JPS6240504A - Control device of pressure governor - Google Patents

Abstract

PURPOSE:To execute rewriting of a data by providing an input means, a storage means, and a display means, inputting and also displaying a new pressure chart data, executing a confirmation of an input data, and thereafter storing it. CONSTITUTION:When a switching time is inputted from a keyboard 13, it input time is displayed on an upper stage first item 14a of a display 14, and whether the inputted switching time coincides with time 23:59 or not is discriminated. When it does not coincide, when a pressure set value corresponding to the inputted switched time is inputted, this pressure set value is displayed on an upper stage second item 14b of the display 14. In this way, the first pattern in a period T1 extending from time 00:00 of a pressure chart to said switching time is set. Thereafter, in the same way, the second pattern, etc. of a period T2 are set. When the time 23:59 is inputted as the switching time, this setting processing is ended. When the setting has been ended, a CPU 10 reads out a pressure set value which has been set to a RAM 12, and executes a comparing operation with a digital detecting voltage. As a result, an obtained difference detecting signal is sent to a motor driving circuit 18.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a pressure regulator control device, which controls the pressure regulator by switching the secondary pressure of the pressure regulator to the pressure set value each time a pressure chart changes. Regarding a control device.

BACKGROUND OF THE INVENTION In general, city gas produced in a factory is supplied to each consumer via a high-pressure transportation main line, medium-pressure pipe, and low-pressure pipe. A pressure regulator s5 (hereinafter referred to as "governor") is provided between the high-pressure transport main line and the medium-pressure conduit, and between the medium-pressure conduit and the low-pressure conduit to lower the gas pressure.

By the way, the demand group for gas is the number of customers, season, and 11 days.

Because it varies greatly over time, as shown in Figure 2,
By adding a remote setter 2 and a control device (hereinafter referred to as "cabana controller") 3 to the governor 1, the secondary pressure of the governor 1 (pressure in the conduit 4a) can be adjusted so that the gas pressure at each customer is constant. ing. In Fig. 2, the governor 1 compares the pressure set by the pilot 1a with the secondary pressure of the governor 1 (the pressure of the conduit 4a), and controls the pulp 1C so that the secondary pressure becomes the set pressure of the pilot 1a.
Variable opening degree. The governor controller 3 stores in its ROM pressure set values corresponding to the number of customers, season, day of the week, etc., and supplies a control signal to the remote setter 2 based on the pressure set values.

As a result, the remote setter 2 operates the built-in motor to displace the setting spring in the pilot 1a, thereby varying the setting pressure of the pilot 1a. Therefore, the pressure in the conduit 4a output from the governor 1 becomes equal to the pressure setting value stored in the ROM as time passes. .

Problems to be Solved by the Invention In the conventional governor controller 3, pressure setting values, that is, pressure charts corresponding to the number of customers, season, 8189 hours, etc., were all stored in the ROM.

Therefore, if it becomes necessary to change the pressure chart due to an increase or decrease in the number of customers, for example, remove the ROM from the governor controller 3, rewrite the pressure chart in this ROM, and then insert the ROM into the governor controller 3 again.
There was a problem in that it had to be attached to the body, which was time-consuming.

Therefore, the present invention provides a voltage regulator that solves the above problems by providing an input means, a storage means, and a display means.
The purpose is to provide a 1wB device.

Means for Solving the Problems In the present invention, new pressure chart data is input by setting at least the switching time and pressure set value using the input means. This new pressure chart data is stored in the storage means and displayed on the display means.

Operation In the present invention, a new pressure chart is inputted by the input means and stored in the storage means, and the pressure chart can be rewritten by each control device. Also, a new pressure chart is displayed together with the input, and this new pressure chart can be confirmed.

Embodiment FIG. 1 shows a block system diagram of an embodiment of a control device for a pressure regulator, namely a governor controller, according to the present invention. In the figure, 10 is a CPU, which executes a program stored in a ROM 11.

The RAM 12 stores pressure chart data such as pressure setting values and switching times. The keyboard 13 has the above settings,
Input instructions such as switching time are given, and the display 14 displays the status of the input instructions and the like.

The potentiometer 15 whose resistance value changes in proportion to the displacement of the setting spring of the remote setter 2 (shown in FIG. 2) is R
The resistance value is read by /V conversion 1116, and R
The /V converter 16 generates a detection voltage having a value corresponding to the displacement of the setting spring and supplies it to the A/D converter 17. The detection voltage digitized by the A/D converter 17 is CPtJlo
supplied to The CPU 10 stores RAM at each switching time.
The pressure set value is read out from 12 and compared with the digital detection voltage. The difference detection signal obtained as a result is supplied to the motor drive circuit 18, and depending on the polarity of the difference detection signal, a drive current is applied to either the forward rotation coil L1 or the reverse rotation coil L2 for a time corresponding to the value of the difference detection signal. Supplied. The forward rotation coil L's and the reverse rotation coil L2 drive the motor in the remote upper vine 2 in forward and reverse rotation.
The forward rotation of the motor displaces the setting spring of the pilot 1a in the direction of increasing the secondary pressure, and the reverse rotation displaces the setting spring of the pilot 1a in the direction of decreasing the secondary pressure.

Next, to explain the pressure setting process of the governor controller 3, the front panel of the governor controller 3, as shown in FIG. - A display 14 for displaying numbers is provided.

FIG. 4 shows a flowchart of one embodiment of the pressure setting process executed by cpuio. By specifying and inputting the program number of the pressure setting program using the keyboard 13, the program shown in FIG. 4 starts execution. First, first guidance is displayed on the display 14 as shown in FIG. 5(A) (step 20). After this, when a program number is input (step 21), it is determined whether the pressure chart of this program number is in operation (step 22). The program number here is from time 00:00 on the 11th to time 23:5.
This is a number assigned to a pressure chart consisting of a series of switching times up to 9 and corresponding pressure setting values, and a plurality of pressure charts are stored in the RAM 12. If it is determined in step 22 that it is under control, step 20
, the setting process for this program number is prohibited.
If the pressure chart is not under control, the pressure chart (stored in the RAM 12) corresponding to the input program number is erased (step 23).

After execution of step 23, second guidance is displayed on the upper stage of the display 14 shown in FIG. 5(B) (step 24). At this point, the pattern number is "1". After that, when the switching time is input from the keyboard 13, the input time is displayed in the upper column 1 item 1 of the display 14.
4a (step 25), and it is determined whether the input switching time matches the time 23:59 (step 26). If they do not match, the process moves to step 27. In step 27, when the pressure setting value corresponding to the switching time input in step 25 is input, this pressure saw setting value is displayed in the upper two items 14 of the display 14.
b is displayed and the process moves to step 28, and if the delay time is input here, the process moves to step 29. Step 29
Then, the pattern number in the second guidance is incremented and displayed. By the above steps 25 to 29, the time oo of the pressure chart shown in FIG. 6 (A>):
A first pattern for the period T1 from oo to the switching time is set. After this, steps 25 to 29 are repeatedly executed to set the second pattern and subsequent patterns of period T2,
The pressure chart shown in FIG. 6(A) is completed. Here, in step 25, the switching time is set to 23:59.
When inputting , the process shown in the fifth diagram ends. In addition, when delay time @ is set to "0" in step 28, as shown in Fig. 6 (B)
A pressure chart like this is set up.

In this way, a new pressure chart can be input and set in each governor controller by operating the keyboard 13, so it is easy to rewrite the pressure chart in response to an increase or decrease in the number of customers, for example. . Furthermore, when rewriting the pressure chart, guidance is first displayed on the display 14 and new pressure chart data is displayed, so the new pressure chart data can be confirmed and input errors can be prevented.

Effects of the Invention As described above, the pressure regulator control device of the present invention is equipped with input means, storage means, and display means, so that pressure chart data can be rewritten in each control device, and this rewriting is possible. It can be done easily and without much effort,
Furthermore, it has features such as being able to confirm input pressure chart data and preventing input errors.

[Brief explanation of the drawing]

FIG. 1 is a block system diagram of one embodiment of the device of the present invention, and FIG.
3 is a plan view of one embodiment of the front panel of the device of the present invention, FIG. 4 is a flowchart of one embodiment of the pressure setting process, and FIG. 5 is a diagram for explaining the control operation of the pressure regulator. FIG. 6 is a diagram showing each side of the display of the device of the invention; FIG. 6 is a diagram showing each side of the pressure chart set by the device of the invention. 1... Voltage regulator (governor), 2... Remote setter,
3...l! IItIIl outfit 2! (Governor controller), 10...CP (J, 12...RAM, 13...
・Keyboard, 14...Display, 20-29・
...step.

Claims (1)

[Claims] A pressure regulator that reduces the fluid pressure flowing into the primary side and controls the secondary pressure of the pressure regulator that flows out from the secondary side by switching it to the pressure setting value of the pressure chart set in advance every time the switching time of the pressure chart is reached. In the control device, an input means for inputting at least a switching time and a pressure setting value as new pressure chart data, a storage means for storing the new pressure chart data inputted by the input means, and an input means for inputting the new pressure chart data input by the input means. 1. A control device for a pressure regulator, comprising: display means for displaying new pressure chart data.