Urea nozzle for temperature conduction

Abstract

The utility model belongs to the technical field of urea nozzles, and is particularly a urea nozzle for temperature conduction, comprising a shell and a lower bottom shell fixedly installed below the shell, a spray nozzle fixedly installed at the bottom of the lower bottom shell, a spray solenoid valve fixedly installed inside the lower bottom shell, a detection sensor fixedly installed inside the lower bottom shell, a copper shell installed around the detection sensor, and a heater fixedly installed inside the lower bottom shell. The utility model can improve the heat transfer efficiency of the urea nozzle for temperature conduction through the installed copper shell, the detection sensor detects the temperature and pressure of the urea solution, and when the temperature and pressure reach the predetermined value, the copper shell facilitates the rapid transfer of heat. Compared with the traditional urea nozzle, the utility model adopts the copper shell to encapsulate the detection sensor, which greatly improves the temperature response time, which is tested to be 6ms, effectively improves the transmission of the product temperature signal, and improves the practicality of the temperature-conducting urea nozzle.

Description

Technical Field

[0001] The utility model relates to the technical field of urea nozzles, in particular to a urea nozzle for temperature conduction. Background Art

[0002] The main function of the urea nozzle is to accurately spray urea solution into the exhaust pipe of the car. Through this process, the nitrogen oxides (NOx) in the exhaust pipe will undergo a series of reduction reactions and be converted into nitrogen and water vapor that will not pollute the environment. In order to achieve this goal, the injection of the urea nozzle is precisely controlled to ensure that the urea solution and the exhaust gas are fully mixed, thereby meeting the environmental protection standards for diesel vehicle exhaust emissions.

[0003] The urea nozzle detection sensors currently on the market have certain deficiencies in temperature conduction. These sensors are generally packaged in plastic shells. Although the cost is low, the performance in heat conduction is poor, which makes the sensor's response time as long as 20 milliseconds. As a result, the product has a long response time when collecting temperature signals and cannot meet the application requirements of high precision and fast response. For this reason, a urea nozzle for temperature conduction is developed. Utility Model Content

[0004] The utility model aims to provide a urea nozzle for temperature conduction, so as to solve the technical problem of unsatisfactory heat conduction efficiency proposed in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a urea nozzle for temperature conduction, comprising an outer shell and a lower bottom shell fixedly installed below the outer shell, an injection nozzle is fixedly installed at the bottom of the lower bottom shell, an injection solenoid valve is fixedly installed inside the lower bottom shell, and the injection solenoid valve is connected to the injection nozzle, a detection sensor is fixedly installed inside the lower bottom shell, a copper shell is installed around the detection sensor, a heater is fixedly installed inside the lower bottom shell, and a connector is fixedly installed on the outer shell.

[0006] Furthermore, the shell is made of plastic.

[0007] Furthermore, the lower base shell is made of stainless steel.

[0008] Furthermore, the outer shell and the lower bottom shell are combined to form a sealed space inside.

[0009] Furthermore, a liquid inlet is provided on the top of the shell.

[0010] Furthermore, an annular groove is provided inside the connector, and a rubber sealing ring is fixedly installed inside the annular groove.

[0011] Furthermore, the copper shell is packaged with brass material, which improves the temperature response time test, and the detection sensor includes a pressure sensor and a temperature sensor.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model can improve the heat transfer efficiency of the urea nozzle used for temperature conduction by installing a copper shell. The detection sensor detects the temperature and pressure of the urea solution. When the temperature and pressure reach a predetermined value, the injection solenoid valve is controlled to work, and the urea injection amount is accurately controlled by the injection solenoid valve to enter the exhaust pipe, and the urea solution is sprayed into the exhaust gas of the vehicle, so that the nitrogen oxides in the exhaust gas are converted into harmless nitrogen and water vapor through a reduction reaction. The copper shell facilitates rapid heat transfer. Compared with the traditional urea nozzle, the utility model adopts a copper shell to encapsulate the detection sensor, which greatly improves the temperature response time, which is tested to be 6ms, effectively improves the transmission of the product temperature signal, and improves the practicality of the temperature-conducting urea nozzle;

[0014] 2. The utility model can improve the sealing performance of the connection of the urea nozzle connector for temperature conduction by installing a rubber sealing ring. When the external wire plug is connected to the urea nozzle for temperature conduction through the connector, after the plug enters the interior of the connector, the rubber sealing ring's own characteristic reset will seal the gap between the plug and the connector, thereby improving the sealing performance, effectively preventing external impurities and water vapor from entering the interior of the connector, and increasing the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the injection nozzle structure of the utility model.

[0018] In the figure: 1. outer shell; 2. lower shell; 3. injection nozzle; 4. connector; 5. injection solenoid valve; 6. detection sensor; 7. copper outer shell; 8. heater; 9. annular groove; 10. rubber sealing ring; 11. liquid inlet. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1 , Figure 2 and Figure 3 A urea nozzle for temperature conduction includes a shell 1 and a lower shell 2 fixedly installed below the shell 1, an injection nozzle 3 is fixedly installed at the bottom of the lower shell 2, an injection solenoid valve 5 is fixedly installed inside the lower shell 2, and the injection solenoid valve 5 is connected with the injection nozzle 3, a detection sensor 6 is fixedly installed inside the lower shell 2, a copper shell 7 is installed around the detection sensor 6, a heater 8 is fixedly installed inside the lower shell 2, and a connector 4 is fixedly installed on the shell 1. When the urea nozzle for temperature conduction is used, it is installed at the exhaust pipe of the vehicle so that the injection nozzle 3 extends to the inside of the exhaust pipe. After the urea solution enters the inside of the shell 1, the heater 8 generates heat to enter the urea solution. The heating temperature of the urea solution will increase, and pressure will be generated at the same time. The detection sensor 6 quickly transfers heat through the copper shell 7, and the heat When a certain temperature is reached, after detection by the detection sensor 6, an electrical signal will be generated, which will control the operation of the injection solenoid valve 5. The injection solenoid valve 5 accurately controls the urea injection amount to enter the exhaust pipe, and sprays the urea solution into the exhaust gas of the vehicle, so that the nitrogen oxides (NOx) in the exhaust gas are converted into harmless nitrogen and water vapor through a reduction reaction, so as to ensure that the sprayed urea solution can be fully mixed with the exhaust gas, and the environmental protection requirements of diesel vehicle exhaust emissions are achieved. The copper shell 7 is used to facilitate rapid heat transfer. Compared with the traditional urea nozzle, the detection sensor 6 inside the traditional urea nozzle is packaged in a plastic shell, and the heat conduction response time requires 20ms, resulting in a long product temperature signal acquisition response time. The utility model uses a copper shell 7 to package the detection sensor 6, which greatly improves the temperature response time, and the test is 6ms, which effectively improves the transmission of the product temperature signal.

[0021] See also Figure 1 The outer shell 1 is made of plastic, the lower shell 2 is made of stainless steel, the outer shell 1 is polytetrafluoroethylene, and the stainless steel material is 304 stainless steel.

[0022] See also Figure 1 The outer shell 1 and the lower bottom shell 2 are combined to form a sealed space inside, and the outer shell 1 and the lower bottom shell 2 are combined to form a sealed space to provide storage space for urea solution.

[0023] See also Figure 1A liquid inlet 11 is provided on the top of the housing 1, through which the urea solution can enter the interior of the urea nozzle for temperature conduction.

[0024] See also Figure 1 and Figure 3 An annular groove 9 is provided inside the connector 4, and a rubber sealing ring 10 is fixedly installed inside the annular groove 9. When the external wire plug is connected to the urea nozzle for temperature conduction through the connector 4, after the plug enters the interior of the connector 4, the rubber sealing ring 10 resets its own characteristics to seal the gap between the plug and the connector 4, thereby improving the sealing performance, effectively preventing external impurities and water vapor from entering the interior of the connector 4, and improving the service life.

[0025] See also Figure 2 The copper shell 7 is packaged with brass material, which improves the temperature response time test. The detection sensor 6 includes a pressure sensor and a temperature sensor. The detection sensor 6 can detect the temperature and pressure of the urea solution between the shell 1 and the lower bottom shell 2 through the pressure sensor and the temperature sensor. When the temperature and pressure reach the predetermined value, the generated electrical signal will be stuck in the injection solenoid valve 5 to work and accurately inject the urea solution.

[0026] Working principle: first, when using the urea nozzle for temperature conduction, install it at the vehicle exhaust pipe so that the injection nozzle 3 extends to the inside of the exhaust pipe. When the external wire plug is connected to the urea nozzle for temperature conduction through the connector 4, after the plug enters the inside of the connector 4, the rubber sealing ring 10 resets its own characteristics to seal the gap between the plug and the connector 4, thereby improving the sealing performance, effectively preventing external impurities and water vapor from entering the inside of the connector 4, and improving the service life. After the urea solution enters the inside of the shell 1, the heater 8 generates heat to enter the urea solution. The heating temperature of the urea solution will increase, and pressure will be generated at the same time. The detection sensor 6 quickly transfers heat through the copper shell 7. When the heat reaches a certain temperature, the detection sensor 6 detects the temperature of the urea solution through the pressure sensor and the temperature sensor. And pressure are detected. When the temperature and pressure reach the predetermined value, an electrical signal will be generated to control the operation of the injection solenoid valve 5. The injection solenoid valve 5 accurately controls the urea injection amount to enter the exhaust pipe, and sprays the urea solution into the exhaust gas of the vehicle, so that the nitrogen oxides (NOx) in the exhaust gas are converted into harmless nitrogen and water vapor through a reduction reaction, so as to ensure that the sprayed urea solution can be fully mixed with the exhaust gas, and the environmental protection requirements of diesel vehicle exhaust emissions are achieved. The copper shell 7 is used to facilitate rapid heat transfer. Compared with the traditional urea nozzle, the detection sensor 6 inside the traditional urea nozzle is packaged in a plastic shell, and the heat conduction response time requires 20ms, resulting in a long product temperature signal acquisition response time. The utility model uses a copper shell 7 to package the detection sensor 6, which greatly improves the temperature response time. The test is 6ms, which effectively improves the transmission of the product temperature signal.

[0027] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A urea nozzle for temperature conduction, comprising a housing (1) and a lower housing (2) fixedly mounted below the housing (1), characterized in that: The bottom of the lower shell (2) is fixedly mounted with an injection nozzle (3); the interior of the lower shell (2) is fixedly mounted with an injection solenoid valve (5), and the injection solenoid valve (5) is in communication with the injection nozzle (3); the interior of the lower shell (2) is fixedly mounted with a detection sensor (6), and a copper shell (7) is mounted around the detection sensor (6); the interior of the lower shell (2) is fixedly mounted with a heater (8), and the shell (1) is fixedly mounted with a connector (4).

2. A urea nozzle for temperature conduction according to claim 1, characterized in that: The shell (1) is made of plastic.

3. The urea nozzle for temperature conduction according to claim 1, characterized in that: The lower base shell (2) is made of stainless steel.

4. The urea nozzle for temperature conduction according to claim 1, characterized in that: The outer shell (1) and the lower bottom shell (2) are combined to form a sealed space inside.

5. The urea nozzle for temperature conduction according to claim 1, characterized in that: The top of the housing (1) is provided with a liquid inlet (11).

6. The urea nozzle for temperature conduction according to claim 1, characterized in that: An annular groove (9) is provided inside the connecting head (4), and a rubber sealing ring (10) is fixedly installed inside the annular groove (9).

7. The urea nozzle for temperature conduction according to claim 1, characterized in that: The copper housing (7) is encapsulated by a brass material, which improves the temperature response time test. The detection sensor (6) includes a pressure sensor and a temperature sensor.

Images