CN218272200U

CN218272200U - NOX sensor detection device

Info

Publication number: CN218272200U
Application number: CN202222095322.1U
Authority: CN
Inventors: 马晨
Original assignee: Beijing Cepck Measurement & Control Co ltd
Current assignee: Beijing Cepck Measurement & Control Co ltd
Priority date: 2022-08-10
Filing date: 2022-08-10
Publication date: 2023-01-10
Anticipated expiration: 2032-08-10

Abstract

The utility model discloses a NOX sensor detection device relates to the nitrogen oxygen sensor and detects technical field. The utility model relates to a NOX sensor detection device, including a jar body and NOX sensor, the top of jar body is provided with and is used for detecting fixed mounting structure to the NOX sensor. The utility model discloses through the air of zero gas with jar internal portion discharges to jar external portion of body through evacuation mechanism, avoid air disturbance testing result when detecting NOX sensor, NOX gas of standard is added to the inside of jar body through air inlet mechanism, in the gaseous entering of NOX, reach the temperature of settlement through controller control heating jacket, make simulation tail gas get into, numerical value that detects out to each group NOX sensor through the controller monitors, numerical value and standard NOX gas numerical value that detect through NOX sensor contrast, realize judging NOX sensor's accuracy nature, and then realize detecting multiunit NOX sensor under one-time operation through multiunit mounting structure.

Description

NOX sensor detection device

Technical Field

The utility model relates to a nitrogen oxygen sensor detects technical field, concretely relates to NOX sensor detection device.

Background

The pollution of an engine to the environment mainly comes from exhaust products, the most important exhaust pollutants of a diesel engine are particulates and NOx, the requirement of the diesel engine on the emission of nitrogen oxides is increasingly strict with the continuous development of the automobile industry, and the measurement performance of an NOx sensor serving as a device for measuring the actual emission NOx concentration of a vehicle is related to the accuracy of emission monitoring, but the detection accuracy of the NOx sensor is reduced along with the increase of the service cycle, so that the emission of the NOx is not in accordance with the regulations, the oil consumption of the diesel engine and the urea injection are deteriorated, and the user cost is increased.

In order to solve the problem, the measurement accuracy of the NOx sensor needs to be detected during production, and the detection needs to be performed regularly during the service cycle, but the existing detection equipment can only detect a single NOx sensor, so that the detection of the NOx sensor is troublesome, much time is needed, and the existing detection of the NOx sensor is easily disturbed by air to cause inaccurate detection data.

To this end, an NOX sensor detection device is proposed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: for solving the current problem that detects more troublesome and receive air disturbance influence accuracy nature to NOX sensor, the utility model provides a NOX sensor detection device.

The utility model discloses a realize above-mentioned purpose and specifically adopt following technical scheme:

the utility model provides a NOX sensor detection device, includes a jar body and NOX sensor, the top of the jar body is provided with and is used for detecting fixed mounting structure to the NOX sensor, the left end of the jar body is provided with and is used for the mechanism of admitting air that fills into gas to the inside of the jar body, the preceding lateral wall of the jar body is provided with the controller, the right-hand member of the jar body is provided with the evacuation mechanism that is used for carrying out the exhaust to jar internal portion, the surface of the mechanism of admitting air is provided with the heating jacket, the controller is the electric connection setting with the heating jacket.

Further, mounting structure includes the joint, the surface mosaic that connects has solenoid electric valve, the surperficial screw thread cover that connects is equipped with fixation nut, the NOX sensor is pegged graft and is installed to the inside that connects, and NOX sensor and joint pass through fixation nut fixed mounting and set up, solenoid electric valve is the electric connection setting with the controller.

Furtherly, air inlet mechanism includes the intake pipe, jar body left end is provided with the intake pipe, the one end of intake pipe is provided with zero gas connector, the surface that the intake pipe is close to zero gas connector's one end is inlayed and is installed first valve, the other end of intake pipe is provided with standard gas connector, the surface that the intake pipe is close to standard gas connector's one end is inlayed and is installed the second valve.

Further, evacuation mechanism is including being responsible for, the right-hand member of the jar body is provided with the person in charge, the surface mosaic who is responsible for installs the manometer, the surface mosaic who is responsible for installs the third valve, the bottom of being responsible for is provided with the branch pipe, the vacuum pump is installed to the free end of branch pipe mosaic.

Further, the jar body is fixed mounting setting through mounting structure and NOX sensor, and mounting structure's quantity has the multiunit, is the equidistance setting.

Further, the intake pipe is Y shape structure setting, and the intake pipe is close to a terminal surface cover of the jar body and is equipped with the heating jacket.

The beneficial effects of the utility model are as follows:

1. the utility model discloses an air inlet mechanism adds zero gas to the inside of the jar body, through zero gas with the air of jar internal portion discharge to the outside of the jar body through evacuation mechanism, avoid detecting the air disturbance testing result when NOX sensor, NOX gas of standard is added to the inside of the jar body through air inlet mechanism, when NOX gas gets into, reach the temperature of settlement through controller control heating jacket, make simulation tail gas get into, the numerical value that detects out to each group NOX sensor through the controller monitors, the numerical value that detects through NOX sensor contrasts with standard NOX gas numerical value, realize judging NOX sensor's accuracy nature, and then realize detecting multiunit NOX sensor under one operation through multiunit mounting structure.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a schematic view of a front view of the present invention;

fig. 3 is a schematic view of a front cross-sectional view of the present invention;

reference numerals: 1. a tank body; 2. a mounting structure; 201. a joint; 202. an electromagnetic control valve; 203. fixing a nut; 3. a NOX sensor; 4. an air intake mechanism; 401. an air inlet pipe; 402. a zero gas joint; 403. a first valve; 404. a standard gas joint; 405. a second valve; 5. a controller; 6. an evacuation mechanism; 601. a main pipe; 602. a pressure gauge; 603. a third valve; 604. a branch pipe; 605. a vacuum pump; 7. and (4) heating the sleeve.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying 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. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should be noted that the directions or positional relationships indicated by the terms "inside", "outside", "upper", and the like are based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the utility model is conventionally placed when in use, and are only for convenience of describing the utility model and simplifying the description, but not for indicating or implying that the device or element indicated must have a specific direction, be constructed and operated in a specific direction, and therefore, should not be construed as limiting the present invention.

As shown in fig. 1 to 3, a NOX sensor detection device includes a tank 1 and a NOX sensor 3, a mounting structure 2 for detecting and fixing the NOX sensor 3 is disposed at the top of the tank 1, an air intake mechanism 4 for introducing air into the tank 1 is disposed at the left end of the tank 1, a controller 5 is disposed on the front side wall of the tank 1, an evacuation mechanism 6 for evacuating air from the tank 1 is disposed at the right end of the tank 1, a heating jacket 7 is disposed on the surface of the air intake mechanism 4, and the controller 5 and the heating jacket 7 are electrically connected; specifically, through the top of the installation structure 2 with NOX sensor 3 fixed mounting at jar body 1, be connected NOX sensor 3's data transmission end and controller 5, through mechanism 4 that admits air to the inside of jar body 1, through the inside air of zero gas with jar body 1 inside through evacuation mechanism 6 discharge to the outside of jar body 1, avoid air disturbance testing result when detecting NOX sensor 3, through mechanism 4 that admits air to the inside of jar body 1 add standard NOX gas, when NOX gas gets into, through controller 5 control heating jacket 7 arrival set temperature, make the simulation tail gas get into, numerical value that detects out each group NOX sensor 3 through controller 5 monitors, more specifically, the numerical value that detects through NOX sensor 3 compares with standard NOX gas numerical value, can judge NOX sensor 3's accuracy nature.

As shown in fig. 3, the mounting structure 2 includes a connector 201, an electromagnetic control valve 202 is mounted on the surface of the connector 201 in an embedded manner, a fixing nut 203 is screwed on the surface of the connector 201, the NOX sensor 3 is inserted into the connector 201, the NOX sensor 3 and the connector 201 are fixedly mounted through the fixing nut 203, and the electromagnetic control valve 202 is electrically connected with the controller 5; specifically, during installation, the NOX sensor 3 is inserted into the joint 201, the NOX sensor 3 is fixed by the fixing nut 203, and during detection, the electromagnetic control valve 202 corresponding to the NOX sensor 3 is controlled by the controller 5 to be opened, so that the NOX sensor 3 can contact with the gas inside the tank 1.

As shown in fig. 1 and fig. 2, the air inlet mechanism 4 includes an air inlet pipe 401, an air inlet pipe 401 is arranged at the left end of the tank body 1, one end of the air inlet pipe 401 is provided with a zero air joint 402, a first valve 403 is embedded and mounted on the surface of one end of the air inlet pipe 401 close to the zero air joint 402, the other end of the air inlet pipe 401 is provided with a standard air joint 404, and a second valve 405 is embedded and mounted on the surface of one end of the air inlet pipe 401 close to the standard air joint 404; specifically, during detection, the zero gas connector 402 is connected with a zero gas pipeline, the standard gas connector 404 is connected with a standard NOX gas pipeline, the first valve 403 is opened to close the second valve 405, so that zero gas enters the tank body 1 through the gas inlet pipe 401, air in the tank body 1 is discharged, and the first valve 403 is closed to open the second valve 405, so that standard NOX gas enters the tank body 1.

As shown in fig. 1 and 2, the evacuation mechanism 6 includes a main pipe 601, a main pipe 601 is arranged at the right end of the tank 1, a pressure gauge 602 is mounted on the surface of the main pipe 601 in an embedded manner, a third valve 603 is mounted on the surface of the main pipe 601 in an embedded manner, a branch pipe 604 is arranged at the bottom end of the main pipe 601, and a vacuum pump 605 is mounted at the free end of the branch pipe 604 in an embedded manner; specifically, during the evacuation, open third valve 603, enter into the inside of jar body 1 through zero gas for the air is discharged through being responsible for 601, is convenient for observe the gas pressure of the internal portion of jar body 1 through manometer 602, and after the detection, accelerate through vacuum pump 605 and discharge the internal portion gas of jar body 1, improve detection efficiency.

As shown in fig. 1, 2 and 3, the tank 1 is fixedly installed with the NOX sensor 3 through the installation structures 2, and the installation structures 2 are provided in a plurality of groups and arranged at equal intervals; specifically, the detection of multiple groups of NOX sensors 3 in one operation is realized by multiple groups of mounting structures 2.

As shown in fig. 2 and 3, the air inlet pipe 401 is arranged in a Y-shaped structure, and a heating sleeve 7 is sleeved on the surface of one end of the air inlet pipe 401 close to the tank body 1; specifically, the heating of the gas entering the tank body 1 through the gas inlet pipe 401 is realized through the heating sleeve 7, so that the simulated exhaust emission is realized.

Claims

1. The utility model provides a NOX sensor detection device, its characterized in that, includes a jar body (1) and NOX sensor (3), the top of the jar body (1) is provided with and is used for detecting fixed mounting structure (2) to NOX sensor (3), the left end of the jar body (1) is provided with and is used for the inside mechanism of admitting air (4) that admits air to the jar body (1), the preceding lateral wall of the jar body (1) is provided with controller (5), the right-hand member of the jar body (1) is provided with and is used for carrying out evacuation mechanism (6) of evacuating air to the jar body (1) inside, the surface of mechanism of admitting air (4) is provided with heating jacket (7), controller (5) are electric connection with heating jacket (7) and set up.

2. The NOx sensor detecting device according to claim 1, wherein the mounting structure (2) comprises a joint (201), an electromagnetic control valve (202) is mounted on the surface of the joint (201) in a mosaic mode, a fixing nut (203) is sleeved on the surface of the joint (201) in a threaded mode, the NOx sensor (3) is mounted inside the joint (201) in a plug-in mode, the NOx sensor (3) and the joint (201) are fixedly mounted through the fixing nut (203), and the electromagnetic control valve (202) is electrically connected with the controller (5).

3. The NOx sensor detecting device according to claim 1, characterized in that the air inlet mechanism (4) comprises an air inlet pipe (401), the left end of the tank body (1) is provided with the air inlet pipe (401), one end of the air inlet pipe (401) is provided with a zero air joint (402), a first valve (403) is mounted on the surface of one end, close to the zero air joint (402), of the air inlet pipe (401) in an embedded mode, a standard air joint (404) is arranged at the other end of the air inlet pipe (401), and a second valve (405) is mounted on the surface of one end, close to the standard air joint (404), of the air inlet pipe (401) in an embedded mode.

4. The NOx sensor detecting device according to claim 1, wherein the emptying mechanism (6) comprises a main pipe (601), a main pipe (601) is arranged at the right end of the tank body (1), a pressure gauge (602) is embedded in the surface of the main pipe (601), a third valve (603) is embedded in the surface of the main pipe (601), a branch pipe (604) is arranged at the bottom end of the main pipe (601), and a vacuum pump (605) is embedded in the free end of the branch pipe (604).

5. The NOx sensor detecting device of claim 1, wherein the tank body (1) is fixedly installed with the NOx sensor (3) through the installation structures (2), and the installation structures (2) are arranged in a plurality of groups at equal intervals.

6. The NOx sensor detecting device according to claim 3, characterized in that the air inlet pipe (401) is arranged in a Y-shaped structure, and a heating sleeve (7) is sleeved on one end surface of the air inlet pipe (401) close to the tank body (1).