JP2000205494A - Ball valve furnished with steam trap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ball valve furnished with a steam trap capable of performing non only a stream trap function but also a temperature control valve function. SOLUTION: A ball valve element 2 opening a T shaped flowing passage 6 is arranged in a casing 1 forming an inlet 4 and an outlet 5 in the rectangular direction free to rotate, a first temperature reactive element 3 is arranged on the opening side of one side of a long passage 11 facing against a first valve hole 14 formed on the one side of the long passage 11 of the T shaped flowing passage 6, and a second temperature reactive element 18 is arranged at the opening side of the other side of the long passage 11 facing against a second valve hole 21 formed on the other side of the long passage 11 of the T shaped flowing passage 6. A normal steam trap function is performed by the first temperature reactive element 3 by connecting the one side of the long passage 11 to the inlet 4 by rotating the ball valve element 2 and connecting a short passage 17 of the T shaped flowing passage to the outlet 5. A temperature control valve function is performed by the second temperature reactive element 18 by connecting the short passage 17 to the inlet 4 by rotating the ball valve element 2 and connecting the other side of the long passage 11 to the outlet 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steam trap for discharging condensed water as condensed water of steam generated in a steam-using device or a steam pipe, and more particularly to a ball valve for a ball valve. The present invention relates to a device having a steam trap in the body.

[0002]

2. Description of the Related Art A ball provided with a conventional steam trap.
For example, Japanese Unexamined Utility Model Publication No. 7-38897 discloses a valve. This is a disk type steam trap mounted inside a rotatable ball valve.
By rotating the ball valve, a function as a steam trap that discharges normal condensate water, a blow function that discharges initial air and low-temperature water by connecting the inlet and outlet, and Each of the flow path blocking functions for blocking the outlet can be appropriately selected.

[0003]

SUMMARY OF THE INVENTION In the above prior art,
Although it can function as a steam trap that discharges condensate generated by the condensation of steam, it only discharges condensate below a predetermined temperature and does not discharge condensate above a predetermined temperature. There was a problem that the function as a so-called temperature control valve could not be achieved. As a use of the steam trap, there are a case where condensed condensate must be discharged and a case where only condensate having a predetermined temperature or less has to be discharged. It cannot be used in applications where only condensate must be discharged.

[0004] Therefore, the technical problem of the present invention is to provide a steam trap capable of not only functioning as a steam trap but also functioning as a so-called temperature control valve and capable of discharging condensate below a predetermined temperature. The purpose of the present invention is to provide a ball valve provided with a ball valve.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned technical problems, the technical means of the present invention has a T-shaped flow passage in a casing having an inlet and an outlet formed at right angles. A ball valve element is rotatably disposed, and a first temperature responsive element is provided at an opening side of one side of the long passage opposite to a first valve hole formed at one side of the long passage of the T-shaped flow passage. A steam trap, wherein a second temperature responsive element is disposed on the other opening side of the long passage facing the second valve hole formed on the other side of the long passage of the T-shaped flow passage. The ball valve is provided with

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Normally, a ball valve is rotated at a position where one side of a long passage of a T-shaped flow passage is connected to an inlet and a short passage of the T-shaped flow passage is connected to an outlet. In use, the inlet and the outlet are connected via a first temperature responsive element. In this case, when the condensate flows down from the inlet, the first temperature responsive element opens the first valve hole to discharge the condensate to the outlet, and when the steam flows down from the inlet, the first temperature responsive element. Closes the first valve hole to prevent the steam from flowing down to the outlet, so that it can function as a normal steam trap.

In order to function as a so-called temperature control valve for discharging only condensate below a predetermined temperature, the ball valve is turned to connect the short passage of the T-shaped flow passage to the inlet and to form a T-shaped flow passage. By connecting the other side of the long path to the outlet, the inlet and the outlet are connected via the second temperature-responsive element. In this case, when the condensate temperature on the inlet side drops below the predetermined temperature, the second temperature responsive element opens the second valve hole, and discharges only condensate below the predetermined temperature to the outlet, and condenses on the inlet side. When the temperature rises above the predetermined temperature, the second temperature responsive element closes the second valve hole to prevent the condensate having the predetermined temperature or more from flowing down to the outlet, so that it can function as a temperature control valve. In addition,
By turning the valve body to block the inlet or outlet with the ball valve body, a flow path blocking function of blocking the inlet and outlet can be achieved.

[0008]

EXAMPLES Specific examples of the present invention will be described. In FIG. 1, a casing 1, a ball valve body 2, a first temperature responsive element 3 and a second temperature responsive element 18 form a ball valve provided with a steam trap.

An inlet 4 and an outlet 5 are provided in the casing 1, and a spherical ball valve body 2 is rotatably arranged inside the casing 1. The outlet 5 is formed at right angles to the inlet 4. The ball valve body 2 has a T-shaped flow passage 6 along the central axis. Ring-shaped valve seats 7, 8, 9, and 10 are interposed between the casing 1 and the ball valve body 2 to maintain airtightness.

The long passage 1 of the T-shaped flow passage 6 of the ball valve body 2
A partition member 13 is fixed to one side of the ball valve body 2 with a retaining ring 12 and a trap valve seat 15 having a first valve hole 14 is screwed and attached to the partition member 13. A first opening is provided on one opening side of the long passage 11 facing the first valve hole 14.
The temperature responsive element 3 is arranged. Although not shown, the first temperature responsive element 3 is formed of a substantially disk-shaped closed body capsule filled with a thin film diaphragm and a thermal expansion / contraction liquid, and is fixed at a predetermined position with respect to the trap valve seat 15 by a holding member 16. To hold.

Long passage 1 of T-shaped flow passage 6 of ball valve body 2
A partition member 19 is fixedly attached to the ball valve body 2 with a retaining ring 20 on the other side of the first member 1, and a trap valve seat 22 having a second valve hole 21 is screwed and attached to the partition member 19. A second inner side of the long passage 11 is opposed to the second valve hole 21.
The temperature responsive element 18 is arranged. Second temperature responsive element 18
Like the first temperature-responsive element 3, although not shown, it is composed of a substantially disk-shaped closed body capsule filled with a thin film diaphragm and a thermal expansion / contraction liquid, and a holding member is provided for the trap valve seat 22. At 23, it is held at a fixed position. As the temperature responsive elements 3 and 18, conventionally known elements such as bimetals and shape memory alloys can be used in addition to the elements using the sealed capsule as in this embodiment.

In the state shown in FIG. 1, one side of the long passage 11 of the T-shaped flow passage 6 to which the first temperature-responsive element 3 is attached is connected to the inlet 4 and the short passage of the T-shaped flow passage 6 is formed. Reference numeral 17 denotes a state connected to the outlet 5, which functions as a normal steam trap. That is, when a low-temperature condensate flows down from the inlet 4 around the first temperature-responsive element 3, the built-in thermal expansion / contraction liquid shrinks to open the first valve hole 14 so that the condensate exits. 5, when the high-temperature steam flows down, the thermal expansion and contraction liquid expands and closes the first valve hole 14, thereby preventing the steam from flowing down to the outlet 5.

When functioning as a so-called temperature control valve for discharging only condensate below a predetermined temperature, the ball valve body 2 is turned 90 degrees clockwise from a state shown in FIG. By rotation, the short passage 17 of the T-shaped flow passage 6 is connected to the inlet 4, and the other side of the long passage of the T-shaped flow passage 6 on which the second temperature-responsive element 18 is mounted is connected to the outlet 5. To a state where In this case, when the condensate temperature on the inlet 4 side drops below the predetermined temperature, the second temperature responsive element 18 opens the second valve hole 21 and discharges only the condensate below the predetermined temperature to the outlet 5, When the condensate temperature on the fourth side rises above the predetermined temperature, the second temperature responsive element 18 closes the second valve hole 21 to prevent the condensate having the predetermined temperature or more from flowing down to the outlet 5.

In addition, from the state shown in FIG.
By rotating the ball valve body 2 by 180 degrees in the counterclockwise direction by 90 degrees, or by rotating the ball valve body 2 by 180 degrees.
The inlet 4 or the outlet 5 is blocked by the ball valve 2. As a result, a channel blocking function is achieved.

[0015]

As described above, the ball valve provided with the steam trap of the present invention is a ball valve having a T-shaped flow passage in a casing having an inlet and an outlet formed at right angles to each other. A first temperature responsive element disposed at an opening side of one side of the long passage facing the first valve hole formed at one side of the long passage of the T-shaped flow passage; A second valve hole formed on the other side of the long passage facing the second valve hole formed on the other side of the long passage of the U-shaped flow passage.
Since the temperature responsive element is arranged, not only the steam trap function by the first temperature responsive element but also the temperature control function by the second temperature responsive element by rotating the valve ball is excellent. Produces an effect.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of a ball valve provided with a steam trap of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 casing 2 ball valve element 3 first temperature responsive element 4 inlet 5 outlet 6 T-shaped flow path 11 long T-shaped flow path 14 first valve hole 15 trap valve seat 17 T-shaped flow Short passageway 18 Second temperature-responsive element 21 Second valve hole 22 Trap valve seat

Claims (1)

[Claims] A ball valve having a T-shaped flow passage is rotatably disposed in a casing having an inlet and an outlet formed in a direction perpendicular to one side of a long passage of the T-shaped flow passage. A first temperature-responsive element is disposed on one opening side of the long passage facing the first valve hole formed on the other side, and a second temperature-responsive element is formed on the other side of the long passage of the T-shaped flow passage.
A ball valve provided with a steam trap, wherein a second temperature responsive element is disposed on the other opening side of the long passage facing the valve hole.