JPH0663793B2 - Condensate measurement device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a condensate amount measuring device for measuring the amount of condensate flowing in a steam pipe such as a steam transport pipe and a condensate pipe for condensing steam generated in steam-using equipment. Regarding

If you measure the amount of condensate flowing through the steam pipe, you can know the amount of steam consumed by the steam-using device, and you can obtain data that improves the heating efficiency of the steam-using device. This is extremely important.

2. Description of the Related Art A conventional condensate measuring device will be described with reference to JP-B-60-54610. This is because the casing forms the measurement chamber, the inlet for introducing the fluid into the upper part of the measuring chamber, and the outlet for leading out the fluid in the lower part of the measuring chamber.The measuring chamber and the outlet communicate with each other through the valve port. The outlet side and the outlet side are connected by a pressure equalizing passage, a float valve that correlates the position of the float and the valve opening is placed in the measurement chamber, and a valve means such as a steam trap is placed downstream of the outlet. However, the water level in the measurement room is detected.

Therefore, since the float position and the valve opening are correlated, the amount of condensed water can be measured by detecting the water level in the measurement chamber.

In this case, if the pressure difference before and after the valve opening is different even at the same water level, the amount of condensed water passing through the valve opening is different, so it is necessary to keep the pressure difference before and after the valve opening constant. is there. The problem is solved by providing a pressure equalizing passage and a valve means such as a steam trap.
The structure is complicated accordingly.

Therefore, the technical problem of the present invention is to make it possible to accurately measure the amount of condensed water with a simple structure.

Means for Solving the Problems The technical means of the present invention taken to solve the above technical problems include a measurement chamber in a casing, an inlet for introducing a fluid into the upper portion of the measurement chamber, and a lower portion of the measurement chamber. Forming an outlet for drawing out fluid, connecting the measurement chamber and the outlet through the valve port, and extending the other end of the lever with the valve body that opens and closes the valve port at one end to the upper part of the measuring chamber, A float is arranged, a lever is operated by floating and descending the float to open and close the valve port, and the flow velocity of ascites passing through the lower portion of the measurement chamber is measured.

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

Condensate at the inlet enters the measurement room and collects up to the float water line located above the measurement room. When the water level rises above that level, the float floats and the valve body opens the valve opening via the lever, and the condensate flows away to the outlet. When the water level drops due to the discharge of condensed water, the float drops and the valve body closes the valve opening. By opening the valve opening due to floatation of the float, the condensed water that has accumulated in the lower part of the measurement chamber flows from the valve opening to the outlet. Since the flow velocity of the condensate that passes through the lower part of the measurement chamber is measured, an accurate condensate flow rate can be measured regardless of the pressure on the outlet side.
Therefore, there is no need for means for keeping the pressure difference before and after the valve opening, that is, the pressure difference between the measurement chamber and the outlet constant, and the structure is simplified.

EFFECTS OF THE INVENTION The present invention produces the following unique effects.

As described above, according to the present invention, valve means such as a pressure equalizing passage and a steam trap are unnecessary, so that the structure is simple and the manufacturing cost can be reduced.

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

It is attached to the main body 1 with a lid 2 bolt (not shown) to form a casing having a measurement chamber 3 inside. Body 1 and lid 2
A gasket 4 is interposed between them to keep the both airtight.

An inlet 5 and an outlet 6 are formed in the body 1. Inlet 5 is measurement room 3
Is connected to a steam-using device (not shown) or the like to introduce condensed water into the measurement chamber 3. A valve seat member 7 is screwed to the lower portion of the measurement chamber 3, the measurement chamber 3 and the outlet 6 are communicated with each other through a valve port 8 formed by the valve seat member 7, and the measurement chamber 3 guides condensed water to the outlet 3.

Attach the lever 9 to the main body 1 with the pin 10. The lever 9 can rotate about the pin 10 as a fulcrum. The valve body 11 is attached to one end of the lever 9.
Is attached so that the valve body 8 can be opened and closed. Lever 9
The other end of is extended to the upper part of the measurement chamber 3.

A hollow spherical float 12 made of a stainless steel thin plate is accommodated in the measurement chamber 3 in a free state. The float 12 floats on the condensate that collects in the measurement chamber and ascends and descends with the water surface. When the float 12 floats, the lever 9 is rotated clockwise, and the valve body is rotated.
11 opens the valve opening 8. Condensate in the measuring chamber 3 flows out to the outlet 6. When the water level decreases due to the outflow of condensed water and the float 12 descends, the lever 9 rotates counterclockwise, the valve body 11 closes the valve port 8, and the outflow of condensed water is stopped. Note that reference numeral 13 is a float seat that defines the descending position of the float.

A pair of ultrasonic wave transmitters / receivers 14a, 14b are attached to the lower part of the main body 1 so as to be diagonally opposed to the axis of the measurement chamber 3. The transceivers 14a and 14b are illustrated on the left and right for convenience, but in reality,
Place on the front side and the side opposite the page.

The inner diameter of the measurement chamber 3 is D, the distance between the transducers 14a and 14b is L,
Let the angle between the line connecting the transducers 14a and 14b and the axis of the measuring chamber 3 be V, the flow velocity of the condensate flowing in the measuring chamber 3 and C be the propagation velocity of ultrasonic waves in the condensate. For example, the transceiver 14
The time t1 required for the ultrasonic pulse transmitted from a to be received by the transducer 14b is Becomes Conversely, the time t2 required for the ultrasonic pulse transmitted from the transducer 14b to be received by the transducer 14a.
Is Becomes From equations (1) and (2), the flow velocity V is Becomes The flow rate can be measured from the flow velocity V and the inner diameter D of the measurement chamber 3.

Although the ultrasonic type flow rate measuring means is used in the above embodiment, the present invention is not limited to this, and an electromagnetic type flow rate measuring means or the like may be used.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view of an apparatus for measuring the amount of condensed water according to an embodiment of the present invention. 1: Main body, 2: Lid 3: Measuring chamber, 5: Inlet 6: Outlet, 8: Valve opening 9: Lever, 11: Valve body 12: Float 14a ・ 14b: Ultrasonic transducer

Claims (1)

[Claims] 1. A casing is provided with a measuring chamber, an inlet for introducing a fluid into the upper portion of the measuring chamber, and an outlet for leading out the fluid in the lower portion of the measuring chamber. The measuring chamber and the outlet are communicated through a valve opening, and a valve is provided. The valve that opens and closes the mouth is attached to one end, and the other end of the lever is extended to the upper part of the measurement chamber, and the float is placed above the measurement chamber. The condensate amount measuring device is configured to measure the flow velocity of the condensate passing through the lower part of the measuring chamber.