KR890004911B1 - Method for heating the ground-water - Google Patents

Abstract

The water (W) filled in the water pipe (2) which is set in the excavated hot spring (1) flows out thru. a filtration net (2'). The water level of hot spring gradually rises according to the outflowed water and the outflowing speed of water gradually slows down as the water level of hot spring rises. When the water is up to a cover (6) , which is provided for cutting water off from the atmosphere, the balance between the pressure of the outlet valve (7) and that of water tank (5) is kept up so that the water in hot spring can flow out and be pumped without operation of a water pump. The water mixed with the thermal water is heated and the rich mineral resources are dissolved in the water.

Description

Hot water heating method

1 is an exemplary embodiment illustrating the method of the present invention.

2 is an illustration of a conventional method of pumping hot spring water

* Explanation of symbols for main parts of the drawings

1: Nagong 2: Water pipe

3,7 Outflow valve 4 Pump

5: Tank 6: Carver.

The present invention deeply installs the water pipe in the hole of the hot spring excavated underground and injects water from the upper end of the water pipe into the hot air of the hot spring, and the hot water in the hot air together with the hot water in the air rises the pores around the water pipe by the atmospheric pressure The present invention relates to a hydrothermal heating method of hot spring water, characterized by allowing it to flow out of nature.

The present invention is to obtain geothermal energy more economically by heating the ground water with geothermal heat while simultaneously pumping the water of deep hot springs excavated in the underground 500-700m underground without using a pump inside the hole The purpose is.

In general, hot springs are pumped inside Nagong, which is deeply excavated with 100m underground water, and pumped underground hot spring water by operating a pump installed in Nagong as shown in FIG. 2. However, even if the power of the pump is strong, It is difficult to pump water at a height of more than 200m, and the depth of Nagong, where actual hot spring water can rise, varies depending on the terrain conditions, but it is often more than several times deeper than the pumping capacity of the pump.In most cases, the hot spring water from the lower part of Nagong Filled above the perforations, the pump is in the hands of the perforations, so deep hot spring water is effectively pumped up to the depth of the pump's pumping capacity, and the perforations function as a kind of conduit.

At this time, pumping the water load up to several hundred meters from Nagong costs a lot of power, and there is a problem that the economic burden is high due to frequent repair of the pumping mechanism.

Even if 100m underground water is excavated, there is no hot spring anywhere, and even hot springs excavated with enormous costs cannot be used as hot spring water if the water quality does not meet the legal standards. There is a problem that cannot be used as a hot spring because the resin calculation is not established.

In recent years, the concept of hot springs has changed as the interest in using geothermal heat as an energy source has increased, unlike the conventional one, which focuses on the quality and quantity of hot springs.

In other words, even if the water quality is not suitable for hot spring water, if only a lot of hot water can come out as a heat source, and if the amount of water is insufficient even if the water temperature is high, water may be injected from the ground, heated by geothermal heat, and used.

According to the present invention, a new underground heat recovery method has been developed as a result of continuing research on the most economical method of recovering geothermal heat underground with these hot springs.

The present invention will be described in detail with reference to the accompanying drawings.

1 is an exemplary view illustrating an embodiment of the present invention, and FIG. 2 is an exemplary view showing a method of pumping general hot spring water.

When the water quality and amount of water of the hot springs discovered as a result of drilling by physical exploration, etc. are joined to the legal standard, the hot water itself maintains considerable economic value, so the pumping of Nagong (1) is carried out according to the conventional method shown in FIG. Install a water pipe 2 to the depth as far as possible to install an outlet valve 3 at the outer end and a pump 4 at the lower end of the water pipe 2 so that the pores 1 can be pumped through the water pipe 2 by the pump. It is pumped to the outside and used as hot spring water.

However, when the hot springs that have been drilled and excavated do not meet the legal standards or the water temperature is high, but the water volume is small and it is difficult to operate the hot spring normally, the water pipes (2) are deeply installed inside the Nagong (1) to the bottom of the Nagong water pipe. At the lower end of (2), a normal filter net 2 'is installed, and at the upper end of the water pipe 2, a water tank 5 capable of effectively injecting water is installed at an appropriate height on the ground.

In addition, an atmospheric pressure shut-off coverr 6 is formed deep in the upper end of the cavity 1, and a water outlet valve 7 is installed on the back side of the cover 6. In the water tank 5, water supply mechanisms 8, such as a pump which can continuously supply water, are used additionally. The inner wall of Nagong (1) has been cement grouting construction to prevent the collapse of the strata and to prevent the loss of water from the first drilling, so Napo (1) is one vertical pipe and the hot spring water of Napo (1) It is supposed to come mainly from the bottom.

In order to pump the hot water of the air cavity, the water W of the water tank 5 is injected to the lower end of the air cavity 1 through the water pipe 2 without using a pump in the air chamber. It can use power, but the vertical hole is the same as the direction of the fall of gravity, so even without power, it descends into the water pipe 2 very strongly by the weight of water so that the bottom filter network 2 'of the water pipe 2 is closed. It flows out through the pores 1 through. The water level WL of the initial pore 1 is located at a considerable depth in the basement as shown in FIG. 2, but as the amount of water injected gradually increases, the water level in the pore gradually increases, and as the level rises, the drop decreases gradually. The injection speed of water in the water pipe 2 becomes slow. However, since the water outlet valve 7 and the water injection tank 5 for water maintain the top and bottom drops of water, if the water of the pores 1 diverges above the cover 6, it flows out to the outlet valve 7 and thereafter the water tank ( By 5) the water supplied to the pores (1) is to pump the hot water in the pores of the groundwater (100m) depth without installing a pump in the pores.

In addition, the hot spring water may be ejected to the ground due to water pressure in some areas of Nagong. However, in Korea, it is rarely ejected to the ground. have. However, at the lower end of Nagong, it is associated with an infinite water source underground, so even if the water level of Nagong (1) is pumped down and the water level is low, the water level in Nagong becomes almost constant.

Therefore, in the present invention, when the water corresponding to the space volume of the remaining pores from the level of the hot spring water in the nagong (1) to the ground is injected, the level of the hot spring water in the nagong (1) reaches the carver (6) which is blocked from the atmosphere. Even if the water in the water tank 5 is not intentionally forcedly injected, the hot spring water in the basement continues to flow out to the outlet valve 7 because the level of the pores is artificially raised to the ground.

This has the advantage of reducing power costs and additional facilities for pumping water, such as hot spring water jetting in Nagong.

In addition, even if water is injected into the pores 1 through the water pipe 2 in the present invention, the injected water may be mixed with other underground hot water at the lower end of the pores, or may flow into the groundwater vein together with the other underground hot water. The water vapor rising to the pores 1 and flowing out to the outside is only a part of the injected water mixed, and the mixed water does not coincide with the quality of the first injected water because many depleted minerals are dissolved and heated. This means that the geothermal heat of the ground can improve the quality of the hot spring water and the water at the same time.

In addition, in the present invention, since it is economically inexpensively pumped, if the temperature of the underground hot spring water is maintained at least a degree of freezing, water can be injected into the pores through the water pipe from the ground and the geothermally joined hot water can be discharged to the ground. Geothermal energy can be recovered regardless of The recovered geothermal heat can be used for heating, agriculture or fisheries. Since it uses infinite geothermal energy, there is an economic control advantage that can acquire geothermal energy permanently once it is installed at a cost. In particular, it is expected to expand the use of geothermal energy in the era of energy depletion.

In particular, in the present invention, after the water is injected from the ground through the water pipe installed in Nagong, the injected water or the hot spring water from the underground rises to Nagong instead of the water pipe, and flows out to the ground. Due to the upward movement, sand or soil falling into the pores come out with the water depending on the various strata conditions of the inner circumferential wall of the pores, which effectively prevents the deposition of deposits in the deep lower end of the pores, thereby pumping water into the conventional water pipe. Compared to that, there is an advantage that the service life of the pores is much extended.

Claims (1)

Hot spring water, characterized by supplying water from the ground through a water pipe inside the bottom of the hot spring Nagung excavated in a normal basement to raise the water level in Nagong to the ground, allowing geothermally heated water to naturally flow out to the top of Nagong. Method of heating of water.

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