JPH0634808Y2 - Steam water separator - Google Patents

Description

[Detailed Description of the Invention] Industrial field of application The present invention relates to a steam separator that is attached to a steam pipe or the like to separate water droplets in steam and discharge it to the outside of the system. Even if water drops or condensate occur,
The present invention relates to a steam-water separator for steam piping that does not allow water droplets or condensed water to pass through on the secondary side of the separator.

If water droplets or condensate is mixed in the steam pipe, there is a disadvantage that a water hammer is generated, damaging the pipe and equipment, or that the equipment using steam is not uniformly heated.

2. Description of the Related Art Conventionally, a steam separator having a separation section and a drainage valve section as disclosed in, for example, Japanese Utility Model Publication No. 62-42238 is attached to a steam pipe to automatically remove water droplets and condensed water in the pipe. It was excluded outside the system.

Problems to be Solved by the Invention In the above case, when a large amount of water droplets or condensate flows into the separator, there is a problem that they cannot be completely removed and pass to the secondary side. In other words, the drainage capacity of the drainage valve part is naturally limited, and when a large amount of water droplets or condensed water enters at the beginning of steam aeration, the water that cannot be removed accumulates in the drainage valve part and eventually overflows the outlet. Then it reaches the secondary side.

Therefore, the technical problem of the present invention is to obtain a steam separator that does not allow a large amount of water to pass through to the secondary side.

MEANS FOR SOLVING THE PROBLEM The technical means of the present invention, which has been taken to solve the above technical problems, is provided with a separating portion for separating steam and water by centrifugal force due to swirling in an upper space communicating with an inlet and an outlet. In a steam separator with a drain valve in the lower space, a valve seat member is placed between the separator and the outlet to partition the two parts, facing the valve seat member and closing at low temperature and opening at high temperature. A valve body connected to a temperature responsive member for valve is arranged.

Action The action of the above technical means is as follows.

A large amount of water flows in when the fluid temperature is relatively low, such as when steam is aerated. The valve body connected to the temperature responsive member closes the valve when the fluid temperature is low, thereby partitioning the separating section from the outlet to shut off the valve. When the low temperature fluid is discharged in the drain valve portion and the fluid temperature gradually rises, the temperature responsive member deforms and opens the valve, thereby connecting the separation portion and the outlet.

Effect of the Invention Even if a large amount of low-temperature fluid flows in during ventilation, the separation part and the outlet are blocked, and water does not pass to the secondary side. Therefore, a water hammer does not occur in the secondary side pipe of the separator. Further, the low-temperature fluid does not flow into the steam-using device, and the startup time of the device is shortened and the productivity is improved.

Example An example showing a specific example of the above technical means will be described (see FIG. 1).

The upper body 3 having the inlet 1, the separating portion 4, and the outlet 2 and the main body 6 having the drainage valve portion 5 are coupled with each other by the bolt 30, and the lid member 7 is coupled with the main body 6 by the bolt 31 to form a separator casing. Form.

The separation unit 4 screens the fluid flowing from the inlet 1
A swirl vane 8 for swiveling through 35 and a draining cylinder 9 are formed concentrically. A partition wall 10 for partitioning the separating portion 4 and the outlet 2 is formed inside the draining tube 9 integrally with the draining tube 9. A valve seat member (12) having a valve port (11) is screwed onto the partition wall (10). A rod-shaped valve body (13) is arranged coaxially with the valve opening (11) so as to face the valve seat member (12) with its lower end portion held by a holding plate (36). Partition wall
A plurality of bimetal discs 14 and coil springs 15 as temperature responsive members are mounted around the valve body 13 between the 10 and the holding plate 36 with a partition plate 37 interposed therebetween. The valve body 13 and the partition plate 37 are fixed to each other, and when the plurality of bimetal discs 14 are curved at a low temperature, the valve port 11 is closed (state shown in FIG. 1). When the fluid temperature rises and the bimetal disk 14 deforms and becomes flat, the valve body 13 is pushed down by the spring force of the coil spring 15 to open the valve port 11. The valve port 11 communicates with the outlet 2. The fluid containing the water droplets flowing in from the inlet 1 is swirled by the swirl vanes 8, and the water droplets having a large mass are swung outward by centrifugal force and flow down along the inner wall of the main body 6 to reach the drainage valve section 5. The fluid after the water droplets are separated reaches the outlet 2 through the inside of the draining cylinder 9 when the valve port 11 is opened.

The drain valve portion 5 is formed by disposing the hollow float 21 in the drain valve chamber 20 in a free state and screwing the drain valve seat 22 to the lid member 7. The drain valve seat (22) has a drain valve port (24) communicating with the drain port (23). An inverted cup-shaped float cover 25 is attached to the upper part of the hollow float 21 with bolts 32. The float cover 25 is provided with a through hole 26 for ventilation. The float 21 ascends and descends due to the amount of water accumulated in the drainage valve chamber 20, opens and closes the drainage valve port 24, and discharges water droplets and condensed water from the drainage port 23 to the outside of the system.

At the beginning of steam aeration, that is, when the temperature of the fluid passing through the separator casing is low, the bimetal disc 14 is curved and closes the valve port 11. Therefore, even if a large amount of water flows into the separator casing, it will not pass through the outlet 2 of the separator to the secondary side. When low-temperature water is discharged to the outside of the system and the fluid temperature rises in the drain valve portion 5, the bimetal disk 14 deforms and becomes flat, and the valve port 11 is opened. After that, as a normal steam-water separator, when water droplets flow in, they are separated in the separation unit 4, and only the vapor flows down to the secondary side through the valve port 11.

In the present embodiment, the bimetal is used as the temperature responsive member, but it goes without saying that a shape memory alloy, a thermowax, a bellows or the like can be used.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the steam-water separator for steam piping according to the present invention. 1: Inlet, 2: Outlet 3: Upper body, 4: Separation part 5: Drainage valve part, 6: Main body 8: Swirling blade, 9: Drainer tube 10: Partition wall, 11: Valve opening 12: Valve seat member, 13 : Valve element 14: Temperature responsive member, 20: Drain valve chamber 21: Float, 22: Drain valve seat 23: Drain port, 24: Drain valve port

Claims (1)

[Scope of utility model registration request] 1. A steam separator comprising an upper space communicating with an inlet and an outlet, wherein a separating section for separating steam and water by centrifugal force by swirling is provided, and a drain valve section is arranged in the lower space, between the separating section and the outlet. A water / water separator in which a valve seat member is arranged to divide the valve seat member, and a valve body facing the valve seat member and connected to the temperature responsive member is arranged.