JP3154627U - Gas separator - Google Patents

Abstract

A gas separator for separating flammable gas in hot spring water by combining gas separators of different systems. A hot water storage chamber is provided in a hot spring tank 1 provided with an inlet 6 into which hot spring water flows from outside and having an upper chamber 3 having a first exhaust port 4 at the top and a second exhaust port 28 at the top. 2, and a plurality of baffle plates provided under the receiving plate and a receiving plate 9 that separates gas by colliding with hot spring water discharged from the nozzle in front of the nozzle 8 provided at the tip of the inlet 10 is provided in the upper chamber 3. A water level sensor 31 that senses the water level in the hot water storage chamber 2 and controls the submersible motor 21 is provided above the hot water storage chamber 2, and includes a plurality of separators 22 that separate gases from the liquid by the centrifugal force of the submersible motor 21. An outlet 24 is provided at the upper end of a hot water pipe 23 connected to the next gas separator 20. [Selection] Figure 1

Description

  The present invention relates to an improved gas separator that separates flammable gas contained in hot spring water by a plurality of separation devices having different gas separation methods.

  Recently, there are many day-trip bathing facilities in various places, and there are many hot spring facilities using hot springs, but the hot spring water may contain flammable gas. It is necessary to separate the gas from water. As a method of removing gas from hot spring water, the method of releasing gas to the atmosphere is simple, but in places where the building is dense, a pump room that pumps hot springs is installed inside the building, for example, in the basement In such a case, there is a problem that the gas is easily accumulated in the pump chamber.

  In order to keep the inside of the pump room that draws hot spring water from the ground so that flammable gases do not accumulate, it is common to provide a ventilation fan in the pump room to forcibly ventilate. If they are close to each other, noise problems may occur with the motor sound of the ventilation fan. As a countermeasure against the noise, a sound insulation cover or the like is attached to the outside of the exhaust port equipped with the ventilation fan. Because of this, there was a problem that indoor ventilation was insufficient and an explosion accident occurred.

  In this type of conventional technology, when the brine pumped up by a pump is supplied to a gas separator that separates into hot spring and natural gas, it separates into natural gas and hot spring water using the specific gravity difference from the brine. (Patent Document 1).

  In addition, a hot water outlet is provided in the upper part of a sealed hot water bath that stores hot spring water pumped from the ground, and the hot spring water collides with the jammer plate installed at the tip drop position of the hot water outlet, so that the natural hot spring water There is also what separates gas (patent document 2). This device is a simple method that separates natural gas from liquid by colliding hot spring water with a jammer plate, but it is dissolved in hot spring water because the concentration of gas contained depends on the hot water quality. It was difficult to separate natural gas efficiently.

  Furthermore, in the device for separating the gas-liquid mixed liquid, a baffle plate is provided in front of the stock solution supply port provided in the container of the device, and the gas-liquid mixed liquid supplied from the supply port is made to collide with the baffle plate, Some devices separate gas from liquid. (Patent Document 3).

  Furthermore, there is also one that uses centrifugal force to separate a gas from a gas-liquid mixed fluid (Patent Document 4).

JP 2008-285583 A Registered Utility Model No. 3150115 Japanese Utility Model Publication No. 04-37516 Japanese Utility Model Publication No. 06-8791

  As described above, flammable gas such as methane gas (hereinafter referred to as gas) in natural gas contained in hot spring water has a risk of explosion if it exceeds a certain concentration inside the building. The gas is released from the room to the atmosphere using a ventilator, or the hot spring water containing the gas is collided with the baffle plate to separate the gas from the liquid. Since the reference value of the gas concentration contained in the hot spring water has increased, it has been difficult to clear this reference value with the conventional gas separator.

  In order to solve this conventional problem, the present invention combines gas separators with different gas separation methods to enhance the separation effect of the gas contained in the hot spring water and clear the standard value required by the revised hot spring law. The purpose is to be able to.

  In order to solve the above-mentioned problems, the present invention is provided with an inflow port 6 through which hot spring water flows from the outside, the upper chamber 3 having the first exhaust port 4 at the top, and the hot spring having the second exhaust port 28 at the top. A hot water storage chamber 2 is formed in the tank 1, and a receiving plate 9 that separates gas by colliding hot water discharged from the nozzle in front of a nozzle 8 provided at the tip of the inflow port, and a lower side of the receiving plate. A primary gas separator 12 including a plurality of baffle plates 10 provided therein is provided in the upper chamber 3, and a water level sensor 31 that senses the water level in the hot water storage chamber 2 and controls the submersible motor 21 is provided above the hot water storage chamber 2. And an outlet 24 is provided at the upper end of a hot water pipe 23 connected to a secondary gas separator 20 having a plurality of separators 22 for separating gas from the liquid by centrifugal force of the submersible motor 21. .

  The present invention has the above-described configuration, and the primary gas separator 12 that separates the gas contained in the liquid by a collision type method, and the gas remaining in the liquid after the gas is dispersed is further separated by using centrifugal force. The gas contained in the liquid is efficiently separated by combining a plurality of gas separators having different gas separation methods such as the secondary gas separator 20. Gas separated by the primary gas separator and accumulated in the upper chamber 3 is from the first exhaust port 4, and gas separated by the secondary gas separator and accumulated in the upper portion of the hot water storage chamber 2 is from the second exhaust port 28, respectively. It is discharged into the atmosphere.

  The primary gas separator 12 is provided with a gap 16 between the tip of the nozzle 8 provided at the tip of the inlet 6 provided in the horizontal direction on the upper side of the upper chamber and the backing plate 9. A plurality of small holes are provided on the entire surface of the upper chamber 3, and a plurality of baffle plates 10 having a downward slope are removably provided in the upper chamber 3.

  When hot spring water containing gas is introduced into the upper chamber 3 from the outside, the flow rate is narrowed by the nozzle 8 attached to the front end of the inflow port 6, and the momentum of the discharge speed is reduced. By providing the gap portion 16 with the receiving plate 9 positioned in front of the nozzle at a faster speed, the pressure drops during the passage through the gap portion 16 which is the pressure release portion of the compressed gas. The contained gas collides with the backing plate while expanding, so that the gas separation efficiency can be further improved. The nozzle 8 attached to the tip of the inlet 6 may be detachably mounted so that it can be replaced with another type of nozzle as required.

  The secondary gas separator 20 has a hot water pipe 23 connected to the outlet 24 connected to the upper part of a plurality of separators 22 connected to the upper part of the submersible motor 21, and from the hot spring water fed to each separator 22. It is characterized by being provided in the second chamber 2b of the hot water storage chamber so as to discharge the gas separated by centrifugal force into the hot water storage chamber 2.

  The gas remaining in the liquid pumped in the secondary gas separator 20 is exhausted to the outside of each separator 22 by centrifugal force, and the gas remaining in the hot spring water rising in each separator is reduced to comply with the revised law. Based on the reference value can be achieved. The gas discharged into the hot water storage chamber 2 rises in the liquid, passes through the exhaust pipe 27 communicating with the upper portion of the hot water storage chamber 2 and is discharged into the atmosphere from the second exhaust port 28.

  The water level sensor 31 includes first, second, third, fourth, and fifth electrode rods 31a, 31b, 31c, 31d, and 31e that are vertically suspended in the hot water storage chamber 2 and sense the water level of hot spring water. 1 to 4 electrode rods 31a, 31b, 31c, and 31d having different heights and the fifth electrode rod 31e having a grounding function located at the bottom are alternately connected, and the submersible motor 21 is controlled by inverter control. It is characterized by adjusting the rotation speed of the.

  The water level sensor 31 including the first to fifth electrode rods 31a to 31e having different lengths for detecting the water levels at different heights starts, stops, and rotates the submersible motor 21 by detecting the water levels having different heights. The speed is adjusted from high-speed rotation to low-speed rotation by inverter control, and there is an advantage that eco-driving can be performed to save electricity usage.

  A lower partition wall provided with a port 17a at the lower portion of the upper partition wall 17 suspended from the inner lower portion of the upper chamber 3, and standing up from the bottom surface of the hot water storage space with a space between the upper partition wall A weir portion 18a is formed at the upper end of 18 and the first chamber 2a and the second chamber 2b in the hot water storage chamber communicate with each other through a communication passage 19 provided between the upper partition wall 17 and the lower partition wall 18. It is characterized by that.

  The hot water storage chamber 2 is partitioned by the upper partition wall 17 and the lower partition wall 18 so that the hot spring water in the first chamber 2a that falls from the primary gas separator and undulates does not flow into the second chamber 2b as it is. It has the effect | action which makes it stop once at the dam part 18a provided in the upper part of the lower partition wall 18, and then passes through the dam part 18a, and makes the surface of hot spring water gentle. The chattering phenomenon does not occur when the electrode bar of the water level sensor 31 senses the water level due to the undulation of the water surface.

  The hot spring water tank 1 is provided with a level gauge 14 for checking the water level of hot spring water stored in a hot water storage chamber 2 provided inside, on one side of the middle part of the hot spring tank. An overflow pipe 29 is provided above the hot water storage chamber 2 provided inside.

  By providing the level gauge 14 in front of the middle part of the hot spring tank, it is easy to grasp the optimum water level of the hot spring water accumulated in the hot water storage chamber from the outside, and moreover, there is much hot spring water flowing in. In the case where it is too much, it is possible to prevent the apparatus from being broken by discharging it from the overflow pipe 29 to the outside of the hot water storage chamber.

  The present invention can efficiently separate the gas contained in the liquid by combining the collision method with different gas separation methods and the method using centrifugal force. The secondary gas separator also has a pump function because it rotates the impeller attached to the pump shaft connected to the submersible motor to pump the hot water. When supplying, the hot spring water can be supplied without the need to bother and connect the pump. In addition, when high-precision gas separation is required, the gas separation capacity can be improved by connecting the apparatus in series. Further, when separating a large amount of hot spring water gas, the apparatus It is also possible to treat hot spring water by combining in parallel.

It is the front view which fractured | ruptured partially the gas separator concerning this invention. It is a right view of the gas separator. It is a principal part expanded sectional view of the secondary gas separator installed in the hot spring tank.

  The embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a partially broken front view of a gas separator according to the present invention, FIG. 2 is a right side view of the gas separator, and FIG. It is principal part sectional drawing of a secondary gas separator. Reference numeral 1 denotes a hot spring tank which has a hot water storage chamber 2 for storing hot spring water pumped from the ground and is formed in a square shape. The lower part of the chamber 3 is opened and communicates with the hot water storage chamber 2. The hot water storage chamber 2 is composed of a first chamber 2a located below the upper chamber 3, and a second chamber 2b in which a secondary gas separator, which will be described later, is installed. I am doing.

  In the upper part of the upper chamber 3, there is provided a first exhaust port 4 through which combustible gas (hereinafter referred to as gas) in natural gas separated from hot spring water is discharged to the outside atmosphere. On the upper side, hot spring water pumped up from an underground source or pumped by a deep well pump flows into the upper chamber 3 from an inlet 6 having a large-diameter connecting flange at the end as indicated by an arrow. The inlet 6 has a first water inspection cock 7 so that the gas concentration contained in the hot spring water flowing through the inlet can be sampled for inspection.

  The inflow port 6 installed horizontally on the upper side 1 in the upper chamber 3 is provided with a nozzle 8 at its tip for increasing the discharge rate of hot spring water, and further, the liquid discharged from the nozzle is disposed in front of the nozzle. A receiving plate 9 that collides with an interval 16 serving as a space in which the pressure is released is provided at the other end of the upper chamber located on the side opposite to the inlet 6. When hot spring water collides with the receiving plate 9 vigorously, the gas contained in the hot spring water is separated from the liquid by the impact.

  A plurality of baffle plates 10 are alternately slanted in a vertical direction so as to be able to be taken out below the receiving plate 9 installed in the upper portion of the upper chamber 3 so as to shield the upper chamber. The baffle plate is flat and has a large number of small holes (not shown) on the whole, and the hot spring water after colliding with the receiving plate 9 falls on the baffle plate 10 located below to cause the collision. The gas is separated by impact, and the gas is separated when flowing down the surface of the baffle plate and passing through the small holes.

  The gas separated from the hot spring water by the collision type primary gas separator 12 including the receiving plate 9 and the baffle plate 10 rises in the upper chamber 3 and is discharged into the atmosphere from the first exhaust port 4. Hot spring water flowing down from the lower part of 10 is stored in the hot water storage chamber 2. An upper partition wall 17 is suspended below the central side wall portion of the upper chamber 3, and an opening 17 a is provided at the lower end of the upper partition wall. Further, the lower partition wall 18 is raised upward from the inner bottom of the hot water storage chamber so as to be substantially close to the upper partition wall, and the upper partition wall is provided with a “mogureki” at a height above the lower end of the upper partition wall. A communication passage 19 is provided between the wall 17 and the lower partition wall 18, and a dam portion 18 a is formed at the upper end of the lower partition wall 18.

  On one side of the front middle part of the hot spring tank 1, a vertically long level gauge 14 is provided so that the amount of hot spring water accumulated in the hot water storage chamber can be visually confirmed. A drain valve 15 for discharging drainage in the hot water storage chamber 2, particularly the second chamber 2b, is provided on one side.

  In the second chamber 2b of the hot water storage chamber in the hot spring tank 1, a secondary gas separator 20 is provided for separating the gas contained in the liquid using centrifugal force. The concentration of the gas contained in the hot spring water varies depending on the quality and type of hot spring water, etc., and it may not be possible to clear the standard value of the first chamber 2a only by separating the gas with the primary gas separator 12. A secondary gas separator 20 having a different gas separation method from the primary gas separator 12 provided in the upper chamber 3 provided above is installed in the second chamber 2b.

  A separator 22 for separating the gas in the liquid using centrifugal force is connected to the upper part of the submersible motor 21 located at the lower part of the secondary gas separator 20, and the upper end of the hot-water pipe 23 connected to the upper part of the separator is The hot spring water that protrudes from the upper part of the hot spring tank and is bent horizontally and has a connection flange at the tip is provided to discharge the hot spring water from which gas has been separated and removed in the direction of the arrow. The outlet 24 is provided with a second water inspection cock 25 for sampling in order to confirm the gas concentration remaining in the hot spring water passing through the outlet 24.

  In addition, as a device for separating the gas in the liquid by utilizing the centrifugal force, for example, Japanese Utility Model Laid-Open No. 06-8791 and registered utility model No. 3103952 are used.

An exhaust cylinder 27 having a second exhaust port 28 at the upper end is connected to the upper part of a T-shaped pipe 26a connected to the tip of a connection cylinder 26 attached horizontally to the upper side surface of the hot spring tank 1, and the exhaust cylinder An overflow pipe 29 is connected to the lower part, and the exhaust cylinder 27 and the overflow pipe 29 are linearly connected in the vertical direction. In addition, an air vent valve 30a is provided in the middle of the connecting pipe 30 connecting the middle part of the outlet 24 and the middle part of the exhaust pipe 27, and gas such as air contained in the liquid flowing through the outlet is removed. can do.

  31 is a water level sensor composed of five electrode rods suspended from the upper part of the hot water storage chamber 2, and the first, second, third, and third sensors having sensor functions at different positions from the inner bottom surface of the hot water storage chamber. The four electrode rods (31a, 31b, 31c, 31d) are provided with different lengths, and the fifth electrode rod 31e, which is the longest and located at a position where the lower portion is close to the bottom surface, has a grounding function. Further, the illustration of the power cable for supplying power to the submersible motor 21 of the secondary gas separator 20 from the outside is omitted. An electric power cable is connected to the submersible motor 21, and the submersible motor is provided in an inverter specification by the water level sensor 31 composed of the five electrode rods described above. That is, the speed is controlled by changing the synchronous speed of the motor by changing the AC frequency by an inverter that converts DC to AC.

  Next, the operation of the present embodiment will be described. Hot spring water pumped up from a hot spring well by a self-injection or deep well pump gains momentum from a nozzle 8 provided at an end of an inlet 6 attached to the upper chamber 3. Further, the gas contained in the liquid is separated by colliding with the receiving plate 9. The hot spring water after separating the gas falls on the baffle plate 10 located below the receiving plate 9, flows down along the inclination of the baffle plate, and has a large number of small holes provided in the entire baffle plate. Gas is separated when passing through (not shown). The hot spring water after separating and removing the gas is stored in the first chamber 2a of the hot water storage chamber 2 located below the baffle plate 10, that is, below the upper chamber.

  The gas separated from the hot spring water by the primary gas separator 12 that separates the gas when it collides with the receiving plate 9 or passes through a plurality of small holes provided in the baffle plate 10 rises in the upper chamber 3 and rises in the first chamber. It is discharged from the exhaust port 4 into the atmosphere. The hot spring water from which the gas has been separated is stored in one of the first chambers 2 a located below the upper chamber 3 and divided into two by the lower partition wall 18. Hot spring water accumulated in the first chamber 2a enters the communication passage 19 through the opening 17a, and the water levels in the first chamber 2a, the second chamber 2b, and the communication passage 19 rise, and the lower partition wall 18 It flows into the second chamber 2b beyond the weir 18a provided at the upper end.

  When the water level of the hot spring water accumulated in the second chamber 2b of the hot water storage chamber rises and reaches the lower end (HH) position of the first electrode rod 31a of the water level sensor 31 located at the top, the ground 31e and the electrode rod 31a And the underwater motor 21 starts rotating, and rotates at a high speed of, for example, 50 Hz by inverter control. Hot spring water in the second chamber 2b of the hot water storage chamber is passed through the strainer 37 into the secondary gas separator 20. Inhale. When the plurality of impellers 36 attached to the motor shaft 35 connected to the underwater motor rotate, the centrifugal force is used to separate the gas remaining in the hot spring water and discharge it to the outside of the separator 22. The hot spring water rising in each separator while separating the gas rises in the hot water pipe 23 connected to the upper part of the secondary gas separator 20 and is indicated by an arrow from the tip of the outlet 24 as indicated by an arrow. A hot water supply pipe (not shown) is supplied to a desired location in the outside hot spring facility.

  While the water level of the hot spring water is connected to the first electrode rod 31a and the second electrode rod 31b located below the first electrode rod 31a, that is, from (HH) to the (H) position below it, the hot water is rotated at a maximum. The hot spring water continues to flow out in the direction of the arrow from the outlet 24 at a flow rate. When the water level of the hot spring water in the hot water storage chamber 2 is lowered and separated from the lower end of the second electrode rod 31b and the water level is located between (H) and (L), it rotates at a medium speed, for example, at 40 Hz. Decrease the amount of hot water slightly. Further, during the period from the lower level of the water level (L) located below the third electrode rod 31c to (LL), the water level in the hot water storage chamber is reduced to a low speed rotation, for example, at 32 Hz, and from the outlet 6 Reduce spillage further.

  When the water level in the hot water storage chamber is further lowered and positioned below (LL) at the lower end of the fourth electrode rod 31d, the submersible motor 21 is stopped to prevent a malfunction due to idling. In other words, an “eco-driving” is performed by adjusting the inverter so that the submersible motor 21 rotates properly, thereby preventing wasteful use of electricity. The submersible motor 21 starts rotating when the water level in the hot water storage chamber rises to the position of (HH) at the lower end of the first electrode rod 31a, and then continues to rotate while being controlled by the inverter while the water level falls to (LL). .

  Furthermore, if the water level in the hot water storage chamber 2 further rises even if the submersible motor 21 rotates at a high speed and flows out from the outlet, an overflow pipe 29 connected to a connecting cylinder 26 provided at the upper part of the hot water storage chamber. The extra hot spring water is discharged from the hot spring tank to prevent the hot spring tank from being damaged.

  In FIG. 3, the operation of the secondary gas separator 20 will be described. The liquid in the separator 22 is blown off in the centrifugal direction by centrifugal force by the rotation of the impellers 36 and 36 attached to the motor shaft 35 of the submersible motor 21. The hot spring water in the hot water storage chamber 2 sucked into the separator from the strainer 37 positioned below due to the negative pressure generated around the motor shaft is, as a first stage, an internal chamber provided in the center of the first separator 22a. The liquid containing the gas in 38 passes through a plurality of small holes 36a provided in the substantially central portion of the impeller and is sent into the upper internal chamber 38a in the separator 22a. On the other hand, the liquid blown away in the centrifugal direction by the centrifugal force generated by the rotation of the impeller 36 located in the first separator 22a rises in the water conduit 40 between the outer wall of the first separator 22a and the guide wall 39. Then, it is fed into the inner chamber 41 in the upper second separator 22b.

  Since the liquid has a larger mass than the gas, it is blown away in the outer circumferential direction by the centrifugal force generated by the rotation. However, since the bubble has a smaller mass and the centrifugal force acts less, the gas gathers around the motor shaft 35 located at the center. The small bubbles including are fed upward through a plurality of small holes 36 a provided around the center of each impeller 36. When the motor shaft 35 continues to rotate, the liquid pressure continuously flowing from below increases the water pressure in the inner chamber 38 as compared to the surroundings. As a result, one or more communicating with each upper inner chamber 38a located above. Is discharged to the outside of the separator 22a.

  As a second stage, the hot spring water pumped up by the water conduit 40 is directed to the motor shaft 35, and the centrifugal force generated by the rotation of the impeller 36 located in the second separator 22b connected above the first separator 22a. The hot spring water blown off in the centrifugal direction passes through the water conduit 40 provided between the outer wall of the second separator 22b and the guide wall 39, and the center of the inner chamber 41 in the second separator as described above. Gathered around the motor shaft 35 located in the upper part, sucked from below by the negative pressure due to the rotation of the impeller 36, pumped upward, and passed through a small hole 36a provided around the center part of the impeller to move the upper internal chamber It is accommodated in 41a, and is discharged to the outside of the second separator from the exhaust port 42 communicated with the upper internal chamber 41a by the inflowing water pressure from below. As described above, the liquid almost containing no gas is sent upward through the water conduit 40 by the centrifugal force generated by the rotation of the impeller, and the desired location from the outlet 24 by the hot water pipe 23 connected to the upper part. Hot water is sent to.

  The number of separators 22 constituting the secondary gas separator 20 can be increased or decreased as necessary, and may be one, or two, three or more may be combined in series. Although the gas separation performance can be enhanced by increasing the number of the separators, the number of separators that can be connected is inevitably limited depending on the size of the hot spring tank 1. Moreover, since this secondary gas separator 20 has the action of a submersible pump, it is possible to supply hot spring water to a high place slightly higher than the place where the gas separator according to the present invention is installed, and it is necessary to bother to install a hot water pump. Has the advantage of not.

Here, actual measurement values are shown for gas separation examples that the applicant has experimented with. It is measured by the headspace method for both source and post-treatment.
(1) When the gas concentration contained in the source water is 100% LEL or more, the gas concentration contained in the hot spring water after separating the gas by this apparatus was 4% LEL.
(2) When the gas concentration contained in the source spring was 20% LEL, the gas concentration contained in the hot spring water after separating the gas by this apparatus was 1% LEL.

DESCRIPTION OF SYMBOLS 1 Hot spring tank 2 Hot water storage chamber 2a 1st chamber 2b 2nd chamber 3 Upper chamber 4 1st exhaust port 6 Inlet 8 Nozzle 9 Base plate 10 Baffle plate 12 Primary gas separator 14 Level gauge 16 Gap part 17 Upper partition wall 18 Lower partition Wall 18a Weir 19 Communication passage 20 Secondary gas separator 21 Submersible motor 22 Separator 23 Hot water pipe 24 Outflow port 28 Second exhaust port
29 Overflow pipe 31 Water level sensor 31a First electrode rod 31b Second electrode rod 31c Third electrode rod 31d Fourth electrode rod 31e Fifth electrode rod

Claims (7)

A hot spring tank provided with an inlet (6) through which hot spring water flows from outside and having an upper chamber (3) having a first exhaust port (4) at the top and a second exhaust port (28) at the top ( 1) A hot water storage room (2) is formed inside,
A receiving plate (9) for separating gas by colliding hot spring water discharged from the nozzle in front of a nozzle (8) provided at the tip of the inflow port, and a plurality of baffle plates (under the receiving plate) A primary gas separator (12) consisting of 10) in the upper chamber (3),
A water level sensor (31) that senses the water level in the hot water storage chamber and controls the submersible motor (21) is provided above the hot water storage chamber (2), and gas is separated from the liquid by the centrifugal force of the submersible motor (21). A gas separator, characterized in that an outlet (24) is provided at the upper end of a hot water pipe (23) connected to a secondary gas separator (20) having a plurality of separators (22).   The primary gas separator (12) is spaced between the tip of a nozzle (8) provided at the tip of an inflow port (6) provided in the horizontal direction on the upper side of the upper chamber and the receiving plate (9). A portion (16) is provided, and a plurality of small holes are provided on the entire surface below the receiving plate so that a plurality of baffle plates (10) having a downward slope can be removably provided in the upper chamber (3). The gas separator according to claim 1, wherein   The secondary gas separator (20) is formed by connecting a hot water pipe (23) connected to the outlet (24) to the upper part of a plurality of separators (22) connected to the upper part of the submersible motor (21), It is provided in the second chamber (2b) of the hot water storage chamber so that gas separated from the hot spring water fed into each separator (22) by centrifugal force is discharged into the hot water storage chamber (2). The gas separator according to claim 1.   The water level sensor (31) is composed of first, second, third, fourth and fifth electrode rods (31a, 31b, 31c, 31d, 31e) having different lengths suspended from above in the hot water storage chamber (2), Between the said 1st-4th electrode rod (31a, 31b, 31c, 31d) from which the height which detects the water level of hot spring water differs, respectively, and the 5th electrode rod (31e) which has the earth function located in the lowest part The gas separator according to claim 1, wherein the rotation speed of the submersible motor (21) is adjusted by inverter control by alternately connecting the two.   An opening (17a) is provided at the lower part of the upper partition wall (17) suspended from the inner lower part of the upper chamber (3), and is raised from the bottom surface of the hot water storage room with a space between the upper partition wall. A weir portion (18a) is formed at the upper end of the lower partition wall (18) provided, and the hot water storage chamber is formed by a communication passage (19) provided between the upper partition wall (17) and the lower partition wall (18). The gas separator according to claim 1, wherein the first chamber (2a) and the second chamber (2b) are connected to each other.   The hot spring tank (1) is provided with a level gauge (14) for checking the water level of hot spring water stored in a hot water storage chamber (2) provided in an intermediate portion. The gas separator as described.   The gas separator according to claim 1, wherein the hot spring tank (1) is provided with an overflow pipe (29) in an upper part of a hot water storage chamber (2) provided therein.

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