CN206132149U - Slope cropland earth channel combination formula tipping bucket flowmeter - Google Patents

Abstract

The utility model discloses a combined dumping bucket flowmeter for slope farmland soil ditch flow, which comprises multi-stage vertical water pipes, horizontal water pipes, a PLC controller, and a dumping bucket flowmeter whose number of stages corresponds to that of the vertical water pipes. The dumping bucket flowmeters are respectively designed Below the corresponding series of vertical water pipes, the bottom of the previous vertical water pipe is connected to the top of the subsequent vertical water pipe through a horizontal water pipe; The bottom of the last vertical water pipe is directly equipped with a tipping bucket flowmeter; except for the last level, there are reversing valves at the bottom of all vertical water pipes, and the tipping bucket flowmeter and all reversing valves of each level are connected to the PLC controller. The PLC controller can control the switching of the reversing valve and adopt different series of tipping bucket flowmeters to count. The device can automatically switch counting according to the small, medium and large changes of the soil ditch flow. It can not only accurately measure the water volume under the dripping state, but also measure the water volume under the large flow rate. It has a wide range of applications and strong practicability.

Description

A combined tipping bucket flowmeter for soil ditch flow in slope cultivated land

technical field

The utility model relates to a flow meter, in particular to a combined tipping bucket flow meter for slope farmland soil ditch flow, which belongs to the fields of water conservancy engineering and agronomy.

Background technique

Soil channel flow is formed by atmospheric precipitation and flows into rivers, lakes or oceans through different paths in the watershed. Soil gully flow can be divided into surface soil gully flow, soil midflow and groundwater flow according to its formation and flow path. Under the same intensity rainfall conditions, the existence of the slope of the sloping cultivated land will cause the water, soil and nutrients on the slope to move down the slope with the flow of soil ditch, or seep into the groundwater through the soil profile through seepage, leaching, etc. into the receiving water body, causing a large amount of sediment migration and nutrient loss, resulting in eutrophication of the water body. Therefore, accurate acquisition of information on the change of soil gully flow in slope farmland within a certain period of precipitation is the basis for dynamic research on soil and water balance and nutrient loss in slope farmland.

At present, water meters are widely used flow measurement devices in agricultural water conservancy projects, but the water meters do not rotate and do not measure when the water is dripping. The flow meter for calculating the water flow in the soil ditch with a side-tipping bucket measuring device, such as the "automatic metering device for surface soil ditch flow (application number CN201310243468.9)" invented by Zhang Guilong et al. (2013). In some cases, the problem of not being able to turn over in time is easy to occur; there are also ultrasonic liquid flowmeters based on signal detection, such as the ultrasonic flowmeter (application number: CN200780048729.4) invented by Daisuke Besho (2007), but this type of device The liquid pressure in the circular pipe is required to be stable, and the measurement accuracy can only be guaranteed when the liquid flow rate is large. Due to the large change in the soil ditch flow during the rainfall process, it is difficult for the ultrasonic flowmeter to guarantee the global accuracy during a rainfall process. In addition, due to the sediment phenomenon in the soil channel flow of slope farmland, the use of ordinary small flowmeters is easy to cause blockage, which cannot meet the measurement requirements of soil channel flow in slope farmland.

Utility model content

Aiming at the deficiencies of the existing technology, the utility model proposes a combination type of slope farmland soil channel flow with simple structure, accurate measurement, easy installation and implementation, and can automatically switch counting methods along with the small, medium and large changes in water volume. Tipper flow meter.

The utility model adopts the following technical solutions:

A combined tipping bucket flowmeter for soil ditch flow in slope cultivated land, characterized in that it includes multi-stage vertical water pipes, horizontal water pipes, a PLC controller, and a tipping bucket flowmeter with the number of stages corresponding to the vertical water pipes, and the tipping bucket flowmeters are respectively It is located below the vertical water pipes of the corresponding series. The bottom of the vertical water pipes of the previous stage is connected with the top of the vertical water pipes of the next stage through horizontal water pipes. The combination of the horizontal water pipes and the vertical water pipes is stepped, which is convenient for liquid The top of the first-stage vertical water pipe is connected to the gutter of the slope cultivated land to be measured, and the bottom of the last-stage vertical water pipe is directly equipped with a tipping bucket flowmeter; Reversing valve, the reversing valve can realize that the water in the vertical water pipe of this level flows into the tipping bucket flowmeter below it or flows into the vertical water pipe of the next level through the horizontal water pipe, and the tipping bucket flowmeter and all the reversing valves of each level are connected The PLC controller can control the switching of the reversing valve through the PLC controller to use different stages of tipping bucket flowmeters to count and whether to store and display the data of the level of tipping bucket flowmeters.

Preferably, the tipping bucket flowmeter includes a sump, a double-sided tipping bucket and two photoelectric counters, and the sump is arranged at the bottom of each vertical water pipe to collect the water flowing out of the reversing valve, and the sump There is an outlet hole at the bottom of the tank, and the double-sided tipping bucket made of mechanical lever principle is set under the outlet hole. The double-sided tipping bucket is arranged symmetrically. Two photoelectric counters are respectively located under the two ends of the double-sided dumping bucket.

As a preference, precision adjusters are respectively provided under both ends of the double-sided dumping bucket, the photoelectric counter is located on the top of the precision adjuster, and the precision adjuster is a cylinder whose top height can be adjusted.

As a preference, the bottom of the tipping bucket flowmeter is provided with a bottom plate with a screw hole, the precision adjuster is a screw, the screw is provided with two nuts, the screw passes through the screw hole of the bottom plate, and the two nuts are respectively located on the bottom plate. Fix the precision adjuster up and down. By adjusting the two nuts of the precision adjuster on the bottom plate, the precision adjuster can be raised or lowered to adjust the measurement accuracy. The bottom plate is provided with drainage holes, which can be used for drainage. The water flowing down from the double-sided tipping bucket can also be used to take water samples. The double-sided tipping bucket is made by using the principle of mechanical leverage, and has high sensitivity. The precision adjuster can adjust different precisions according to needs.

Preferably, the tipping bucket flowmeter has 2-8 stages, the multi-stage tipping bucket flowmeter is used in combination with different sizes and specifications, and the reversing valve is a two-way active pressure valve whose size matches the corresponding tipping bucket flowmeter.

The beneficial effects of the utility model are:

1. It can automatically switch the counting mode according to the small, medium and large changes of the water volume. It can not only accurately measure the water volume under the dripping state, but also measure the water volume under the large flow rate. It has a wide range of applications and strong practicability.

2. Using the principle of mechanical leverage, the precision regulator of the tipping bucket flowmeter can adjust different precisions, the lowest precision is 1L, and the highest precision can reach 5ml.

3. The mechanical counting method is adopted to avoid the problem of electronic humidity and is not easy to be damaged.

4. It can meet the measurement requirements of soil flow and groundwater flow in sloping farmland, and is also suitable for surface soil gully flow measurement when there is not much rainfall.

Description of drawings

Fig. 1 is a structural representation of the utility model.

In Figure 1, 1-horizontal water pipe, 2-two-way active pressure valve, 3-tipping bucket flowmeter, 4-double-sided dumping bucket, 5-precision regulator, 6-drainage hole, 7-vertical water pipe, 8-collecting tank , 9-photoelectric counter, 10-rotating shaft, 11-bottom plate.

detailed description

Below in conjunction with accompanying drawing and specific embodiment the utility model is described further. In the figure, the water pipe, the two-way active pressure valve 2, the tipping bucket flowmeter 3, the double-sided tipping bucket 4, the precision regulator 5, and the drainage hole 6.

Referring to Fig. 1, the utility model comprises water pipe, two-way movable pressure valve 2, tipping bucket flowmeter 3. The water pipe is divided into a horizontal water pipe 1 and a vertical water pipe 7, the two-way active pressure valve 2 is located at the intersection of the horizontal water pipe 1 and the vertical water pipe 7, and the tipping bucket flowmeter 3 is located at the lower end of the two-way active pressure valve 2.

Referring to Fig. 1, the water pipe is in the shape of steps to facilitate the flow of liquid under the action of gravity.

Referring to Figure 1, the tipping bucket flowmeter 3 includes a collecting tank 8, a double-sided tipping bucket 4 and two photoelectric counters 9, the upper part of the collecting tank 8 is used to collect the water flowing out from the two-way active pressure valve 2, and the collecting tank 8 There is an outflow hole at the bottom, and the double-sided tipping bucket 4 made of the principle of mechanical leverage is located below the outflow hole. 10 is free to rotate, and two photoelectric counters 9 are respectively located under the two ends of the double-sided tipping bucket.

Accuracy adjusters 5 are respectively provided under both ends of the double-sided dumping bucket 4, and the photoelectric counter 10 is located on the top of the accuracy adjuster 5, and the accuracy adjuster 5 is a cylinder whose top height can be adjusted.

The bottom of the tipping bucket flowmeter 3 is provided with a bottom plate 11 with a screw hole, and the precision adjuster 5 is a screw rod on which two nuts are arranged. The precision regulator 5 is fixed up and down, and the precision regulator can be raised or lowered by adjusting the two nuts of the precision regulator on the bottom plate 11. The bottom plate 11 is provided with a drain hole 6, and the drain hole 6 can be used for Drain away the water that flows down from the double-side tipping bucket 4, and also can be used for taking water samples. The double-sided tipping bucket 4 is made by utilizing the principle of mechanical leverage, and has high sensitivity. The precision adjuster can adjust different precisions according to needs. The tipping bucket flowmeter 3 can be selected from three different specifications: large, medium and small.

Referring to Fig. 1, according to the specifications of the tipping bucket flowmeter 3 connected to the lower end of the two-way active pressure valve 2, two types of large-sized two-way active pressure valve and medium-sized two-way active pressure valve can be selected for corresponding installation.

Work process of the present utility model is as follows:

When the rainfall begins, the flow rate in the soil ditch is small, and the water entering the water pipe is in a dripping state. At this time, the water pressure is low. The branch of the tipping bucket flowmeter is closed, and the small water flow flows into the small tipping bucket flowmeter for counting; as time goes by, the rainfall gradually increases, and the soil ditch flow also increases. At this time, the water pressure increases, and the large tipping bucket flowmeter The two-way active pressure valve is not opened, the branch of the large tipping bucket flowmeter is closed, the medium two-way active pressure valve is opened, the branch of the medium tipping bucket flowmeter is opened, and the water flows into the medium tipping bucket flowmeter for counting; when the rainfall continues to increase , when the water pressure increases, the large two-way active pressure valve opens, the medium two-way active pressure valve closes, and the water flows into the large tipping bucket flowmeter for counting; when the rainfall is about to end and the rainfall decreases again, the large two-way active pressure valve Both the medium and medium two-way active pressure valves are closed, and the water flows into the small tipping bucket flowmeter for counting...All the water counts are the sum of the counts of the three branches, so as to achieve high-precision measurement.

The functions of the utility model are as follows: a combined tipping bucket flowmeter for slope soil and ditch flow has a simple structure, accurate measurement, and is easy to install and implement; it can automatically switch the counting mode according to the small, medium, and large changes in water volume, and can accurately measure The water volume in the dripping state can also measure the water volume under a large flow rate, which has a wide range of applications and strong practicability; it adopts a mechanical counting method to effectively avoid electronic moisture problems, is not easy to damage, and has a long service life.

The scope of protection of the utility model is not limited to the fixed-size components of the combined tipping bucket flowmeter for sloping soil and ditch flow, and more demands can be met by changing the corresponding parameters. Apparently, those skilled in the art can make some modifications to the utility model in terms of structural dimensions and number of components without departing from the scope and spirit of the utility model. If these modifications fall within the scope of the utility model claims and their equivalent technologies, the intent of the utility model also includes these modifications.

The specific embodiments described herein are only examples to illustrate the spirit of the present invention. Those skilled in the technical field to which the utility model belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the utility model or go beyond the appended claims defined range.

Claims (5)

1. a kind of sloping upland earth channel combined type tipping bin flowmeter, it is characterised in that：Including multi-stage vertical water pipe, horizontal water pipe, PLC and series tipping bin flowmeter corresponding with vertical water pipe, the tipping bin flowmeter is respectively arranged on corresponding series and erects To the lower section of water pipe, it is connected by horizontal water pipe with the top of the vertical water pipe of its rear stage in the vertical water pipe bottom of previous stage, the The vertical water pipe top of one-level is connected with the sloping upland collecting gutter of current to be measured, and the vertical water pipe bottom of afterbody is directly provided with tipping bucket Flowmeter；All vertical water pipe bottoms are equipped with reversal valve in addition to afterbody, and reversal valve can be realized in the vertical water pipe of the level Water flows into tipping bin flowmeter below or flows into the vertical water pipe of its next stage by horizontal water pipe, per one-level tipping bin flowmeter PLC is accessed with all reversal valves, different series tipping bucket streams are adopted by the controllable commutation Vavle switching of PLC Gauge counts and whether stores this grade of tipping bin flowmeter data of display.

2. a kind of sloping upland earth channel combined type tipping bin flowmeter according to claim 1, it is characterised in that：The tipping bucket stream Gauge includes afflux groove, bilateral tipping bucket and two photoelectric counters, and the afflux groove is used for located at per the vertical water pipe bottom of one-level The water flowed out from reversal valve is collected, afflux trench bottom is provided with flow-out hole, the bilateral tipping bucket made using mechanical type lever principle is set In flow-out hole lower section, bilateral tipping bucket is symmetrical arranged, and a rotating shaft is provided with its bottom centre, and bilateral tipping bucket can freely turn around the shaft Dynamic, two photoelectric counters are respectively arranged on bilateral tipping bucket two ends lower section.

3. a kind of sloping upland earth channel combined type tipping bin flowmeter according to claim 2, it is characterised in that：The double-side side-overturn Bucket two ends are respectively arranged below with precise regulator, and the photoelectric counter is located at precise regulator top, the precise regulator To can adjust the cylinder of its overhead height.

4. a kind of sloping upland earth channel combined type tipping bin flowmeter according to claim 3, it is characterised in that the tipping bucket stream Gauge bottom is provided with the base plate with screw, and the precise regulator is a screw rod, and the screw rod is provided with two nuts, and screw rod is worn The screw of base plate is crossed, two nuts respectively up and down fix precise regulator positioned at base plate, by the upper and lower precision of regulating base board Two nuts of adjuster, it is possible to achieve precise regulator is risen or fallen so as to adjust measuring accuracy, the base plate is provided with Osculum, the osculum can be used to drain the water that bilateral tipping bucket flows down, it can also be used to water sampling.

5. a kind of sloping upland earth channel combined type tipping bin flowmeter according to claim 4, it is characterised in that：The tipping bucket stream Gauge has 2-8 levels, and the multistage tipping bin flowmeter is applied in combination using different size specification, and the reversal valve is bi-directional movable pressure Power valve, its size matches with corresponding tipping bin flowmeter.