CN217029076U

CN217029076U - Structure for sealing high-temperature waste gas by utilizing gas ring

Info

Publication number: CN217029076U
Application number: CN202220477589.4U
Authority: CN
Inventors: 曾黎; 覃海玉; 董家枝; 樊心龙; 王春玲; 仇海龙; 杨仕明; 余超
Original assignee: Guangxi Yuchai Machinery Co Ltd
Current assignee: Guangxi Yuchai Machinery Co Ltd
Priority date: 2022-03-04
Filing date: 2022-03-04
Publication date: 2022-07-22
Anticipated expiration: 2032-03-04

Abstract

The utility model discloses a structure for sealing high-temperature waste gas by using a gas ring, belongs to the technical field of engines, and solves the problem of leakage of high-temperature waste gas at a joint of a segmented exhaust pipe. This structure includes first manifold and second manifold, first manifold peg graft in the second manifold, the annular has been seted up on the inner wall of second manifold, the second manifold on set up the inlet port with the annular intercommunication, the inlet port on be connected with the intake pipe. The utility model discloses a structure for sealing high-temperature waste gas by using an air ring, which has the characteristics of high efficiency and reliability in sealing, continuous work, reliability, durability, wide application range and strong practicability.

Description

Structure for sealing high-temperature waste gas by utilizing gas ring

Technical Field

The utility model relates to the technical field of engines, in particular to a structure for sealing high-temperature waste gas by using a gas ring.

Background

At present, in a turbocharged engine, a supercharger is connected with an engine cylinder head through one or more sections of exhaust manifolds, the exhaust manifolds are important parts for connecting the engine cylinder head with the supercharger, and high-temperature gas after combustion in each cylinder of the engine flows to a supercharger vortex end through the exhaust manifolds. In the process, the exhaust manifold functions to support the supercharger, contain and deliver high temperature gases. Under the large background of upgrading of engine emission, the temperature of engine exhaust gas is higher and higher, the working environment of an exhaust manifold is worse, the high-temperature thermal expansion deformation of an exhaust pipe is correspondingly increased, the exhaust pipe is cracked and warped to cause air leakage of an exhaust system, the working efficiency of an engine is influenced if the exhaust pipe is cracked and warped, the emission of the engine is beyond the standard if the exhaust pipe is serious, and even safety risks such as ignition are possibly caused. The existing split type exhaust manifold has small probability of breakage, but in the split type structure, the joint of the exhaust manifold is easy to leak gas, so that high-temperature gas leakage is still caused, and adverse effects are brought.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problems of the prior art, provides a structure for sealing high-temperature waste gas by using a gas ring, solves the problem of leakage of the high-temperature waste gas at the joint of a segmented exhaust pipe, and has the characteristics of wide application range and strong practicability.

The technical scheme adopted by the utility model is as follows: the utility model provides an utilize structure of gaseous ring seal high temperature waste gas, includes first manifold and second manifold, first manifold peg graft in the second manifold, the annular has been seted up on the inner wall of second manifold, the second manifold on set up the inlet port with the annular intercommunication, the inlet port on be connected with the intake pipe.

As further improvement, be equipped with the adapter sleeve on the link of second manifold, first manifold peg graft in the adapter sleeve, the annular set up on the inner wall of adapter sleeve, the inlet port set up at the adapter sleeve.

Furthermore, the connecting sleeve is provided with a pipe joint, one end of the pipe joint is communicated with the air inlet hole, and the other end of the pipe joint is communicated with the air inlet pipe.

Further, the pipe joint is in threaded connection with the connecting sleeve.

Furthermore, the pipe joint and the connecting sleeve are integrally formed.

Furthermore, the connecting sleeve is in clearance fit with the first manifold, and the mounting hole of the connecting sleeve, the pipe holes of the first manifold and the second manifold are located on the same axis.

Further, the connecting sleeve and the second manifold are integrally formed.

Furthermore, a pressurizing groove is further formed in the inner wall of the connecting sleeve, the annular groove is communicated with the pressurizing groove, and the width of the pressurizing groove is smaller than that of the annular groove.

Further, the cross section of the ring groove is square or arc.

A method for sealing high-temperature waste gas by using an air ring is characterized in that an annular groove is formed in a second manifold, and after a first manifold is inserted into the second manifold, compressed air with pressure higher than the pressure in an exhaust manifold is introduced into the annular groove, so that the sealing of the joint of the first manifold and the second manifold is realized.

Advantageous effects

Compared with the prior art, the utility model has the following advantages:

according to the structure for sealing high-temperature waste gas by using the air ring, the annular groove is formed in the second manifold, the annular groove is positioned at the joint of the second manifold and the first manifold, compressed air is introduced into the annular groove by using the exhaust pipe, the pressure of the compressed air is ensured to be greater than that of the high-temperature waste gas in the exhaust manifold, the compressed air forms the high-pressure air ring in the annular groove, the high-temperature waste gas is blocked due to the existence of pressure difference, the leakage of the high-temperature waste gas is prevented, the compressed air is conveniently supplied to an engine or the whole vehicle, the environment is protected, no pollution is caused, the high-temperature waste gas is sealed, the high-temperature waste gas is efficient and reliable, the high-temperature waste gas is continuously operated, no service life damage is caused, the high reliability and the durability are realized, and the characteristics of strong practicability and wide application range are realized.

The method for sealing high-temperature waste gas by using the gas ring is a non-contact soft sealing method, the connecting gap between the exhaust manifolds is sealed by compressed gas, the problem that expansion and contraction of the exhaust pipe are compensated by thermal expansion is effectively solved, the problem that high-temperature waste gas is not tightly sealed by the sealing ring is solved, the sealing effect is reliable, no pollution is caused to the environment, and the loss cost of the sealing element can be saved.

Drawings

FIG. 1 is a schematic front view of the present invention;

fig. 2 is an enlarged view of the present invention in partial section.

Wherein: 1-a first manifold, 2-a second manifold, 3-a connecting sleeve, 4-an air inlet pipe, 5-a pipe joint, 6-a ring groove, 7-a pressurizing groove, 8-a mounting hole and 9-an air inlet hole.

Detailed Description

The utility model will be further described with reference to specific embodiments shown in the drawings.

Referring to fig. 1-2, the structure for sealing high temperature exhaust gas by using an air ring of the present invention comprises a first manifold 1 and a second manifold 2, wherein the first manifold 1 is inserted into the second manifold 2, the inner wall of the second manifold 2 is provided with an annular groove 6, the second manifold 2 is provided with an air inlet hole 9 communicated with the annular groove 6, the air inlet hole 9 is connected with an air inlet pipe 4, the first manifold 1 is inserted into the second manifold 2, the first manifold 1 and the second manifold 2 are in clearance fit, the annular groove 6 is located at the joint of the second manifold 2 and the first manifold 1, compressed air is introduced into the annular groove 6 by using an exhaust pipe 4, the pressure of the compressed air is ensured to be greater than the pressure of the high temperature exhaust gas in the exhaust manifold, the compressed air can be supplied by an air tank or an air compressor driven by an engine, the compressed air enters the annular groove 6 to form a high pressure air ring due to the existence of pressure difference, high temperature waste gas is blockked, prevents to leak outside, and because of compressed air pressure is greater than high temperature waste gas, compressed air can leak to high temperature waste gas side and atmosphere side, under the purpose that reaches zero leakage of high temperature waste gas, compressed air's leakage does not cause the pollution to atmospheric environment, and this kind of leakage is allowed.

Specifically, a connecting sleeve 3 is arranged at the connecting end of the second manifold 2, the first manifold 1 is inserted into the connecting sleeve 3, the annular groove 6 is formed in the inner wall of the connecting sleeve 3, the air inlet hole 9 is formed in the connecting sleeve 3, the connecting sleeve 3 is used for connection, the wall thickness is increased, and the structural performance stability is facilitated.

Preferably, the connecting sleeve 3 is provided with a pipe joint 5, one end of the pipe joint 5 is communicated with the air inlet hole 9, the other end of the pipe joint 5 is communicated with the air inlet pipe 4, the pipe joint 5 is connected to facilitate the connection of the air inlet pipe 4, and the installation of the air inlet pipe 4 is firmer and more convenient.

Further, the pipe joint 5 is in threaded connection with the connecting sleeve 3, the pipe joint 5 can be rapidly installed and detached by using threaded connection, and when the air inlet pipes 4 with different pipe diameters need to be connected, the pipe joints 5 with different models can be replaced to meet the requirements of field use.

Furthermore, the pipe joint 5 and the connecting sleeve 3 are integrally formed, and if the pipe joint and the connecting sleeve are integrally formed, the production and the manufacture are convenient, the structure is more stable, the stress is not easy to generate, and the fracture is not easy to occur at the connecting part.

Further, adapter sleeve 3 and first manifold 1 clearance fit, the mounting hole 8 of adapter sleeve 3 is located the same axis with the tube hole of first manifold 1, second manifold 2, and adapter sleeve 3 and first manifold 1 receive behind the high temperature waste gas can produce expend with heat and contract with cold, and clearance fit is convenient for install, and when first manifold 1 was heated the back, the clearance diminishes to prevent that the high temperature waste gas from leaking.

Further, adapter sleeve 3 and second manifold 2 integrated into one piece, the manufacturing of being convenient for, the structure is more stable, is difficult for producing stress, is difficult for breaking to take place in the junction.

Further, a pressurizing groove 7 is further formed in the inner wall of the connecting sleeve 3, the annular groove 6 is communicated with the pressurizing groove 7, the width of the pressurizing groove 7 is smaller than that of the annular groove 6, double-layer air ring sealing is adopted, the sealing effect of the joint of the second manifold 2 and the first manifold 1 is enhanced, the volume of the pressurizing groove 7 is smaller than that of the annular groove 6, the gas pressure sprayed out of the pressurizing groove 7 is stronger, and the sealing effect is better.

Furthermore, the cross section of the ring groove 6 is square or arc, and the adaptive structure can be selected to meet the use requirement according to different use environments.

When the structure for sealing high-temperature waste gas by using the gas ring is used, the ring groove 6 is formed in the second manifold 2, the ring groove 6 is positioned at the joint of the second manifold 2 and the first manifold 1, the exhaust pipe 4 is used for introducing compressed air into the ring groove 6, the pressure of the compressed air is ensured to be greater than that of the high-temperature waste gas in the exhaust manifold, the compressed air can be supplied by a gas tank and also can be supplied by an air compressor driven by an engine, the compressed gas enters the ring groove 6 to form the high-pressure gas ring, and because of the existence of pressure difference, the high-temperature waste gas is blocked, the outward leakage is prevented, and the sealing effect is achieved. According to the structure for sealing high-temperature waste gas by using the gas ring, the ring groove is formed in the second manifold, and the exhaust pipe is used for introducing compressed air into the ring groove, so that the sealing effect is achieved, the sealing is efficient and reliable, the continuous work is realized, the service life damage is avoided, the reliability and the durability are high, and the characteristics of strong practicability and wide application range are achieved.

The above description is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various changes and modifications without departing from the structure of the present invention, which will not affect the effect of the implementation of the present invention and the practicability of the patent.

Claims

1. The utility model provides an utilize structure of gaseous ring seal high temperature waste gas, includes first manifold (1) and second manifold (2), first manifold (1) peg graft in second manifold (2), its characterized in that, annular (6) have been seted up on the inner wall of second manifold (2), second manifold (2) on set up inlet port (9) with annular (6) intercommunication, inlet port (9) on be connected with intake pipe (4).

2. The structure for sealing high temperature exhaust gas by using air ring as claimed in claim 1, wherein the connecting end of the second manifold (2) is provided with a connecting sleeve (3), the first manifold (1) is inserted into the connecting sleeve (3), the annular groove (6) is formed on the inner wall of the connecting sleeve (3), and the air inlet (9) is formed in the connecting sleeve (3).

3. The structure for sealing high-temperature exhaust gas by using an air ring as claimed in claim 2, wherein a pipe joint (5) is arranged on the connecting sleeve (3), one end of the pipe joint (5) is communicated with the air inlet hole (9), and the other end of the pipe joint (5) is communicated with the air inlet pipe (4).

4. A structure for sealing high-temperature exhaust gas using an air ring according to claim 3, wherein the pipe joint (5) is screw-coupled to the coupling sleeve (3).

5. A structure for sealing high-temperature exhaust gas by using an air ring according to claim 3, characterized in that the pipe joint (5) is integrally formed with the connecting sleeve (3).

6. The structure for sealing high-temperature exhaust gas by using an air ring according to claim 2, wherein the connecting sleeve (3) is in clearance fit with the first manifold (1), and the mounting hole (8) of the connecting sleeve (3) and the pipe holes of the first manifold (1) and the second manifold (2) are located on the same axis.

7. The structure for sealing high-temperature exhaust gas by using an air ring as claimed in claim 2, wherein the connecting sleeve (3) and the second manifold (2) are integrally formed.

8. The structure for sealing high-temperature exhaust gas by using an air ring according to claim 2, wherein a pressurizing groove (7) is further formed in the inner wall of the connecting sleeve (3), the annular groove (6) is communicated with the pressurizing groove (7), and the width of the pressurizing groove (7) is smaller than that of the annular groove (6).

9. The structure for sealing high temperature exhaust gas using an air ring according to claim 1, wherein the cross section of the ring groove (6) is square or arc.