KR200212629Y1 - Auto changing system for gas vessel - Google Patents

Abstract

The present invention relates to an automatic switching device that detects the absence of gas when the gas stored in the gas container is consumed below a predetermined pressure and needs to be replaced with a gas-filled container, and is automatically switched to a spare gas container to supply gas. More particularly, the present invention relates to a gas container automatic switching device which can reduce the number of parts and ensure the reliability of operation by adopting a switching valve as a three-way valve.

The present invention is to control the entire stroke, the display unit, and a controller that the gas alarm and a plurality of control switch circuits therein; Connecting pipes on both sides respectively connected to the external gas container; On-off valve for selectively opening and closing the connecting pipes on both sides; A motor for driving the on / off valve; A gas supply pipe for supplying gas and connected to the connection pipes on both sides of the gas supply pipe; And a pressure gauge for measuring the gas pressure inside the gas supply pipe, the pressure gauge being connected through a branch pipe and connected to a controller, wherein the connection pipes of both sides connected to the external gas container are connected to each other. (32) 32 'and the gas supply pipe 35 are connected to one three-way valve 33, the controller 31 and the pressure gauge 36 to selectively open and close the three-way valve (33) One drive motor 34 is connected to the circuit is characterized in that the configuration is installed on the three-way valve (33).

Description

Auto changing system for gas vessel

The present invention relates to an automatic switching device that detects the absence of gas when the gas stored in the gas container is consumed below a predetermined pressure and needs to be replaced with a gas-filled container, and is automatically switched to a spare gas container to supply gas. More particularly, the present invention relates to a gas container automatic switching device which can reduce the number of parts and ensure the reliability of operation by adopting a switching valve as a three-way valve.

LPG, a natural gas such as LNG, or tank storage supply, is rapidly increasing in use as a substitute for briquettes. In particular, gas is used not only as cooking fuel but also as heating fuel in gas boilers, etc. Therefore, a large amount of gas is consumed in winter. Gas boilers are concerned with the exhaustion of fuel, because in large apartment complexes, city gas pipes are buried and fuel is supplied directly from large-scale stored gas tanks, gas consumption is measured according to the amount used, and the fee is charged as indicated on the meter. There is nothing to use. However, small complexes such as single-family houses or townhouses use gas containers delivered from gas stations. The gas container is usually 20 to 50 kg of gas, and the stored gas is exhausted by using a gas boiler, a gas stove, or the like. Conventionally, since there is no means for the user to check the amount of gas remaining in the gas container, the user should contact the filling station to check the gas supply and supply a new gas only after the gas runs out while the gas boiler or the stove is in use.

In order to alleviate this inconvenience, two gas containers can be connected to each other at the same time by connecting pipes, but there is a safety problem, and each gas container is connected to each other by switching the valves of the gas container alternately. Pressure-sensing manual gas changers are used. Even if the gas is supplied from two gas containers, the gas can be used for a long time, but when the gas is exhausted, the user cannot deliver the gas container directly to the gas station after the gas runs out. There was an inconvenience to ask.

In consideration of these problems, the applicant's registered patent No. 262066 detects the absence of gas when the gas stored in the gas container is consumed below a predetermined pressure and needs to be replaced with a gas filled container. Automatically change gas supply and supply gas to gas container with address only transmitter which can notify user or gas supplier located in remote place of gas supply change condition or gas leakage, no gas A switching device is proposed.

Referring to FIG. 1 schematically, the automatic switching device 10 includes a controller 11 for controlling the entire stroke of a city and having a display unit and a gas alarm and a plurality of control switch circuits therein; Each of which is connected to the external gas container, the both ends are in communication with each other and the first valve handle 12 is provided in the middle portion is located in the opposite position of the first connecting valve 13 and the first connecting valve and the second valve in the middle portion A second connecting valve 15 provided with a handle 14; The controller and the electric wire are connected to each other in a state of being blocked by the explosion-proof plate 16, and the first valve handle 12 is connected in series with the upper side of the first valve handle 12 of the first connecting valve 13. A first circuit 17 for opening / closing on / off and an upper side of the second valve handle 14 of the second connecting valve 15 to open / close the second valve handle 14 on / off Secondary circuit 18; As for supplying gas, both ends communicate with each other, and a free end of the first connection valve 13 is connected to one end, and a free end of the second connection valve 15 is connected to the other end and communicated downward. The gas supply pipe 19 is formed; Pressure switch 20 for measuring the gas pressure inside the gas supply pipe 19 to measure the pressure through the branch pipe and the wire is connected to the controller 11 in a state in which the wire is blocked from the outside through the explosion-proof plate 16. ; And an address transmission transmitter (not shown) for notifying an operation state through the telephone line of the gas container automatic switching device.

However, the automatic switching device includes a first valve handle 12, a first connection valve 13, and a first circuit breaker 17 for controlling a gas container on one side with a pressure switch 20 interposed therebetween, and the other side. The second valve handle 14, the second connecting valve 15, and the second circuit breaker 18 for controlling the gas container of the gas are doubled, so that the number of parts increases, thereby making the configuration complicated and manufacturing. As the price increases, in particular, the operation of both sides must be made precisely, and there is a problem in that the reliability of the product is lowered, such as concern for safety accidents when there is an abnormality on either side.

That is, there was a closed end consisting of two valve handles, two connecting valves and two circuit breakers.

The present invention has been devised to solve the above problems, the object of the present invention is to detect the absence of gas when the gas stored in the gas container is consumed below a predetermined pressure and need to be replaced with a gas-filled container In the automatic switching device that automatically transfers gas to the gas container, by automatically switching the gas containers on both sides to a three-way valve, which is a single switching valve, the number of parts is greatly reduced, thereby simplifying the structure and thus reducing the manufacturing cost. In addition, to provide an automatic gas container switching device that can ensure the reliability of the operation.

Gas container automatic switching device of the present invention for achieving the above object, the control unit for controlling the entire stroke, the display unit, and a gas alarm and a plurality of control switch circuits therein; Connecting pipes on both sides respectively connected to the external gas container; On-off valve for selectively opening and closing the connecting pipes on both sides; A motor for driving the on / off valve; A gas supply pipe for supplying gas and connected to the connection pipes on both sides of the gas supply pipe; And a pressure gauge for measuring the gas pressure inside the gas supply pipe, the pressure gauge being connected through a branch pipe and connected to a controller, wherein the connection pipes of both sides connected to the external gas container are connected to each other. And a gas supply pipe communicating with one three-way valve, the automatic motor selectively opening and closing the three-way valve.

1 is an overall configuration diagram for explaining a conventional automatic switching device,

2 is a front view showing an automatic switching device according to the present invention,

FIG. 3 is a schematic side view of FIG. 2.

<Explanation of symbols for the main parts of the drawings>

30: automatic switching device 31: controller

32,32 ': Connector 33: 3-way valve

34: drive motor 35: gas supply pipe

36: pressure gauge 37: flexible tube

Hereinafter, the gas container automatic switching device of the present invention will be described in detail with reference to the accompanying drawings.

The present invention detects gas exhaustion or abnormality generated during gas supply and automatically opens gas valve to supply gas when the spare gas container is connected, and informs the status through address transmission transmitter, gas leakage, etc. It is a device that can notify the user.

In the gas container automatic switching device 30 according to the present invention, referring to the front view of FIG. 2 and the schematic side view of FIG. 3, a controller 31 including an on / off switch and a wiring device for controlling the entire stroke is provided. And connecting pipes 32 and 32 'on both sides connected to the connecting pipe of the external gas container, respectively. A three-way valve (33) which is an on / off valve communicating between both connecting pipes (32) and (32 ') to selectively open and close the connecting pipes (32, 32') on both sides; A driving motor 34 installed in the three-way valve 33 to drive the three-way valve; A gas supply pipe 35 connected to the three-way valve 33; And a pressure gauge 36 for measuring the gas pressure inside the gas supply pipe 35 and connected through a branch pipe, and a wire connected to the controller 31.

The three-way valve 33 has a structure in which an ordinary L port (not shown) is formed therein to communicate the connecting pipes 32 and 32 ', the gas supply pipe 35, and the pressure gauge 36 on both sides. .

In addition, the controller 31 is composed of an address transmission transmitter (not shown) for notifying gas replacement or gas abnormality, and a gas alarm (not shown) for detecting gas leakage, and the like. A plurality of switch circuits and the like that are controlled on and off to operate in accordance with the power applied to the gauge 36 are included.

The connecting pipes 32 and 32 'are installed in a symmetrical position with respect to the gas supply pipe 35, and the internal structure is essentially the same. However, the connecting pipe 32 is connected to the gas container 1 of the gas container 1, the connecting pipe 32 'of the gas container 2.

The drive motor 34 is a drive motor configured to operate the three-way valve 33 in both directions, and is opened and closed on and off in accordance with a control signal from the controller 31 to selectively open and close the connection pipes 32 and 32 '. It acts to open and close.

The gas supply pipe 35 is for supplying gas to a gas boiler or a gas stove. The gas supply pipe 35 is connected to the branch pipe of the three-way valve 33 and two gas containers are connected to both sides, so that the total gas supply amount is increased, so that the gas can be used for a long time. There is an advantage to that.

The pressure gauge 36 serves to measure and detect the gas pressure passing through the gas supply pipe 35. That is, when the pressure reaches the first predetermined pressure (upper limit reference pressure) set in the pressure gauge 36 or more, it is recognized as a gas pressure occurrence and outputs an electrical signal.If the pressure is less than the second predetermined pressure (lower limit reference pressure), the gas is almost exhausted. It is recognized that the pressure has been lowered and the corresponding electrical signal is also output. For this purpose, the pressure switch 36 is provided with an indicator hand for setting an upper limit reference pressure and a lower limit reference pressure.

A power supply line is connected to the pressure gauge 36 and the drive motor 34 to supply power for operating them. These power supply lines are installed wrapped around the flexible pipe 37 to exhibit an explosion-proof pipe function to prevent accidents during gas leakage.

The present invention configured as described above is as follows.

When powered, each device enters standby. In this state, the user uses gas, and when the gas stored in the gas container decreases, the gas pressure decreases accordingly. Detection of the reduced gas pressure is made via pressure gauge 36. That is, when the gas pressure decreases below a predetermined value, it is possible to detect this by operating the setting switch circuit of the pressure gauge. This signal outputs a signal that opens the preliminary gas reservoir when the gas pressure is low pressure, and thus a new gas is supplied. At the same time, the gas container, which is used up first and has exhausted gas, is closed. The opening of the preliminary gas container and the closing of the used gas container are simultaneously performed by the three-way valve 33 operated by the drive motor 34.

Therefore, while the new gas is supplied to the gas supply pipe 35, the gas is normally supplied. At this time, the controller 31 continuously measures the pressure from the pressure gauge 36.

If it is determined that the gas discharged from the new gas container is below the lower limit reference pressure, it is determined that all of the gases are empty, the current state is maintained and an alarm is sounded to notify the user of an abnormality.

That is, when the gas of the gas container connected to the heat pipe 32, which is one side, is exhausted, the pressure is measured through the pressure gauge 36 and the measurement signal drives the driving motor 34. Then, the three-way valve 33 The internal L port is changed to close the supply pipe 32 and at the same time open the connection pipe 32 'connected to the gas container on the other side.

Therefore, the gas of the new gas container on the other side is supplied through the connecting pipe 32'-three-way valve 33-gas supply pipe 35.

As described above, according to the present invention, when the gas stored in the gas container is consumed under a predetermined pressure and needs to be replaced with a container filled with gas, it detects the absence of gas and automatically switches to a preliminary gas container to supply the gas. It is possible to notify the gas supplier of the changed supply status or abnormal condition. In particular, both the connecting pipe and the gas supply pipe connected to the external gas container are connected to one three-way valve, and the three-way valve is selectively opened and closed. The configuration including a single drive motor to reduce the number of parts significantly, thereby simplifying the structure, thereby reducing the manufacturing cost and further has the effect of ensuring the reliability of operation.

Although the present invention has been described in detail only with respect to the embodiments described, it will be apparent to those skilled in the art that the present invention may be modified or changed within the spirit and scope of the present invention. something to do.

Claims (1)

A controller for controlling the whole stroke and having a display unit and a gas alarm and a plurality of control switch circuits therein; Connecting pipes on both sides respectively connected to the external gas container; On-off valve for selectively opening and closing the connecting pipes on both sides; A motor for driving the on / off valve; A gas supply pipe for supplying gas and connected to the connection pipes on both sides of the gas supply pipe; And a pressure gauge for measuring a gas pressure inside the gas supply pipe and connected through a branch pipe and connected with a controller. Both connecting pipes 32 and 32 'and the gas supply pipe 35 connected to the external gas container are connected to one three-way valve 33 to selectively open and close the three-way valve 33. And one drive motor (34) connected in circuit with the controller (31) and the pressure gauge (36) are installed on the three-way valve (33).