CN215866594U

CN215866594U - Special gas distributor for PEMS equipment

Info

Publication number: CN215866594U
Application number: CN202121994654.2U
Authority: CN
Inventors: 张英志; 王敬明; 李兆胜; 王立祥
Original assignee: Zibo Qinghe Testing Technology Co ltd
Current assignee: Zibo Qinghe Testing Technology Co ltd
Priority date: 2021-08-24
Filing date: 2021-08-24
Publication date: 2022-02-18
Anticipated expiration: 2031-08-24

Abstract

The utility model relates to a special gas distributor for PEMS equipment. Comprises a shell, a power supply interface, an NO input port, and an O₂Input port, N₂The device comprises an input port, a first pressure sensor, a second pressure sensor, a third pressure sensor, a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve, a first flowmeter, a second flowmeter, a third flowmeter, a first one-way valve, a second one-way valve, a third one-way valve, an ozone generator, a gas mixing tank, a gas outlet and a control panel, wherein the NO input port is connected with an inlet of the gas mixing tank through an NO pipeline, and the O is connected with the inlet of the gas mixing tank through an NO pipeline₂The input port passes through O₂The pipeline is connected with the air inlet end of the ozone generator, and N is₂Input port through N₂The pipeline is connected with the air inlet end of the ozone generator, the air outlet end of the ozone generator is connected with the inlet of the air mixing tank, and the outlet of the air mixing tank is connected with the air outlet. The utility model can realize the distribution of gas.

Description

Special gas distributor for PEMS equipment

Technical Field

The utility model relates to the field of gas testing, in particular to a special gas distributor for PEMS equipment.

Background

PEMS is required when performing actual road tests in motor vehicles. The PEMS test is a type II test specified by the current national six standards and is a test which needs to be done on new and old vehicles. The PEMS system comprises a plurality of component modules: GS (measured gas data), PN module (module that measures the amount of particulate matter), GD module (gas split module), and so on. Detecting NO if CLD principle adopted inside GS gas module_X(NO and NO)₂) A reformer is required. This is due to the CLD principle being able to detect only the concentration of NO gas, not NO₂Concentration of (2), the purpose of the reformer is to convert NO₂To NO. However, the reformer cannot convert all NO₂Conversion to NO, but rather a decrease in efficiency with internal catalyst failure. The national six standards require that the conversion efficiency is more than 95%. There is also a requirement for the test period, i.e. one efficiency test is done a month. The present invention is directed to the test NO mentioned in the national six standards_XA test method of conversion efficiency provides a special gas distributor for PEMS equipment.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a special gas distributor for PEMS equipment, aiming at testing NO mentioned in the national six standards_XThe conversion efficiency test method is designed to realize the distribution of gas.

In order to achieve the purpose, the utility model provides the following technical scheme: a gas distributor special for PEMS equipment comprises a shell, a power supply interface, an NO input port, and an O₂Input port, N₂The ozone generator comprises a shell, a power supply interface, an NO input port, an O input port, a third pressure sensor, a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve, a first flowmeter, a second flowmeter, a third flowmeter, a first one-way valve, a second one-way valve, a third one-way valve, an ozone generator, a gas mixing tank, a gas outlet and a control panel, wherein the shell comprises a front plate, a rear plate, a side plate and a bottom plate, the power supply interface, the NO input port, the O input port, the third pressure sensor, the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve, the first flowmeter, the second flowmeter, the third flowmeter, the first one-way valve, the second one-way valve, the ozone generator, the gas mixing tank, the gas outlet and the control panel are arranged on the shell, the shell comprises a front plate, a rear plate, a side plate and a bottom plate, the power supply interface, the NO input port, the O input port, the second pressure sensor, the third electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve, the second flowmeter, the third electromagnetic valve, the second flowmeter, the third one-way valve, the second flowmeter, the third one-way valve, the second flowmeter, the third one-way valve, the gas mixing tank, the second flow meter, the flowmeter, the gas meter, the third one-way valve, the second flow meter, the second one-way valve, the second flow meter, the gas mixer, the second one-way valve, the third one-way valve, the second one-way valve, the₂Input port, N₂Input port, gas outlet, control panel set up on the front bezel of casing, first pressure sensor, second pressure sensor, third pressure sensor, first solenoid valve, second solenoid valve, third solenoid valve, first flowmeter, second flowmeter, third flowmeter, first check valve, second check valve, third check valve, ozone generator, gas mixing tank set up the inside of casing, the NO input port passes through the import of NO tube coupling gas mixing tank, first pressure sensor, first solenoid valve, first flowmeter, first check valve have set gradually on the NO tube, O₂The input port passes through O₂Pipeline is connected with the air inlet end of the ozone generator, and the oxygen is introduced into the ozone generator₂A second pressure sensor, a second electromagnetic valve, a second flowmeter and a second one-way valve are sequentially arranged on the pipeline, and N is₂Input port through N₂The pipeline is connected with the air inlet end of the ozone generator, and N is₂The pipeline is sequentially provided with a third pressure sensor, a third electromagnetic valve, a third flowmeter and a third one-way valve, the air outlet end of the ozone generator is connected with the inlet of the air mixing tank, and the outlet of the air mixing tank is connected with the air outlet.

Furthermore, a handle is arranged at the position of the side plate protruding out of the front plate.

Furthermore, a reinforcing block is arranged between the position of the side plate protruding out of the rear plate and the rear plate.

Furthermore, a supporting seat is arranged at the position of the side plate protruding out of the bottom plate.

Furthermore, a shockproof pad is arranged at the bottom of the supporting seat.

Furthermore, the front plate, the rear plate, the side plates and the bottom plate are all provided with soft glue layers.

Further, the shell is made of stainless steel.

Furthermore, control panel includes display screen, control button, pilot lamp, power source connection power cord.

Furthermore, the front plate, the rear plate, the side plates and the bottom plate are connected or clamped through screws.

Furthermore, a nameplate is arranged on the front plate.

The PEMS actual road test is a test item required by the national six standards of motor vehicles, and relates to items such as type inspection of a new vehicle, factory inspection of the new vehicle, spot inspection of the in-use vehicle and the like. The six standards promulgated require that NO be made if a gas detector of the CLD principle is used_XAnd the test period is once per month, so as to ensure the accuracy of the test. The utility model relates to a special gas distributor for PEMS equipment, which conforms to the national six standards GB 18352.6-2016, aims at a recommended test schematic diagram in CD5.5 in the national six standards GB 18352.6-2016, and fills up the market gap by combining the structural characteristics of a PEMS system.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.

Fig. 1 is a schematic connection diagram of the present invention.

FIG. 2 is a schematic diagram of the present invention.

FIG. 3 is a schematic diagram of the present invention.

Reference numerals: 1. NO input port, 2, O₂Input port, 3, N₂Input port, 4, first pressure sensor, 5, second pressure sensor, 6, third pressure sensor, 7, first solenoid valve, 8, second solenoid valve, 9, third solenoid valve10, a first flowmeter, 11, a second flowmeter, 12, a third flowmeter, 13, a first one-way valve, 14, a second one-way valve, 15, a third one-way valve, 16, an ozone generator, 17, a gas mixing tank, 18, a gas outlet, 19, a shell, 20, a power interface, 21, a control panel, 22, a nameplate, 23, a handle, 24, a reinforcing block, 25 and a supporting seat.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "axial", "circumferential", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the utility model discloses a special gas distributor for PEMS equipment, which comprises a shell, a power supply interface, an NO input port, an O₂Input port, N₂The ozone generator comprises a shell, a power supply interface, an NO input port, an O input port, a third pressure sensor, a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve, a first flowmeter, a second flowmeter, a third flowmeter, a first one-way valve, a second one-way valve, a third one-way valve, an ozone generator, a gas mixing tank, a gas outlet and a control panel, wherein the shell comprises a front plate, a rear plate, a side plate and a bottom plate, the power supply interface, the NO input port, the O input port, the third pressure sensor, the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve, the first flowmeter, the second flowmeter, the third flowmeter, the first one-way valve, the second one-way valve, the ozone generator, the gas mixing tank, the gas outlet and the control panel are arranged on the shell, the shell comprises a front plate, a rear plate, a side plate and a bottom plate, the power supply interface, the NO input port, the O input port, the second pressure sensor, the third electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve, the second flowmeter, the third electromagnetic valve, the second flowmeter, the third one-way valve, the second flowmeter, the third one-way valve, the second flowmeter, the third one-way valve, the gas mixing tank, the second flow meter, the flowmeter, the gas meter, the third one-way valve, the second flow meter, the second one-way valve, the second flow meter, the gas mixer, the second one-way valve, the third one-way valve, the second one-way valve, the₂Input port, N₂Input port, gas outlet, control panel set up on the front bezel of casing, first pressure sensor, second pressure sensor, third pressure sensor, first solenoid valve, second solenoid valve, third solenoid valve, first flowmeter, second flowmeter, third flowmeter, first check valve, second check valve, third check valve, ozone generator, gas mixing tank set up the inside of casing, the NO input port passes through the import of NO tube coupling gas mixing tank, first pressure sensor, first solenoid valve, first flowmeter, first check valve have set gradually on the NO tube, O₂The input port passes through O₂Pipeline is connected with the air inlet end of the ozone generator, and the oxygen is introduced into the ozone generator₂A second pressure sensor, a second electromagnetic valve, a second flowmeter and a second one-way valve are sequentially arranged on the pipeline, and N is₂Input port through N₂The pipeline is connected with the air inlet end of the ozone generator, and N is₂A third pressure sensor, a third electromagnetic valve and a third electromagnetic valve are sequentially arranged on the pipelineThe ozone generator is connected with the outlet of the ozone generator through a third one-way valve, and the outlet of the ozone generator is connected with the inlet of the gas mixing tank. The position of the side plate protruding out of the front plate is provided with a handle, so that the shell can be conveniently placed, erected and moved. And a reinforcing block is arranged between the position of the side plate protruding out of the rear plate and the rear plate, so that the shell is reinforced. And a supporting seat is arranged at the position of the side plate protruding out of the bottom plate. And a shockproof pad is arranged at the bottom of the supporting seat. Front bezel, back plate, curb plate and bottom plate all are provided with soft glue film, avoid the user to bump, have increased the security. The shell is made of stainless steel. The control panel comprises a display screen, a control button and an indicator light, and the power interface is connected with a power line. The front plate, the rear plate, the side plates and the bottom plate are connected or clamped through screws, so that the shell is convenient to disassemble. And a nameplate is arranged on the front plate. The gas outlet is connected with an analyzer.

When the gas conversion device is used, NO gas is firstly introduced according to the regulation in GB 18352.6-2016, and the gas output by the NO gas cylinder is converted into the NO gas meeting the standard gas concentration. The specific implementation mode is that a gas cylinder is connected into the NO input port and the N of the utility model₂And inputting a port, and then setting the flow by changing the flow value. The pressure is adjusted to a set value by adjusting a two-stage pressure reducing valve of the gas cylinder. According to the standard, it is necessary to change the concentration of NO gas by mixing N into NO gas₂So that the NO concentration reaches about 80% of the NO standard gas value. In order to improve the accuracy of the test, a pressure sensor is added to indicate the current gas cylinder pressure. Then the ozone generator is turned on, NO gas is mixed with O with a certain concentration proportion₃. Because of O₃Reacts with NO to form NO₂At this time, the concentration of NO inevitably decreases. Regulating the oxygen supply to the ozone generator₂Will change the O generated by the ozone generator₃The concentration of (c). The concrete realization mode is that O is controlled₂The concentration is further adjusted to reach the regulation O₃The concentration is aimed at finally enabling the concentration of NO to reach 20% -10% of the standard meeting requirement. The utility model adopts the protocol communication with the serial port of the prior analyzer, and the analyzer can switch after receiving the requestChanging the operating state of the analyser to NO_XMode(s). And finally, cutting off an ozone power supply, and analyzing by an analyzer.

The electric connection relation of all the devices of the utility model can be realized by adopting the prior art, meanwhile, the analyzer is the prior device, and the utility model only leads the gas into the analyzer, so the analyzer is not described in detail herein.

The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A gas distributor for PEMS equipment, comprising: comprises a shell, a power supply interface, an NO input port, and an O₂Input port, N₂The ozone generator comprises a shell, a power supply interface, an NO input port, an O input port, a third pressure sensor, a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve, a first flowmeter, a second flowmeter, a third flowmeter, a first one-way valve, a second one-way valve, a third one-way valve, an ozone generator, a gas mixing tank, a gas outlet and a control panel, wherein the shell comprises a front plate, a rear plate, a side plate and a bottom plate, the power supply interface, the NO input port, the O input port, the third pressure sensor, the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve, the first flowmeter, the second flowmeter, the third flowmeter, the first one-way valve, the second one-way valve, the ozone generator, the gas mixing tank, the gas outlet and the control panel are arranged on the shell, the shell comprises a front plate, a rear plate, a side plate and a bottom plate, the power supply interface, the NO input port, the O input port, the second pressure sensor, the third electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve, the second flowmeter, the third electromagnetic valve, the second flowmeter, the third one-way valve, the second flowmeter, the third one-way valve, the second flowmeter, the third one-way valve, the gas mixing tank, the second flow meter, the flowmeter, the gas meter, the third one-way valve, the second flow meter, the second one-way valve, the second flow meter, the gas mixer, the second one-way valve, the third one-way valve, the second one-way valve, the₂Input port, N₂Input port, gas outlet, control panel set up on the front bezel of casing, first pressure sensor, second pressure sensor, third pressure sensor, first solenoid valve, second solenoid valve, third solenoid valve, first flowmeter, second flowmeter, third flowmeter, first check valve, second check valve, third check valve, ozone generator, gas mixing tank set up the inside of casing, the NO input port passes through the import of NO tube coupling gas mixing tank, first pressure sensor, first solenoid valve, first flowmeter, first check valve have set gradually on the NO tube, O₂The input port passes through O₂Air intake of pipeline connected ozone generatorEnd of said O₂A second pressure sensor, a second electromagnetic valve, a second flowmeter and a second one-way valve are sequentially arranged on the pipeline, and N is₂Input port through N₂The pipeline is connected with the air inlet end of the ozone generator, and N is₂The pipeline is sequentially provided with a third pressure sensor, a third electromagnetic valve, a third flowmeter and a third one-way valve, the air outlet end of the ozone generator is connected with the inlet of the air mixing tank, and the outlet of the air mixing tank is connected with the air outlet.

2. The gas distributor of claim 1, wherein: a handle is arranged at the position of the side plate protruding out of the front plate.

3. The gas distributor of claim 1, wherein: and a reinforcing block is arranged between the position of the side plate protruding out of the rear plate and the rear plate.

4. The gas distributor of claim 1, wherein: and a supporting seat is arranged at the position of the side plate protruding out of the bottom plate.

5. The gas distributor of claim 4, wherein: and a shockproof pad is arranged at the bottom of the supporting seat.

6. The gas distributor of claim 1, wherein: the front plate, the rear plate, the side plates and the bottom plate are all provided with soft glue layers.

7. The gas distributor of claim 1, wherein: the shell is made of stainless steel.

8. The gas distributor of claim 1, wherein: the control panel comprises a display screen, a control button and an indicator light, and the power interface is connected with a power line.

9. The gas distributor of claim 1, wherein: the front plate, the rear plate, the side plates and the bottom plate are connected or clamped through screws.

10. The gas distributor of claim 1, wherein: and a nameplate is arranged on the front plate.