JPH0280921A - Apparatus for measuring amount of condensate - Google Patents

Abstract

PURPOSE:To simplify a structure by dispensing with a valve means and to measure the flow velocity of condensate passing through the lower part of a measuring chamber by operating a lever by the floating and falling of a float to open and close a valve port. CONSTITUTION:Condensate enters a measuring chamber 3 from an inlet 5 to be stored therein up to the draft line of the float 12 arranged to the upper part of the measuring chamber 3. When a water level reaches said draft line or more, the flat 12 rises to open a valve port 8 by a valve body 11 through a lever 9 and condensate flows out of the measuring chamber 3 through an outlet 6. When the condensate level falls by the discharge of condensate, the float 12 falls and the valve port 8 is closed by the valve body 11. By the opening of the valve port 8 due to the floating of the float 12, the condensate stored in the lower part of the measuring chamber 3 flows to the outlet 6 from the valve port 8. Since the flow velocity of the condensate passing through the lower part of the measuring chamber 3 is measured, the accurate flow rate of the condensate can be measured regardless of the pressure on the outlet side. Therefore, a means for keeping pressure difference between the parts before and behind the valve port 8, that is, between the measuring chamber 3 and the outlet 6 constant becomes unnecessary and a structure becomes simple.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is used to derive condensate generated in steam transport pipes and steam-using equipment (condensate amount measurement that measures the amount of condensate flowing through steam pipes such as water pipes). Regarding equipment.

By measuring the amount of condensate flowing through the steam pipes, you can determine the amount of steam consumed by steam-using equipment, and you can obtain data to improve the heating efficiency of steam-using equipment. Measuring this accurately is essential for thermal management. This is extremely important.

BACKGROUND OF THE INVENTION A conventional condensate amount measuring device will be explained with reference to Japanese Patent Publication No. 60-54610. This consists of a measuring chamber and a casing.
An inlet for introducing fluid into the upper part of the measuring chamber and an outlet for leading out the fluid are formed at the lower part of the measuring chamber, the measuring chamber and the outlet are communicated through a valve port, and the upper part of the measuring chamber and the outlet side are connected by a pressure equalizing passage. A float valve with a correlation between the float position 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 to detect the water level in the measurement chamber. This is how it was done.

Therefore, since there is a correlation between the float position and the valve opening degree, the amount of condensate can be measured by detecting the water level in the measurement chamber.

Problems to be Solved by the Invention In this case, even if the water level is the same, if the pressure difference before and after the valve port is different, the amount of condensate passing through the valve port will be different, so it is necessary to keep the pressure difference before and after the valve port constant. be.

This problem has been solved by providing a pressure equalizing passage and a valve means such as a steam trap, but the valve structure is complicated.

Therefore, the technical problem of the present invention is to enable accurate measurement of the amount of condensate with a simple structure.

Means for Solving the Problems The technical means of the present invention taken to solve the above-mentioned technical problems is that the casing has a measuring chamber, an inlet for introducing fluid into the upper part of the measuring chamber, and an inlet in the lower part of the measuring chamber. A lever that forms an outlet for drawing out the fluid, communicates the measurement chamber and the outlet through a valve port, has a valve body attached to one end that opens and closes the valve port, and extends the other end of the lever to the top of the measurement chamber. A float is arranged and a lever is operated as the float rises and falls to open and close a valve port, thereby measuring the flow rate of condensate passing through the lower part of the measurement chamber.

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

The condensate at the inlet enters the measurement chamber and collects up to the water line of the float placed at the top of the measurement chamber. When the water level rises above this level, the float floats up, the valve body opens the valve port via the lever, and the condensate flows out to the outlet. When the water level drops due to discharge of condensate, the float descends and the valve body closes the valve port. When the valve opening is opened by the floating of the float, the condensate accumulated in the lower part of the measurement chamber flows from the valve opening to the outlet. Since the flow rate of condensate passing through the F section of this measurement chamber is measured, the condensate flow rate can be accurately measured regardless of the pressure on the outlet side.

Therefore, there is no need for a means to maintain a constant pressure difference between the front and back of the valve port, that is, between the measurement chamber and the outlet, and the structure is simplified.

Effect 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 not required, so the structure is simple and can be manufactured at low cost.

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

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

An inlet 5 and an outlet 6 are formed in the main body 1. Entrance 5 is measurement chamber 3
The condensate is introduced into the measuring chamber 3 by connecting to the upper part of the measuring chamber 3 and connecting to steam-using equipment (not shown).

A valve seat member 7 is screwed to the lower part of the measuring chamber 3, and the measuring chamber 3 and the outlet 6 are communicated through a valve port 8 formed by the valve seat member 7, so that the condensate in the measuring chamber 3 is guided to the outlet 3.

Attach lever 9 to main body 1 with pin 10. The lever 9 can rotate using the pin 10 as a fulcrum. A valve body 11 is attached to one end of the lever 9 so that the valve port 8 can be opened and closed. The other end of the lever 9 extends to the top of the measurement chamber 3.

A hollow spherical float 12 made of a thin stainless steel plate is accommodated in the measurement chamber 3 in a free state. The float 12 floats on the condensate accumulated in the measurement chamber and ascends and descends with the water surface. When the float 12 floats up, the lever 9 is rotated clockwise so that the valve body 11 listens to the valve port 8. The condensate in the measuring chamber 3 flows away to the outlet 6. The water level drops due to the outflow of condensate and float 12
When the lever 9 descends, the lever 9 rotates counterclockwise, the valve body 11 closes the valve port 8, and the outflow of condensate is stopped.

Note that reference number @13 is a float seat that determines the descending position of flows 1 to 1.

A pair of ultrasonic transducers 14a and 14b are attached to the lower part of the main body 1 so as to be obliquely opposed to each other with respect to the axis of the measurement chamber 3.

Although the transducers 14a and 14b are shown on the left and right sides for convenience, they are actually arranged on the front side and the opposite side of the page.

The inner diameter of the measurement chamber 3 is D, the distance between the transducers 14a and 14b is θ, and the angle between the line connecting the transducers 14a and 14b and the axis of the measurement chamber 3 is θ, and the flow inside the measurement chamber 3 is If the flow velocity of condensate is V and the propagation velocity of ultrasonic waves in this condensate is C, then the time t1 required for the ultrasonic pulse transmitted from the transducer 14a 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 6: Exit 9 Nile lever 12: Float 14a-14b 8: Valve port 11: Valve body: lf3 sound wave Transducer/receiver

Claims (1)

[Claims] 1. Form a measuring chamber in the casing, an inlet for introducing fluid into the upper part of the measuring chamber, and an outlet for leading out the fluid at the lower part of the measuring chamber, communicate the measuring chamber and the outlet through a valve port, and open and close the valve port. A lever with a valve body attached to one end extends to the top of the measurement chamber, a float is placed above the measurement chamber, and the lever is operated by the rise and fall of the float to open and close the valve port. A condensate amount measuring device that measures the flow rate of condensate passing through the lower part of the chamber.