JPH0433380Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a combustion air cooling device for a gas engine.

[Prior art] Conventionally, the exhaust gas from a gas engine installed and operated indoors after combustion is released into the outdoor atmosphere from a chimney through a muffler, etc. However, the combustion air is released into the indoor air in consideration of explosion noise, etc. The air is passed through a filter, sucked in by a supercharger, etc., and sent to a gas engine where it is used as combustion air. For this reason, indoor air is ventilated with outdoor air using ventilation fans, etc., and air conditioners are installed indoors to prevent the temperature of indoor air and combustion air from rising.

[Problems to be solved by the invention] When the gas engine installed indoors is in operation, it is a heating element, so the gas engine body is cooled with air or cooling water, and the indoor air is cooled as described above. In the same way, ventilation fans are used to ventilate the indoor and outdoor air to prevent the indoor air temperature from rising, but if the gas engine is operated for a long time under overload, the ventilation cannot be done in time, causing the indoor air temperature to rise. The temperature of the combustion air supplied to the gas engine may exceed the permissible temperature (approximately 40°C). If this raised air is sucked in by a supercharger, etc., mixed with fuel gas as combustion-like air for a gas engine, and sent into the cylinder and a predetermined pressure is applied by the piston, the piston will explode and burn before it reaches the designated explosion position. It acts as a reaction force against the piston.
As a result, the piston comes to a sudden stop due to this reaction force, which may cause a serious accident in the gas engine.

Therefore, the present invention provides a device that cools only the indoor combustion air supplied to the gas engine to within the permissible temperature range (approximately 25°C to 40°C) while maintaining the indoor air temperature as before.

[Means for solving the problems] The gas engine combustion air cooling device of the present invention has the following features:
In the first and second adsorption refrigerators, each tank is filled with a solid adsorbent that has absorbed a certain amount of refrigerant liquid, and a first tank in which a circulation pipe is disposed;
The first and second adsorption refrigeration systems are composed of a second tank in which a circulation pipe is installed, and a vacuum-sealed vapor flow path that communicates the first tank with the second tank. A switching valve is provided that operates in synchronization with the inlet and outlet portions of the circulation pipes disposed in the first tank and the second tank of the machine. A cooling tower for cooling the cooling water circulated through the adsorption refrigerator is installed outdoors, and the cooling tower is connected to the switching valves of the first and second tanks of the first and second adsorption refrigerators. Cooling water circulation piping will be installed for cooling each tank.

A hot water circulation pipe after cooling the gas engine is provided which is connected from the circulating cooling water port of the gas engine to the switching valve of the first tank of the first and second adsorption refrigerators.
A radiator is provided in the combustion air intake path of the gas engine, and cold water circulation piping for cooling the combustion air is provided from the radiator to the switching valves of the second tanks of the first and second adsorption refrigerators.

With the above configuration, hot water after cooling the gas engine is circulated to the first tank in the adsorption refrigerator, cold water is obtained from the second tank, and this cold water is provided in the combustion air intake path of the gas engine. This device cools the combustion air of a gas engine by circulating it through the radiator.

[Function] In the gas engine combustion air cooling system of the present invention, first, as a regeneration process, hot water (approximately 75°C to 82°C) that cooled the gas engine is heated through hot water circulation piping to the vacuum-sealed adsorption refrigerator. By circulating the refrigerant in one tank, the refrigerant liquid absorbed by the solid adsorbent filled in the first tank boils and becomes refrigerant vapor, which moves into the second tank through the vapor flow path.

During this period, cooling water (approximately 30°C to 35°C
℃) to condense the refrigerant vapor.

After the above-described regeneration process is operated for a predetermined period of time, the cooling water that was being circulated in the second tank is switched to and circulated in the first tank as an adsorption process. As a result, the solid adsorbent filled in the first tank acts to absorb refrigerant vapor, and the refrigerant vapor that condensed in the second tank in the above regeneration process evaporates again and becomes refrigerant vapor, which flows through the vapor flow path. It returns to the first tank, is absorbed by the solid adsorbent, and is reduced to a refrigerant liquid. During this time, the liquid in the circulation pipe installed in the second tank becomes cold water (approximately 7°C to 12°C) due to the heat of vaporization, and this is passed through the cold water circulation pipe of the radiator installed in the combustion air pipe for the gas engine. This is used to cool the combustion air of the gas engine.

By synchronizing and alternately operating the regeneration process and adsorption process using the first and second adsorption refrigerators, cold water can be obtained alternately from the second tank.

[Example] An embodiment of the present invention will be described with reference to FIG.

A first tank 1 is filled with a solid adsorbent 1b that has absorbed a certain amount of refrigerant liquid 1a, and a circulation pipe 1c is installed in the first tank 1, and a circulation pipe 2c is installed in the tank. Two sets of adsorption refrigerators, a first set 4A and a second set 4B, are provided in which the second tank 2 and the first tank 1 and the second tank 2 are communicated with each other by a vapor flow path 3 and sealed in a vacuum. A first port 5 is provided at the inlet/outlet portion of the circulation pipes 1c and 2c disposed in the first tank 1 and the second tank 2, respectively, of the first set 4A and second set 4B of adsorption refrigerators.
Switching valves 5 and 6 are installed, which have connection ports through which circulating fluid can flow from a and 6a and second ports 5b and 6b, and whose first and second ports are switched and actuated in synchronization. A cooling tower 9 for cooling the cooling water circulating in the first tank 1 and the second tank 2 of the adsorption refrigerator of the first set 4A and second set 4B is arranged outdoors, etc., and the cooling water circulation piping is connected to the cooling tower 9 from the cooling tower 9. 11 is arranged,
It is connected to the second ports 5b, 6b of the switching valves 5, 6 attached to the inlet/outlet portions of the first tank 1 and second tank 2 of the first group 4A and second group 4B of adsorption refrigerators. A hot water circulation pipe 12 is arranged from the circulation cooling water port 10a of the gas engine 10, and the first set 4A and the second set 4B are connected to each other.
It is connected to the first port 5a of the switching valve 5 attached to the inlet/outlet portion of the first tank 1 of the adsorption refrigerator. A radiator 14 is installed in the combustion air intake path 13 of the gas engine 10.
A cold water circulation pipe 16 is provided from the radiators 14 and 15, and the first set 4A and the second set 4A are connected to each other.
It is connected to the first port 6a of the switching valve 6 attached to the inlet/outlet portion of the second tank 2 of the adsorption refrigerator of group 4B.

The apparatus of the present invention is constructed as described above and operates as described below. The case where the first adsorption chiller 4A is carrying out the regeneration process and the second adsorption chiller 4B is carrying out the adsorption process is called the first system and is shown by the solid line in Fig. The ivy regeneration process will be explained.

The hot water that cooled the gas engine 10 is passed through the hot water circulation pipe 12 to the first switching valve 5 provided in the first tank 1.
Circulation pipe 1c arranged in the first tank 1 through the port 5a
The refrigerant liquid 1 is absorbed by the solid adsorbent 1b filled in the first tank 1 by circulating the liquid inside the first tank 1.
a boils to become refrigerant vapor and moves into the second tank 2 through the vapor flow path 3. During this period, the cooling water cooled by the cooling tower 9 is fed into the second tank 2 through the second port 6b of the switching valve 6 provided in the second tank 2 through the cooling water circulation pipe 11. The refrigerant vapor that has moved into the second tank 2 is condensed by circulating through the provided circulation pipe 2c.

Next, the adsorption process will be explained using the second adsorption refrigerator 4b.

The cooling water cooled by the cooling tower 9 is transferred to the second adsorption refrigerator 4B through the cooling water circulation pipe 11.
The solid adsorbent 1b is filled in the first tank 1 by circulating through the circulation pipe 1c arranged in the first tank 1 through the second port 5b of the switching valve 5 provided in the tank 1. has the effect of absorbing refrigerant vapor, and the refrigerant vapor that was previously condensed in the second tank 2 in the regeneration process is
It evaporates again and becomes refrigerant vapor, returns to the first tank 1 through the vapor flow path 3, is absorbed by the solid adsorbent 1b in the first tank 1, is cooled by cooling water in the circulation pipe 1c, and becomes refrigerant liquid 1a. Give back.

During this period, the liquid in the circulation pipe 2c disposed in the second tank 2 becomes cold water due to the heat of vaporization when the refrigerant vapor condensed in the previous regeneration process evaporates again. This cold water is transferred to the radiator 1 provided in the combustion air intake path 13 of the gas engine 10 via a cold water circulation pipe 16 connected to the first port 6a of the switching valve 6.
It will be distributed on 4,15.

The first system in which the regeneration process by the first adsorption refrigerator 4A and the adsorption process by the second adsorption refrigerator 4B are performed operate synchronously.

Next, the broken line shown in FIG. 1 indicates a second system in which the first adsorption refrigerator 4A is performing an adsorption process and the second adsorption refrigerator 4B is performing a regeneration process.

As described above, by operating the first system and the second system synchronously and alternately using the first set 4A and the second set 4B of adsorption refrigerators, the first set 4A and the second set 4B
Circulation pipe 2 installed in the second tank 2 of the adsorption refrigerator
The liquid in c can be turned into cold water. Combustion air from the gas engine 10 is sucked in by a suction blower 17 provided in a combustion air suction passage 13 through a filter 18, and the combustion air is passed through radiators 14 and 15 in which the cold water is circulated. is cooled and sent to the gas engine.

Although the apparatus of the present invention has been explained above with reference to FIG. 1, it goes without saying that the circulating fluid phase shift pump, temperature sensor, flow rate regulating valve, etc. are required in FIG.

[Effect of the invention] The combustion air of a gas engine operating indoors can be cooled by the device of the present invention, so there is no need to cool the entire indoor air, and cooling equipment and the like can be cooled. This eliminates the need for various power equipment to operate the system, making it highly economical.

[Brief explanation of the drawing]

FIG. 1 is a system diagram showing an embodiment of the present invention. 4A, 4B...First and second adsorption refrigerators, 1
...First tank in the above 4A and 4B, 1a... Refrigerant liquid in the first tank, 1b... Solid adsorbent in the first tank, 1c...
...Circulation pipe in the first tank, 2...Second tank in the above 4A and 4B, 2c...Circulation pipe in the second tank, 3...Above 4
Steam flow passage in A, 4B, 5, 6...Switching valve, 5
a, 6a...first port, 5b, 6b...second port, 9
...Cooling tower, 10...Gas engine,
11...Cooling water circulation piping, 12...Hot water circulation piping, 13...Combustion air suction path, 14, 15...
Radiator, 16...Cold water circulation piping, 17...Blower, 18...Filter.

Claims (1)

[Scope of utility model registration request] In the first and second adsorption refrigerators, each tank is filled with a solid adsorbent that has absorbed a certain amount of refrigerant liquid, and a first tank in which a circulation pipe is disposed;
The first and second adsorption refrigeration systems are comprised of a second tank in which a circulation pipe is installed, and a vacuum-sealed vapor flow path that communicates the first tank with the second tank. A switching valve is installed at the entrance and exit of the circulation pipes installed in the first tank and the second tank of the machine, a cooling water cooling tower, and the cooling water is supplied to the first and second adsorption type refrigeration from the cooling tower. Cooling water circulation piping for cooling each tank connected to the switching valves of the first tank and second tank of the engine, and the above-mentioned first,
A hot water circulation pipe after cooling the gas engine connected to the switching valve of the first tank of the second adsorption refrigerator, a radiator provided in the combustion air suction path of the gas engine, and a radiator connected to the first and second tanks of the second adsorption refrigerator. A gas engine combustion air cooling device comprising a cold water circulation pipe for cooling combustion air connected to the switching valve of the second tank of the second adsorption refrigerator.