Mechanical seal detection device and flushing detection process

Abstract

The invention belongs to a mechanical seal detection device and a flushing detection process. The device comprises a mechanical structure part, a detection part and a control part. The mechanical structure part comprises a main motor, and a frequency converter arranged on the main motor. A main motor spindle is connected with the pump shaft through a coupler. One side of the pump bracket is connected with the pump shell through a pump body bolt. An end cover is arranged on the outer side of the pump shell, the pump shaft in the pump bracket is connected with the shaft sleeve through a key, a locking nut matched with the shaft sleeve is arranged at the end of the pump shaft, a rotating part of the mechanical seal is arranged outside the shaft sleeve, a fixed part of the mechanical seal is connected with the pump shell, and the rotating part of the mechanical seal is matched with the fixed part of the mechanical seal. According to the invention, dynamic detection of the mechanical seal can be realized, and the dynamic detection is carried out based on various flushing schemes of API682, so that the real sealing effect of the mechanical seal can be truly reflected, and temperature, pressure, vibration, displacement and rotating speed data can be effectively monitored.

Description

technical field [0001] The invention belongs to the technical field of mechanical seal detection, and specifically relates to a mechanical seal detection device and a flushing detection process by simulating the operating condition of the mechanical seal and various flushing schemes based on API682 under the working condition. Background technique [0002] At present, the mechanical seal manufacturing and user units test mechanical seals mostly by static detection methods, and the normal required test method is air pressure test; the test device consists of a plugging port, a dummy shaft, and an inflatable pipeline, and can only simulate the pump body. Working conditions, the test device does not have pipelines corresponding to the API682 flushing scheme, and cannot simulate the actual working conditions of API682. There are very big differences between the mechanical seal in the testing process and its actual operating conditions in different API682 flushing schemes. The ma...

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Problems solved by technology

[0002] At present, the mechanical seal manufacturing and user units test mechanical seals mostly by static detection methods, and the normal required test method is air pressure test; the test device consists of a plugging port, a dummy shaft, and an inflatable pipeline, and can only simulate the pump body. Working conditions, the test device does not have pipelines corresponding to the API682 flushing scheme, and cannot simulate the actual working conditions of API682

There are very big differences between the mechanical seal in the testing process and its actual operating conditions in different API682 flushing schemes. The main manifestations are: 1. It can only provide a constant working condition of the pump body, while the mechanical seal is in various The flushing fluid, spacer fluid flow mode and sealing point in the operating conditions of the API682 flushing scheme are not reflected

2. During the test, the dynamic and static sealing rings can achieve relative movement, but the flushing fluid only shows a single flushing direction

API682 provides a variety of flushing schemes such as single-point flushing, external circulation, pressurized circulation, and multi-channel flushing. The existing devices cannot be simulated and realized. The test results under this experimental condition cannot reflect the mechanical seal in various API682 flushing schemes. sealed state

The test process and conclusion cannot reflect the real sealing effect of the tested mechanical seal

3. The test data is based on manual observation, and historical data such as temperature, pressure, speed, and vibration cannot be queried; 4. The test process is manually operated, without an executable operating system, and the expected speed of the mechanical seal cannot be adjusted. Monitoring of vibration, displacement and rotational speed data

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