JPH02238218A - Oil server - Google Patents

Abstract

PURPOSE:To make an oil server miniaturization and simplification to be inexpensive by integrating a meter function for measuring and selling kerosene and a function for feeding from a home tank to a sub-tank to provide in an oil server. CONSTITUTION:A sub-tank 20, for example, is set in the neighborhood of a roof of a house A and connected to an oil server 30 through a feed pipe 21 while it is connected to a burning devices (for instance, air-conditioning device) 60 arranged in the respective rooms through indoor piping 22 to feed kerosene fed from a home tanm 10 by the oil server 30 with the use of a head drop to the burning devices 60 in each room. In addition, a board 54 is fixed on the upper inner face of a cover 51 and a LCD 55 which is a flow totalizing indication means is attached to the board 54. Thereby, totalizing indication of a kerosene flow can be precisely performed in a flow region of a wide range and an inexpensive oil server can be obtained at a small price.

Description

[Detailed description of the invention] [Object of the invention] (Industrial application field) This invention is provided in a pipe that supplies kerosene from a home tank to an auxiliary tank. 〇 (Conventional technology) Regarding an oil server that displays the total amount of kerosene
At the request of consumers, kerosene mutual suppliers deliver kerosene by tanker truck. Using the head difference between this kerosene tank and the combustion equipment installed indoors, kerosene is sent from the kerosene tank to the combustion equipment, while the kerosene meter (integrator) installed at the bottom of the kerosene tank measures the amount of kerosene consumed. Weighing.

Furthermore, in small housing complexes, as shown in FIG. 10 or 11, a home tank 1 is installed underground, and a kerosene supplier similarly delivers kerosene by tank truck at the request of a consumer. Here, kerosene in home tank 1 is in bomb 2
The water is once sent to a relay tank 3 installed on the roof, and from this relay tank 3 it is sent to individual tanks 4 installed on each floor. Using the difference in head between these individual tanks 4 and the combustion equipment 5 installed in each room, kerosene is sent from the individual tanks 4 to the combustion equipment 5 in each room, while the kerosene meter 6 installed in each room Kerosene consumption is being measured.

In addition, Fig. 10 shows the case where kerosene is distributed from one door-to-door tank 4 to two rooms, and Fig. 11 shows the case where kerosene is distributed from one door-to-door tank 4.
This is a case where kerosene is supplied to only one room. Further, the solid line arrow indicates the kerosene supply pipe, and the broken line arrow indicates the return pipe when kerosene is excessively supplied. Further, reference numerals 7 and 8 are a kerosene inlet and a vent pipe provided in the home tank 1, respectively.

In addition, as a proposal of this kind, the applicant of the present patent application
There is a kerosene supply management system filed in No. 3-296238.

(Problem to be solved by the invention) However, in the above kerosene supply form, the home tank 1
Since the kerosene is supplied to the combustion equipment 5 through the pump 2, the relay tank 3, the door-to-door tank 4, and the kerosene meter 6, there is a problem that the equipment is complicated and the cost is high. Furthermore, although one kerosene meter 6 is installed in each house, the flow rate of kerosene passing through the kerosene meter 6 varies from a minute flow rate to Since the flow rate varies over a wide range up to large amounts, the kerosene meter 6 is required to have instrumental error accuracy over a wide range of flow rates. In particular, when very high instrumental error precision is required even in the micro flow rate range of 1"/h or less,
The models of the kerosene meter 6 are limited and are relatively large. As a result, the cost of the kerosene meter 6 becomes high, and
There was also the problem that depending on where it was installed, it could be difficult to see and get in the way.

This invention solves the above-mentioned problems of the prior art.The purpose of this invention is to display a kerosene flow rate integrated with high accuracy in a wide range of flow rates, and to have a function of supplying kerosene. Our goal is to provide an inexpensive oil server.

[Structure of the invention]

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a feeding means for feeding kerosene from a home tank to an auxiliary tank, and an integration display means for cumulatively displaying the amount of the fed kerosene. An oil server having: a metering chamber having an inlet and an outlet each provided with a check valve; a diaphragm that makes the volume of the metering chamber variable; and a solenoid that drives the diaphragm back and forth; The device is characterized by comprising a pulse oscillation means for driving the solenoid, a detection means for detecting the number of pulses oscillated by the pulse oscillation means, and a flow rate integration display means operated by a detection signal emitted from the detection means. There is.

(Function) According to the above configuration, a pulse is output from the pulse oscillation means in response to the empty amount indication signal of the sub tank, and this output generates a magnetic field in the solenoid to attract the plunger. The diaphragm is displaced in conjunction with this plunger, expanding the volume of the metering chamber by a predetermined amount, and at the same time, the check valve at the inlet opens to suck in kerosene from the home tank. When the plunger reaches the predetermined position, the pulsed output signal is cut off, and the diaphragm returns to its original position together with the plunger.
The kerosene in the metering chamber is supplied to the auxiliary tank by pushing open the check valve on the outlet side. At this time, the check valve in the port is closed, and a predetermined volume of kerosene is discharged from the outlet. below,
The above operation is repeated until the pulse oscillation means receives a full-fill instruction signal from the sub-tank. The number of pulses received by the solenoid during this time is detected by the detection means, and the flow rate integration display means is activated by the detection signal emitted from the detection means.
The total flow rate of kerosene fed to the sub tank is displayed.

(Example) Hereinafter, an example of the present invention will be described in detail using the drawings.

FIG. 6 shows an embodiment of a kerosene supply management system in which the oil server of the present invention is applied to a general residence. In the figure, reference numeral 10 is a home tank, 20 is an auxiliary tank, 30 is an oil server, 60 is a combustion device, and 70 is a transmission controller.

The home tank 10 is installed outdoors, as shown in FIG.
1 and a fuel filler port 12.

The level switch 11 for transmitting the remaining amount sends a signal when the remaining amount of kerosene in the tank 10 decreases to a predetermined amount or less, and is connected to the transmission controller 70 via a cable 13. Further, a strainer 14 is installed at the lower part of the home tank 10, and an oil server 30 is connected via this strainer 14.

The sub tank 20 is installed near the roof of the house A, for example,
It is connected to an oil server 30 via a supply pipe 21 and to combustion equipment (for example, heating equipment) 60 arranged in each room via an indoor piping 22. The supplied kerosene is sent to the combustion equipment 60 in each room using the head. This sub tank 20 has a level switch 23.
(See Figure 7). This level switch 23 sends an "empty level signal" to the oil server 30 when the amount of kerosene in the sub tank 20 decreases, and also sends an "empty level signal" to the oil server 30.
When the tank 0 is filled with kerosene, a "full signal" is sent to the oil server 30.

Next, the configuration of the oil server 30, which is a feature of this embodiment, will be explained with reference to FIGS. 1 to 6. First case 31
An inlet portion 32 connected to the home tank 10 via the supply pipe 15 and an outlet portion 33 connected to the sub-tank 20 via the supply pipe 21 are formed on one side of the tank as shown in FIG. There is. A measuring chamber 34 is formed in the shape of a circular hole at the other end of the first case 31, and a second case 35 is fixed to the outside of this end surface. A through hole 35a having the same inner diameter as the measuring chamber 34 is concentrically formed in the center of the second case 35, and the first case 31
The peripheral edge of a diaphragm 36 is airtightly clamped and fixed between the second case 35 and the second case 35. A solenoid 37 is fixed to the outside of the second case 35, and the end of the plunger 38 of this solenoid 37 is connected to the center of the diaphragm 36 via a pair of pressure receiving plates 39, 40 that sandwich the diaphragm 36. Fixed. Further, a first spring 41 is stretched between the pressure receiving plate 40 and the solenoid 37, and urges the plunger 38 in a direction to protrude from the solenoid 37.

Further, the inlet section 32 and the outlet section 33 are provided with valve seats 32a, 33a and balls 42.43, which are valve bodies, respectively, and a second spring 46 and a second spring 46 whose one end is supported by a stopper 44.45, respectively. Third spring 47
The balls 42 and 43 are respectively placed in the measuring chamber 34 by
A check valve is formed by pressing in a direction away from and a direction towards. Further, the first case 31 is fixed to a fixing plate 49 via screws 48, and a cover 51 is fixed to the fixing plate 49 via screws 50.

Furthermore, screws 52 and 53 are provided on the inner surface of the upper part of the cover 51.
A board 54 is fixed through the board 54, and an LCD 55, which is a flow rate integration display means, is attached to the board 54. Further, on the outer periphery of the solenoid 37, a reed switch contact 56 is provided as a detection means for detecting the number of pulses output from a pulse oscillation circuit (not shown) to drive the solenoid 37.
55. The code 58 is the solenoid 37.
It is an anvil provided in the 37a shown in FIG.
is a code for inputting a pulse to the solenoid 37, and numeral 59 is a name plate.

Next, the level switch 23 attached to the sub-tank 20
The configuration will be explained with reference to FIG. A reserve tank 24 partitioned by a partition wall 20a is provided within the sub-tank 20, and an open first valve seat 25a is provided at the bottom of the partition wall 20a. Also, sub tank 2
A vent hole 26 is attached to the earthen wall of No. 0 so as to communicate with the inside of the tank, and a second valve seat 25b is provided on the inner surface of the tank where the vent hole 26 is attached. Furthermore, an indoor pipe 22 is attached to the lower side wall of the sub tank 20, and a supply pipe 21 is attached to the bottom surface.

In addition, guide rods 27a and 27 are provided in the sub tank 20, respectively.
The first float 28a is guided so as to be raised and lowered by b.
and a second float 28b are provided, and these floats 28a and 28b rise to touch the valve seat 2, respectively.
5a and 25b. Further, in the sub tank 20, there is a first switch 29a that is turned on when the first float 28a descends to point A and opens the valve seat 25a, and a second switch 29a that is turned on when the first float 28a descends to point A and opens the valve seat 25a. a second switch 29b that is turned on when the point is lowered;
This second float 28b floats to the second valve seat 25b.
A third switch 29c is provided which is turned on when the point C near the point C is reached. These switches 29a, 29b, 29c composed of proximity switches etc.
As described later, the drive of the oil server 30 is turned ON.
, OFF. In addition, code 3 in the figure
0a is an outlet for supplying ACIOOV power to the oil server 30.

Next, the operation of the oil server 30 configured as described above will be explained with reference to FIG. 1, FIG. 7, and FIG. 8 which is a functional block diagram. First, the full empty capacity indicating function 81 by the level switch 23 provided in the sub tank 20 will be explained. In FIG. 7, the second float 28b moves up and down according to the level of kerosene in the sub tank 20, and as the kerosene in the sub tank 20 decreases, the second float 28b moves up and down.
When the point is reached, the second switch 29b is turned on and sends a signal to the pulse oscillation circuit 82 provided in the oil server 30, and the pulse oscillated from this pulse oscillation circuit 82 is sent to the solenoid 37 which is the kerosene blowing function 83. Output.

Then, the oil server 30 is driven and the home tank 10
Kerosene is supplied to the sub tank 20 from the auxiliary tank 20. After this oil server 30 is driven for about 10 minutes, the drive of the oil server 30 is stopped and the liquid level of kerosene reaches point D. As long as the oil server 30 and level switch 23 are operating normally, the above operations are repeated and the kerosene level is always between points B and D. During this time, the first float 28a closes the first valve seat 25a due to its buoyancy. If the level of kerosene falls below point B and becomes below point A for some reason, the first float 28a separates from the valve body 25a, and the kerosene in the reserve tank 24 is supplied into the auxiliary tank 20.

At the same time, the first switch 29a is turned on to drive the oil server 30 and supply kerosene from the home tank 10 to the sub tank 20 via the supply pipe 21.

Next, the abnormal operation of the oil server 30 and level switch 23 will be explained. If the second switch 29b is not turned on even if the kerosene level falls below point B, when the kerosene level falls to point A, kerosene is supplied from the reserve tank 24 as described above to prevent the kerosene from running out. At the same time, the first switch 29a is turned on and the oil server 30 is driven for about 10 minutes, supplying kerosene.

At this time, an alarm is issued and displayed by an alarm device or the like to detect an abnormality in the second switch 29b. Also, if the first switch 29a remains in the ON state, an alarm is issued to notify that the oil server 30 is abnormal. Furthermore, even if the kerosene level falls below point B or below point A, the oil server 30
Even if the system does not operate, an alarm will be issued and an abnormality will be displayed. At this time, kerosene is supplied from the reserve tank 24 to prevent kerosene from running out. Further, when the level of kerosene exceeds point D and reaches point C, the third switch 29c is turned on and the oil server 30 is brought to an emergency stop. At the same time, an alarm is issued and an abnormality is displayed. At this time, when the level of kerosene exceeds point C, the second float 28b closes the second valve seat 25b to prevent overflow. Also, when the oil server 30 is being driven for more than a predetermined 10 minutes, an alarm is issued and an abnormality is displayed. Note that in order to drive the oil server 30 again when each of the above abnormalities occurs, it is necessary to press a reset button (not shown).

Next, the operation of the oil server 30 will be explained.

As described above, when the first switch 29a or the second switch 29b is turned on, the empty amount signal of the sub tank 20 is sent to the pulse generator circuit 82 driven by the power rectifier circuit 84.
, a pulse with a preset frequency is output from this pulse oscillation circuit 82, which causes the solenoid 37 to generate a magnetic field and move the plunger 38 towards the first spring 4.
Attract against the urging force of 1. As a result, Branja 3
The diaphragm 36 moves in conjunction with
The valve is pulled against the biasing force of the spring 46 to disengage from the valve seat 32a and open the valve. And from the population department 32 to the weighing room 3
Kerosene is supplied within 4 hours.

When the plunger 38 contacts the anvil 58, the output signal is turned off, and the ball 42 of the inlet portion 32 is pushed by the second spring 46 and contacts the valve seat 32a, thereby closing the valve. At the same time, the magnetic force of the solenoid 37 is cut off, and the diaphragm 36 is moved by a certain stroke toward the first case 31 due to the biasing force of the first spring 41, and the ball 43 provided at the outlet portion 33 is moved toward the third spring 47. The valve is opened by resisting the force and separating from the valve seat 33a. Then, kerosene corresponding to the capacity of the metering chamber 34 determined by the stroke of the plunger 38 is discharged from the outlet portion 33 into the sub tank 20. Thereafter, the same operation is repeated until the pulse oscillation circuit 82 receives a full instruction signal from the level switch 23.

Next, the magnetic flux leaking from the magnetic field generated by the pulses output to the solenoid 37 enters the reed switch contact 56, and the contact 56 is activated by the same number of pulses, and this signal converts the volume per pulse into the amount of passage. The data is manually inputted to the LCD 55, which is an integration display function 86, via the flow rate conversion function 85, and the flow rate is integrated and displayed on the LCD 55. The communication function 8 displays the flow rate accumulated by this LCD 55.
7 to an automatic meter reading function 88 located at a remote location.

According to this embodiment, the meter function for metering and selling oil server 30 and the pump-up function for feeding kerosene from the home tank 10 to the auxiliary tank 20 are integrated, making the kerosene management system compact and simple. can be made cheaper. Moreover, since the flow rate of kerosene passing through the oil server 30 is almost constant, the instrumental error accuracy of the meter can be improved.

In the above embodiment, the oil server 30 installed in a kerosene supply management system for general housing as shown in FIG. 6 has been described, but it can also be applied to housing complexes as shown in FIG. 9. In the figure, the same or equivalent parts as in FIG. 6 are denoted by the same reference numerals and explanations are omitted. In this system, in order to be able to measure the amount of kerosene consumed in each room and bill the kerosene fee, a door-to-door tank 20 having the same configuration as the sub-tank 20 shown in the previous embodiment is installed in each room.
b, and an oil server 30 having the same configuration. In addition, since the amount of kerosene is larger than in a typical house, and there is a risk of fire, in order to prevent this, a shutoff valve 90 is installed to shut off the supply path 21 in the event of a kerosene leak. In this case as well, the same effects as in the previous embodiment can be obtained.

Further, in the above embodiment, a case has been described in which the number of pulses is detected by the reed switch contact 56, but the means for detecting the pulse number is not limited to this. Furthermore, the operating time of the oil server 30 during normal operation is not limited to 10 minutes. Furthermore, the side wall of the metering chamber 34 on the first case 31 side is tapered so that the width becomes narrower toward the bottom, and the outlet portion 3
By setting the position of the opening on the measuring chamber side of No. 3 higher than the upper end of the pressure receiving plate 39, it is possible to prevent air bubbles from accumulating in the measuring chamber 34.

〔Effect of the invention〕

As explained in detail above, according to the present invention, the function of a meter to measure and sell kerosene and the function to feed kerosene from the home tank to the auxiliary tank are integrated into the oil server. The management system can be made smaller, simpler, and less expensive, and the accuracy of the meter's error can be improved over a wide range of flow rates.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view showing one embodiment of an oil server according to the present invention, FIGS. 2 and 3 are a front view and a plan view of FIG. 1, respectively, and FIG. 5 is a plan view with the cover removed from FIG. 1, FIG. 6 is a perspective view showing a general residential kerosene supply management system to which the present invention is applied, and FIG. 7 is a sub-section of FIG. 6. An explanatory diagram showing the level switch installed in the tank, FIG. 8 is a functional block diagram of this embodiment,
FIG. 9 is a perspective view showing a kerosene management and supply system for apartment complexes to which the present invention is applied, and FIGS. 10 and 11 are explanatory diagrams showing conventional kerosene supply management systems, respectively. DESCRIPTION OF SYMBOLS 10... Home tank, 20... Sub tank, 30... Oil server, 32... Inlet part, 33... Outlet part, 34... Measuring chamber, 36... Diaphragm, 37. ...Solenoid, 42.43...Ball (check valve), 55...LCD (flow rate integration display means), 56...
Reed switch contact (detection means), 82...pulse oscillation circuit.

Claims (1)

[Claims] An oil server having a feeding means for feeding kerosene from a home tank to an auxiliary tank, and a totalizing display means for cumulatively displaying the amount of the fed kerosene, each having an inlet provided with a check valve. A measuring chamber having a section and an outlet section, a diaphragm that makes the volume of this measuring chamber variable, a solenoid that drives this diaphragm back and forth, a pulse oscillation means that drives this solenoid, and the number of pulses that this pulse oscillation means oscillates. What is claimed is: 1. An oil server comprising: a detection means for detecting the amount of water; and a flow rate integration display means operated by a detection signal emitted from the detection means.