JPH07185525A - Gas separator for water piping - Google Patents

Abstract

PURPOSE:To provide a gas separator for water piping in which both the ends of water piping on the upstream side and that on the down stream side are arranged at a level and the breadth of whose installation space is small even if a turning flow type gas separator is used. CONSTITUTION:An inlet connecting part 1 for connecting it to the end of water piping A1 on the upstream side, an outlet connecting part 2 for connecting it to the end of water piping A2 on the downstream side, and a gas separating tank 4 in which water is received from the upper part and discharged from the lower part and air in the water is floated and separated in a process of water downflow inside are provided. A straight short pipe 3 in which the inlet connecting part 1 and the outlet connecting part 2 are formed at one end and the other end in the axial direction respectively are provided. A water feeding pipe 5 to the gas separating tank 4 branches off from and is connected to the short pipe 3, and a water discharging pipe 6 from the gas separation tank 4 joins and is connected to the short pipe 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water pipe for discharging air in water flowing through the water pipe, which is interposed in the middle of various water pipes such as cold water pipes for air conditioning, hot water pipes, water supply pipes and hot water supply pipes. An air-water separator, specifically, an inlet connection for connecting to the end of the upstream water pipe, an outlet connection for connecting to the end of the downstream water pipe, and receiving water from the top And a water-air separation tank that floats and separates the air in the water during the downward flow process of water discharged from the lower part.

[0002]

2. Description of the Related Art When air is mixed in water flowing in a water pipe, the air is accumulated in uneven parts of a water pipe or a heat exchange part, which causes an air lock that hinders the flow of water.
Alternatively, noise may be generated due to a propagation sound generated when air flows, or vibrations of equipment such as pipes and pumps may occur.

Therefore, an air / water separator is installed in the water pipe. In the conventional air / water separator for water pipe, as shown in FIG. 4, the upstream side of the water supply pipe 5 to the air / water separation tank 4 is provided. The inlet connection 1 for the end of the water pipe A1 was formed, and the outlet connection 2 for the end of the downstream water pipe A2 was formed in the water supply pipe 6 from the steam separation tank 4. That is,
The entire amount of water flowing in the water pipe was made to flow into the air / water separation tank 4 for air / water separation.

[0004]

However, according to the above-mentioned conventional technique, since the inlet connection portion is arranged above and the outlet connection portion is arranged below, respectively, the water pipe on the upstream side is naturally installed at the time of installation. Such an arrangement is also required at the end of the water pipe and the end of the water pipe on the downstream side, and as a result, a vertical step is generated in the layout of the water pipe at the steam separator installation part. It made the design and construction of piping equipment difficult.

In particular, the water / water separation tank is provided with an inner peripheral surface of a cylindrical surface around the vertical axis, into which water flows in from the tangential direction of the inner peripheral surface and is discharged in the tangential direction. By rotating and lowering around the vertical axis, the water retention time in the water / water separation tank is increased for the height of the water / water separation tank, and the water / water separation is performed by the centrifugal force accompanied by the rotation. In the case of using a swirl type that is configured to facilitate the separation of air and water, the diameter of the air / water separation tank becomes about three times the size of the water pipe when swirling water. As a result, the air / water separation tank largely protrudes laterally from the water pipe, and the installation space for the air / water separation tank becomes large. This restricts the selection of the installation location, making it more difficult to design and construct water piping equipment.

It is an object of the present invention that the ends of the water pipe on the upstream side and the water pipe on the downstream side can be arranged at the same level, and even if a swirl type water / water separation tank is used, the installation space can be saved. The point is to provide a steam separator for water piping having a small width.

[0007]

A feature of a water / water separator for a water pipe according to the first aspect of the present invention is that the inlet connection portion is at one end in the axial direction and the outlet connection portion is at the other side in the axial direction. Providing a straight tubular short pipe formed at each end, the water supply pipe to the steam separation tank is branched and connected, and the water supply pipe from the steam separation tank is joined to the short pipe. is there.

The feature of the water / water separator for a water pipe according to the second aspect of the present invention is that in the first aspect, the end of the water supply pipe is arranged in the short pipe so as to open toward the upstream side, and the water supply pipe is provided. The end portion of is located in the short pipe so as to open toward the downstream side.

[0009]

As a result of repeated experiments and studies, the inventors of the present invention have found that when the diameter of the water pipe is large (the pipe size is large), the entire amount of water in the water pipe does not have to pass through the steam separation tank. , It has been found that just passing a part of water can exert a water-water separation performance that is practically acceptable.

Based on this knowledge, a straight tubular short pipe that connects the end of the upstream water pipe and the end of the downstream water pipe is provided, and this short pipe is connected via a water supply pipe and a water supply pipe. By connecting the air / water separation tank, a part of the water flowing in the short pipe is bypass-flowed to the air / water separation tank to perform air / water separation. While the water is supplied from the lower part, the end part of the water pipe on the upstream side and the end part of the water pipe on the downstream side can be arranged at the same level while separating the water and steam.

Moreover, since the air / water separation tank, the water supply pipe, and the water supply pipe need to have the ability to process a part of the water in the water pipe, not the whole amount, the air / water separation tank can be a small-sized one with a small diameter. Even if the water supply pipe and the water supply pipe have a small diameter, and as a result, even if a swirl type whose diameter is about three times as large as the water supply pipe or the water supply pipe is used, The amount of the water / water separation tank protruding laterally from the short pipe can be made extremely small, and the installation space can be made to have a width that is approximately the same as or slightly larger than the diameter of the water pipe.

Particularly, when the end portion of the water supply pipe is arranged in the short pipe so as to open toward the upstream side, and the end portion of the water supply pipe is arranged in the short pipe so as to open toward the downstream side, The dynamic pressure of the flowing water in the water pipe can supply the water in the short pipe to the steam separation tank via the water supply pipe, while the ejector effect of the flowing water in the short pipe allows suction of water from the water supply pipe. While connecting the tank to the short pipe, so to speak,
By supplying water to the air / water separation tank and draining water from the air / water separation tank reliably, the amount of treated water in the air / water separation tank can be made sufficient.

[0013]

As described above, according to the present invention, there is no vertical step in the layout of the water pipe at the installation portion of the water pipe, while the water vapor separation is practically sufficient.
Since the air / water separation tank is small, the width of the installation space is small and the design and construction of the water piping equipment can be facilitated. Especially, the swirl type with excellent air / water separation performance is used as the air / water separation tank. It has become possible to provide a steam-water separator for water pipes that is useful when using the above.

In particular, according to the second aspect of the present invention, since the water supply and the water supply to the air / water separation tank can be reliably performed, the intended air / water separation can be surely performed sufficiently while using the small air / water separation tank. It can be carried out.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 and 2, a water / water separator for a water pipe, which is interposed in the middle of a water pipe for air conditioning and separates and removes air in water flowing in the water pipe. This is an inlet connection part 1 (flange) for connecting in a flange connection form to the end of the water pipe A1 located upstream of the installation location, and a flange at the end of the water pipe A2 located downstream. A straight tubular short pipe 3 which has an outlet connection portion 2 (flange) connected in a connection form and serves as a connection pipe for connecting the upstream water pipe A1 and the downstream water pipe A2 in the connected state.
And a water / water separation tank 4, a water supply pipe 5, and a water supply pipe 6 are provided.

The short pipe 3 has the same pipe size as the water pipes A1 and A2.

The air / water separation tank 4 has an inner peripheral surface of a cylindrical surface around the vertical axis X1, and has an inflow port 4A into which water flows in from the tangential direction of the inner peripheral surface, and a lower part. And a water outlet 4B for tangentially discharging water, an automatic or manual air vent valve 7 at the top, and a drain valve 8 for draining at the bottom. Then, due to the inflow of water in the tangential direction at the upper part and the water supply in the tangential direction at the lower part, the water is vertically moved inside the vertical axis X1.
It descends while swirling around, and in the process of swirling and descending, air in the water is separated. In detail,
By swirling, the vertical distance between the inflow port 4A and the water supply port 4B in the steam / water separation tank 4 is made small, that is, the height of the steam / water separation tank 4 is made small, but the flow path length in the tank is made large. It is configured so that the residence time of the water in the air / water separation tank 4 (that is, the floating / separation time of air) is increased, the floating / separation performance is improved, and the air / water separation is promoted by the centrifugal centrifugal force. There is.

The water supply pipe 5 is branched and connected to the short pipe 3 at one end and the inlet 4A of the steam separation tank 4 at the other end.
To supply the water in the short pipe 3 to the steam separation tank 4, and one end of the water supply pipe 5 is opened at the axial center X2 position in the short pipe 3 toward the upstream side. It is arranged to In other words, the dynamic pressure of the flowing water in the short pipe 3 supplies the water to the steam separation tank 4 via the water supply pipe 5.

The water supply pipe 6 is connected at one end to the water supply port 4B of the steam-water separation tank 4 and is joined at the other end to the short pipe 3 to connect the water in the steam-water separation tank 4 to the short pipe 3. The water supply pipe 5 has the same diameter as that of the water supply pipe 5, and the other end of the water supply pipe 6 is opened at the axial center X2 position in the short pipe 3 toward the downstream side. It is arranged. That is, due to the ejector effect of the flowing water in the short pipe 3, the water in the steam-water separation tank 4 is passed through the water pipe 6 to the short pipe 3
It is configured to be put back in.

According to the above construction, the water in the short pipe 3 is supplied to the steam / water separation tank 4 via the water supply pipe 5, and the air is removed by passing through the steam / water separation tank 4, thereby the water pipe. 6
By being returned to the short pipe 3 via, the separation of steam and water is performed.

To give examples of real numerical values of each part of the steam / water separator having the above-mentioned structure, the diameter D of the steam / water separation tank 4, the diameter d of the water supply pipe 5, the length L of the short pipe 3, and the axis X2 of the short pipe 3 are given. From inlet 4A
To the height H and the internal volume of the steam separation tank 4,
200A, 65A, 88 when the size of the water pipes A1 and A2 is 200A and the standard flow rate is 3900 l / min.
It is 0 mm, 820 mm, and 56 liters. By the way, in the conventional steam separator, the diameter D of the steam separation tank 4 is 61
It becomes 0A.

[Other Embodiments] In the above embodiment, one end of the water supply pipe 5 and the other end of the water supply pipe 6 are both arranged at the axial center position in the short pipe 3, but as shown in FIG. One end of the pipe 5 may be arranged in the upper part of the short pipe 3 and the other end of the water supply pipe 6 may be arranged in the lower part of the short pipe 3, respectively.

In the above embodiment, the air / water separation tank 4 for separating water / water by swirling and lowering the water is shown. However, the water / water separation tank 4 does not swirl the water but simply lowers it to remove the air / water. Water separation may be performed.

In the above embodiment, an example of real numerical values in the case where the water pipes A1 and A2 have a pipe size of 200 A has been given. However, the present invention is suitable for water pipes A1 and A2 having a pipe size larger than 100 A. Yes, the larger the size of the water pipes A1 and A2, the larger the size of each part of the steam separator.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

1 is a plan view

[Figure 2] Side view of notch

FIG. 3 is a cutaway side view showing another embodiment.

FIG. 4 is a side view showing a conventional technique.

[Explanation of symbols]

 A1 water pipe A2 water pipe 1 inlet connection 2 outlet connection 3 short pipe 4 steam separation tank 5 water supply pipe 6 water pipe

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshiro Tomioka 3-24 Ikaga Midoricho, Hirakata-shi, Osaka San-ess Industry Co., Ltd.

Claims (2)

[Claims] 1. An inlet connection part (1) for connecting to an end of an upstream water pipe (A1) and a downstream water pipe (A2).
An outlet connection part (2) for connecting to the end part of the water, and a water-water separation tank (4) that receives the water from the upper part and discharges it from the lower part and floats and separates the air in the water during the downward flow process of the water inside. ) Is provided for the water pipe, and the inlet connection part (1) is provided at one end in the axial direction, and
A straight tubular short pipe (3) having an outlet connection portion (2) formed at the other end in the axial direction is provided, and the steam separation tank (4) is provided.
The water supply pipe (5) to the short pipe (3) is branched and connected, and the water supply pipe (6) from the water-water separation tank (4) is joined to the short pipe (3). Separator. 2. The end of the water supply pipe (5) is arranged in the short pipe (3) so as to open toward the upstream side, and the end of the water supply pipe (6) is placed in the short pipe (3). The steam / water separator for water piping according to claim 1, wherein the steam / water separator is arranged so as to open toward the downstream side.