Separating device for oil stain and water in refrigerating system

Abstract

The utility model belongs to the technical field of separation of impurities such as oil, water and greasy dirt, and particularly relates to a greasy dirt and water separation device in a refrigerating system. The device comprises a bottom sealing head, an oil-water separator barrel diameter and a top sealing head, wherein the top sealing head, a separator shell, an oil stain inlet, a separation screen, an oil supplementing opening, an oil sight glass, a supporting frame, a hand valve, an oil discharging pipe, a stop valve, the bottom sealing head, an oil supplementing pipe, an oil suction valve, a filter, a refrigerating unit air inlet pipe and a collecting funnel are arranged in the separator shell; according to the utility model, water separation can be carried out under the condition that water enters a refrigerating system which is being installed and a running refrigerating system accidentally (whether water exists or not and the content of water in a refrigerating fluorine system is particularly important), and a mixture of welding slag, oxide skin, dust and refrigerant oil in the system can be removed; various filtering devices of the system are prevented from being blocked, and finally system paralysis and compressor burnout are avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of separation of impurities such as oil, water and oil pollution, and in particular relates to a separation device for oil pollution and water in a refrigeration system. Background Art

[0002] In view of the repair of frozen water inlet of Freon water-cooled condensation (shell and tube water-cooled condenser, water-cooled plate heat exchanger) refrigeration system in cold weather in the north, and other repairs caused by dirt and blockage of refrigeration system (welding slag in the system is not cleaned during installation and fake refrigeration oil, refrigerant, etc.), separation technology is used. Our company has developed a new type of decontamination device with better effect. It saves time and effort for maintenance companies and money for customers. It is a good method that can kill two birds with one stone.

[0003] After the refrigeration system is installed, the mixture of welding slag, oxide scale, dust and refrigeration oil is removed. When the system is installed, the copper pipe is not filled with nitrogen for welding or the copper pipe is not sealed for a long time, the dust is not removed, and the debris is not cleaned after the steel pipe, stainless steel and other metal materials are cut. After the refrigeration system has been running for a period of time, the refrigeration oil turns black. After the black refrigeration oil and the refrigerant are partially mixed, they will block various filtering devices in the system and finally cause the system to paralyze and the compressor to burn. Even if the compressor is replaced with a new one, it will not be used for a long time. After the compressor burns, there are some acidic substances in the system that will cause greater damage to the system. Utility Model Content

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A device for separating oil and water in a refrigeration system comprises a bottom head, a separator shell and a top head, wherein the bottom head is installed with three support frames, an oil drain pipe is arranged below the bottom head, the oil drain pipe is connected with a stop valve, a hand valve is installed at the end of the oil drain pipe, one end of the separator shell is connected with the bottom head, and the other end is connected with the top head, the separator shell is provided with a refrigeration system air intake (the air intake contains water and oil that cannot be used for refrigeration), an oil sight glass, an oil replenishing port (into a refrigeration unit) and a refrigeration unit air intake pipe (refrigerant gas after dehydration and decontamination), and the internal environment of the separation device is at normal temperature.

[0006] The oil inlet (refrigeration system air intake) port, oil replenishment port and oil sight glass are installed on the same side of the separator shell, and the refrigeration unit air intake pipe is installed on the other side. The oil inlet (refrigeration system air intake) port is connected to the separation screen through a pipeline. The separation screen is a semicircular hollow sphere. A number of separation holes are arranged on the separation screen. The refrigeration unit oil replenishment port is connected to the oil replenishment pipe. The oil replenishment pipe is installed below the separation screen. The oil replenishment pipe is connected to the oil suction valve. The other end of the oil suction valve (siphon principle) is connected to the refrigeration unit air intake pipe. The infusion tube is "Z" shaped. One end of the refrigeration unit air intake pipe is connected to a collecting funnel, and the other end is connected to a filter. The collecting funnel is arranged inside the top head.

[0007] There must be no water in the Freon refrigeration system, and the lubricating oil in the refrigeration system must not have other contaminants. The oil must be clean, otherwise it will affect the normal operation of the system.

[0008] Preferably, the pipeline of the oil inlet is in a "7" shape, and the interior of the pipeline of the oil inlet is connected to a separation screen. After the low-temperature pressurized oil-sewage mixture passes through the separation screen, the Freon at room temperature vaporizes upward, and the oil and water flow downward into the bottom head.

[0009] Preferably, a plurality of filter cottons and absorbent cottons are distributed inside the filter, and when the Freon and lubricating oil pass through, the impurities and moisture in the mixture are sucked out and filtered.

[0010] Preferably, the oil replenishing pipe runs through the separator housing, with one end connected to the oil replenishing port and the other end connected to the oil suction valve. The lubricating oil enters through the oil replenishing port, flows through the oil replenishing pipe to the oil suction valve, and the oil suction valve sucks the oil upward to send the lubricating oil into the air inlet pipe of the refrigeration unit.

[0011] Preferably, the horizontal height of the oil replenishing port is higher than the connection between the oil replenishing pipe and the oil suction valve. When replenishing oil, since the oil replenishing pipe is in an inclined state, the lubricating oil will flow along the oil replenishing pipe to the oil suction valve.

[0012] Preferably, the separator housing (2) is a hollow cylinder, and the separator housing (2) is welded to the top head (1) and the bottom head (11).

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The utility model can remove the mixture of welding slag, oxide scale, dust and refrigeration oil after the refrigeration system is installed. It has a simple structure, saves installation space and saves costs.

[0015] 2. When water enters the refrigeration system (water cooling system or chiller), it can remove water and water mixtures in the system to avoid clogging various filtering devices in the system, which will eventually lead to system paralysis and compressor burning. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the main structure of the utility model;

[0018] Figure 3 It is a bottom view of the utility model.

[0019] Notes on the figure numbers: 1. Top head; 2. Separator housing; 3. Oil inlet; 4. Separation screen; 5. Oil replenishing port; 6. Oil sight glass; 7. Support frame; 8. Hand valve; 9. Oil drain pipe; 10. Stop valve; 11. Bottom head; 12. Oil replenishing pipe; 13. Oil suction valve; 14. Filter; 15. Refrigeration unit air inlet pipe; 16. Collecting funnel. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figure 1-3 A device for separating oil and water in a refrigeration system is shown, and an oil drain pipe 9 is arranged below the bottom end cap 11, and the oil drain pipe 9 is connected to the stop valve 10 for discharging accumulated oil. A hand valve 8 is installed at the end of the oil drain pipe 9, and the oil in the separator can be discharged automatically through the hand valve 8. An oil inlet port 3, an oil sight glass 6, an oil replenishing port 5 and an air inlet pipe 15 of the refrigeration unit are arranged on the separator housing 2, and an oil sight glass can be installed on the oil replenishing port 5 to facilitate observation of the flow rate of the lubricating oil. The oil inlet port 3, the oil replenishing port 5 and the oil sight glass 6 are installed on the same side of the separator housing 2, and the air inlet pipe 15 of the refrigeration unit is installed on the other side. The oil inlet port 3 is connected to the separation screen 4 through a pipeline. The separation screen 3 is a semicircular hollow sphere, and a plurality of separation holes are arranged on the separation screen 3. The separation screen 3 is used to separate oil pollution and gasified Freon. The oil replenishing port 5 is connected to the oil replenishing pipe 12, and the oil replenishing pipe 12 is installed below the separation screen 4. The oil replenishing pipe 12 is connected to the oil suction valve 13, and the other end of the oil suction valve 13 is connected to the air inlet pipe 15 of the refrigeration unit. The air inlet pipe 15 of the refrigeration unit is in a "Z" shape. One end of the air inlet pipe 15 of the refrigeration unit is connected to a collecting funnel 16, and the other end is connected to a filter 14. The collecting funnel 14 is arranged inside the top head 1. The lubricating oil in the refrigeration system cannot have other contaminants, and the oil must be clean, otherwise it will affect the normal operation of the system.

[0022] When the low-temperature and low-pressure refrigerant gas or gas-liquid mixture enters the container from the oil inlet 3 and is redispersed and sprayed through the separation screen 4 (most of the refrigerant is vaporized during the spraying process and when it reaches the bottom of the container, which is more obvious under high-temperature conditions), the vaporized refrigerant gas rises and expands and enters from the refrigeration unit inlet pipe 15 (because the oil-dirty mixture cannot be vaporized, it sinks to the bottom and waits to be released from the oil drain pipe 9), comes out from the manual valve 8 and enters the compressor for recirculation. After a period of circulation (the equipment is turned on for about 2 hours, and the sewage is discharged manually / automatically once until clean liquid without dirt is discharged, and the sewage discharge can be stopped. After stopping, the liquid level will gradually rise), the liquid level at the bottom of the bottom head 11 gradually rises, and most of it is an oil-liquid mixture. When it rises above the oil-water sight glass 6, the clean oil-liquid mixture enters the oil suction valve 13 through the oil replenishment port 12, and enters the compressor circulation system through the pot filter 14.

[0023] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for separating oil and water in a refrigeration system, comprising a bottom head (11), a separator shell (2) and a top head (1), wherein one end of the separator shell (2) is connected to the bottom head (11) and the other end is connected to the top head (1), characterized in that: The bottom end cap (11) is provided with three support frames (7). An oil drain pipe (9) is provided below the bottom end cap (11). The oil drain pipe (9) is connected to a stop valve (10). A hand valve (8) is provided at the end of the oil drain pipe (9). An oil inlet (3), an oil sight glass (6), an oil replenishing port (5) and an air inlet pipe (15) of a refrigerating unit are provided on the separator housing (2). The oil inlet (3), the oil replenishing port (5) and the oil sight glass (6) are installed on the same side of the separator housing (2). The air inlet pipe (15) of the refrigerating unit is installed on the other side. The oil inlet (3) and the separation screen (4) are connected by a pipe. The separation screen (4) is a semicircular hollow sphere, and a plurality of separation holes are arranged on the separation screen (4). The oil replenishment port (5) is connected to the oil replenishment pipe (12), and the oil replenishment pipe (12) is installed below the separation screen (4). The oil replenishment pipe (12) is connected to the oil suction valve (13), and the other end of the oil suction valve (13) is connected to the refrigeration unit air intake pipe (15). The refrigeration unit air intake pipe (15) is in a "Z" shape. One end of the refrigeration unit air intake pipe (15) is connected to a collecting funnel (16), and the other end is connected to a filter (14). The collecting funnel (16) is arranged inside the top cover (1).

2. The device for separating oil and water in a refrigeration system according to claim 1, characterized in that: The pipeline of the oil and sewage inlet (3) is in a "7" shape, and the interior of the pipeline of the oil and sewage inlet (3) is connected to the separation screen (4).

3. The device for separating oil and water in a refrigeration system according to claim 1, characterized in that: A plurality of filter cottons and water-absorbing cottons are distributed inside the filter (14).

4. The device for separating oil and water in a refrigeration system according to claim 1, characterized in that: The oil replenishment pipe (12) passes through the separator housing (2), one end of which is connected to the oil replenishment port (5) and the other end of which is connected to the oil suction valve (13).

5. The device for separating oil and water in a refrigeration system according to claim 1, characterized in that: The level of the oil replenishment port (5) is higher than the connection between the oil replenishment pipe (12) and the oil suction valve (13).

6. The device for separating oil and water in a refrigeration system according to claim 1, characterized in that: The separator shell (2) is a hollow cylinder, and the separator shell (2) is welded to the top head (1) and the bottom head (11).

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