CN211497241U

CN211497241U - Water-cooling water chilling unit integration transmission and distribution system

Info

Publication number: CN211497241U
Application number: CN202020049286.3U
Authority: CN
Inventors: 张跃
Original assignee: Broad Air Conditioning Co ltd
Current assignee: Broad Air Conditioning Co ltd
Priority date: 2020-01-10
Filing date: 2020-01-10
Publication date: 2020-09-15
Anticipated expiration: 2030-01-10

Abstract

An integrated transmission and distribution system of a water-cooled chiller comprises a chiller body, at least two transmission and distribution units, a pretreatment unit and a water replenishing unit; an air-conditioning water pipeline is formed between the evaporator of the unit body and the air-conditioning user side; a cooling water pipeline is formed between the absorber and/or the condenser of the unit body and the cooling tower; the pretreatment unit comprises an electrodialysis water treatment device, a water outlet pipeline of the water supplementing unit is connected with a water inlet of the electrodialysis water treatment device, and a water outlet of the electrodialysis water treatment device is respectively connected with a cooling tower and a water inlet of an air conditioner user side. The utility model can carry out desalination treatment on the water supplement of cooling water, cold and warm water or sanitary hot water, not only can reduce the hardness of water, but also can reduce the total dissolved solids in the water, and simultaneously slow down corrosion and scaling; on the other hand, the water quality entering the unit body can be disinfected, and the modes are all non-chemical modes, so that new environmental burden is not increased.

Description

Water-cooling water chilling unit integration transmission and distribution system

Technical Field

The utility model relates to a water-cooling water chilling unit, especially a water-cooling water chilling unit integration transmission and distribution system.

Background

The integrated transmission and distribution system of the water-cooling water chilling unit is a water system transmission and distribution integrated device matched with the water-cooling water chilling unit, and comprises an integrated device for respectively connecting and conveying cold water, warm water, hot water, cooling water, sanitary hot water and other water systems with a cooling tower and a cold and warm hot water terminal. The device integrates a pipeline filter, a check valve, a water pump (which can contain a frequency converter), an automatic drainage and water supplement device, a centralized control device and the like, and can also be provided with a resin water softener and an automatic dosing device, which are hereinafter referred to as an integrated transmission and distribution device.

Under the conditions that the water quality of the cooling water replenishing water is poor (mainly indicating that the total hardness is higher, the conductivity (total dissolved solids) is higher or harmful impurities (chloride ions, sulfate ions, ammonium ions, metasilicate, iron ions, sulfides and the like) are contained), and under the conditions that the water resource is lack and the concentration multiple of the cooling water is higher, the concentration of the total hardness, the conductivity and the harmful impurities exceeds the limit value of the relevant standard of a water chiller unit in the cooling water, so that the problems of scale deposit, corrosion and the like can be generated, the output and the energy efficiency of equipment are reduced, the service life is shortened, the cost of cleaning and maintaining a system is increased, and the like.

Therefore, the integrated transmission and distribution device is often required to be equipped with a resin water softener for softening the water supplemented by the cooling water, or an automatic doser for adding a water quality stabilizer (corrosion and scale inhibitor) to the circulating water. In addition, the running temperature and environment of the cooling water are favorable for the propagation of microorganisms, even pathogenic microorganisms such as legionella and the like, so that an automatic doser or a manual bactericidal algicide is also needed.

However, the resin water softener needs to be regenerated by salt, and the final result is salt discharge, so that a large amount of salt is actually discharged after long-term use, particularly when the water consumption of a large-scale water chilling unit is large, and the water body is salinized. However, resin water softeners do not reduce the total dissolved solids (conductivity) in the water and do not help to reduce corrosion, even soften water to promote corrosion. Therefore, the resin softened water is used as the cooling water, and a water quality stabilizer must be added. However, the corrosion and scale inhibitor and the sterilization algicide are discharged with the waste cooling water finally, so that the environmental burden is increased, and the corrosion and scale inhibitor and the sterilization algicide can not be used in areas with fragile natural environments or strict environmental protection requirements.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the defects in the prior art and providing a water-cooling water chilling unit integrated transmission and distribution system for water treatment by a non-chemical method.

The technical scheme of the utility model is that: an integrated transmission and distribution system of a water-cooled chiller comprises a chiller body, at least two transmission and distribution units, a pretreatment unit and a water replenishing unit; an air-conditioning water pipeline is formed between the evaporator of the unit body and the air-conditioning user side; a cooling water pipeline is formed between the absorber and/or the condenser of the unit body and the cooling tower; the pretreatment unit comprises an electrodialysis water treatment device, a water outlet pipeline of the water supplementing unit is connected with a water inlet of the electrodialysis water treatment device, and a water outlet of the electrodialysis water treatment device is respectively connected with a cooling tower and a water inlet of an air conditioner user side.

Furthermore, the water outlet of the electrodialysis water treatment device is also connected with a water heater of the unit body through a transmission and distribution unit, and a water outlet pipeline of the water heater is connected with a hot water user side or a water storage container.

Furthermore, the water outlet of the water supplementing unit is connected with the water heater of the unit body through the transmission and distribution unit.

Further, the pretreatment unit also comprises an ozone generator, and the ozone generator is connected to an air-conditioning water pipeline between the evaporator and an air-conditioning user side, or the ozone generator is connected to a cooling water pipeline between the absorber and/or the condenser and the cooling tower.

Further, the transmission and distribution unit comprises a filter, a water pump and a check valve which are sequentially connected through pipelines.

Furthermore, each part of the transmission and distribution unit is made of corrosion-resistant materials.

Furthermore, a water outlet of the cooling tower is connected with a water inlet of an absorber and/or a condenser of the unit body through a transmission and distribution unit; and the air conditioner user side is connected with a water inlet of an evaporator of the unit body through the transmission and distribution unit.

Furthermore, the electrodialysis water treatment device is an electrodeless water electrodialysis water treatment device.

Furthermore, the electrodialysis water treatment device is provided with a concentrated water discharge port.

Furthermore, a sewage draining outlet is arranged on the cooling tower.

Furthermore, a hot water replenishing valve group is arranged on an output pipeline of the water replenishing unit, and raw water or desalted water subjected to electrodialysis is directly replenished into the water heater by controlling the hot water replenishing valve group.

The utility model has the advantages that: on one hand, the desalting treatment can be carried out on the supplemented water of cooling water, cold and warm water or sanitary hot water, so that not only can the hardness of the water be reduced, but also the total dissolved solids (conductivity) in the water can be reduced, therefore, the corrosion and scaling can be simultaneously relieved, the recovery rate of the water is more than 95%, and the operation cost is lower; on the other hand, the water quality entering the unit body can be disinfected, and the modes are all non-chemical modes, so that new environmental burden is not increased.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Detailed Description

The invention will be described in further detail with reference to the drawings and specific examples.

As shown in fig. 1: an integrated transmission and distribution system of a water-cooling water chilling unit comprises a unit body, a transmission and distribution unit, a pretreatment unit and a water supplementing unit, wherein the pretreatment unit comprises an electrodialysis water treatment device and an ozone generator, and the transmission and distribution unit comprises a filter, a water pump and a check valve which are sequentially connected through pipelines; the unit body comprises an evaporator, a condenser, an absorber and a water heater. An air-conditioning water pipeline is formed between the evaporator of the unit body and the air-conditioning user side; and a cooling water pipeline is formed between the absorber and/or the condenser of the unit body and the cooling tower.

The concrete connection mode of each structure is as follows: the water outlet of the cooling tower is connected with the water inlet of the absorber and the water inlet of the condenser of the unit body through the first transmission and distribution unit 1#, and the water outlets of the absorber and the condenser are connected with the water inlet of the cooling tower through a valve; the air conditioner user side is connected with the water inlet of the evaporator of the unit body through the second transmission and distribution unit No. 2, and the water outlet of the evaporator is connected with the water return port of the air conditioner user side through a valve. The water outlet of the electrodialysis water treatment device is connected with three branches, the first branch is connected with the water inlet of the cooling tower through a valve, and the second branch is connected with the air-conditioning user side through a valve; the third branch is connected with the water heater of the unit body through a valve and a third transmission and distribution unit No. 3, and a water outlet of the water heater is connected with a hot water user side or a water storage container. The water outlet of the water replenishing unit comprises two branches, one branch is connected with the third transmission and distribution unit No. 3 through a valve, and the other branch is connected with the water inlet of the electrodialysis water treatment device through a valve; the electrodialysis water treatment device is also provided with a concentrated water discharge port for discharging electrodialysis concentrated water, wherein substances come from the water replenishing body and no medicament is added, so that the environmental burden is not increased. The cooling tower is provided with a drain outlet for discharging sewage in the cooling tower, wherein substances are from the water replenishing and the surrounding environment, and no additional medicament is added, so that the environmental burden is not increased. The output port of the ozone generator is connected with two branches, one branch is connected to a pipeline between the water outlet of the cooling tower and the water inlets of the unit body absorber and the condenser, and the other branch is connected to a pipeline between the water outlet of the air conditioner user side and the water inlet of the unit body evaporator.

In the embodiment, the electrodialysis water treatment device is adopted to replace the existing resin softener, water of the water replenishing unit is subjected to electrodialysis treatment and then enters the cooling tower, the air conditioner user side and the water heater of the unit body, and the water replenishing of cooling water, cold and warm water or sanitary hot water can be subjected to desalination treatment, so that the hardness of the water can be reduced, and the total dissolved solids (conductivity) in the water can also be reduced, therefore, the corrosion and scaling can be simultaneously relieved, the water recovery rate is more than 95%, and the operation cost is lower. Preferably, in order to reduce the polar water which is generally discarded by the electrodialysis water treatment device, the embodiment adopts an electrodeless hydroelectric dialysis water treatment device. In addition, the electrodialysis water treatment device adopts a frequent electrode reversing technology, can prevent the exchange membrane and the electrode from scaling, prolongs the service life, reduces the cleaning work and can also reduce the use of maintenance agents.

In the embodiment, the ozone generator is used for replacing the function of adding the bactericide by the automatic medicine adding device, and the ozone generator is mainly connected to cooling water circulating water and cold-warm water circulating water to regularly disinfect the water. Since ozone comes from oxygen in the air and can be decomposed into oxygen, it does not increase the burden on the environment. In addition, the ozone generator can also be used for disinfecting a sanitary hot water pipeline, but is not suitable for disinfecting the sanitary hot water, because the sanitary hot water is generally tap water, the sanitary hot water has residual chlorine for sterilization, and the temperature of the sanitary hot water is higher, so that pathogenic bacteria can not be propagated. It will be appreciated that the ozone generator may be accessible from any location of the respective water circulation system. The present embodiment preferably connects the ozone generator between the first delivery and distribution unit # 1 and the water inlet of the absorber, the condenser and also between the second delivery and distribution unit # 2 and the water inlet of the evaporator.

The transmission and distribution unit of this embodiment is connected integratively between, but whole transport and transportation, and make the structure compacter. Wherein the filter is used for filtering water quality, and the check valve can effectively prevent water flow backflushing and water hammer noise. Two water pumps are preferably adopted, one is used as a main water pump, the other is used as a standby water pump, and when the model is selected, the system can be accurately matched, so that the flow and the lift are closely matched; through the combination of the double pumps, the running mode can be automatically adjusted according to the load condition of the tail end, and the single/double pumps are switched to realize energy-saving running. In addition, through the transmission and distribution unit, the water quality can be improved, and the heat exchange pipe is prevented from being polluted or blocked. In this embodiment, each component of the transmission and distribution unit is made of corrosion-resistant materials such as stainless steel, and the corrosion-resistant function of the corrosion-resistant and scale-inhibiting agent added by the automatic dosing device is replaced.

The working principle of the embodiment is as follows:

when the unit is refrigerating: the water supplement with lower temperature in one branch of the water supplement unit enters the electrodialysis water treatment device through a valve for water quality desalination treatment, the hardness of water is reduced, the treated water is divided into three branches, the treated water in the first branch enters the cooling tower through the valve, the cooling water of the cooling tower enters the absorber and the condenser of the unit body after being filtered by the first transmission and distribution unit 1# for heat exchange, meanwhile, the water outlets of the absorber and the condenser are connected with the cooling tower through the valve, and therefore the heat exchange and the circulation of the cooling water between the unit body and the cooling tower are achieved; the treated water in the second branch enters the air conditioner user side through a valve, cold water is subjected to heat exchange and circulation between the evaporator of the unit body and the water return end of the air conditioner user side for refrigeration, and the air conditioner water at the air conditioner user side enters the evaporator after being filtered by the second transmission and distribution unit 2# to realize circulation; wherein, the cooling water pipeline between the unit body and the cooling tower and the air-conditioning water pipeline between the air-conditioning user side and the evaporator are connected with an ozone generator for sterilizing the water quality entering the unit body.

When the unit heats: and the water supplement at a lower temperature in the other branch of the water supplement unit and the treated water in the third branch of the electrodialysis water treatment device enter the third transmission and distribution unit No. 3 through valves for filtration, the filtered water enters a heater of the unit body for heating, and the heated hot water enters a hot water user side for heating or sanitary water or enters a water storage container for storage. It can be said that, be equipped with hot water moisturizing valves on the output pipeline of moisturizing unit, can select directly to supply raw water or supply the desalinized water through the electrodialysis. When the hardness of the water-supplemented raw water is low, the dissolved minerals are few, or the requirements of hot water on the hardness or the dissolved minerals in the water are not strict, or the consumption of the hot water is too large, the raw water can be directly supplemented to the water heater through the third transmission and distribution unit 3# by controlling the hot water supplementing valve group, or the raw water and the desalted water are supplemented in a mixed mode.

To sum up, the utility model can carry out desalination treatment on the water supplement of cooling water, cold and warm water or sanitary hot water, not only can reduce the hardness of water, but also can reduce the total dissolved solids (conductivity) in water, thereby slowing down corrosion and scaling at the same time, and the recovery rate of water is more than 95%, and the operation cost is lower; on the other hand, the water quality entering the unit body can be disinfected, and the modes are all non-chemical modes, so that new environmental burden is not increased, and chemical treatment on the discharged wastewater is not needed.

Claims

1. An integrated transmission and distribution system of a water-cooled chiller comprises a chiller body, at least two transmission and distribution units, a pretreatment unit and a water replenishing unit; an air-conditioning water pipeline is formed between the evaporator of the unit body and the air-conditioning user side; a cooling water pipeline is formed between the absorber and/or the condenser of the unit body and the cooling tower; the water replenishing device is characterized in that the pretreatment unit comprises an electrodialysis water treatment device, a water outlet pipeline of the water replenishing unit is connected with a water inlet of the electrodialysis water treatment device, and a water outlet of the electrodialysis water treatment device is respectively connected with a cooling tower and a water inlet of an air conditioner user side.

2. The integrated transmission and distribution system of the water-cooled chiller according to claim 1, wherein the water outlet of the electrodialysis water treatment device is connected with a water heater of the chiller body through a transmission and distribution unit, and a water outlet pipeline of the water heater is connected with a hot water user side or a water storage container.

3. The integrated transmission and distribution system of the water-cooled chiller according to claim 1, wherein the water outlet of the water replenishing unit is connected with the water heater of the chiller body through the transmission and distribution unit.

4. The integrated transmission and distribution system of water-cooled chiller units according to claim 1, 2 or 3, wherein said pretreatment unit further comprises an ozone generator connected to the air-conditioning water line between the evaporator and the air-conditioning user side, or connected to the cooling water line between the absorber and/or the condenser and the cooling tower.

5. The integrated transmission and distribution system of the water-cooled chiller according to claim 1, 2 or 3, characterized in that the transmission and distribution unit comprises a filter, a water pump and a check valve which are connected in sequence through pipelines.

6. The integrated transmission and distribution system of the water-cooled chiller according to claim 1, 2 or 3, characterized in that each component of the transmission and distribution unit is made of corrosion-resistant material.

7. The integrated transmission and distribution system of the water-cooled chiller according to claim 1, 2 or 3, characterized in that the water outlet of the cooling tower is connected with the water inlet of the absorber and/or the condenser of the chiller body through the transmission and distribution unit; and the air conditioner user side is connected with a water inlet of an evaporator of the unit body through the transmission and distribution unit.

8. The integrated transmission and distribution system of the water-cooled chiller according to claim 1, 2 or 3, characterized in that the electrodialysis water treatment device is an electrodeless hydroelectric dialysis water treatment device.

9. The water-cooled chiller integrated transmission and distribution system of claim 1, 2 or 3, wherein the electrodialysis water treatment device is provided with a concentrated water discharge port; and a sewage draining outlet is arranged on the cooling tower.

10. The integrated transmission and distribution system of the water-cooled chiller according to claim 1, 2 or 3, wherein the output pipeline of the water supplementing unit is provided with a hot water supplementing valve set, and raw water is directly supplemented into the water heater or desalted water after electrodialysis is supplemented into the water heater by controlling the hot water supplementing valve set.