Oil leakage prevention system

Abstract

The utility model provides an oil leakage prevention system which is used in an ice maker refrigerating system and aims to solve the technical problem that in an existing ice maker refrigerating system, oil leakage has adverse effects on operation of a compressor unit due to the fact that an oil separator is insufficient in lubricating oil separation effect. The oil leakage prevention system comprises an air inlet assembly, a low-pressure compressor, a high-pressure compressor, an oil separator, an oil return pipeline and an exhaust assembly which are connected with one another, the oil separator comprises a first-stage oil separator and a second-stage oil separator which are connected with one another, and one output end of the first-stage oil separator and one output end of the second-stage oil separator are connected into the oil return pipeline; and the other output end of the secondary oil separator is connected into the exhaust assembly. The secondary oil separator is connected in series in an original refrigerating system, lubricating oil from the primary oil separator is subjected to secondary filtering, the problem of oil leakage is effectively solved, and certain application prospects are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial ice machine refrigeration, in particular to an oil leakage prevention system. Background Art

[0002] In the operation of industrial ice machine refrigeration system, if the refrigerant and the refrigerator lubricant oil are miscible, the lubricant in the refrigeration compressor will be discharged into the condenser in the form of aerosol and droplets along with the refrigerant during the operation of the machine. If the oil separator is not effective or the system is not well designed, it will cause poor separation effect and poor oil return in the system, which is called "oil leakage". That is, when the cooling water temperature is low, the exhaust superheat is not high, so the oil and refrigerant are not completely separated. After the mixture enters the heat exchanger, the low pressure of the unit is low. Even worse, it will cause the expansion valve to be blocked and the unit cannot be started.

[0003] The original technology used a first-stage oil separator. When the equipment was running, the separation effect of the first-stage oil separator decreased, and the operator took fewer control measures, resulting in the lubricating oil directly entering the production system. Under the action of the oil film, the heat exchange efficiency of the evaporator decreased, increasing production costs and reducing the stability of system operation. In addition, the oil level of the unit dropped after the unit leaked oil, and there was a risk of unstoppable operations. At the same time, the lowered oil level led to poor lubrication and possible equipment damage.

[0004] Therefore, the need to study a system to prevent oil leakage is a technical problem that needs to be solved urgently. Utility Model Content

[0005] The purpose of the present invention is to solve the problem in the prior art that only the first-level oil separator is used in the refrigeration system of the ice machine, which causes oil leakage and adversely affects the operation of the compressor unit. The second-level oil separator is connected in series or in parallel at the output end of the first-level oil separator, and the structure of the second-level oil separator is improved, so that the oil-containing gas coming out of the first-level oil separator is fully and efficiently filtered for the second time, thereby effectively solving the common oil leakage problem in the refrigeration system.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] An anti-oil leakage system is used in a refrigerator refrigeration system, comprising an air intake assembly, a low-pressure compressor, a high-pressure compressor, an oil separator, an oil return pipeline and an exhaust assembly which are interconnected. The oil separator comprises at least a primary oil separator and a secondary oil separator which are interconnected. One of the output ends of the primary oil separator and the secondary oil separator is connected to the oil return pipeline, and the other output end of the secondary oil separator is connected to the exhaust assembly.

[0008] The utility model discloses an oil leakage prevention system, which adds a secondary oil separator behind the primary oil separator. The lubricating oil that is not fully separated by the primary oil separator enters the secondary oil separator together with the refrigerant. The lubricating oil carried by the airflow collides with the container wall in the container of the separator by utilizing the different specific gravities of oil and gas. The gas after the preliminary separation is further deoiled by the secondary oil separator and flows out from the top of the secondary oil separator. The bottom of the secondary oil separator is connected to an oil return pipe, and the lubricating oil returns to the low-pressure compressor through the oil return pipe for recycling. The secondary oil separator is arranged in a horizontal position and is pried together with the unit.

[0009] As the preferred technical solution:

[0010] In the above-mentioned oil leakage prevention system, the primary oil separator and the secondary oil separator are connected in series or in parallel via flanges, so as to facilitate maintenance.

[0011] In the above-mentioned anti-oil leakage system, filter elements are respectively arranged on both sides of the filter cartridge of the secondary oil separator, and the filtering accuracy of the filter element is 3~5μm. The purpose of arranging the filter elements on both sides of the filter cartridge is to design the gas filtered by the primary oil separator to enter from the middle and exit from both sides. With this design, the separation area of ​​the secondary oil separator is increased, the separation effect is thorough, and the gas enters from the middle and exits from both sides, which reduces the air flow velocity and makes it easier for the oil droplets to flocculate and separate.

[0012] In the above-mentioned oil leakage prevention system, an exhaust pipe and an oil return pipe are installed at the outlet position of the filter element, wherein the exhaust pipe is connected to the exhaust component, and the oil return pipe is connected to the oil return pipeline.

[0013] In the above-mentioned oil escape prevention system, an oil return pipe is further connected to the lower part of the cavity of the secondary oil separator, and the oil return pipe is connected to the oil return pipeline.

[0014] In the above-mentioned oil leakage prevention system, the secondary oil separator is provided with an observation mirror, and an inspection port is also provided near the filter element to facilitate the replacement of the filter element.

[0015] In the above-mentioned oil leakage prevention system, a filter element is provided on one side of the filter cartridge of the primary oil separator, an oil reservoir is provided on the other side, and an observation mirror is provided on the side close to the oil reservoir. The filtering accuracy of the filter element of the primary oil separator is 3-5 μm.

[0016] The oil escape prevention system as described above further includes a pressure measuring device arranged on the secondary oil separator for checking the operating pressure difference and working status of the secondary oil separator.

[0017] In the above-mentioned oil escape prevention system, a root valve is further arranged on the oil return pipeline close to the secondary oil separator for controlling the separated lubricating oil.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. The oil leakage prevention system of the utility model is to connect a secondary oil separator in series / in parallel behind the primary oil separator in the original -40℃ ice machine refrigeration system, and arrange filter elements on both sides of the oil filter cartridge of the secondary oil separator. In this way, the gas from the primary oil separator adopts the design of entering from the middle and exiting from both sides, so that the separation area of ​​the secondary oil separator is increased and the separation effect is thorough. The gas enters from the middle and exits from both sides to ease the air flow speed and make it easy to separate the oil droplets.

[0020] 2. Although the primary oil separator and the secondary oil separator of the anti-oil leakage system of the utility model are similar in function, the secondary oil separator removes the oil storage function while retaining the separation function of the primary oil separator. Compared with the prior art which only sets the primary oil separator, the primary oil separator is designed to save space because the unit needs to be skidded, so the lubricating oil storage and oil separation are set together, while the secondary oil separator of the utility model has a pure separation function, so there is no oil storage function design, and the horizontal arrangement and the main engine system skid can effectively eliminate the oil leakage of the system.

[0021] 3. The connection design of the primary oil separator and the secondary oil separator of the oil escape prevention system of the utility model is series or parallel, and flange connection is adopted to facilitate maintenance and repair.

[0022] 4. The primary oil separator and the secondary oil separator of the oil leakage prevention system of the utility model are both provided with observation mirrors, which can facilitate the inspection personnel to timely find out whether the unit is leaking oil.

[0023] 5. The primary oil separator and the secondary oil separator of the oil escape prevention system of the utility model are small in size and can be pried together with the machine in design. After being pried together, the overall layout is beautiful. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a structural schematic diagram of an ice machine refrigeration system in the prior art;

[0026] Figure 2It is a structural schematic diagram of the oil escape prevention system of the utility model;

[0027] Figure 3 It is a structural schematic diagram of the two-stage oil separator of the utility model.

[0028] Reference numerals:

[0029] 1-intake assembly; 2-low-pressure compressor; 3-high-pressure compressor; 4-oil separator, 4.1-first-stage oil separator; 4.2-second-stage oil separator; 5-return oil pipeline; 6-exhaust assembly; 7-filter element. DETAILED DESCRIPTION

[0030] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the products of the present invention are conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" 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.

[0034] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0035] The disclosure below provides many different embodiments or examples to realize different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplicity and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0036] The embodiments of the present invention / utility model are described in detail below with reference to the accompanying drawings.

[0037] The structural diagram of the existing ice machine refrigeration system is as follows Figure 1 As shown, it includes an intake component 1, a low-pressure compressor 2, a high-pressure compressor 3, an oil separator 4, an oil return pipeline 5 and an exhaust component 6 connected in series, wherein the oil separator 4 has two output ends, one output end is connected to the return pipeline 5, and the other output end is connected to the exhaust component 6. The return oil pipeline 5 is arranged in the refrigeration system in such a way that the input end is connected to the output end of the oil separator, and the output end is connected to the low-pressure compressor. The function is to allow the oil and gas filtered and separated by the oil and gas separator to enter the oil return pipeline 5 and then flow back to the low-pressure compressor 2, which is consistent with the prior art.

[0038] The oil leakage prevention system of the utility model is applied to the refrigeration system of the ice machine, which is an improvement made on the structure of the existing refrigeration system of the ice machine. Figure 2 As shown, the oil separator 4 includes a primary oil separator 4.1 and a secondary oil separator 4.2 which are connected in series / parallel to each other. The primary oil separator is installed behind the high-pressure compressor, that is, the input end of the primary oil separator 4.1 is connected to the output end of the high-pressure compressor 3, and the secondary oil separator 4.2 is arranged behind the primary oil separator 4.1, and its input end is connected to the output end of the primary oil separator 4.1. The secondary oil separator 4.2 has two output ends, one of which is connected to the return oil pipeline 5, which is consistent with the primary oil separator 4.1, and is used to recycle the separated oil and gas into the low-pressure compressor for recycling. The other output end of the secondary oil separator is connected to the exhaust component.

[0039] The primary oil separator and the secondary oil separator are connected in series or in parallel via flanges.

[0040] The filter cartridges of the secondary oil separator are provided with filter elements 7 on both sides. Figure 3 As shown, an exhaust pipe is installed at the outlet of the filter element and connected to the exhaust assembly 6, as shown in FIG. Figure 1 shown.

[0041] At the filter element outlet positions on both sides of the secondary oil separator, and at the lower part of the cavity of the secondary oil separator, three positions are connected to the oil return pipe, which is connected to the oil return pipeline 5, such as Figure 2 shown.

[0042] An observation mirror is installed on the secondary oil separator to facilitate the staff to observe the oil leakage of the unit.

[0043] There are also inspection ports near the filter elements on both sides of the secondary oil separator for inspection and replacement of the filter elements. The filtration accuracy of the filter elements on both sides of the secondary oil separator is 3~5μm.

[0044] The utility model discloses a first-stage oil separator in an anti-oil leakage system, wherein a filter element is arranged on one side of the filter cartridge, an oil reservoir is arranged on the other side, an observation mirror is arranged on the side close to the oil reservoir, and the diameter of the filter element of the first-stage oil separator is 3-5 μm.

[0045] The anti-oil leakage system of the utility model also includes a pressure measuring device arranged on the secondary oil separator, which is used to check the operating pressure difference and working status of the secondary oil separator. A root valve is also arranged on the oil return pipeline close to the secondary oil separator for controlling the separated lubricating oil.

Claims

1. An anti-oil leakage system, used in a refrigerator refrigeration system, comprises an air intake assembly, a low-pressure compressor, a high-pressure compressor, an oil separator, an oil return pipeline and an exhaust assembly connected to each other, characterized in that: The oil separator includes at least one interconnected primary oil separator and secondary oil separator, one output end of the primary oil separator and the secondary oil separator is connected to the oil return pipeline, and the other output end of the secondary oil separator is connected to the exhaust component.

2. The oil escape prevention system according to claim 1, characterized in that: The primary oil separator and the secondary oil separator are connected in series or in parallel via flanges.

3. The oil escape prevention system according to claim 1, characterized in that: Filter elements are respectively arranged on both sides of the filter cartridge of the secondary oil separator, and the filtering accuracy of the filter element is 3-5 μm.

4. The oil escape prevention system according to claim 3, characterized in that: An exhaust pipe and an oil return pipe are installed at the outlet position of the filter element, wherein the exhaust pipe is connected to the exhaust component, and the oil return pipe is connected to the oil return pipeline.

5. The oil escape prevention system according to claim 4, characterized in that: An oil return pipe is also connected to the lower part of the cavity of the secondary oil separator, and the oil return pipe is connected to the oil return pipeline.

6. The oil escape prevention system according to claim 5, characterized in that: The secondary oil separator is provided with an observation mirror and an inspection port is also provided at a position close to the filter element.

7. The oil escape prevention system according to claim 1, characterized in that: A filter element is arranged on one side of the filter cartridge of the primary oil separator, an oil reservoir is arranged on the other side, and an observation mirror is arranged on the side close to the oil reservoir.

8. The oil escape prevention system according to claim 1, characterized in that: It also includes a pressure measuring device arranged on the secondary oil separator, which is used to check the operating pressure difference and working state of the secondary oil separator.

9. The oil escape prevention system according to claim 1, characterized in that: A root valve is also arranged on the oil return pipeline close to the secondary oil separator for controlling the separated lubricating oil.

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