CN219953664U - Oil-gas separation cylinder structure and oil injection screw compressor - Google Patents

Abstract

The utility model relates to an oil-gas separation cylinder structure and an oil injection screw compressor. Wherein, oil-gas separation section of thick bamboo structure includes: the outer tank body, the feeding pipe, the upper cylinder body and the partition plate. The inlet pipe passes through the lateral wall of the outer tank body. The outer wall of the upper cylinder is fixedly sleeved with an annular baffle, the outer wall of the annular baffle is fixedly connected to the inner wall of the outer tank, and the first end of the feeding pipe is positioned between the outer wall of the upper cylinder and the inner wall of the outer tank. The baffle fixed connection is on the inner wall of outer jar body, and the baffle is located the below of last barrel and is provided with the oil through hole. The oil-gas mixture enters the outer tank body through the feed pipe, rotates along the inner wall of the outer tank body under the action of centrifugal force and flows downwards so as to be separated. The oil with larger specific gravity flows downwards along the inner wall of the outer tank body to the top surface of the partition plate and then leaks from the oil through hole to the bottom of the tank for storage. The separated oil-gas mixture is blocked by the baffle plate and flows out. Thereby preventing the oil-gas mixture from striking the oil level in the oil storage chamber. The overall height of the tank body is not required to be lengthened so as to increase the distance between the bottom of the inner cylinder and the tank bottom, and the manufacturing and mounting cost is reduced.

Description

Oil-gas separation cylinder structure and oil injection screw compressor

Technical Field

The utility model relates to the technical field of oil injection screw compressors, in particular to an oil-gas separation cylinder structure and an oil injection screw compressor.

Background

The oil-gas separation cylinder is a core part of the oil-injection screw compressor, the traditional middle air-inlet type oil-gas separation structure consists of a tank body and an inner cylinder, and the inner cavity of the tank body is divided into an upper part and a lower part by a baffle plate at the top end of the inner cylinder. The upper cavity is mainly used for installing an oil-gas separator core for secondary separation; the lower cavity utilizes a space structure to perform primary separation of the oil-gas mixture. For primary separation of the oil-gas mixture, the oil-gas mixture enters the tank body and then moves downwards around the outer wall of the inner cylinder in a rotating way. In the process, oil with larger specific gravity is sedimentated to the bottom of the tank in a homeotropic manner, and the residual oil-gas mixture flows upwards from the inner side of the inner cylinder after rotating downwards to the bottom end of the inner cylinder until passing through the inner cylinder and then entering the upper cavity for secondary separation.

Because the inner tube bottom is nearer with the tank bottom distance, when the oil gas mixture velocity of flow is faster, can continue the downwardly flowing one section distance behind its rotation to the inner tube bottom, lead to the oil liquid surface that the oil gas mixture impacted the tank bottom to lead to the oil level unstable, noise, vibration, the liquid level observation that not only influence the complete machine operation can greatly influence oil gas primary separation effect moreover. In order to ensure the oil-gas separation effect of the oil-gas separation cylinder, the traditional middle air inlet type oil-gas separation cylinder is required to be provided with a vertical baffle at the bottom, and meanwhile, the overall height of the tank body is prolonged so as to increase the distance between the bottom of the inner cylinder and the bottom of the tank. The oil-gas separation cylinder is used as a pressure container, the manufacturing cost of the tank body is high, and the tank body of the lengthened oil-gas separation cylinder brings more manufacturing and installation cost.

Disclosure of Invention

In order to overcome the problems existing in the related art at least to a certain extent, the utility model aims to provide an oil-gas separation cylinder structure and an oil injection screw compressor, which can solve the problem that the manufacturing and installation cost is too high due to the fact that the overall height of a tank body is lengthened for ensuring the oil-gas separation effect of the oil-gas separation cylinder in the prior art. The preferred technical solutions of the technical solutions provided by the present utility model can produce a plurality of technical effects described below.

The utility model provides an oil-gas separation cylinder structure, which comprises:

an outer can;

the first end of the feed pipe penetrates through the side wall of the outer tank body, and the second end of the feed pipe is used for introducing an oil-gas mixture;

the upper cylinder is fixedly sleeved with an annular baffle plate on the outer wall of the upper cylinder, the outer wall of the annular baffle plate is fixedly connected to the inner wall of the outer tank, and the first end of the feed pipe is positioned between the outer wall of the upper cylinder and the inner wall of the outer tank;

the baffle, fixed connection is in on the inner wall of outer jar body, be provided with the oil feed hole that the oil feed liquid leaked down on the baffle, the baffle is located the below of last barrel.

Optionally, the method further comprises:

the lower cylinder body, the bottom fixed connection of lower cylinder body is in on the top surface of baffle, be provided with the through-hole on the top surface of baffle, the through-hole is located the inboard of lower cylinder body, the external diameter of lower cylinder body is less than the internal diameter of last cylinder body.

Optionally, the lower cylinder is located below the upper cylinder.

Optionally, the method further comprises:

the first end of the oil outlet pipe penetrates through the side wall of the outer tank body and penetrates through the partition plate to extend to the lower portion of the partition plate, and the second end of the oil outlet pipe is used for extracting oil.

Optionally, a perforation is formed on the partition plate, and the oil outlet pipe passes through the perforation.

Optionally, the second end of the feed pipe is provided with a flange.

Optionally, the cross-sectional area of the feed pipe penetrating into the outer tank portion decreases in sequence from an end closer to the inner wall of the outer tank to an end farther from the inner wall of the outer tank.

Optionally, the oil holes are uniformly arranged along the circumferential direction of the partition plate.

Optionally, the method further comprises:

the drain pipe is arranged at the bottom of the outer tank body and is communicated with the inner part of the outer tank body.

The utility model provides an oil injection screw compressor, which comprises the oil-gas separation cylinder structure.

The technical scheme provided by the utility model can comprise the following beneficial effects:

the oil-gas mixture enters the outer tank body through the feed pipe, rotates along the inner wall of the outer tank body under the action of centrifugal force and flows downwards so as to be separated. The oil with larger specific gravity flows downwards to the top surface of the partition plate along the inner wall of the outer tank body, and then leaks to the tank bottom of the outer tank body from the oil through hole on the partition plate for storage. The separated oil-gas mixture flows out from the gap between the upper cylinder and the baffle plate after being blocked by the baffle plate when flowing downwards. Therefore, the oil-gas mixture is prevented from impacting the oil surface in the oil storage cavity, noise, vibration and liquid level observation of the operation of the whole machine are prevented from being influenced by unstable oil level, and the oil-gas separation effect is prevented from being influenced. The overall height of the tank body is not required to be lengthened so as to increase the distance between the bottom of the inner cylinder and the tank bottom, and the manufacturing and mounting cost is reduced.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the utility model as claimed.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model.

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic cross-sectional view of an oil and gas separation cartridge structure shown in accordance with some example embodiments;

FIG. 2 is an exterior schematic view of an oil and gas separator bowl structure shown according to some example embodiments;

FIG. 3 is a schematic illustration of an oil and gas separator cartridge structure with an outer tank hidden according to some example embodiments;

FIG. 4 is a schematic view of an upper barrel structure shown according to some example embodiments;

FIG. 5 is a schematic view of a separator structure shown according to some example embodiments;

fig. 6 is a schematic diagram of a feed tube structure shown in accordance with some example embodiments.

In the figure: 1. an outer can; 2. a feed pipe; 3. an upper cylinder; 4. an annular baffle; 5. a partition plate; 6. oil holes; 7. a lower cylinder; 8. an oil outlet pipe; 9. a through hole; 10. perforating; 11. a blow-down pipe; 12. and a flange plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, based on the examples herein, which are within the scope of the utility model as defined by the claims, will be within the scope of the utility model as defined by the claims.

Hereinafter, embodiments will be described with reference to the drawings. Furthermore, the embodiments shown below do not limit the summary of the utility model described in the claims. The whole contents of the constitution shown in the following examples are not limited to the solution of the utility model described in the claims.

Referring to FIGS. 1-6, the present embodiment provides an oil and gas separation cartridge structure comprising: the device comprises an outer tank body 1, a feed pipe 2, an upper cylinder body 3 and a partition plate 5.

An annular baffle 4 is sleeved on the outer wall of the top end of the upper cylinder body 3, and the inner ring of the annular baffle 4 is attached to the inner wall of the outer tank body 1 and welded and fixed. So that the upper cylinder 3 is vertically erected inside the outer can 1. At this time, the space above the annular baffle 4 in the outer tank 1 is an upper cavity, and the oil-gas separator core for secondary separation is arranged in the upper cavity.

The outer side wall of the baffle plate 5 is attached to the inner wall of the outer tank body 1 and welded and fixed. At this time, the partition 5 is erected below the upper cylinder 3. Thus, the space inside the outer tank 1, the periphery of the upper cylinder 3 and between the annular baffle 4 and the bottom end of the upper cylinder 3 is a separation chamber. The first end of the feed pipe 2 is threaded into the side wall of the outer vessel 1 such that the first end of the feed pipe 2 enters the separation chamber. And the second end of the feed pipe 2 is introduced with an oil-gas mixture, and the oil-gas mixture can enter the separation cavity through the feed pipe 2 for oil-gas separation. The space from the lower part of the baffle plate 5 to the tank bottom of the outer tank body 1 is an oil storage cavity. The partition plate 5 is provided with an oil through hole 6 in a penetrating way, and oil can leak into the oil storage cavity from the oil through hole 6.

After the oil-gas mixture is introduced from the second end of the feed pipe 2 with a certain pressure, the oil-gas mixture enters the separation cavity through the feed pipe 2 at a certain flow rate, so that the oil-gas mixture rotates and flows downwards along the inner wall of the outer tank 1 in the separation cavity under the action of centrifugal force. In the process, the oil with larger specific gravity flows downwards along the inner wall of the outer tank body 1 to the top surface of the partition plate 5, then leaks to the tank bottom of the outer tank body 1 from the oil through holes 6 on the partition plate 5, and is stored in the oil storage cavity. Because the gap is arranged between the upper cylinder body 3 and the baffle plate 5, after the oil-gas mixture from which a part of oil is separated rotates along the inner wall of the outer tank body 1 and flows downwards, the oil-gas mixture flows into the upper cylinder body 3 from the gap between the upper cylinder body 3 and the baffle plate 5, and then flows into the upper cavity through the inside of the upper cylinder body 3 for secondary separation.

So set up, the oil gas mixture after the separation is blockked by baffle 5 when downwardly flowing, prevents oil gas mixture impact oil liquid level in the oil storage intracavity, avoids the unstable noise, vibration, the liquid level observation that influences the complete machine operation of oil level, avoids influencing the oil-gas separation effect. The overall height of the tank body is not required to be lengthened so as to increase the distance between the bottom of the inner cylinder and the tank bottom, and the manufacturing and mounting cost is reduced.

It should be noted that, although a small part of the oil-gas mixture can enter the oil storage cavity through the oil through hole 6, after a large part of the oil-gas mixture is blocked by the oil-gas mixture baffle plate 5, the small part of the oil-gas mixture cannot affect the oil surface in the oil storage cavity.

As an alternative embodiment, a through hole 9 is formed through the top surface of the partition plate 5, and a small part of the oil-gas mixture can enter the oil storage cavity through the oil through hole 6, then can return to the upper side of the partition plate 5 through the through hole 9, and then flows into the upper cylinder 3 through a gap between the upper cylinder 3 and the partition plate 5. In order to prevent the oil-gas mixture from flowing from the through hole 9 into the oil storage chamber. A lower cylinder 7 is fixedly provided vertically upward on the top surface of the partition 5 such that the lower cylinder 7 is located at the periphery of the through hole 9. So set up, the oil gas mixture can get into in the upper cylinder 3 through the space between the upper cylinder 7 top and the upper cylinder 3 bottom, and the periphery that lower cylinder 7 stands on, blocks oil gas mixture and prevents oil gas mixture from flowing into the oil storage intracavity from through-hole 9.

Wherein the upper cylinder 3 and the lower cylinder 7 are both coaxially arranged with the outer tank 1.

In some embodiments, the outer diameter of the lower cylinder 7 is smaller than the inner diameter of the upper cylinder 3, so that the upward extension of the outer wall of the lower cylinder 7 is located inside the upper cylinder 3. Ensuring that the oil-gas mixture cannot directly enter the lower cylinder 7 when flowing downwards in a rotating way. The lower cylinder 7 is positioned below the upper cylinder 3, so that a gap between the top end of the lower cylinder 7 and the bottom end of the upper cylinder 3 is larger, and the smooth flow of the oil-gas mixture is ensured.

As an alternative embodiment, further comprising: and an oil outlet pipe 8. The first end of the oil outlet pipe 8 passes through the side wall of the outer tank body 1 and then passes through the partition plate 5 to extend below the partition plate 5. And welding the outer wall of the oil outlet pipe 8 with the side wall of the outer tank body 1. So set up, use the oil-well pump to extract from the second end of play oil pipe 8 and can extract the fluid in baffle 5 below oil storage district, get the oil more convenient.

Wherein the first end of the oil outlet pipe 8 should extend towards the bottom of the outer tank 1 as far as possible, ensuring that more oil can be extracted. But the first end of the oil outlet pipe 8 cannot extend completely to the bottom of the outer tank 1, preventing impurities precipitated at the bottom of the outer tank 1 from being extracted together.

In some embodiments, perforations 10 are pre-formed in the baffle plate 5, wherein the perforations 10 are larger in size than the outlet pipe 8, and the outlet pipe 8 is passed through the perforations 10 and through the baffle plate 5. So set up, have bigger installation space when installation goes out oil pipe 8, the installation is more convenient. The perforation 10 can also function as the oil through hole 6, and oil can leak into the oil storage cavity through the perforation 10.

In some embodiments, a flange 12 is disposed at the second end of the oil outlet pipe 8, so as to facilitate connection with subsequent oil pumping devices such as an oil pump.

As an alternative embodiment, the cross-sectional area of the first end of the feed tube 2 is smaller than the cross-sectional area of the second end of the feed tube 2. And the cross-sectional area of the feed tube 2 increases gradually from the first end to the second end until it increases to the same cross-sectional area as the second end of the feed tube 2. Specifically, after the first end of the feed pipe 2 penetrates the outer tank 1 and is installed in place, the portion from the first end of the feed pipe 2 to the junction with the side wall of the outer tank 1 is the portion penetrating the side wall of the outer tank 1. The cross-sectional area of the feed tube 2 is the same as the cross-sectional area of the second end of the feed tube 2 at its junction with the side wall of the outer vessel 1. I.e. the cross-sectional area of the feed pipe 2 decreases in sequence from its junction with the side wall of the outer vessel 1 to its first end.

The setting like this, the part occupation space that inlet pipe 2 penetrated outer jar body 1 lateral wall is less, and jar body size is less, the cost is reduced. And the flow rate is larger when the oil-gas mixture is sprayed out from the first end of the feeding pipe 2, and the centrifugal force is larger, so that the separation effect is better.

As an alternative embodiment, a plurality of oil holes 6 are provided, and the plurality of oil holes 6 are uniformly provided along the circumferential direction of the partition plate 5. So set up, the fluid of optional position on the baffle 5 top surface all can flow and leak down rather than nearest oil through hole 6 after the short distance for the fluid that flows to the baffle 5 top surface leaks down from oil through hole 6 more easily. Avoiding long-time accumulation of oil on the top surface of the partition board 5.

As an alternative embodiment, further comprising: a sewage drain pipe 11. The first end of the blow-down pipe penetrates into the bottom of the outer tank body 1 and is welded and fixed, and at the moment, the first end of the blow-down pipe is positioned at the tank bottom inside the outer tank body 1. A valve is provided at the second end of the drain pipe 11. So set up, after the fluid is extracted, open the valve and can discharge the waste residue that deposits at outer jar body 1 tank bottoms.

The utility model also provides an oil injection screw compressor, which comprises the oil-gas separation cylinder structure in the embodiment. The development of the beneficial effects is generally similar to that brought by the oil-gas separation cylinder structure, and therefore, the description thereof is omitted.

It should be noted that, the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are used herein for convenience of description and simplicity of description only, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description herein, it should also be noted that the terms "mounted," "connected," "coupled," and "connected," are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example, unless otherwise specifically indicated and defined; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model can be understood as appropriate by those of ordinary skill in the art.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives, and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model. It is to be understood that the same or similar parts in the above embodiments may be referred to each other, and that in some embodiments, the same or similar parts in other embodiments may be referred to. The schemes provided by the utility model comprise the basic schemes of the schemes, are independent of each other and are not mutually restricted, but can be combined with each other under the condition of no conflict, so that a plurality of effects are realized together.

Claims (10)

1. An oil and gas separation cartridge structure, comprising:

an outer tank (1);

the first end of the feeding pipe (2) penetrates through the side wall of the outer tank body (1), and the second end of the feeding pipe (2) is used for introducing an oil-gas mixture;

an upper cylinder body (3), wherein an annular baffle plate (4) is fixedly sleeved on the outer wall of the upper cylinder body (3), the outer wall of the annular baffle plate (4) is fixedly connected to the inner wall of the outer tank body (1), and the first end of the feed pipe (2) is positioned between the outer wall of the upper cylinder body (3) and the inner wall of the outer tank body (1);

the baffle (5) is fixedly connected to the inner wall of the outer tank body (1), an oil through hole (6) for oil to leak down is formed in the baffle (5), and the baffle (5) is located below the upper cylinder body (3).

2. The oil and gas separator bowl structure of claim 1, further comprising:

lower barrel (7), the bottom fixed connection of lower barrel (7) is in on the top surface of baffle (5), be provided with through-hole (9) on the top surface of baffle (5), through-hole (9) are located the inboard of lower barrel (7), the external diameter of lower barrel (7) is less than the internal diameter of last barrel (3).

3. The oil-gas separation cylinder structure according to claim 2, characterized in that the lower cylinder (7) is located below the upper cylinder (3).

4. The oil and gas separator bowl structure of claim 1, further comprising:

the oil outlet pipe (8), the first end of oil outlet pipe (8) passes the lateral wall of outer jar body (1) and pass baffle (5) stretch to the below of baffle (5), the second end of oil outlet pipe (8) is used for extracting fluid.

5. The oil-gas separation cylinder structure according to claim 4, wherein the partition plate (5) is provided with perforations (10), and the oil outlet pipe (8) passes through the perforations (10).

6. The oil and gas separation cartridge structure of claim 4, wherein the second end of the oil outlet pipe (8) is provided with a flange (12).

7. The oil-gas separation cylinder structure according to claim 1, wherein the cross-sectional area of the portion of the feed pipe (2) penetrating into the outer tank (1) decreases in sequence from one end close to the inner wall of the outer tank (1) to one end far from the inner wall of the outer tank (1).

8. The oil-gas separation cylinder structure according to claim 1, wherein the plurality of oil through holes (6) are uniformly provided along the circumferential direction of the separator (5).

9. The oil and gas separator bowl structure of claim 1, further comprising:

the sewage draining pipe (11) is arranged at the bottom of the outer tank body (1) and is communicated with the inside of the outer tank body (1).

10. A fuel injection screw compressor comprising the oil and gas separation cartridge structure of any one of claims 1-9.