6results about How to "Solve Exhaust Problems" patented technology

The application discloses a complex sand core gas evolution and local temperature coupling control device which is composed of a central control cabinet, a circulating machine, a water tank, a vacuum pump, a sand core exhaust heat dissipation pipeline and a conformal patch, wherein the central control cabinet is connected with the circulating machine, the vacuum pump and a pouring control system, the main body of the central control cabinet is a central control computer and a PLC electric control system, and the central control cabinet is used for receiving a pouring signal and controlling the circulating machine and the vacuum pump; a cooling system is arranged in the circulating machine, a liquid inlet end of the cooling system is connected with the water tank, and a liquid outlet end of the cooling system is connected with a liquid inlet of the sand core exhaust heat dissipation pipeline; one end of the water tank is connected with the circulating machine, and the other end of the water tank is connected with a liquid outlet of the sand core exhaust heat dissipation pipeline; and the main body of the sand core exhaust heat dissipation pipeline is a copper pipeline, and the middle section of the copper pipeline is tightly attached to the conformal patch. The device can solve the problems that the existing sand casting technology cannot realize the local temperature field control of complex irregular inner cavities, the end sand core gas evolution cannot be discharged in time and the like, and high-quality cores which meet the complex inner cavity forming and quality requirements of high-end aluminum alloy castings can be produced.

The invention relates to the technical field of liquid injection, and discloses a filling system and a filling method.The filling system comprises a valve set, a first valve set, a second valve set, a third valve set and a fourth valve set, the first valve set and the second valve set are communicated with a first opening of a two-way hydraulic unit, and the third valve set and the fourth valve set are communicated with a second opening of the two-way hydraulic unit; the vacuumizing piece is communicated with the first channel and the third channel; the liquid injection part is communicated with the second channel and the fourth channel; the filling system has a vacuumizing state, a first liquid injection state and a second liquid injection state, in the vacuumizing state, the first channel and the third channel are opened, and the second channel and the fourth channel are closed, in the first liquid injection state, the first channel and the fourth channel are opened, and the second channel and the third channel are closed, and in the second liquid injection state, the second channel and the third channel are opened. The first channel and the fourth channel are closed. The filling system can reduce the gas amount in the two-way hydraulic unit, increase the liquid filling amount in the two-way hydraulic unit, and improve the performance and reliability.

An aero-engine test stand oil supply device and method with exhaust function, the oil supply device comprises a test stand, further comprising an oil depot, an oil tank, an oil gas separation tank and a recovery tank; the oil depot is used for storing aviation kerosene, and the oil depot is connected to the oil tank through a first oil pipeline; a pressure pump is connected to the oil tank through an air pipe; the oil tank is connected to the oil gas separation tank through a second oil pipeline; the oil gas separation tank is connected to the test stand through a third oil pipeline; the oil gas separation tank is further connected to the recovery tank through a fourth oil pipeline; a first valve is arranged on the first oil pipeline, a second valve is arranged on the third oil pipeline, and a third valve is arranged on the fourth oil pipeline; a shock device is arranged beside the second oil pipeline and used for shocking the oil pipeline. The shock device can shock the oil pipeline, and the aviation kerosene containing gas can be discharged into the recovery tank after the pressure pump is pressurized, so as to solve the problem of exhaust of the aero-engine test stand oil supply pipeline.

A complex sand core gas generation and local temperature coupling control device is disclosed. The device comprises a central control cabinet, a circulating machine, a water tank, a vacuum pump, sand core exhaust and heat dissipation pipes, and conformal patch. The central control cabinet is connected to the circulating machine, vacuum pump, and pouring control system. The main body of the central control cabinet is a central control computer and a PLC electrical control system, used to receive pouring signals and control the circulating machine and vacuum pump. The circulating machine has an internal cooling system; its inlet is connected to the water tank, and its outlet is connected to the inlet of the sand core exhaust and heat dissipation pipes. One end of the water tank is connected to the circulating machine, and the other end is connected to the outlet of the sand core exhaust and heat dissipation pipes. The main body of the sand core exhaust and heat dissipation pipes is a copper pipe, with its middle section tightly fitted to the conformal patch. This device can solve the problems of existing sand casting technology, such as the inability to achieve local temperature field control in complex irregular internal cavities and the inability to timely discharge gas generated from the end sand core, producing high-quality cores that meet the forming and quality requirements of complex internal cavities in high-end aluminum alloy castings.

This invention discloses a method and system for feature extraction and intelligent identification of mine microseismic signals, belonging to the fields of signal processing and mine safety monitoring. The method involves acquiring, framing, and standardizing raw vibration signals through underground monitoring substations, and then inputting the data into a lightweight neural network deployed within the substations. This network includes a one-dimensional convolutional layer and an embedded squeeze-excitation attention module for adaptively enhancing effective microseismic signal features and suppressing background noise. The ratio of short-time average energy to long-time average energy triggers the neural network inference process, outputting the probability value of whether the signal belongs to rock fracture, artificial blasting, or mechanical noise. When the probability of a rock fracture signal exceeds a threshold, a valid microseismic event is confirmed and a timestamp is recorded. This invention achieves intelligent edge-end identification of microseismic signals, significantly reducing early warning delays, minimizing data transmission bandwidth usage, and improving identification accuracy and system reliability in complex underground environments.

The application discloses a kind of integrated insect egg floatation enrichment sampling devices, including the cup of bottom opening and detachable bottom closure, main cavity and filter device are equipped in cup, and main cavity is divided into stirring mixing zone, filter area and floatation enrichment area;Sample enrichment and observation window are extended outwards from the top of cup side wall portion;Cup is also provided with suction assembly and elastic deformation to balance pressure telescopic section.The application can complete mixing, filtration, floatation enrichment, exhaust bubble and observation in single device, avoid sample transfer multiple times, and the loss of target caused in transfer, effectively eliminate bubble interference and ensure that target floats after closely below observation window, through inclined posture, target is more easily floated to observation window part, significantly improve sampling efficiency and detection accuracy, and effectively avoid the loss caused by target sample transfer.