Measuring device for non-full-flow sewage pipeline

Abstract

The invention relates to the technical field of sewage pipeline flow velocity measurement, and discloses a measuring device for a non-full-flow sewage pipeline, and the device comprises a mounting support which comprises a transverse plate disposed at the top of the sewage pipeline and a horizontal adjustment mechanism used for adjusting the horizontal state of the transverse plate; the laser distance measuring device is arranged on the transverse plate and located in the center of the top of the sewage pipeline, and the output end of the laser distance measuring device faces sewage fluid in the sewage pipeline and is used for obtaining the liquid level height value of the sewage fluid; the radar speed measuring device is arranged on the transverse plate, the radar speed measuring device is located in the center of the top of the sewage pipeline, and the output end of the radar speed measuring device faces sewage fluid in the sewage pipeline and is used for obtaining the clockwise flow velocity value of the sewage fluid; the data processing device is arranged on the transverse plate, the data processing device is used for obtaining the instantaneous flow of the sewage fluid according to the preset relation between the liquid level height value and the clockwise flow velocity value, and the device can be suitable for accurate flow measurement of the non-full-flow sewage pipeline.

Description

Technical Field

[0001] The invention relates to the technical field of sewage pipe flow velocity measurement, in particular to a measuring device for a non-full flow sewage pipe. Background Art

[0002] During the use of sewage pipes, pipe leakage often occurs due to the aging of the pipes. In order to detect leakage, it is necessary to continuously monitor the flow in the pipes.

[0003] In the prior art, rotor flowmeters, electromagnetic flowmeters or ultrasonic flowmeters are usually used for measurement. The rotor flowmeter requires that there should be no large impurities in the liquid to be measured, otherwise it may affect the operation of the rotor. The electromagnetic flowmeter also has some limitations. The external magnetic field may interfere with the electromagnetic flowmeter, and bubbles and gas entrainment will lead to incorrect measurements; there is a minimum conductivity limit; the fluid needs to fill the pipe; it is not suitable for flow measurement of non-full flow sewage pipes. Ultrasonic flowmeters cannot measure fluid flow containing continuously mixed bubbles that affect ultrasonic propagation, high solid particle content or large solid particle diameter. Therefore, existing measuring devices are difficult to adapt to the precise measurement of non-full flow sewage pipes. Summary of the invention

[0004] The object of the present invention is to provide a measuring device for a non-full flow sewage pipe, aiming to solve or improve at least one of the above-mentioned technical problems.

[0005] To achieve the above object, the present invention provides the following solution: The present invention provides a measuring device for a non-full flow sewage pipe, comprising:

[0006] The mounting bracket comprises a horizontal plate arranged on the top of the sewage pipe and a level adjustment mechanism for adjusting the horizontal state of the horizontal plate;

[0007] A laser distance measuring device is arranged on the horizontal plate, the laser distance measuring device is located at the top center of the sewage pipe, and the output end of the laser distance measuring device faces the sewage fluid in the sewage pipe, and is used to obtain the liquid level height value of the sewage fluid;

[0008] A radar speed measuring device is arranged on the horizontal plate, the radar speed measuring device is located at the top center of the sewage pipe, and the output end of the radar speed measuring device faces the sewage fluid in the sewage pipe, and is used to obtain the forward flow velocity value of the sewage fluid;

[0009] A data processing device is arranged on the transverse plate, and is used for obtaining the instantaneous flow rate of the sewage fluid according to a preset relationship between the liquid level value and the forward flow velocity value.

[0010] Optionally, the level adjustment mechanism includes:

[0011] A level, disposed on the horizontal plate;

[0012] A pair of adjusting bolts are symmetrically arranged on the horizontal plate with respect to the level.

[0013] Optionally, it also includes a sleeve, which is coaxially arranged in the sewage pipe, the outer wall of the sleeve is gap-matched with the inner wall of the sewage pipe, and the cross plate is slidably arranged on the sleeve through a sliding mechanism.

[0014] Optionally, the sliding mechanism includes:

[0015] A guide rail is arranged on the casing, the guide rail comprises a first stage and a second stage, the first stage is located in the sewage pipe and parallel to the sewage pipe, and the second stage is located in an inspection well connected to the sewage pipe and parallel to the inspection well;

[0016] A connecting member, slidably disposed on the guide rail, the connecting member being used to connect with the transverse plate;

[0017] A driving member is arranged at an end of the second stage away from the first stage, and the driving member is used to drive the connecting member to slide along the guide rail.

[0018] Optionally, when the first stage is located at the water inlet of the sewage pipe, the length of the guide rail is not less than five times the inner diameter of the sewage pipe.

[0019] Optionally, when the first stage is located at the water outlet of the sewage pipe, the length of the guide rail is not less than twice the inner diameter of the sewage pipe.

[0020] Optionally, a locking device is provided on the first stage, and the locking device is detachably connected to the transverse plate.

[0021] Optionally, a signal transmitting device is also provided on the transverse plate, and the signal transmitting device is connected to the data processing device.

[0022] Optionally, the driving member includes a motor, and a retractable pull rope device is provided at the output end of the motor, and the pull rope device is connected to the connecting member.

[0023] Optionally, the installation angle of the radar speed measuring device is sixty degrees.

[0024] The present invention discloses the following technical effects: a radar speed measuring device can avoid being disturbed by the properties of the liquid inside the sewage pipe, accurately measure the surface flow velocity of the fluid to obtain an accurate forward flow velocity value of the sewage fluid, and a laser ranging device can be used to obtain an accurate liquid level height value of the sewage fluid. A data processing device is used to obtain the instantaneous flow rate of the sewage fluid based on a preset relationship between the liquid level height value and the forward flow velocity value, which is suitable for accurate flow measurement of non-full flow sewage pipes. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0026] Figure 1 It is the installation schematic diagram of the present invention;

[0027] Figure 2 It is a schematic diagram of the mounting bracket structure of the present invention;

[0028] Figure 3 This is a schematic structural diagram of the mounting bracket of the present invention from another viewing angle;

[0029] Figure 4 It is a schematic diagram of the sleeve and mounting bracket structure of the present invention.

[0030] In the figure: 1. Sewage pipe; 2. Horizontal plate; 3. Laser ranging device; 4. Radar speed measuring device; 5. Data processing device; 6. Level; 7. Adjusting bolt; 8. Casing; 9. Guide rail; 10. Inspection well. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] Reference Figure 1-Figure 4 The present invention provides a measuring device for a non-full flow sewage pipe, comprising:

[0034] The mounting bracket includes a horizontal plate 2 arranged on the top of the sewage pipe 1 and a horizontal adjustment mechanism for adjusting the horizontal state of the horizontal plate;

[0035] The laser distance measuring device 3 is arranged on the horizontal plate 2. The laser distance measuring device 3 is located at the top center of the sewage pipe 1. The output end of the laser distance measuring device 3 faces the sewage fluid in the sewage pipe 1, and is used to obtain the liquid level value of the sewage fluid;

[0036] A radar speed measuring device 4 is arranged on the horizontal plate 2. The radar speed measuring device 4 is located at the top center of the sewage pipe 1. The output end of the radar speed measuring device 4 faces the sewage fluid in the sewage pipe 1, and is used to obtain the forward flow velocity value of the sewage fluid.

[0037] The data processing device 5 is disposed on the transverse plate 2 and is used to obtain the instantaneous flow rate of the sewage fluid according to a preset relationship between the liquid level value and the forward flow velocity value.

[0038] The radar speed measuring device 4 can avoid being disturbed by the liquid properties inside the sewage pipe 1, and accurately measure the surface flow velocity of the fluid to obtain the accurate forward flow velocity value of the sewage fluid. The laser ranging device 3 can obtain the accurate liquid level height value of the sewage fluid. The data processing device 5 is used to obtain the instantaneous flow rate of the sewage fluid based on the preset relationship between the liquid level height value and the forward flow velocity value. It is suitable for accurate flow measurement of non-full flow sewage pipes 1.

[0039] In one embodiment of the present invention, the level adjustment mechanism comprises:

[0040] A level 6, arranged on the horizontal plate 2;

[0041] A pair of adjusting bolts 7 are symmetrically arranged on the horizontal plate 2 with respect to the level 6 .

[0042] The position of the cross plate 2 is adjusted by adjusting the bolts 7 until the tops of the two adjusting bolts 7 are in contact with the inner upper wall of the sleeve 8, so that the cross plate 2 is in a horizontal state, thereby allowing the laser ranging device 3 and the radar speed measuring device 4 to be located at the top center of the sewage pipe 1.

[0043] In one embodiment of the present invention, it also includes a sleeve 8, which is coaxially arranged in the sewage pipe 1, the outer wall of the sleeve 8 and the inner wall of the sewage pipe 1 are gap-matched, and the cross plate 2 is slidably arranged on the sleeve 8 through a sliding mechanism.

[0044] By installing the sleeve 8 on the top of the sewage pipe 1 , it is possible to avoid installing the laser distance measuring device 3 and the radar speed measuring device 4 on the main flow section inside the sewage pipe 1 .

[0045] In one embodiment of the present invention, the sliding mechanism comprises:

[0046] A guide rail 9 is arranged on the casing 8. The guide rail 9 includes a first stage and a second stage. The first stage is located in the sewage pipe 1 and is parallel to the sewage pipe 1. The second stage is located in an inspection well 10 connected to the sewage pipe 1 and is parallel to the inspection well 10.

[0047] A connecting member is slidably disposed on the guide rail 9, and is used to connect with the cross plate 2;

[0048] The driving member is arranged at an end of the second stage away from the first stage, and is used to drive the connecting member to slide along the guide rail 9.

[0049] In one embodiment of the present invention, the driving member includes a motor, and a retractable pull rope device is provided at the output end of the motor, and the pull rope device is connected to the connecting member.

[0050] In one embodiment of the present invention, a locking device is provided on the first stage, and the locking device is detachably connected to the transverse plate 2 .

[0051] In order to prevent the pipe section from suddenly overflowing due to factors such as rainfall and causing damage to the device, when the reading of the laser ranging device 3 is less than a certain value (set according to actual conditions), the data processing device 5 sends a command to the locking device to disconnect the locking device from the connecting piece, and then sends a command to the motor to tighten the pull rope device through the operation of the motor, so that the cross plate 2 will be retracted along the guide rail 9 until it reaches the inspection well 10.

[0052] In one embodiment of the present invention, since the radar speed measuring device 4 requires a stable water flow state, when the first stage is located at the water inlet of the sewage pipe 1, the length of the guide rail 9 is not less than five times the inner diameter of the sewage pipe 1. When the first stage is located at the water outlet of the sewage pipe 1, the length of the guide rail 9 is not less than two times the inner diameter of the sewage pipe 1.

[0053] Furthermore, by providing measuring devices at both the water inlet and the water outlet of the sewage pipe 1 to monitor the flow rate, data support can be provided for leakage monitoring of the sewage pipe 1 .

[0054] In one embodiment of the present invention, a signal transmitting device is also provided on the horizontal plate 2, and the signal transmitting device is connected to the data processing device 5 for sending the measured data to the control terminal. The connection method between the signal transmitting device and the control terminal is the existing technology and will not be repeated here.

[0055] In one embodiment of the present invention, the installation angle of the radar speed measuring device 4 is sixty degrees.

[0056] Furthermore, when the diameter of the sewage pipe 1 is 300, the applicable maximum filling degree is 0.55.

[0057] Furthermore, the improved measuring device of the present invention is installed at the inspection wells at both ends of the long straight sewage pipe 1 where no pipe diameter change occurs, and each confluence pipe needs to be installed at the confluence inspection well.

[0058] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, 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 invention.

[0059] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A measuring device for a non-full flow sewage pipe, characterized in that: include: A mounting bracket comprises a horizontal plate (2) arranged on the top of a sewage pipe (1) and a level adjustment mechanism for adjusting the horizontal state of the horizontal plate; A laser distance measuring device (3) is arranged on the horizontal plate (2), the laser distance measuring device (3) is located at the top center of the sewage pipe (1), and the output end of the laser distance measuring device (3) faces the sewage fluid in the sewage pipe (1) to obtain the liquid level value of the sewage fluid; A radar speed measuring device (4) is arranged on the horizontal plate (2), the radar speed measuring device (4) is located at the top center of the sewage pipe (1), and the output end of the radar speed measuring device (4) faces the sewage fluid in the sewage pipe (1) to obtain the forward flow velocity value of the sewage fluid; A data processing device (5) is arranged on the transverse plate (2), and the data processing device (5) is used to obtain the instantaneous flow rate of the sewage fluid according to a preset relationship between the liquid level value and the forward flow velocity value.

2. A measuring device for a non-full flow sewage pipe according to claim 1, characterized in that: The level adjustment mechanism comprises: A level (6) is arranged on the horizontal plate (2); A pair of adjusting bolts (7) are symmetrically arranged on the horizontal plate (2) with respect to the level gauge (6).

3. A measuring device for a non-full flow sewage pipe according to claim 1, characterized in that: It also comprises a sleeve (8) which is coaxially arranged in the sewage pipe (1), the outer wall of the sleeve (8) being clearance-matched with the inner wall of the sewage pipe (1), and the transverse plate (2) being slidably arranged on the sleeve (8) via a sliding mechanism.

4. A measuring device for a non-full flow sewage pipe according to claim 3, characterized in that: The sliding mechanism comprises: A guide rail (9) is arranged on the sleeve (8), the guide rail (9) comprises a first stage and a second stage, the first stage is located in the sewage pipe (1) and is parallel to the sewage pipe (1), and the second stage is located in an inspection well (10) connected to the sewage pipe (1) and is parallel to the inspection well (10); A connecting member, slidably disposed on the guide rail (9), the connecting member being used to be connected to the transverse plate (2); A driving member is arranged at an end of the second stage away from the first stage, and the driving member is used to drive the connecting member to slide along the guide rail (9).

5. A measuring device for a non-full flow sewage pipe according to claim 4, characterized in that: When the first stage is located at the water inlet of the sewage pipe (1), the length of the guide rail (9) is not less than five times the inner diameter of the sewage pipe (1).

6. A measuring device for a non-full flow sewage pipe according to claim 4, characterized in that: When the first stage is located at the water outlet of the sewage pipe (1), the length of the guide rail (9) is not less than twice the inner diameter of the sewage pipe (1).

7. A measuring device for a non-full flow sewage pipe according to claim 4, characterized in that: A locking device is provided on the first stage, and the locking device is detachably connected to the transverse plate (2).

8. A measuring device for a non-full flow sewage pipe according to claim 1, characterized in that: The transverse plate (2) is also provided with a signal transmitting device, and the signal transmitting device is connected to the data processing device (5).

9. A measuring device for a non-full flow sewage pipe according to claim 4, characterized in that: The driving member comprises a motor, and a retractable pull rope device is arranged at the output end of the motor, and the pull rope device is connected to the connecting member.

10. A measuring device for a non-full flow sewage pipe according to claim 1, characterized in that: The installation angle of the radar speed measuring device (4) is sixty degrees.

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