JPH0549877B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to a liquid supply device that supplies liquid such as lubricating liquid to various machines such as compressors and exhaust turbochargers. Conventionally, lubricating fluid supply devices for various turbo machines have had a lubricating fluid pump for supplying the lubricating fluid, and required external energy such as an electric motor to drive the pump. However, such conventional devices have the following problems. External energy is required to drive the lubricant pump, and if the lubricant pump stops due to a power outage, etc., the turbomachinery may be delayed in stopping due to its own inertia, so it is necessary to install a head tank for liquid supply. emergency measures such as these are required, which complicates the equipment. The present invention has been made in view of the above, and aims to simplify the device and save energy by providing a lubricant supply device that does not require a lubricant pump. One embodiment of the present invention will be described below with reference to FIGS. 1 and 2. 10 is an air machine, 20 is a cooler, 31, 32, 33 are lubricant tanks, 40
is a gas-liquid separator, 50 is a lubricant supply pipe, 51 is a lubricant supply distribution valve, 60 is a lubricant discharge pipe, 61 is a lubricant discharge distribution valve, 70 is an air supply pipe, 71 is an air supply distribution valve, 80 81 is an air exhaust pipe, and 81 is an air exhaust distribution valve. A lubricant supply pipe 50 and a lubricant discharge pipe 60 connecting each of the lubricant tanks 31, 32, 33 and the air machine 10 are connected to a lubricant supply distribution valve 51, respectively.
and each tank 3 via a lubricant discharge distribution valve 61.
It branches to 1, 32, and 33. Further, an air supply pipe 70 connecting each of the lubricating liquid tanks 31, 32, 33 and the air machine 10, and an air discharge pipe 80 connecting each tank 31, 32, 33 and the gas-liquid separator 40 are used for air supply, respectively. It branches to each tank 31, 32, 33 via a supply distribution valve 71 and an air discharge distribution valve 81. In the lubricating fluid supply device having the above configuration, the operation will be explained in the following three cases. When lubricating fluid is supplied from the tank 31 to the air machine 10 and this discharged fluid is received into the tank 32. The lubricant supply distribution valve 51 is connected to the lubricant supply pipe 50
connects the tank 31 and the pneumatic machine 10, and the lubricant discharge distribution valve 61 is set to open and close so that the lubricant discharge pipe 60 conducts the pneumatic machine 10 and the tank 32. At the same time, the air supply distribution valve 71 connects the air supply distribution pipe 70 to a suitable high pressure section (not shown) of the working fluid path of the pneumatic machine 10 and the tank 31, and the air discharge distribution valve 81 connects the air The discharge pipe 80 is opened and closed so as to connect the tank 32 and the gas-liquid separator 40, one end of which is open to the atmosphere. Under the setting conditions of each distribution valve described above, the lubricant in the tank 31 is pressurized by high pressure air from the air machine 10, and is force-fed to the necessary parts of the air machine 10, and the lubricating liquid in the tank 31 is pressurized by the high pressure air from the air machine 10, and is forced to the necessary parts of the air machine 10, such as bearing parts. The air is discharged from the air machine 10 via the cooler 20 and the distribution valve 61, and then received into the tank 32. In addition, as the lubricating liquid accumulates in the tank 32, the air that previously existed in the tank 32 is mixed with the lubricating liquid and mixed with the air or gas, and the air is transferred from the gas-liquid separator 40 to the atmosphere. Since the tank 32 is exhausted, the inside of the tank 32 is not pressurized to a large extent. Next, lubricant is supplied from tank 32 and
In the two cases of receiving lubricant into tank 3 and receiving it into tank 31 after supplying it from tank 33, the necessary lubricant is supplied to and discharged from the air machine by setting each distribution valve as shown below. Ru.

[Table] In the above case, →→→
By switching between the two, the necessary lubricating fluid is continuously supplied and discharged to the air machine. Note that the cooler 20 can be connected to the lubricant discharge pipe 6 as needed.
0 or at an appropriate position on the supply pipe 50. Further, the installation of the gas-liquid separator 40 is not always necessary and may simply be a pipe open to the atmosphere. Note that during the period before and after the start or stop of operation of the air machine 10, a small-scale separate lubricant supply device (for example, a small-scale electric motor-driven pump) is used.
An additional lubricant may be provided, and its operation may supply supplementary lubricant. FIG. 2 shows a control device for the lubricant supply device shown in FIG. In the figure, 100 is a controller, 101, 10
2,103 is a liquid level detector. The liquid level detectors 101, 102, 103 provided in each tank 31, 32, 33
The liquid levels 31a, 32a, 33a of 2 and 33 are detected, and the detection signals of the respective liquid level detectors 101, 102, 103 are input to the controller 100, and the controller 100 controls the tank to which the lubricating liquid is to be supplied. Each distribution valve 51, 61, 71, 8 is controlled by an operation signal from the controller 100.
1 conduction circuit is set. The above configuration enables continuous unmanned operation. In the examples, a case is described in which the purpose is to supply lubricating liquid to air machinery, but the present invention is not limited to this, and the present invention is not limited to this, but is applicable to supply of cooling liquid or heating liquid to various equipment, or hydraulic It can also be applied to various liquid supply devices such as oil supply to devices. In this case, a separate compressed gas generation source such as an air compressor may be required. The present invention is constructed as described above, and according to the present invention, it is possible to push liquid such as lubricating liquid into the required part by the switching action of the distribution valve using fluid pressure such as air pressure, so the lubricating liquid pump It is possible to provide a liquid supply device that does not require external energy for supplying the same liquid, has a simplified device, and saves energy.

[Brief explanation of the drawing]

1 and 2 are system diagrams showing one embodiment of the present invention. 10... Air machine, 31, 32, 33... Lubricating liquid tank, 51... Lubricating liquid supply distribution valve, 61...
Lubricant discharge distribution valve, 71... Air supply distribution valve, 8
1... Air discharge distribution valve, 100... Controller, 10
1,102,103...Liquid level detector.

Claims (1)

[Scope of Claims] 1. A device that supplies liquid such as lubricating liquid to various machines such as compressors and superchargers, including a plurality of tanks in which the liquid is stored, and a liquid outlet of the machine. a liquid discharge pipe branched and connected to the liquid inlet of each of the tanks;
and a liquid circulation pipe consisting of a liquid supply pipe converging from the liquid outlet of each of the tanks and connected to the liquid inlet of the machine, and a working fluid outlet pipe of the various machines mentioned above, or a liquid circulation pipe provided separately from the machine. A working fluid pipe branched from an outlet pipe of a working fluid source such as a compressor and connected to a working fluid inlet of each tank, a branch part of the liquid discharge pipe, a confluence part of the liquid supply pipe, and The liquid circulation pipe and the working fluid pipe are provided at each branch part of the working fluid pipe, and are connected to one of the tanks to switch the communication between the liquid circulation pipe and the working fluid pipe between the various machines and the tanks. It is characterized by comprising a distribution valve that introduces a working fluid and force-feeds the liquid in the tank to the machine via the fluid supply pipe, and returns the liquid discharged from the machine to another tank. Liquid supply device. 2. In equipment that supplies liquid such as lubricating liquid to various machines such as compressors and superchargers, there are multiple tanks in which the liquid is stored, and each tank is branched from the liquid outlet of the machine. a liquid discharge line connected to the liquid inlet of the
and a liquid circulation pipe consisting of a liquid supply pipe converging from the liquid outlet of each of the tanks and connected to the liquid inlet of the machine, and a working fluid outlet pipe of the various machines mentioned above, or a liquid circulation pipe provided separately from the machine. A working fluid pipe branched from an outlet pipe of a working fluid source such as a compressor and connected to a working fluid inlet of each tank, a branch part of the liquid discharge pipe, a confluence part of the liquid supply pipe, and The liquid circulation pipe and the working fluid pipe are provided at each branch part of the working fluid pipe, and are connected to one of the tanks to switch the communication between the liquid circulation pipe and the working fluid pipe between the various machines and the tanks. A distribution valve that introduces working fluid and pumps the liquid in the tank through the fluid supply pipe to the machine, and returns the liquid discharged from the machine to other tanks; and a liquid level in each tank. 1. A liquid supply device comprising: a liquid level detector that detects the liquid level; and a control device that opens and closes each of the distribution valves based on a detection signal from the liquid level detector.