JPH08219596A - Oil separator - Google Patents

Abstract

PURPOSE: To provide an oil separator which enables narrowing of a layout space and accomplishes a miniaturization and a reduction in cost of a compressor itself. CONSTITUTION: In an oil separator which is arranged in a discharging system of a compressor, a filter 12 as oil separation material comprising fiber material or the like is housed below a container 91 of the oil separator and the upper part of the container 91 is packed with an oil adsorbing agent such as particulate activated charcoal 22.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a helium gas compression device for a cryogenic refrigerator, and an oil separator suitable for the device.

[0002]

2. Description of the Related Art A system diagram of a conventional helium gas compression device having an oil separator is shown in FIG. Atmospheric pressure helium gas returned from the customer is used in surge bottles 5
After that, it is sucked into the compressor 1 and compressed.

The compressed helium gas is discharged in a state of containing oil and enters the gas cooler 2, and the gas cooler 2
After being cooled by the cooling water, the oil enters the oil separator 3, and the oil is separated by the oil separator 3.

Next, the helium gas from which the oil has been separated enters the adsorber 4, where the vapor of the oil contained in the gas is removed and then supplied to the demand destination. The oil whose temperature has been raised by lubricating the compressor 1 enters the oil cooler 6, where it is cooled by cooling water and then returns to the compressor again.

The oil separated by the oil separator 3 is also returned to the compressor 1. A relief valve 7 is provided in a bypass circuit 8 that connects the outlet of the oil separator 3 and the outlet of the surge bottle 5.

The details of the conventional oil separator 3 are shown in FIG. In FIG. 5, reference numeral 11 denotes a container in which a cylindrical filter 12 made of microfiber or the like is arranged, and an upper end plate 13 and a lower end plate 14 for closing the filter 12 are provided on the upper end face and the lower end face thereof. Is installed.

A gas inlet 15 is provided at the top of the container 11.
And a gas outlet 16 and an oil outlet 17 at the bottom, and the gas inlet 15 is the upper end plate 13 of the filter 12.
There is an opening on the bottom surface of the center.

The helium gas containing oil mist is introduced from the gas inlet 15 to the inner peripheral portion of the filter 12, flows through the filter 12 toward the outer peripheral portion thereof, and flows out from the gas outlet 16.

[0009] The mist of oil adheres to and grows in the process of passing through the filter 12, becoming liquid oil and separated from gas. This oil flows down in the filter 12, flows out under the filter 12, and the lower end plate 1
Drop from the outer peripheral edge of 4.

The oil accumulated at the bottom of the container 11 is recovered by the compressor 1 through the oil outlet 17. The white arrows in the figure show the flow of gas, and the black arrows show the flow of oil.

FIG. 6 shows the details of the conventional adsorber. In FIG. 6, reference numeral 21 denotes a container, in which two perforated plates 24 such as punching metal are fixed on the upper and lower parts of the container, and granular activated carbon 22 as an adsorbent is filled between them through a cushioning agent 23 made of fibers or the like. There is.

The cushioning agent 23 holds the granular activated carbon 22 so as not to be destroyed. Further, a gas inlet 25 is provided at the lower portion of the side wall of the container 21, and a gas outlet 28 is provided at the top.

Therefore, the helium gas is supplied to the gas inlet 25.
Flow into the inlet chamber 26 formed below the perforated plate 24, the perforated plate 24, the cushioning agent 23, the granular activated carbon 22,
After passing through the cushioning agent 23 and the perforated plate 24 in this order, the cushioning agent 23 and the perforated plate 24 flow into the outlet chamber 27 formed above and flow out from the gas outlet 28. Then, in this process, the vapor of oil contained in the helium gas is adsorbed by the granular activated carbon 22.

[0014]

In the above-mentioned conventional helium gas compression apparatus, the oil separator 3 and the adsorber 4 are separately provided to separate and adsorb the oil contained in the helium gas for removal. Therefore, a large space is required for disposing the oil separator 3 and the adsorber 4, and a connecting pipe for the space is required.

Further, since the container needs to have a sufficient pressure resistant structure, there is a problem that the weight and cost increase. An object of the present invention is to provide an oil separator that can solve these problems.

[0016]

[Means for Solving the Problems]

(First Means) An oil separator according to the present invention is an oil separator arranged in a discharge system of a compressor,
(A) A filter as an oil separating material made of a fiber material or the like is stored below the container of the oil separator, and (B) an oil adsorbent such as granular activated carbon is filled above the container. And (Second Means) An oil separator according to the present invention is an oil separator arranged in a discharge system of a compressor,
(A) A container of an oil separator is divided into a first chamber and a second chamber by a partition plate, and (B) a filter as an oil separating material made of a fiber material or the like is provided in the first chamber on the upper side of the container. (C) The second chamber on the lower side of the container is filled with an oil adsorbent such as granular activated carbon, and (D) the top of the first chamber and the bottom of the second chamber are connected and communicated. It is characterized in that it is provided with a connecting pipe. (Third Means) The helium gas compression device according to the present invention is
(A) A compressor, a gas cooler, an oil separator according to the first means or the second means, a surge bottle, and an oil cooler, and (B) an atmospheric pressure helium gas returned from a customer. Is sucked into the compressor through a surge bottle, (C) the helium gas compressed by the compressor is sent to the gas cooler, (D) the helium gas cooled by the gas cooler is sent to the oil separator, and (E) ) The helium gas separated from the oil by the oil separator is sent to the demand destination, and the oil separated by the (F) oil separator is returned to the compressor and heated by lubricating the (G) compressor. The oil is cooled by an oil cooler.

[0017]

Since the present invention is provided with the oil separator with the built-in adsorber as described above, the helium gas containing the oil introduced into the oil separator is separated and removed by the oil mist when passing through the filter. It Then, when the granular activated carbon is passed through, the vapor of the oil is adsorbed and removed.

[0018]

【Example】

(First Embodiment) FIG. 1 is a vertical sectional view of an oil separator incorporating an adsorber according to a first embodiment of the present invention.

In FIG. 1, reference numeral 91 is an oil separator container, and a cylindrical filter 12 made of microfiber (fiber material) is disposed below the oil separator container. An upper end plate 13 and a lower end plate 14 which are closed are attached.

Further, two perforated plates 24 made of punching metal or the like are fixed above the inside thereof, and granular activated carbon 22 as an adsorbent is filled between them through a cushioning agent 23 made of fibers or the like.

A gas outlet 28 is provided at the top of the container 91, and a gas inlet 15 and an oil outlet 17 are provided at the bottom of the container 91. The gas inlet 15 is provided at the lower end plate 14 of the filter 12.
It has an opening on the upper surface of the center of.

The helium gas containing the oil mist from the gas cooler 2 is introduced from the gas inlet 15 into the inner peripheral portion of the filter 12 and flows through the filter 12 toward the outer peripheral portion thereof.

In the process, the mist of oil adheres to the filter 12 and grows to become liquid oil, which is separated from gas. The oil separated from the gas drops on the bottom of the container 91 and collects on the bottom.

The accumulated oil is recovered by the compressor 1 through the oil outlet 17. On the other hand, let it pass through the filter 12,
The helium gas from which the oil mist has been removed turns upward and enters the inlet chamber 26 formed below the perforated plate 24.
After passing through the perforated plate 24, the cushioning agent 23, the granular activated carbon 22, the cushioning agent 23, and the perforated plate 24 in that order, the gas flows into the outlet chamber 27 formed above the gas. It flows out from the outlet 28 and is supplied to the demand destination.

In this process, the vapor of oil contained in the helium gas is adsorbed by the granular activated carbon 22. (Second Embodiment) FIG. 2 is a vertical sectional view of an oil separator incorporating an adsorber according to a second embodiment of the present invention.

In FIG. 2, reference numeral 91 'designates a container, the interior of which is divided into two upper and lower chambers 93, 94 by a partition plate 92. In the upper first chamber 93, the filter 12, the upper end plate 13 and the lower end plate 14 are arranged as in the first embodiment.

Two perforated plates 24 made of punching metal or the like are fixed in the second chamber 94 in the lower stage, and granular activated carbon 22 as an adsorbent is interposed between them through a cushioning agent 23 made of fibers or the like. Is filled as well.

The gas inlet 1 is provided at the top of the first chamber 93.
5 and the gas outlet 16 have an oil outlet 17 at the bottom of the side wall.
Is provided. A gas inlet 25 is provided in the lower portion of the side wall of the second chamber 94, and a gas outlet 28 is provided in the upper portion of the side wall.

The gas outlet 16 and the gas inlet 25 are connected by a connecting pipe 9
5 are connected and communicated. And the gas cooler 2
The helium gas containing the oil mist is introduced from the gas inlet 15 to the inner peripheral portion of the filter 12 and flows through the filter 12 toward the outer peripheral portion thereof, and in the process, the oil mist is filtered. It adheres to and grows into liquid oil, which is separated from gas.

This oil drops on the bottom of the first chamber 93 and collects on the bottom. The oil that has accumulated is the oil outlet 17
And is recovered by the compressor 1. On the other hand, the helium gas that has passed through the filter 12 and the oil mist has been removed turns upward, is guided from the gas outlet 16 to the gas inlet 25 through the communication pipe 95, and is formed below the perforated plate 24. Flow into the closed inlet chamber 26, and the perforated plate 24 and the cushioning agent 2
3, the granular activated carbon 22, the cushioning agent 23, and the perforated plate 24 in this order, and then flows into the outlet chamber 27 formed above them, flows out from the gas outlet 28, and is supplied to the demand destination. It

In this process, the vapor of oil contained in the helium gas is adsorbed by the granular activated carbon 22. As described above, the oil separator 9 according to the present invention
(First embodiment) or 9 '(second embodiment) is a combination of the conventional filter type oil separator 3 and the adsorber 4, and therefore, compared with the conventional one shown in FIGS. One set of the top plate 91a and the bottom plate 91b of the container 91 can be omitted, and further, the pipe for connecting the oil separator 3 and the adsorber 4 becomes unnecessary.

As a result, the piping space can be narrowed, and the weight and cost can be reduced. The oil separator 9 of the first embodiment is different from the oil separator 9 ′ of the second embodiment in that the partition plate 92 and the connecting pipe 9 are
Since 5 can be omitted, it is advantageous in terms of installation space and cost, but in the oil separator 9'of the second embodiment, even if it is laid down sideways, the oil in the first chamber does not come to the second chamber side. There is an advantage. (Third Embodiment) FIG. 3 shows a system diagram of a compressor according to a third embodiment of the present invention.

The compressor according to the third embodiment is equipped with the oil separator incorporating the adsorber described in the first or second embodiment. Since the third embodiment uses the oil separator (9 or 9 ') of the present invention, there is an advantage that it is not necessary to install the adsorber 4 in the system diagram (Fig. 4) of the conventional device.

[0034]

Since the present invention is constructed as described above, it has the following effects. (1) In the oil separator of the present invention arranged in the discharge system of the compressor, a filter as an oil separating agent made of fiber material and an oil adsorbent such as granular activated carbon are contained in one container. Therefore, the installation space can be narrowed. (2) Therefore, the compression device itself can be downsized and the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of an oil separator according to a first embodiment of the present invention.

FIG. 2 is a vertical sectional view of an oil separator according to a second embodiment of the present invention.

FIG. 3 is a system diagram of a helium gas compression device having an oil separator of the present invention.

FIG. 4 is a system diagram of a conventional helium gas compression device.

FIG. 5 is a vertical sectional view of a conventional oil separator.

FIG. 6 is a vertical sectional view of a conventional adsorber.

[Explanation of symbols]

 1 ... Compressor, 2 ... Gas cooler, 3 ... Oil separator, 4 ... Adsorber, 5 ... Surge bottle, 6 ... Oil cooler, 7 ... Relief valve, 8 ... Bypass circuit, 9, 9 '... Adsorber built-in oil separator, 11 ... container, 12 ... filter, 13 ... upper end plate, 14 ... lower end plate, 15 ... gas inlet, 16 ... gas outlet, 17 ... oil outlet, 21 ... container, 22 ... granular activated carbon, 23 ... cushioning agent, 24 ... Perforated plate, 25 ... Gas inlet, 26 ... Inlet chamber, 27 ... Outlet chamber, 28 ... Gas outlet, 91, 91 '... Container, 91a ... Top part, 91b ... Bottom part, 92 ... Partition plate, 93 ... First chamber, 94 ... Room 2, 95 ... Communication pipe.

Claims (3)

[Claims] 1. An oil separator arranged in a discharge system of a compressor (1), wherein a filter (12) as an oil separating material made of fiber material or the like is provided below a container (91) of the oil separator (A). (B) The container (91)
An oil separator which is filled with an oil adsorbent such as granular activated carbon (22) above. 2. An oil separator arranged in a discharge system of a compressor (1), wherein a container (91 ') of (A) oil separator is divided into a first chamber (93) and a second chamber by a partition plate (92). The chamber (94) is partitioned, and (B) the first chamber (93) on the upper side of the container (91 ') accommodates a filter (12) as an oil separating material made of a fiber material or the like, ( C) The second chamber (94) on the lower side of the container (91 ') is filled with an oil adsorbent such as granular activated carbon (22), and (D) the first
An oil separator comprising a communication pipe (95) for connecting and communicating the top portion (91a) of the chamber (93) and the bottom portion (91b) of the second chamber (94). 3. A compressor (1), a gas cooler (2), an oil separator (9 or 9 ') according to claim 1 or 2, a surge bottle (5), and an oil cooler (A). The helium gas at atmospheric pressure, which is equipped with 6) and is returned from the customer (B), is sucked into the compressor (1) via the surge bottle (5), and is (C) compressed by the compressor (1). The helium gas is sent to the gas cooler (2), the helium gas cooled by the (D) gas cooler (2) is sent to the oil separator (9 or 9 '), and the (E) oil separator (9 or 9'). The helium gas from which the oil has been separated by is sent to the demand destination, and the oil separated by the (F) oil separator (9 or 9 ') is returned to the compressor (1),
(G) A helium gas compression device characterized in that the oil whose temperature is raised by lubricating the compressor (1) is cooled by an oil cooler (6).