JP2002162024A - Lamp oil supply system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To smoothly operate a lamp oil supply system by properly detecting failures of operation conditions of a lamp oil combustion apparatus by a lamp oil customer and indoor conditions, and quickly dealing with the detected failure. SOLUTION: There is provided a lamp oil supply system for supplying light oil from a lamp oil tank to a lamp oil combustion apparatus 91 of a lamp oil customer through a lamp oil supply piping 85 by a lamp oil supply piping 85. In the system, a cumulative flow rate meter 87 and an interruption valve 90 are connected to the lamp oil piping 85 for each lamp oil customer. The cumulative flow rate meter 87 is connected with.the lamp oil combustion apparatus 91 associated with the use of the lamp oil customer through a first signal line 95, while the cumulative flow rate meter 87 is connected with a user of a signal indicative of operation conditions of the apparatus issued from the lamp oil combustion apparatus 91 through a second signal line 97. The interruption valve 90 performs an opening/closing operation by receiving control by an interruption valve control circuit in the cumulative flow rate meter 87 on the basis of a request from the user of a signal issued from the lamp oil combustion apparatus 91.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a kerosene supply system for kerosene consumers.

[0002]

2. Description of the Related Art
The supply of kerosene used as fuel in ordinary households,
This is done by each kerosene consumer (each household, etc.) individually purchasing small quantities from kerosene suppliers in portable tanks and the like. In this case, kerosene is injected into each kerosene-burning device, for example, a device tank of an oil water heater or an oil heater in each household.

In recent years, however, kerosene tanks are installed in advance outdoors, for example, on the ground or underground, for each household or for a group of a plurality of homes, and kerosene is supplied from the kerosene tank to kerosene-burning equipment of each household through kerosene piping. The system to do it is beginning to spread. Although such a kerosene supply system requires initial investment, once the system has been constructed, the kerosene supply company supplies kerosene to each household, collects tolls from each household, and collects each household's fees. There is an advantage that the supply of kerosene to the kerosene-burning equipment in the above becomes easy.

However, fuel kerosene as a thermal energy source is inexpensive compared to gas and electricity,
The fact that it has not been realized as a large-scale supply system like city gas and electricity is the key to smooth operation of the system. This indicates that there is room for further improvement in the means for detecting abnormalities in the indoor situation and measures for dealing with the abnormalities.

Therefore, the present invention accurately detects the operating condition of the kerosene-burning device of each kerosene consumer in the kerosene supply system and the abnormality in the condition of the room in which the kerosene-burning device is arranged, and promptly detects the abnormality. It is intended to deal with the problem and to operate the system smoothly.

[0006]

According to the present invention, a kerosene supplier supplies kerosene from a kerosene tank to a kerosene consumer via a kerosene supply pipe to a kerosene demander. In the supply system, the kerosene supply pipe is provided with an integrating flow meter for each kerosene consumer, and the integrating flowmeter is connected to a kerosene combustion device related to the use of the kerosene consumer and a first signal transmission path. Wherein the integrating flow meter is connected to a user of a signal emitted by the kerosene combustion device via a second signal transmission path.

[0007] In one embodiment of the present invention, the signal emitted from the kerosene-burning device is a signal indicating an operating state of the kerosene-burning device. In one embodiment of the present invention, the signal emitted from the kerosene-burning device is a signal indicating a situation in a room where the kerosene-burning device is arranged. In one aspect of the present invention, a user of the signal emitted by the kerosene-burning equipment is the kerosene-supplying business operator, a related company of the kerosene-burning equipment, and / or a manager of a house in which the kerosene consumer lives.

In one embodiment of the present invention, the kerosene supply pipe is provided with a shutoff valve for each kerosene consumer, and the shutoff valve is opened and closed based on a user's request of a signal generated by the kerosene combustion equipment. Perform the operation. In one embodiment of the present invention,
The integrating flow meter includes a shutoff valve control circuit that controls opening and closing of the shutoff valve.

In one aspect of the present invention, the integrating flow meter has a CPU, and a shut-off valve control circuit of the integrating flow meter operates based on a command signal from the CPU. In one embodiment of the present invention, the CPU may be configured to close the shut-off valve to the shut-off valve control circuit when a signal related to a user's request of a signal generated by the kerosene combustion device is input. Issues a command signal. In one embodiment of the present invention, the CPU is connected to a computer of a user of a signal generated by the kerosene-burning device via the second signal transmission path, and an instruction signal is input from the computer. Sends a command signal to the shutoff valve control circuit to close the shutoff valve.

In a further aspect of the present invention, a plurality of kerosene consumers receive supply of kerosene from a common kerosene tank, and each of the common kerosene tanks is provided with a respective integrated flow meter of the kerosene consumer. A connected centralized monitoring panel is provided, and the second signal transmission path is via the centralized monitoring panel.

In one aspect of the present invention, the centralized monitoring panel has a CPU, and a shutoff valve control circuit of the integrating flow meter operates based on a command signal from the CPU. In one embodiment of the present invention, the CPU may be configured to close the shut-off valve to the shut-off valve control circuit when a signal related to a user's request of a signal generated by the kerosene combustion device is input. Issues a command signal. In one embodiment of the present invention, the CPU is connected to a computer of a user of a signal generated by the kerosene-burning device via the second signal transmission path, and an instruction signal is input from the computer. Sends a command signal to the shutoff valve control circuit to close the shutoff valve. In one embodiment of the present invention, kerosene consumers receiving kerosene from the common kerosene tank are divided into a plurality of groups, each of which receives kerosene from the common kerosene tank and receives the kerosene from the common kerosene tank. An intermediate tank that supplies kerosene to all kerosene consumers belonging to the group is provided, and a relay panel is configured including the intermediate tank, and the relay panel includes the integrating flow meter and the centralized monitor that belong to the group. The connection with the board is relayed, and the second signal transmission path is via the relay board.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a conceptual diagram of a kerosene supply system according to the present invention. Each detached house 62 in which a kerosene consumer lives is provided with a kerosene tank 60 that is buried underground (or installed on the ground) for each house or in common for several houses. Kerosene tank 61 is provided. The kerosene tank 60 and the indoor pipe of the detached house 62 are connected by a kerosene supply pipe 64, and the kerosene tank 61 and the indoor pipe of each house in the apartment house 63 are connected by a kerosene supply pipe 65. I have. Kerosene combustion equipment such as an oil heater (fan heater, etc.) and an oil water heater are connected to the indoor piping of each house.

At each kerosene customer's house, kerosene integrated flow meters 68, 69 are interposed between the pipes 64, 65 and the indoor pipes. The integrating flow meters 68 and 69 are described in, for example,
It is an indirectly heated thermal flow meter as described in Japanese Patent No. 18566, and outputs an electric signal corresponding to the integrated flow rate of kerosene flowing in a kerosene flow passage (pipe). In this flowmeter, an electric circuit (detection circuit) including a bridge circuit is used to obtain an electric output corresponding to the flow rate of kerosene (details will be described later). The integrated flow rate output signals of the integrated flow meters 68 and 69 are transmitted through telephone lines or wireless communication lines 70 and 7.
1 is connected to a computer in the centralized monitoring center of the kerosene supplier 76.

Although only the kerosene consumer who receives kerosene supply from the two kerosene tanks 60 and 61 has been described above, the same applies to kerosene consumers (not shown) that receive kerosene supply from some other kerosene tanks (not shown). It is.

When a report signal indicating that the remaining amount of each kerosene tank has reached the minimum allowable value is input from a level meter attached to each kerosene tank to the computer of the kerosene supplier 76, a report is made according to the replenishment plan. The kerosene is supplied to the kerosene tank related to the signal generation by batch delivery by the tank lorry 77. In particular, in the case of the apartment 63,
For all the units belonging to the apartment house, a monitor device 78 can be connected to the communication line 71 to perform monitor management collectively.

FIG. 2 is a schematic diagram showing a kerosene supply system of a large-scale apartment house in the kerosene supply system as described above. From the large kerosene tank 80 buried underground, the central monitoring panel 8
The kerosene is supplied to an intermediate tank in a relay board 83 provided on each floor via a kerosene supply pipe 82 by a pump built in the fuel cell 1. The kerosene overflowed in the intermediate tank is returned to the kerosene tank 80 via the kerosene return pipe 84. Kerosene is supplied from the intermediate tank of each floor to each house (each kerosene consumer) 86 via the kerosene supply pipe 85 of the floor. In each door 86, kerosene is supplied to the kerosene combustion equipment via the integrating flow meter 87.

FIG. 3 is a diagram showing details of the centralized monitoring panel 81. The centralized monitoring panel 81 includes two pumps (a first oil pump 81a and a second oil pump 81b) connected to a kerosene supply pipe 82 and connected in parallel with each other.
The pumps 81a and 81b are connected to the CP via a terminal board 81c.
Connected to U81d. The kerosene tank 80 is provided with an oil level meter 80a.
a is also connected to the CPU 81d via the terminal board 81c.

The CPU 81d has an internal communication terminal 81
e, external input / output terminal section 81f, telephone line / wireless communication line terminal section 81g, keyboard input section 81h, and display section 81
i is connected. The internal communication terminal 81e is connected to the relay board 83 on each floor, and further connected to a fire alarm 88. The external input / output terminal portion 81f is connected to the apartment house management room. The telephone line / wireless communication line terminal portion 81g is connected to the central monitoring center 76 and a kerosene combustion device manufacturer.

Further, the centralized monitoring panel 81 has a vibration sensor 81j for detecting an earthquake.
The output signal of j is input to the CPU 81d.

FIG. 4 is a diagram showing details of the relay board 83. As shown in FIG. The relay board 83 includes an intermediate tank 83a. Kerosene supplied from the kerosene supply pipe 82 is introduced into the intermediate tank 83a via the electromagnetic valve 83b. Intermediate tank 8
A level meter 83c is attached to 3a, and a float 83d of the level meter 83c is movable vertically along a guide. Allowable lower limit position contact 83
e, an allowable upper limit position contact 83f and a warning position contact 83g are provided, and when the float 83d reaches these contacts due to a change in the kerosene liquid level in the tank, the level meter 83 is provided.
c outputs a signal. The output signal of the level meter 83c is input to the relay CPU 83i via the terminal board 83h. The relay CPU 83i outputs a valve opening / closing control signal to the electromagnetic valve 83b via the terminal board 83h. The relay CPU 83i is connected to the centralized monitoring panel 81, and further connected to the flow meter 87 of each house 86. Relay board 83
A voltage converter 83j is arranged in the inside, and the voltage converter 83j converts the household power supply AC100V to DC12V and D
It is converted to C24V and supplied to the equipment in the relay board and the flowmeter 87 and other equipment in each house. Voltage converter 8
From 3j, 100V AC can be supplied to the flow meter 87 and other devices in each house.

FIG. 5 is a diagram showing a flow meter 87 and other devices in each house. A flow meter 87 and an emergency shutoff valve 90 are connected to the kerosene supply pipe 85, and a kerosene combustion device 91 such as a kerosene water heater is connected in each house. still,
A plurality of devices may be used as the kerosene combustion device 91. Each of the kerosene-burning devices 91 is a signal indicating the operating condition of the kerosene-burning device (for example, a temperature signal obtained from a temperature sensor, a humidity sensor, a carbon monoxide concentration meter, or the like disposed in the combustion section and indicating a combustion condition; A humidity signal or a carbon monoxide concentration signal). The signal indicating the operating state of the kerosene-burning apparatus may be coded information indicating an operation diagnosis result obtained from a kerosene-burning apparatus having a self-operation diagnosis function. Each of the kerosene combustion devices 91
Furthermore, a signal indicating the state of the room where the kerosene-burning device is installed (for example, a temperature signal or humidity indicating the indoor condition obtained from a temperature sensor or a humidity sensor disposed on the outer surface of the device or an indoor air intake unit or the like) Signal or the like).

The signal emitted from the kerosene combustion equipment 91 as described above is sent to a flow meter 87 via a signal line 95 as a first signal transmission path. A DC power supply line 96 connected to the relay board 83 and a signal line 97 constituting a part of the second signal transmission path are connected to the flow meter 87.
The signal emitted from the kerosene-burning device 91 is sent to the relay panel 83 after being subjected to the process of attaching the identification number of the door and the like in the flow meter 87. The emergency shutoff valve 90 is also connected to the flowmeter 87 via an input / output signal line for the emergency shutoff valve.

In each door, a manual operation button (kerosene supply stop signal input means) 92 for opening and closing the emergency shutoff valve 90 is installed. The operation button 92 is connected to the flow meter 87 via a signal line. Have been.

FIG. 6 is a schematic diagram showing the overall configuration of the integrating flow meter 87, particularly a flow rate detecting system. Flow detection unit 4
And fin plates 24, 2 of fluid temperature detecting unit 6
The end of 4 ′ is connected to the fluid passage 3 formed in the passage member 2.
Extends inside. The fin plates 24, 24 'extend through the center of the cross section in the fluid flow passage 3 having a substantially circular cross section. Fin plate 24,
24 ′ is disposed along the flow direction of the fluid in the fluid (kerosene) flow passage 3, so that the flow rate detection unit 22 and the fluid temperature detection unit 22 ′ can be connected to the fluid without significantly affecting the fluid flow. It is possible to transfer heat well between. The direction of fluid flow in the fluid flow passage 3 is indicated by an arrow.

A DC voltage V1 is supplied from the relay board 83 to the bridge circuit (detection circuit) 40 via a power supply line. The bridge circuit 40 includes a thin film temperature sensing element 41 for flow rate detection of the flow rate detection unit 4, a thin film temperature sensing element 41 ′ for temperature compensation of the fluid temperature detection unit 6, and resistors 43 and 44. The potentials Va and Vb at the points a and b of the bridge circuit 40 are differentially amplified.
The signal is input to the integration circuit 46.

On the other hand, the DC voltage V2 supplied from the relay board 83 via the power supply line is supplied to the thin film heating element 48 via the transistor 50 for controlling the current supplied to the thin film heating element 48 of the flow rate detecting unit 4. It is supplied to the body 48. That is, in the flow rate detecting section 22, based on the heat generated by the thin film heating element 48, the thin film temperature sensing element 41 performs temperature sensing under the influence of heat absorption by the fluid to be detected via the fin plate 24. Then, as a result of the temperature sensitivity, the bridge circuit 4
The difference between the potentials Va and Vb at points a and b of 0 is obtained.

The value of (Va-Vb) changes as the temperature of the flow sensing temperature sensing element 41 changes according to the flow rate of the fluid. By appropriately setting the resistance values of the resistors 43 and 44 of the bridge circuit 40 in advance, the value of (Va−Vb) can be made zero in the case of a desired fluid flow rate serving as a reference. At this reference flow rate, the output of the differential amplification / integration circuit 46 is constant (a value corresponding to the reference flow rate), and the resistance value of the transistor 50 is also constant. In this case, the partial pressure applied to the thin-film heating element 48 is also constant, and the voltage at the point P at this time indicates the reference flow rate.

When the fluid flow rate increases or decreases, the output of the differential amplifying / integrating circuit 46 has a polarity (depending on the positive or negative of the resistance-temperature characteristic of the flow rate sensing element 41) according to the value of (Va-Vb). And the output of the differential amplifying / integrating circuit 46 changes accordingly.

When the flow rate of the fluid increases, the temperature of the flow sensing temperature sensing element 41 decreases. Therefore, the differential amplification / integration is performed so as to increase the calorific value of the thin film heating element 48 (that is, increase the power). From the circuit 46, a control input to the base of the transistor 50 is made so as to reduce the resistance value of the transistor 50.

On the other hand, when the fluid flow rate is reduced, the temperature of the flow rate detecting temperature sensing element 41 rises.
In order to reduce the heat value of the transistor 8 (that is, reduce the power), the differential amplification / integration circuit 46 provides a control input to the base of the transistor 50 so as to increase the resistance value of the transistor 50.

As described above, the heat generation of the thin-film heating element 48 is feedback-controlled so that the temperature detected by the flow sensing element 41 always becomes the target value regardless of the change in the fluid flow rate. At this time, the thin film heating element 48
(Voltage at point P) corresponds to the fluid flow rate, and is taken out as a flow rate output. This flow rate output is A / D converted by the A / D converter 52,
After being accumulated by the PU 54, the accumulated flow is displayed by the accumulated flow rate display unit 56.

A control circuit 57 for controlling the opening and closing of the emergency cutoff valve 90 is connected to the CPU 54. still,
The CPU 54 and the relay board 83 transmit and receive various signals such as an electric signal related to a flow rate such as an integrated flow rate, a signal emitted from the kerosene combustion device 91, and a signal related to emergency shutoff valve control.

FIG. 7 is a diagram showing the operational relationship between the flow meter 87 and the shut-off valve 90. The flowmeter 97 has a shut-off valve 9.
There is provided a control circuit 57 for controlling the energization of the solenoid valve constituting 0. The control circuit 57 includes an FET, and controls a current flowing between the source and the drain with a gate voltage. When the gate voltage is high, the source
The resistance between the drains decreases, a required current flows through the circuit including the solenoid valve, and the shutoff valve 90 is closed. Usually, F
The gate voltage of ET is at a low level, and the shutoff valve 9
0 is open.

FIG. 8 shows the shut-off valve control circuit 57 of the flow meter 87.
It is a figure which shows the modification of. In this example, AC100V is used as a power supply of a control circuit 57 for controlling the energization of the solenoid valve constituting the shut-off valve 90. The control circuit 57 includes a relay. At times, the relay is closed, the required current flows through the circuit including the solenoid valve, and the shutoff valve 90 is closed. Normally, the control voltage of the relay is at a low level, and the shutoff valve 90 is open.

Hereinafter, the functions of the centralized monitoring panel 81, especially the CPU
The operation of 81d will be described in detail.

When the value of the kerosene liquid level input from the kerosene tank level meter 80a falls below a predetermined lower limit (when the remaining amount of kerosene in the tank falls below the minimum allowable value), The need for kerosene replenishment is notified to the centralized monitoring center 76 via the telephone line / wireless communication line terminal 81g.

The relay board 8 is connected via the internal communication terminal 81e.
The output signal of the third level meter 83c is input via the relay CPU 83i. When the detection signal of the allowable lower limit position contact point 83e is obtained, at least one of the oil feed pumps 81a and 81b is driven to send the kerosene in the tank 80 to the intermediate tank 83a in the relay board via the pipe 82. Supply. When the detection signal of the allowable upper limit position contact 83f is obtained, the driving of the oil feed pumps 81a and 81b is stopped. If the detection signal of the warning position contact 83g is obtained without properly stopping the driving of the oil feed pumps 81a and 81b, the CP
U81d sends a signal for closing electromagnetic valve 83b via relay CPU 83i in relay board 83. If the supply of kerosene is continued without properly closing the solenoid valve 83b, the kerosene is returned to the kerosene tank 80 via the return pipe 84.

An output signal of the instantaneous flow rate or the integrated flow rate is transmitted from the flow meter 87, and the output signal is transmitted to a relay CPU in the relay panel.
83i, and further via the internal communication terminal 81e, C
This is input to the PU 81d. Then, the signals of the instantaneous flow rate and the integrated flow rate are sent to the centralized monitoring center 76 via the telephone line / wireless communication line terminal 81g as appropriate. Based on this, the centralized monitoring center 76 calculates the fee based on the kerosene consumption of each house.

Here, the use of the signal emitted from the kerosene combustion equipment 91 will be described. The signal arriving at the centralized monitoring panel 81 via the relay panel 83 is sent to the CPU 81d, and is output to the centralized monitoring center 76 as a user of the signal, the combustion equipment manufacturer and / or the administrator's office. These paths constitute a second signal transmission path. The centralized monitoring center 76, the combustion equipment manufacturer and the supervisory office centralized monitoring center each have a computer (including a small computer such as an office computer or a personal computer) so that the computer and the CPU of the centralized monitoring panel 81 can be provided.
The transmission and reception of signals can be performed with 81d.

In the central monitoring center 76, when a combustion abnormality of the kerosene combustion equipment 91 in each house is detected (for example, when an abnormally high or abnormally low temperature is detected in the combustion part during combustion, or when an abnormal carbon monoxide concentration is detected). ), A signal requesting that the shut-off valve 90 be closed is sent to the C
It can be issued to the PU 81d.

A combustion equipment manufacturer (including a kerosene combustion equipment related company such as a maintenance company of the combustion equipment) detects a combustion abnormality of the kerosene combustion equipment 91 in each house or an operation abnormality by self-operation diagnosis. In such a case, the cause can be analyzed and advice can be given to the kerosene consumer regarding the normal operation of the kerosene combustion equipment and the measures for restoration to normal combustion.

In the caretaker room (including a security maintenance company, etc.), if abnormal combustion of the kerosene-burning equipment 91 in each house or abnormal indoor conditions in each house is detected (for example, abnormal high temperature in the room is detected) In such cases, appropriate measures to maintain security (for example, site confirmation and contact to registered contacts, etc.) are taken in consideration of the possibility of a fire or the like occurring in each house.

Next, the CPU 8 involved in opening and closing the shutoff valve 90
1d Other functions and operations will be described. Shut-off valve 90 is normally open and closed only in emergencies and when needed. The shut-off valve 90 is closed in the following cases, and the following operations are respectively performed. When the shut-off valve 90 is closed, a command signal for shutting off the shut-off valve is output from the CPU 81d to the flow meter 87 of each house via the internal communication terminal portion 81e and the relay CPU 83i in the relay board. This is performed by setting the control voltage of the shut-off valve control circuit 57 to a high level. Then, the supply of kerosene to each house is stopped.

(1) When a Fire Occurs: When the fire alarm 88 operates, its signal is transmitted to the CP via the internal communication terminal 81e.
It is input to U81d. In this case, the CPU 81d issues a command signal for closing the shutoff valve for all the units.

(2) When an earthquake occurs: When the signal indicating the magnitude of the vibration input from the vibration sensor 81j to the CPU 81d, which has detected the earthquake, exceeds a preset value, the CPU
81d issues a command signal to shut off the shutoff valve for all the units.

(3) When a request is made from the central monitoring center 76 or the manager's office: When a serious accident occurs in a nearby area or when the kerosene supply system of the condominium is inspected,
A signal indicating this is input from the centralized monitoring center 76 or the manager's office to the centralized monitoring panel 81. In that case, C
The PU 81d issues a command signal to shut off the shutoff valve for all the units.

When the centralized monitoring center 76 or the manager's room detects an abnormality in the combustion or operation of the kerosene combustion equipment 91 in each house or an abnormality in the indoor condition based on the signal emitted from the kerosene combustion equipment 91, A signal indicating this is input to the centralized monitoring panel 81 from the centralized monitoring center 76 or the manager's office. In this case, the CPU 81d issues a command signal to close the shutoff valve only for the door.

(4) When the flow meter 87 notifies the abnormality detection of the kerosene supply state of each house: The flow meter 87 can detect a minute instantaneous flow rate (for example, 0.02 liter / h). . On the other hand, the kerosene-burning device 91 has an instantaneous kerosene consumption amount during normal use (instantaneous kerosene circulation amount actually sucked by the kerosene-burning device 91) of, for example, 0.15 l / h or more. Therefore, the flow meter 87 keeps the flow rate at 0.02 liter / h or more for 0.1 hours or more for a predetermined time (for example, 1 hour).
If an instantaneous flow rate of less than 5 liters / h is detected, the CPU 54 of the flow meter determines that a kerosene minute leak has occurred in the door and issues a kerosene minute leak signal. The kerosene minute leak signal is transmitted to the CPU 81d via the relay CPU 83i in the relay panel and further via the internal communication terminal 81e.
Is input to In that case, the CPU 81d issues a command signal for closing the shutoff valve for the door.

A flow meter 87 having a self-learning function for the kerosene flow rate can be used. In this case, the CPU 54 of the flow meter learns the kerosene consumption pattern of the door over a considerable period of time, and extracts its characteristics. For example, learning data on the maximum instantaneous flow rate or the maximum integrated flow rate per unit time is obtained and stored in a memory (not shown). Then, for example, when the instantaneous flow rate exceeds, for example, twice the stored maximum instantaneous flow value, or when the integrated flow rate per unit time exceeds, for example, 1.5 times the stored maximum integrated flow value per unit time. In such a case, the CPU 54 of the flow meter determines that a large amount of kerosene has leaked in the door and issues a kerosene large amount leak signal. This kerosene mass leak signal is transmitted to the CPU 81d via the relay CPU 83i in the relay panel and further via the internal communication terminal 81e.
Is input to In that case, the CPU 81d issues a command signal for closing the shutoff valve for the door.

The above-mentioned kerosene leak signal obtained by the flow meter 87 is not sent to the CPU 81d of the centralized monitoring panel 81, but is sent directly to the shut-off valve control circuit 57 of the flow meter 87. May be input. In this case, the content (cause and remedy) of the shutoff valve control executed is
The information is sent to the CPU 81d of the centralized monitoring panel 81, for example, as coded information.

(5) Operation by manual operation button 92 in the door: In this case, the signal of the shut-off valve closing instruction from the operation button 92 is transmitted via the flow meter 87 to the relay CPU 8 in the relay panel.
3i, and further via the internal communication terminal 81e, the CP
It is input to U81d. In that case, the CPU 81d issues a command signal for closing the shutoff valve for the door.

The shut-off valve closing instruction signal from the operation button 92 is directly input as a control voltage signal to the shut-off valve control circuit 57 of the flow meter 87 without being sent to the CPU 81d of the centralized monitoring panel 81. You may. In this case, the content (cause and countermeasure) of the executed shutoff valve control is sent to the CPU 81d of the centralized monitoring panel 81, for example, as coded information.

From the operation button 92, a signal for instructing to open the closed shut-off valve 90 can also be issued. The shut-off valve opening instruction signal is sent through the flow meter 87, through the relay CPU 83i in the relay board, and further through the internal communication terminal 81e.
Is input to the CPU 81d. In that case CPU
81d issues a command signal to open the shut-off valve for the door, provided that the shut-off valve is not being closed as described in (1) to (4) above. This signal is transmitted to the internal communication terminal 81e and the relay panel. The control voltage is transmitted to the flow meter 87 via the relay CPU 83i, whereby the control voltage of the shut-off valve control circuit 57 of the flow meter 87 is set to low level, and the supply of kerosene is restarted.

The contents of the shut-off valve control executed as described above are sent to the central monitoring center 76 immediately or as needed, and are sent to a management room or a combustion equipment manufacturer as needed.

Desired data can be input from the keyboard input section 81h. Examples of this data include the name of the contractor of each house, the contractor number, and the kerosene-burning equipment used, and the like, and the input data can be updated as appropriate. The CPU 81d can calculate and store the maximum value of the instantaneous kerosene supply amount that can be supplied to the kerosene combustion device and the maximum value of the total possible kerosene supply amount per unit time based on the kerosene combustion device data for each house. For example, when the instantaneous flow rate exceeds the stored instantaneous kerosene supply amount maximum value, for example, 1.2 times, or when the integrated flow rate per unit time is stored, the integrated kerosene supply amount maximum value per unit time is, for example, 1. .
If it exceeds twice, it can be determined that a large amount of kerosene has leaked in the door, and a command signal for closing the shutoff valve can be issued for the door.

The maximum value of the instantaneous supply amount of kerosene to the kerosene combustion equipment and the maximum value of the total supply amount of kerosene per unit time which are calculated for each unit as described above are sent to the flow meter 87 of each unit. The data is transferred and stored in the flow meter, and the CPU 54 of the flow meter 87 is written as described in (4) above.
May generate a kerosene mass leak signal. The measures to be taken in this case are the same as those described in the above (4).

In the display section 81i, a warning display indicating that the shutoff valve 90 has been closed for each door and other general displays are made as described above.

In the kerosene supply system of a large-scale apartment house described above, a plurality of kerosene consumers receive supply of kerosene from a common kerosene tank 80, and each kerosene demander has an integrated flow meter for each common kerosene tank 80. A centralized monitoring panel 81 connected to the centralized monitoring panel 81 is controlled by a CPU 81 d of the centralized monitoring panel 81. On the other hand, in the kerosene supply system of detached houses and small apartment houses, the number of kerosene consumers who receive kerosene from each kerosene tank is small. Without, it is preferable to have a similar operation. This can be realized by causing the CPU 54 of each flow meter 87 to substitute required portions of the functions of the centralized monitoring panel 81 of the above embodiment.

In this case, in the integrating flow meter 87, when an abnormal flow value is detected, the CPU 54 issues a command signal to the shut-off valve control circuit 57 to close the shut-off valve 90. This corresponds to the case (4). In addition, integrating flow meter 8
In 7, when a kerosene supply stop signal is input from the operation button 92, the CPU 54 issues a command signal to the shutoff valve control circuit 57 to close the shutoff valve 90. This corresponds to the case (5) above.

The CPU 54 is connected to the vibration sensor and the fire alarm, respectively, and the CPU 54 determines whether the magnitude of the vibration input from the vibration sensor is larger than a predetermined value or a fire alarm signal from the fire alarm. Is input, a command signal for closing the shut-off valve 90 may be issued to the shut-off valve control circuit 57. This corresponds to the above cases (1) and (2).

In these cases, the contents (causes and countermeasures) of the executed shut-off valve control can be sent to the computer of the central monitoring center 76 as, for example, coded information.

The CPU 54 is connected to a computer of the centralized monitoring center 76, and the integrating flow meter 87 instructs the shut-off valve control circuit 57 to close the shut-off valve 90 based on an instruction signal input from the computer. A command signal may be issued. This corresponds to the case (3) above.

The signals from the vibration sensor and the fire alarm are sent to the computer of the centralized monitoring center 76 without being sent to the flow meter 87, and an instruction signal is inputted from the computer to the CPU 54 of the flow meter 87, whereby Operations corresponding to (1) and (2) may be executed.

In the above-described embodiment and its modifications, the emergency shutoff valve 90 is connected to the kerosene supply pipe 85 to each house.
The shut-off valve is controlled by the shut-off valve control circuit 57 in the flow meter 87, so that various abnormal situations can be dealt with or the operation of shutting off the kerosene supply to each house can be easily and reliably performed if desired. Can be done. Further, by controlling the shut-off valve control circuit 57 in each flow meter 87 by the CPU 81d of the centralized monitoring panel 81, the shut-off valve can be efficiently opened and closed due to a common cause for all of the plurality of houses.

The integrating flow meter in the present invention is not limited to the one described in the above embodiment, and is not limited to the one using a thermal flow sensor.

[0067]

As described above, according to the present invention,
The integrating flow meter is connected to a kerosene combustion device used by a kerosene consumer through a first signal transmission path, and the integrating flow meter is connected to a user of a signal generated by the kerosene combustion device through a second signal transmission path. Therefore, it is possible to accurately detect the operating condition of the kerosene-burning equipment of each kerosene consumer and the abnormality of the situation in the room where the kerosene-burning equipment is arranged, and to quickly deal with it.
The kerosene supply system can be operated smoothly and safety can be improved.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram of a kerosene supply system according to the present invention.

FIG. 2 is a schematic diagram showing a kerosene supply system of a large-scale apartment house in the kerosene supply system according to the present invention.

FIG. 3 is a diagram showing details of a centralized monitoring panel.

FIG. 4 is a diagram showing details of a relay board.

FIG. 5 is a diagram showing a flow meter, a kerosene combustion device, a shutoff valve, and other devices of each house.

FIG. 6 is a schematic diagram showing an overall configuration of the integrating flow meter, particularly a flow detection system.

FIG. 7 illustrates the operational relevance of the flow meter and the shut-off valve.

FIG. 8 illustrates the operational relevance of the flow meter and the shut-off valve.

[Explanation of symbols]

 2 Flow path member 3 Fluid flow path 4 Flow rate detection unit 6 Fluid temperature detection unit 22 Flow rate detection unit 22 'Fluid temperature detection unit 24, 24' Fin plate 40 Bridge circuit (detection circuit) 41 Thin film temperature sensing element for flow rate detection 41 ' Temperature compensating thin-film thermosensitive element 43, 44 Resistor 46 Differential amplification / integration circuit 48 Thin-film heating element 50 Transistor 57 Emergency shut-off valve control circuit 60, 61 Kerosene tank 62 Detached house 63 Apartment house 64, 65 Kerosene supply piping 68 , 69 Kerosene integrated flow meter 70,71 Communication line 76 Kerosene supplier 77 Tank truck 80 Kerosene tank 80a Level meter 81 Centralized monitoring panel 81e Internal communication terminal 81f External input / output terminal 81g Telephone line / wireless communication line terminal 82, 85 Kerosene supply pipe 83 Relay panel 83a Intermediate tank 83b Solenoid valve 83c Bell meter 83d Floats 83e, 83f, 83g Contact 84 Return piping 86 Kerosene customer 87 Integrated flow meter 90 Emergency shutoff valve 91 Kerosene combustion equipment 92 Emergency shutoff valve manual operation button 95 Signal line 96 Power line 97 Signal line

Claims (14)

[Claims] 1. A kerosene supply system in which a kerosene supply company supplies kerosene from a kerosene tank to a kerosene demander via a kerosene supply pipe, wherein the kerosene supply pipe has an integrated flow rate for each kerosene demander. A meter is attached, the integrating flow meter is connected to a kerosene combustion device related to the use of the kerosene consumer by a first signal transmission path, and the integrating flow meter uses a signal generated by the kerosene combustion device. A kerosene supply system, wherein the kerosene supply system is connected to a user via a second signal transmission path. 2. The kerosene supply system according to claim 1, wherein the signal generated by the kerosene-burning device is a signal indicating an operation state of the kerosene-burning device. 3. The kerosene supply system according to claim 1, wherein the signal emitted from the kerosene combustion device is a signal indicating a state of a room where the kerosene combustion device is arranged. . 4. The user of the signal emitted by the kerosene-burning equipment is the kerosene-supplying business operator, a related company of the kerosene-burning equipment, and / or a manager of a house in which the kerosene consumer lives. The kerosene supply system according to any one of claims 1 to 3. 5. The kerosene supply pipe is provided with a shutoff valve for each kerosene consumer, and the shutoff valve performs an opening / closing operation based on a user's request of a signal generated by the kerosene combustion equipment. The kerosene supply system according to claim 1. 6. The flowmeter according to claim 1, further comprising a shutoff valve control circuit for controlling opening and closing of the shutoff valve.
The kerosene supply system according to claim 5. 7. The integrating flow meter has a CPU.
The kerosene supply system according to claim 6, wherein the shut-off valve control circuit of the integrating flow meter operates based on a command signal from the CPU. 8. When a signal relating to a user's request of a signal emitted from the kerosene combustion device is input, the CPU sends a command signal to the shutoff valve control circuit to close the shutoff valve. The kerosene supply system according to claim 7, wherein the kerosene supply system emits. 9. The CPU is connected to a computer of a user of a signal generated by the kerosene combustion device via the second signal transmission path, and when an instruction signal is input from the computer, the CPU is connected to the CPU. 9. The kerosene supply system according to claim 8, wherein a command signal for closing the shutoff valve is issued to a shutoff valve control circuit. 10. A kerosene customer is supplied with kerosene from a common kerosene tank by a plurality of kerosene consumers, and a centralized monitoring panel connected to each integrating flow meter of the kerosene consumer is arranged for each common kerosene tank. The kerosene supply system according to any one of claims 1 to 6, wherein the second signal transmission path is via the centralized monitoring panel. 11. The centralized monitoring panel has a CPU, and a shutoff valve control circuit of the integrating flow meter operates based on a command signal from the CPU.
0 kerosene supply system. 12. When a signal relating to a user's request of a signal generated by the kerosene-burning device is input, the CPU sends a command signal to the shut-off valve control circuit to close the shut-off valve. The kerosene supply system according to claim 11, wherein the kerosene supply system emits. 13. The CPU is connected to a computer of a user of a signal generated by the kerosene-burning device via the second signal transmission path, and when an instruction signal is input from the computer, the CPU is connected to the CPU. The kerosene supply system according to claim 12, wherein a command signal for closing the shutoff valve is issued to a shutoff valve control circuit. 14. Kerosene consumers receiving kerosene from said common kerosene tank are divided into a plurality of groups, each of which receives kerosene from said common kerosene tank and belongs to said group. An intermediate tank for supplying kerosene to a kerosene consumer is provided, and a relay panel is configured including the intermediate tank, and the relay panel is provided between the integrating flow meter and the centralized monitoring panel belonging to the group. The kerosene supply system according to any one of claims 10 to 13, wherein the connection is relayed, and the second signal transmission path is via the relay panel.