JPH08145289A - Steam trap of disc - Google Patents

Abstract

PURPOSE: To discharge a large volume of condensate. CONSTITUTION: A cover 2 is fixed to a main body 1 having an inlet and an outlet 5 to form a variable pressure chamber therein. A disc-like valve disc 11 is arranged in the chamber 3. A second valve body 13 is formed in a jetting hole 6 intergratedly therewith at a lower part of the disc 11. In a face-to-face relation with the body 13 a second valve seat 15 is formed to communicate with the outlet 5 through a communication hole 16. On the way of the hole 16 a changeable body 17 having a T-shaped open pass 18 is arranged to turn freely. An auxiliary communication hole 21 for communicating the body 17 with the inlet 4 is formed in the main body 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention uses a valve disk that opens and closes in response to changes in pressure in a variable pressure chamber, that is, a thermodynamic steam chamber, to automatically condense water generated in various steam-using devices and steam pipes. The present invention relates to a disc type steam trap that discharges a large amount of condensate, and particularly relates to a disc type steam trap that can discharge a large amount of condensed water.

[0002]

2. Description of the Related Art The basic structure of a disk type steam trap is that a cover is fixed to a main body having an inlet and an outlet to form a variable pressure chamber inside, and an injection hole is formed at the center of the variable pressure chamber to form an inlet. An annular groove that communicates with the variable pressure chamber and opens to the outer periphery of the ejection hole, forms an inner ring valve seat between the ejection hole and the annular groove, and an outer ring valve seat on the outer periphery of the annular groove. A flat disk-shaped valve disc, which has a discharge hole, communicates with the outlet through the annular groove and the discharge hole to the outlet, and is seated on and off the valve seat surface consisting of the inner ring valve seat and the outer ring valve seat, is arranged in the variable pressure chamber. Is something
The valve disk automatically separates from and sits on the valve seat surface according to the pressure change in the variable pressure chamber, that is, the thermodynamic steam chamber, and automatically discharges the condensate.

[0003]

In the above-mentioned conventional disc type steam trap, since the annular groove and the outlet communicate with each other through the discharge hole smaller than the passage cross-sectional area of the annular groove, the flow passage is narrowed. Its discharge capacity is small and it is not suitable for discharging a large amount of condensate.

SUMMARY OF THE INVENTION Therefore, a technical object of the present invention is to provide a disk type steam trap for a large amount capable of discharging a large amount of condensed water.

[0005]

Means for Solving the Problems The technical means of the present invention taken to solve the above technical problems is to form a transformer chamber by fixing a lid to a main body having an inlet and an outlet, An ejection hole is provided at the center of the variable pressure chamber to connect the inlet and the variable pressure chamber, an annular groove is provided at the outer periphery of the ejection hole, and a discharge hole is provided to communicate the annular groove and the outlet. A disc-shaped valve that forms an inner ring valve seat between the inner ring valve and the annular groove, forms an outer ring valve seat on the outer periphery of the annular groove, and seats on and off the valve seat surface composed of the inner ring valve seat and the outer ring valve seat. In the one in which the disc is arranged in the variable pressure chamber, a second valve body is continuously provided below the valve disc, and a second valve seat is formed in the ejection hole so as to face the second valve body, and the second valve is formed. The seat is communicated with the outlet through the communication hole, a switching valve body having a T-shaped open circuit is arranged in the communication hole, and the switching is performed. The body and the inlet is provided with a Fukuren hole communicating.

[0006]

The operation of the above technical means is as follows.
By providing a discharge hole that communicates the annular groove with the outlet, and forming a second valve seat in the ejection hole to communicate with the outlet,
When the valve disc opens, the valve seat surface composed of the inner ring valve seat and the outer ring valve seat and the second valve seat simultaneously open, and a large amount of condensed water is discharged from the openings of both to the outlet. When condensate is discharged and steam comes in, the valve disc closes by itself,
The valve seat surface composed of the inner ring valve seat and the outer ring valve seat and the second valve seat surface are closed at the same time to prevent the discharge of steam.

By arranging a switching valve body having a T-shaped opening in the communication hole and communicating with the inlet through the sub-communication hole,
The switching valve body can be switched to connect the inlet and the outlet, and not only when the valve disc is opened, but also when the valve disc is closed, the trap inlet and outlet are communicated with each other. Water, initial stagnant air, etc. can be discharged.

[0008]

EXAMPLE An example showing a concrete example of the above technical means will be described (see FIG. 1). The lid 2 is screwed to the main body 1 to form the transformer chamber 3 inside. The inlet 4 and the outlet 5 are formed in the main body 1 on substantially the same axis. The main body 1 is provided with an ejection hole 6 opening at the center of the variable pressure chamber 3, and the inlet 4 and the variable pressure chamber 3 are communicated with each other through the ejection hole 6. An annular groove 8 is provided on the outer periphery of the ejection hole 6,
An annular inner ring valve seat 9 is formed between the ejection hole 6 and the annular groove 8,
An annular outer ring valve seat 10 is formed around the outer periphery of the annular groove 8. The inner ring valve seat 9 and the outer ring valve seat 10 are concentric and are formed on the same plane. The end of the annular groove 8 communicates with the outlet 5 via the discharge hole 7.

A disk-shaped valve disk 11 for seating on and off the valve seat surfaces on the upper surfaces of the inner ring valve seat 9 and the outer ring valve seat 10 to open and close is disposed in the variable pressure chamber 3 in a free state. A rod portion 12 is integrally provided on the lower portion of the valve disc 11, and a spherical second valve body 1 is provided at an end portion thereof.
Attach 3. A second valve seat 15 is formed in the ejection hole 6 at a position facing the lower end of the second valve body 13. Second
The valve seat 15 is opened and closed by the vertical movement of the second valve body 13.
The second valve seat communicates with the outlet 5 via the communication hole 16.

A spherical switching valve body 17 is rotatably arranged in the middle of the communication hole 16. The switching valve body 17 is a T-shaped open circuit 18
Although not shown, it is assumed that the rotating operation can be performed from the outside of the main body 1. The state shown in FIG. 1 is a state in which the communication hole 16 and the outlet 5 are communicated with each other. Valve seat rings 19 and 20 made of synthetic resin are arranged on the outer periphery of the switching valve body 17 so that the switching valve body 17 can slide in an airtight manner.

A sub-communication hole 21 for communicating the switching valve body 17 and the inlet 4 is formed in the main body 1. By rotating the switching valve body 17 in a clockwise direction from the state shown in FIG. 1 by 90 degrees from the state shown in FIG. 1, the inlet 4 and the outlet 5 can be communicated with each other via the auxiliary communication hole 21. Further rotation by 90 degrees causes the communication hole 16 and the sub-communication hole 21 to communicate with each other, and further rotation by 90 degrees causes the communication hole 16 and the outlet 5 and the sub-communication hole 21 and the outlet 5 to communicate with each other.

Next, the operation will be described. In the state shown in FIG. 1, when the steam does not stay in the variable pressure chamber 3, the fluid pressure on the inlet 4 side acting on the valve disc 11 through the ejection hole 6 causes the valve disc 11 to move the inner and outer ring valve seats 9, The low temperature condensate is discharged from the outlet 10 through the annular groove 8 and the discharge hole 7 to the outlet 5. When the valve disc 11 opens, the second valve body 13 provided at the lower part of the valve disc 11 also rises, so that the second valve seat 15
A large amount of condensed water is quickly discharged by discharging the condensed water through the communication hole 16 and the switching valve body 17 by opening.

When the condensate is discharged and steam flows into the variable pressure chamber 3, the pressure inside the variable pressure chamber 3 rises, and at the same time, high-speed steam flows down the lower surface of the valve disk 11 to lower the static pressure. As a result, the valve disc 11 is provided with the inner and outer ring valve seats 9, 10
And the second valve body 13 is also simultaneously seated on the second valve seat 15 to close the communication passage 16. When the steam in the variable pressure chamber 3 is condensed due to heat radiation or the like and the steam pressure is reduced, the valve disk 11 is opened again, and such an on-off valve cycle is repeated.

By rotating the switching valve body 17 by rotating it 90 degrees clockwise from the state shown in FIG.
And the outlet 5 are communicated with each other through the sub-communication hole 21 and the T-shaped open passage 18 of the switching valve body 17, and the condensate at the inlet 4 is discharged through the valve disc 1.
Even when 1 is seated and the valve is closed, it can be forcibly discharged.

[0015]

As described above, according to the present invention, since the condensate flow passage can be flowed down to the outlet without being restricted, even when used in a place where a large amount of condensate is generated, the condensate does not stay and quickly. Can be discharged. Therefore, there is no danger of causing a water hammer phenomenon due to the accumulation of condensed water, and it is possible to prevent the steam-using device from being damaged by the water hammer phenomenon.

Since the rod-shaped second valve body 13 is continuously provided on the valve disc 11, the second valve body 13 is guided by the ejection holes 6 to prevent excessive displacement of the valve disc 11 and wear of the valve disc 11. And deformation can be prevented.

The switching valve body 17 can be rotated to forcibly communicate the inlet 4 and the outlet 5, and even when the valve disk 11 is seated and closed, condensate, air, Foreign matter such as dust can be removed to the outlet 5 side.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of a disk type steam trap of the present invention.

[Explanation of symbols]

 1 Main body 2 Lid body 3 Transformer chamber 4 Inlet 5 Outlet 6 Jet hole 7 Discharge hole 8 Annular groove 9 Inner ring valve seat 10 Outer ring valve seat 11 Valve disc 12 Rod part 13 Second valve body 15 Second valve seat 16 Communication hole 17 Switching Valve body 21 Secondary communication hole

Claims (1)

[Claims] 1. A cover body is fixed to a main body having an inlet and an outlet to form a variable pressure chamber inside, and an injection hole opening at the center of the variable pressure chamber is provided to communicate the inlet and the variable pressure chamber, and the outside of the injection hole. An annular groove that opens to the periphery is provided, a discharge hole that communicates the annular groove with the outlet is provided, an inner ring valve seat is formed between the ejection hole and the annular groove, and an outer ring valve seat is provided on the outer periphery of the annular groove. In the one in which the disk-shaped valve disc that is formed and is seated on and away from the valve seat surface composed of the inner ring valve seat and the outer ring valve seat is arranged in the variable pressure chamber, the second valve body is continuously provided under the valve disc, A second valve seat is formed in the ejection hole to face the second valve body, the second valve seat is communicated with the outlet through the communication hole, and the communication hole has a T-shaped open path. A disc-type steam tray characterized in that a switching valve body is arranged and a sub-communication hole that communicates the switching valve body with the inlet is provided. Up.