Closed nozzle ring

Abstract

A plurality of drainage plates are evenly arranged on the upper surface of a main ring body, a flow channel is formed between every two adjacent drainage plates, the drainage plates are arranged in the tangential direction of the inner side surface of the main ring body, screw holes are formed in the upper surfaces of the drainage plates, a plurality of clamping grooves are formed in one side of an annular pressing cover, and the annular pressing cover is arranged in the clamping grooves. The outer end of the drainage plate is provided with a plurality of clamping grooves, the clamping grooves of the annular gland correspond to the drainage plates in a one-to-one mode and are connected with the drainage plates in an inserted mode, counter bores are formed in the positions, located at the clamping grooves, of the annular gland in a penetrating mode, and the counter bores correspond to the screw holes of the drainage plates and are connected with the corresponding drainage plates in a fastened mode through bolts. On one hand, the annular gland is of a detachable structure, when an open type nozzle ring is adopted by a turbocharger, only the main ring body and the drainage plate are used, the annular gland does not need to be installed, flexibility is greatly improved, the application range is greatly widened, on the other hand, the annular gland and the drainage plate are connected in an inserted mode, and the overall structural strength is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to nozzle ring technical field, concretely is a closed nozzle ring. BACKGROUND

[0002] As an important component of turbocharger, nozzle ring plays a key role in regulating the flow direction and flow rate of exhaust gas. In the turbocharging system, the design and performance of nozzle ring directly affect the working efficiency of turbine and the supercharging effect of engine.

[0003] Nozzle ring is generally of open structure, one end of the flow guide plate can be matched with the corresponding part of the turbine shell and form a closed flow channel, while the closed nozzle ring is provided with a ring body at both ends of the flow guide plate, and the closed flow channel is directly formed by the two ring bodies and the adjacent flow guide plate. The turbine shell plays a role of fixed installation. At present, the two ring bodies and the flow guide plate of the closed nozzle ring are mostly of integral structure, which can only be applied to a specific type of turbocharger, and the application range is not high. Therefore, an improved technology is urgently needed to solve the problem existing in the prior art. SUMMARY

[0004] The utility model aims at providing a closed nozzle ring to solve the problems raised in the background art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a closed nozzle ring, comprising a main ring body, a ring-shaped gland and a flow guide plate, the upper surface of the main ring body is uniformly provided with a plurality of flow guide plates, a flow channel is formed between two adjacent flow guide plates, the flow guide plates are arranged along the tangent direction of the inner surface of the main ring body, screw holes are formed in the upper surface of the flow guide plates, a plurality of clamping grooves are formed in one side of the ring-shaped gland, the clamping grooves of the ring-shaped gland correspond to the flow guide plates and are inserted into each other, a counterbore is formed in the clamping groove of the ring-shaped gland, and the counterbore corresponds to the screw hole of the flow guide plate and is fastened and connected to the corresponding flow guide plate by a bolt.

[0006] Preferably, the utility model provides a closed nozzle ring, wherein the flow guide plate and the main ring body are of an integral structure, and a reinforcing protrusion is arranged at the connection between the flow guide plate and the main ring body.

[0007] Preferably, the utility model provides a closed nozzle ring, wherein a plurality of positioning holes are uniformly arranged on the side of the main ring body away from the flow guide plate.

[0008] Preferably, the utility model provides a closed nozzle ring, wherein the width of the flow guide plate gradually increases from the inner side to the outer side, and the cross section of the clamping groove and the flow guide plate matches each other.

[0009] Preferably, the utility model provides a closed nozzle ring, wherein the inside diameter of the main ring body is consistent with the inside diameter of the annular gland, the outside diameter of the main ring body is consistent with the outside diameter of the annular gland.

[0010] Compared with the prior art, the utility model has the beneficial effects that:

[0011] The cooperation of the main ring body and the annular gland forms a closed flow channel, the outer end of the flow guide plate is inserted into the clamping groove of the annular gland and is fastened and connected through bolts, on the one hand, the annular gland is a detachable structure, when the turbocharger adopts an open nozzle ring, only the main ring body and the flow guide plate can be used, and the annular gland does not need to be installed, the flexibility and the application range are greatly improved, on the other hand, the annular gland and the flow guide plate are connected in a plug-in mode, and the overall structural strength is guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a structural schematic view of the utility model;

[0013] Figure 2 It is an angle conversion structure schematic view; Figure 1

[0014] Figure 3 It is a structural schematic view of the main ring body and the flow guide plate;

[0015] Figure 4 It is an annular gland structure schematic view.

[0016] In the drawing: main ring body 1, annular gland 2, flow guide plate 3, screw hole 4, clamping groove 5, counterbore 6, reinforcing protrusion 7, positioning hole 8. DETAILED DESCRIPTION

[0017] The technical scheme of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model;

[0018] It should be noted that in the description of the utility model, it should be noted that the terms "inner", "outer", "upper", "lower", "two sides", "one end", "the other end", "left", "right" and the like indicate the orientation or positional relationship shown in the drawing, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element 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.

[0019] Please refer to Figures 1-4 ​The utility model provides a technical scheme: a closed nozzle ring, including main ring body 1, ring cover 2 and drainage plate 3, the upper surface of main ring body 1 is evenly provided with a plurality of drainage plate 3, drainage plate 3 and main ring body 1 are integrated structure, drainage plate 3 and main ring body 1 junction are provided with reinforcing convex 7, to guarantee the structural strength between drainage plate 3 and main ring body 1, main ring body 1 is away from drainage plate 3 one side evenly provided with a plurality of positioning hole 8, to and turbocharger installation position are positioned, prevent after installing nozzle ring rotation, the width of drainage plate 3 gradually increases from inside to outside, the cross section of clamping groove 5 and drainage plate 3 is mutually matched, to guarantee the connecting stability between drainage plate 3 and ring cover 2, two adjacent drainage plate 3 between all form flow channel, drainage plate 3 all along the tangent direction of main ring body 1 inside surface surface arrangement, the upper surface of drainage plate 3 all are provided with screw hole 4, ring cover 2 one side is provided with a plurality of clamping groove 5, the clamping groove 5 of ring cover 2 and drainage plate 3 one to one correspondence and mutually insert, ring cover 2 is located at the through hole 6 of clamping groove 5, and the screw hole 4 of drainage plate 3 is corresponded and is fastened with the corresponding drainage plate 3 by bolt, the inner diameter of main ring body 1 is consistent with the inner diameter of ring cover 2, the outer diameter of main ring body 1 is consistent with the outer diameter of ring cover 2, to guarantee can smoothly install to the corresponding position inside turbocharger.

[0020] Assembly method and principle: first, the main ring body 1 and the drainage plate 3 integrated structure are prepared, and then the ring cover 2 with the clamping groove 5 is prepared, then the counterbore 6 is opened at each clamping groove 5 of the ring cover 2, and the screw hole 4 is opened at the outer end of the drainage plate 3. Then, the clamping groove 5 of the ring cover 2 corresponds to each drainage plate 3 of the main ring body 1, and the drainage plate 3 is inserted into the clamping groove 5 of the ring cover 2. Finally, the bolt is threaded through the counterbore 6 and connected with the screw hole 4 of the drainage plate 3, and the assembly is completed. In use, the whole is installed at the impeller of the turbocharger, the exhaust gas passes through the flow channel and acts on the impeller of the turbocharger, thereby driving the turbine to rotate. The utility model has the advantages of reasonable structure, cooperation of the main ring body 1 and the ring cover 2, formation of a closed flow channel, insertion of the outer end of the drainage plate 3 into the clamping groove 5 of the ring cover 2 and fastening connection by the bolt. On the one hand, the ring cover 2 is a detachable structure, when the turbocharger uses an open nozzle ring, only the main ring body 1 and the drainage plate 3 can be used, and the ring cover 2 is not needed to be installed, which greatly improves the flexibility and application range (when the ring cover 2 is not used, the screw hole 4 does not need to be opened at the outer end of the drainage plate 3). On the other hand, the ring cover 2 and the drainage plate 3 are connected in the insertion mode, which ensures the overall structural strength.

[0021] The parts not described in the utility model are known to those skilled in the art.

[0022] Finally, it should be noted that the above detailed description is merely intended to illustrate the technical solutions of the present application, rather than limit the present application. Although the present application has been described in detail with reference to the examples, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, and all of them should be included in the scope of the claims of the present application.

Claims

1. A closed nozzle ring, characterized by: The utility model relates to a drainage plate, including main ring body (1), ring grommet (2) and drainage plate (3), the upper surface of main ring body (1) is evenly provided with a plurality of drainage plate (3), and the flow channel is formed between two adjacent drainage plate (3), drainage plate (3) all are along the tangent direction of main ring body (1) inside surface arrangement, the upper surface of drainage plate (3) all are provided with screw hole (4), ring grommet (2) one side is provided with a plurality of clamping slot (5), and the clamping slot (5) of ring grommet (2) corresponds with drainage plate (3) one to one and mutually inserts, and the clamping slot (5) of ring grommet (2) is provided with counterbore (6) at the place of inserting, and the counterbore (6) corresponds with the screw hole (4) of drainage plate (3) and is fastened with the corresponding drainage plate (3) through bolt connection.

2. A closed nozzle ring according to claim 1, characterized in that: The drainage plate (3) and the main ring body (1) are integrated, and the drainage plate (3) is provided with a reinforcing protrusion (7) at the connection with the main ring body (1).

3. A closed nozzle ring according to claim 1, characterized in that: The main ring body (1) is provided with a plurality of positioning holes (8) on the side away from the drainage plate (3).

4. A closed nozzle ring according to claim 1, characterized in that: The width of the drainage plate (3) gradually increases from the inside to the outside, and the cross section of the clamping slot (5) and the drainage plate (3) matches each other.

5. A closed nozzle ring according to claim 1, characterized in that: The inner diameter of the main ring body (1) is consistent with the inner diameter of the ring grommet (2), and the outer diameter of the main ring body (1) is consistent with the outer diameter of the ring grommet (2).

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