Nitric oxide sensing device suitable for high temperature and high pressure
By designing a multi-layer structural shell in a high-temperature and high-pressure environment and using a zirconium diboride coating, the problem of reducing the accuracy of the nitric oxide sensing device in a high-temperature and high-pressure environment is solved, and the effect of improving the accuracy of the sensing device and extending the service life is achieved.
Patent Information
- Application Number
- CN202421658603.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-15
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-07-15
AI Technical Summary
In the industrial production process of coal-fired, petrochemical, oil refining and other industries, it is difficult to maintain accuracy in nitric oxide sensing devices in high-temperature and high-pressure environments, which may lead to problems such as low-range gases being unable to detect, reduce accuracy or even damage.
A nitric oxide sensing device suitable for high temperature and high pressure is designed, using a multi-layer structural shell and zirconium diboride coating to optimize the internal structure and reduce the overall size to reduce thermal and pressure resistance effects, and to protect the sensing device through thermal insulation coating.
Through the optimized design and the use of multi-layer structure, the accuracy and life of the sensing device are improved, the impact of high temperature and high pressure on the device is reduced, and the service life of the device is extended.
Smart Images
Figure CN222869194U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of environmental monitoring, in particular to a nitric oxide sensor device suitable for high temperature and high pressure. Background Art
[0002] In traditional industrial production processes such as coal burning, petrochemicals, and oil refining, the exhaust gas and chimney emissions generated by combustion contain a large amount of nitric oxide, which can easily lead to excessive emissions of nitric oxide, causing serious pollution problems to the surrounding environment and affecting human health.
[0003] Usually, the above scenarios will monitor the emission of nitric oxide by setting up sensors, but the above environment has the characteristics of high temperature and high pressure. If general sensors are used, the high temperature and high pressure environment may affect the accuracy of the sensors, resulting in the inability to detect low-range gases, reduced accuracy or even damage. Utility Model Content
[0004] The purpose of the present invention is to solve the above-mentioned problems, and the present invention adopts the following technical solutions.
[0005] A nitric oxide sensor device suitable for high temperature and high pressure comprises a shell, wherein a CPU board, an input-output board, a first fuse, a second fuse, a power switch, a terminal block, a nitric oxide sensor and a ground terminal are arranged in the shell, the input-output board is arranged close to the CPU board, the first fuse is arranged close to the input-output board, the second fuse is arranged close to the first fuse, the power switch is arranged close to the second fuse, the terminal block is arranged close to the power switch, the nitric oxide sensor is arranged close to the terminal block, and the ground terminal is arranged close to the terminal block; the terminal block is provided with a nitric oxide sensor input terminal, an analog output terminal, a heater power output terminal, a power supply input terminal, a calibration gas output terminal, an alarm terminal and a thermocouple input terminal; the shell is provided with a display operation panel, a range switching knob and a flow meter, the display operation panel is connected to the CPU board and the input-output board, and the range switching knob is arranged close to the flow meter; the shell is provided with a thermal insulation coating.
[0006] Furthermore, the shell is a multi-layer structure.
[0007] Furthermore, the shell also includes an inner convex strip, and the inner convex strip forms a rectangular space.
[0008] Furthermore, the shell is a hinge structure.
[0009] Furthermore, the CPU board is arranged on one side of the housing, and the input-output board is arranged on the other side corresponding to the CPU board.
[0010] Furthermore, the terminal row is arranged away from the input-output board.
[0011] Furthermore, the display operation panel is arranged on one side of the shell, and the range switching knob and the flow meter are arranged on the other side of the shell.
[0012] Furthermore, the thermal insulation coating is a zirconium diboride coating.
[0013] The positive effects of the nitric oxide sensor device suitable for high temperature and high pressure are:
[0014] The utility model can reduce thermal resistance and pressure resistance effects and improve the service accuracy and service life of the sensor device by optimizing the internal structure design of the sensor device and reducing the overall size; the shell adopts zirconium diboride coating, which has the properties of oxidation resistance, corrosion resistance, heat resistance and shock resistance, and effectively protects the sensor device and prolongs the service life; the shell adopts a multi-layer structure, which reduces the influence of high temperature and high pressure on the sensor device and can protect the sensor device. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram provided by an embodiment of the utility model.
[0016] The numbers in the figure are:
[0017] 1. Shell; 2. CPU board; 3. Input and output board; 4. First fuse; 5. Second fuse; 6. Power switch; 7. Terminal block; 8. Nitric oxide sensor; 9. Ground terminal; 10. Nitric oxide sensor input terminal; 11. Thermocouple input terminal; 12. Analog output terminal; 13. Heater power output terminal; 14. Power supply input terminal; 15. Calibration gas output terminal; 16. Alarm terminal; 17. Display operation panel; 18. Range switching knob; 19. Flow meter. DETAILED DESCRIPTION
[0018] The following is a specific implementation of the nitric oxide sensor device suitable for high temperature and high pressure of the utility model in conjunction with the accompanying drawings, but it should be pointed out that the specific implementation is not used to limit the specific implementation of the utility model. All similar structures and similar variations of the utility model should be included in the protection scope of the utility model. The description of the following embodiments is with reference to the attached drawings to illustrate specific embodiments in which the utility model can be implemented. The directional terms mentioned in the embodiments, such as "up", "down", "front", "back", "left", "right", "top", "bottom", etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are used to illustrate and understand the utility model, rather than to limit the utility model.
[0019] See also Figure 1 A nitric oxide sensor device suitable for high temperature and high pressure includes a housing 1, wherein a CPU board 2, an input-output board 3, a first fuse 4, a second fuse 5, a power switch 6, a terminal block 7, a nitric oxide sensor 8 and a ground terminal 9 are arranged in the housing 1, wherein the input-output board 3 is arranged close to the CPU board 2, the first fuse 4 is arranged close to the input-output board 3, the second fuse 5 is arranged close to the first fuse 4, the power switch 6 is arranged close to the second fuse 5, the terminal block 7 is arranged close to the power switch 6, and the nitric oxide sensor 8 is arranged close to the terminal block 7. The grounding terminal 9 is arranged near the terminal row 7; the terminal row 7 is provided with a nitric oxide sensor input terminal 10, an analog output terminal 12, a heater power output terminal 13, a power supply input terminal 14, a calibration gas output terminal 15, an alarm terminal 16 and a thermocouple input terminal 11; the shell 1 is provided with a display operation panel 17, a range switching knob 18 and a flow meter 19, the display operation panel 17 is connected to the CPU board 2 and the input and output board 3, and the range switching knob 18 is arranged near the flow meter 19; the shell 1 is provided with a thermal insulation coating.
[0020] The CPU board 2 is connected to the display operation panel 17, and a memory circuit is provided in the CPU board 2. The input and output board 3 is installed with input and output loops and power supply circuits, the terminal row 7 is used for the collection of various input and output signal terminals, and the power switch 6 is used to turn the power on and off. The first fuse 4 is used for the tube fuse of the heater, and the second fuse 5 is used for the tube fuse of the sensor device itself. The range switching knob 18 is used to switch from zero to full scale. The flow meter 19 can be used to adjust other flow rates from zero to full scale. The display operation panel 17 includes a display screen and buttons for displaying and setting various data. The nitric oxide sensor input terminal 10 is used to transmit the data of the nitric oxide sensor 8 to the CPU board 2, and the analog output terminal 12 analog output is DC4-20mA or DC0-1V. The heater is a supporting equipment for the nitric oxide sensor 8, which is used to heat the flue gas during flue gas collection.
[0021] The housing 1 is a multilayer structure, and the housing 1 also includes an inner convex strip, which forms a rectangular space, and other components of the sensor device are arranged in the rectangular space formed by the inner convex strip. The housing 1 is a hinge structure, and the CPU board 2 is arranged on one side of the housing 1, that is, the CPU board 2 is arranged on the left side of the housing 1; the input and output board 3 is arranged on the other side corresponding to the CPU board 2, that is, the input and output board 3 is arranged on the right side of the housing 1, and a cable is arranged between the CPU board 2 and the input and output board 3. The terminal row 7 is arranged away from the input and output board 3, and the terminal row 7 is arranged at the lower right side of the housing 1. The power switch 6 is arranged at the outer position of the middle of the right side of the housing 1. The nitric oxide sensor 8 is arranged at the lower right side of the housing 1. The display operation panel 17 is arranged on one side of the housing 1, that is, the display operation panel 17 is arranged at the upper right side of the housing 1. The range switching knob 18 and the flow meter 19 are arranged on the other side of the housing 1, that is, on the right side of the housing 1. The thermal insulation coating is a zirconium diboride coating.
[0022] The utility model can reduce thermal resistance and pressure resistance effects and improve the service accuracy and service life of the sensor device by optimizing the internal structure of the sensor device and reducing the overall size; the shell 1 adopts a zirconium diboride coating, which has the properties of anti-oxidation, anti-corrosion, and heat and shock resistance, and effectively protects the sensor device and prolongs the service life; the shell 1 adopts a multi-layer structure, which reduces the influence of high temperature and high pressure on the sensor device and can protect the sensor device.
Claims
1. A nitric oxide sensor device suitable for high temperature and high pressure, characterized in that: The invention comprises a shell, in which a CPU board, an input-output board, a first fuse, a second fuse, a power switch, a terminal block, a nitric oxide sensor and a ground terminal are arranged, the input-output board is arranged close to the CPU board, the first fuse is arranged close to the input-output board, the second fuse is arranged close to the first fuse, the power switch is arranged close to the second fuse, the terminal block is arranged close to the power switch, the nitric oxide sensor is arranged close to the terminal block, and the ground terminal is arranged close to the terminal block; the terminal block is provided with a nitric oxide sensor input terminal, an analog output terminal, a heater power output terminal, a power supply input terminal, a calibration gas output terminal, an alarm terminal and a thermocouple input terminal; the shell is provided with a display operation panel, a range switching knob and a flow meter, the display operation panel is connected to the CPU board and the input-output board, and the range switching knob is arranged close to the flow meter; the shell is provided with a thermal insulation coating.
2. The nitric oxide sensor device suitable for high temperature and high pressure according to claim 1, characterized in that: The shell is in a multi-layer structure.
3. The nitric oxide sensor device suitable for high temperature and high pressure according to claim 2, characterized in that: The shell also includes an inner convex strip, and the inner convex strip forms a rectangular space.
4. The nitric oxide sensor device suitable for high temperature and high pressure according to claim 3, characterized in that: The shell is a hinge structure.
5. The nitric oxide sensor device suitable for high temperature and high pressure according to claim 4, characterized in that: The CPU board is arranged on one side of the housing, and the input-output board is arranged on the other side corresponding to the CPU board.
6. The nitric oxide sensor device suitable for high temperature and high pressure according to claim 5, characterized in that: The terminal row is arranged away from the input-output board.
7. The nitric oxide sensor device suitable for high temperature and high pressure according to claim 1, characterized in that: The display operation panel is arranged on one side of the housing, and the range switching knob and the flow meter are arranged on the other side of the housing.
8. The nitric oxide sensor device suitable for high temperature and high pressure according to claim 1, characterized in that: The thermal insulation coating is a zirconium diboride coating.