Waste gas bypass valve assembly and waste gas bypass pipeline

Abstract

The waste gas bypass valve assembly comprises a waste gas bypass valve and a fixing support, the waste gas bypass valve comprises a valve part and an actuator part, one end of the fixing support is detachably fixed to the end of the actuator part, and the other end of the fixing support is detachably fixed to the end of the actuator part. And at least one second fixing hole matched with the first fixing holes in the flange plates at the two ends of the valve part is formed in the other end of the expansion joint. By adopting the waste gas bypass valve assembly, the service lives of the expansion joint and the bolt are prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of low-speed diesel engines, and particularly relates to an exhaust gas bypass valve assembly and an exhaust gas bypass pipeline. Background Art

[0002] The statements herein only provide the background art related to the utility model, and do not necessarily constitute the prior art.

[0003] The exhaust gas bypass valve is an important component that needs to be installed during the low-load commissioning of a low-speed diesel engine, and is used to adjust the scavenging pressure by adjusting the opening degree of the exhaust gas bypass valve during the operation of the main engine.

[0004] According to the original design of the drawing, in the exhaust gas bypass pipeline, a first pipeline 2 is welded on the exhaust pipe 1. One end of the exhaust gas bypass 3 is installed on the first pipeline 2 through flange connection, and the other end is connected to an expansion joint 4 through flange connection. The expansion joint is connected to one end of a second pipeline 5, and the other end of the second pipeline 5 is used to be connected to the exhaust gas main pipe. Since the installation position of the exhaust gas bypass valve 3 is high, the pipeline connecting to the exhaust gas main pipe is long and it is inconvenient to install a fixing bracket. Due to the high exhaust gas temperature, the actuator of the exhaust gas bypass valve 3 needs to be as far away from the valve as possible. In this way, the suspended exhaust gas bypass valve vibrates greatly under the drive of the actuator, thereby reducing the service life of the expansion joint 4 and bolts behind the exhaust gas bypass valve 3. Summary of the Utility Model

[0005] The purpose of the utility model is to overcome the above-mentioned deficiencies of the prior art, and provide an exhaust gas bypass valve assembly and an exhaust gas bypass pipeline, which reduce the vibration generated by the exhaust gas bypass valve during the operation of the main engine and improve the service life of the expansion joint and bolts behind the exhaust gas bypass valve.

[0006] To achieve the above purpose, the utility model adopts the following technical solutions:

[0007] In a first aspect, an embodiment of the utility model provides an exhaust gas bypass valve assembly, which includes an exhaust gas bypass valve and a fixing bracket. The exhaust gas bypass valve includes a valve part and an actuator part. One end of the fixing bracket is detachably fixed to the end of the actuator part, and the other end is provided with at least one second fixing hole that matches the first fixing holes on the flange plates at both ends of the valve part.

[0008] Optionally, the bracket includes a first plate portion and a second plate portion arranged at a set obtuse angle. One end of the first plate portion is fixedly connected to the end of the actuator part. The second plate portion is fixed with a third plate portion. One end of the third plate portion is fixed to the first plate portion, and the other end is provided with at least one second fixing hole.

[0009] Optionally, the third plate portion is perpendicular to both the first plate portion and the second plate portion.

[0010] Optionally, the second fixing hole is an oblong hole.

[0011] Optionally, the first plate portion is provided with a plurality of third fixing holes, and the first plate portion is detachably fixed to the end of the actuator portion through the third fixing holes and threaded fasteners.

[0012] Optionally, the first plate portion for connecting the end of the actuator portion is provided with a through hole, and a plurality of third fixing holes matching the fourth fixing holes of the actuator portion are provided on the outer periphery of the through hole.

[0013] In a second aspect, an embodiment of the present invention provides an exhaust gas bypass pipeline, which includes the exhaust gas bypass valve assembly described in the first aspect, and further includes a first pipeline. One end of the first pipeline is used to connect to the exhaust pipe, and the other end is connected to one end of the valve portion of the exhaust gas bypass valve assembly through a flange. The other end of the valve portion of the exhaust gas bypass valve assembly is connected to one end of an expansion joint through a flange. The other end of the expansion joint is connected to a second pipeline. Wherein, one end of the fixing bracket is connected to the end of the actuator portion, and the other end is attached to the flange of the first pipeline, and the fixing bracket, the valve portion and one end of the first pipeline are fixedly connected through threaded fasteners and the second fixing hole. The other end of the second pipeline is used to connect to the exhaust gas main pipe

[0014] Optionally, the threaded fastener is a bolt, and the bolt sequentially passes through the flange of the valve portion, the flange of the first pipeline and the fixing bracket and then is threadedly connected to a fixing nut.

[0015] In a third aspect, an embodiment of the present invention provides an exhaust gas bypass pipeline, which includes the exhaust gas bypass valve assembly described in the first aspect, and further includes a first pipeline. One end of the first pipeline is used to connect to the exhaust pipe, and the other end is connected to one end of the valve portion of the exhaust gas bypass valve assembly through a flange. The other end of the valve portion of the exhaust gas bypass valve assembly is connected to one end of an expansion joint through a flange. The other end of the expansion joint is connected to a second pipeline, and the other end of the second pipeline is used to connect to the exhaust gas main pipe.

[0016] Wherein, one end of the fixing bracket is connected to the end of the actuator portion, and the other end is attached to the flange of the expansion joint, and the fixing bracket, the valve portion and the expansion joint are fixedly connected through threaded fasteners and the second fixing hole.

[0017] Optionally, the threaded fastener is a bolt, and the bolt sequentially passes through the flange of the valve portion, the flange of the expansion joint and the fixing bracket and then is threadedly connected to a fixing nut.

[0018] The beneficial effects of the present invention are as follows:

[0019] The exhaust gas bypass valve assembly and exhaust gas bypass pipeline of the present utility model, by providing a fixing bracket, one end of the fixing bracket is fixedly connected to the actuator part, and the other end is provided with a second fixing hole, which can be fixed to the flange of the first pipeline or the flange of the expansion joint in the exhaust gas bypass pipeline through the second fixing hole. The fixing bracket effectively reduces the vibration of the exhaust gas bypass valve assembly during the operation of the main engine and improves the service life of the expansion joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The specification drawings forming a part of this application are used to provide a further understanding of this application. The schematic embodiments of this application and their descriptions are used to explain this application and do not constitute a limitation to this application.

[0021] Figure 1 is a schematic diagram of the current exhaust gas bypass pipeline;

[0022] Figure 2 is a schematic structural diagram of Embodiment 1 of the present utility model;

[0023] Figure 3 is a schematic structural diagram of the fixing bracket in Embodiment 1 of the present utility model;

[0024] Among them, 1. Smoke exhaust pipe, 2. First pipeline, 3. Exhaust gas bypass valve, 4. Expansion joint, 5. Second pipeline, 6. Fixing bracket;

[0025] 3-1. Valve part, 3-2. Actuator part;

[0026] 6-1. First plate part, 6-2. Second plate part, 6-3. Third plate part, 6-4. Through hole, 6-5. Third fixing hole, 6-6. Second fixing hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] Embodiment 1

[0028] This embodiment provides an exhaust gas bypass valve assembly, including an exhaust gas bypass valve 3 and a fixing bracket 6. The exhaust gas bypass valve 3 can adopt the existing structure, including a valve component 3-1 and an actuator part 3-2. The valve part 3-1 and the actuator part 3-2 can adopt the existing technology, and their specific structures will not be described in detail here.

[0029] The actuator part 3-2 is detachably and fixedly connected to one end of the fixing bracket 6, and at least one second fixing hole matching the first fixing holes on the flanges at both ends of the valve part 3-1 is provided at the other end of the fixing bracket 6.

[0030] In this embodiment, the fixing bracket 6 includes a first plate part 6-1 and a second plate part 6-2 arranged at an obtuse angle. The degree of the obtuse angle can be set according to actual needs and will not be described in detail here.

[0031] A third plate portion 6-3 is provided between the first plate portion 6-1 and the second plate portion 6-2. The long side of the third plate portion 6-3 is perpendicularly welded and fixed to the second plate portion 6-2, and one end of the third plate portion 6-3 is perpendicularly welded and fixed to the first plate portion 6-1.

[0032] A through hole 6-4 is provided at the end of the first plate portion 6-1 for connecting the actuator portion. Four third fixing holes 6-5 are arranged at equal intervals along the circumferential direction around the periphery of the through hole 6-4. The third fixing holes 6-5 are matched with the fixing holes at the end of the actuator portion 3-2. The first plate portion 6-1 is detachably and fixedly connected to the end of the actuator portion 3-2 through the third fixing holes 6-5 and bolts.

[0033] One end of the third plate portion 6-3 is perpendicularly welded and fixed to the first plate portion 6-1, and at least one second fixing hole 6-6 is provided at the other end of the third plate portion 6-3.

[0034] Preferably, two second fixing holes 6-6 are provided at the other end of the third plate portion 6-3.

[0035] Furthermore, in order to facilitate the adjustment of the position of the bolt, the second fixing hole 6-6 is a waist-shaped hole.

[0036] Embodiment 2

[0037] This embodiment provides an exhaust gas bypass pipeline, which includes the exhaust gas bypass valve assembly described in Embodiment 1, and also includes a first pipeline 2, an expansion joint 4, and a second pipeline 5.

[0038] One end of the first pipeline 2 is used for welding and fixing on the exhaust pipe 1. The other end of the first pipeline 2 is provided with a flange and is matched with the flange at one end of the valve portion 3-1 of the exhaust gas bypass valve 3. The first plate portion 6-1 of the fixed bracket 6 is detachably and fixedly connected to the end of the actuator portion 3-2 through bolts. The end of the third plate portion 6-3 is attached to the end face of the flange of the first pipeline 2 close to the exhaust pipe 1, and the second fixing holes 6-6 correspond to the fixing holes on the flange of the valve portion 3-1 of the exhaust gas bypass valve 3 and the flange of the first pipeline 2. Threaded fasteners are used to fix the third plate portion 6-3 and the flange of the first pipeline 2. The threaded fasteners are bolts and nuts. The bolt passes through the second fixing hole 6-6 of the third plate portion 6-3, the flange at the end of the valve portion 3-1 of the exhaust gas bypass valve 3, and the flange of the first pipeline 2, and then the nut is tightened, realizing the detachable fixation of the fixed bracket 6 with the first pipeline 2 and the valve portion 3-1 of the exhaust gas bypass valve 3.

[0039] The flange at the other end of the valve part 3-1 of the exhaust gas bypass valve 3 is detachably and fixedly connected to one end of the expansion joint 4 through the flange, bolts and nuts at one end of the expansion joint 4. The other end of the expansion joint 4 is detachably and fixedly connected to one end of the second pipe 5 through the flange, bolts and nuts. The other end of the second pipe 5 is used to connect to the exhaust gas main pipe.

[0040] In this embodiment, the actuator part 3-2 of the exhaust gas bypass valve 3 is fixed to the first pipe 2 and the valve part 3-1 through the fixing bracket 6. The vibration of the exhaust gas bypass valve assembly during the operation of the main engine is effectively reduced through the fixing bracket 6, and the service life of the expansion joint is improved.

[0041] Embodiment 3

[0042] This embodiment provides an exhaust gas bypass pipeline, which includes the exhaust gas bypass valve assembly described in Embodiment 1, and also includes the first pipe 2, the expansion joint 4 and the second pipe 5.

[0043] One end of the first pipe 2 is used for welding and fixing on the exhaust pipe 1. The other end of the first pipe 2 is provided with a flange and is matched with the flange at one end of the valve part 3-1 of the exhaust gas bypass valve 3. The first pipe 2 is detachably and fixedly connected to one end of the valve part 3-1 of the exhaust gas bypass valve 3 through the flange, bolts and nuts.

[0044] The flange at the other end of the valve part 3-1 is matched with the flange at one end of the expansion joint 4. The first plate part 6-1 of the fixing bracket 6 is detachably fixed to the actuator part 3-2 through bolts. The end of the third plate part 6-3 is attached to the end face of the flange of the expansion joint 4 connecting the valve part 3-1 away from the exhaust pipe 1, and the second fixing hole 6-6 is aligned with the fixing holes of the expansion joint 4 and the valve part 3-1. The third plate part 6-3 and the flange of the expansion joint 4 are fixed by using threaded fasteners. The threaded fasteners adopt bolts and nuts. The bolts pass through the fixing holes of the flange of the valve part 3-1, the flange of the expansion joint 4 and the second fixing hole 6-6 of the third plate part 6-3, and then the nuts are tightened, realizing the detachable fixation of the fixing bracket 6 with the expansion joint 4 and the valve part 3-1.

[0045] The other end of the expansion joint 4 is detachably and fixedly connected to one end of the second pipe 5 through the flange, bolts and nuts. The other end of the second pipe 5 is used to connect to the exhaust gas main pipe.

[0046] In this embodiment, the actuator part of the exhaust gas bypass valve is fixed to the expansion joint and the valve part through the fixing bracket. The vibration of the exhaust gas bypass valve assembly during the operation of the main engine is effectively reduced through the fixing bracket, and the service life of the expansion joint is improved.

[0047] Although the specific implementation manners of the present utility model have been described above in conjunction with the accompanying drawings, it is not a limitation on the protection scope of the present utility model. Those skilled in the art should understand that various modifications or deformations that can be made without creative efforts on the basis of the technical solution of the present utility model are still within the protection scope of the present utility model.

Claims

1. An exhaust gas bypass valve assembly, characterized in that, It includes an exhaust gas bypass valve and a fixing bracket. The exhaust gas bypass valve includes a valve part and an actuator part. One end of the fixing bracket is detachably fixed to the end of the actuator part, and the other end is provided with at least one second fixing hole that matches the first fixing holes on the two end flanges of the valve part.

2. The exhaust gas bypass valve assembly according to claim 1, wherein The fixing bracket includes a first plate part and a second plate part arranged at a set obtuse angle. One end of the first plate part is fixedly connected to the end of the actuator part. The second plate part is fixed with a third plate part. One end of the third plate part is fixed to the first plate part, and the other end is provided with at least one second fixing hole.

3. The exhaust gas bypass valve assembly according to claim 2, characterized in that, The third plate part is perpendicular to both the first plate part and the second plate part.

4. The exhaust gas bypass valve assembly according to claim 2, wherein, The second fixing hole is a kidney-shaped hole.

5. The exhaust gas bypass valve assembly according to claim 2, characterized in that, The first plate part is provided with a plurality of third fixing holes, and the first plate part is detachably fixed to the end of the actuator part through the third fixing holes and threaded fasteners.

6. The exhaust gas bypass valve assembly according to claim 2, wherein, The end of the first plate part for connecting the actuator part is provided with a through hole, and a plurality of third fixing holes that match the fourth fixing holes of the actuator part are arranged on the outer periphery of the through hole.

7. An exhaust gas bypass pipeline, characterized in that, It includes the exhaust gas bypass valve assembly according to any one of claims 1-6, and further includes a first pipe. One end of the first pipe is used to connect to the exhaust pipe, and the other end is connected to one end of the valve part of the exhaust gas bypass valve assembly through a flange. The other end of the valve part of the exhaust gas bypass valve assembly is connected to one end of an expansion joint through a flange, and the other end of the expansion joint is connected to a second pipe. Wherein, one end of the fixing bracket is connected to the end of the actuator part, and the other end is attached to the flange of the first pipe, and the fixing bracket, the valve part and one end of the first pipe are fixedly connected through threaded fasteners and the second fixing holes. The other end of the second pipe is used to connect to the exhaust gas main pipe.

8. The exhaust gas bypass pipeline according to claim 7, characterized in that, The threaded fastener is a bolt, and the bolt sequentially passes through the flange of the valve part, the flange of the first pipe and the fixing bracket and then is threadedly connected to a fixing nut.

9. An exhaust gas bypass pipeline, characterized in that, It includes the exhaust gas bypass valve assembly according to any one of claims 1-6, and further includes a first pipe. One end of the first pipe is used to connect to the exhaust pipe, and the other end is connected to one end of the valve part of the exhaust gas bypass valve assembly through a flange. The other end of the valve part of the exhaust gas bypass valve assembly is connected to one end of an expansion joint through a flange, and the other end of the expansion joint is connected to a second pipe. The other end of the second pipe is used to connect to the exhaust gas main pipe; Wherein, one end of the fixing bracket is connected to the end of the actuator part, and the other end is attached to the flange of the expansion joint, and the fixing bracket, the valve part and the expansion joint are fixedly connected through threaded fasteners and the second fixing holes.

10. An exhaust gas bypass pipeline according to claim 9, characterized in that, The threaded fastener is a bolt, and the bolt sequentially passes through the flange of the valve part, the flange of the expansion joint and the fixing bracket and then is threadedly connected to a fixing nut.

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