JPH04287884A - air compressor equipment - Google Patents

Abstract

PURPOSE:To dispense with the stop of air compressor equipment at the time of maintenance by forming such structure as to use a plant air compressor and a control air compressor in common so as to enable the optimum disposition in a narrow installation space and to facilitate air supply piping route planning. CONSTITUTION:An air compressor 1 is formed of three air compressors A, B, C connected at the outlets thereof to a communicating pipeline 2, and air drums 3 and dehumidifying devices 4 are provided two each. The operation of the air compressor 1 is selected into rotating operation by the switching of automatic valves 5 at the air compressor outlets, and in the case of using only plant air at the time of periodic inspection or the like of the plant, dehumidifying device inlet valves 6 are totally closed and by-pass valves 7 are fully opened. At the normal time, that is, the plant operating time, control air can be supplied by leaving the dehumidifying device inlet valves 6 in the fully opened state and the by-pass valves 7 in the totally closed state. In the case of requiring the maintenance of the air drums 3, dehumidifying devices 4, and the like or adjusting the nonconformity of piping, maintenance and the like can be performed easily by opening a communicating valve 9 fully without stopping the operation of the plant.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the miniaturization of air compressor equipment in thermal nuclear power plants, etc., which have internal and control air compressor equipment.

0002

[Prior Art] Conventionally, air compressor equipment for thermal nuclear power plants has been installed separately for internal use and control air compressor equipment (separated systems), and supply air piping for internal use and control purposes have been installed separately. It is being planned (constructed) in

0003

[Problems to be Solved by the Invention] Conventionally, a plurality of in-house and control air compressors are installed per unit of a plant (one spare), and in recent years, Due to the expansion of the scope of automation, the air compressor itself has become larger, and there are many restrictions on installation space, making it difficult to plan the optimal layout. In addition, as the supply air piping, in-house supply air piping, and control supply air piping were each planned (and constructed), it was difficult to secure piping routes.

[0004] Furthermore, it was necessary to stop the air compressor equipment during maintenance of the main body and attached equipment.

[0005]

[Means for Solving the Problems] In order to achieve the above object, the air compressor main equipment of the present invention additionally includes one dehumidifier and an automatic valve (dehumidifier) for switching and selecting supply air for internal use and control use. In addition, a back pressure valve is added at the end to control the usable amount of in-house supply air in order to prevent any influence on the control supply air system.

[0006]

[Function] The air compressor main body is made up of air compressors for internal use and control use, and the air compressor equipment is connected with connecting piping and one dehumidifier, and the supply air is switched between internal use and control use. By adding an automatic selection valve (dehumidifier inlet valve and bypass valve), there is no need to install separate air compressors for internal use and control, as in conventional air compressor equipment, so air compression Not only can the number of machines be reduced, but the specifications (capacity) of the air compressor itself can also be lowered (downsized), eliminating the previous layout (space) constraints, making it an optimal solution. This makes it possible to plan with a flexible layout. In addition, in the past, individual planning (
The in-house supply air piping and control supply air piping, which had previously been constructed, can now be planned (constructed) for only one system, making piping route planning (securing) easier.

[0007] Furthermore, maintenance of the main body and attached devices can be performed without stopping the air compressor equipment.

[0008]

[Examples] Examples of the present invention will be described below.

FIG. 1 shows a system diagram of the present invention. In this embodiment, the air compressor 1 is composed of three units, and the three units are connected to the connecting pipe 2 at the outlet of the air compressor.The air tank 3 and dehumidifier 4 are configured in two units (units) in consideration of maintenance. shall be. The air compressor is selected to operate in rotation by opening and closing the air compressor outlet automatic valve 5, taking into account operating time, maintenance period, etc. When only in-house air is used, such as during regular plant inspections, in-house air can be supplied by fully closing the dehumidifier inlet valve 6 and fully opening the bypass valve 7. Further, normally, during plant operation, control air can be supplied by fully opening the dehumidifier inlet valve 6 and fully closing the bypass valve 7. In addition, when in-house air is used during plant operation, a back pressure valve 8 is installed at the end of the usage site, so it can be used without opening and closing the dehumidifier inlet valve 6 and bypass valve 7. In this case, if the control air line is affected, the back pressure valve 8 shuts off the supply of office air, allowing plant operation to continue.

[0010] Also, in case of maintenance of the air tank 3, dehumidification device 4, etc. (one of the two units) or problems with the piping (cracks, etc.), the communication valve 9 can be fully opened to avoid stopping the plant. Maintenance, etc. can be done easily.

[0011]

[Effects of the Invention] According to the present invention, it is possible to reduce the number of air compressors and downsize the air compressor capacity, so it is possible to achieve optimal arrangement in a smaller space than the conventional installation space. It also becomes easier to plan the supply air piping route, and there is no need to stop the air compressor equipment during maintenance.

[Brief explanation of the drawing]

FIG. 1 is a system diagram of air compressor equipment according to an embodiment of the present invention.

[Explanation of symbols]

1...Air compressor, 2...Connection piping, 3...Air tank, 4...Dehumidifier, 5...Air compressor outlet automatic valve, 6...Dehumidifier inlet valve, 7...Dehumidifier bypass valve, 8...Back pressure valve, 9 ...Communication valve.

Claims (1)

[Claims] Claim 1: In an air compressor facility in which one unit of a plant has a plurality of in-house air compressors and a plurality of control air compressors, the in-house and control air compressors are shared. Air compressor equipment characterized by: