Engine leakage test plugging device

Abstract

The utility model relates to the technical field of engine sealing performance detection, in particular to an engine leakage test plugging device, which comprises a plugging outer plate (1). An air passage structure and a plugging inner plate (2) are respectively arranged on the plugging outer plate (1); an air hole structure is arranged on the blocking inner plate (2); the air passage structure is connected with the air hole structure; the plugging outer plate and the plugging inner plate are combined and connected; the air passage structure and the air hole structure can directly inflate air into the engine from the outside, the inflation pressure is high, and the inflation time is shortened; in the experiment process, the integrated outer plugging plate and the integrated inner plugging plate are attached to the air inlet face of the tested engine, air tightness testing can be carried out on the engine through three cycles of air inflation, pressure maintaining and air suction, and the detection efficiency is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to engine leak detection technology field, specifically, the utility model relates to a kind of engine leak detection plugging device. BACKGROUND

[0002] Leak detection plugging device is a kind of process tool widely used in industrial product production field, to determine whether the whole inside engine exists leakage problem, to ensure that engine does not appear water leakage, oil leakage, gas leakage and other phenomena in use, to ensure leak detection before engine is shipped;And engine intake leak detection plugging is one of quality assurance that engine cylinder pressure and industrial material are made, by plugging whole cover plate to ensure the leakage of material to control internal air pressure, ensure that engine does not appear problem in assembly process, and in engine leak detection process, intake end surface leak detection is to use special leak detection machine to complete leak detection on the fit of engine intake end surface;Current leak detection plugging device can only plug intake hole, cannot directly fill air in engine cylinder;When carrying out air tightness detection on intake end surface, it is also necessary to reserve inspection channel, and the air pressure is small, and the air filling time is long, and the detection efficiency is low.

[0003] Applicant finds that the Chinese patent document with publication number 209117267U discloses a leak detection plugging device on July 16, 2019, comprising a mounting plate and at least two plugging assemblies, the rear side of the mounting plate is detachably fixed on the cylinder, each plugging assembly is detachably fixed on the front side of the mounting plate, the plugging assemblies are spaced apart, and the plugging assemblies are releasably sealed and fixed in the engine exhaust hole or intake hole;The device cannot solve the above technical problems.

[0004] Therefore, in order to improve or solve the above at least one problem, it is necessary to provide a kind of engine leak detection plugging device, which can realize direct filling air in engine cylinder and improve detection efficiency. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of engine leak detection plugging device, which can realize direct filling air in engine cylinder and improve detection efficiency.

[0006] In order to solve the above technical problems, the technical scheme adopted by the utility model is as follows: a kind of engine leak detection plugging device, comprising plugging outer plate;The plugging outer plate is respectively provided with air passage structure and plugging inner plate;The plugging inner plate is provided with air hole structure;The air passage structure is connected with the air hole structure.

[0007] The air passage structure comprises a center air passage; the center air passage is arranged in the blocking outer plate; the blocking outer plate is provided with a mounting groove; the mounting groove is provided with a groove surface through hole; the blocking inner plate is arranged in the mounting groove; the groove surface through hole is communicated with the center air passage, and the groove surface through hole is connected with the blocking inner plate.

[0008] The mounting groove comprises a first mounting groove and a second mounting groove; the groove surface through hole comprises a first groove surface through hole and a second groove surface through hole; the first groove surface through hole is arranged in the first mounting groove; the second groove surface through hole is arranged in the second mounting groove; the blocking outer plate is provided with a quick plug connection hole away from the mounting groove; the quick plug connection hole, the first groove surface through hole and the second groove surface through hole are all communicated with the center air passage.

[0009] The air hole structure comprises an inner plate air hole; the inner plate air hole is arranged on the blocking inner plate; and the inner plate air hole is respectively communicated with the first groove surface through hole and the second groove surface through hole.

[0010] The blocking outer plate is provided with a sealing ring; the sealing ring is connected in the mounting groove; the blocking inner plate is abutted with the sealing ring.

[0011] The sealing ring is provided with an inner chamfer; the blocking inner plate is provided with an inner plate chamfer; the inner plate chamfer is arranged along the edge of the blocking inner plate; the inner plate chamfer is abutted with the inner chamfer.

[0012] The mounting groove is provided with an outer plate screw hole; the blocking inner plate is provided with an inner plate screw hole; the inner plate screw hole is provided with a screw hole chamfer; the inner plate screw hole is provided with a connecting bolt; the connecting bolt is connected with the outer plate screw hole.

[0013] The blocking outer plate is provided with a bolt through hole; the bolt through hole is provided with a mounting bolt; the mounting bolt is connected with the engine; the blocking outer plate is provided with a handle away from the mounting groove; the handle is provided with a handle connecting bolt; the blocking outer plate is provided with a handle connecting thread hole; the handle connecting bolt is connected in the handle connecting thread hole; the mounting bolt and the handle connecting bolt are all connected with a gasket.

[0014] The beneficial effects of the present application are:

[0015] When the device is used, one side of the blocking outer plate provided with the blocking inner plate is fixed on the engine, and the surface is attached to the engine air inlet surface; four blocking inner plates are installed on the blocking outer plate of the device, and the overall air passage forms a fast-charging three-air-passage inclined pipe pressurization, which improves the charging pressure and reduces the charging time; during the experiment, the integrated blocking outer plate and blocking inner plate are attached to the air inlet surface of the measured engine, and the engine is tested for air tightness through three cycles of charging, pressure maintaining and air suction, which effectively improves the detection efficiency.

[0016] Compared with the prior plugging plate, the engine leak test plugging device blocks the engine air inlet surface through the combination structure of the plugging outer plate and the plugging inner plate, ensures the sealing performance, increases the air flow performance, and reduces the air leakage rate by 10 percentage points, and through 100 times of leak test comparison, the air leakage rate and one-time passing rate are improved by 3 percentage points; the device effectively and reasonably avoids the disadvantages of the prior plugging plate integrated forming, and five steel washers are connected to the plugging outer plate through bolts, so that the service life of the parts can be ensured through multiple disassembly and replacement. BRIEF DESCRIPTION OF DRAWINGS

[0017] The specific embodiments of the utility model will be further described in detail below in combination with the drawings, in which:

[0018] Figure 1 It is a structure diagram of the engine leak test plugging device.

[0019] Figure 2 It is an explosion view of the engine leak test plugging device.

[0020] Figure 3 It is a structure diagram of the plugging outer plate of the engine leak test plugging device.

[0021] Figure 4 It is a structure diagram of the plugging inner plate of the engine leak test plugging device.

[0022] Figure 5 It is a structure diagram of the sealing ring of the engine leak test plugging device.

[0023] The marks in the above drawings are:

[0024] The marks in the drawings are: 1, plugging outer plate, 101, center air channel, 102, outer plate screw hole, 103, bolt through hole, 104, handle connection thread hole,

[0025] 2, plugging inner plate, 201, inner plate air hole, 202, inner plate chamfer, 203, inner plate screw hole, 204, screw hole chamfer,

[0026] 3, installation groove, 301, groove through hole,

[0027] 4, first installation groove, 401, first groove through hole,

[0028] 5, second installation groove, 501, second groove through hole,

[0029] 6, quick plug connection hole,

[0030] 7, sealing ring, 701, inner chamfer,

[0031] 8, handle, 801, handle connecting bolt,

[0032] 9. A gasket. DETAILED DESCRIPTION

[0033] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings, and the purpose of the description of the embodiments is to help the technical personnel in the art have a more complete, accurate and in-depth understanding of the inventive concept and technical scheme of the present application, and to help them implement it.

[0034] Figure 1 The engine leak test plugging device shown comprises a plugging outer plate 1; the plugging outer plate 1 is respectively provided with an air passage structure and a plugging inner plate 2; the plugging inner plate 2 is provided with an air hole structure; the air passage structure is connected with the air hole structure.

[0035] The plugging outer plate 1 and the plugging inner plate 2 are combined and connected; the air passage structure and the air hole structure can realize direct inflation of the engine from the outside, the inflation pressure is strong, and the inflation time is reduced; during the experiment, the integrated plugging outer plate 1 and plugging inner plate 2 are attached to the air inlet surface of the engine to be tested, and the engine can be tested for air tightness through three cycles of inflation, pressure maintenance and air suction, thereby effectively improving the detection efficiency; the plugging outer plate 1 and the plugging inner plate 2 are combined to plug the air inlet surface of the engine, which not only provides the function of directly inflating the engine, but also greatly improves the sealing performance.

[0036] The air passage structure comprises a central air passage 101; the central air passage 101 is arranged in the plugging outer plate 1; the plugging outer plate 1 is provided with a mounting groove 3; the mounting groove 3 is provided with a groove surface through hole 301; the plugging inner plate 2 is arranged in the mounting groove 3; the groove surface through hole 301 is in communication with the central air passage 101, and the groove surface through hole 301 is connected with the plugging inner plate 2.

[0037] The plugging outer plate 1 is a square plate; one end of the top of the plugging outer plate 1 is provided with an inclined surface; the central air passage 101 is a circular hole and is a through hole; the central air passage 101 penetrates through the plugging outer plate 1 along the long edge direction of the plugging outer plate 1; both ends of the central air passage 101 are respectively provided with a No. 2 threaded hole; both ends of the central air passage 101 are closed; the cross sections of the mounting groove 3 and the plugging inner plate 2 are both "convex"; the plugging outer plate 1 is provided with four mounting grooves 3; the plugging inner plate 2 is fixedly connected in the mounting groove 3.

[0038] The mounting groove 3 comprises a first mounting groove 4 and a second mounting groove 5; the groove surface through hole 301 comprises a first groove surface through hole 401 and a second groove surface through hole 501; the first groove surface through hole 401 is arranged in the first mounting groove 4; the second groove surface through hole 501 is arranged in the second mounting groove 5; the side of the plugging outer plate 1 away from the mounting groove 3 is provided with a quick plug connection hole 6; the quick plug connection hole 6, the first groove surface through hole 401 and the second groove surface through hole 501 are all in communication with the central air passage 101.

[0039] The device is provided with a first installation groove 4; the device is provided with three second installation grooves 5; the diameter of the first groove surface through hole 401 is larger than that of the second groove surface through hole 501; the quick plug connection hole 6 is a quick plug connection port for blocking the air channel; the quick plug connection hole 6 is in communication with the central air channel 101, and the quick plug connection hole 6 is directly in communication with the first groove surface through hole 401; the three second groove surface through holes 501 are all in communication with the central air channel 101; the quick plug connection hole 6 is provided with a thread, and an external gas supply device is threadedly connected with the quick plug connection hole 6; the gas enters the central air channel 101 from the quick plug connection hole 6 to maintain pressure; the gas enters the installation groove 3 from the first groove surface through hole 401 and the second groove surface through hole 501 to store pressure, and finally the gas is blown out from the inner plate air hole 201 with a smaller hole diameter to realize the effect of flow contraction; the effect of flow contraction can pressurize the air to realize manual leak detection on the intake side of the engine.

[0040] The air hole structure includes an inner plate air hole 201; the inner plate air hole 201 is arranged on the blocking inner plate 2; and the inner plate air hole 201 is in communication with the first groove surface through hole 401 and the second groove surface through hole 501 respectively.

[0041] The inner plate air hole 201 is a circular hole and a through hole; the inner plate air hole 201 has a smaller hole diameter than the first groove surface through hole 401; the gas enters the engine through the inner plate air hole 201.

[0042] The blocking outer plate 1 is provided with a sealing ring 7; the sealing ring 7 is connected in the installation groove 3; the blocking inner plate 2 is tightly abutted against the sealing ring 7.

[0043] The sealing ring 7 has a "convex" structure; the blocking inner plate 2 is connected in the installation groove 3 by means of bolts, and the blocking inner plate 2 tightly presses the sealing ring 7 in the installation groove 3; the sealing ring 7 can enhance the sealing performance of the connection between the blocking inner plate 2 and the installation groove 3; at the same time, the sealing ring 7 can limit the blocking inner plate 2.

[0044] The sealing ring 7 is provided with an inner chamfer 701; the blocking inner plate 2 is provided with an inner plate chamfer 202; the inner plate chamfer 202 is arranged along the edge of the blocking inner plate 2; the inner plate chamfer 202 is tightly abutted against the inner chamfer 701.

[0045] A circle of inner chamfers 701 is arranged along the inner wall of the sealing ring 7; the inner plate chamfer 202 is arranged along the edge of the blocking inner plate 2; when the blocking inner plate 2 tightly presses the sealing ring 7 in the installation groove 3, the bottom surface of the inner plate chamfer 202 is tightly abutted against the top surface of the inner chamfer 701; thus, the sealing ring 7 can enhance the sealing performance of the connection between the blocking inner plate 2 and the installation groove 3; at the same time, the sealing ring 7 can limit the blocking inner plate 2.

[0046] The installation groove 3 is provided with an outer plate screw hole 102; the blocking inner plate 2 is provided with an inner plate screw hole 203; the inner plate screw hole 203 is provided with a screw hole chamfer 204; the inner plate screw hole 203 is provided with a connecting bolt; and the connecting bolt is connected with the outer plate screw hole 102.

[0047] The connecting bolt passes through the inner plate screw hole 203 and is connected at the end in the outer plate screw hole 102; two outer plate screw holes 102 are arranged in the installation groove 3; two inner plate screw holes 203 are arranged on the plugging inner plate 2; and the screw hole chamfer 204 can guide the connecting bolt.

[0048] The plugging outer plate 1 is provided with a bolt through hole 103; the bolt through hole 103 is provided with an installation bolt; the installation bolt is connected with the engine; the plugging outer plate 1 is provided with a handle 8 away from the installation groove 3; the handle 8 is provided with a handle connecting bolt 801; the plugging outer plate 1 is provided with a handle connecting screw hole 104; the handle connecting bolt 801 is connected in the handle connecting screw hole 104; and the installation bolt and the handle connecting bolt 801 are both connected with a gasket 9.

[0049] The plugging outer plate 1 is provided with five bolt through holes 103; the bolt through holes 103 are all connected with installation bolts, and the installation bolts can realize stable connection between the plugging outer plate 1 and the engine; the handle 8 is a U-shaped structure; the two ends of the handle 8 are respectively connected with handle connecting bolts 801; the end of the handle connecting bolt 801 is provided with a thread; the handle connecting screw hole 104 is a threaded hole; the handle connecting bolt 801 is screwed with the handle connecting screw hole 104; and the gasket 9 is a steel gasket.

[0050] The specific working process of the utility model is as follows:

[0051] Firstly, the plugging inner plate 2 is installed in the installation groove 3 of the plugging outer plate 1; and the sealing ring 7 is installed in the installation groove 3; the plugging inner plate 2 is pressed against the sealing ring 7; the handle 8 is installed on the plugging outer plate 1; the plugging outer plate 1 provided with the plugging inner plate 2 is fixed on the engine through the handle 8, and the surface is attached to the engine air inlet surface, and then the installation bolt is connected and fastened; the external air supply equipment is screwed with the quick plug connection hole 6; the gas enters the central air duct 101 from the quick plug connection hole 6, and pressure is maintained; the gas enters the installation groove 3 from the first groove surface through hole 401 and the second groove surface through hole 501, and pressure is stored, and finally the gas is blown out from the inner plate air hole 201 with a smaller hole diameter, so that the flow contraction effect is realized; the flow contraction effect can pressurize the air, and manual leak detection is realized on the engine air inlet side.

[0052] The utility model is described above with reference to the drawings. Obviously, the utility model is not limited to the above-mentioned mode. As long as various non-essential improvements are made by adopting the method concept and technical scheme of the utility model, or the above-mentioned concept and technical scheme of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. An engine leak test plugging device, characterized by: The application relates to a sealing plate, which comprises a sealing outer plate (1), air passage structures and a sealing inner plate (2) arranged on the sealing outer plate (1) respectively, and air hole structures arranged on the sealing inner plate (2).

2. An engine leak sealing device according to claim 1, wherein: The air passage structures comprise a central air passage (101) arranged in the sealing outer plate (1), and the sealing outer plate (1) is provided with a mounting groove (3), the mounting groove (3) is provided with a groove surface through hole (301), the sealing inner plate (2) is arranged in the mounting groove (3), the groove surface through hole (301) is communicated with the central air passage (101), and the groove surface through hole (301) is connected with the sealing inner plate (2).

3. An engine leak sealing device according to claim 2, wherein: The mounting groove (3) comprises a first mounting groove (4) and a second mounting groove (5), the groove surface through hole (301) comprises a first groove surface through hole (401) and a second groove surface through hole (501), the first groove surface through hole (401) is arranged in the first mounting groove (4), the second groove surface through hole (501) is arranged in the second mounting groove (5), the sealing outer plate (1) is provided with a quick plug connection hole (6) on the side away from the mounting groove (3), the quick plug connection hole (6), the first groove surface through hole (401) and the second groove surface through hole (501) are all communicated with the central air passage (101).

4. An engine leak sealing device according to claim 3, wherein: The air hole structures comprise inner plate air holes (201) arranged on the sealing inner plate (2), and the inner plate air holes (201) are respectively communicated with the first groove surface through hole (401) and the second groove surface through hole (501).

5. An engine leak sealing device according to claim 4, wherein: The sealing outer plate (1) is provided with a sealing ring (7) arranged in the mounting groove (3), and the sealing inner plate (2) is tightly abutted against the sealing ring (7).

6. An engine leak sealing device according to claim 5, wherein: The sealing ring (7) is provided with an inner chamfer (701), the sealing inner plate (2) is provided with an inner plate chamfer (202), the inner plate chamfer (202) is arranged along the edge of the sealing inner plate (2), and the inner plate chamfer (202) is tightly abutted against the inner chamfer (701).

7. An engine leak test plugging device according to any one of claims 2 to 6, wherein: The mounting groove (3) is provided with an outer plate screw hole (102), the sealing inner plate (2) is provided with an inner plate screw hole (203), the inner plate screw hole (203) is provided with a screw hole chamfer (204), the inner plate screw hole (203) is provided with a connecting bolt, and the connecting bolt is connected with the outer plate screw hole (102).

8. An engine leak sealing device according to claim 7, wherein: The sealing outer plate (1) is provided with a bolt through hole (103), the bolt through hole (103) is provided with a mounting bolt, the mounting bolt is connected with an engine, the sealing outer plate (1) is provided with a handle (8) on the side away from the mounting groove (3), the handle (8) is provided with a handle connecting bolt (801), the sealing outer plate (1) is provided with a handle connecting screw hole (104), the handle connecting bolt (801) is connected in the handle connecting screw hole (104), and the mounting bolt and the handle connecting bolt (801) are both connected with a gasket (9).

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