JPH0217205B2 - - Google Patents

Description

[Detailed Description of the Invention] <<Industrial Application Field>> The present invention relates to a gas-liquid separation device for separating methane gas, etc., which self-produces with hot water at hot spring areas, etc., from water and making it possible to use the gas as fuel. In particular, it is a gas-liquid that not only has the gas-liquid separation function, but also makes it possible to adjust the gas pressure so that the pressure of the gas supplied is always constant even if the pressure of the self-injected gas such as methane gas fluctuates. This invention relates to a separated gas pressure regulator.

《Prior art》 Conventionally, in order to achieve the above objectives,
The gas-liquid separator is combined with a completely separate pressure regulator.

In other words, the gas-liquid separator performs primary separation by spraying gas-containing water into the column in a shower, and if necessary, performs secondary separation such as condensation treatment to obtain separated gas. For example, this separated gas is introduced into a liquid ring type wet gas holder, and the holder, which is a separate body, maintains a constant gas pressure, which is then supplied to the consumer, which is gas utilization equipment. Even if the pressure of the ejected gas fluctuates, it is possible to always send a constant amount of fuel gas, etc.

For this reason, when using the above conventional example, it is necessary to obtain a pressure regulating device in addition to the gas-liquid separation device, which not only increases costs but also requires a considerable amount of installation space, and it is necessary to connect both devices. Construction work will also become essential.

<<Problems to be Solved by the Invention>> In view of the above-mentioned difficulties, the present invention provides primary and secondary gas-liquid separation chambers and a liquid retention chamber capable of retaining the primary separated liquid in one container. At the same time, the liquid retention chamber is appropriately provided with an overflow passage for the primary separated liquid,
In addition to providing a primary separation gas discharge passageway, the liquid retention chamber and the secondary gas-liquid separation chamber are appropriately connected to allow ventilation of the primary separation gas and flow of the secondary separation liquid. Secondary gas-liquid separation is possible, and the gas inside the vessel is The purpose is to make it possible to stabilize the pressure, thereby allowing one device to have not only a gas-liquid separation function but also a pressure regulation function, thereby solving the deficiencies of the conventional method.

<Means for Solving the Problems> In order to achieve the above object, the present invention includes a primary gas-liquid separation chamber into which a gas-containing liquid is introduced into the container body, and a primary gas-liquid separation chamber in which the gas-containing liquid is introduced. There is a liquid retention chamber through which the obtained primary separated liquid flows down and is retained, and the primary separated gas passes through. The secondary separated liquid is allowed to flow down into the liquid retention chamber through a liquid return pipe, and a secondary gas-liquid separation chamber is provided in which the secondary separated gas is supplied from the supply outlet to the gas demand destination. is provided with an overflow passageway through which the primary separated liquid staying in the same room can overflow, and a primary separation gas discharge passageway having a discharge end at a level higher than the overflow level of the passageway,
The gas communication pipe and the lower end inlet of the gas discharge passage are sequentially opened to a lower level than the discharge end, and the lower end inlet and the lower end discharge port of the overflow passage and the liquid return pipe are both opened to release the gas. It is an object of the present invention to provide a gas-liquid separation gas pressure regulating device characterized by opening at a lower level than the lower end inlet of the passage.

<<Operation>> When water and a liquid containing gas such as methane gas are released into the primary gas-liquid separation chamber inside the vessel, the primary gas-liquid separation is performed here, and the primary separated liquid is transferred to the next stage liquid retention chamber. The primary separated gas such as methane gas passes through the gas phase of the liquid retention chamber above the surface of the retained liquid and enters the secondary gas-liquid separation chamber from the gas connecting pipe, where it undergoes the secondary gas-liquid separation. The secondary separated gas obtained thereby is supplied to the consumer, and the secondary separated liquid is flowed down from the liquid return pipe into the liquid retention chamber.

When the above gas-liquid separation is being performed, if the pressure of gas such as methane gas introduced into the vessel rises above the set maximum pressure value, the first separated liquid that remains will be When the liquid is pressed down, the liquid is released from the overflow passage to the outside, the liquid level falls, and when the liquid level finally falls below the lower end inlet of the gas release passage, the gas inside the vessel is The gas pressure is released from the passage to the outside, and the gas pressure is kept in equilibrium at the set maximum pressure value.

If the gas pressure drops below the set minimum pressure value, water will stop overflowing from the overflow passage, the liquid level of the primary separation liquid will rise, and the liquid will flow to the lower end of the gas connecting pipe. The inlet is blocked, and the primary separation gas no longer flows into the secondary gas-liquid separation chamber, so the pressure of the gas inside the vessel increases and water starts overflowing from the overflow passage again. Equilibrium is maintained at this set minimum pressure value.

Furthermore, when the gas pressure is between the maximum value and the minimum value, the same amount of primary separated liquid flowing into the liquid retention chamber is released from the overflow passage and an equilibrium state is reached. Gas is supplied while the pressure value remains unchanged.

<<Example>> To describe the present invention in detail with reference to an illustrated example, a vessel body 1 includes a primary gas-liquid separation chamber 2 on the upper left side thereof.
A liquid retention chamber 3 is provided across the entire bottom area adjacent to the same chamber, and a secondary gas-liquid separation chamber 5 is further provided adjacent to the primary gas-liquid separation chamber 2 at the upper right side of the vessel body 1 via a partition wall 4. There is.

Here, a gas-liquid introduction pipe 2a is provided through the primary gas-liquid separation liquid 2 through which the liquid A containing water containing methane gas is introduced and discharged, and the tip thereof is a tapered nozzle 2b. The gas-liquid separation plate 2c, which is arranged at the bottom of the chamber 2 and partitions it from the liquid retention chamber, is provided with a large number of small holes 2d, 2d, etc. using punching plates, mesh plates, etc., as described later. It is designed to have a sufficient separation effect for separating liquids such as water.

Next, in the liquid retention chamber 3, an overflow passage 6 and a gas discharge passage 7 are fixedly provided on the side wall of the vessel body so as to communicate between the inside and outside of the vessel body 1, and in the illustrated example, either passage 6, 7 The overflow passage 6 is also formed by penetrating a pipe, but in particular, the overflow passage 6 may be constructed with a partition wall structure, and in this case, the overflow level _L , the discharge end 7a of the gas discharge passage 7 is disposed above, and the level of the lower end inlet 6b of the overflow passage 6 is lower than the lower end inlet 7b of the same passage 7,
It is located near the bottom of the liquid retention chamber 3 and is open.

Next, to explain the secondary gas-liquid separation chamber 5, the chamber 5 has a bottom wall 5a formed in the shape of a funnel.
A desired plurality of gas connecting pipes 8, 8 are provided around the entire circumference of the
... is installed vertically, and its lower end inlet 8
a opens into the liquid retention chamber 3, and the bottom wall 5 of the same
A liquid return pipe 9 extends vertically to the liquid retention chamber 3 at the axial center position which is the lowermost end of a.

At this time, the lower end inlet 8a of the gas connecting pipes 8, 8, . The lower end inlet 9a of the liquid return pipe 9 and the overflow passage 6
The lower end inlet 6b is opened at a low level.
Furthermore, at the upper level of the secondary gas-liquid separation chamber 5, a separator 10 formed by swash plates 10a, 10a, . . . ...Instead, a honeycomb body may be adopted, and the same room 5
At the top of the box is a gas supply outlet 1 that opens into the vessel body 1.
1 is opened and connected to a gas fuel device (not shown), and in FIG. 1, the solid arrow indicates the primary separated gas g ₁ , which will be described later, and the broken line indicates the primary separated liquid gas. r ₁ , B indicates the retained liquid stored in the liquid retention chamber 3 of the separated liquid gas r ₁ , the one-dot chain arrow indicates the secondary separated gas g ₂ , and the two-dot chain arrow indicates the secondary separated liquid gas r ₂ It shows.

Next, FIGS. 2a and 2b show different embodiments of the gas connecting pipe 8 and the gas discharge passage 7 shown in FIG. It is possible to adjust the pitch.

That is, a connecting base pipe 8b is provided through the bottom wall of the secondary gas-liquid separation chamber 5, and an O2 pipe is installed in the bottom wall of the secondary gas-liquid separation chamber 5 so that it can be raised and lowered freely.
The elevation adjustment tube 8d fitted through the ring 8c is
It can be fixed at a desired level with a tightening screw 8e, and in the same way, the gas discharge passage 7 is formed by fitting an elevation adjustment pipe 7d into a curved pipe 7c having the discharge end 7a, an O-ring 7e, It is variable to a desired level using a tightening screw 7f.

Therefore, as described above, the lower end inlet 7b of the gas discharge passage 7 is located at a height Lmax lower than Lo, with the overflow level L ₀ from the overflow passage 6 as a reference, while the lower end inlet 8a of the gas connecting pipe 8 is located at Lmin, which is the intermediate position between Lo and Lmax above, and thereby, as described later, the gas pressure P in the vessel 1 becomes the water head pressure, which is the set maximum pressure value, Lo - Lmax = Pmax. From this, the set minimum pressure value Lo−Lmax=
This means that pressure regulation can be controlled within a range up to the head pressure of Pmin.

Therefore, if the gas-containing liquid is force-fed into the primary gas-liquid separation chamber 2 through the gas-liquid introduction pipe 2a and ejected from the nozzle 2b, the pressure will be reduced by the discharge into the indoor space, and not only the free gas but also the dissolved gas will be degassed. Since the primary separated gas g ₁ and the primary separated liquid gas r ₁ are obtained, the liquid r ₁ such as water flows down from the ports 2 d, 2 d, etc. of the gas-liquid separation plate 2 c and enters the liquid retention chamber 3. It falls to the bottom and is stored.

On the other hand, the primary separation gas g ₁ also passes through the ports 2d, 2d, . When the gas g2 enters and hits the swash plate 10a of the separator 10, secondary separation of gas and liquid is performed, and then the secondary separated gas _g2 is sent from the supply outlet to the consumer, and the separator 11 The secondary separated liquid r ₂ is dropped and returned to the liquid retention chamber 3 from the liquid return pipe 9.

Here, the role of the gas-liquid separation plate 2c having the above-mentioned ports 2d, 2d, etc. is to
This is to prevent small water droplets from being entrained with the gas and entering the secondary gas-liquid separation chamber 5 by making the holes 2d... into appropriate small holes. Attach it to the rim of the mouth,
This is allowed to grow into large water droplets, which flow down into the liquid retention chamber 3 to perform the function of gas-liquid separation.

The gas-containing liquid A sent into the container body 1 in this way can be sent to the consumer as fuel etc. by gas-liquid separation, but in this case, in the present invention, the gas in the container body 1 , between Pmax and Pmin mentioned above, the pressure is controlled as follows.

That is, if the liquid A contained in the container body 1 is introduced into the container body 1, the gas pressure P in the container body 1 becomes
When it becomes larger than the above-mentioned Pmax, if the level of the retained liquid B in the liquid retention chamber 3 is Lw, the pressure relationship becomes P>Pmax>Lo-Lw, so the retained liquid B becomes Water is lowered by the gas pressure P and overflows from the overflow end port 6a of the overflow passage 6, and the liquid level decreases from this, and when it reaches Lmax, the lower end inlet 7b of the gas discharge passage 7 opens. Since it is opened to the gas phase, gas is released from the passage 7 and the gas pressure P decreases, and the gas pressure P reaches an equilibrium state at the set maximum pressure value determined by the water head difference Pmax. It can be maintained.

Next, when the gas pressure P in the container body 1 is lower than the above Pmin, P<Pmin<Lo−
Lw, the overflow of accumulated water B stops, and the liquid level becomes Lw.
increases and reaches Lmin, the retained liquid B
As a result, the lower end inlet 8a of the gas connecting pipe 8 is closed and the transfer of the primary separation gas _g1 is stopped, and since P<Pmin, the liquid level Lw further rises and P becomes Lo-
When reaching Lw, flooding starts again, and an equilibrium state is maintained at Pmin.

Furthermore, when the gas pressure is between Pmax and Pmin, P=Lo-Lw, so only the amount of liquid flowing into the liquid retention chamber 3 of the vessel body 1 overflows as an overflow, which reduces the gas pressure. P will be maintained at the pressure value in equilibrium.

The gas pressure P that fluctuates in this way is expressed as Pmax
It is possible to adjust the pressure between
All you have to do is set the desired Lo−Lmax=Pmax and Lo−Lmin=Pmin as described above, and these
When you want to obtain various set values for Pmax and Pmin, adjust the lengths of the gas discharge pipe 7 and the gas connecting pipe 8 as shown in Fig.
It is better to be able to adjust the height of a.

Here, as mentioned above, when the gas pressure P is smaller than Pmin, the lower end inlet 8a of the gas connecting pipe 8 is in a water-sealed state, and the gas delivery is stopped, resulting in no trace of fuel at the demand end. A problem arises.

However, this problem can be resolved by adopting a separate method that will never leave a trace, or if the gas pressure drops extremely, it is due to a lack of gas, gas exhaustion, or while being sent to the vessel body 1. This means that an abnormal situation such as a gas leak has occurred, and gas equipment usually does not function properly even if gas is supplied to customers at such low pressure. Therefore, in some cases, it may be desirable to stop the gas supply in this way.

However, if you do not like this, as a solution to the above problem, install a pressure sensor in the secondary gas-liquid separation chamber 5 or in the gas supply line, and when abnormally low pressure is detected, an alarm will be issued and the device will be left unattended. The spare gas storage equipment may be operated manually or automatically, or the on-off valve 12a of the separate gas supply line 12 leading to the secondary gas-liquid separation chamber 5 may be operated automatically or manually as shown in FIG. Alternatively, the gas may be opened and the low pressure gas may be directly delivered as required.

<<Effects of the Invention>> As described above, the present invention not only enables separation of gas and liquid within a single container, but also utilizes the phenomenon in which the level of the liquid changes due to fluctuations in the gas pressure at which the retained liquid flows. Since the pressure of the gas inside the vessel can also be adjusted, this type of equipment can be made smaller and equipment investment can be reduced, and the floor space occupied by the equipment can be significantly reduced. Since there are no moving parts, there is no need to worry about breakdowns, and of course there is no problem in using hot water or other liquids as a separating liquid.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional front view showing one embodiment of the gas-liquid separation gas pressure regulating device according to the present invention, and FIG. FIG. 1... Vessel body, 2... Primary gas-liquid separation chamber, 2c...
Gas-liquid separation plate, 2d...Port, 3...Liquid retention chamber, 5
...Secondary gas-liquid separation chamber, 6...Overflow passage, 6a...Lower end inlet, 7...Gas discharge passage,
7a...discharge end port, 7b...lower end inlet port, 8...
Gas connecting pipe, 8a...lower end inlet, 9...liquid return pipe, 9a...lower end outlet, 10...separator,
10a... Swash plate, 11... Supply outlet, A... Gas-containing liquid, Lo... Overflow level, g ₁ ...
Primary separation gas, g ₂ ...Secondary separation gas, r ₁ ...Primary separation liquid, r ₂ ...Secondary separation liquid.

Claims (1)

[Claims] 1. Inside the vessel, there is a primary gas-liquid separation chamber into which a gas-containing liquid is introduced, a primary separated liquid obtained in this primary gas-liquid separation chamber flows down and remains, and the primary separated gas passes through. a liquid retention chamber, into which the primary separated gas flows through a gas connection pipe, and a secondary separated liquid obtained by gas-liquid separation of the separated gas flows down into the liquid retention chamber through a liquid return pipe; , a secondary gas-liquid separation chamber is provided in which the secondary separated gas is supplied from the supply outlet to the gas demand destination, and the liquid retention chamber is provided with an overflow passage through which the primary separated liquid remaining in the same chamber can overflow. and a gas discharge passage for primary separated gas having a discharge end at a level higher than the overflow level of the passage, and the gas communication pipe and the lower end inlet of the gas discharge passage are sequentially connected to a lower level than the discharge end. and a lower end inlet and a lower end outlet of the overflow passage and the liquid return pipe, respectively, are opened at a lower level than the lower end inlet of the gas discharge passage. Pressure device. 2. The primary gas-liquid separation chamber and the liquid retention chamber are separated by a gas-liquid separation plate having a large number of ports, and the gas-liquid separation in the secondary gas-liquid separation chamber is separated by a swash plate or a honeycomb separator, respectively. A gas-liquid separation gas pressure regulating device according to claim 1, which is specially implemented. 3. The gas-liquid separation gas pressure regulating device according to claim 1, wherein one or both of the gas discharge passage and the gas communication pipe can be adjusted in height at the lower end inlet.