Liquid level measuring device of open channel flowmeter

Abstract

The utility model discloses a liquid level measuring device for an open channel flowmeter, which belongs to the technical field of hydraulic engineering and comprises a triangular section main body structure, a measuring component is arranged on one side of the triangular section main body structure, and a steel ruler is connected to a triangular sharp corner opposite to the side, provided with the measuring component, of the triangular section main body structure through a connecting groove. A limiting hole is formed in the top end of the triangular-section main body structure, and a grip assembly is arranged in the limiting hole; the triangular-section main body structure can effectively prevent the steel ruler from deforming in the using process, and the structural stability is enhanced.

Description

Technical Field

[0001] The utility model belongs to the technical field of water conservancy projects, and particularly relates to a device for measuring the liquid level of an open-channel flowmeter. Background Technique

[0002] An open-channel flowmeter is a common liquid flow measurement instrument, which is widely used in various production and life. Measuring the open-channel liquid level is a key step in the calibration process of the open-channel flowmeter. The common method is the manual ruler-dropping measurement method. Using a steel ruler that has passed traceability verification, the liquid level is directly measured according to the requirements of technical specifications.

[0003] Manual ruler-dropping measurement is an artificial measurement method, which is realized by using a steel ruler. The water-testing paste is smeared at the corresponding position of the steel ruler in advance, and the liquid level height is manually read by using the color-changing demarcation line generated by the liquid surface in the channel and the water-testing paste on the steel ruler.

[0004] However, due to its own structural characteristics, the steel ruler is prone to deformation when force is applied during the measurement process, and it is very difficult to ensure that the steel ruler is in a vertical state during the measurement process. Especially when measuring the liquid level of an open-channel flowmeter with a large-size throat, the liquid flow rate is fast and the liquid level is high, and it is very difficult for the steel ruler to maintain a vertical and stable state to reach the bottom of the open channel, which affects the measurement accuracy. The measurement reliability of this measurement method is closely related to the level of the operator, and the possibility of human error is relatively large. Therefore, overall, the reliability and working efficiency of this measurement method are relatively low. Moreover, the large-size open channel has a large size and a low installation position, and it is very difficult for the operator to manually lower the steel ruler to the bottom of the open channel to complete the measurement. The operation difficulty is high, the reading is difficult, and it poses a great safety hazard to the operator.

[0005] Therefore, how to provide a device for measuring the liquid level of an open-channel flowmeter is an urgent problem to be solved by those skilled in the art. Content of the Utility Model

[0006] The main purpose of the utility model is to provide a device for measuring the liquid level of an open-channel flowmeter to solve the above technical problems. The triangular cross-section main body structure set in the device can effectively prevent the steel ruler from deforming during use and enhance the structural stability.

[0007] To achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A device for measuring the liquid level of an open-channel flowmeter includes a triangular cross-section main body structure. A measuring component is arranged on one side of the triangular cross-section main body structure. A steel ruler is connected through a connecting groove at the triangular sharp corner opposite to the side where the measuring component is arranged on the triangular cross-section main body structure. A limiting hole is arranged at the top of the triangular cross-section main body structure, and a handle component is arranged in the limiting hole.

[0009] Further, the measuring assembly includes limiters respectively fixed at the upper and lower ends of the main body structure with a triangular cross-section. Two guide rails are connected between the two limiters. A slider is slidably connected to the two guide rails. One side of the slider away from the main body structure with a triangular cross-section is connected with a floating ball. The top end of the slider is connected to one end of a float ruler. The other end of the float ruler penetrates through the limiter at the top end of the main body structure with a triangular cross-section. The limiter at the top end of the main body structure with a triangular cross-section is connected to one end of a liquid level indicator. The other end of the liquid level indicator is sleeved on the float ruler.

[0010] Further, the grip assembly includes a telescopic rod and a grip. The bottom end of the telescopic rod is fixedly arranged in the limit hole, and the top end of the telescopic rod is fixedly connected with the grip.

[0011] Further, a horizontal adjuster is arranged at the top end of the grip.

[0012] Further, an anti-slip pad is also arranged at the bottom end of the main body structure with a triangular cross-section.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The main body structure with a triangular cross-section set in the utility model can effectively prevent the steel straight ruler from deforming during use and enhance the structural stability;

[0015] When the main body structure with a triangular cross-section is in use, one angle of the triangle faces the upstream of the water flow for water reception, which will not affect the original flow field, can avoid the measurement error caused by the influence of the water flow impact height. At the same time, since the width of the rear end of the triangular cross-section structure is greater than the diameter of the floating ball, it can provide a relatively stable buoyancy space for the floating ball to be protected, avoid the impact of the medium flow on the floating ball, and reduce the fluctuation of the floating ball caused by the water flow impact;

[0016] The horizontal adjuster at the upper end of the grip can ensure that the device is in a vertical state during the measurement process and reduce the measurement error caused by the offset of the straight ruler;

[0017] When measuring the liquid level of an open channel with a relatively low position, the telescopic rod can be lengthened, a suitable lower ruler position can be selected for measurement, the horizontal state of the measuring device can be adjusted, and the measurement can be completed by reading the value on the float ruler, ensuring the reliability of the measurement data and the safety of the operator;

[0018] A rubber thin pad is installed at the rear part of the lower end of the main body structure with a triangular cross-section to prevent the measuring device from slipping during measurement. Description of the Drawings

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the provided drawings.

[0020] Figure 1 It is a front structural schematic diagram of the present invention.

[0021] Figure 2 It is a side structural schematic diagram of the present invention.

[0022] Figure 3 It is a cross-sectional structural schematic diagram of the present invention.

[0023] Among them, 1 - steel straight ruler, 2 - triangular cross-section main body structure, 3 - liquid level indicator, 4 - telescopic rod, 5 - grip, 6 - horizontal adjuster, 7 - stopper, 8 - float ruler, 9 - guide rail, 10 - float ball, 11 - slider, 12 - anti-slip pad, 13 - limit hole. Specific embodiments

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0025] As Figures 1 to 3 shown, the present invention provides a liquid level measuring device for an open channel flowmeter, including a triangular cross-section main body structure 2. A measuring component is arranged on one side of the triangular cross-section main body structure 2. A steel straight ruler 1 is connected through a connecting groove at the triangular sharp corner opposite to the side where the triangular cross-section main body structure 2 is provided with the measuring component. A limit hole 13 is arranged at the top of the triangular cross-section main body structure 2, and a grip component is arranged in the limit hole 13.

[0026] In this embodiment, the measurement assembly includes limiters 7 respectively fixed at the upper and lower ends of the triangular cross-section main structure 2. Two guide rails 9 are connected between the two limiters 7. A slider 11 is slidably connected to the two guide rails 9. One side of the slider 11 away from the triangular cross-section main structure 2 is connected with a floating ball 10. The top end of the slider 11 is connected to one end of a float ruler 8. The other end of the float ruler 8 penetrates through the limiter 7 at the top end of the triangular cross-section main structure 2. The limiter 7 at the top end of the triangular cross-section main structure 2 is connected to one end of a liquid level indicator 3. The other end of the liquid level indicator 3 is sleeved on the float ruler 8. The limiter 7 is specifically a limit plate for controlling the sliding height of the slider 11 to prevent the slider 11 from disengaging from the guide rail 9. The guide rail 9 is used to guide the slider 11. The floating ball 10 is used to drive the slider 11 to move up and down. The float ruler 8 is used to cooperate with the liquid level indicator 3 to measure the liquid level height.

[0027] In this embodiment, the handle assembly includes a telescopic rod 4 and a handle 5. The bottom end of the telescopic rod 4 is fixedly arranged in the limit hole 13. The top end of the telescopic rod 4 is fixedly connected with a handle 5. The handle 5 is used to assist the user in firmly grasping the measuring device, which is specifically a "middle" - shaped structure in this embodiment. The telescopic rod 4 can assist the handle 5 in adjusting the height.

[0028] In this embodiment, a horizontal adjuster 6 is arranged at the top end of the handle 5. Specifically, the horizontal adjuster 6 can be a level. The horizontal adjuster 6 is used to assist in laying the measuring device flat as a whole to make the reading more accurate.

[0029] In this embodiment, an anti-slip pad 12 is further arranged at the bottom end of the triangular cross-section main structure 2. Specifically, the anti-slip pad 12 can wrap a part of the lower half of the triangular cross-section main structure 2, which can effectively increase the friction between the device and the bottom of the open channel to prevent slipping.

[0030] Working principle: Select a suitable position for the lower ruler according to the measurement requirements. Stretch the telescopic rod 4 to an appropriate length according to the installation height of the open channel flowmeter. Vertically place the measuring device into the fluid, with the front end of the steel ruler 1 facing the upstream of the liquid flow direction and one end of the float ruler 8 facing the downstream of the liquid flow direction. Adjust the level of the measuring device through the horizontal adjuster 6 to keep it in a vertical state. Observe the floating ball 10 and start reading after the floating ball 10 stabilizes. When measuring an open channel with a smaller size, since the position of the bottom of the open channel is relatively shallow and the tester's line of sight is not blocked by space during measurement, the value on the steel ruler 1 can be directly read. When measuring an open channel with a larger size, it is inconvenient to directly read the value on the steel ruler 1 due to the relatively deep bottom of the open channel. The liquid level height value can be read through the indicating scale on the float ruler 8. After reading and recording several groups of data, vertically take out the device upward, dry the liquid, and retract the telescopic rod 4 to complete the measurement.

[0031] The various 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 various embodiments, reference can be made to each other. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple. For related parts, reference can be made to the description in the method section.

[0032] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An open-channel flowmeter liquid level measurement device, characterized in that, It includes a triangular cross-section main body structure (2), a measuring component is arranged on one side of the triangular cross-section main body structure (2), a steel straightedge (1) is connected through a connecting groove at the triangular sharp corner opposite to the side where the measuring component of the triangular cross-section main body structure (2) is arranged, a limiting hole (13) is arranged at the top of the triangular cross-section main body structure (2), and a grip component is arranged in the limiting hole (13).

2. The liquid level measuring device of an open channel flowmeter according to claim 1, characterized in that, The measuring component includes limiters (7) respectively fixed at the upper and lower ends of the triangular cross-section main body structure (2), two guide rails (9) are connected between the two limiters (7), a slider (11) is slidably connected on the two guide rails (9), a floating ball (10) is connected to the side of the slider (11) away from the triangular cross-section main body structure (2), the top end of the slider (11) is connected to one end of a float ruler (8), the other end of the float ruler (8) penetrates through the limiter (7) at the top of the triangular cross-section main body structure (2), the limiter (7) at the top of the triangular cross-section main body structure (2) is connected to one end of a liquid level indicator (3), and the other end of the liquid level indicator (3) is sleeved on the float ruler (8).

3. The liquid level measuring device of an open channel flowmeter according to claim 1, characterized in that, The grip component includes a telescopic rod (4) and a grip (5), the bottom end of the telescopic rod (4) is fixedly arranged in the limiting hole (13), and the top end of the telescopic rod (4) is fixedly connected to the grip (5).

4. The liquid level measuring device of an open channel flowmeter according to claim 3, characterized in that, A horizontal adjuster (6) is arranged at the top end of the grip (5).

5. The liquid level measuring device of an open channel flowmeter according to claim 1, characterized in that, An anti-slip pad (12) is further arranged at the bottom end of the triangular cross-section main body structure (2).

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