CN205315185U - Sealed diverging device based on kang mingsi PT sprayer measurement experiment - Google Patents

Abstract

The utility model discloses a sealing and diverting device based on the detection experiment of the Cummins PT fuel injector, which comprises a cylindrical installation clip, and the center of the installation clip is provided with stepped through holes with different diameters along the axial direction. The inner wall of the stepped through hole forms several sections of sealing walls. After the Cummins PT injector is inserted, each section of the sealing wall and each O-ring on the Cummins PT injector form three independent positive seals along the insertion direction from left to right. The timing oil chamber, the oil drain chamber, and the oil inlet chamber, the oil inlet hole connected to the oil inlet chamber, the oil drain hole connected to the oil drain chamber, and the timing oil chamber connected to the timing oil chamber are distributed along the axis on the circumferential wall of the installation clamping position. Timing oil inlet, described oil inlet, oil drain and timing oil inlet are all provided with the joint that connects high-pressure oil pipe. The utility model realizes the rapid disassembly and assembly of the sealing splitter and the fuel injector, has the advantages of simple structure, convenient installation and disassembly, etc., can effectively improve the detection efficiency of the fuel injector, and reduce the damage to the fuel injector during detection.

Description

A sealing and splitting device based on the detection experiment of Cummins PT injector

technical field

The utility model relates to a sealing and diverting device based on a detection experiment of a Cummins PT fuel injector.

Background technique

The fuel injector is an important part of the engine. The PT fuel injector is often used in large construction machinery engines, such as mining machinery. Due to the harsh working environment, the engine fuel injector works continuously for a long time, and the precision coupling parts in the fuel injector may It will wear out and have a certain impact on its normal use, so the injector must be tested after it has been used for a period of time. At present, there is no sealing and diverting device matched with the fuel injector detection.

Utility model content

The problem that the utility model aims to solve is to provide a sealing diverter device required for the fuel injector detection experiment, so as to provide the high-pressure fuel supply, timing fuel supply and oil drain and other working conditions required for the fuel injector detection, Make the fuel injector detection more in line with practical application.

For the above situation, the technical solution provided by the utility model is:

A sealing and splitting device based on the detection experiment of Cummins PT fuel injectors, including a cylindrical installation clip, the center of the installation clip is provided with stepped through holes with different diameters along the axial direction, and the inner wall of the stepped through hole Several sections of sealing walls are formed. After being inserted into the Cummins PT injector, each section of the sealing wall and each O-ring on the Cummins PT injector form three independent timing oil chambers and drains along the insertion direction from left to right. An oil chamber and an oil inlet chamber, the circumferential wall of the mounting position is distributed along the axis with an oil inlet hole connected to the oil inlet chamber, an oil drain hole connected to the oil drain chamber, and a timing oil inlet hole connected to the timing oil chamber, The oil inlet hole, the oil drain hole and the timing oil inlet hole are all provided with joints for connecting high-pressure oil pipes.

Further, the sealing wall surfaces of each section are connected by inclined wall surfaces, and the inclined wall surfaces can largely reduce damage to the sealing surface of the fuel injector caused by the sealing splitter device during installation.

Further, the inlet end of the installation clip is provided with a positioning surface, so as to conveniently limit the insertion position of the Cummins PT fuel injector.

Further, the joint is a quick release joint, which is convenient for assembly, disassembly and implementation.

Compared with the prior art, the utility model realizes the rapid disassembly and assembly of the sealing splitter device and the fuel injector by installing the clamping position; the seal ring of the fuel injector is fully utilized through the sealing wall surface, and 3 independent parts are formed without adding parts. Sealed chamber; through the inclined wall surface, the damage to the sealing surface of the injector caused by the sealing diverter device is minimized during installation; at the same time, 3 quick-release joints are installed on the diverter device for convenient detection. Therefore, the device has the advantages of simple structure, convenient installation and disassembly, etc., which can effectively improve the detection efficiency of the fuel injector and reduce the damage to the fuel injector during detection.

Description of drawings

Fig. 1 is a three-dimensional structure diagram of an embodiment of the utility model.

Fig. 2 is a schematic cross-sectional view of an embodiment of the utility model.

Fig. 3 is an enlarged schematic view of I in Fig. 2 .

In the figure: 1-installation card position; 2-oil inlet hole; 3-timing oil hole; 4-oil drain hole; 5-locating surface; 6-seal wall surface; 7-oblique wall surface; High-pressure oil pipe; 10-Cummins PT injector; 11-inlet chamber; 12-drain chamber; 13-timing oil chamber.

detailed description

The purpose of the utility model is further described in detail through specific examples below, and the examples cannot be repeated here one by one, but the implementation of the utility model is not therefore limited to the following examples.

As shown in Figures 1 to 3, a sealing and splitting device based on the detection experiment of Cummins PT injectors includes a cylindrical installation clip 1, and the center of the installation clip 1 is provided with steps with different diameters along the axial direction. The inner wall of the stepped through hole forms several sections of sealing walls 6. After the Cummins PT injector 10 is inserted, each section of the sealing walls 6 and each O-ring on the Cummins PT injector 10 are inserted along the direction of insertion. From left to right, an independent timing oil chamber 13, an oil drain chamber 12, and an oil inlet chamber 11 are formed. On the circumferential wall of the installation card position 1, there are oil inlet holes 2 connected to the oil inlet chamber 11 and oil outlet holes 2 connected to the oil outlet chamber along the axis. The oil drain hole 3 of the chamber 12 and the timing oil inlet hole 4 communicating with the timing oil chamber 13, the oil inlet hole 2, the oil drain hole 3 and the timing oil inlet hole 4 are all provided with a joint 8 connected to the high pressure oil pipe, The joint 8 is a quick-release joint, which is convenient for assembly and disassembly and implementation. In addition, the circumferential wall of the installation clamping position 1 is also provided with.

At the same time, the sealing wall surfaces 6 of each section are connected by an inclined wall surface 7, which can largely reduce damage to the sealing surface of the fuel injector by the sealing splitter device during installation.

The purpose of fast positioning during installation is not achieved. The inlet end of the installation card position 1 is provided with a positioning surface 5 to facilitate the restriction of the insertion position of the Cummins PT fuel injector. When the positioning surface of the Cummins PT fuel injector is aligned with the positioning surface 5 When in contact, it can no longer be extended. At this time, each sealing ring on the Cummins PT fuel injector is just in time to seal with the corresponding sealing wall 6, forming an independent timing oil chamber 13, oil drain chamber 12, and oil inlet chamber 11.

The sealing and splitting device provided in this embodiment is set on the Cummins PT fuel injector 10, and the sealing and splitting device is placed on the U-shaped frame during installation. The card position slot matched with the bracket prevents the displacement and rotation of the installation card position 1. Use the installation card position 1 to press the Cummins PT fuel injector 10 into the sealing flow distribution device. When the positioning surface of the Cummins PT fuel injector 10 contacts with the positioning surface 5 Finally, the installation of the Cummins PT injector 10 and the sealing splitter device is completed; after the installation is completed, each section of the sealing wall 6 and each O-ring seal on the Cummins PT injector 10 form three independent chambers: the oil inlet chamber 11. Oil drain chamber 12, timing oil chamber 13, each independent chamber is connected with oil inlet hole 2, oil drain hole 4, and timing oil inlet hole 3 respectively; during detection, high-pressure oil passes through high-pressure oil pipe 9 and joint 8 Enter the oil inlet hole 2 to complete the oil inlet action of the injector, a part of the high-pressure oil enters the timing oil hole 3 through the high-pressure oil pipe 9 and the joint 8 to complete the timing action of the fuel injector, and the pressure relief oil passes through the oil discharge chamber 12 and the joint 8 Discharge the fuel injector to complete the oil draining action.

The device has the advantages of simple structure, convenient installation and disassembly, etc., which can effectively improve the detection efficiency of the fuel injector and reduce the damage to the fuel injector during detection.

The above-mentioned embodiments of the present utility model are only examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. For those of ordinary skill in the art, on the basis of the above description, other changes or changes in different forms can also be made. It is not necessary and impossible to exhaustively list all the implementation manners here. All modifications, equivalent replacements and improvements made within the spirit and principles of the utility model shall be included in the protection scope of the claims of the utility model.

Claims (4)

1. a kind of seal diverter device based on Cummins PT fuel injector detection experiment, it is characterized in that: It includes a cylindrical installation clamping position (1), the center of the installation clamping position (1) is provided with stepped through holes with different diameters along the axial direction, and the inner wall of the stepped through hole forms several sections of sealing wall surfaces (6), After inserting the Cummins PT fuel injector (10), each section of the sealing wall (6) and each O-ring on the Cummins PT fuel injector (10) form three independent timing oil seals along the insertion direction from left to right. chamber (13), oil drain chamber (12), oil inlet chamber (11), oil inlet holes (2) connected to the oil inlet chamber (11), The oil drain hole (3) connected to the oil drain chamber (12), the timing oil inlet hole (4) connected to the timing oil chamber (13), the oil inlet hole (2), the oil drain hole (3) and the timing The oil inlet holes (4) are all provided with joints (8) for connecting high-pressure oil pipes. 2. the sealing shunting device based on Cummins PT fuel injector detection experiment according to claim 1, is characterized in that: be connected by inclined wall surface (7) between described each section sealing wall surface (6). 3. the seal diverter device based on Cummins PT fuel injector detection experiment according to claim 1, is characterized in that: the entrance end of described installation clamping position (1) is provided with positioning surface (5). 4. the sealing shunting device based on Cummins PT fuel injector detection experiment according to claim 1, is characterized in that: described joint (8) is a quick release joint.