Non-negative pressure hot water direct supply unit

Abstract

The invention discloses a non-negative pressure hot water direct supply unit, and belongs to the field of hot water direct supply devices. The non-negative pressure hot water direct supply unit comprises a buffer tank (5) and a control cabinet (11), wherein a municipal heat supply pipeline (1) is connected with the buffer tank (5), an outlet of the buffer tank (5) is simultaneously connected with three water supply pipelines in parallel, and the three water supply pipelines are simultaneously connected with high area users (29) and low area users (20). The non-negative pressure hot water direct supply unit is characterized in that a backflow cabin (27) which is connected with the high area users (29) and the low area users (20) is arranged, a pressure control valve (25) is arranged on the backflow cabin (27), an outlet of the pressure control valve (25) is connected with a three-way pipe (23), the other two openings of the three-way pipe (23) are connected with a first bypass pipe (19) and a second bypass pipe (30) in series respectively, and the first bypass pipe (19) and the second bypass pipe (30) are connected to two boosting pipelines in parallel respectively. The non-negative pressure hot water direct supply unit is reliable in performance, can uniformly collect hot water in the pressure relieving process, and has a good blocking resistance effect at the same time.

Description

technical field [0001] A non-negative pressure hot water direct supply unit belongs to the field of hot water direct supply equipment. Specifically relates to a non-negative pressure hot water direct supply unit capable of uniformly collecting hot water during pressure relief and having good anti-blocking effect. Background technique [0002] At present, with the increasing number of high-rise buildings, the heating problem of high-rise buildings is an urgent problem to be solved. In the existing non-negative pressure hot water direct supply unit, there are mainly the following shortcomings: 1. The safety valve or pressure relief valve installed on the pipeline and the tank cannot be collected uniformly when the pressure is released. , because the medium in the pipeline is hot water, when the pressure is released, the hot water is released irregularly. On the one hand, it is easy to cause inconvenience in production, and on the other hand, it is a great waste of resources. ...

AI Technical Summary

Problems solved by technology

In the existing non-negative pressure hot water direct supply unit, there are mainly the following shortcomings: 1. The safety valve or pressure relief valve installed on the pipeline and the tank cannot be collected uniformly when the pressure is released. , since the medium in the pipeline is hot water, when the pressure is released, the hot water is released irregularly. On the one hand, it is easy to cause inconvenience in production, and on the other hand, it is a great waste of resources.

2. The pipeline is easy to block

3. After the hot water has completed the heat exchange between the users in the high area and the users in the low area, the hot water is directly returned to the municipal heating source, which is also easy to cause blockage at the municipal heat source

4. The safety factor is low, and there are not enough safety devices in the pipeline, which can easily cause safety accidents

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