CN206114222U - Dykes and dams piping seepage intensity detection device - Google Patents

Abstract

The utility model relates to the field of piping and leakage detection, and discloses a piping and leakage intensity detection device for dams, which comprises an upper cylinder, a lower cone, a sliding resistor, a floating ball, a DC power supply, a sensitive ammeter, and an adjustable elbow. The upper cylinder and the lower cone are connected by an adjustable elbow. There are water openings at the bottom of the upper cylinder and the top of the lower cone. The sliding resistance is set on the side wall of the upper cylinder, and the sliding piece of the sliding resistance is connected to the floating ball. The sliding resistance is connected to the signal device through wires. The signal device includes a DC power supply and a sensitive ammeter. The sensitive ammeter is used to distinguish the intensity of piping and leakage. Based on the Bernoulli equation and buoyancy, the utility model uses a floating ball that can float with the water surface to change the resistance value of the control sliding resistance, and observes the change through a sensitive ammeter, so that the piping and leakage strength of the embankment can be detected quickly and non-destructively. Low investment, simple structure, easy for engineers to master and use.

Description

Embankment Piping Leakage Intensity Detection Device

technical field

The utility model relates to a device for detecting the leakage strength of embankment piping. The device of the utility model is suitable for detecting the leakage intensity of embankments and dams of small reservoirs.

Background technique

Leakage and piping of reservoir dams are important causes of dam failure, which will cause serious losses to the national economy, social stability and harmony, environment and ecology. Therefore, how to accurately and quickly find out the position and strength of the water inlet of dam leakage or piping is very important, and piping, leakage detection methods and equipment devices are also born thereupon.

The existing piping and leakage detection devices correspond to the three detection methods of manual inspection, geological drilling and geophysical exploration. Manual inspection basically does not require instruments and devices, but manual inspection is a waste of manpower and it is difficult to find hidden dangers; geological drilling is destructive and the detection results are partial; geophysical exploration results are more accurate, but the structure of the detection device is complex and costly. Difficult to grasp how to use it. The existing piping and leakage detection devices cannot meet the requirements of rapidity, non-destructiveness, low cost, simple structure, and ease of use by engineering personnel.

Utility model content

The purpose of the utility model is to provide a quick, non-destructive, low cost, simple structure, easy for engineering personnel to master and use the piping and leakage intensity detection device.

The purpose of this utility model is achieved through the following technical solutions, the embankment piping leakage intensity detection device includes an upper cylinder, a lower cone, a sliding resistor, a floating ball, a signal device, and an adjustable elbow;

Both the bottom of the upper cylinder and the top of the lower cone have water openings, the upper cylinder and the lower cone are connected by an adjustable elbow, and the sliding resistance is set on the side wall of the upper cylinder;

The slider of the sliding resistance is connected to the floating ball, and the floating ball moves up and down with the water level to change the size of the sliding resistance. The sliding resistance is connected to the signal device through the wire. The signal device includes a DC power supply and a sensitive ammeter. The sensitive ammeter is used to distinguish piping, Leak strength.

Preferably, the upper cylinder is connected with adjustable elbow bolts; the lower cone is connected with adjustable elbow bolts, and the bend of the adjustable elbow can be adjusted.

Preferably, there are lugs on the upper part of the upper column, and the lugs have holes, and the lugs are fixed on the outer side of the wall of the upper column with bolts.

Preferably, the side wall of the upper cylinder is connected with the sliding resistor by bolts.

Preferably, the diameter of the upper cylinder is equal to 4 times the diameter of the water opening, the length of the upper cylinder is equal to 8 times the diameter of the water opening, the diameter of the upper bottom of the lower cone is equal to the diameter of the water opening, and the diameter of the lower bottom of the lower cone is It is equal to 20 times the diameter of the water opening, the length of the lower cone is equal to 15 times the diameter of the water opening, the diameter of the float is equal to 3 times the diameter of the water opening, the float floats freely up and down with the change of the water level, and the diameter of the adjustable elbow is equal to The diameter of the water opening.

Preferably, the two ends of the adjustable elbow are respectively provided with fixing rings, and the bottom plate of the upper column is connected with the fixing ring at the upper end of the adjustable elbow by bolts; Bolted.

The utility model comprises an upper cylinder, an adjustable elbow, a lower cone, a sliding resistor, a floating ball and a signal device.

The upper cylinder and the lower cone are connected by adjustable elbows and bolts. Both the bottom of the upper cylinder and the top of the lower cone have water openings. The sliding resistance is fixed on the side wall of the upper cylinder through a bolt device. The sliding resistance of the sliding resistance The piece is connected to the floating ball, the floating ball moves up and down with the water level to change the size of the resistance, the sliding resistance is connected to the signal device through the wire, the signal device is composed of a DC power supply and a sensitive ammeter, and the piping and leakage strength can be judged by the reading of the sensitive ammeter . The diameter of the above cylinder is equal to 4 times the diameter of the water opening, the length of the above cylinder is equal to 8 times the diameter of the water opening, the diameter of the small hole of the lower cone is equal to the diameter of the water opening, and the diameter of the lower cone is equal to the diameter of the water opening. The diameter of the large hole is equal to 20 times the diameter of the water opening, the length of the lower cone is equal to 15 times the diameter of the water opening, the diameter of the floating ball is equal to 3 times the diameter of the water opening, and the floating ball can change with the change of water level. Floating up and down freely, the adjustable elbow can be bent into a certain angle as required.

The purpose of this utility model can be reached by following operation mode:

Put the detection device vertically into the water, and move along the edge of the embankment for detection. In the case of no drainage of the reservoir, the water in the dam can be considered to be still, and its flow velocity is zero. Therefore, when the detection device moves along the dam, if there is no piping or leakage, the water flow velocity at the bottom of the lower cone is zero, the water level in the upper column is basically stable at a fixed value, and the floating ball basically does not move up and down. The value of the ammeter in the signal device is basically stable; when the detection device encounters piping and leakage, the water flow velocity at the bottom of the cone below is greater than zero, according to the Bernoulli equation:

At the same elevation, it is a fixed value and is a constant. When the water velocity increases, the water pressure decreases to meet the requirements. The decrease of water pressure means that the water depth in the upper and lower cones decreases, that is, the water surface height in the upper column decreases, so that the floating ball Moving down, the floating ball moves down to drive the sliding piece of the sliding resistance to change the size of the resistance, and the reading of the sensitive ammeter in the signal device will change significantly, so as to detect the piping, leakage water inlet and strength.

Compared with the prior art, the utility model has the following beneficial effects: the utility model is based on the Bernoulli equation and buoyancy, utilizes a floating ball that can float with the water surface to change the resistance value of the control sliding resistance, and observes this change through a sensitive ammeter, In this way, the piping and leakage strength of the embankment can be detected. The utility model has low investment, simple structure, and is easy for engineering personnel to master and use. It can quickly and non-destructively detect the water inlet and strength of piping and leakage in the embankment, so that the staff can organize and arrange emergency rescue work reasonably.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the utility model embankment piping seepage intensity detection device;

Fig. 2 is the sectional view of the utility model embankment piping seepage intensity detection device;

In the figure, 1: upper cylinder; 2: lower cone; 3: handle; 4: bolt; 5: lug; 6: sliding resistor; 7: floating ball; 8: bolt; 9: bolt; 10: wire ;11: DC power supply; 12: Sensitive ammeter; 13: Signal device; 14: Bolt; 15: Bolt; 16: Bolt; 17: Adjustable elbow; 18: Bolt; 19: Bolt.

detailed description

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

The embankment piping leakage strength detection device includes an upper cylinder 1, a lower cone 2, a sliding resistor 6, a floating ball 7, a DC power supply 11, a sensitive ammeter 12, and an adjustable elbow 17.

The upper column 1 and the lower cone 2 are connected together by bolts 4, 15, 18, 19 and adjustable elbow 17, and the sliding resistance 6 is fixed on the side wall of the upper column 1 by bolts 8 and 9 , the floating ball 7 is connected to the slider of the sliding resistor 6, the sliding resistor 6 is connected to the signal device 13 through the wire 10, the signal device 13 is composed of a DC power supply 11 and a sensitive ammeter 12, and the lug 5 is fixed on the top by bolts 14 and 16 On the top of the cylinder 1, the handle 3 is connected to the lug 5. The diameter of the above cylinder 1 is equal to 4 times of the water opening diameter, the length of the above cylinder 1 is equal to 8 times of the water opening diameter, the aperture diameter of the lower cone 2 is equal to the water opening diameter, and the lower The large hole diameter of cone 2 is equal to 20 times of the water opening diameter, the length of the lower cone 2 is equal to 15 times of the water opening diameter, and the diameter of the floating ball 7 is equal to 3 times of the water opening diameter, and the floating ball 7. It can float up and down freely with the change of water level.

The mode of operation of the present utility model is as follows:

First, adjust the adjustable elbow according to the slope requirements of the embankment so that the lower cone mouth is facing the slope of the embankment, then place the detection device vertically in the water, carry the handle 3 to walk along the edge of the embankment, or fix the upper column vertically on the ship parallel Moving in the direction of the dam axis, when there is no piping or leakage, the water flow velocity at the bottom of the lower cone 2 is zero, the water level of the upper column 1 is a stable value, the floating ball 7 will not fluctuate greatly, and the sliding resistance 6 The resistance value is constant, and the reading of the ammeter 12 in the signal device 13 has basically no fluctuation. When the detection device encounters piping or leakage, the water flow velocity at the bottom of the lower cone 2 is greater than zero, and the water level in the upper cylinder 1 will decrease, and the floating ball 7 will move downward with the lowering of the water level in the upper cylinder 1. The sliding resistance When the resistance value of 6 changes, the reading of the ammeter 12 in the signal device 13 will obviously fluctuate, thereby detecting the piping and leakage intensity of the embankment.

The utility model is based on Bernoulli's equation and buoyancy, uses a floating ball that can float with the water surface to change the resistance value of the control sliding resistance, and observes the change through a sensitive ammeter, so that the piping and leakage strength of the embankment can be detected. The utility model has the advantages of low investment, simple structure, and is convenient for engineering personnel to master and use, and can quickly and non-destructively detect the water inlet and strength of piping and leakage in the embankment.

Claims (6)

1. The detection device for piping leakage strength of embankments, characterized in that the detection device includes an upper cylinder (1), a lower cone (2), a sliding resistor (6), a floating ball (7), and a signal device (13) , adjustable elbow (17); Both the bottom of the upper cylinder (1) and the top of the lower cone (2) have water openings, the upper cylinder (1) and the lower cone (2) are connected by an adjustable elbow (17), and the sliding resistance (6 ) is set on the side wall of the upper cylinder (1); The slider of the sliding resistance (6) is connected with the floating ball (7), and the floating ball (7) can change the size of the sliding resistance (6) with the up and down movement of the water level, and the sliding resistance (6) communicates with the signal device ( 13) are connected to each other, and the signal device includes a DC power supply (11) and a sensitive ammeter (12), and the sensitive ammeter (12) is used to distinguish the intensity of piping and leakage. 2. The device for detecting leakage strength of embankment piping according to claim 1, characterized in that, the upper cylinder (1) is connected to the adjustable elbow (17) by bolts; the lower cone (2) is connected to the adjustable elbow Pipe (17) is bolted, and the bend of adjustable elbow (17) is adjustable. 3. The device for detecting leakage strength of embankment piping according to claim 1, characterized in that there are lugs (5) on the upper part of the upper cylinder (1), the lugs (5) have holes, and the lugs (5) Fix it on the outer wall of the upper cylinder (1) with bolts. 4. The embankment piping leakage strength detection device according to claim 1, characterized in that, the side wall of the upper cylinder (1) is connected with a sliding resistor (6) by bolts. 5. The embankment piping leakage intensity detection device according to claim 1, characterized in that the diameter of the upper cylinder (1) is equal to 4 times the diameter of the water opening, and the length of the upper cylinder (1) is equal to 8 times The diameter of the water opening, the diameter of the upper bottom of the lower cone (2) is equal to the diameter of the water opening, the diameter of the lower bottom of the lower cone (2) is equal to 20 times the diameter of the water opening, and the length of the lower cone (2) is equal to 15 times Flowing water opening diameter, the diameter of floating ball (7) is equal to 3 times of flowing water opening diameter, and floating ball freely floats up and down with the variation of water level, and adjustable elbow (17) diameter is equal to described flowing water opening diameter. 6. The device for detecting leakage strength of embankment piping according to claim 2, characterized in that, the two ends of the adjustable elbow (17) are respectively provided with fixing rings, and the bottom plate of the upper cylinder (1) is connected with the adjustable The fixing ring at the upper end of the elbow (17) is connected with bolts; the fixing ring at the upper end of the lower cone (2) is connected with the fixing ring at the lower end of the adjustable elbow (17) with bolts.