CN219197437U

CN219197437U - Be used for rack test urea injection system

Info

Publication number: CN219197437U
Application number: CN202320234153.7U
Authority: CN
Inventors: 刘凡; 王春勇; 李世龙
Original assignee: Hefei Zhonghai Lanhang Technology Co ltd
Current assignee: Hefei Zhonghai Lanhang Technology Co ltd
Priority date: 2023-02-16
Filing date: 2023-02-16
Publication date: 2023-06-16
Anticipated expiration: 2033-02-16

Abstract

The utility model discloses a urea injection system for bench test run, which comprises a urea box, wherein a matched mounting frame is arranged on the outer side of the urea box, a liquid level sensor is arranged in the urea box, a liquid inlet pipe is arranged at the upper end of the urea box in a penetrating way, and a control box is fixedly arranged on the outer side of the mounting frame; a fixing frame is arranged in the mounting frame, and both sides of the fixing frame are connected with hoops matched with the urea box; one side of the mounting frame is also provided with a mounting plate, a urea pump is mounted on the mounting plate, and a liquid outlet end of the urea pump is provided with a jet orifice. The utility model has compact structure and reasonable design, effectively integrates each unit of the urea injection system of the bench test run, ensures the usability of the urea injection system, ensures the disassembly and assembly effect through the quick-plug connecting pipe, is convenient to move and overhaul and maintain, can well adapt to the bench test run of different space layouts, and ensures the adaptability of the urea injection system.

Description

Be used for rack test urea injection system

Technical Field

The utility model relates to the technical field of test bed equipment, in particular to a urea injection system for bed test.

Background

With the development of exhaust emission standards, emission requirements are more severe, and a great challenge is brought to the control of pollutant emission of diesel vehicles, in order to ensure the reliability of an engine and a system thereof, a bench test is required to be carried out on the whole engine before the engine is delivered, an SCR exhaust aftertreatment technology is required for the bench test, and a urea injection system is an important component in the SCR exhaust aftertreatment.

The existing urea injection system for the bench test is directly used in many cases, lacks the urea injection system specially used for the bench test, is relatively dispersed in installation of each component unit of the urea injection system for the bench test, is directly used for the bench test, is relatively inconvenient in use effect, is relatively poor in use effect, is also inconvenient to assemble and disassemble and maintain, is relatively complex in installation, is inconvenient to move, and cannot guarantee the purification effect of engine tail gas during the bench test.

Disclosure of Invention

The utility model aims to solve the defects that in the prior art, a urea injection system special for bench test is lacked, each component unit of the urea injection system for the vehicle is scattered, the urea injection system is inconvenient to directly use for bench test, the use effect is poor, the urea injection system is inconvenient to assemble, disassemble and maintain, the urea injection system for bench test is complex to install and inconvenient to move.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a be used for rack test urea injection system, includes the urea case, the urea case outside is equipped with assorted installing frame, be equipped with level sensor in the urea case, the urea case upper end link up and is equipped with the feed liquor pipe, and the installing frame outside is fixed and is equipped with the control box.

The mounting frame is internally provided with a fixing frame, and both sides of the fixing frame are connected with hoops matched with the urea box.

The urea box is characterized in that one side of the mounting frame is further provided with a mounting plate, the mounting plate is provided with a urea pump, the liquid outlet end of the urea pump is provided with an injection port, the injection port is in through connection with an injection pipe, the liquid inlet end of the urea pump is in through connection with a liquid outlet pipe, and the other end of the liquid outlet pipe extends to the inner cavity of the urea box.

The urea pump is also connected with an air pipe in a penetrating way, and the other end of the air pipe is connected to the compressed air inlet.

Preferably, a plurality of stabilizing feet are arranged at the lower end of the mounting frame.

Preferably, the other end of the liquid inlet pipe is connected with a liquid supplementing pipe in a penetrating way, and an electromagnetic valve is arranged between the liquid inlet pipe and the liquid supplementing pipe.

Preferably, a plurality of fixing studs for fixing the injection pipe are arranged on the mounting plate corresponding to the injection port, and the injection pipe is a hose.

More preferably, the plurality of fixing studs are positioned at a position 5-10 cm below the jet orifice.

Preferably, a two-position oil-water separator is arranged between the air pipe and the compressed air inlet.

Preferably, the liquid inlet pipe, the liquid supplementing pipe, the liquid outlet pipe, the air pipe and other pipelines all adopt forming pipes, and standard SAE quick connectors are used for connection among pipeline devices.

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

1. according to the utility model, through the integrated modularized design, each scattered unit of the urea injection system is intensively installed on the installation frame, so that the urea injection system is regulated and unified, and the use effect of the urea injection system during the test of the bench is effectively improved;

2. according to the utility model, through the frame structure and the quick-insertion connecting pipe, the disassembly and assembly efficiency is effectively improved, meanwhile, the rack test of different space layouts can be effectively adapted, and the adaptability and usability of the test rack urea injection system are effectively improved.

The utility model has compact structure and reasonable design, effectively integrates each unit of the urea injection system of the bench test run, ensures the usability of the urea injection system, ensures the disassembly and assembly effect through the quick-plug connecting pipe, is convenient to move and overhaul and maintain, can well adapt to the bench test run of different space layouts, and ensures the adaptability of the urea injection system.

Drawings

FIG. 1 is a schematic view of the appearance structure of the present utility model;

FIG. 2 is a schematic side view of the present utility model;

FIG. 3 is a side view of the present utility model;

fig. 4 is a schematic diagram of the urea tank and urea pump according to the present utility model.

In the figure: the device comprises a mounting frame 1, a stabilizing leg 101, a fixing frame 102, a mounting plate 103, a urea box 2, a liquid inlet pipe 21, an electromagnetic valve 211, a liquid supplementing pipe 212, a liquid outlet pipe 22, a hoop 3, a control box 4, a urea pump 5, an injection port 51, a fixing stud 511, an air pipe 52, a two-position oil-water separator 6 and a compressed air inlet 61.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Example 1

Referring to fig. 1-4, a urea injection system for bench test runs through, including urea case 2 for the storage of urea aqueous solution, the urea case 2 outside is equipped with assorted mounting frame 1, fixes urea case 2, be equipped with level sensor in the urea case 2 for detect the surplus of urea aqueous solution, the urea case 2 upper end link up and is equipped with feed liquor pipe 21, is used for sending into urea aqueous solution mounting frame 1 outside to urea case 2 and fixedly is equipped with control box 4.

The mounting frame 1 is internally provided with a fixing frame 102, two sides of the fixing frame 102 are connected with hoops 3 matched with the urea box 2, the urea box 2 is fixed by the hoops 3 matched with the fixing frame 102, and firm mounting of the urea box 2 is guaranteed.

The mounting frame 1 one side still is equipped with mounting panel 103, install urea pump 5 on the mounting panel 103, the play liquid end of urea pump 5 is equipped with jet orifice 51, and through-connection has the jet pipe on the jet orifice 51, sprays urea through the jet pipe, conveniently adapts to the different overall arrangement of different rack test-runs, guarantees urea injection system's adaptability, and the feed liquor end of urea pump 5 is gone up and is connected with drain pipe 22, and the drain pipe 22 other end extends to urea case 2 inner chamber, sends urea aqueous solution into urea pump 5.

The urea pump 5 is also connected with an air pipe 52 in a penetrating way, the other end of the air pipe 52 is connected to a compressed air inlet 61, and compressed air is sent into the urea pump 5 to be matched with the urea pump 5 to spray the urea aqueous solution.

When the urea injection system is used, the urea injection system is arranged at a proper position suitable for bench test run, the urea pump 5 is controlled to be started by the cooperation control box 4, the urea aqueous solution stored in the urea box 2 is fed into the urea pump 5 by the cooperation liquid outlet pipe 22, compressed air is fed into the air pipe 52, the urea aqueous solution is fed out through the injection port 51, the urea aqueous solution is injected through the injection pipe, engine tail gas is purified, different test run benches can be conveniently adapted through the integrated design, and the disassembly and maintenance are also convenient while the adaptability is ensured.

In this embodiment, as shown in fig. 1-3, a plurality of stabilizing feet 101 are disposed at the lower end of the installation frame 1, so as to improve the stability of the urea injection system.

In this embodiment, as shown in fig. 1-4, the other end of the liquid inlet pipe 21 is connected with a liquid supplementing pipe 212 in a penetrating manner, and an electromagnetic valve 211 is disposed between the liquid inlet pipe 21 and the liquid supplementing pipe 212, so that the liquid supplementing pipe 212 is connected to the urea aqueous solution storage device, when the liquid level sensor detects that the liquid level is low, the electromagnetic valve 211 is controlled to be opened by matching with the control box 4, so that urea is automatically supplemented into the urea box 2, and the automation degree of the urea injection system is improved.

In this embodiment, as shown in fig. 1 to 4, a plurality of fixing studs 511 for fixing the injection pipe are provided on the mounting plate 103 corresponding to the injection openings 51, the injection pipe is a hose, and the injection pipe is fixed by the fixing studs 511, so as to ensure the stability of urea injection and ensure the purification effect on the tail gas.

In this embodiment, as shown in fig. 1-4, the horizontal heights of the plurality of fixing studs 511 are located 5-10 cm below the injection port 51, so as to ensure that the urea aqueous solution sent from the injection port 51 is continuously and stably injected from the injection pipe, and ensure the purifying effect on the tail gas of the engine.

In this embodiment, as shown in fig. 1-4, a two-position oil-water separator 6 is disposed between the air pipe 52 and the compressed air inlet 61, and the compressed air is filtered by the two-position oil-water separator 6, so as to avoid the blockage of the urea pump 5 caused by the feeding of impurity air, ensure the spraying effect of urea, and regulate the pressure of the compressed air by matching with the two-position oil-water separator 6, thereby ensuring the stable spraying of urea.

In this embodiment, as shown in fig. 1-4, the liquid inlet pipe 21, the liquid supplementing pipe 212, the liquid outlet pipe 22, the air pipe 52 and other pipes are all formed pipes, so that the beauty of the urea injection system is ensured, and standard SAE quick connectors are used for connection between pipe devices, so that the maintenance of the urea injection system and the replacement of the devices are facilitated.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. The urea injection system for bench test run comprises a urea box (2), and is characterized in that a matched mounting frame (1) is arranged on the outer side of the urea box (2), a liquid level sensor is arranged in the urea box (2), a liquid inlet pipe (21) is arranged at the upper end of the urea box (2) in a penetrating manner, and a control box (4) is fixedly arranged on the outer side of the mounting frame (1);

a fixing frame (102) is arranged in the mounting frame (1), and hoops (3) matched with the urea box (2) are connected to two sides of the fixing frame (102);

the urea box is characterized in that one side of the mounting frame (1) is further provided with a mounting plate (103), the mounting plate (103) is provided with a urea pump (5), the liquid outlet end of the urea pump (5) is provided with an injection port (51), the injection port (51) is connected with an injection pipe in a penetrating way, the liquid inlet end of the urea pump (5) is connected with a liquid outlet pipe (22) in a penetrating way, and the other end of the liquid outlet pipe (22) extends to the inner cavity of the urea box (2);

the urea pump (5) is also connected with an air pipe (52) in a penetrating way, and the other end of the air pipe (52) is connected to a compressed air inlet (61).

2. A urea injection system for bench test runs according to claim 1, characterized in that the mounting frame (1) is provided with a plurality of stabilizing feet (101) at its lower end.

3. The urea injection system for bench test runs according to claim 1, characterized in that the other end of the liquid inlet pipe (21) is connected with a liquid supplementing pipe (212) in a penetrating way, and an electromagnetic valve (211) is arranged between the liquid inlet pipe (21) and the liquid supplementing pipe (212).

4. A urea injection system for bench test-run according to claim 1, characterized in that the mounting plate (103) is provided with a plurality of fixing studs (511) for fixing injection pipes, which are hoses, corresponding to the injection openings (51).

5. A urea injection system for bench test-run according to claim 4, characterized in that a plurality of said fixing studs (511) are positioned at a level of 5-10 cm below the injection opening (51).

6. The urea injection system for bench test runs according to claim 1, characterized in that a two-position oil-water separator (6) is arranged between the air pipe (52) and the compressed air inlet (61).

7. The urea injection system for bench test runs according to claim 1, wherein the liquid inlet pipe (21), the liquid supplementing pipe (212), the liquid outlet pipe (22), the air pipe (52) and other pipelines all adopt forming pipes, and standard SAE quick connectors are used for connection among pipeline devices.