A stand for imitating human external respiration, designed to test personal protective equipment for human respiratory organs.

摘要

Utility model A stand for simulating human external respiration is intended for testing personal protective equipment for respiratory organs. Supplemented with a head dummy for testing breathing apparatus with a mask or helmet, capable of supporting the work of the stand, and also performing the functions of heating the outer layer of the head dummy and changing the size of the head. achieved in the utility model, is to eliminate the drainage system, which reduces the number of operations performed with the device. The essence of the utility model is to achieve the above technical result by creating a stand for simulating human external respiration, for testing personal respiratory protection equipment (hereinafter - stand for simulating external respiration of a person, or a stand), intended for testing personal respiratory protection equipment (RPE), including a frame on which the main pump is mounted, which creates a pulsating flow with separated lines of inhalation and exhalation with the possibility of providing a return movement of the gas-air mixture (DHW) through the RPE, an exhalation line containing a humidification and heating unit equipped with an expansion barrel and a heating system, an inhalation line made in the form of a DHW cooling unit equipped with a branch for connection with an oxygen consumption simulation unit that provides hot water extraction, including an auxiliary pump for hot water extraction during the inhalation phase and the release of hot water into the atmosphere during the exhalation phase, with the possibility of being actuated by a servo drive and control to simulate oxygen consumption in different breathing modes, a gas composition control system made in the form of a gas analyzer, a supply unit carbon dioxide, containing a device for regulating the flow of carbon dioxide and passing carbon dioxide during the inhalation phase through the valve into the main pump, which is mixed with hot water supply, and sensors that provide feedback to the control unit, which has an interface for controlling the stand, with the ability to simulate different breathing modes , including a calculating unit made in the form of a microcontroller, recording the test protocol in automatic mode, a nitrogen supply unit containing a device for regulating the flow and pressure of nitrogen and made with the possibility of passing nitrogen in the inhalation phase through the valve into the main pump for mixing with DHW, while the main the pump is connected to the inhalation and exhalation lines through check valves, while the DHW cooling unit contains a condensate drain pipe connected to the humidification and heating unit. taking into account information from the sensors located in each block and fixing all breathing parameters "inhalation" and "exhalation" allows the stand to simulate any "breathing" mode and quickly change modes according to the user's task. experienced niy RPE with face parts, including hazardous to human life and health environments, as well as by placing a dummy head connected to the test bench in the test chamber. tests (acceptance, certification, etc.), as well as for solving research problems and tasks of developing new types of RPE. Elimination of the drainage system for draining the condensate of the DHW cooling unit by directing moisture into the tank of the humidifier block, thereby avoiding the process of draining and cleaning drainage system, presented in the closest analogue of the declared utility model, optimized the process. Improvement of operational characteristics is achieved by eliminating the process of draining condensate and cleaning the drainage system presented in the closest analogue of the declared utility model, which optimized the operation of the device. The technical design of the device allows more it quickly and with the use of fewer operations to achieve the set result. The direction of the condensate of the drainage system to the tank of the humidification and heating unit made it possible to exclude the drainage system, as well as the number of operations performed with the device.