Secondary side water supplementing device for closed heat exchange system

Abstract

The invention discloses a secondary side water supplementing device for a closed heat exchange system. The water supplementing device comprises a heat exchanger, a primary net water supply pipe, a primary net water returning pipe, a secondary net water supply pipe, a secondary net water returning pipe and a water tank, wherein the primary net water supply pipe, the primary net water returning pipe, the secondary net water supply pipe and the secondary net water returning pipe are communicated with the heat exchanger; the primary net water returning pipe is also communicated with a pre-heat exchanger; the secondary net water returning pipe is also communicated with the pre-heat exchanger through a pre-heating pump; a part of primary net returning water which is preprocessed by the pre-heat exchanger flows into the water tank; and the water tank is used for connecting a part of the primary net returning water which meets requirements with the secondary net water supply pipe through a water supplementing pipe. A secondary net is supplemented with softened water in a primary net, the device not only meets a basic water supplementing function, but also is simple in internal structure, equipment is more compact, the occupied area and the use space of a heat exchange station are reduced, the initial cost and the operation expense are saved, and repeated arrangement of the equipment is reduced; and at the same time, the workloads for maintaining the equipment, preparing softened water and testing water quality are reduced, labor power is saved, the construction, the installation and the post maintenance are very convenient.

Description

technical field [0001] The invention relates to the technical fields of HVAC and thermal energy power, in particular to a water supply device for replenishing water in a primary network to a secondary network in a closed heat exchange system. Background technique [0002] As we all know, heating system or air conditioning water system must replenish water. The specification requires that as long as there is a winter hot water system, the supplementary water must be softened. At present, the common replenishment methods include expansion tank replenishment, replenishment pump replenishment, etc. [0003] The above water replenishment methods all require salt storage tanks, water softening devices, soft water tanks, etc., through the steps of work, backwashing, regeneration, replacement, quick flushing, etc. to produce softened water, and then replenish water to the system. The structure is complex and requires regular It is inconvenient to maintain and manage the water qual...

AI Technical Summary

Problems solved by technology

[0003] The above water replenishment methods all require salt storage tanks, water softening devices, soft water tanks, etc., through the steps of work, backwashing, regeneration, replacement, quick flushing, etc. to produce softened water, and then replenish water to the system. The structure is complex and requires regular Water quality testing, inconvenient maintenance and management, large floor area and large initial investment

In the general system, the demineralized water of the primary net and the secondary net are treated separately, especially in the small-scale system with large usage, the preparation of demineralized water is extremely inconvenient

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