CROSS-REFERENCE

This application claims the benefit of Chinese Patent Application No. 201910453770.4 entitled “LIQUID TAKING DEVICE AND LIQUID TAKING METHOD” and filed on May 28, 2019, which is incorporated herein by reference in its entirety.

TECHNICAL FIELD

The disclosure relates to the technical field of liquid taking, and in particular to a liquid taking device and a liquid taking method.

BACKGROUND OF THE INVENTION

At present, during the utilization of underground salt mine space, it involves analysis of liquid composition at a certain depth in the underground salt cavern, and taking out the liquid at a certain depth is the first problem to be faced.

However, there is only a pipe string connecting underground salt cavern and ground surface, and a diameter of the pipe string is too small to allow a large equipment being passed through; at the same time, as the brine under the ground is corrosive, the existing electronic liquid taking device is not suitable for use.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present disclosure is to overcome the deficiencies of the prior art, and provide a liquid taking device and a liquid taking method which can take brine from deep underground salt cavern.

In order to achieve the aforementioned object, the present disclosure adopts the following technical solutions.

In an aspect, provided herein is a liquid taking device, comprising a liquid taking bottle, a heavy ball, and two control ropes. The liquid taking bottle has a first mouth and a bottom opposite to the first mouth. The heavy ball is arranged inside the liquid taking bottle, and a diameter of the heavy ball is larger than a diameter of the bottle mouth. One control rope is connected to the first mouth of the bottle, and another control rope is connected to the bottom of the bottle.

In some embodiments, the liquid taking device may further comprise two gravity blocks. One gravity block is connected between the one control rope and the first mouth of the bottle, and another gravity block is connected between another control rope and the bottom of the bottle.

In some embodiments, the liquid taking bottle may comprise a first bottle body and a second bottle body arranged opposite to the first bottle body. The first bottle body and the second bottle body have opposite ends detachably connected to each other, and the opposite ends of the first bottle body and the second bottle body have a diameter larger than the diameter of the heavy ball. The first bottle body and the second bottle body have ends facing away each other, which are respectively provided with the first mouth of the bottle and the bottom of the bottle.

In some embodiments, the bottom of the bottle may comprise a second mouth and a sealing sleeve, and the sealing sleeve is arranged on the second mouth of the bottle.

In some embodiments, the bottom of the bottle may comprise a ball-filling hole and a ball-filling hole cap, a diameter of the ball-filling hole is greater than the diameter of the heavy ball, and the ball-filling hole cap is arranged on the ball-filling hole.

In some embodiments, the heavy ball has a surface covered with an elastic layer.

In another aspect, provided herein is a liquid taking method, applied to a liquid taking device, the liquid taking device takes brine from within an underground salt cavern, the liquid taking device including a liquid taking bottle, a heavy ball and two control ropes, the liquid taking bottle has a first mouth and a bottom opposite to the first mouth; the heavy ball is disposed inside the liquid taking bottle and has a diameter larger than a diameter of the first mouth; one control rope is connected to the first mouth of the bottle, and another control rope is connected to the bottom of the bottle, wherein the liquid taking method comprising:

filling a displacement liquid into the liquid taking bottle;

controlling the first mouth of the liquid taking bottle to face downward via the control ropes, and placing the liquid taking device into a liquid to be taken;

controlling the first mouth of the liquid taking bottle to face upward via the control ropes, such that the liquid taking bottle is filled with the liquid to be taken; and

controlling the first mouth of the liquid taking bottle to face downward again via the control ropes, and taking out the liquid taking device from the liquid to be taken.

In some embodiments, the displacement liquid is a liquid having a density smaller than that of brine and does not react with the brine.

In some embodiments, placing the liquid taking device into the liquid to be taken comprises:

controlling the control rope connected to the bottom of the bottle to suspend the liquid taking device;

controlling the control rope connected to the first mouth of the bottle to be loosened freely; and

controlling the control rope connected to the bottom of the bottle to be descended, and lowering the liquid taking device to a designated depth.

In some embodiments, controlling the first mouth of the liquid taking bottle to face upward comprises:

controlling the control rope connected to the first mouth of the bottle to be ascended; and

controlling the control rope connected to the bottom of the bottle to be descended.

Provided herein are the liquid taking device and the liquid taking method. Since the first mouth and the bottom of the liquid taking device are both connected with control ropes, the liquid taking device can be controlled to reach different depths under the ground by the action of two control ropes. Additionally, when the first mouth of the bottle is placed facing downward, the heavy ball blocks the first mouth of the bottle by its own gravity to prevent liquid leakage. When the first mouth of the bottle is turned upwards under the action of the control rope, the heavy ball fall onto the bottom of the bottle, so that the displacement liquid, which density is smaller than the external liquid, will escape from the mouth of the bottle and the external liquid can flow into the liquid taking device, thereby achieving the purpose of liquid taking. Through the synergistic actions between the control ropes and the heavy ball, the brine deep under the ground can be taken out simply and effectively, which has a good practical utility.

