CN210486190U

CN210486190U - Screw type refrigerating unit

Info

Publication number: CN210486190U
Application number: CN201921598010.4U
Authority: CN
Inventors: 乔德明
Original assignee: Jiangxi Jingwei Refrigeration Equipment Co Ltd
Current assignee: Jiangxi Jingwei Refrigeration Equipment Co Ltd
Priority date: 2019-09-24
Filing date: 2019-09-24
Publication date: 2020-05-08
Anticipated expiration: 2029-09-24

Abstract

The utility model relates to a refrigeration plant technical field specifically is a screw refrigerating unit, including screw compressor, screw compressor welds the support, and support and oil separator outer wall weld mutually, the first guide plate of oil separator inner wall fixed connection, first guide plate below are equipped with the second guide plate, and the side of first guide plate and second guide plate is equipped with the silk screen baffle, and the silk screen baffle is equipped with the filter screen crown plate including accepting board, rib, first metal mesh and second metal mesh, separator outlet flange below, filter screen crown plate inner wall fixed connection high-efficient oil-gas separation filter screen. The beneficial effects are that: the utility model discloses a horizontal design, area is little, and easy split is maintained, smugglies the gas of lubricating oil secretly and can carry out cubic oil-gas separation, can reduce the work load of high-efficient oil-gas separation filter screen to reduce high-efficient oil-gas separation filter screen cleaning frequency, the gas smuggles lubricating oil secretly very lowly, can effectively improve the refrigerating output, and whole unit refrigeration effect is obvious.

Description

Screw type refrigerating unit

Technical Field

The utility model relates to a refrigeration plant technical field specifically is a screw refrigerating unit.

Background

The oil separator is used for separating lubricating oil carried in the exhaust gas of the screw compressor, so that the high-pressure gas refrigerant entering the condenser is purified, the adverse effect of a lubricating oil film on heat transfer is reduced, and the consumption of the lubricating oil is reduced. In the prior art, the oil separator mainly adopts a high-efficiency oil-gas separation filter screen or a filter element to separate lubricating oil, and the high-efficiency oil-gas separation filter screen or the filter element has large workload, so that the replacement frequency is high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a screw refrigerating unit to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a screw refrigerating unit comprises a screw compressor, wherein the screw compressor is provided with an exhaust flange, the exhaust flange is connected with an oil-gas mixing pipeline, the screw compressor is welded with a support, the support is welded with the outer wall of an oil separator, the oil separator is welded with a separator inlet flange, a separator outlet flange and an oil discharge pipe, the oil-gas mixing pipeline is connected with the separator inlet flange through a flange, the inner wall of the oil separator is fixedly connected with a first guide plate, a second guide plate is arranged below the first guide plate, a silk screen baffle is arranged beside the first guide plate and the second guide plate and comprises a bearing plate, a rib, a first metal net and a second metal net, the bearing plate is fixedly connected with the inner wall of the oil separator, the bearing plate is fixedly connected with the rib, the front side and the rear side of the rib are both welded with the first metal net and the second metal net, and a filter screen ring plate is arranged below the separator outlet flange, and the inner wall of the filter screen ring plate is fixedly connected with a high-efficiency oil-gas separation filter screen.

Preferably, the first guide plate and the second guide plate are vertically and symmetrically distributed about the horizontal central axis of the inlet flange of the separator, and the included angle between the first guide plate and the horizontal plane is not more than degrees.

Preferably, the second guide plate is provided with a plurality of positioning screws in a penetrating manner, each positioning screw is in threaded connection with two nuts, and the two nuts are respectively abutted against the front side wall and the rear side wall of the second guide plate.

Preferably, the ribs are long strips and three, and the three ribs are vertically arranged in parallel at equal intervals.

Preferably, the first metal net and the second metal net are formed by interweaving stainless steel metal wires, the first metal net is located on the outermost side of the screen mesh baffle, and the aperture of the mesh of the first metal net is larger than that of the mesh of the second metal net.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model adopts a horizontal design, the occupied area is small, the disassembly and the maintenance are easy, the gas carrying with the lubricating oil can be carried out for three times of oil-gas separation, the work load of the high-efficiency oil-gas separation filter screen can be reduced, thereby the cleaning frequency of the high-efficiency oil-gas separation filter screen is reduced, the gas carrying with the lubricating oil is very low, the refrigerating output can be effectively improved, and the refrigerating effect of the whole unit is obvious;

2. the ribs are used as frameworks of the screen mesh baffle and used for bearing the first metal mesh and the second metal mesh and maintaining the shapes of the first metal mesh and the second metal mesh, so that the first metal mesh and the second metal mesh are prevented from bending under the impact of high-pressure air flow.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic diagram of the structure of the oil separator of the present invention;

fig. 3 is an assembly view of the middle screen baffle of the present invention.

In the figure: the oil-gas separator comprises a screw compressor 1, an exhaust flange 2, an oil-gas mixing pipeline 3, a support 4, an oil separator 5, a separator inlet flange 6, a separator outlet flange 7, an oil discharge pipe 8, a first guide plate 9, a second guide plate 10, a positioning screw 11, a nut 12, a bearing plate 13, ribs 14, a first metal mesh 15, a second metal mesh 16, a filter screen ring plate 17 and a high-efficiency oil-gas separation filter screen 18.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 3, the present invention provides a technical solution: the utility model provides a screw refrigerating unit, includes screw compressor 1, and screw compressor 1 is equipped with

exhaust flange

2, and 2 flange joint oil-gas mixture pipeline 3 of exhaust flange, screw compressor 1's organism shell welding has support 4, and the support welds with 5 outer walls of oil separator mutually, and 5 welding of oil separator have separator import flange 6, separator export flange 7 and oil drain pipe 8, are equipped with the stop valve on the oil drain pipe 8. The oil-gas mixing pipeline 3 is connected with a separator inlet flange 6 through a flange, namely high-pressure gas mixed with lubricating oil enters the oil separator 5 through the oil-gas mixing pipeline 3.

The inner wall of the oil separator 5 is fixedly connected with a first guide plate 9, a second guide plate 10 is arranged below the first guide plate 9, the first guide plate 9 and the second guide plate 10 are distributed in an up-down symmetrical mode about the horizontal central axis of the inlet flange 6 of the separator, and the included angle between the first guide plate 9 and the horizontal plane is 20 degrees. As shown in fig. 2, a tapered channel is formed between the first guide plate 9 and the second guide plate 10, when the high-pressure gas passes through the first guide plate 9 and the second guide plate 10, a first oil-gas separation occurs, because the first guide plate 9 and the second guide plate 10 have a tilted design, part of the gas carrying with the lubricating oil strikes the first guide plate 9 and the second guide plate 10, so that the lubricating oil is attached to the first guide plate 9 and the second guide plate 10, and the lubricating oil on the first guide plate 9 finally falls onto the second guide plate 10 under the action of gravity.

Two positioning screws 11 penetrate through the second guide plate 10, each positioning screw 11 is in threaded connection with two nuts 12, and the two nuts 12 are respectively abutted to the front side wall and the rear side wall of the second guide plate 10. The second baffle 10 is constrained on the positioning screw 11 by two nuts 12, as shown in fig. 2, a gap exists between the second baffle 10 and the right elliptical head of the oil separator 5, and the lubricating oil collected on the second baffle 10 can fall to the bottom of the oil separator 5 along the gap.

The side of first guide plate 9 and second guide plate 10 is equipped with the silk screen baffle, and the silk screen baffle is including accepting board 13, rib 14, first metal mesh 15 and second metal mesh 16, accepts

board

13 and 5 inner walls fixed connection of oil separator, accepts board 13 fixed connection rib 14, and rib 14 is rectangular shape and is equipped with threely, and three rib 14 is vertical equidistant parallel arrangement. The front side and the rear side of each rib 14 are welded with a first metal net 15 and a second metal net 16, the first metal nets 15 and the second metal nets 16 are formed by interweaving stainless steel metal wires, the first metal nets 15 are located on the outermost sides of the wire mesh baffles, and the mesh hole diameters of the first metal nets 15 are larger than those of the second metal nets 16.

The ribs 14 serve as a framework of the wire mesh baffle plate, and are used for bearing the first metal mesh 15 and the second metal mesh 16 and maintaining the shapes of the first metal mesh 15 and the second metal mesh 16, so that the first metal mesh 15 and the second metal mesh 16 are prevented from bending under the impact of high-pressure air flow. When the gas carrying lubricating oil passes through the wire mesh baffle, secondary oil-gas separation occurs, due to the inertia effect of oil mist flow, the oil mist collides with the filaments of the first metal mesh 15 and the second metal mesh 16 and is attached to the surfaces of the filaments, the oil mist forms larger droplets by the diffusion and gravity settling effects of the oil mist, the droplets flow to the junction of the two filaments along the filaments, the wettability of the filaments, the liquid surface tension and the capillary action of the filaments enable the droplets to become larger and larger, and the droplets are separated from the filaments and fall to the bottom of the oil separator 5 until the accumulated droplets are larger until the gravity generated by the droplets exceeds the lifting force of the gas.

The lower side of the separator outlet flange 7 is provided with a filter screen ring plate 17, the filter screen ring plate 17 is welded with the inner wall of the oil separator 5, the inner wall of the filter screen ring plate 17 is fixedly connected with a high-efficiency oil-gas separation filter screen 18, the oil-gas separation filter screen 18 is a filter screen formed by weaving superfine glass fibers, the oil-gas separation filter screen has the advantages of good oil removing effect, long service life and small pressure drop, when the gas carrying lubricating oil passes through the high-efficiency oil-gas separation filter screen 18, the third oil-gas separation occurs, the oil content in the gas is reduced to (^-6。

In conclusion, the oil separator 5 is designed in a horizontal mode and is matched with the screw compressor 1, the occupied area is small, and the oil separator is easy to disassemble and maintain. In the oil separator 5, the gas carrying the lubricating oil can be subjected to oil-gas separation for three times, wherein the first two oil-gas separations reduce the workload of the high-efficiency oil-gas separation filter screen 18, thereby reducing the cleaning frequency of the high-efficiency oil-gas separation filter screen 18. The high-pressure gas treated by the oil separator 5 has very low entrainment of lubricating oil, so that the refrigerating capacity can be effectively improved, and the refrigerating effect of the whole unit is improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a screw refrigerating unit, includes screw compressor (1), screw compressor (1) is equipped with exhaust flange (2), exhaust flange (2) flange joint oil gas hybrid pipeline (3), screw compressor (1) welding has support (4), the support welds mutually with oil separator (5) outer wall, oil separator (5) welding has separator import flange (6), separator export flange (7) and oil extraction pipe (8), oil gas hybrid pipeline (3) flange joint separator import flange (6), its characterized in that: first guide plate (9) of oil separator (5) inner wall fixed connection, first guide plate (9) below is equipped with second guide plate (10), and the side of first guide plate (9) and second guide plate (10) is equipped with the silk screen baffle, the silk screen baffle is including accepting board (13), rib (14), first metal mesh (15) and second metal mesh (16), accept board (13) and oil separator (5) inner wall fixed connection, accept board (13) fixed connection rib (14), first metal mesh (15) and second metal mesh (16) have all been welded to the front side and the rear side of rib (14), separator export flange (7) below is equipped with filter screen crown plate (17), filter screen crown plate (17) inner wall fixed connection high-efficient oil-gas separation filter screen (18).

2. The screw chiller of claim 1, wherein: the first guide plate (9) and the second guide plate (10) are symmetrically distributed up and down about the horizontal central axis of the inlet flange (6) of the separator, and the included angle between the first guide plate (9) and the horizontal plane is not more than 20 degrees.

3. The screw chiller of claim 1, wherein: the second guide plate (10) is provided with a plurality of positioning screws (11) in a penetrating mode, each positioning screw (11) is in threaded connection with two nuts (12), and the two nuts (12) are respectively connected with the front side wall and the rear side wall of the second guide plate (10) in a butting mode.

4. The screw chiller of claim 1, wherein: the ribs (14) are long strips and are three, and the three ribs (14) are vertically arranged in parallel at equal intervals.

5. The screw chiller of claim 1, wherein: the first metal net (15) and the second metal net (16) are formed by interweaving stainless steel metal wires, the first metal net (15) is located on the outermost side of the wire mesh baffle, and the aperture of the meshes of the first metal net (15) is larger than that of the meshes of the second metal net (16).