A complete set of Parshall flume flow measuring device

Abstract

The present invention relates to the technical field of Parshall flume flow measurement, and in particular to a complete Parshall flume flow measurement device. The present invention provides a complete Parshall flume flow measurement device capable of adjusting the width of the throat in the Parshall flume, facilitating measurement of water velocity data at different throat widths. A complete Parshall flume flow measurement device comprises a protective cover, a flume body, a primary motor, a tail differential plate, and a central plate, etc. The upper sides of the left and right parts of the flume body are both connected to protective covers, the inner sides of the front and rear parts of the flume body are both rotatably connected to multiple tail differential plates, a central plate is rotatably connected between adjacent tail differential plates, and the upper sides of the left and right parts of the flume body are both connected to a primary motor. The present invention uses a primary motor to drive a gear set, which drives a force transmission helical gear to move, thereby controlling the operation of the tail differential plate and the central plate, thereby adjusting the width of the throat in the Parshall flume and facilitating measurement of water velocity data at different throat widths.

Description

Technical Field

[0001] The present invention relates to the technical field of Parshall flume flow measurement, in particular to a complete set of Parshall flume flow measurement device. Background Art

[0002] Parshall flume, also known as Parshall flume, is an auxiliary equipment for open channel flow measurement. It consists of three parts: upstream contraction section, short straight throat and downstream diffusion section.

[0003] Existing Parshall flume flow measurement is achieved by introducing water into the flume and using it in conjunction with an open channel flowmeter to measure the flow of water in the open channel, such as urban water supply diversion channels, thermal power plant cooling water diversion and drainage channels, sewage treatment inflow and discharge channels, etc. However, the width of the throat of the existing Parshall flume is relatively fixed and cannot be adjusted during flow measurement. The flow measurement method and flow measurement data are relatively simple. When testing the flow rate of water at different throat widths, Parshall flumes of different specifications are required, which is inconvenient to operate.

[0004] Therefore, a complete Parshall flume flow measurement device has been developed that can adjust the width of the throat in the Parshall flume to facilitate the measurement of water flow velocity data at different throat widths. Summary of the Invention

[0005] In order to overcome the disadvantage that the width of the throat of the existing Parshall flume is relatively fixed and cannot be adjusted during flow measurement, the present invention provides a complete Parshall flume flow measurement device that can adjust the width of the throat in the Parshall flume to facilitate measuring the flow velocity data of water flow at different throat widths.

[0006] The technical solution of the present invention is: a complete set of Parshall flume flow measuring device, including a protective cover, a flume body, a first-stage motor, a gear set, a first transmission assembly, a tail differential plate, a central plate, an alignment rod and an adjustment mechanism, the upper sides of the left and right parts of the flume body are connected with protective covers, the inner sides of the front and rear parts of the flume body are rotatably connected with multiple tail differential plates, the tail differential plates can automatically extend and slide to increase the adjustable range, the adjacent tail differential plates are rotatably connected with the central plate, the upper sides of the left and right parts of the flume body are connected with a first-stage motor, the output shaft of the first-stage motor is connected with a gear set, the tail differential plates are connected to the adjacent gear sets It is connected to a first transmission component, and the front and rear parts of the trough body are both slidably connected to the alignment rods. The central separation plates are slidably and rotatably connected to the adjacent alignment rods. The rotation of the output shaft of the first-stage motor drives the gear group to rotate. The rotation of the gear group drives the tail differential separation plate to rotate through the first transmission component, so that the relative tail differential separation plates are close to or away from each other, and the area of ​​the water circulation area in the trough body is adjusted to adjust the water circulation state. Then, the water circulation data after adjusting the tail differential separation plate is measured through an external water level measuring instrument or water flow rate measuring instrument. An adjustment mechanism for adjusting the central separation plate is provided on the trough body.

[0007] As an optimal technical solution of the present invention, the adjustment mechanism includes a mounting seat, a force-bearing helical gear, a force-transmitting helical gear, a force-transmitting assembly and a bidirectional screw rod. The upper sides of the left and right parts of the groove body are connected to the mounting seats, and the mounting seats are rotatably connected to the force-bearing helical gears. The tops of the gear sets are connected to the force-transmitting helical gears, and the force-transmitting helical gears are meshed with the force-bearing helical gears. The left and right parts of the groove body are rotatably connected to the bidirectional screw rods, and the force-bearing helical gears are connected to the adjacent bidirectional screw rods with a force-transmitting assembly. The screw rods are threadedly connected to the alignment rods, and the force-transmitting helical gears are driven by the gear set to rotate, and the rotational force is transmitted to the force-bearing helical gears. The force-bearing helical gears transmit the rotational force to the bidirectional screw rods through the force-transmitting assembly, and the bidirectional screw rods are controlled to rotate so that the rotation of the bidirectional screw rods controls the alignment rods to move closer or farther away from each other, and the central separation plate is adjusted and controlled to move in accordance with the movement of the tail difference separation plate.

[0008] As an optimal technical solution of the present invention, it also includes a slope lifting device, the slope lifting device includes a base plate, a secondary motor, a second transmission assembly, a head screw, a support beam, a ball joint and a lifting column. A base plate is provided at the bottom of the trough body, and the upper side of the front of the base plate is connected to the secondary motor. The upper sides of the left and right sides of the base plate are rotatably connected to the head screw, and the head screws are connected to the second transmission assembly between the output shaft of the secondary motor. The lower side of the front of the trough body is rotatably connected to multiple support beams, and the support beams are all slidably and rotatably connected to the base plate, and the support beams are all threadedly connected to adjacent head screws. The upper side of the rear of the base plate is connected to multiple lifting columns, and the top of the lifting columns is connected to ball joints, and the ball joints are all rotatably connected to the trough body. The output shaft of the secondary motor rotates and drives the head screw to rotate through the second transmission assembly to adjust the position of the support beam. The movement of the support beam causes the trough body to tilt. By cooperating with the lifting column, the overall angle of the trough body is adjusted, and the uphill flow velocity and downhill flow velocity of water flow are simulated, thereby improving the diversity of flow measurement data.

[0009] As a preferred technical solution of the present invention, a mounting pad is provided at the bottom of the base plate to increase the stability of the base plate when supporting.

[0010] As a preferred technical solution of the present invention, a tensioning pulley is provided on the left side of the base plate to assist the second transmission assembly in transmitting power.

[0011] As a preferred technical solution of the present invention, a sleeve is provided at the lower part of the support beam, the support beam is rotatably connected to the sleeve, and the sleeve is threadedly connected to the butt thread, so that the support beam can adapt to the rotation adjustment groove body.

[0012] Beneficial effects: 1. The present invention drives the gear set through a first-stage motor, and the gear set drives the force transmission helical gear to move, thereby controlling the operation of the tail differential plate and the central plate, thereby adjusting the width of the throat in the Parshall trough, and facilitating the measurement of the flow rate data of the water flow at different throat widths.

[0013] 2. The present invention controls the movement of the support beam through a secondary motor, and cooperates with the operation of the lifting column to adjust the installation slope of the Parshall flume and improve the diversity of flow measurement data. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention.

[0015] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention.

[0016] Figure 3 It is a partial three-dimensional structural schematic diagram of the present invention.

[0017] Figure 4 It is a schematic diagram of the three-dimensional structure of the adjustment mechanism of the present invention.

[0018] Figure 5 It is a schematic diagram of the front end of the three-dimensional structure of the slope climbing device of the present invention.

[0019] Figure 6 It is a schematic diagram of the rear end of the three-dimensional structure of the slope-climbing device of the present invention.

[0020] Figure 7 It is a partial three-dimensional structural schematic diagram of the slope-climbing device of the present invention.

[0021] Markings in the figure are: 0-protective cover, 1-trough body, 2-first-stage motor, 3-gear set, 4-first transmission assembly, 5-tail differential plate, 6-central plate, 7-alignment rod, 8-adjustment mechanism, 81-mounting seat, 82-force-bearing helical gear, 83-force-transmitting helical gear, 84-force-transmitting assembly, 85-bidirectional screw, 9-slope lifting device, 90-base plate, 91-secondary motor, 92-second transmission assembly, 93-alignment screw, 94-support beam, 95-ball joint, 96-lifting column. DETAILED DESCRIPTION

[0022] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, but this does not limit the present invention.

[0023] A complete set of Parshall flume flow measuring device, such as Figure 1-Figure 3As shown, it includes a trough body 1, a first-stage motor 2, a gear set 3, a first transmission assembly 4, a tail differential plate 5, a central plate 6, an alignment rod 7 and an adjustment mechanism 8. The upper sides of the left and right parts of the trough body 1 are connected to a protective cover 0. The inner sides of the front and rear parts of the trough body 1 are rotatably connected to two tail differential plates 5. The tail differential plates 5 can automatically extend and slide to increase the adjustable range. The central plate 6 is rotatably connected between adjacent tail differential plates 5. The upper sides of the left and right parts of the trough body 1 are connected to a first-stage motor 2. The output shaft of the first-stage motor 2 is connected to a gear set 3. The tail differential plates 5 are connected to the first transmission assembly 4 with the adjacent gear sets 3. The front and rear parts of the trough body 1 are slidably connected to the alignment rod 7. The central plate 6 is slidably and rotatably connected to the adjacent alignment rod 7. An adjustment mechanism 8 is provided on the trough body 1.

[0024] like Figure 1 、 Figure 2 and Figure 4 As shown, the adjustment mechanism 8 includes a mounting seat 81, a force-bearing helical gear 82, a force-transmitting helical gear 83, a force-transmitting assembly 84 and a bidirectional screw 85. The upper sides of the left and right parts of the trough body 1 are connected to the mounting seat 81, and the force-bearing helical gear 82 is rotatably connected to the mounting seat 81. The top of the gear set 3 is connected to the force-transmitting helical gear 83, and the force-transmitting helical gear 83 is engaged with the force-bearing helical gear 82. The left and right parts of the trough body 1 are rotatably connected to the bidirectional screw 85, and the force-bearing helical gear 82 is connected to the adjacent bidirectional screw 85 with a force-transmitting assembly 84, and the screw is threadedly connected to the alignment rod 7.

[0025] When it is necessary to measure the speed of the water flow in the Parshall trough, this device can be used. First, the device is placed in the speed measurement area, and then the sluice gate is opened to let the water flow into the trough body 1. The water flowing into the trough body 1 and the water flowing through or out of the central separation plate 6 are measured by a water level measuring instrument or a water flow rate measuring instrument. When measuring the speed, the protective cover 0 can block water and dust to prevent damage to the mechanical parts. The output shaft of the first-stage motor 2 rotates to drive the gear group 3 to rotate. The gear group 3 rotates through the first transmission component 4 to drive the tail differential separation plate 5 to rotate, so that the relative tail differential separation plates 5 are moved closer or farther away from each other, and the area of ​​the water flow area in the trough body 1 is adjusted to adjust the water flow state, and then the external water level is used. Measuring instruments or water flow rate measuring instruments, etc., measure the water circulation data after adjusting the tail differential plate 5, and cooperate with the force transmission bevel gear 83 to rotate through the gear group 3, and transmit the rotational force to the force-bearing bevel gear 82. The force-bearing bevel gear 82 transmits the rotational force to the two-way screw rod 85 through the force transmission component 84, and controls the two-way screw rod 85 to rotate, so that the two-way screw rod 85 rotates to control the positioning rod 7 to move closer or farther away from each other, adjust and control the central separation plate 6, and move to adapt to the movement of the tail differential separation plate 5. The different positions of the tail differential separation plate 5 and the central separation plate 6, as well as the width between them, are used to measure the speed of the water flow in the trough body 1. After the operation is completed, the first-stage motor 2 can be turned off.

[0026] like Figure 1 、 Figure 2 、 Figure 5 、 Figure 6 and Figure 7 As shown, it also includes a ramp-up device 9, which includes a base plate 90, a secondary motor 91, a second transmission assembly 92, a butt screw 93, a support beam 94, a ball joint 95 and a lifting column 96. The bottom of the tank body 1 is provided with a base plate 90, and a mounting pad is provided at the bottom of the base plate 90 to increase the stability of the base plate 90 when it is supported. The upper front side of the base plate 90 is connected to the secondary motor 91, and the upper left and right sides of the base plate 90 are both rotatably connected to the butt screw 93. The butt screw 93 is connected to the output shaft of the secondary motor 91 with a second transmission assembly 92. The left part of the base plate 90 is provided with a tensioning wheel. In order to assist the second transmission component 92 in transmitting power, a plurality of support beams 94 are rotatably connected to the lower front side of the trough body 1. The support beams 94 are all slidably and rotatably connected to the bottom plate 90. A sleeve is provided at the lower part of the support beam 94. The support beam 94 is rotatably connected to the sleeve. The sleeve is threadedly connected to the butt screw, so that the support beam 94 can adapt to the rotation and adjust the trough body 1. The support beams 94 are all threadedly connected to the adjacent butt screw 93. A plurality of lifting columns 96 are connected to the upper rear side of the bottom plate 90. The tops of the lifting columns 96 are connected to ball joints 95, and the ball joints 95 are rotatably connected to the trough body 1.

[0027] The slope-raising device 9 of the present device can be used to adjust the overall slope of the trough body 1. The output shaft of the secondary motor 91 rotates through the second transmission assembly 92 to drive the head screw 93 to rotate, thereby adjusting the position of the support beam 94. The movement of the support beam 94 causes the trough body 1 to tilt. By cooperating with the lifting column 96, the overall slope of the trough body 1 is adjusted, and the uphill flow rate or downhill flow rate of the water flow is simulated, thereby improving the diversity of the flow measurement data.

[0028] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A complete set of Parshall flume flow measuring device, characterized in that: The invention comprises a protective cover (0), a tank body (1), a primary motor (2), a gear set (3), a first transmission assembly (4), a tail differential plate (5), a central plate (6), an alignment rod (7) and an adjustment mechanism (8). The upper sides of the left and right parts of the tank body (1) are both connected with protective covers (0). The inner sides of the front and rear parts of the tank body (1) are both rotatably connected with a plurality of tail differential plates (5). The tail differential plates (5) can automatically extend and slide to increase the adjustable range. The adjacent tail differential plates (5) are rotatably connected with the central plate (6). The upper sides of the left and right parts of the tank body (1) are both connected with a primary motor (2). The output shaft of the primary motor (2) is both connected with a gear set (3). The tail differential plates (5) are both connected with adjacent gear sets (3). The first transmission assembly (4) is provided. The front and rear parts of the tank body (1) are both slidably connected to the alignment rod (7). The central separation plates (6) are all slidably and rotatably connected to the adjacent alignment rods (7). The output shaft of the first-stage motor (2) rotates to drive the gear set (3) to rotate. The gear set (3) rotates through the first transmission assembly (4) to drive the tail differential separation plates (5) to rotate, so that the opposite tail differential separation plates (5) move closer to or farther away from each other, and the area of ​​the water flow area in the tank body (1) is adjusted to adjust the water flow state. Then, the water flow data after adjusting the tail differential separation plates (5) is measured by an external water level measuring instrument or water flow rate measuring instrument. The tank body (1) is provided with an adjustment mechanism (8) for adjusting the central separation plate (6).

2. A complete Parshall flume flow measuring device according to claim 1, characterized in that: The adjusting mechanism (8) includes a mounting seat (81), a force-bearing helical gear (82), a force-transmitting helical gear (83), a force-transmitting assembly (84) and a bidirectional screw rod (85). The upper sides of the left and right parts of the groove body (1) are both connected to the mounting seat (81). The upper sides of the force-bearing helical gear (82) are both rotatably connected to the mounting seat (81). The top of the gear set (3) is both connected to the force-transmitting helical gear (83). The force-transmitting helical gear (83) is meshed with the force-bearing helical gear (82). The left and right parts of the groove body (1) are both rotatably connected to the bidirectional screw rod (85). The force-bearing helical gear (82) is both rotatably connected to the adjacent bidirectional screw rod (85). A force transmission assembly (84) is connected between the screw rods (85), and the screw rods are all threadedly connected to the alignment rod (7). The force transmission bevel gear (83) is driven by the gear group (3) to rotate, and the rotational force is transmitted to the force receiving bevel gear (82). The force receiving bevel gear (82) transmits the rotational force to the bidirectional screw rod (85) through the force transmission assembly (84), and controls the bidirectional screw rod (85) to rotate, so that the bidirectional screw rod (85) rotates to control the alignment rod (7) to move closer to or farther away from each other, and adjusts and controls the central separation plate (6) to adapt to the movement of the tail difference separation plate (5).

3. A complete Parshall flume flow measuring device as claimed in claim 2, characterized in that: The utility model also includes a slope-raising device (9), which includes a bottom plate (90), a secondary motor (91), a second transmission assembly (92), a head screw (93), a support beam (94), a ball joint (95) and a lifting column (96). The bottom of the trough body (1) is provided with a bottom plate (90), the front upper side of the bottom plate (90) is connected to the secondary motor (91), the upper sides of the left and right parts of the bottom plate (90) are both rotatably connected to the head screw (93), the head screw (93) and the output shaft of the secondary motor (91) are connected to the second transmission assembly (92), the front lower side of the trough body (1) is rotatably connected to a plurality of support beams (94), and the support beams (94) are all slidable with the bottom plate (90). The invention is rotatably connected, the support beams (94) are all connected to the adjacent butt screws (93) by threaded connection, the upper rear side of the bottom plate (90) is connected to a plurality of lifting columns (96), the tops of the lifting columns (96) are all connected to ball joints (95), and the ball joints (95) are all rotatably connected to the trough body (1), the output shaft of the secondary motor (91) rotates through the second transmission assembly (92) to drive the butt screws (93) to rotate, and the position of the support beam (94) is adjusted. The support beam (94) moves so that the trough body (1) is tilted, and the overall angle of the trough body (1) is adjusted by cooperating with the lifting columns (96), so as to simulate the uphill flow rate and downhill flow rate of the water flow, thereby improving the diversity of the flow measurement data.

4. A complete Parshall flume flow measuring device as claimed in claim 3, characterized in that: A mounting pad is provided at the bottom of the base plate (90), which can increase the stability of the base plate (90) when supporting.

5. A complete Parshall flume flow measuring device as claimed in claim 3, characterized in that: A tension wheel is provided on the left side of the bottom plate (90) for assisting the second transmission assembly (92) in transmitting power.

6. A complete Parshall flume flow measuring device as claimed in claim 3, characterized in that: The lower part of the support beam (94) is provided with a sleeve, the support beam (94) is rotatably connected to the sleeve, and the sleeve is threadedly connected to the head thread, so that the support beam (94) can be adapted to rotate and adjust the groove body (1).

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