31 results about "Hypobaric chamber" patented technology

A hypobaric apparatus and methods capable of inducing and maintaining in stored horticultural cellular tissue controlled pervaporation of undesired chemical compounds without reaching the boiling point of intracellular water molecules, comprising a hypobaric chamber constructed to provide a leak rate of less than 4.0 mm Hg per hour, sensors and regulators coupled to the chamber and to a controller to measure and regulate target correlates. Commodities processed, including processing storage periods longer than any known involving controlled atmosphere, exhibit an absence of low oxygen injury, high carbon dioxide injury, chilling injury, leaf abscission, leaf de-greening, fungal decay, bacterial decay, gravitational curving, geotropic curvatures, leaf epinasty, stem epinasty, flower fading, senescence, live invertebrates at any life stage, fumigant chemical compounds, volatile fungicides, volatile bactericides; no advance in ripening; minimal water loss.

The invention discloses a low-pressure chamber connection throat structure. The low-pressure chamber connection throat structure is characterized by comprising a chamber door component (1), wherein an oil cylinder rod (2) is arranged below the chamber door component (1) and connected with an oil cylinder component (7); an airtight door frame (3) is arranged above the chamber door component (1); a fixed hook (4) for the chamber door component (1) is arranged on the side of the airtight door frame (3); a power ring (5) with a bump is arranged at the inner side of the fixed hook (4) and connected with a pneumatic rotary motor (6). The throat structure has the beneficial effects that: A, a power ring hook opening structure is adopted, so that synchronous opening of the hook is ensured; B, the opening power of the chamber door component is controlled by air pressure, so the reliability is high; the hydraulic cylinder mechanism in the structure can reset the chamber door and also can ensure stable opening of the chamber door; a buffer spring is arranged on the system, so that the chamber door does not rebound after buffer is started, the low-pressure chamber connection throat structure has a reliable sealing effect, is simple in structure, and fast to start, and can be repeatedly used.

The present invention discloses an experimental animal low-pressure cabin for plateau medicine research, and a pressure control method based on the experimental animal low-pressure cabin, and belongs to the technical field of medical scientific research instrument equipment. The experimental animal low-pressure cabin comprises a work cabinet and an electrical cabinet arranged on the bottom portion of the work cabinet, wherein the work cabinet adopts the full transparent design so as to easily meet the illumination requirements of the experimental animals and make the laboratory personnel easily perform real time observation on the experimental animals, a gas inlet pipe extending into the work cabinet and a gas discharge pipe extending into the work cabinet are arranged inside the electrical cabin, the gas inlet pipe and the gas discharge pipe are respectively provided with an electrically controlled proportional valve and a diaphragm vacuum pump, an electrical program control system is further arranged inside the electrical cabinet, and a PLC controller adjusts the dynamic balance between the gas complementing amount and the gas exhaust amount by controlling the opening degree of the electrically controlled proportional valve and the opening of the diaphragm vacuum pump so as to make the altitude fluctuation be maintained at a certain level. According to the present invention, the air pressure control way used by the control method of the present invention is unique, the fluctuation range is small, the accuracy is high, and the number of the gas exchange can be ensured.

The invention discloses a hydraulic / pneumatic high pressure relief valve. The pressure relief valve can utilize low-pressure oil / gas as power and adapt to high-pressure oil unloading and is small in size, light and high in reliability, and remote pressure relief can be achieved. The hydraulic / pneumatic high pressure relief valve overall structurally comprises a high-pressure bin, a low-pressure bin and a connecting flange used for connecting the high-pressure bin and the low-pressure bin. According to the pressure relief valve, the manner of combining a columnar valve and a ball valve is adopted, so that sealing of high-temperature and high-pressure oil is guaranteed. When pressure relief is needed, low-pressure oil (gas) input by the low-pressure bin is utilized, a needle-shaped ejector rod is pushed to open a sealing ball and a columnar valve element of the high-pressure bin, and pressure relief is completed. To avoid vibration and noise and prevent a sealing component from being eroded, a special changing throttling bin clearance channel is designed, and therefore the pressure of flowing high-pressure oil is reduced through water head losing. After pressure relief, the oil flows along with the clearance and flows out of a pressure relief valve oil return connector.

The invention provides a hypobaric oxygen chamber for experimental animals, which is characterized in that the drinking water device communicates with the air flow of the environment in the chamber. The hypobaric oxygen chamber has a simple structure and is convenient to operate, and can prevent the drinking water device from overflowing and soaking the experimental animals.

The invention discloses a modularized medium-voltage solid soft starter cabinet, which comprises a removable type hypobaric chamber arranged on the upper part of a cabinet body, a hyperbaric chamber arranged at the back part of the removable type hypobaric chamber, and a cable chamber arranged below the cabinet body, wherein a hypobaric chamber door is arranged on the front part of the removable type hypobaric chamber, one side of the hypobaric chamber is locked by using a bolt, and the other side of the hypobaric chamber is provided with a hinge; the front part of the cable chamber is provided with a cable chamber door, one side of the cable chamber door is fixed on a bending angle at one side of the cabinet body by adopting a screw lock; the cable chamber door can be opened by only dismantling the screw lock; the other side of the cable chamber door is provided with a hinge; an incoming wire and a outgoing wire of the soft starter cabinet are connected in the cable chamber; a fuse module is arranged in the cable chamber, the fuse module is connected with a rear copper bar by using a cable; and the fuse module can be installed or dismantled at any time according to the requirement of a user. Due to the adoption of a modular structure, the modularized medium-voltage solid soft starter cabinet has the advantages of convenience for transportation and maintenance and flexibility in installation.

The invention provides smoldering smoke particle collecting equipment for an electrical conductor, which comprises a smoke generating device, a smoke collecting cover and a ventilating pipe, wherein the smoke generating device is provided with a power supply; the smoke collecting cover is arranged on the smoke generating device and further forms a smoke collecting chamber with the smoke generating device; the ventilating pipe is communicated with the smoke collecting chamber; the smoke collecting cover and the ventilating pipe are both provided with a smoke particle collector; the smoke particle collectors comprise collecting barrels, electromagnets, protecting sleeves and movable rods; springs and iron columns are arranged in the collecting barrels; one ends of the springs are connected with the bottom ends of the collecting barrels; the iron columns are connected with the springs; the electromagnets are connected with the power supply and are further all positioned at the other endsof the springs together with the iron columns; the protecting sleeves are connected with the collecting barrels; the movable rods are sleeved in the protecting sleeves in a sliding way and are further connected with the iron columns; and the movable rods are provided with smoke particle collecting meshes. By using the smoldering smoke particle collecting equipment for the electrical conductor, which is provided by the invention, the automatic collection of the smoldering smoke particles of the electrical conductor is achieved; a conventional manual collecting way is avoided; and the collection of the smoke particles in the environments of some environment simulating experimental devices (such as a hypobaric chamber and a drop tower) and the like, which are not applicable to manual collection, is achieved.

The present application provides a cooling and ventilation simulation device and a control method for high-altitude airborne equipment testing, comprising: an air source, a filter, a pressure reducing valve, a flow control unit, a refrigerator, a heater and a back pressure valve connected in sequence, The output end of the back pressure valve is connected to the low-pressure cabin, and the high-altitude airborne equipment is tested in the low-pressure cabin; the air source is used to output high-pressure air, the filter is used to filter out particles and oily impurities in the air, and the pressure reducing valve is used to reduce the high-pressure air. The flow control unit is used to control the set flow of the decompressed air, the refrigerator and the heater are used to adjust the temperature of the air, and the back pressure valve is used to stabilize the pressure difference between the cooling ventilation system and the low pressure chamber. The beneficial effects of the present application are: the low-pressure cooling and ventilation environment is provided for the low-pressure chamber through the ventilation device of the present application, so that the test environment is closer to the real working condition; and the ventilation device of the present application can also realize the controllable flow, pressure and temperature of the ventilation, Ensure the stability of the test environment.