Exhaust and oil removal device of mechanical piston type compressor

Abstract

The utility model provides an exhaust oil removal device of a mechanical piston type compressor, and belongs to the field of high-pressure hydrogen oil removal. The problem that the filter is broken and cannot be used due to large pressure difference inside and outside the filter when the hydrogen compression system is started is solved. A separation cavity and an oil collection cavity are formed in the separation cylinder; the main filter is arranged in the separation cavity; the air distribution valve is provided with a normally open outlet and a partial pressure outlet, the normally open outlet is connected with the interior of the main filter, and the partial pressure outlet is connected with the auxiliary filter; and after the gas distribution valve is subjected to the acting force of compressed gas, the pressure distribution outlet is gradually closed. The device is mainly used for high-pressure hydrogen oil removal.

Description

Technical Field

[0001] This utility model belongs to the field of high-pressure hydrogen oil removal, and in particular relates to an oil removal device for exhaust gas from a mechanical piston compressor. Background Technology

[0002] In high-pressure hydrogen compression systems, the compressed hydrogen needs to be de-oiled to remove the lubricating oil from the compressor cylinders carried by the compressed gas. However, due to the high system pressure, paper filter elements are difficult to withstand large pressure differentials during startup, which can lead to breakage. However, paper filters are relatively inexpensive compared to other filter materials.

[0003] In summary, a mechanical piston compressor exhaust oil removal device is proposed. Utility Model Content

[0004] In view of this, the present invention aims to propose a mechanical piston compressor exhaust oil removal device to solve the problem that the filter is subjected to a large pressure difference between the inside and outside when the hydrogen compression system is started, which leads to rupture and unusability.

[0005] To achieve the above objectives, this utility model adopts the following technical solution to provide a mechanical reciprocating compressor exhaust oil removal device, comprising:

[0006] The separator has a separation chamber and an oil collection chamber inside; a main filter is installed in the separation chamber; and a gas distribution valve has a normally open outlet and a pressure distribution outlet. The normally open outlet is connected to the inside of the main filter, and the pressure distribution outlet is connected to an auxiliary filter. The gas distribution valve gradually closes the pressure distribution outlet after being subjected to the force of compressed gas.

[0007] Furthermore, the gas distribution valve includes a valve body and a valve core. The valve body is provided with an inlet, a normally open outlet, and a pressure-dividing outlet, and the valve core is disposed inside the valve body.

[0008] Furthermore, the valve core has a protrusion on the side axially close to the normally open outlet to keep the inlet connected to the normally open outlet.

[0009] Furthermore, a spring is provided at the end of the valve core away from the protrusion, and the other end of the spring is connected to the pressure regulating assembly.

[0010] Furthermore, the pressure regulating assembly includes a housing and an adjusting screw, the adjusting screw being threadedly connected to the housing and connected to one end of the spring.

[0011] Furthermore, the outer shell is fixed to the outer wall of the separation cylinder.

[0012] Furthermore, the air inlet of the auxiliary filter is connected to the pressure dividing outlet, and the air outlet of the auxiliary filter is connected to the separation chamber.

[0013] Furthermore, the auxiliary filter is equipped with a filter element assembly.

[0014] Furthermore, the separator cylinder is equipped with a partition plate inside, and the main filter is equipped with a top cover, which is pressed together with the partition plate by a screw.

[0015] Furthermore, the top cover is connected to the normally open outlet.

[0016] Beneficial effects: By setting up a main filter and an auxiliary filter, both filters take in air at the same time during startup. The filtered gas is quickly discharged into the separator through the auxiliary filter, thereby reducing the pressure difference inside and outside the main filter. This prevents the paper filter from breaking due to the high pressure difference during startup. Attached Figure Description

[0017] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of the mechanical piston compressor exhaust oil removal device of this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the exhaust oil removal device for a mechanical piston compressor according to the present invention;

[0020] Figure 3 This is a schematic diagram of the external structure of the exhaust oil removal device for a mechanical piston compressor according to the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of the gas distribution valve described in this utility model;

[0022] Figure 5 This is a front view of the gas distribution valve described in this utility model;

[0023] Figure 6 The present utility model Figure 5 Top sectional view of structure AA;

[0024] Figure 7 This is a schematic diagram of the auxiliary filter described in this utility model;

[0025] Figure 8 The present utility model Figure 7 Top sectional view of the structure at point BB.

[0026] In the diagram: Separator cylinder 1; Divider plate 1-1; Main filter 2; Paper filter element 2-1; Top cover 2-2; Screw 2-3; Air distribution valve 3; Valve housing 3-1; Valve core 3-2; Protrusion 3-3; Inlet 3-4; Normally open outlet 3-5; Pressure-dividing outlet 3-6; Spring 3-7; Housing 3-8; Adjusting screw 3-9; Auxiliary filter 4; Housing 4-1; Air inlet 4-2; Air outlet 4-3; Filter element assembly 4-4; Cylinder cover 5; Air pipe 1 6; Air pipe 2 7; Air inlet pipe 8; Air outlet pipe 9. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present utility model can be combined with each other, and the described embodiments are only some embodiments of the present utility model, not all embodiments.

[0028] It should be noted that the descriptions of "left," "right," "left side," "right side," "upper part," "lower part," "top," and "bottom" in this utility model are defined based on the orientation or positional relationships shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, and are not intended to indicate or imply that the described structure must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0029] In the description of this utility model, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Specific implementation method one:

[0031] Referring to the accompanying drawings, this embodiment provides a mechanical reciprocating compressor exhaust oil removal device, comprising:

[0032] The separator 1 has a separation chamber and an oil collection chamber inside; the main filter 2 is installed in the separation chamber; the gas distribution valve 3 has a normally open outlet 3-5 and a pressure-splitting outlet 3-6. The normally open outlet 3-5 is connected to the inside of the main filter 2, and the pressure-splitting outlet 3-6 is connected to the auxiliary filter 4; wherein, the gas distribution valve 3 gradually closes the pressure-splitting outlet 3-6 after being subjected to the force of compressed gas.

[0033] The compressed hydrogen gas first enters the gas distribution valve 3, then splits into two paths: one enters the main filter 2, and the other enters the auxiliary filter 4. The gas entering the main filter 2 passes through the main filter 2 and then enters the space formed between the separation chamber and the outside of the main filter 2. The gas entering the auxiliary filter 4, after filtration, also enters the space formed between the outside of the main filter 2 and the separation chamber. The gas filtered by the auxiliary filter 4 balances the instantaneous pressure difference inside and outside the main filter 2, preventing damage to the main filter 2. An end cap 5 is fixed to the separation cylinder 1 at the top of the separation chamber.

[0034] In this embodiment, the gas distribution valve 3 includes a valve housing 3-1 and a valve core 3-2. The valve housing 3-1 is provided with an inlet 3-4, a normally open outlet 3-5, and a pressure-dividing outlet 3-6. The valve core 3-2 is disposed inside the valve housing 3-1.

[0035] High-pressure hydrogen enters the valve body 3-1 through inlet 3-4, and leaves the valve body 3-1 through normally open outlet 3-5 and pressure-dividing outlet 3-6 respectively, entering the main filter element 2 and auxiliary filter element 4 respectively.

[0036] In this embodiment, the valve core 3-2 has a protrusion 3-3 on the side axially close to the normally open outlet 3-5, which is used to keep the inlet 3-4 connected to the normally open outlet 3-5.

[0037] The protrusion 3-3 can keep the normally open outlet 3-5 connected to the inlet 3-4 at all times. Alternatively, after gas is supplied, the end face of the valve core 3-2 on the side of the protrusion 3-3 can be pushed by pressure to move the valve core 3-2, thereby closing the pressure-dividing outlet 3-6.

[0038] In this embodiment, a spring 3-7 is provided at the end of the valve core 3-2 away from the protrusion 3-3, and the other end of the spring 3-7 is connected to the pressure regulating component.

[0039] In the initial stage of air intake, spring 3-7 pushes valve core 3-2 to contact valve body 3-1 at the protrusion 3-3 end, keeping normally open outlet 3-5 and pressure-dividing outlet 3-6 in the open state. At the air intake, the pressure at the protrusion 3-3 end is greater than the elastic force of spring 3-7, and valve core 3-2 compresses spring 3-7, gradually closing pressure-dividing outlet 3-6 until the air pressure reaches the maximum.

[0040] In this embodiment, the pressure regulating assembly includes a housing 3-8 and an adjusting screw 3-9. The adjusting screw 3-9 is threadedly connected to the housing 3-8, and the adjusting screw 3-9 is connected to one end of the spring 3-7.

[0041] By rotating the adjusting screw 3-9, the operating pressure and operating speed of the intake valve core 3-2 can be adjusted by compressing the spring 3-7.

[0042] In this embodiment, the outer shell 3-8 is fixed to the outer wall of the separator 1.

[0043] The outer casing 3-8 is fixed to the outside of the separator cylinder 1. The adjusting screw 3-9 and the end of the valve core 3-2 away from the protrusion 3-3 are in contact with the atmosphere. The force on this end of the valve core 3-2 is mainly the thrust of the spring 3-7.

[0044] In this embodiment, the air inlet 4-2 of the auxiliary filter 4 is connected to the pressure dividing outlet 3-6, and the air outlet 4-3 of the auxiliary filter 4 is connected to the separation chamber. High-pressure hydrogen enters the auxiliary filter 4 through the air inlet 4-2, is filtered, and then discharged into the separation chamber through the air outlet 4-3.

[0045] In this embodiment, the auxiliary filter 4 is equipped with a filter element assembly 4-4. The filter element assembly 4-4 is a filter material that can withstand high pressure, allow for rapid passage, and has a small pressure drop, such as a coalescing filter element (PP / PTFE) and (molecular sieve drying).

[0046] In this embodiment, the separator 1 is provided with a partition plate 1-1 inside, and the main filter 2 is provided with a top cover 2-2. The top cover 2-2 and the partition plate 1-1 are pressed together by a screw 2-3.

[0047] The upper side of the partition plate 1-1 is a separation chamber, and the lower side is an oil collection chamber. High-pressure hydrogen gas is filtered by the main filter 2, while the oil remains inside the main filter 2 and is discharged into the oil collection chamber for collection and treatment through manual or automatic control. In this embodiment, the upper cover 2-2 is connected to the normally open outlet 3-5.

[0048] Working principle:

[0049] High-pressure hydrogen enters the gas distribution valve 3 through the inlet pipe 8, and is discharged simultaneously through the normally open outlet 3-5 and the pressure-splitting outlet 3-6 on the gas distribution valve 3. After being discharged through the normally open outlet 3-5, it enters the interior of the main filter 2 through the second gas pipe 7 and the top cover 2-2. After passing through the paper filter element 2-1, the hydrogen is discharged into the separation chamber. Another path is discharged through the pressure-splitting outlet 3-6 and enters the auxiliary filter 4 through the first gas pipe 6. After being filtered inside the auxiliary filter 4, it is discharged into the separation chamber through the outlet 4-3. This balances the internal and external pressure difference of the paper filter 2-1 during startup. When the pressure reaches the preset value, the compressed gas pushes the valve core 3-2 to move, compressing the spring 3-7 and closing the pressure-splitting outlet 3-6. At this time, the main filter element 2 works alone.

[0050] The embodiments of the present invention disclosed above are merely illustrative of the present invention. The embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific implementations described. Many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention.

Claims

1. A mechanical piston compressor exhaust oil removal device, characterized in that, include: The separator (1) has a separation chamber and an oil collection chamber inside; The main filter (2) is disposed in the separation chamber; The gas distribution valve (3) is provided with a normally open outlet (3-5) and a pressure-splitting outlet (3-6). The normally open outlet (3-5) is connected to the inside of the main filter (2), and the pressure-splitting outlet (3-6) is connected to the auxiliary filter (4). Among them, the gas distribution valve (3) gradually closes the pressure distribution outlet (3-6) after being subjected to the force of the compressed gas.

2. The mechanical reciprocating compressor exhaust oil removal device according to claim 1, characterized in that: The gas distribution valve (3) includes a valve body (3-1) and a valve core (3-2). The valve body (3-1) is provided with an inlet (3-4), a normally open outlet (3-5), and a pressure-dividing outlet (3-6). The valve core (3-2) is located inside the valve body (3-1).

3. The mechanical piston compressor exhaust oil removal device according to claim 2, characterized in that: The valve core (3-2) has a protrusion (3-3) on the side axially close to the normally open outlet (3-5) to keep the inlet (3-4) connected to the normally open outlet (3-5).

4. The mechanical piston compressor exhaust oil removal device according to claim 3, characterized in that: The valve core (3-2) has a spring (3-7) at one end away from the protrusion (3-3), and the other end of the spring (3-7) is connected to the pressure regulating assembly.

5. The mechanical reciprocating compressor exhaust oil removal device according to claim 4, characterized in that: The pressure regulating assembly includes a housing (3-8) and an adjusting screw (3-9). The adjusting screw (3-9) is threadedly connected to the housing (3-8) and is connected to one end of the spring (3-7).

6. The mechanical reciprocating compressor exhaust oil removal device according to claim 5, characterized in that: The outer shell (3-8) is fixed to the outer wall of the separator (1).

7. The mechanical reciprocating compressor exhaust oil removal device according to claim 1, characterized in that: The air inlet (4-2) of the auxiliary filter (4) is connected to the pressure dividing outlet (3-6), and the air outlet (4-3) of the auxiliary filter (4) is connected to the separation chamber.

8. The oil removal device for exhaust gas of a mechanical reciprocating compressor according to claim 7, characterized in that: The auxiliary filter (4) is equipped with a filter element group (4-4).

9. The mechanical reciprocating compressor exhaust oil removal device according to claim 1, characterized in that: The separator (1) is provided with a partition plate (1-1) inside, and the main filter (2) is provided with a top cover (2-2). The top cover (2-2) and the partition plate (1-1) are pressed together by a screw (2-3).

10. The oil removal device for exhaust gas of a mechanical reciprocating compressor according to claim 9, characterized in that: The upper cover (2-2) is connected to the normally open outlet (3-5).

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