JPH0665741U - Gas leak detection device inside and outside the gas furnace - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention provides a device for early detection of a raw gas leak in a gas furnace by a gas leak alarm provided outside the furnace, and a suction port in the furnace used for gas leak detection. The purpose of the present invention is to make the structure of the steam separation port interposed between the suction pumps outside the furnace appropriate for the gas leak alarm. According to claim 1 of the present invention, a suction port 2 is provided inside a gas furnace 1, and a pipe line 3 connected to the suction port 2 is connected to a suction pump 6 having a steam separation port 4 interposed therebetween. The gas leak detector is characterized in that the discharge side pipe 7 of the suction pump 6 is connected to a gas leak alarm 8 installed around the outside of the furnace. The device of claim 1 is further developed by making the separation pot 4 suitable for a gas leak alarm as described above.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a gas leak detection device inside and outside a gas furnace.Unlike the conventional device, if the leak of the gas supplied to the processing furnace that uses gas as fuel is detected inside the furnace, it can be detected early even if it is a small amount. However, if there is a leak in the supply line outside the furnace leading up to the furnace, if it is around the furnace, it is a device that is configured to be able to detect it in the conventional manner.

[0002]

[Prior art]

 If there is a gas leak inside a gas furnace that uses gas or vaporized gas as a heating fuel, this may lead to a serious accident resulting in personal injury.Therefore, it is necessary to install a device that can detect the gas leak as early as possible. I won't. However, the discovery of gas leaks inside the furnace will be delayed. The main reason for this is that gas leak alarms that detect gas that has leaked to the atmosphere have been generally used, and even if a gas leaks in the furnace, it cannot be detected until it leaks out of the furnace. is there.

There are various causes of gas leakage in the furnace. For example, when the operation of the furnace is stopped, it is a general rule to close the gas supply cock around the furnace and the main tap, but inadvertently close the cock. If you forget it, raw gas is supplied to the furnace at the next ignition, and this raw gas fills the furnace, and there is a danger of a large explosion with ignition. There is a risk of causing damage such as damage to the heat treatment material and the furnace body. Also, even if you do not forget to close it, it will go out when there is a low heat such as in the early stage of ignition, and you will have to expel raw gas from the furnace before re-ignition. A gas leak accident resulting from the above may cause personal injury as described above, and it is impossible to completely prevent accidental accidental mistakes.

[0003]

[Problems to be solved by the device]

 According to the first aspect of the present invention, the air in the furnace is constantly sucked by the suction pump and the dry air without drain is supplied to the gas leak alarm outside the furnace, and if there is a gas leak in the furnace, The purpose of the invention is to provide a device capable of immediate detection, and the invention of claim 2 is to make the gas-water separation pot, which is a requirement of the invention of claim 1, into an appropriate structure for a gas leak alarm. is there.

[0004]

[Means for Solving the Problems]

 According to the first aspect of the present invention, a suction port is provided inside the gas furnace, and a pipe line connected to the suction port is connected to a suction pump having a steam separation port and installed outside the furnace. However, the present invention relates to a gas leak detection device inside and outside a gas furnace, characterized in that the discharge side pipe of the suction pump is connected to a gas leak alarm installed around the outside of the furnace.

According to a second aspect of the present invention, the air / water separation pot is composed of a closed air / water separation chamber and a heat chamber, and a pipe pipe line connected to the suction port is passed through the air / water separation chamber. In addition to the above, an overflow pipe is installed to store the drain accumulated in the chamber higher than the lower end of the inflow pipe line and discharge the excess water. The pipe which is opened above the water and forms a heat receiving portion in the heat chamber, and which is connected to the suction side of the suction pump is arranged, and the heating portion is provided with a heating device. It relates to a gas leak detection device inside and outside the gas furnace.

[0006]

[Action]

 The invention of claim 1 has a special structure in which the suction port 2 of the suction pump 6 is provided in the furnace, and the discharge side pipe of the pump is connected to the gas leak alarm device outside the furnace, so that gas leak in the furnace can be promptly performed. In addition to the effect that can be detected, there is an effect that gas leak detection can be detected under almost equal conditions regardless of the environmental temperature in the furnace surrounding the suction port. The invention of claim 2 has an effect of further equalizing the sensing conditions.

[0007]

【Example】

 The accompanying drawings show an embodiment of the present invention, FIG. 1 is a block diagram of the invention of claim 1, and FIG. 2 is a schematic diagram of the invention of claim 2.

FIG. 1 is a block diagram of a detection device according to claim 1 of the present invention, in which a gas furnace 1 heated by using a gas fuel or a gasified fuel as a fuel A steam / water separation port 4 is provided between a pipe line 3 connected to a suction port 2 that constantly sucks a part of the suction pipe 5 and a suction pipe 5 of a suction pump 6 outside the furnace, and a discharge pipe 7 of the suction pump 6 is provided. And is sent to the gas leak alarm 8.

According to the apparatus of this embodiment, some of the air inside the gas furnace or the combustion gas is sucked by the suction pump, and when there is a gas leak in the furnace, the gas leak warning Since it is detected by the detector and notified by an alarm sound to shut off, gas leak countermeasures can be taken promptly and rapidly.

FIG. 2 shows a concrete embodiment of the invention according to claim 2 of the present invention, in which a single water / water separation pot 4 is divided into upper and lower parts by a partition wall 12 and hermetically closed. And separated into the heat chamber 14. The pipe line 3 connected to the suction port 2 is passed into the air / water separation chamber 13 up to near the bottom, and the separated water D accumulated in the separation chamber 13 is stored higher than the lower end of the pipe line 3. Excess water is drained to the outside by an overflow pipe P. The heat chamber 14 is provided with a pipe 5 opening from the partition wall 12 to the separated water D of the steam separation chamber 13, and a heat receiving portion 5 a such as a coil winding is formed in the heat chamber 14 to form the heat chamber 14 in the heat chamber 14. And communicates with the suction side of the suction pump 6. A light bulb L is hung on the heat receiving portion 5a as a heating device for raising the dew point of the pipe.

The present embodiment constitutes a specific example of the steam / water separation pot 4 of the device relating to the apparatus of claim 1, and a steam / water separation chamber 13 in which one steam / water separation pot 4 is sealed by a partition wall 12 is provided. The heat chamber 14 which is not hermetically sealed and is formed as described above. The dew points of the air, combustion gas and raw gas components passing through the pipe 5 of claim 1 are increased, and the gas is discharged from the discharge side of the suction pump 6. The leak alarm 8 can always be supplied under almost the same conditions to issue a gas leak alarm.

[0012]

[Effect of device]

 According to the first aspect of the present invention, as has been clarified by the action and the embodiment already described, the gas leak which is difficult to detect because it is inside the gas furnace is sucked from the inside of the furnace by the suction pump. It will be configured to supply to the alarm device, enabling early detection of gas leakage inside the furnace. The invention of claim 2 provides a steam-water separation pot.

With the special construction as in the embodiment described in the paragraph (2), the gas leak alarm can be detected from the discharge port of the suction pump under almost the same conditions regardless of whether the temperature of the furnace is high or low. In addition, gas leaks from gas supply pipes, cocks, etc. located outside the furnace can be detected by a gas leak alarm installed around the gas furnace as usual.

[Brief description of drawings]

 The attached drawings show an embodiment of the present invention,

1 is a block diagram of the device of claim 1;

FIG. 2 is a specific configuration diagram of the device of claim 2;

[Explanation of symbols]

1 gas furnace, 2 suction ports, 3 pipe lines, 4
Air / water separation pot, 5 suction pipes, 6 suction pump,
7 discharge pipe, 8 gas leak alarm, 12 bulkhead,
13 air / water separation chamber, 14 heat chamber, D overflow water, P overflow pipe

Claims (2)

[Scope of utility model registration request] 1. A suction port is provided inside a gas furnace, and
The pipe line connected to the suction port is connected to a suction pump with a steam separation port installed outside the furnace, and the discharge side pipe of the suction pump is connected to a gas leak alarm installed outside the furnace. A gas leak detection device inside and outside a gas furnace, characterized in that 2. A steam / water separation pot is composed of a sealed steam / water separation chamber and a heat chamber, and a pipe pipeline connected to the suction port is introduced into the steam / water separation chamber and accumulated therein. An overflow pipe is installed to store the drain higher than the lower end of the passage pipe line and discharge excess water.
In the heat chamber, a pipe opened to above the separated water in the air-water separation chamber that is closed, and a heat receiving portion is formed in the heat chamber, and then a pipe that communicates with the suction side of the suction pump is arranged, the heating device is provided in the heat receiving portion. The gas leak detection device inside and outside the gas furnace according to claim 1, further comprising: