Pressure test standard for heat conduction oil boiler diesel burner

Introduction to the pressure test process of the heat-conducting oil boiler diesel burner: 1. Preparation for the pressure test of the heat-conducting oil boiler light oil burner: After the entire heating system is installed according to the standard pressure test, the liquid phase heat carrier furnace is tested with 1.5 times the working pressure, and the test medium water (0.5 0.7% hydroxide needle is prepared with special cleaning fluid YDJ and added to the furnace for pressure test. After the pressure test is qualified, the flushed compressed air is sent to the water pipe in the pot to dry), because the water pressure test is not easy to drain, which poses a hidden danger for safe operation. The air temperature during the pressure test should be greater than 5°C, and it should be kept under the test pressure for 20 minutes. When the pressure drops to the working pressure, check the connecting parts for leaks. If there is any leakage, pressure test should be carried out again after timely repair. 2. Qualification standard for pressure test of thermal oil boiler diesel burner: If the pressure test meets the following requirements, it meets the requirements: there is no sign of leakage on the metal wall and welding of pressurized parts. No residual deformation was found after the hydraulic test. 3. Safety measures and precautions for the thermal oil boiler diesel burner: During the pressure test, there should be a particularly obvious isolation sign on the test site, and miscellaneous personnel are not allowed to enter the test area. During the pressure test, the pressure test operator must not stand in front of the flange. People who have nothing to do with the stress test are not allowed to stand in the test area and stop to watch. Range of constant pressure mode: biomass boiler diesel burner heating system in constant pressure mode heating system: in the high temperature hot water supply system, because the water temperature is higher than the normal water saturation temperature, the pressure in the system should be saturated accordingly The pressure of the water supply temperature to avoid hot water vaporization and water shock. Water is an incompressible liquid and will be depressed when it leaks. On the contrary, water heating volume shrinks, if the pressure is unstable, it will destroy the equipment in the heating system. Therefore, in order to avoid depressurization, evaporation and contraction, the high-temperature hot water system must stabilize the pressure in the system, which is a constant pressure. The constant pressure mode of the hot water heating system is as follows: 1) The constant pressure mode of the elevated water tank is adopted. The fixed pressure point of this mode is located at the entrance of the hot water circulation pump or the return water main, and is only installed as an elevated water tank. The structure is simple, the operation is stable and reliable, the system pressure can be stabilized, and the overflow and water replenishment requirements of the system network can be met. In such a system, the height of the water tank device must meet the requirement of no evaporation at the highest point in the system. Therefore, the location of the device is higher. This constant pressure mode is suitable for low temperature water heating systems with a small heating range. 2) The constant pressure water supply pump mode is adopted. 3) When the heating system pressure is high, the elevated water tank cannot guarantee the pressure required by the system. At this time, the constant pressure mode of the water supply pump should be used. This constant pressure method is widely used in the heating system of the Soviet hot water boiler diesel burner. There are two ways of constant pressure of water supply pump: continuous and intermittent. The installation of fixed pressure boiler diesel burner consists of water supply tank, water supply pump and pressure regulator. When the system is in normal operation, the pressure supply pump is continuously supplemented by the pressure regulator to adapt to the leakage of the system, thereby maintaining the stability of the system pressure. When the circulating pump stops running, the shut-off valve in front of the pressure regulator can be closed. The supply pump continues to refill to maintain the static pressure required by the system. This constant pressure mode does not need to shrink the water tank, so the equipment cost is low. In addition, the water supply pump and water are constant pressure, the pump power is small, and the operating cost is small. Therefore, this method is widely used in my country's hot water heating system. The biggest disadvantage of this constant pressure mode is that if the system suddenly loses power, the water pump will lose its constant pressure function. In order to avoid water shortage and vaporization of the boiler diesel burner at this time, the system adopts pressurized water auxiliary installation. When the circulating water pump is running, the circulating water will not flow back to the booster system due to the water-assisted installation. When the circulation pump and the water supply pump are closed due to a sudden power failure, the pressure water supply system will be put into operation immediately, the check valve will automatically open, and the pressure water will flow through the hot water boiler diesel burner and be discharged from the air collection tank, thereby preventing the furnace chamber The waste heat of the boiler causes the water to evaporate in the boiler diesel burner. At the same time, the operation should close the water supply and return to the main hot water valve to isolate the heat source from the heating network. The feed water pump of the biomass boiler diesel burner used for the constant pressure of filling water is controlled by the electric contact pressure gauge, and the inlet pressure of the circulating water pump is kept within a certain range. When the pressure is lower than this range, the action and contact monitoring circuit passes through the water supply pump Motor, water supply pump running, water injection, hot water circulation pump inlet pressure exceeds a certain range, hot water boiler diesel burner pressure gauge is to cut off the pump power, the water supply pump is closed. Therefore, the reciprocating motion and continuous filling of the water supply pump, and keeping the system pressure within a certain range, make the system constant pressure, due to continuous hydration, energy saving than continuous hydration, but its control and constant pressure quality ratio continuous poor moisturizing method, shaking Frequent defects that are easily damaged by contact with pressure and pressure gauges. ! If you are interested in diesel combustion engines, please contact us for a quote!