JPH0336396A - Great depth hot spring water pumping plant preventing lowering of temperature of same water - Google Patents
Great depth hot spring water pumping plant preventing lowering of temperature of same waterInfo
- Publication number
- JPH0336396A JPH0336396A JP17125889A JP17125889A JPH0336396A JP H0336396 A JPH0336396 A JP H0336396A JP 17125889 A JP17125889 A JP 17125889A JP 17125889 A JP17125889 A JP 17125889A JP H0336396 A JPH0336396 A JP H0336396A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- water
- temperature
- casing pipe
- hot water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 64
- 238000005086 pumping Methods 0.000 title claims abstract description 5
- 238000003303 reheating Methods 0.000 abstract description 5
- 239000011810 insulating material Substances 0.000 abstract description 4
- 239000011435 rock Substances 0.000 abstract description 4
- 230000005855 radiation Effects 0.000 abstract description 2
- 239000007787 solid Substances 0.000 abstract 2
- 230000000630 rising effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野]
本発明は、温泉井戸の揚湯施設に関するものであって、
大深度の温泉井戸の揚湯温度を高めるために利用して有
効なものである。[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to hot water pumping facilities for hot spring wells,
It is effective when used to raise the temperature of hot water in deep hot spring wells.
[従来技術及び本発明の課M]
従来の大深度の温泉井・戸の内部構造は概略第1図に示
すとおりである。この従来の温泉井戸は地下1000m
の岩11Bの下の高温水層から高温水を水中ポンプによ
って揚湯管3を介して地上に引き揚げるものである。こ
の井戸においては、高温水層Cから地上に達する直径1
50mmの大径ケーシングパイプlの中に直径50mm
の揚湯管3’jtm入し、その下端に水中ポンプ2を取
付けている。この揚湯管3の全長は最大スリットが設け
られているストレナー位置より若干上である。[Prior Art and Section M of the Present Invention] The internal structure of a conventional deep hot spring well/door is schematically shown in FIG. This conventional hot spring well is 1000m underground
The high-temperature water is brought up to the ground from the high-temperature water layer under the rock 11B by a submersible pump via the hot water pipe 3. In this well, the diameter from the high temperature water layer C to the ground is 1
50mm diameter inside 50mm large diameter casing pipe l
A hot water pump 3'jtm is inserted into the tank, and a submersible pump 2 is attached to its lower end. The total length of this hot water pipe 3 is slightly above the strainer position where the maximum slit is provided.
高温水層Cの温水は、その地下圧力によってケーシング
パイプ1内を水中ポンプ2の上方まで上昇する。したが
って水中ポンプを最大で上記入1−レナー位置より若干
上の深さまで降ろしておくことによって1000m以上
の深さの高温水層Cの高温水を地上に引揚げることかで
きるのである。The hot water in the high-temperature water layer C rises within the casing pipe 1 to above the submersible pump 2 due to its underground pressure. Therefore, by lowering the submersible pump to a maximum depth slightly above the above-mentioned 1-Lehner position, it is possible to withdraw high-temperature water from the high-temperature water layer C at a depth of 1000 m or more to the ground.
大深度の温泉の場合は、一般的には高温水層の温度がそ
れほど高くないこと、長い管路を通って地上に引揚げら
れることのために、揚水温が30度前後のものが多く、
そのままではほとんど利用できないので、これをボイラ
ーで加熱して浴場、暖房用温水等に利用している。In the case of deep hot springs, the temperature of the high-temperature water layer is generally not very high, and the pumped water temperature is often around 30 degrees because it is brought up to the ground through a long pipe.
Since it can hardly be used as it is, it is heated in a boiler and used for baths, hot water for heating, etc.
揚水湯温か40度に達しない場合は、再加熱のための施
設HI!、施設維持、運転管理費が大きいので、揚水湯
温を数度上昇させることができればこれらの費用は大巾
に減少するので、この揚水湯温を少しでも高めることが
強く望まれるところである。If the pumped water temperature does not reach 40 degrees, please use the facility for reheating! However, since facility maintenance and operation management costs are large, if the pumped water temperature could be raised by several degrees, these costs would be greatly reduced, so it is strongly desired to raise the pumped water temperature even a little.
高温水層内の温水が40度に達していても、揚水管から
引き揚げられる温水は30度前後に低下する。これは岩
盤の上の層、すなわち深さ数百メートルの冷水層Aによ
って冷却されているケーシングパイプl内を上昇する間
に温水が冷却されるためである。揚水管3が直径50m
mであるのに対してケーシングパイプは直径150mm
と大径である。したがってケーシングパイプl外の冷水
層Aの冷水とケーシングパイプ内の温水の熱交換面積が
大きく、かつ温水がケーシングパイプ内を上昇する速度
が低いこと、その上昇距離が数百メートルと極めて長い
ことが、ケーシングパイプ内を上昇する温水の温度低下
を促進している主な原因である。Even if the temperature of the hot water in the high-temperature water layer reaches 40 degrees, the temperature of the hot water pulled up from the pumping pipe drops to around 30 degrees. This is because the hot water is cooled while rising inside the casing pipe l, which is cooled by the layer above the bedrock, that is, the cold water layer A several hundred meters deep. Lifting pipe 3 has a diameter of 50m
m, whereas the casing pipe has a diameter of 150 mm.
It has a large diameter. Therefore, the heat exchange area between the cold water in the cold water layer A outside the casing pipe and the hot water inside the casing pipe is large, the speed at which the hot water rises inside the casing pipe is low, and the distance it rises is extremely long, several hundred meters. , is the main cause that promotes the temperature drop of hot water rising inside the casing pipe.
本発明は、温泉水のケーシングパイプ上昇中における冷
水層Aへの放熱を可及的に小さくして。The present invention minimizes heat radiation to the cold water layer A during rising of the hot spring water casing pipe.
温泉水の熱損失を小さくすること(揚水温を高めること
)をその課題とするものである。The objective is to reduce the heat loss of hot spring water (increase the pumped water temperature).
[課題解決のために講じた手段]
上記課題解決のために講じた手段は、ケーシングパイプ
を中空二重断熱パイプとし、該断熱パイプの断熱層を岩
盤層に達する長さとすることである。[Means taken to solve the problem] The measures taken to solve the above problem are to make the casing pipe a hollow double insulated pipe, and to make the heat insulating layer of the insulated pipe long enough to reach the bedrock layer.
なお、中空二重ケーシングパイプの内管と外管との間の
空隙に地下水が侵入しないように、かつ両管の伝熱性を
小さくするために断熱材を詰めて、中空二重管を断熱管
とする。In addition, in order to prevent groundwater from entering the gap between the inner pipe and outer pipe of the hollow double casing pipe, and to reduce the heat conductivity of both pipes, insulation material is filled to prevent the hollow double casing pipe from becoming an insulated pipe. shall be.
中空二重断熱ケーシングパイプの内管は従来(第1図)
の井戸のケーシングパイプと同様のものであり、水中ポ
ンプが降ろされている深さも従来の井戸と同じであるか
ら、ケーシングパイプを高温水が上昇する速度、距離は
従来のままであるが、ケーシングパイプ内管と冷水層A
との間に断熱層が介在するためケーシングパイプの冷水
層への伝熱性が著しく低下し、従来のケーシングパイプ
の伝熱性を1/10に低下させることができる。The inner pipe of hollow double insulated casing pipe is conventional (Fig. 1)
The casing pipe is similar to the casing pipe of a well, and the depth to which the submersible pump is lowered is the same as that of a conventional well, so the speed and distance at which high-temperature water rises through the casing pipe remain the same, but the casing pipe Pipe inner tube and cold water layer A
Since the heat insulating layer is interposed between the casing pipe and the cold water layer, the heat conductivity of the casing pipe to the cold water layer is significantly reduced, and the heat conductivity of the conventional casing pipe can be reduced to 1/10.
したがって、高温水層の温水が地上に達するまでの間に
生じる温度低下を1/lOに低減させることができる。Therefore, the temperature drop that occurs before the hot water in the high-temperature water layer reaches the ground can be reduced to 1/1O.
例えば、40度の高温水層が地上に達するとき30度で
あるとすれば、本発明の適用によって39度になる。For example, if a high-temperature water layer of 40 degrees is 30 degrees when it reaches the ground, it becomes 39 degrees by applying the present invention.
[実 施 例] 第2図を参照しつつ実施例を説明する。[Example] An embodiment will be described with reference to FIG.
直径200 m mの外管4を岩盤Cを貫通する深さま
で埋設し、この外管4の中に内管l′を挿入する。内管
1′は従来技術におけるケーシングパイプと同様のもの
で、その下端が高温水層Cに達している。An outer tube 4 having a diameter of 200 mm is buried to a depth that penetrates the rock C, and an inner tube l' is inserted into the outer tube 4. The inner pipe 1' is similar to the casing pipe in the prior art, and its lower end reaches the high temperature water layer C.
内管l′と外管4との間に厚さ25mmの環状空隙が形
成されており、この空隙に発泡樹脂等の非吸水性断熱材
5を詰めている。An annular gap having a thickness of 25 mm is formed between the inner tube l' and the outer tube 4, and this gap is filled with a non-water-absorbing heat insulating material 5 such as foamed resin.
水中ポンプ2によって揚湯管3を介して内管l′内の高
温水が地上に引揚げられる。高温水層内の高温水が内管
l′内を数百メートル上昇するが、断熱材5による断熱
層によって内管1′と冷水層Aとの間が断熱されている
ので、内管l′を数百メートル上昇する間の放熱が少く
、シたがってこの間の温度低下が少ない、なお、符号6
はスリットである。The high-temperature water in the inner pipe l' is lifted to the ground via the hot water pump 3 by the submersible pump 2. The high-temperature water in the high-temperature water layer rises several hundred meters inside the inner pipe l', but since the inner pipe 1' and the cold water layer A are insulated by the heat insulating layer formed by the heat insulating material 5, the inner pipe l' There is little heat dissipation while ascending several hundred meters, and therefore the temperature drop during this period is small.
is a slit.
[効 果]
前記の本発明の課題は未だ解決されていない新規な課題
である。したがって、この課題を解決して前述の従来技
術の問題を解消したこと自体が本発明特有の効果である
。[Effects] The above-mentioned problem of the present invention is a novel problem that has not yet been solved. Therefore, the fact that this problem is solved and the problems of the prior art described above are eliminated is itself an effect unique to the present invention.
大深度温泉について、揚水温度を10度近く高めること
ができるので、これによって次の如き利点を生じる。For deep hot springs, the pumped water temperature can be raised by nearly 10 degrees, which brings about the following advantages.
まず、再加熱温度を大巾に小さくできるので。First, the reheating temperature can be significantly reduced.
大力の場合加熱施設を大巾に小型化することができる。In the case of large power, the heating facility can be significantly downsized.
したがって、その設置、運転管理費を大riに軽減でき
る。高温温水層の水温によっては、従来再加熱を要して
いたものが、再加熱を不要にすることができる場合もあ
る。Therefore, installation, operation and management costs can be greatly reduced. Depending on the water temperature of the high-temperature hot water layer, it may be possible to eliminate the need for reheating for products that conventionally required reheating.
第1図は従来技術の大深度温泉井戸の断面図、第2図は
本発明の実施例の断面図である。
図中、1・・・ケーシングパイプ、1′ ・・・内管、
2・・・水中ポンプ、3・・・揚湯管、4・・・外管、
5・・・断熱材、A・・・冷水層、B・・・岩盤、C・
・・高温水層 である。FIG. 1 is a sectional view of a conventional deep hot spring well, and FIG. 2 is a sectional view of an embodiment of the present invention. In the figure, 1...casing pipe, 1'...inner pipe,
2... Submersible pump, 3... Hot water pipe, 4... Outer pipe,
5...Insulation material, A...Cold water layer, B...Bedrock, C.
...is a high-temperature water layer.
Claims (1)
に水中ポンプを取付けている大深度温泉井戸について、
ケーシングパイプを中空二重断熱パイプとし、該断熱パ
イプの断熱層を岩盤層に達する長さとしている揚水温度
低下防止揚湯施設。Regarding deep hot spring wells, a hot water pump is inserted into the casing pipe and a submersible pump is attached to the lower end of the hot water pipe.
A hot water pumping facility for preventing a drop in the temperature of pumped water, in which the casing pipe is a hollow double insulated pipe, and the heat insulating layer of the insulated pipe has a length that reaches the bedrock layer.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17125889A JP2665977B2 (en) | 1989-07-04 | 1989-07-04 | Deep-depth hot spring water temperature drop prevention facility |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17125889A JP2665977B2 (en) | 1989-07-04 | 1989-07-04 | Deep-depth hot spring water temperature drop prevention facility |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0336396A true JPH0336396A (en) | 1991-02-18 |
JP2665977B2 JP2665977B2 (en) | 1997-10-22 |
Family
ID=15919987
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17125889A Expired - Fee Related JP2665977B2 (en) | 1989-07-04 | 1989-07-04 | Deep-depth hot spring water temperature drop prevention facility |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2665977B2 (en) |
-
1989
- 1989-07-04 JP JP17125889A patent/JP2665977B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP2665977B2 (en) | 1997-10-22 |
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