Corner seal spring for rotor engine and rotor adopting corner seal spring

Abstract

The utility model belongs to the technical field of rotor engines, and particularly relates to a corner seal spring for a rotor engine and a rotor adopting the corner seal spring. One ends of the two elastic sheets are connected, and the other ends of the two elastic sheets extend upwards and downwards respectively and form included angles with the connected ends; and the upward and downward extending end parts of the two elastic sheets are respectively abutted against the corner seal slot and the corner seal of the rotor. Elastic force is provided through the upper end and the lower end of the corner seal spring, the corner seal is tightly attached to the inner wall of the end cover in the rotating process, the lateral sealing performance is improved, the technical problem of mixed gas leakage in the compression and combustion process is solved, the actual compression ratio of an engine is increased, oil consumption is reduced, and combustion and emission are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to rotor engine technical field, concretely relates to a kind of angle seal spring for rotor engine and rotor using the angle seal spring of this. BACKGROUND

[0002] Rotor engine is a kind of rotary internal combustion engine, rotor engine has the advantages such as small volume, high power density, smooth running, but it also faces some challenges, such as high sealing performance requirement, fuel economy is not as expected, emission control and other problems.Rotor engine sealing structure of existing engine respectively by edge seal sheet and edge seal spring, angle seal sheet and angle seal spring, radial seal sheet and radial seal spring are embedded in engine rotor.The angle seal is an important component in rotor engine, responsible for sealing the three piston pulse chambers of rotor.The angle seal spring is used to keep the elastic component of angle seal.The function of angle seal spring is to ensure that angle seal is closely attached to the inner wall during rotation, to prevent gas or lubricating oil from leaking to the place where it should not reach.The design and performance of angle seal spring directly affect the sealing performance and reliability of engine.

[0003] The existing angle seal spring structure usually adopts single-face compression design, and the structure has the problems of uneven force on angle seal spring during rotor movement, poor sealing, mixed gas leakage during compression and combustion, poor power and economy of rotor engine, and impact on emission requirements.

[0004] Therefore, an angle seal spring capable of solving the above problems is needed. UTILITY MODEL CONTENTS

[0005] The utility model provides an angle seal spring for rotor engine and rotor using the angle seal spring, the angle seal spring is changed from existing single-piece compression design to U-shaped structure to provide compression force on both ends, higher strength and more uniform stress, fully improve the high-temperature structural strength of rotor, the sealing effect of lateral sealing device is higher, thereby solve the technical problem of mixed gas leakage during compression and combustion, improve the actual compression ratio of engine, reduce fuel consumption, improve combustion and emission.

[0006] In one aspect, the utility model provides an angle seal spring for rotor engine, the rotor engine includes rotor, the rotor is provided with angle seal slot, the angle seal spring installed in angle seal slot and angle seal, the angle seal is installed on the top of angle seal spring;The angle seal spring includes two elastic sheets;One end of two elastic sheets is connected, and the other end respectively extends upward and downward, and forms an included angle with the connected end;The end of two elastic sheets extending upward and downward respectively abuts with the angle seal slot and angle seal of rotor.

[0007] Further, the two elastic sheets are a first elastic sheet and a second elastic sheet; and the first elastic sheet and the second elastic sheet are respectively provided with a first clamping slot and a second clamping slot at one end thereof.

[0008] Further, the first clamping slot and the second clamping slot are U-shaped openings; and the U-shaped openings of the first clamping slot and the second clamping slot are overlapped with each other along a radial direction of a rotor of the rotary engine.

[0009] Further, the U-shaped openings are used for embedding a radial sealing strip of the rotor, and the width of the U-shaped openings is greater than the thickness of the radial sealing strip.

[0010] Further, the abutting end of the first elastic sheet and the second elastic sheet is provided with an abutting surface.

[0011] Further, the first elastic sheet and the second elastic sheet are symmetrical structures.

[0012] Further, the inclined surface of the first elastic sheet extending upwards forms an angle α1 with a horizontal surface at the abutting position of the first elastic sheet and the second elastic sheet, the inclined surface of the second elastic sheet extending downwards forms an angle α2 with the horizontal surface at the abutting position of the first elastic sheet and the second elastic sheet, and α1 = α2.

[0013] Further, the first elastic sheet and the second elastic sheet are integrally formed by stamping

[0014] In another aspect, the utility model also provides an engine rotor adopting the corner seal spring, the engine rotor further includes a rotor main body, a corner seal and a radial sealing strip; the side of the rotor main body is provided with a corner seal insertion slot, and a sealing strip insertion slot is arranged in the radial direction; the corner seal insertion slot of the rotor main body is successively provided with the corner seal spring and the corner seal from inside to outside, and the radial sealing strip is installed in the sealing strip insertion slot.

[0015] The utility model has the advantages of:

[0016] First, compared with the traditional corner seal spring which only provides elastic force on one side, the corner seal spring of the utility model provides elastic force on both ends of the included angle formed by the first clamping slot and the second clamping slot, and the lateral sealing effect is higher.

[0017] Second, in the preferred implementation mode, the width of the U-shaped opening of the corner seal spring of the utility model is greater than the thickness of the radial sealing strip, so that the corner seal spring has a displacement space during the movement of the rotor, the elastic force can be always provided at the opening end of the included angle of the first elastic sheet and the second elastic sheet, and the sealing is maintained.

[0018] Third, in the preferred implementation, the first elastic sheet and the second elastic sheet of the utility model are provided with a bonding surface at the joint end, which improves the ability to withstand the reverse force during the rotor movement while ensuring that the first elastic sheet and the second elastic sheet provide elasticity, and the angle seal spring structure has high strength;

[0019] Fourth, in the preferred implementation, the first elastic sheet and the second elastic sheet of the utility model are of a symmetrical structure, so that the first elastic sheet and the second elastic sheet are uniformly stressed, and the high-temperature structural strength of the rotor can be fully improved;

[0020] Fifth, the engine rotor adopting the angle seal spring of the utility model provides elasticity through the angle seal spring at the two ends of the included angle and the angle seal insertion slot and the angle seal abutment of the rotor main body, so that the angle seal is tightly bonded to the end cover of the rotor engine, the sealing effect of the lateral sealing device is improved, the problem of mixed gas leakage during compression and combustion is solved, the actual compression ratio of the engine is improved, the fuel consumption is reduced, and the combustion and emission are improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is the perspective structure of the angle seal spring of the embodiment of the utility model;

[0022] Figure 2 is the side view of the angle seal spring of the embodiment of the utility model;

[0023] Figure 3 is the top view of the angle seal spring of the embodiment of the utility model;

[0024] Figure 4 is the schematic view of the included angle of the first elastic sheet and the second elastic sheet of the embodiment of the utility model;

[0025] Figure 5 is the perspective structure of the rotor assembly of the embodiment of the utility model;

[0026] Figure 6 is the top view of the rotor assembly of the embodiment of the utility model;

[0027] Figure 7 is the sectional view of A-A;

[0028] Figure 8 is Figure 7 the enlarged view of the part.

[0029] Among them, 1-first elastic sheet; 10-first clamping groove; 2-second elastic sheet; 20-second clamping groove; 3-rotor main body; 4-angle seal; 5-radial sealing strip; 6-angle seal spring. DETAILED DESCRIPTION

[0030] In order to make the technical personnel in the art better understand the technical solutions of the present application, the present application will be further described in detail below with reference to the drawings and examples.

[0031] The up, down, left, right, front and back orientation terms in the present application are established based on the positional relationship shown in the drawings. Different drawings may change the corresponding positional relationship, so it cannot be understood as a limitation on the scope of protection.

[0032] In the present application, the terms "mounting", "connecting", "connecting", "connecting", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, it can also be detachably connected, it can also be integrally connected, it can also be mechanically connected, it can also be electrically connected or can communicate with each other, it can also be directly connected, it can also be indirectly connected through an intermediate medium, it can be the interconnection of two components, or it can be the interaction relationship between two components. 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.

[0033] The utility model discloses an angle seal spring for rotor engine and rotor adopting the angle seal spring, the angle seal spring is composed of two elastic sheets, the two elastic sheets are connected at one end, and the other end respectively extends upward and downward and forms an included angle with the connected end. The angle seal spring is installed in the angle seal slot of the rotor of the rotor engine, the top of the angle seal spring is installed with an angle seal, and the upward and downward extending ends of the angle seal spring are respectively abutted with the angle seal slot of the rotor and the angle seal. The elastic force is provided through the upper and lower ends of the angle seal spring, so that the angle seal is tightly attached to the inner wall of the end cover in the rotating process, and the lateral sealing performance is improved.

[0034] Example 1

[0035] Referring to the description attached Figures 1-3 An angle seal spring for a rotor engine, comprising a first elastic sheet 1 and a second elastic sheet 2, one end of the first elastic sheet 1 and the second elastic sheet 2 is connected, and the other end is inclined upward and downward from the connection, respectively, to form a V-shaped included angle α.

[0036] Preferably, the first elastic sheet 1 and the second elastic sheet 2 are integrally formed by stamping.

[0037] Preferably, the included angle α is in the range of 15°-30°.

[0038] The first clamping slot 10 and the second clamping slot 20 are U-shaped openings, the U-shaped openings are used for embedding a radial sealing strip of a rotor, and the U-shaped openings of the first clamping slot 10 and the second clamping slot 20 are outward and matched with a radial sealing slot of the rotor of the rotor engine.

[0039] Compared with the traditional angle sealing spring that only provides elastic force on one side, the utility model provides elastic force on both ends of the included angle formed by the first clamping slot 10 and the second clamping slot 20, and the lateral sealing effect is higher.

[0040] Embodiment 2

[0041] The embodiment includes all the structures of the embodiment 1, and the width of the U-shaped opening is greater than the thickness of the radial sealing strip.

[0042] The structure of the embodiment ensures that the angle sealing spring has a displacement space during the movement of the rotor, the opening end of the included angle of the first elastic sheet 1 and the second elastic sheet 2 can always provide elastic force, and the sealing is maintained.

[0043] Embodiment 3

[0044] On the basis of the embodiment 1, the abutting surfaces are arranged at the joint ends of the first elastic sheet 1 and the second elastic sheet 2.

[0045] The structure of the embodiment improves the ability to withstand the reverse force during the movement of the rotor while ensuring that the first elastic sheet 1 and the second elastic sheet 2 provide elastic force, and the angle sealing spring structure has high strength.

[0046] Embodiment 4

[0047] Referring to the drawings accompanying the specification Figure 4 On the basis of the embodiment 1, the inclined surface of the first elastic sheet 1 extending upwards forms an included angle α1 with the horizontal surface at the joint of the first elastic sheet 1 and the second elastic sheet 2, and the inclined surface of the second elastic sheet 2 extending downwards forms an included angle α2 with the horizontal surface at the joint of the first elastic sheet 1 and the second elastic sheet 2, preferably, α1 = α2.

[0048] The structure of the embodiment is symmetrical, so that the first elastic sheet 1 and the second elastic sheet 2 are uniformly stressed, and the high-temperature structural strength of the rotor can be fully improved.

[0049] Embodiment 5

[0050] Referring to the drawings accompanying the specification Figures 5-8 The embodiment provides a rotor adopting the angle sealing spring of the above-mentioned embodiments 1-4, which comprises a rotor body 3, an angle seal 4, a radial sealing strip 5 and an angle sealing spring 6.

[0051] The side of the rotor body 3 is provided with an angle seal insertion slot, and a radial seal strip insertion slot is arranged in the radial direction. The angle seal insertion slot of the rotor body 3 is sequentially provided with an angle seal spring 6 and an angle seal 4 from inside to outside, the angle seal spring 6 and the angle seal 4 are provided with openings matched with the seal strip insertion slot, and a radial seal strip 5 is arranged in the seal strip insertion slot, the end of the radial seal strip 5 is embedded in the U-shaped opening of the angle seal spring 6 and clamped in the opening of the angle seal 4.

[0052] By adopting the structure of the embodiment, the elastic force is provided by the abutment of the two ends of the angle of the angle seal spring 6 with the angle seal insertion slot of the rotor body 3 and the angle seal 4, so that the angle seal 4 is tightly attached to the end cover of the rotor engine, the sealing effect of the lateral sealing device is improved, the problem of leakage of the mixed gas in the compression and combustion process is solved, and the actual compression ratio of the engine is improved, the fuel consumption is reduced, and the combustion and emission are improved.

[0053] The above is only an embodiment of the utility model, and the well-known specific structure and characteristics and the like in the scheme are not described in detail. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. An angle seal spring for a rotary engine, the rotary engine comprising a rotor, the rotor provided with an angle seal slot, the angle seal spring mounted within the angle seal slot and an angle seal, the angle seal mounted on top of the angle seal spring; characterized in that, The corner sealing spring comprises two elastic pieces; one end of the two elastic pieces is connected, and the other end extends upward and downward respectively, and forms an included angle with the connected end; the upward and downward extending ends of the two elastic pieces are respectively in abutment with the corner sealing insertion slot and the corner sealing of the rotor.

2. The corner seal spring of claim 1, wherein, The two elastic pieces are a first elastic piece (1) and a second elastic piece (2); the unconnected end of the first elastic piece (1) and the second elastic piece (2) is respectively provided with a first clamping slot (10) and a second clamping slot (20).

3. The corner seal spring of claim 2, wherein, The first clamping slot (10) and the second clamping slot (20) are U-shaped openings; the U-shaped openings of the first clamping slot (10) and the second clamping slot (20) overlap each other in the radial direction of the rotor of the rotor engine.

4. The corner seal spring of claim 3, wherein, The U-shaped opening is used for embedding and installing the radial sealing strip of the rotor, and the width of the U-shaped opening is greater than the thickness of the radial sealing strip.

5. The corner seal spring of claim 2, wherein, The connected end of the first elastic piece (1) and the second elastic piece (2) is provided with a fitting surface.

6. The corner seal spring of claim 2, wherein, The first elastic piece (1) and the second elastic piece (2) are symmetrical structures.

7. The corner seal spring of claim 6, wherein, The inclined surface of the first elastic piece (1) extending upward forms an included angle α1 with the horizontal surface at the connected end of the first elastic piece (1) and the second elastic piece (2), and the inclined surface of the second elastic piece (2) extending downward forms an included angle α2 with the horizontal surface at the connected end of the first elastic piece (1) and the second elastic piece (2), and α1 = α2.

8. The corner seal spring of claim 2, wherein, The first elastic piece (1) and the second elastic piece (2) are integrally formed by stamping.

9. An engine rotor employing the corner seal spring according to any one of claims 1 to 8, characterized in that, The engine rotor further comprises a rotor body (3), a corner seal (4) and a radial sealing strip (5); the side of the rotor body (3) is provided with a corner sealing insertion slot, and the radial direction is provided with a sealing strip insertion slot; the corner sealing insertion slot of the rotor body (3) is sequentially provided with the corner sealing spring and the corner seal (4) from inside to outside, and the radial sealing strip (5) is installed in the sealing strip insertion slot.

Images