A performance tester for motor vehicle brake fluid

Abstract

The utility model relates to a kind of motor vehicle brake fluid performance tester, comprising: box, control device and boiling point tester;Box is equipped with mounting through-hole, and mounting through-hole is equipped with mounting bracket;Control device includes controller and touch display screen, and touch display screen is set on the outer lateral wall of box;Boiling point tester includes heater, short neck flask, condenser, temperature sensor, optical fiber detection component and support frame, heater is set in the box just below mounting bracket and is connected with controller, short neck flask is fixed on mounting bracket, short neck flask is equipped with condensing port and temperature measuring port, condenser is set in condensing port, temperature sensor is set in temperature measuring port, optical fiber detection component is fixed in short neck flask rear, support frame is fixed on the upper end surface of box, and is adjacently set with condenser.The utility model has the characteristics of simple operation, accurate data etc., can multistage control heating power, freely switch in two detection modes, meet different detection needs.

Description

Technical Field

[0001] This utility model relates to the field of testing device technology, and in particular to a motor vehicle brake fluid performance tester. Background Technology

[0002] The motor vehicle brake hydraulic system is a critical safety device for motor vehicles. Because the braking system operates at high temperatures, especially when a motor vehicle brakes at high speed, a large amount of frictional heat is generated. Motor vehicle brake fluid often needs to be used at high temperatures for a long time. Therefore, motor vehicle brake fluid must have good high-temperature stability and a high boiling point.

[0003] Currently, there are very few instruments available for testing the equilibrium reflux boiling point and stability of automotive brake fluid. Most instruments use existing two-necked flask equilibrium reflux boiling point testers, which include a condenser, thermometer, zeolite, electric heating furnace, transformer, etc. This instrument lacks an automatic temperature control device and cannot maintain a constant heating rate and temperature. Operators need to constantly adjust the transformer to regulate the heating power and maintain a stable temperature, which is inconvenient to operate and has low temperature control accuracy. This is both labor-intensive and affects the accuracy of the experiment. There is currently no fully automatic testing instrument specifically designed for testing the equilibrium reflux boiling point and stability of brake fluid, which makes it difficult to meet the needs for accurate and efficient testing. Utility Model Content

[0004] Therefore, it is necessary to provide a motor vehicle brake fluid performance tester to solve the problems of manual adjustment of heating power, inconvenient operation and inaccurate temperature control in the current testing of the equilibrium reflux boiling point and stability of motor vehicle brake fluid. The tester can automatically adjust the temperature by controlling the controller and set two test programs, equilibrium reflux boiling point and liquid stability, to achieve automatic temperature heating control, multi-level temperature regulation, automatic detection of reflux rate, and reduce human operation error.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A motor vehicle brake fluid performance tester, comprising: a housing, a control device, and a boiling point tester;

[0006] The housing has mounting through holes, and mounting brackets are mounted on the mounting through holes. The control device includes a controller located inside the housing and a touch screen connected to the controller. The touch screen is located on the outer wall of the housing. The boiling point analyzer includes a heater, a short-necked flask, a condenser, a temperature sensor, an optical fiber detection assembly, and a support frame for fixing the condenser. The heater is located inside the housing directly below the mounting frame and is connected to the controller. The short-necked flask is fixed on the mounting frame and has a condensation port and a temperature measuring port. The condenser is located inside the condensation port, and the temperature sensor is located inside the temperature measuring port. The optical fiber detection assembly is fixed behind the short-necked flask. The support frame is fixed on the upper surface of the housing and is arranged adjacent to the condenser.

[0007] In one embodiment, a rubber stopper is pressed into the side wall of the temperature sensor to block the temperature measuring port, and an aviation connector is provided at the end of the temperature sensor away from the short-necked flask, which is connected to an aviation socket on the upper surface of the housing.

[0008] In one embodiment, the number of boiling point measuring instruments is two, respectively located on both sides of the housing.

[0009] In one embodiment, the housing is further provided with a pressure sensor, which is connected to the controller.

[0010] In one embodiment, a water inlet pipe is provided on the side wall of the housing, and the water inlet pipe extends into a first branch pipe and a second branch pipe, which are respectively connected to the water inlets of two condenser pipes.

[0011] In one embodiment, both the first branch pipe and the second branch pipe are equipped with a one-way valve, and the one-way valve is equipped with a solenoid valve, which is connected to the controller.

[0012] In one embodiment, a water outlet pipe is provided on the side wall of the housing, and the water outlet pipe is connected to the water outlet of two condenser pipes respectively.

[0013] In one embodiment, the fiber optic detection assembly includes a detection base, a detection bracket, and a fiber optic sensor.

[0014] In one embodiment, the detection base is fixedly connected to the upper surface of the box behind the short-necked flask, the detection bracket is a Y-shaped bracket, the bottom of the detection bracket is rotatably connected to the detection base, and the fiber optic sensor is disposed opposite to each other on both sides of the detection bracket.

[0015] In one embodiment, a high-temperature alarm device is also included, which includes an audible and visual alarm connected to the controller and is located on the upper end of the rear side wall of the enclosure.

[0016] The beneficial effects of this utility model are as follows: The motor vehicle brake fluid performance tester provided by this utility model has a controller installed inside the chamber. The controller is connected to the heater and various sensors. The controller processes the data transmitted from the sensors and displays information such as temperature and air pressure in real time on the touch screen, which is convenient for operators to monitor the experimental process. The controller can adjust the heating power of the heater to achieve multi-level temperature control and output different heating power at different time periods. The controller is set with test programs for equilibrium reflux boiling point and liquid stability. The heating steps in the two different test programs are different, and the calculation methods of the results are also different. The two test programs can be switched by pressing the button on the touch screen. The experimental process is fully automatic, reducing the difficulty of operation and minimizing human error. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of a motor vehicle brake fluid performance testing instrument according to one embodiment;

[0019] Figure 2 A schematic diagram of the inlet pipe of a motor vehicle brake fluid performance tester according to one embodiment;

[0020] Figure 3 This is a schematic diagram of the fiber optic testing component of a motor vehicle brake fluid performance tester according to one embodiment.

[0021] In the attached diagram, 10 is a motor vehicle brake fluid performance tester; 100 is a housing; 110 is a mounting bracket; 120 is a touch screen display; 200 is a boiling point tester; 210 is a short-necked flask; 211 is a condenser port; 212 is a temperature measuring port; 220 is a condenser tube; 230 is a temperature sensor; 240 is a fiber optic detection assembly; 241 is a test base; 242 is a test bracket; 243 is a fiber optic sensor; 250 is a support frame; 300 is an inlet pipe; 310 is a first branch pipe; 320 is a second branch pipe; 330 is a solenoid valve; and 340 is an outlet pipe. Detailed Implementation

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other. The technical solutions of the present invention will be further described below with reference to the accompanying drawings of the embodiments. The present invention is not limited to the specific embodiments described below.

[0023] It should be understood that the same or similar reference numerals in the accompanying drawings of the embodiments correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "front," "rear," "left," "right," "top," and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms describing positional relationships in the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0024] In one embodiment, such as Figures 1 to 3 As shown, a motor vehicle brake fluid performance tester 10 includes: a housing 100, a control device, and a boiling point tester 200; the housing 100 has a mounting through hole, and a mounting bracket 110 is provided on the mounting through hole; the control device includes a controller disposed inside the housing 100 and a touch screen display 120 connected to the controller, the touch screen display 120 being disposed on the outer wall of the housing 100; the boiling point tester 200 includes a heater, a short-necked flask 210, a condenser 220, a temperature sensor 230, an optical fiber detection assembly 240, and a... The heater is located inside the housing 100 directly below the mounting bracket 110 and connected to the controller. The short-necked flask 210 is fixed on the mounting bracket 110. The short-necked flask 210 is provided with a condenser port 211 and a temperature measuring port 212. The condenser tube 220 is located inside the condenser port 211. The temperature sensor 230 is located inside the temperature measuring port 212. The fiber optic detection assembly 240 is fixed behind the short-necked flask 210. The support bracket 250 is fixed on the upper surface of the housing 100 and is arranged adjacent to the condenser tube 220.

[0025] In this embodiment, a controller is installed inside the housing 100, positioned in front of the heater and separated from it by a heat insulation wall. The controller is an embedded control system with human-machine interaction, and includes programs for detecting the boiling point of the brake fluid balance reflux and for detecting the brake fluid stability. The operator can select test items via a touchscreen display 120 connected to the controller. Multiple mounting holes are provided on the housing 100, connecting the interior and upper surface of the housing. Mounting brackets 110 are installed within these holes. The short-necked flask 210 of the boiling point meter 200 is mounted on the mounting bracket 110. A heater is positioned below the mounting bracket 110 to heat the brake fluid inside the short-necked flask 210. The short-necked flask 210 contains a vertical condenser port 211 and an inclined temperature measuring port 212. The condenser tube 220 is inserted into the condenser port 211, and the temperature sensor 230 is inserted into the temperature measuring port 212. The fiber optic detection component 240 is set behind the short-necked flask 210 to detect the reflux rate. To stabilize the condenser tube 220, a support frame 250 is provided on the upper end face of the chamber 100. The support rod in the support frame 250 is fixed to the upper end face of the chamber 100, and a condenser tube clamp is provided on the support rod. The condenser tube clamp secures the condenser tube 220 to ensure that it does not shake during heating. The heater is connected to the controller, and the heating power of the heater is adjusted by the controller. The temperature sensor 230 and the fiber optic detection component 240 are both connected to the controller, and the detected temperature data and reflux rate are transmitted to the controller in real time. The controller analyzes and processes the data according to the preset program and displays the results on the touch screen 120.

[0026] In one embodiment, a rubber stopper is pressed into the side wall of the temperature sensor 230, blocking the temperature measuring port 212. An aviation connector is provided at the end of the temperature sensor 230 away from the short-necked flask 210, and this connector connects to an aviation socket on the upper surface of the housing 100. Specifically, the temperature sensor 230 is a PT100 temperature sensor. A high-temperature resistant rubber stopper is provided on the side wall where the sensor contacts the short-necked flask 210, tightly fitting the temperature measuring port 212 to prevent vapor from escaping. The aviation connector at the end of the temperature sensor 230 away from the short-necked flask 210 connects to an aviation socket on the upper surface of the housing 100, which in turn connects to a controller, enabling accurate transmission of temperature sensor 230 data to the controller and improving testing accuracy.

[0027] In one embodiment, there are two boiling point analyzers 200, which are respectively arranged on both sides of the housing 100. Specifically, the two boiling point analyzers 200 are symmetrically distributed on both sides of the housing 100, and the two boiling point analyzers 200 are set independently. The controller can control the two boiling point analyzers 200 to work separately and independently or simultaneously, which can realize the synchronous detection of multiple sets of brake fluid samples and improve the testing efficiency.

[0028] In one embodiment, a pressure sensor is also provided inside the housing 100, and the pressure sensor is connected to the controller. Specifically, the pressure sensor is installed on the inner wall of the housing 100 on the side of the controller, and is used to detect the atmospheric pressure at the test site. This facilitates calibration to the liquid temperature under standard atmospheric pressure after the equilibrium reflux is measured, thereby calculating the equilibrium reflux boiling point.

[0029] In one embodiment, a water inlet pipe 300 is provided on the side wall of the housing 100. The water inlet pipe 300 extends into a first branch pipe 310 and a second branch pipe 320. The first branch pipe 310 and the second branch pipe 320 are respectively connected to the water inlets of two condenser pipes 220. A water outlet pipe 340 is provided on the side wall of the housing 100. The water outlet pipe 340 is respectively connected to the water outlets of the two condenser pipes 220. Specifically, one end of the water inlet pipe 300 is connected to an external cooling water source, and the other end supplies water to the two condenser pipes 220 through the first branch pipe 310 and the second branch pipe 320 to ensure the condensation effect. The water outlet pipe 340 collects the water from the two condenser pipes 220 and discharges it outside the housing 100 to maintain stable water circulation in the system.

[0030] In one embodiment, both the first branch pipe 310 and the second branch pipe 320 are equipped with a one-way valve, and each one-way valve is equipped with a solenoid valve 330, which is connected to the controller. Specifically, each of the first branch pipe 310 and the second branch pipe 320 is equipped with a one-way valve, which can adjust the outflow rate according to actual needs. Each one-way valve is connected to a solenoid valve 330, which is used to control the opening and closing of the one-way valve, control the inflow rate, and ensure the correctness of the water flow direction. The solenoid valve 330 is connected to the controller, and the controller sends commands to the solenoid valve 330 to achieve precise water flow control.

[0031] In one embodiment, the fiber optic detection assembly 240 includes a detection base 241, a detection bracket 242, and fiber optic sensors 243. The detection base 241 is fixedly connected to the upper surface of the housing 100 behind the short-necked flask 210. The detection bracket 242 is a Y-shaped bracket, with its bottom rotatably connected to the detection base 241. The fiber optic sensors 243 are positioned opposite each other on both sides of the detection bracket 242. Specifically, the detection base 241 in the fiber optic detection assembly 240 is fixed to the rear of the short-necked flask 210 and tightly connected to the upper surface of the housing 100. The bottom of the detection bracket 242 is connected to the detection base 241 via a pivot, allowing the detection bracket 242 to rotate around the pivot. The fiber optic sensors 243 are positioned on two opposite sidewalls of the detection bracket 242, enabling one fiber optic sensor 243 to receive the light signal emitted by the other fiber optic sensor 243. In use, the detection bracket 242 is rotated to align the fiber optic sensors 243 with the lower end of the condenser tube 220 to detect the dripping rate of the reflux droplets.

[0032] In one embodiment, a high-temperature alarm device is also included, comprising an audible and visual alarm connected to a controller, which is located on the upper part of the rear side wall of the enclosure 100. Specifically, the audible and visual alarm is equipped with a buzzer and an LED light, and is fixed to the upper part of the rear side wall of the enclosure 100. It receives signals from the temperature sensor 230 via the controller. When the temperature exceeds a preset value, the buzzer and LED light activate simultaneously, emitting an audible and visual alarm to remind operators to handle the situation promptly and ensure experimental safety.

[0033] The general workflow of this utility model is as follows: Before use, take an appropriate amount of brake fluid into a short-necked flask, place the short-necked flask on a support frame, install the condenser tube bracket and condenser tube, adjust the appropriate height, adjust the fiber optic detection assembly so that the center line of the fiber optic sensor is aligned with the lowest edge of the bevel below the ground joint of the condenser tube, connect the temperature sensor, connect the power supply, heat the short-necked flask through the heater, detect the temperature inside the short-necked flask through the temperature sensor, and display it in real time on the touch screen. At this time, cooling water circulates on the condenser tube. After the brake fluid starts to heat up, the vapor enters the condenser tube. Under the action of the condenser tube, the vapor temperature drops rapidly and then liquefies and drips back into the short-necked flask from the condenser tube. The dripping rate is detected by the fiber optic sensor. When the condensation reflux rate tends to a certain stable rate, the temperature at this time is read, thereby detecting the equilibrium reflux boiling point or stability of the brake fluid. This invention uses a controller to adjust the heater, controlling the output of different heating powers at different time periods to ensure that the heating rate meets the requirements of GB 12982. The test program can be switched by buttons on the touch screen, enabling the motor vehicle brake fluid performance tester of this invention to test the equilibrium reflux boiling point or brake fluid stability, ensuring the accuracy and reliability of the test data, improving test efficiency, and ensuring driving safety.

[0034] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A motor vehicle brake fluid performance testing instrument, characterized in that, include: The enclosure, control device, and boiling point apparatus; The housing has mounting through holes, and mounting brackets are mounted on the mounting through holes. The control device includes a controller located inside the housing and a touch screen connected to the controller. The touch screen is located on the outer wall of the housing. The boiling point analyzer includes a heater, a short-necked flask, a condenser, a temperature sensor, an optical fiber detection assembly, and a support frame for fixing the condenser. The heater is located inside the housing directly below the mounting frame and is connected to the controller. The short-necked flask is fixed on the mounting frame and has a condensation port and a temperature measuring port. The condenser is located inside the condensation port, and the temperature sensor is located inside the temperature measuring port. The optical fiber detection assembly is fixed behind the short-necked flask. The support frame is fixed on the upper surface of the housing and is arranged adjacent to the condenser.

2. The motor vehicle brake fluid performance tester according to claim 1, characterized in that, A rubber stopper is pressed into the side wall of the temperature sensor, which blocks the temperature measuring port. An aviation connector is provided at the end of the temperature sensor away from the short-necked flask, and the aviation connector is connected to an aviation socket on the upper surface of the housing.

3. The motor vehicle brake fluid performance tester according to claim 1, characterized in that, There are two boiling point measuring instruments, which are respectively installed on both sides of the box.

4. The motor vehicle brake fluid performance tester according to claim 1, characterized in that, The box is also equipped with a pressure sensor, which is connected to the controller.

5. The motor vehicle brake fluid performance tester according to claim 3, characterized in that, The side wall of the housing is provided with a water inlet pipe, which extends into a first branch pipe and a second branch pipe. The first branch pipe and the second branch pipe are respectively connected to the water inlets of two condenser pipes.

6. The motor vehicle brake fluid performance tester according to claim 5, characterized in that, Both the first branch pipe and the second branch pipe are equipped with one-way valves, and each one-way valve is equipped with a solenoid valve, which is connected to the controller.

7. The motor vehicle brake fluid performance tester according to claim 6, characterized in that, The side wall of the box is provided with a water outlet pipe, which is connected to the water outlet of two condenser pipes respectively.

8. The motor vehicle brake fluid performance tester according to claim 1, characterized in that, The fiber optic detection assembly includes a detection base, a detection bracket, and a fiber optic sensor.

9. The motor vehicle brake fluid performance tester according to claim 8, characterized in that, The detection base is fixedly connected to the upper surface of the box at the rear of the short-necked flask. The detection bracket is a Y-shaped bracket, and the bottom of the detection bracket is rotatably connected to the detection base. The fiber optic sensors are arranged opposite each other on both sides of the detection bracket.

10. The motor vehicle brake fluid performance tester according to claim 1, characterized in that, It also includes a high temperature alarm device, which includes an audible and visual alarm connected to the controller and is located on the upper part of the rear side wall of the enclosure.

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