow rate in the pipeline 10. The ultrasonic mud level meter 500 is arranged on the mounting rod 200 to monitor the silt depth at the bottom of the pipeline 10.

[0042] In the embodiment of the present application, the liquid flow monitoring device is provided with a Doppler ultrasonic flowmeter 400 for monitoring the liquid level in the pipeline 10 and an ultrasonic mud level meter 500 for monitoring the depth of the mud at the bottom of the pipeline 10. Based on the known size of the pipeline 10, the liquid level in the pipeline 10 monitored by the Doppler ultrasonic flowmeter 400 and the mud depth monitored by the ultrasonic mud level meter 500 can calculate the liquid flow in the pipeline when the pipeline is not full and debris is deposited at the bottom of the pipeline 10. In addition, a sealing ring 300 is provided between the mounting rod 200 and the detection port to seal the gap between the mounting rod 200 and the detection port. The use of the liquid flow monitoring device can not only measure the flow in the non-full pipe state, but also ensure the good sealing of the pipeline 10, while eliminating the influence of debris such as silt deposited at the bottom of the pipeline 10 on the water level measurement.

[0043] Combination Figure 5 As shown, the flow rate calculation formula of the liquid flow monitoring device when the liquid in the pipeline 10 is not full and sludge is accumulated at the bottom of the pipeline 10 is: Q = (S1 + S2 + S4 - S3) · V

[0044] in:

[0045] d=2R-H

[0046]

[0047] β=2π-2α

[0048]

[0049]

[0050] S2=R 2 cosαsinα

[0051]

[0052]

[0053] Where, S1-the sector area corresponding to the angle β, unit: mm 2 ;

[0054] S2- Area of ​​upper triangle AOB, unit: mm 2 ;

[0055] S3-The sector area corresponding to the angle δ, unit: mm 2 ;

[0056] S4- Area of ​​lower triangle COD, unit: mm 2 ;

[0057] V-flow velocity measured by Doppler ultrasonic flowmeter 400, in m / s;

[0058] Q - liquid flow through the circular pipe 10, unit m 3 / s;

[0059] d-the distance between the center of the liquid surface and the top of the pipe 10, in mm;

[0060] H - liquid level measured by Doppler ultrasonic flowmeter 400, unit: mm;

[0061] h-silt thickness measured by ultrasonic mud level meter 500, unit: mm;

[0062] R-pipe 10 radius, in mm;

[0063] α - angle between the radius corresponding to the chord AB and the center line of the cross section of the pipe 10, in degrees;

[0064] β-large sector arc, unit degree;

[0065] δ - fan angle corresponding to the silt length, unit degree.

[0066] It can be understood that when h is 0, that is, when there is no silt accumulation at the bottom of the pipeline 10, the flow calculation formula of the pipeline 10 is:

[0067] Q=(S1+S2)·V

[0068] In one embodiment, if Figure 1 As shown, a wire passage 101 is provided in the support 100, the interior of the mounting rod 200 is hollow, and the interior of the mounting rod 200 is connected to the wire passage 101, and the cable of the Doppler ultrasonic flowmeter 400 and the cable of the ultrasonic mud level meter 500 are led out through the interior of the mounting rod 200 and the wire passage 101.

[0069] Through the above design, the interior of the hollow mounting rod 200 is reserved for the cables of the Doppler ultrasonic flowmeter 400 and the ultrasonic mud level meter 500 to pass through, which can protect the cables and prevent excessive flow velocity or debris in the water from damaging the cables.

[0070] Specifically, a first wiring hole 201 communicating with the interior of the mounting rod 200 is provided at one end of the mounting rod 200 away from the support 100, a second wiring hole 202 communicating with the interior of the mounting rod 200 is provided at the middle of the mounting rod 200, the Doppler ultrasonic flowmeter 400 is provided at one end of the mounting rod 200 away from the support 100, the cable of the Doppler ultrasonic flowmeter 400 penetrates into the interior of the mounting rod 200 through the first wiring hole 201 and is led out from the wire passage 101, the ultrasonic mud level meter 500 is provided at the middle of the mounting rod 200, the cable of the ultrasonic mud level meter 500 penetrates into the interior of the mounting rod 200 through the second wiring hole 202 and is led out from the wire passage 101. Among them, the mounting rod 200 can be a steel pipe or a PVC pipe with a closed lower end and an open side.

[0071] In a specific embodiment, a seal (not shown in the figure) is provided between the cable of the Doppler ultrasonic flowmeter 400 and the first wiring hole 201 and between the cable of the ultrasonic mud level meter 500 and the second wiring hole 202. The seal (such as a rubber ring) can seal the gap between the first wiring hole 201 and the second wiring hole 202 and the cable to prevent the liquid in the pipeline 10 from leaking out through this gap.

[0072] In a specific embodiment, Figure 1-Figure 4As shown, the support 100 includes a lower base 110, an upper cover plate 120 covering the lower base 110, and a fastener 130 connecting the lower base 110 and the upper cover plate 120. The lower base 110 is used to be fixed on the pipe 10 outside the detection port. One end of the mounting rod 200 is fixed to the side of the lower base 110 facing the pipe 10. The lower base 110 is provided with a through hole 1101 connected to the interior of the mounting rod 200. A lower arc-shaped groove 1102 is provided on the side of the lower base 110 facing away from the pipe 10. One end of the lower arc-shaped groove 1102 is connected to the through hole 1101, and the other end extends to the edge of the lower base 110. An upper arc-shaped groove 1201 corresponding to the lower arc-shaped groove 1102 is provided on the side of the upper cover plate 120 facing the lower base 110. The lower arc-shaped groove 1102 and the upper arc-shaped groove 1201 are surrounded to form a wire-passing channel 101.

[0073] The support 100 adopts a split structure, which makes it easy for the cables installed inside the mounting rod 200 to pass out from the cable passage 101 .

[0074] Preferably, a welding leg 111 is fixed to the side of the lower base 110 facing away from the upper cover plate 120, and the lower base 110 can be welded to the pipe 10 through the welding leg 111. Fixing the lower base 110 to the pipe 10 by welding is relatively simple to operate and reliable. Further, the lower end of the welding leg 111 is in an arc shape that can fit the outer wall of the circular pipe 10 to ensure the reliability of the welding between the welding leg 111 and the pipe 10.

[0075] Furthermore, the support 100 further includes a sealing gasket 140 , which is arranged between the lower base 110 and the upper cover 120 .

[0076] In a more specific embodiment, in combination Figure 1 , Figure 3 and Figure 4 As shown, the fastener 130 includes a plurality of screws, a plurality of threaded holes 1103 are provided at the edge of the lower base 110, a plurality of mounting holes 1202 corresponding one-to-one to the plurality of threaded holes 1103 are provided at the edge of the upper cover plate 120, and a plurality of screws are respectively passed through the plurality of mounting holes 1202 and are screwed into the threaded holes 1103.

[0077] Screws are used as fasteners 130 to connect the lower base 110 and the upper cover 120 , which is simple and reliable, and convenient for assembling and disassembling the lower base 110 and the upper cover 120 .

[0078] In one embodiment, if Figure 1 As shown, the liquid flow monitoring device further includes a data acquisition processor 600 , which is disposed on the support 100 and is electrically connected to the Doppler ultrasonic flowmeter 400 and the ultrasonic mud level meter 500 .

[0079] The data acquisition processor 600 can be configured to remotely send the liquid temperature, liquid level and flow rate data monitored by the Doppler ultrasonic flowmeter 400 and the silt thickness data information measured by the ultrasonic mud level meter 500 to the cloud server, and the real-time flow data can be obtained by implanting the above flow calculation formula on the built cloud platform. The cloud platform supports simultaneous login on the mobile phone and computer, and can automatically generate line charts of flow and other data according to requirements, which is convenient for viewing and data analysis.

[0080] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0081] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A liquid flow monitoring device for monitoring the liquid flow in a pipeline, wherein a detection port is provided on the pipeline, characterized in that: The liquid flow monitoring device comprises: A support, used for being installed on the pipeline outside the detection port; A mounting rod, one end of which is connected to the support and the other end of which can be inserted into the interior of the pipeline through the detection port; A sealing ring, used to be arranged between the mounting rod and the detection port to seal the gap between the mounting rod and the detection port; A Doppler ultrasonic flowmeter, disposed on the mounting rod, the Doppler ultrasonic flowmeter being used to monitor the liquid level and flow velocity in the pipeline; and An ultrasonic mud level meter is arranged on the mounting rod, and the ultrasonic mud level meter is used to monitor the mud depth at the bottom of the pipeline.

2. The liquid flow monitoring device according to claim 1, characterized in that: A wire-passing channel is provided in the support, the interior of the mounting rod is hollow, and the interior of the mounting rod is communicated with the wire-passing channel, and the cable of the Doppler ultrasonic flowmeter and the cable of the ultrasonic mud level meter are led out through the interior of the mounting rod and the wire-passing channel.

3. The liquid flow monitoring device according to claim 2, characterized in that: A first wiring hole communicating with the interior of the mounting rod is provided at one end of the mounting rod away from the support, and a second wiring hole communicating with the interior of the mounting rod is provided at the middle portion of the mounting rod. The Doppler ultrasonic flowmeter is provided at the end of the mounting rod away from the support, and the cable of the Doppler ultrasonic flowmeter penetrates into the interior of the mounting rod through the first wiring hole and is led out from the wire passage. The ultrasonic mud level meter is provided at the middle portion of the mounting rod, and the cable of the ultrasonic mud level meter penetrates into the interior of the mounting rod through the second wiring hole and is led out from the wire passage.

4. The liquid flow monitoring device according to claim 3, characterized in that: A sealing member is provided between the cable of the Doppler ultrasonic flowmeter and the first wiring hole, and between the cable of the ultrasonic mud level meter and the second wiring hole.

5. The liquid flow monitoring device according to any one of claims 2 to 4, characterized in that: The support includes a lower base, an upper cover plate covered on the lower base, and a fastener connecting the lower base and the upper cover plate, the lower base is used to be fixed on the pipe outside the detection port, one end of the mounting rod is fixed to the side of the lower base facing the pipe, the lower base is provided with a through hole connected to the interior of the mounting rod, the lower base is provided with a lower arc groove on the side away from the pipe, one end of the lower arc groove is connected to the through hole, and the other end extends to the edge of the lower base, and the upper cover plate is provided with an upper arc groove corresponding to the lower arc groove on the side facing the lower base, and the lower arc groove and the upper arc groove are surrounded to form the wire passing channel.

6. The liquid flow monitoring device according to claim 5, characterized in that: A welding leg is fixed to a side of the lower base facing away from the upper cover plate, and the lower base can be welded to the pipeline through the welding leg.

7. The liquid flow monitoring device according to claim 5, characterized in that: The support further comprises a sealing gasket, and the sealing gasket is arranged between the lower base and the upper cover plate.

8. The liquid flow monitoring device according to claim 5, characterized in that: The fasteners include a plurality of screws, a plurality of threaded holes are provided at the edge of the lower base, a plurality of mounting holes corresponding to the plurality of threaded holes are provided at the edge of the upper cover plate, and the plurality of screws pass through the plurality of mounting holes corresponding to each other and are screwed to the threaded holes.

9. The liquid flow monitoring device according to claim 1, characterized in that: The liquid flow monitoring device also includes a data acquisition processor, which is arranged on the support and electrically connected to the Doppler ultrasonic flowmeter and the ultrasonic mud level meter.

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