Urea box sensor assembly
A sensor assembly, urea tank technology, applied in the direction of engine components, heat exchanger shells, machines/engines, etc., can solve the problems of liquid level sensors not working properly, easy to move, etc.
Active Publication Date: 2021-10-22
TYCO ELECTRONICS (SHANGHAI) CO LTD
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Problems solved by technology
[0004] In the prior art, the spiral heating pipe of the spiral cooling liquid pipe is not fixed, so it is easy to move under the influence of vibration, which may interfere with the free movement of the float of the liquid level sensor, thereby causing the liquid level sensor Can not work normally
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[0022] The technical solutions of the present invention will be further specifically described below through the embodiments and in conjunction with the accompanying drawings. In the specification, the same or similar reference numerals designate the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the general inventive concept of the present invention, but should not be construed as a limitation of the present invention.
[0023] In addition, in the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a comprehensive understanding of the embodiments of the present disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in diagrammatic form to simplify the drawings.
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The invention discloses a urea box sensor assembly. The urea box sensor assembly comprises a spiral cooling liquid pipe, a urea pipe, a liquid level sensor and a main clamp. The spiral cooling liquid pipe comprises a spiral heating pipe and a straight pipe, wherein the straight pipe is located in a space surrounded by the spiral heating pipe and communicates with the lower end of the spiral heating pipe. The urea pipe is located in the space surrounded by the spiral heating pipe and is arranged on one side of the straight pipe side by side. The liquid level sensor comprises a guide pipe located in the space surrounded by the spiral heating pipe and a floater installed on the guide pipe in a sleeving mode. The main clamp is used for clamping the straight pipe and the urea pipe together. The urea box sensor assembly further comprises a first side clamp and a second side clamp. The first side clamp is clamped on the spiral heating pipe and fixed to one side of the main clamp, and the second side clamp is clamped on the spiral heating pipe and fixed to the other side of the main clamp. According to the urea box sensor assembly, due to the fact that the spiral heating pipe is fixed to the straight pipe, movement of the spiral heating pipe can be limited, and the spiral heating pipe can be effectively prevented from interfering with free movement of the floater of the liquid level sensor.
Description
technical field [0001] The invention relates to a urea tank sensor assembly. Background technique [0002] In the prior art, in order to reduce the pollution of automobile exhaust to the atmosphere, it is necessary to spray urea aqueous solution into the automobile exhaust, and the urea aqueous solution reacts with the nitrogen oxides in the automobile exhaust to generate pollution-free nitrogen and water. [0003] In the prior art, the urea tank generally includes a tank for storing aqueous urea solution and a sensor assembly accommodated in the tank. The sensor assembly may be integrated with a heating tube, a liquid level sensor, a temperature sensor and a urea quality sensor. At low temperature, urea is easy to crystallize, so it is necessary to heat the urea in the urea tank through a heating pipe (coolant pipe) to prevent urea from crystallizing and blocking the urea pipe. [0004] In the prior art, the spiral heating pipe of the spiral cooling liquid pipe is not fixe...
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IPC IPC(8): F01N3/20F01N13/18F28F9/26
CPCF01N3/206F01N3/2066F01N13/1855F28F9/26F01N2240/02F01N2450/24F01N2610/10F01N2610/02F01N2610/1486Y02T10/12
Inventor 宋帅军孙鹏程黄鹤
Owner TYCO ELECTRONICS (SHANGHAI) CO LTD