JP2000073954A - Compression equipment with gas-liquid separating mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To separate large particles of hot water drops, impurity and considerably fine oil component in the gas-liquid mixture fluid for elimination by providing a fan mechanism in a separator element at a suction side. SOLUTION: This compression equipment is provided with a fan mechanism 100 having only a bearing structure and vane in a flow passage of a gas-liquid mixture fluid 68. With this structure, the fan mechanism 100 is rotated at a high speed with out using a power by the only force of a flow of the air-liquid mixture fluid discharged from a screw rotor 3a. As a result, after an oil component or the impurity having a heavy specific gravity collide with the fan mechanism 100 rotating at a high speed, the oil component or the impurity is sprung out from a shroud opening part of a fluid guide shroud, and on the other hand, a gas component including fine oil component and having a light specific gravity is flowed to a separator element 40 through the fan mechanism. Consequently, a fluid separating load of the separator element 40 can be lowered, and the lifetime of the element can be prolonged, and the separator element 40 can be checked for maintenance by only removing an upper cover 89.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compression device for compressing, pressurizing and sending gas such as air and gas.

[0002]

2. Description of the Related Art Japanese Patent Laid-Open No.
There is one disclosed in Japanese Patent No. 4649. FIG. 3 is a conceptual diagram of a liquid separation device disclosed in Japanese Patent Application Laid-Open No. 5-44649.
Screw rotors 203a and 203b, a suction chamber 205 located in front of the screw rotors 203a and 203b, a separator tank 208, and a receiver tank 281 communicating with the separator tank 208 and storing a gas-liquid mixed fluid. A discharge port 215 from the cylinder casing 202 and a pre-separator 260 for separating a part of the liquid contained in the gas-liquid mixed fluid from the discharge port 215 from a gas
, A scramble strip 264 provided in the pre-separator 260, and the upper lid 2 of the separator tank 208.
89, a pipe 228 connecting the outlet 218 to the external consumption side, a hollow portion 219 in the receiver tank 281, a guide plate 244, and a separator for separating fine oil from the gas-liquid mixed fluid. An element 240, an oil sump 241 in the separator element 240, a recovery pipe 242 for sucking oil collected in the separator element 240 and collecting the oil into the chamber, a gas-liquid mixed fluid 268,
It is composed of separation oil 269.

In a conventional liquid separating apparatus, screw rotors 203a and 203b in a cylinder casing 202 are provided.
The gas-liquid mixed fluid 268 compressed in is discharged from the discharge port 215 into the pre-separator 260. Gas-liquid mixed fluid 2
68 are separated from the gas in the pre-separator 260 as separated oil 269 in the receiver tank 28.
1 is stored at the bottom. Next, the gas-liquid mixed fluid 268 containing the fine oil component is further guided into the separator element 240 in the separator tank 208 via the hollow portion 219 in the receiver tank 281.

[0004] The oil separated by the separator element 240 is stored in the lower part of the separator element 240 and then returned to the suction chamber 205 via the recovery pipe 242. On the other hand, the clean compressed gas from which the oil has been removed is sent to the consumption side via the pipe 228 via the outlet 218 of the lid 289 attached above the separator tank 240.

[0005]

However, in the conventional apparatus, the gas-liquid mixed fluid 26 discharged from the discharge port 215 is not used.
8 to separate and remove large oil droplets in the pre-separator 260 or the scramble strip 26 having a complicated structure.
4, or a guide plate 244 must be provided.

Further, since the required volume of the pre-separator 260 for sufficiently separating oil droplets depends on the flow rate of the gas-liquid mixed fluid 268, the miniaturization of the pre-separator 260 is limited. It was difficult to reduce the size.

The upper lid 28 of the separator tank 208
9 has an outlet 218, a pipe 228, and a recovery pipe 242.
Is connected, when replacing the separator element 240, these pipes must be temporarily removed together with the upper lid 289, and there is a problem that maintenance and inspection are troublesome. In addition, in the event that the equipment is damaged and oil inside leaks out, there is a problem that the floor and the soil are contaminated.

The present invention solves such a problem, and easily separates and removes large oil droplets, impurities and extremely fine oil components in the gas-liquid mixed fluid 268, and reduces the liquid separation load on the separator element 240. As a result, the life of the separator element 240 is extended, and a cleaner compressed gas can be obtained. It is another object of the present invention to provide an inexpensive, high-performance, and environmentally-friendly compression device that enables miniaturization of the receiver tank 281 to the utmost, further facilitates maintenance and inspection, and prevents soil contamination at the time of breakage. .

[0009]

According to the first aspect of the present invention, there is provided a cylinder casing of a compression section main body, a receiver tank communicating with a discharge port of the cylinder casing, a separator tank communicating with the receiver tank, and the separator tank. In the oil-cooled compression device having a separator element incorporated in the separator tank, a fan mechanism is provided on the suction side of the separator element, and a discharge port, a discharge pipe, a safety valve, and a recovery pipe are provided in the separator tank itself other than the separator tank top cover. And an oil pan for receiving all of the oil-filled parts is provided at the lower part of the apparatus.

According to the first aspect of the invention, by providing the fan mechanism on the suction side of the separator element, the heavy oil in the gas-liquid mixed fluid can be easily blown off by the fan mechanism. In addition, with an oil pan provided at the bottom of the device having a necessary and sufficient volume for the amount of internal oil enclosed,
Do not allow oil leaking from equipment to escape to the outside.

The invention according to claim 2 is characterized in that a non-powered fan and a fluid guide shroud are used as the fan mechanism.

According to the second aspect of the present invention, by using a non-powered fan for the fan mechanism, there is no loss of power, and the fluid guide shroud prevents oil from flowing toward the separator element.

The invention according to a third aspect is characterized in that an axial fan or a centrifugal fan and the fluid guide shroud are used as the fan mechanism.

According to the third aspect of the invention, the heavy oil component in the gas-liquid mixed fluid can be separated by the axial fan or the centrifugal fan. The fluid guide shroud prevents oil from flowing toward the separator element.

According to a fourth aspect of the present invention, the oil-cooled compression device is provided with an oil pan.

According to the fourth aspect of the present invention, since the oil pan is provided in the oil-cooled compression apparatus, even if the equipment is damaged and the oil inside leaks out, it is possible to prevent the floor and soil from being contaminated. Can be prevented.

[0017]

1 and 2 show an embodiment of the present invention. FIG. 1 is a conceptual diagram of the entire compression device of the present invention, and FIG. 2 is a partial detailed view of a gas-liquid separation mechanism.

The cylinder casing 2, a screw rotor 3a built in the cylinder casing 2, a suction chamber 5 located in front of the screw rotor 3a, a separator tank 8, and a gas-liquid mixed fluid stored in communication with the separator tank 8. A receiver tank 81, a discharge port 15 from the cylinder casing 2, an upper lid 89 of the separator tank 8,
A discharge port 18 provided at an upper part of the separator tank 8,
A discharge pipe 28 connecting the discharge port 18 to the external consumption side, a hollow portion 19 in the receiver tank 81, a fluid guide shroud 101 incorporated in the fan mechanism 100, and a separator for separating fine oil components of the gas-liquid mixed fluid 68 Element 40
And an oil reservoir 41 in the separator element 40.

In FIG. 2, the fan mechanism 100 has only a bearing structure and blades, and is a low-resistance fan mechanism that rotates at high speed without power by the force of the flow of the gas-liquid mixed fluid 68 discharged from the screw rotor 3a. The fluid guide shroud 101 prevents the oil droplets 69 from flowing into the separator element 40 after the oil component in the gas-liquid mixed fluid 68 collides with the blades, and allows the oil guide 69 to drop into the receiver tank 81. And the shroud opening 101a is an oil intake.

In the compression device constructed as described above, since the fan mechanism 100 is provided in the flow path of the gas-liquid mixed fluid 68, only the force of the flow of the gas-liquid mixed fluid 68 discharged from the screw rotor 3a. The fan mechanism 100 rotates at high speed without power. However, the rotation speed of the fan depends on the gas flow rate.

After the heavy oil or impurities collides with the fan mechanism 100 rotating at high speed, it is repelled outward from the shroud opening 101a of the fluid guide shroud 101. On the other hand, the gas component having a low specific gravity containing fine oil passes through the fan mechanism 100 and passes through the separator element 4.
Flows to zero. The pressure outside the shroud opening 101a of the fluid guide shroud 101 is slightly higher than that in the receiver tank 81 due to the rotational force of the fan mechanism 100.
Once the shroud opening 10 of the fluid guiding shroud 101
The oil droplet 69 flipped outward from 1a does not flow backward to the separator element 40 side but drops to the receiver tank 81 side with lower pressure.

Further, since the discharge port 18, the discharge pipe 28, the recovery pipe 42 and the like are not connected to the upper lid 89 of the separator tank 8, the separator element 40
Can easily perform maintenance and inspection simply by removing the top cover 89.

The fan mechanism 100 may be an axial fan or a centrifugal fan.

Further, an oil pan 10 provided at the lower part of the apparatus
According to 2, even if the equipment is damaged, there is no fear of soil contamination by oil.

[0025]

According to the present invention, it is possible to easily separate and remove large oil droplets, impurities and extremely fine oil components in a gas-liquid mixed fluid, so that the liquid separation load on the separator element can be reduced. And the life of the element can be extended. Also, depending on the presence or absence of the fan mechanism, the conventional 1
It is possible to remove the oil content of the compressed gas to / 6 or less. In addition, an inexpensive, compact, high-performance, and environmentally-friendly compression device can be obtained, such as minimizing the size of the receiver tank, further facilitating maintenance and inspection, and preventing soil contamination in an emergency.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram of an entire compression apparatus showing an embodiment.

FIG. 2 is a detailed view of a gas-liquid separation mechanism.

FIG. 3 is a conceptual diagram showing an entire conventional gas-liquid separation device.

[Explanation of symbols]

 2 ... Cylinder casing 3a ... Screw rotor 5 ... Suction chamber 8 ... Separator tank 15 ... Discharge port 18 ... Discharge port 19 ... Cavity 28 ... Discharge pipe 40 ... Separator element 41 ... Oil sump 42 ... Recovery pipe 68 ... Gas-liquid mixed fluid 69 oil drop 81 receiver tank 89 top cover 100 fan mechanism 101 fluid guide shroud 101a shroud opening

Claims (4)

[Claims] 1. An oil having a cylinder casing of a compression section main body, a receiver tank communicating with a discharge port of the cylinder casing, a separator tank having an upper lid communicating with the receiver tank, and a separator element built in the separator tank. Gas-liquid separation, wherein a cooling mechanism is provided with a fan mechanism on the suction side of the separator element, and a discharge port for discharging compressed fluid or a recovery pipe for recovering oil is provided in the separator tank. Compression device with mechanism. 2. The compression device with a gas-liquid separation mechanism according to claim 1, wherein a non-powered fan and a fluid guide shroud are used as the fan mechanism. 3. The compression device with a gas-liquid separation mechanism according to claim 1, wherein an axial flow fan or a centrifugal fan and the fluid guide shroud are used as the fan mechanism. 4. The compression device with a gas-liquid separation mechanism according to claim 1, wherein the oil-cooled compression device is provided with an oil pan.