JPH0425212Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention can be attached to gas piping for compressed air, etc.
Regarding separators that separate water and oil from gas and remove them from the system, in particular, a swirling flow is generated within the separator casing to separate water and oil droplets from gas using the action of centrifugal force. It is related to something that allows water and oil droplets to pass through the outlet, allowing the separated water droplets and oil droplets to flow down and drain them to the outside of the casing with a drain valve.

This type of steam/water separator is designed to achieve the highest separation efficiency using centrifugal force due to swirling, assuming the most common usage conditions (mainly flow velocity) in actual use. However, usage conditions often change due to fluctuations in sources such as steam and compressed air, and fluctuations in usage loads.

Prior Art Conventional swirling type steam/water separators are, for example,
This is disclosed in Japanese Patent Application Laid-open No. 187910/1983. In this method, a cylindrical partition member whose lower part expands downward is placed below a swirling vane provided at the upper part of the casing to swirl the fluid, and the upper part is connected to the outlet through the inside of the partition member. , an inlet is opened at the upper part of the swirling vane on the outside of the partition member, and a drain valve is installed at the lower part of the casing. The fluid flowing in from the inlet is swirled by swirling vanes, and water droplets in the gas are shaken out and separated, as they flow downward. Gas rises inside the partition member and flows out from the outlet, and water droplets flow down along the inner circumferential wall of the casing and are removed to the outside by a drain valve.

Problems to be Solved by the Present Invention In this case, there is a problem that when the usage conditions change and the flow rate changes, the separation efficiency of air and water deteriorates.

That is, when the flow rate becomes slow, the swirl becomes weaker, and a sufficient separation effect due to the action of centrifugal force cannot be obtained, resulting in poor separation efficiency. On the other hand, when the flow speed increases, the swirling force becomes stronger than necessary and the water droplets are swung outward.
It becomes easy to get caught up in the gas flow again, and the separation efficiency also deteriorates.

The technical problem of the present invention is to prevent the separation efficiency from decreasing even if the flow rate changes due to changes in usage conditions.

Means for Solving the Problems The technical means of the present invention taken to solve the above-mentioned technical problems is to arrange a cylindrical partition member in the upper part of the casing and to connect the partition member and the casing outside the casing. In a steam/water separator, an annular space is formed between the two, a swirling blade is arranged in the annular space, the upper part of the annular space is connected to the inlet, the lower part is connected to the drain valve part, and the hole inside the partition member is connected to the outlet. , a resistance plate is arranged below the swirling vane, the resistance plate is made of an elastic material such as synthetic rubber so that it can be deformed, and the resistance plate is attached perpendicular to the central axis of rotation by the swirling vane. It is.

Effect The operation of the above technical means is as follows.

The fluid entering from the inlet flows downward while being swirled by means such as swirl vanes in the upper part of the casing.
When the flow velocity is low, the centrifugal force due to swirling is weak and the water droplets contained in the fluid are not sufficiently separated by centrifugal force alone, but most of the swirling flow that is not sufficiently separated is Upon collision, the water droplets adhere to the surface of the resistance plate and drip downward, thereby reliably separating air and water. Conversely,
When the flow velocity is high, the resistance plate acts as a resistance to the swirling flow in the vertical position, weakening the swirling flow, and thereby preventing water droplets that have been separated from being re-engulfed into the gas flow, thereby preventing a drop in separation efficiency. The water droplets are separated and the gas passes through the inside of the partition wall toward the outlet. Further, the separated water droplets drip downward, flow down to the drain valve section, and are removed to the outside by the drain valve.

Effect of invention The present invention produces the following specific effects.

Even if the operating conditions change and the fluid flow rate changes,
By colliding the fluids or weakening the swirling flow, it is possible to prevent the separation efficiency from decreasing.

Embodiment An embodiment illustrating a specific example of the above technical means will be described (see FIG. 1).

Fasten the upper body 1, lower body 2, and bottom cover 3 with bolts 20,
21 to form the casing 4 of the separator. The upper body 1 has a fluid inlet 5 and an outlet 6 coaxially formed in the upper part thereof.

Inside the upper body 1, a double substantially cylindrical partition member 7 is arranged. The outer cylinder has a straight shape and is formed lower than the inner cylinder. The inner cylinder has a shape that gently widens at the top and bottom. Note that the outer cylinder may be omitted and the upper body 1 may also serve as the outer cylinder. A tapered screen 8 is arranged outside the partition member 7. The inlet 5 is connected through a screen 8 to an annular space 9 between the double cylindrical shapes of the septum member 7, and the inside of the septum member 7 is connected to the outlet 6.
A swirl vane 12 is formed integrally with the partition member 7 in the annular space 9.

A rectangular resistance plate 25 made of a thin synthetic rubber plate is formed on the inner periphery of the lower body 2 and below the swirl vane 12, with one end press-fitted into the lower body 2 and the other end being a free end. As shown in FIG. 1, the resistance plate 25 is located in a substantially horizontal state when installed, and is located in the same state when the flow velocity is slow during use. When the flow velocity is high, the resistance plate 25 is displaced downward to a nearly vertical position due to the force received from the fluid.

A spherical float 14 is housed in a drain valve chamber 13 formed by a lower body 2 and a bottom cover 3. A drain valve seat 15 is attached to the inner end of a drain port 16 in the bottom cover 3.
Attach the float cover 17 to cover the float 14. A connecting opening 18 is provided at the bottom of the float cover 17.
Open. A ventilation hole 19 is provided in the float cover 17.

Further, in order to further separate fine water after separation by the swirl vane 12 and the resistance plate 25, a filter 11 is separately provided on the outlet 6 side of the swirl vane 12.
That is, a cylindrical partition tube 10 extending below the partition wall member 7 is fitted inside the partition wall member 7 . A filter 11 is filled inside the partition cylinder 10.
The filter 11 is a thin wavy net made of thin metal wires and glass fibers, stacked so that the waves alternate, and its outer diameter is large enough to fit into the hole of the partition tube 10. The filter 11 is prevented from coming off by screens 22 and 23 attached above and below.

Fluid entering the annular space 9 from the inlet 5 is swirled by swirl vanes 12. If the flow rate is slow and sufficient centrifugal force cannot be obtained, the air and water collide with the resistance plate 25 and are separated. When the flow velocity is high, the swirling flow is weakened by the plurality of resistance plates 25 to prevent entrainment of water droplets once separated. The separated water droplets flow down and enter the interior through the connection opening 18 of the float cover 17. At this time, the gas inside the float cover 17 exits to the outside through the ventilation hole 19. The float 14 rises and falls according to the water level, opens and closes the drain valve port of the drain valve seat 15, and discharges only water from the drain port 16 to the outside of the system.

Further, fine water that cannot be separated by the swirl vanes 12 and the resistance plate 25 flows into the inside of the partition tube 10 from the lower end, is captured by the filter 11, and only gas flows toward the outlet 6.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a steam separator according to the present invention. 2...Lower body, 3...Bottom cover, 5...Inlet, 6...
...Outlet, 7... Partition member, 9... Annular space, 12
...Swirling vane, 25...Resistance plate.

Claims (1)

[Scope of utility model registration request] A cylindrical partition member is arranged in the upper part of the casing to form an annular space between the partition member and the casing outside the casing, a swirling blade is arranged in the annular space, and the upper part of the annular space is used as an inlet, and the lower part is used as an inlet. In a steam/water separator in which the hole inside the partition wall member is connected to the outlet in the drain valve part, a resistance plate is arranged below the swirling blade, and the resistance plate is made of an elastic material such as synthetic rubber and can be deformed. A steam/water separator having a resistance plate installed perpendicularly to the central axis of rotation by the swirling vanes.