Device for testing flexural strength of quartz tube

The utility model discloses a device for testing the flexural strength of a quartz tube, which comprises a V-shaped groove, a force cell, a measurer display and a control unit, wherein the force cell and the measurer display are connected with a force measuring head, and the control unit is connected with the measurer display; the control unit has the following circuit units specifically including a sensor lifting unit, a pressure value display unit and a maximum value test unit; the sensor lifting unit is used for moving the force cell, so that the force measuring head is pressed against the quartz tube; the pressure value display unit is used for displaying real-time pressure values; and the maximum value test unit is used for testing an actually-measured maximum value obtained by that with the downward moving of the force measuring head, the pressure is continuously increased, and the displayed pressure value is constantly updated until the quartz tube is fractured, and recording and storing the actually-m