CN205192703U - Leak test platform - Google Patents

Abstract

The utility model relates to a sealing test bench, which comprises a shell, an end cover, a liquid medium, a rotary drive system, a pressure adjustment device, and a data collector. The internal cavity is connected, and the end caps are arranged at both ends of the shell to seal the shell; the rotating drive system includes a motor and a rotating shaft, and the motor drives the rotating shaft. One end of the rotating shaft is in contact with the liquid medium, and the other end of the rotating shaft is in contact with the air. The shaft and the shell are sealed and connected; the utility model has a simple structure and is convenient to assemble and disassemble; by pressurizing the liquid, it is safe and reliable, and can simulate the actual working conditions of the product to verify the static seal and dynamic seal, and has a data acquisition module for real-time Display the recorded data and feedback the sealing condition.

Description

Sealing test bench

technical field

The utility model relates to a test bench for verifying product performance, in particular to a dynamic sealing test bench, which belongs to the application technical field of sealing tests and the like.

Background technique

Rotary dynamic seals are widely used in equipment such as underwater robots. In different systems, the torque, frequency, working pressure, working temperature and other parameters of the rotating shaft are different according to different usage requirements and surrounding actual working environments. Low temperature resistance and good sealing of reciprocating rotation are important indicators that some underwater equipment need to guarantee. However, in the prior art, the performance verification effect of the underwater equipment is not ideal, and the performance index that cannot be truly fed back cannot meet the actual use requirements.

Utility model content

The utility model aims at the problems existing in the above-mentioned prior art, and provides a low-speed, low-temperature-resistant, reciprocating-rotating sealing test bench, which solves the problem of unsatisfactory performance verification effect in the prior art.

Technical solution of the utility model:

The test bench includes a shell, an end cover, a liquid medium, a rotary drive system, a pressure adjustment device, and a data collector. The liquid medium is sealed in the inner cavity of the shell. The two ends of the housing are hermetically connected with the housing; the rotary drive system includes a motor and a rotating shaft, the motor drives the rotating shaft, one end of the rotating shaft is in contact with the liquid medium, the other end of the rotating shaft is in contact with the air, and the sealing connection between the rotating shaft and the housing .

The liquid medium is a cryogenic liquid with a temperature range of 1°C-30°C.

An annular sealing groove is provided between the end cover and the housing, and a lip-shaped sealing ring is installed in the annular sealing groove.

A lip ring and a gray ring are used to seal the rotating shaft and the housing.

The pressure adjusting device adopts a manual hydraulic pump.

The advantages and effects of the utility model are as follows:

The structure is simple and easy to assemble and disassemble; by pressurizing the liquid, it is safe and reliable, and can simulate the actual working conditions of the product to verify the static and dynamic seals, and has a data acquisition module to display and record data in real time and feedback the sealing status. The rationality of the underwater static seal and dynamic seal of the rotating shaft structure seal is verified, which can meet the actual use requirements.

Description of drawings

Fig. 1 is the structural representation of the utility model.

1. Platform, 2. Pressure adjustment device, 3. Data acquisition module, 4. Liquid, 5. Shell, 6. End cover, 7. Rotary drive system.

detailed description

The utility model is described in detail below in conjunction with specific embodiments with reference to the accompanying drawings.

Example

The test bench includes a platform 1, a shell 5, an end cover 6, a liquid medium 4, a rotary drive system 7, a pressure adjustment device 2, a data collector 3, a shell 5, an end cover 6, a liquid medium 4, a rotary drive system 7, The pressure adjustment device 2 and the data collector 3 are arranged on the platform 1, the liquid medium is cryogenic liquid, the liquid medium 4 is sealed and arranged in the inner cavity of the housing 5, the pressure adjustment device 2 and the data collector 3 are connected to the inner cavity of the housing 5, The end cover 6 is arranged on both ends of the housing 5 and is in sealing connection with the housing; the rotary drive system 7 includes a motor and a rotating shaft, the motor drives the rotating shaft, one end of the rotating shaft is in contact with the liquid medium, the other end of the rotating shaft is in contact with the air, and the rotating shaft Sealed connection with the shell.

An annular sealing groove is provided between the end cover and the housing, and a lip-shaped sealing ring is installed in the annular sealing groove.

A lip ring and a gray ring are used to seal the rotating shaft and the housing.

There are sealing grooves and lip rings between the end cover and the shell, which are used to evaluate the static sealing performance under different pressures. A lip ring and a gray ring are installed between the rotating shaft and the housing, and the dynamic sealing performance of the rotating shaft is assessed respectively.

The pressure adjustment device is mainly responsible for providing the required pressure source for the test bench. It consists of a manual booster pump and pipelines. The manual booster pump can accurately control the pressure of the system.

The data collector is mainly responsible for collecting the real-time pressure, motor speed and rotation frequency of the test system.

When examining the static seal, there is a sealing groove and a lip ring between the end cover 6 and the shell 5. The liquid medium in the shell is pressurized by the pressure adjustment device 2, and the pressure is 0.5 MPa each time, and the pressure is maintained for 30 minutes. The real-time pressure is determined by The data acquisition module 3 displays the pressure in real time, and observes whether the pressure drops; when inspecting the dynamic seal, use the lip ring and gray ring simulation between the rotating shaft and the housing for verification, and use the pressure adjustment device 2 to add pressure to the liquid medium in the housing 5 Pressure to 3MPa, then power is supplied to the rotary drive system 7, the set speed is 120rad/min, the reciprocating rotation frequency is 4Hz, the motor in the rotary drive system 7 drives the rotating shaft to rotate, and the pressure in the housing, the rotary frequency and Rotating shaft speed, if the value displayed by the pressure remains unchanged, it means that the sealing is good. This test verifies the sealing of the rotating shaft under different reciprocating rotation frequencies and torques.

Through the test, under different working conditions, the utility model can well simulate and verify the underwater static sealing and dynamic sealing of a certain type of equipment, and meet the design requirements.

The above are specific embodiments of the utility model and the applied technical principles. Any equivalent transformation based on the technical solution of the utility model falls within the scope of protection of the utility model.

Claims (5)

1. The seal test bench is characterized in that it includes a shell, an end cover, a liquid medium, a rotary drive system, a pressure adjustment device, and a data collector. The liquid medium is sealed in the inner cavity of the shell, and the pressure adjustment device, the data collector and the shell The internal cavity is connected, and the end caps are arranged at both ends of the shell to seal the shell; the rotating drive system includes a motor and a rotating shaft, and the motor drives the rotating shaft. One end of the rotating shaft is in contact with the liquid medium, and the other end of the rotating shaft is in contact with the air. There is a sealed connection between the shaft and the housing. 2. The sealing test bench according to claim 1, characterized in that said liquid medium is a cryogenic liquid with a temperature of 1°C-30°C. 3. The sealing test bench according to claim 1, characterized in that an annular sealing groove is provided between the end cover and the housing, and a lip-shaped sealing ring is installed in the annular sealing groove. 4. The sealing test bench according to claim 1, characterized in that a lip ring and a gray ring are used for sealing between the rotating shaft and the housing. 5. The sealing test bench according to claim 1, characterized in that said pressure adjusting device adopts a manual hydraulic pump.