Doubts about using pressure regulators on heating pipes
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This post was last edited by Java Tiger on 2018-4-7 at 11:22. A heat exchange station is currently under construction; the control room in the boiler house, the heat exchange area, and a partial second floor are equipped with heating systems. The supply and return pipes for the heating pipes are connected directly to the primary circulation water pipes of the hot water boiler. The designed operating pressure for the boiler, pipes, and heat exchangers is 0.39 MPa, while the operating pressure for the heating system is 0.4 MPa. The pipes and radiators for heating were purchased long ago. The 20-ton hot water boiler that arrived has a working pressure of 1.0 MPa, but the design was modified during installation so that the pipes were installed to handle a pressure of 1.6 MPa :(. Will the equipment and pipes in the heating system be able to withstand that? Even if they can withstand such high pressure, the lifespan of the radiators and pipes will still be shortened, right? :So I’m thinking of installing a pressure regulator at the beginning of the heating water supply pipe to reduce the pressure to around 4 kilograms, and a check valve at the end of the heating water return pipe to prevent the boiler’s return pipe from backflowing into the heating pipes due to high pressure. Is this a viable approach? Everyone, think of a way to help me!
This post was last edited by Java Tiger on 2018-4-7 at 11:28. I’ve been searching the Internet for answers to this question for two days, but still haven’t found any. Also, if a check valve is installed, with an online pressure of 1.0 and a pressure inside the heating pipes of 0.4, could this cause the check valve to become stuck and prevent water from flowing out of the heating pipes?
The soul painter – watch it soon, everyone; P
The last edit to this post was made by qin8850360 on 2018-4-8 at 11:36. By \"operating pressure\" of the boiler, do you mean the rated pressure indicated on the nameplate? What is your actual work pressure? And are you a direct supplier or an indirect one? You say it should be connected directly to the network, and you mention the operating pressure of the heat exchanger – is there actually a heat exchanger or not? What type of heat exchanger is it? Plate heat exchanger?
The return water pressure is low; it definitely can’t flow back~
For whom does the heat exchanger exchange heat? Is it used after heat exchange due to the high temperature of the boiler water?
Is it direct supply or indirect supply? I didn’t understand. I don’t understand the diagram either – why are there two pipes connected to the heat exchanger? ? ?
First of all, thank you all for your enthusiastic responses! Secondly, since it was my first time working with a heat exchange station that included a boiler, I thought the rated operating pressure of the boiler was the same as the system’s operating pressure; lol, and that’s why I made this mistake. The boiler operated at a pressure of 0.4 MPa, and that resolved the problem{:1_90:} The heat exchanger is a vertical threaded-tube type, and there are two hot spring water pipes in the heat exchanger that weren’t shown – these pipes are used to heat the incoming 25°C hot spring water to 60°C before sending it to various hotels
It’s a direct supply system; there are 2 heat exchangers. I found it too troublesome to draw them all, so I only drew one of them. There are also two pipes related to the heat exchangers that haven’t been drawn in yet; P
I’ve learned that design work isn’t easy either.