7 results about "Rotary-screw compressor" patented technology

The application provides a compressor auxiliary installation device and an assembly table. The compressor auxiliary installation device is used for installation of an inner bearing of a screw compressor. The screw compressor comprises a body, a first end cover, a second end cover, at least one support shaft and at least one four-point contact ball bearing. The four-point contact ball bearing is arranged on the support shaft and abuts one of the first end cover and the second end cover. The four-point contact ball bearing comprises balls and a first mounting part. The balls are rotatably arranged on the first mounting part, and the first mounting part is sleeved on the support shaft. The compressor auxiliary installation device comprises at least one test part. The test part is sleeved on the support shaft. The test part abuts the balls and the first mounting part respectively. The side, away from the first mounting part, of the test part abuts one of the first end cover and the second end cover. In the radial direction of the support shaft, the test part and the support shaft are detachably connected. The test part is convenient to dismount or mount on the support shaft.

This invention discloses a centralized VOCs gas recovery device and process for zero emissions at a station, belonging to the field of ecological governance technology. The specific steps of the process are as follows: I. Before gas recovery, the water cooling system and hydraulic system are debugged and safety parameters are set, while the status of each valve is checked; II. The triethylene glycol tail gas and VOCs gas in the venting main are collected and pretreated, and the pretreated triethylene glycol tail gas and VOCs gas are pressurized in one stage. This invention ensures a non-combustion state, reduces the workload of on-site installation and maintenance, simplifies the overall recovery process, eliminates the need for the high power consumption and complex frequency conversion control of conventional reciprocating machines and screw compressors, reduces energy loss, reduces operating costs, and comprehensively avoids risks such as equipment overpressure, gas backflow, and flare backfire, ensuring system safety and stable recovery efficiency. Therefore, we propose a centralized VOCs gas recovery device and process for zero emissions at a station.

A screw compressor includes a first seal, a second seal, and a third seal which are non-contact seals from a rotor side to a bearing side of a shaft seal portion, a compressed gas supply device which is different from a rotor that supplies compressed gas between the first seal and the second seal, and a heating device that heats the compressed gas supplied between the first seal and the second seal from the compressed gas supply device.

The utility model discloses a kind of two-stage compressor and air conditioning system, the two-stage compressor includes suction end cover, further include the screw compressor for the low-pressure stage part of the two-stage compressor, and the sliding vane compressor for the high-pressure stage part of the two-stage compressor;The screw compressor and the sliding vane compressor are connected in series in the rear end of the suction end cover.Compared with prior art, the utility model uses the two-stage compressor of low-pressure stage for screw compressor, high-pressure stage for sliding vane compressor, compared with traditional two-stage screw compressor can be applied to lower exhaust capacity, and with smaller volume and lower cost, higher operating stability.

The application discloses a device fault detection method and device and a storage medium. In one aspect, the prior probability of occurrence of each fault cause is determined based on the operation data of a screw compressor, and the likelihood probability of occurrence of a target fault under the condition of occurrence of each fault cause is determined, the posterior probability of occurrence of each fault cause corresponding to the occurrence of the target fault is calculated according to the prior probability and the likelihood probability, and the detection order of all fault causes when the target fault occurs is determined according to the size of the posterior probability of occurrence of each fault cause. In another aspect, the time sequence data of a characteristic parameter is monitored to determine whether the preset range under the current working condition is met, so that the reliability of subsequent fault causes is improved.

The oil path self-cleaning device, method, system, electronic equipment and storage medium provided by the embodiment of the present application can realize the effects of automatic adsorption of impurities and automatic removal of impurities by configuring at least one sedimentation pipe, an electromagnetic adsorption device and a decontamination device for the sedimentation pipe in the oil path self-cleaning device, winding an electromagnetic circuit of the electromagnetic adsorption device around the sedimentation pipe, configuring the oil path pipe with the screw compressor, opening a connecting port on the side of the oil path pipe, connecting a first sedimentation pipe port of the sedimentation pipe with the connecting port, and connecting a second sedimentation pipe port of the sedimentation pipe with the decontamination device.