JPH0735880B2 - Wireless remote operation determination device for steam trap - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation determination device for determining whether or not the operating state of a steam trap is good, and in particular, a steam trap that can be measured at a position distant from the steam trap to be determined. Wireless remote operation determination device.

The steam trap is attached to the steam line or equipment that uses steam, and the steam is automatically leaked only by condensate without leaking. When the steam trap discharges condensate or leaks steam, vibration is generated along with the flow of each fluid. The value of this vibration is different between the case where the steam trap discharges only the condensate and the case where the steam trap discharges the condensate together with the leaked steam.
Therefore, by detecting the vibration value of the steam trap, it is determined whether the steam trap is working properly, that is, whether only the condensate is discharged, or the steam leaks with the condensate. I know whether or not.

With the recent rise in fuel costs, steam leaks have become more and more closely monitored. Leaving steam as little as possible is a prerequisite for adopting a steam trap.
Even after being installed in the steam pipes, the steam traps that leak steam are repaired or actively replaced even after being closely monitored.

2. Description of the Related Art The applicant of the present application has developed a simple steam trap vapor leak amount detector.

One of them is disclosed in JP-A-62-212542. This is because the detector with a built-in vibration sensor and temperature sensor is pressed against the outer surface of the steam trap casing to detect the vibration and temperature associated with the operation of the steam trap, which are measured and stored in advance. The steam leak amount of the steam trap is detected from the correlation between the vibration using the pressure as a parameter and the steam leak amount. By incorporating a temperature sensor, the temperature of the outer surface of the steam trap can be measured, and the pressure of the steam flowing inside the steam trap is converted from this temperature,
It is possible to accurately measure the amount of steam leakage according to each pressure.

Problems to be Solved by the Invention In the above-mentioned conventional one, it is possible to determine the operation quality of each steam trap and measure the amount of steam leak, but up to the place where each steam trap is attached for measurement. The measurer has to move and directly press the detector against the steam trap for measurement, which requires a lot of labor and time.

In addition, when detecting the operating state of each steam trap, the model according to the operating principle of the steam trap,
The specified pressure indicating the pressure range in which the steam trap operates normally, and the code number according to the nominal diameter of the steam trap,
Alternatively, it is necessary to enter the measurement conditions such as an identification symbol for distinguishing each trap for each installed area, which is a manual work, which is very troublesome and requires a lot of labor and time. Was. In order to make the operation determination more accurately, the installation indicating the working pressure, which is the pressure when the steam trap is actually used, and whether it is installed in the steam line or the equipment using steam. It was necessary to input auxiliary conditions such as conditions, which required more labor.

Especially in a complex equipped with a large number of traps and various plants, the labor and time required for measurement were enormous.

Therefore, the technical problem of the present invention is to reduce the labor and time required to find the location where each steam trap is attached and move to that location, and to enter the measurement conditions and auxiliary conditions of the steam trap. The purpose is to make it simple and to perform measurement for determining the operation of the steam trap with extremely little labor and time.

Means for Solving the Problems The technical means of the present invention taken to solve the above technical problems are the temperature and the vibration associated with the operation of the steam trap, and the steam previously measured and stored. A steam trap operation determination device that determines the quality of the steam trap's operating state by calculating the steam leakage amount from the correlation between the vibration using pressure as a parameter and the steam leakage amount. Equipment
A transmitter having a transmission band corresponding to the steam trap in a one-to-one correspondence is attached to the steam trap directly or in the vicinity of the steam trap, so that the transmission device can measure the conditions necessary for measurement and the vibration signal of the measurement target. The operation of each steam trap can be determined by transmitting a temperature signal and wirelessly receiving each steam trap by the variable receiving device.

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

The operation determination device is provided with a variable reception band type reception device and a transmission device having a transmission band that is in one-to-one correspondence with the steam trap. It is possible to determine the operation by receiving the conditions necessary for the measurement and the measurement result without moving.

EFFECTS OF THE INVENTION The labor and time required to find and move the location where each steam trap is attached can be reduced, and the conditions required for measurement and the measurement results can be adjusted by the reception band variable type reception device provided in the operation determination device. The operation can be judged by receiving every steam trap, and the labor and time for measurement can be greatly reduced.

Further, by performing the operation determination wirelessly, the operation can be easily and accurately determined even when the installation location of the steam trap is changed.

Example An example showing a specific example of the above technical means will be described (see FIGS. 1 and 2).

The steam trap wireless remote operation determination device of the present invention,
A detector 1 and a calculation display 2 each having a built-in variable receiver 9 shown in FIG. 1, and a steam trap 21 shown in FIG.
The transmitter 3 attached to the exit side of the.

The transmitter 3 includes a measuring unit 10 for measuring the operating state of the steam trap 21 and a converter for converting the measurement data into an electric signal.
11, a storage unit 13 for storing a model number according to the operating principle of the steam trap 21, a code number according to the specification pressure and the nominal diameter, and a condition necessary for measurement such as an identification symbol, and the stored data. And the transmitter 14 for transmitting the converted measurement data to the receiving device 9. Also, the storage unit
In 13, it is preferable to store auxiliary conditions for measurement, that is, working pressure indicating the pressure at which the steam trap is actually used, attachment conditions of the steam trap, and the like.

The measuring unit 10 is provided with a vibration sensor for measuring the vibration and temperature of the steam trap 21, a temperature sensor (not shown), an electrode rod (not shown) for distinguishing steam from condensate, and the like.

The frequency and the like of the signal transmitted from the transmitter 14 are appropriately selected so as to be in one-to-one correspondence with the attached steam trap 21.

When the steam trap 21 is measured, the reception band of the variable receiver 9 is adjusted to the transmission band of the transmitter 14 corresponding to the trap to be measured. When the transmission signal from the transmitter 14 enters the area where the reception device 9 can reach, the reception device 9
Receives the stored data and the measured data from the transmitter 14.

The received signal is taken into the arithmetic and display unit 2 via the cable 12, amplified by the amplifier 4, digitally converted by the analog / digital converter 5, and entered into the microcomputer 6.

The microcomputer 6 calculates the amount of steam leakage from the vibration signal, the temperature signal and the measurement conditions, compares the amount of steam leakage with a reference value, judges whether the operating state of the steam trap is good, and displays it on the display unit 7. The operation determination data of each trap is stored in the memory unit 8. The stored data is utilized for trap maintenance management as needed.

[Brief description of drawings]

FIG. 1 is a schematic diagram of a configuration of a wireless remote operation determining device for a steam trap of the present invention, and FIG. 2 is a schematic diagram of a configuration of a steam trap and a transmitting device of the present invention. 1: Detector, 2: Calculation display 3: Transmitter, 9: Receiver 20: Storage device, 21: Steam trap

Claims (1)

[Claims] 1. A steam leak amount is calculated from the correlation between the vibration and the steam leak amount, which is obtained by detecting the temperature and vibration associated with the operation of the steam trap and using the steam pressure as a parameter which is measured and stored in advance. In the steam trap operation determination device for determining the quality of the operation condition of the steam trap, the operation determination device is provided with a reception band variable type reception device,
A transmitter having a transmission band corresponding to the steam trap in a one-to-one correspondence is attached to the steam trap directly or in the vicinity of the steam trap, so that the transmission device can measure the conditions necessary for measurement and the vibration signal of the measurement target. A wireless remote operation determination device for a steam trap, which is capable of determining the operation of each steam trap by transmitting a temperature signal and wirelessly receiving each steam trap by the variable type receiving device.