An integrated oil separator based on a central single-shaft mounting

Abstract

The utility model discloses a kind of integrated oil separator based on center type single-shaft installation, belong to refrigeration heat exchange system technical field.It includes shell body, shell inner processing oil gas mixture's inner chamber, integrated pipeline structure in inner chamber bottom, and shell top's air intake shunt component;Inner chamber contains left processing cavity, right processing cavity and middle cavity, and stainless steel braided filter screen is arranged between cavities.Integrated pipeline structure is composed of coaxial outer tube, inner tube, and inner tube is connected with sealing groove's connecting flange and extends into middle cavity by penetrating shell bottom, and outer tube is welded with shell bottom, and forms oil storage cavity with inner tube, and outer tube is equipped with integrated oil outlet;Air intake shunt component is "air intake pipe+three-way+branch pipe" or "air intake pipe+stainless steel flat plate shunt plate".The utility model integrates function, simplifies assembly, reduces leakage, reduces resistance, compact structure, adapts refrigeration equipment, improves system efficiency and reliability.

Description

Technical Field

[0001] This article relates to an integrated oil separator based on a centrally mounted single shaft. Background Technology

[0002] Oil separators are one of the core functional components of refrigeration heat exchange systems. In existing technologies, the gas outlet and oil outlet of oil separators are usually designed independently. The gas outlet function is mostly achieved by a separate exhaust pipe, while the oil storage function relies on a separate oil storage tank. Finally, with the assistance of flanges and connecting parts, the oil separator is installed on the surface of the condenser or other equipment.

[0003] like Figure 1 As shown, in existing horizontal oil separators, the independent air outlet is connected via a flange, and the independent oil outlet is separately located in the middle of the overall horizontal oil separator. Then, an auxiliary support is installed at a position symmetrical to the independent air outlet to complete the fixed installation of the horizontal oil separator. This design has the following drawbacks:

[0004] 1. Complex structure and high assembly difficulty: Installation is troublesome, each independent component requires additional connectors, resulting in a large number of parts, complicated assembly process, and low production efficiency.

[0005] Second, high risk of leakage: There are sealing gaps at the connection points. During long-term operation, the seals are prone to failure due to vibration and temperature changes, which can lead to oil and gas leakage, affect equipment efficiency, or even cause malfunctions.

[0006] 3. High flow resistance: The airflow channels between independent components have multiple turns, which easily generate eddies, increase gas flow resistance, and reduce the refrigerant circulation efficiency in the system.

[0007] 4. Large space occupation: The split layout requires more installation space, which is not conducive to the miniaturization design of oil separators and makes it difficult to adapt to compact refrigeration / air conditioning equipment. Utility Model Content

[0008] Overcoming the shortcomings of existing oil separators, such as "complex structure, difficult assembly, high risk of leakage, large flow resistance, and large space occupation", this invention integrates "air outlet channel, oil storage chamber, and installation structure" to achieve simplified assembly, reduced leakage, reduced resistance, and space saving.

[0009] An integrated oil separator based on a centrally mounted single shaft includes an outer shell and an inner cavity for an oil-gas mixture within the outer shell. The inner cavity includes multiple independent chambers, among which at least one left processing chamber, one right processing chamber, and one intermediate chamber are included.

[0010] A left separation filter is provided between the left processing chamber and the middle chamber, and a right separation filter is provided between the right processing chamber and the middle chamber;

[0011] The bottom of the intermediate cavity is provided with an integrated pipe structure, which includes an outer pipe and an inner pipe. The inner pipe passes through the outer shell, and its bottom is connected to a connecting flange. The top of the inner pipe extends into the interior of the intermediate cavity. The upper end of the outer pipe is welded to the outer shell. An annular oil storage cavity is formed between the outer pipe and the inner pipe. The top of the oil storage cavity is connected to the interior of the outer shell. An integrated oil outlet is provided on the side of the oil storage cavity.

[0012] There are two specific chamber division methods. The first method is: the top of the outer shell is provided with an air inlet pipe, the bottom of which is connected to a three-way valve, and the left and right outlets of the three-way valve are respectively connected to a left branch pipe and a right branch pipe.

[0013] The left and right separation filters are the same size as the inner cavity of the outer shell, and directly divide the inner cavity of the outer shell into the left processing cavity, the right processing cavity and the middle cavity. At this time, the outlets of the left and right branch pipes are located in the left and right processing cavities, respectively.

[0014] The second type is: the top of the outer shell is provided with an air inlet pipe, and a flow divider is provided below the outlet of the air inlet pipe. The flow divider divides the oil-gas mixture to be processed into a left path and a right path.

[0015] Both the left and right separation filters are located on the lower surface of the flow divider plate, and together with the flow divider plate, they directly divide the inner cavity of the outer casing into the left processing cavity, the right processing cavity, and the middle cavity. At this time, the left and right paths flow into the left and right processing cavities, respectively.

[0016] Furthermore, the flow divider is a flat plate structure made of stainless steel. The flat plate structure of the flow divider allows the oil-gas mixture falling from the intake pipe to be evenly dispersed horizontally, while also preventing the oil-gas mixture from directly impacting the separation filter.

[0017] Furthermore, a sealing groove is provided on the end face of the connecting flange, and an oil-resistant rubber sealing ring is installed in the sealing groove. This avoids refrigerant loss and liquid leakage due to leakage, while reducing the replacement frequency of sealing components and improving the long-term operational stability of the oil separator.

[0018] Furthermore, the left and right separation filters are stainless steel woven filters with a pore size of 0.1-0.5mm. The woven structure of the stainless steel woven filter has high mechanical strength and can withstand the impact pressure of the oil-gas mixture flow. The 0.1-0.5mm pore size design can accurately match the particle size range of oil droplets in the refrigeration system, which can effectively intercept oil droplets without causing excessive resistance to the flow of refrigerant gas.

[0019] Furthermore, the outer casing is a cylindrical sealed shell made of 304 or 316 stainless steel. The cylindrical structure allows for more even stress distribution on the outer casing, effectively withstanding the internal pressure during the operation of the refrigeration system.

[0020] Furthermore, the centerline of the integrated piping structure coincides with the center of gravity axis of the integrated oil separator. This design makes the integrated piping structure the "central load-bearing axis" of the oil separator. On the one hand, during installation, a single-axis fixation can be achieved simply by connecting the bottom flange, eliminating the need for additional auxiliary supports to adjust the center of gravity and simplifying the installation process. On the other hand, during operation, system vibrations are evenly transmitted along the central axis, avoiding increased local vibrations caused by center of gravity shift, reducing stress concentration at the welds between the inner and outer pipes and the outer casing, and preventing weld cracking.

[0021] Beneficial effects:

[0022] Compared with existing oil separators, this integrated oil separator does not require additional independent oil storage tanks and auxiliary supports, greatly reducing the number of parts. Assembly only requires fixing through connecting flanges and connecting the air inlet pipe and oil outlet, significantly improving production and installation efficiency.

[0023] Meanwhile, the design of the left and right processing chambers and the middle chamber in the inner cavity, together with the left and right separation filters, combined with the three-way or diverter plate, realizes the uniform distribution of the oil-gas mixture, increases the contact area between the oil-gas and the filter, efficiently intercepts oil droplets, and the separated oil can flow smoothly into the oil storage chamber and be stably returned through the oil outlet to ensure the purity requirements of the refrigerant.

[0024] Finally, the inner tube is arranged along the axis of the outer casing, forming an airflow channel of "intake diversion - filter separation - intermediate cavity convergence - inner tube discharge", reducing airflow turns and turbulence, and lowering refrigerant flow resistance to save energy. The overall structure is compact and can be adapted to various refrigeration equipment, especially meeting the installation requirements of compact equipment. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of an existing oil separator and its installation method.

[0026] Figure 2 This is a schematic diagram of the internal structure of an integrated oil separator based on a centrally mounted single shaft, as shown in Embodiment 1.

[0027] Figure 3 This is a schematic diagram of the internal structure of an integrated oil separator based on a centrally mounted single shaft, as shown in Embodiment 2.

[0028] In the diagram: 1. Horizontal oil separator, 2. Auxiliary support, 3. Independent oil outlet, 4. Independent air outlet, 5. Outer shell, 6. Air inlet pipe, 7. Left branch pipe, 8. Left processing chamber, 9. Left separation filter, 10. Inner pipe, 11. Outer pipe, 12. Integrated oil outlet, 13. Diverter plate. Detailed Implementation

[0029] To enhance understanding of this utility model, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. These embodiments are only used to explain the present utility model and do not constitute a limitation on the scope of protection of the present utility model.

[0030] Example 1: As Figure 2 As shown, the integrated oil separator includes an outer shell 5, and an inner cavity for processing oil-gas mixtures is provided inside the outer shell 5. The inner cavity includes a left processing chamber 8, a right processing chamber, and an intermediate chamber. A left separation filter 9 is provided between the left processing chamber 8 and the intermediate chamber, and a right separation filter is provided between the right processing chamber and the intermediate chamber. Both the left separation filter 9 and the right separation filter are the same size as the inner cavity of the outer shell 5, and together they divide the inner cavity into the left processing chamber 8, the right processing chamber, and the intermediate chamber.

[0031] An integrated piping structure is located at the bottom of the intermediate cavity. This structure includes an inner pipe 10 and an outer pipe 11. The inner pipe 10 passes through the outer shell 5, its bottom is connected to a connecting flange, and its top extends into the intermediate cavity. The upper end of the outer pipe 11 is welded to the outer shell 5. An annular oil storage cavity is formed between the outer pipe 11 and the inner pipe 10. The top of the oil storage cavity is connected to the inside of the outer shell 5. An integrated oil outlet 12 is located on the side of the oil storage cavity. An air inlet pipe 6 is located at the top of the outer shell 5. The bottom of the air inlet pipe 6 is connected to a tee. The left and right outlets of the tee are connected to a left branch pipe 7 and a right branch pipe, respectively. The outlet of the left branch pipe 7 is located in the left processing cavity 8, and the outlet of the right branch pipe is located in the right processing cavity. During installation, the integrated piping structure can be directly installed on top of the condenser.

[0032] Work process:

[0033] The oil-gas mixture enters from the inlet pipe 6, is split into the left branch pipe 7 and the right branch pipe through the three-way valve, and flows into the corresponding processing chamber. When passing through the filter screen, the oil droplets are intercepted and fall to the bottom of the intermediate chamber under gravity. After filtration, the refrigerant gas enters the intermediate chamber and is discharged through the inner pipe 10. The oil at the bottom of the intermediate chamber flows into the oil storage chamber and is returned through the integrated oil outlet 12.

[0034] Example 2: Figure 3 As shown,

[0035] This embodiment differs from Embodiment 1 only in the intake splitting structure; the specifications, connection methods, and working processes of the other components are the same: the bottom of the intake pipe 6 is not equipped with a tee, but instead a welded flat splitting plate 13. The edge of the splitting plate is welded to the inner wall of the outer shell, splitting the oil-gas mixture into left and right paths, which flow into the left and right processing chambers respectively; the left and right separation filters are fixed to the lower surface of the splitting plate, and together with the splitting plate, they separate the inner chambers.

[0036] During operation, the oil-gas mixture is discharged from the intake pipe 6 and falls vertically to the upper surface of the diverter plate 13. After being guided by the diverter plate 13, it is divided into left and right paths in the horizontal direction and flows into the left processing chamber 8 and the right processing chamber, respectively. The subsequent oil-gas separation, refrigerant discharge and lubricating oil recovery process is completely consistent with that in Example 1.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An integrated oil separator based on a centrally mounted single shaft, characterized in that, The device includes an outer shell and an inner cavity containing an oil-gas mixture within the outer shell. The inner cavity includes multiple independent chambers, among which at least one left processing chamber, one right processing chamber, and one intermediate chamber are included. A left separation filter is provided between the left processing chamber and the middle chamber, and a right separation filter is provided between the right processing chamber and the middle chamber; The bottom of the intermediate cavity is provided with an integrated pipe structure, which includes an outer pipe and an inner pipe. The inner pipe passes through the outer shell, and the bottom of the inner pipe is connected to a connecting flange. The top of the inner pipe extends into the interior of the intermediate cavity. The upper end of the outer pipe is welded to the outer shell. An annular oil storage cavity is formed between the outer pipe and the inner pipe. The top of the oil storage cavity is connected to the interior of the outer shell. An integrated oil outlet is provided on the side of the oil storage cavity.

2. An integrated oil separator based on a centrally mounted single shaft, as described in claim 1, is characterized in that... The top of the outer casing is provided with an air intake pipe, the bottom of which is connected to a tee, and the left and right outlets of the tee are respectively connected to a left branch pipe and a right branch pipe. The left and right separation filters are the same size as the inner cavity of the outer shell, and directly divide the inner cavity of the outer shell into the left processing cavity, the right processing cavity and the middle cavity. At this time, the outlets of the left and right branch pipes are located in the left and right processing cavities, respectively.

3. An integrated oil separator based on a centrally mounted single shaft, as described in claim 1, is characterized in that... The top of the outer casing is provided with an air inlet pipe, and a flow divider is provided below the outlet of the air inlet pipe. The flow divider divides the oil-gas mixture to be processed into a left path and a right path. Both the left and right separation filters are located on the lower surface of the flow divider plate, and together with the flow divider plate, they directly divide the inner cavity of the outer casing into the left processing cavity, the right processing cavity, and the middle cavity. At this time, the left and right paths flow into the left and right processing cavities, respectively.

4. An integrated oil separator based on a centrally mounted single shaft, as described in claim 3, is characterized in that... The diverter plate is a flat plate structure made of stainless steel.

5. An integrated oil separator based on a centrally mounted single shaft, as described in claim 2 or 3, characterized in that, The connecting flange end face is provided with a sealing groove, and an oil-resistant rubber sealing ring is provided in the sealing groove.

6. An integrated oil separator based on a centrally mounted single shaft, as described in claim 2 or 3, characterized in that, The left and right separation filters are stainless steel woven filters with a pore size of 0.1-0.5mm.

7. An integrated oil separator based on a centrally mounted single shaft, as described in claim 2 or 3, characterized in that, The outer shell is a cylindrical sealed shell made of 304 stainless steel or 316 stainless steel.

8. An integrated oil separator based on a centrally mounted single shaft according to claim 2 or 3, characterized in that, The centerline of the integrated pipeline structure coincides with the center of gravity axis of the integrated oil separator.

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