JPH11304094A - Steam leakage quantity measuring device for bucket type steam trap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To precisely measure steam leakage quantity of a bucket type steam trap. SOLUTION: A probe 1 in which a vibration detection means is built and a device main body 2 to process a detected vibration signal of the probe 1 are furnished, and the device main body 2 has a CPU 6 and a memory part 7. The memory part 7 previously memorizes relation of a working cycle of a bucket type steam trap and steam leakage quantity and relation of working cycle for each discharged condensate quantity and steam leakage quantity. The CPU 6 detects a working cycle of working frequency, etc., in working time and specified time of the bucket type steam trap from a supplied vibration signal, computes discharged condensate quantity from the relation of the working cycle previously memorized in the memory part 7 and the discharged condensate quantity with this detected working cycle and computes steam leakage quantity from the relation of a working cycle for each of the discharged condensate quantity previously memorized in the memory part 7 and the steam leakage quantity with this computed discharged condensate quantity and the detected working cycle.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for measuring the amount of steam leakage of a bucket type steam trap which is attached to a steam transport pipe or a steam-using device and which automatically discharges condensate without leaking steam. The present invention relates to an apparatus for measuring the amount of steam leakage from an operation cycle of a mold steam trap.

[0002]

2. Description of the Related Art If the valve closing function of a steam trap is reduced and steam is leaked, expensive energy is wasted, and the operation state of the steam trap has conventionally been confirmed. Therefore, various devices for that purpose have been developed. One of them is disclosed in Japanese Utility Model Publication No. 6-018140. The operation detector of the bucket type steam trap shown here detects the intensity of the vibration accompanying the opening / closing operation of the bucket type steam trap, and discharges the condensed water normally beforehand measured. The presence or absence of steam leakage is detected by comparing the intensity of the vibration that is sometimes generated.

[0003]

SUMMARY OF THE INVENTION In the above prior art,
There was a problem that the steam leak amount of the bucket type steam trap could not be measured accurately. That is, bucket type steel
The mud trap opens by releasing steam from the vent holes opened in the bucket, so that steam leaks even when the on-off valve is normally operated.

Accordingly, it is an object of the present invention to provide an apparatus capable of accurately measuring the amount of steam leakage from a bucket type steam trap.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned technical problems, an apparatus for measuring the amount of steam leakage of a bucket type steam trap according to the present invention detects an operation cycle of the bucket type steam trap. Means, storage means for preliminarily storing the relationship between the operation cycle of the bucket type steam trap and the discharge condensate amount, and the relation between the operation cycle for each discharge condensate amount and the steam leakage amount, and storing the detected operation cycle. The discharge condensate amount is calculated from the relationship between the set operation cycle and the discharge condensate amount, and the calculated discharge condensate amount, the detected operation cycle and the stored operation cycle for each discharge condensate amount and the steam leakage amount are calculated. Computing means for calculating the amount of steam leakage from the relationship.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The operation cycle of a bucket type steam trap, that is, the operation time of a valve opening, closing, or opening / closing valve, or the number of times of operation of the valve opening, closing, or opening / closing valve in a predetermined time, and discharge recovery The amount of water has a correlation, and the longer the operation time is, the larger the discharged condensate amount is, and the more the number of times of operation is, the smaller the discharged condensate amount is. Therefore, by storing in advance the relationship between the operation cycle of the bucket type steam trap and the discharge condensate amount, the discharge condensate amount can be calculated from the detected operation cycle.

There is a correlation between the operation cycle of the bucket type steam trap and the amount of steam leakage. The longer the operation time, the smaller the amount of steam leakage, and the greater the number of times of operation, the greater the amount of steam leakage. Further, even in the same operation cycle, the larger the amount of discharged condensate, the larger the amount of steam leakage. Therefore, by storing in advance the relationship between the operation cycle and the amount of steam leakage for each discharge condensate amount of the bucket type steam trap, it is possible to calculate the steam leakage amount from the detected operation cycle and the calculated discharge condensate amount. it can.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment showing a specific example of the above technical means will be described (see FIGS. 1 to 3). FIG. 1 is a block diagram showing a schematic configuration of a steam leak amount measuring device of a bucket type steam trap according to the present invention. The steam leak detecting device detects vibration of a bucket type steam trap (not shown). And a main body 2 for processing the vibration signal detected by the probe 1.

The apparatus main body 2 amplifies the detected vibration signal supplied from the probe 1 via the dedicated cable 3 by the signal amplifier 4 and digitizes the amplified signal by the A / D converter 5. Is input to the CPU 6.

The CPU 6 processes the vibration signal input from the A / D converter 5 in accordance with the processing program stored in the storage unit 7, and thereby determines the amount of steam leakage and the amount of condensate discharged from the bucket type steam trap. calculate. Then, the calculation result is displayed on the display unit 8.

The storage unit 7 stores a processing program, a relationship between an operation cycle of an opening / closing valve of a bucket type steam trap as shown in FIG. 2 and an amount of discharged condensate, for example, as shown in FIG. The relationship between the operation cycle of the on-off valve and the amount of steam leakage for each discharge condensate amount of the bucket type steam trap is stored. In FIG. 2, the vertical axis represents the operation cycle of the on-off valve, that is, the operation time or the number of times of operation, and the horizontal axis represents the discharge condensate amount. Also, in FIG. 3, the vertical axis is the amount of steam leakage, the horizontal axis is the operation cycle of the on-off valve,
That is, the operation time or the number of operations,
2 and Q3 are discharge condensate amounts respectively (Q1>Q2> Q
3).

As shown in FIG. 2, the operation cycle and the discharge condensate of the open / close valve of the bucket type steam trap are such that the longer the operation time, the larger the discharge condensate, and the larger the number of operations, the smaller the discharge condensate. Have a relationship. Similarly, the operation cycle of opening or closing the valve and the condensate discharge amount are related such that the longer the operation time is, the larger the discharge condensate amount is, and the more the number of operations is, the smaller the discharge condensate amount is.

Also, as shown in FIG.
Condensate discharge volume Q1, Q2, Q3 (Q1> Q
2> Regarding the operation cycle of the on-off valve and the steam leakage amount for each Q3), the longer the operation time, the smaller the steam leakage amount.
There is a relationship that as the number of operations increases, the amount of steam leakage increases. Similarly, the operation cycle of valve opening or valve closing for each discharge condensate amount and the amount of steam leakage are similar.The longer the operation time, the smaller the amount of steam leakage, and the more the number of operations, the greater the amount of steam leakage, and the same operation Even in a cycle, the larger the amount of discharged condensate, the greater the amount of steam leakage.

Next, the operation of the CPU 6 will be described. The probe 1 is pressed against the bucket-type steam trap or a pipe near the same, and the vibration accompanying the opening / closing operation of the bucket-type steam trap is detected. The detected vibration signal is transmitted through the signal amplifier 4 and the A / D converter 5 to C
It is supplied to PU6.

The CPU 6 detects an operating cycle such as the operating time of the open / close valve of the bucket type steam trap or the number of times the open / close valve is operated in a predetermined time from the supplied vibration signal,
The discharge condensate amount is calculated from the detected operation cycle, the relationship between the operation cycle of the open / close valve of the bucket type steam trap and the discharge condensate amount stored in advance in the storage unit 7, and the calculated condensate discharge amount and the detected condensate discharge amount. The amount of steam leakage is calculated from the relationship between the operating cycle thus determined, the operation cycle of the on-off valve for each discharge condensate amount of the bucket type steam trap stored in the storage unit 7 in advance, and the amount of steam leakage. The amount is displayed on the display unit 8.

Probe 1 and CPU in the above embodiment
Reference numeral 6 corresponds to the operation cycle detecting means described in the claims. The storage unit 7 corresponds to a storage unit described in the claims. Further, the CPU 6 corresponds to the calculating means described in the claims.

In the above-described embodiment, a probe having a built-in vibration detecting means has been exemplified as the operation cycle detecting means. However, instead of the vibration detecting means, for example, means for detecting sound or ultrasonic waves may be used, or pressure may be used. Detecting means or flow rate detecting means may be used. Further, these detecting means may be incorporated in a bucket type steam trap or a pipe in the vicinity thereof.

[0018]

As described above, the apparatus for measuring the amount of steam leakage of the bucket type steam trap according to the present invention detects the operation cycle of the bucket type steam trap and stores the detected operation cycle in advance. Bucket type steel
The amount of discharged condensate is calculated from the relationship between the operation cycle of the water trap and the amount of discharged condensate. By calculating the steam leak amount from the relationship between the cycle and the steam leak amount, an excellent effect that an accurate steam leak amount can be calculated is obtained.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a schematic configuration of an apparatus for measuring the amount of steam leakage of a bucket type steam trap according to the present invention.

FIG. 2 is a diagram showing a relationship between an operation cycle and a discharge condensate amount stored in advance in a steam leak amount measuring device of a bucket type steam trap according to the present invention.

FIG. 3 is a diagram showing a relationship between an operation cycle for each discharge condensate amount and a discharge condensate amount stored in the steam leak amount measuring device of the bucket type steam trap according to the present invention in advance.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Probe (vibration detection means) 2 Device main body 4 Signal amplifier 5 A / D converter 6 CPU 7 Storage unit 8 Display unit

Claims (1)

[Claims] An operation cycle detecting means for detecting an operation cycle of a bucket type steam trap, a relation between an operation cycle of the bucket type steam trap and a discharge condensate amount, an operation cycle for each discharge condensate amount and a steam leakage amount. A storage means for storing the relationship in advance, and a discharge condensate amount is calculated from a relationship between the detected operation cycle, the stored operation cycle, and the discharge condensate amount, and the calculated discharge condensate amount and the detected operation cycle are calculated. And a calculating means for calculating the amount of steam leakage from the relationship between the stored operating cycle for each discharge condensate amount and the amount of steam leakage, and a device for measuring the amount of steam leakage of a bucket-type steam trap. .