Gas compressor pipeline, engine and vehicle

Abstract

The utility model relates to the technical field of engines, in particular to a gas compressor pipeline, an engine and a vehicle. The gas compressor pipeline comprises a pipe body and a connecting structure, the pipe body forms a cavity, a first gas inlet is formed in the outer side wall of the pipe body, the connecting structure communicates with the first gas inlet and a gas outlet of the surge valve, a second gas inlet is formed in the outer side wall of the connecting structure, and the second gas inlet communicates with a gas outlet pipe of the oil-gas separator. The connecting structure is provided with a negative pressure area, and at least part of the second air inlet communicates with the negative pressure area. The gas compressor pipeline comprises a pipe body and a connecting structure, the connecting structure is provided with a negative pressure area, and at least part of the second gas inlet is communicated with the negative pressure area, so that when negative pressure is generated in the negative pressure area, gas in the second gas inlet is sucked into the negative pressure area of the connecting structure and flows into the negative pressure area; and gas flowing out of the oil-gas separator can enter the pipe main body, so that the gas flow blocking of the gas outlet of the oil-gas separator is avoided, and the pressure of the crankcase is ensured to be negative pressure.

Description

TECHNICAL FIELD

[0001] The utility model relates to engine technical field especially relates to a compressor pipeline, engine and vehicle. BACKGROUND

[0002] The natural gas engine adopts the crankcase closed circulation, and in order to improve the surge noise caused by the sudden closing of the air throttle, the natural gas engine is arranged with the surge valve, as shown in the figure, the compressor pipeline includes the pipe main body 1, the surge valve air inlet pipe 4 and the oil gas separator air outlet pipe 5, wherein the cavity of pipe main body 1 is communicated with the surge valve air inlet pipe 4 and the oil gas separator air outlet pipe 5 respectively, and the surge valve air inlet pipe 4 and the oil gas separator air outlet pipe 5 are arranged at different positions of pipe main body 1 respectively, the gas discharged after the opening of surge valve 6 enters into the supercharger through pipe main body 1, however the pressure of the gas flowed out of surge valve 6 is relatively high, which causes the pressure increase in pipe main body 1, and it will lead to the air flow obstruction of oil gas separator air outlet pipe 5, thereby causing the pressure of crankcase to become positive pressure, and there is the risk of not meeting the regulations. Figure 1 Therefore, there is an urgent need for a compressor pipeline to solve the above technical problems.

[0003] SUMMARY TECHNICAL PROBLEM

[0004] The utility model discloses a compressor pipeline, engine and vehicle can reduce the pressure after the opening of the surge valve, ensure that the gas in the oil gas separator normally enters into the compressor pipe.

[0005] To achieve this purpose, the utility model adopts the following technical scheme:

[0006] First, a kind of compressor pipeline is provided, comprising:

[0007] Pipe main body, the pipe main body has air inlet passage, and the outer peripheral wall of pipe main body is provided with first air inlet;

[0008] Connecting structure is communicated with the first air inlet and the air outlet of surge valve respectively, the outer side wall of connecting structure is provided with second air inlet, and the second air inlet is communicated with oil gas separator air outlet pipe, and connecting structure has negative pressure area, and the second air inlet is at least partially communicated with the negative pressure area.

[0009] As a preferred technical scheme of the above-mentioned compressor pipeline, the connecting structure is a venturi, and the negative pressure area is the throat of the venturi.

[0010] As a preferred technical scheme of the above-mentioned compressor pipeline, the connecting structure includes a pipe body and a convergent pipe, the convergent pipe is located in the pipe body, the gas flow direction from the surge valve to the pipe main body, and the inner diameter of the convergent pipe has a gradually decreasing trend.

[0011] As a preferred technical scheme of the compressor pipeline, the convergent pipe is a conical pipe.

[0012] As a preferred technical scheme of the compressor pipeline, the convergent pipe is welded to the inner peripheral wall of the pipe body.

[0013] As a preferred technical scheme of the compressor pipeline, the second air inlet is provided with an air inlet pipe which is integrally formed with the pipe body.

[0014] As a preferred technical scheme of the compressor pipeline, the connecting structure is an integrally formed structure.

[0015] As a preferred technical scheme of the compressor pipeline, the compressor pipeline further comprises a reinforcing rib structure arranged on the pipe body.

[0016] In a second aspect, an engine is provided, comprising a main body, a surge valve, an oil-gas separator, a compressor and the compressor pipeline according to any one of the preceding schemes, the compressor being connected to the main body, an air inlet of the compressor being communicated with an outlet of the compressor pipeline, and the compressor pipeline being further communicated with the surge valve and the oil-gas separator respectively.

[0017] In a third aspect, a vehicle is provided, comprising the engine according to any one of the preceding schemes.

[0018] The utility model has at least the following beneficial effects:

[0019] The compressor pipeline provided by the utility model comprises a pipe body and a connecting structure, the pipe body specifically comprises an air inlet channel, a first air inlet is arranged on the outer side wall of the pipe body, the connecting structure is communicated with the first air inlet and an air outlet of a surge valve respectively, a second air inlet is arranged on the outer side wall of the connecting structure, the second air inlet is communicated with an air outlet pipe of an oil-gas separator, the connecting structure has a negative pressure area, and the second air inlet is at least partially communicated with the negative pressure area. The compressor pipeline comprises the pipe body and the connecting structure, the connecting structure has the negative pressure area, and the second air inlet is at least partially communicated with the negative pressure area, so that when the negative pressure area generates negative pressure, the gas in the second air inlet is sucked into the negative pressure area of the connecting structure and flows in, the gas flowing out of the oil-gas separator can enter the pipe body, the air flow of the oil-gas separator outlet is prevented from being blocked, and the pressure of the crankcase is ensured to be negative pressure. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the description of the embodiments of the present application. Obviously, the drawings described in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to the contents of the embodiments of the present application and these drawings without any creative effort.

[0021] Figure 1 The schematic diagram provided in the background art for connecting the compressor pipeline with the surge valve and the oil-gas separator respectively;

[0022] Figure 2 The structural schematic diagram of the compressor pipeline provided in the embodiments of the present application;

[0023] Figure 3 The sectional view of the compressor pipeline provided in the embodiments of the present application.

[0024] In the drawings:

[0025] 1, pipe body; 11, reinforcing rib structure; 2, connecting structure; 21, pipe body; 211, first air inlet; 212, second air inlet; 22, contraction pipe; 3, air inlet pipe; 4, surge valve air inlet pipe; 5, oil-gas separator air outlet pipe; 6, surge valve; 7, oil-gas separator. DETAILED DESCRIPTION

[0026] The present application will be further described in detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application. In addition, it should be noted that, in order to facilitate the description, only the parts related to the present application are shown in the drawings, but not all the structures.

[0027] In the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] In the utility model, unless another definite provision and limitation, first feature is in second feature "on" or "under" can include that first and second features are in direct contact, also can include that first and second features are not in direct contact but contact through other feature between them.Moreover, first feature is in second feature "on", "above" and "upper surface" includes that first feature is in second feature directly above and obliquely above, or just indicates that first feature horizontal height is higher than second feature.First feature is in second feature "under", "below" and "under surface" includes that first feature is in second feature directly below and obliquely below, or just indicates that first feature horizontal height is less than second feature.

[0029] In the description of the embodiment, the terms "upper", "lower", "right", "left", "horizontal", "vertical", and "radial" refer to the orientation or position relationship shown in the drawings, which is only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0030] The compressor pipeline provided by the utility model adopts a connecting structure, the connecting structure has a negative pressure area, and gas in the oil-gas separator 7 can be sucked into the pipe body, avoiding the outflow of the oil-gas separator 7 being blocked.

[0031] Figure 2 The utility model provides a structure schematic diagram of compressor pipeline, Figure 3 The utility model provides a sectional view of compressor pipeline.

[0032] As shown in Figure 2 and Figure 3 , the compressor pipeline comprises a pipe body 1 and a connecting structure 2, the pipe body 1 has an air inlet channel, the outer peripheral wall of the pipe body 1 is provided with a first air inlet 211, the connecting structure 2 is communicated with the first air inlet 211 and the air outlet of the surge valve 6 respectively, the outer side wall of the connecting structure 2 is provided with a second air inlet 212, the second air inlet 212 is communicated with the oil-gas separator air outlet pipe 5, the connecting structure 2 has a negative pressure area, and the second air inlet 212 is at least partially communicated with the negative pressure area.

[0033] The compressor pipeline comprises a pipe body 1 and a connecting structure 2, and since the connecting structure 2 has a negative pressure area and the second air inlet 212 is at least partially communicated with the negative pressure area, when the negative pressure area generates negative pressure, the gas in the second air inlet 212 can be sucked into the negative pressure area of the connecting structure 2 and flow in, so that the gas flowing out of the oil-gas separator 7 can enter the pipe body 1 through the oil-gas separator air outlet pipe 5, avoiding the outflow of the oil-gas separator 7 being blocked, and ensuring that the pressure of the crankcase is negative pressure.

[0034] Specifically, the connecting structure 2 is a Venturi tube, and the negative pressure area is the throat of the Venturi tube, so that the gas in the surge valve 6 can enter the connecting structure 2 and then enter the pipe body 1. The second gas inlet 212 connected with the oil-gas separator 7 and the first gas inlet 211 connected with the surge valve 6 are integrated on the same connecting structure 2, which is a Venturi structure, and the second gas inlet 212 is located in the negative pressure area (i.e., the throat section) of the connecting structure 2. As shown in Figure 3 When the gas flowing out of the surge valve 6 flows into the cavity formed by the pipe body 1 in the direction of the arrow, a lower negative pressure effect is generated in the middle section due to the Venturi structure, thereby reducing the pressure in the oil-gas separator outlet pipe 5. In this way, the flow energy of the gas in the surge valve 6 is utilized to reduce the influence on the crankcase pressure, and a positive promoting effect is also achieved.

[0035] In other embodiments, as shown in Figure 3 The connecting structure includes a pipe body 21 and a contraction pipe 22, which is located in the pipe body 21. From the gas flow direction of the surge valve 6 to the pipe body 1, the inner diameter of the contraction pipe 22 has a gradually decreasing trend. The contraction pipe 22 can reduce the pressure of the gas flowing out of the contraction pipe 22 to form a negative pressure area, thereby guiding the gas flowing out of the gas outlet of the oil-gas separator 7 and avoiding the positive pressure in the crankcase.

[0036] In some embodiments, the pipe body 21 and the contraction pipe 22 are integrally formed, i.e., the connecting structure is integrally injection molded, which can improve the assembly efficiency and improve the air tightness of the connecting structure.

[0037] In some embodiments, the contraction pipe 22 is a tapered pipe. That is, the diameter of the tapered pipe gradually decreases along the direction of the gas flowing out of the surge valve 6, which can ensure that a negative pressure area is formed in the pipe body 21, thereby guiding the gas flowing out of the gas outlet of the oil-gas separator 7 and avoiding the positive pressure in the crankcase.

[0038] For example, the contraction pipe 22 is welded to the inner circumferential wall of the pipe body 21. Of course, in other embodiments, the contraction pipe 22 can be fixed to the inner circumferential wall of the pipe body 21 by fasteners. In other embodiments, the contraction pipe 22 can be bonded to the inner circumferential wall of the pipe body 21. The above-mentioned arrangement can fix the position of the contraction pipe 22.

[0039] In some embodiments, the second gas inlet 212 is provided with an inlet pipe 3, which is integrally formed with the pipe body 1. This arrangement can reduce the assembly time, improve the assembly efficiency, and avoid leakage at the connection between the inlet pipe 3 and the pipe body 1, thereby improving the reliability of the compressor pipeline. For example, the inlet pipe 3 and the pipe body 1 are integrally formed by an injection molding process, thereby ensuring the air tightness of the compressor pipeline.

[0040] In some embodiments, the compressor pipeline is integrally formed by an injection molding process, so that the compressor pipeline has good air tightness.

[0041] In some embodiments, the compressor pipeline further comprises a reinforcing rib structure 11 arranged on the pipe body 1.

[0042] In some embodiments, the pipe body 1 has a U-shaped structure, so that the compactness of the compressor pipeline is improved.

[0043] In some embodiments, in order to improve the uniformity of gas mixing in the compressor pipeline, the pipe body 1 is arranged on the side wall close to the large end gas inlet of the pipe body 1.

[0044] The compressor pipeline provided by the utility model adopts a connecting structure 2 with a negative pressure area, the connecting structure 2 simultaneously connects the gas outlet of the surge valve 6 and the gas outlet of the oil-gas separator 7, and the gas in the oil-gas separator 7 is guided into the pipe body 1 under the action of the negative pressure area, thereby solving the problem that the positive value of the crankcase pressure of the gas engine does not conform to the regulations.

[0045] In the embodiment of the utility model, an engine is provided, which comprises a main body, a surge valve 6, an oil-gas separator 7, a compressor and the compressor pipeline provided by the embodiment of the utility model, the compressor is connected with the main body, the gas inlet of the compressor is in communication with the outlet of the compressor pipeline, and the compressor pipeline is also in communication with the surge valve 6 and the oil-gas separator 7 respectively.

[0046] The engine provided by the utility model comprises a pipe body 1 and a connecting structure 2, the connecting structure 2 has a negative pressure forming area, and the second gas inlet 212 is at least partially in communication with the negative pressure area, so that when the negative pressure area generates negative pressure, the gas in the second gas inlet 212 is sucked into the negative pressure area of the connecting structure 2 and flows in, and the gas flowing out of the oil-gas separator 7 can flow into the pipe body 1, so that the gas flow of the oil-gas separator 7 is not blocked, and the pressure of the crankcase is ensured to be negative pressure.

[0047] The engine provided by the utility model has the compressor pipeline provided by the utility model, and has the advantages of compact structure and convenient arrangement, the engine balances the pressure before and after the compressor by arranging the anti-surge valve 6 and the associated pipeline, so that surge is avoided, and the gas flow direction from the anti-surge valve 6 and the gas flow direction from the oil-gas separator 7 can simultaneously flow into the pipe body 1, so that the gas flow of the oil-gas separator 7 is not blocked, and the positive value of the crankcase pressure is avoided.

[0048] Since the compressor pipeline is provided, the engine provided by the embodiment of the utility model has all the advantages and beneficial effects of the above-mentioned embodiments, which will not be repeated here.

[0049] The utility model embodiment provides a kind of vehicle, including the engine provided by above embodiment.

[0050] The vehicle includes the compressor pipeline as described above, the compressor pipeline includes pipe body 1 and connecting structure 2, the connecting structure 2 has a negative pressure forming area, and the second air inlet 212 is at least partially communicated with the negative pressure area, so that when the negative pressure area generates negative pressure, the gas in the second air inlet 212 is sucked into the negative pressure area of the connecting structure 2 and flows in, allowing the gas flowing out of the oil-gas separator 7 to enter the pipe body 1, avoiding the gas flow from the oil-gas separator 7 being blocked, and ensuring that the pressure of the crankcase is negative.

[0051] Due to the engine as described above, the vehicle of the utility model embodiment has all the advantages and beneficial effects of the above embodiments, which will not be repeated here.

[0052] In addition, the above are only preferred embodiments of the utility model and the technical principles applied. Those skilled in the art will understand that the utility model is not limited to the specific embodiments described herein, and those skilled in the art can make various obvious changes, readjustments and substitutions without departing from the protection scope of the utility model. Therefore, although the utility model has been described in more detail through the above embodiments, the utility model is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the utility model, and the scope of the utility model is determined by the scope of the attached claims.

Claims

1. A compressor line, characterized by, The application relates to a compressor pipeline. The pipeline body (1) has an air inlet channel, and a first air inlet (211) is arranged on the outer wall of the pipeline body (1); a connecting structure (2) is arranged in communication with the first air inlet (211) and an air outlet of a surge valve (6) respectively, an outer wall of the connecting structure (2) is provided with a second air inlet (212) in communication with an oil-gas separator air outlet pipe (5), the connecting structure (2) has a negative pressure area, and the second air inlet (212) is at least partially in communication with the negative pressure area. The connecting structure (2) is a Venturi tube, and the negative pressure area is a throat of the Venturi tube.

2. The compressor line of claim 1, wherein, The connecting structure (2) comprises a pipe body (21) and a contraction pipe (22), the contraction pipe (22) is arranged in the pipe body (21), and the gas flow direction of the contraction pipe (22) is from the surge valve (6) to the pipeline body (1); and the inner diameter of the contraction pipe (22) has a gradually decreasing trend.

3. The compressor line of claim 1, wherein, The contraction pipe (22) is a conical pipe.

4. The compressor line of claim 3, wherein, The contraction pipe (22) is welded to the inner wall of the pipe body (21).

5. The compressor line of claim 3, wherein, The second air inlet (212) is provided with an air inlet pipe (3), and the air inlet pipe (3) and the pipe body (21) are an integral forming structure.

6. The compressor line of claim 3, wherein, The connecting structure (2) is an integral forming structure.

7. The compressor line of claim 3, wherein, The compressor pipeline further comprises a reinforcing rib structure (11) arranged on the pipeline body (1).

8. The compressor line of any of claims 1-7, wherein, The application relates to an engine comprising a main body, a surge valve (6), an oil-gas separator (7), a compressor and the compressor pipeline according to any one of claims 1-8, the compressor is connected with the main body, an air inlet of the compressor is in communication with an outlet of the compressor pipeline, and the compressor pipeline is in communication with the surge valve (6) and the oil-gas separator (7) respectively.

9. An engine characterized by, The application relates to an engine comprising the engine according to claim 9.

10. A vehicle characterized by comprising: ​

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