CN210620446U

CN210620446U - Integrated water conservation unit

Info

Publication number: CN210620446U
Application number: CN201920870816.8U
Authority: CN
Inventors: 沈梦林; 熊园林; 蔡涵
Original assignee: Wuhan Xinda Innovation Water Treatment Technology Co ltd
Current assignee: Wuhan Xinda Innovation Water Treatment Technology Co ltd
Priority date: 2019-06-11
Filing date: 2019-06-11
Publication date: 2020-05-26
Anticipated expiration: 2029-06-11

Abstract

The utility model discloses an integrated water conservation unit, which comprises an expander, a vacuum degassing tank, a pressure stabilizing tank, a constant pressure pump and an expansion valve, wherein the expansion valve is arranged on a pressure relief exhaust pipe line connected with a central air-conditioning circulating water system; a liquid level sensor is arranged on the expander; the pressure stabilizing tank is arranged on a water outlet pipeline of the constant pressure pump; the pressure relief exhaust pipeline is also provided with a pressure relief valve and a pressure sensor, and the pressure relief valve is connected with a vacuum degassing tank; and the vacuum degassing tank is pumped by a constant pressure pump to generate vacuum, and water with low gas solubility after vacuum degassing is input into a pressure supplementing pipeline by the constant pressure pump. The utility model discloses a box integral structure, batch production equipment, compact structure saves space, and the scene only needs connecting power supply and user's pipeline can work.

Description

Integrated water conservation unit

Technical Field

The utility model relates to an integrated water conservation unit.

Background

The central air-conditioning circulating water system generally adopts a closed circulating system, and most closed circulating water systems have the problems of gas, water quality and pressure.

A large amount of bubbles can be carried in the running process of circulating water, and if a removing system is not added, air resistance is easy to generate, and the equipment such as a circulating water pump is damaged. Meanwhile, according to Henry's law, gas can be dissolved or separated out in water along with the change of the temperature and the pressure of the system, and a very complex gas problem is formed. In general, gas separation in fluids in pipelines is difficult and requires special equipment for disposal.

Oxygen in the air enters a system to form dissolved oxygen, and the dissolved oxygen and metal atoms of a pipeline and equipment are subjected to oxidation reaction to cause corrosion of the pipeline and the equipment, wherein the corrosion is an important hazard of a closed circulating water system, can cause the phenomena of yellow rust water and black water, and seriously affects the service life of the equipment.

The phenomenon of expansion with heat and contraction with cold exists in a closed circulating water system, and measures are needed to adjust the expansion and contraction of a system water body caused by temperature fluctuation. When the system leaks, emergency water supplement is required to be carried out on the system.

The traditional treatment method adopts a bag type expansion tank pre-filled with nitrogen to perform constant-pressure water supplement, the equipment realizes pressure stabilization and accommodates the system expansion amount by the expansion of a capsule, the available effective volume of the tank body is only 25-30% of the total volume of the tank body, the equipment is heavy, high in failure rate and high in manufacturing cost, and the tank body is a pressure container and needs to be periodically inflated; water treatment measures need to be taken: water quality treatment is carried out in a chemical adding mode or a physical mode; meanwhile, a special degassing device is adopted for degassing and deoxidizing.

The methods are high in cost, large in occupied area and troublesome in design and installation, and different devices are independently controlled, so that the system is not beneficial to being matched and coordinated to play the maximum role.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome and need set up level pressure moisturizing device, vacuum degassing device, automatic reagent feeding device, water quality monitoring device and intelligent control device respectively for solving central air conditioning circulating water system and have gas problem, quality of water problem and pressure problem among the prior art, with high costs, area is big, design and installation are troublesome, and different equipment adopt independent control, are unfavorable for the defect that system's cooperation harmonious performance is most significant, provide an integrated water conservation unit.

In order to solve the technical problem, the utility model provides a following technical scheme:

an integrated water conservation unit comprises an expander, a vacuum degassing tank, a pressure stabilizing tank, a constant pressure pump and an expansion valve, wherein the expansion valve is arranged on a pressure relief exhaust pipeline connected with a circulating water system of a central air conditioner; a liquid level sensor is arranged on the expander; the pressure stabilizing tank is arranged on a water outlet pipeline of the constant pressure pump;

the pressure relief exhaust pipeline is also provided with a pressure relief valve and a pressure sensor, and the pressure relief valve is connected with a vacuum degassing tank; and the air degassing tank is pumped by a constant pressure pump to generate vacuum, and the water without gas after vacuum degassing is input into a pressure supplementing pipeline by the constant pressure pump.

Furthermore, an overflow pipe communicated with the atmosphere is arranged on the expander, and an automatic exhaust valve is arranged at the top of the expander.

Furthermore, an automatic blowdown valve and a flow sensor are arranged on a water inlet pipeline of the expander.

Furthermore, a full-automatic dosing device is arranged on a water outlet pipeline of the expander and comprises a dosing tank, a stirrer and a metering pump.

Furthermore, still be provided with quality of water sensor and filter equipment on the pressure release blast pipe line, realize the ultra-clean filtration to the circulating water.

Furthermore, the expander can be made of polyethylene, carbon steel, stainless steel or glass fiber reinforced plastic.

Furthermore, a water inlet valve is arranged on a water inlet pipeline of the expander.

The device can provide R485 interface, BA interface, support Modbus communication protocol, GPRS remote control function etc. according to the user demand simultaneously, realizes operating personnel to equipment remote control's different demands.

The water replenishing function of the device can automatically identify whether the circulating system leaks a lot or not under the monitoring of the control unit, and immediately stop water replenishing.

The utility model discloses the beneficial effect who reaches is: the utility model discloses an integrated water conservation unit adopts box integral structure, collects level pressure moisturizing, vacuum degassing, automatic reagent feeding, water quality monitoring, intelligent control etc. and is multi-functional in an organic whole to the bypass mode inserts circulating water system. The pressure of the system is controlled by adopting a constant pressure pump and an expansion valve, and a normal pressure water tank is adopted as an expander to replace an unreliable nitrogen-filled bag type expansion tank. The method has the following specific advantages:

1. and (3) accurate pressure setting: the system can accurately control the pressure of the system, can ensure that the pressure of any point in the circulating pipeline is higher than the atmospheric pressure, prevent the air intake of the system, and can automatically adjust the expansion and contraction of the water body of the system caused by temperature fluctuation.

2. Efficient degassing: the mist spray vacuum degassing process can effectively remove free gas and dissolved gas in a circulating water system, prevent gas blockage and simultaneously remove dissolved oxygen in water. Can reduce the aerobic corrosion of the system and prolong the service life of the equipment.

3. Automatic water replenishing: the loss of the timely replenishing system caused by the dripping leakage can be automatically monitored when the system leaks a lot, and the control unit can immediately stop replenishing water.

4. Ultra-clean filtration: has an ultra-clean filtering function and can effectively remove suspended substances in the circulating water.

5. Intelligent dosing: the intelligent sensing water quality changes, and the automatic control charge device is handled the circulating water, prevents the scale deposit of system and corrodes.

6. Monitoring water quality: this product is equipped with water quality monitoring devices such as conductivity monitor, pH monitor, but real-time supervision quality of water changes to with signal transmission to automatic reagent feeding device, revise the medicine parameter.

7. GPRS wireless remote monitoring: the alarm information, the real-time parameters and the historical data of the equipment operation can be sent to related maintenance personnel or management personnel at the first time in a mode of mobile phone short messages, e-mails or web page browsing.

8. The box-type integrated structure is adopted, the factory assembly is realized, the structure is compact, the space is saved, and the field work can be realized only by connecting a power supply and a user pipeline.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic diagram of the operation of the present invention;

fig. 2 is a schematic view of the internal structure of the present invention;

FIG. 3 is a view from the direction B of FIG. 2;

fig. 4 is a view in the direction C of fig. 2.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Example 1

As shown in fig. 1, an integrated water conservation unit comprises an expander 1, a vacuum degassing tank 2, a pressure stabilizing tank 3, a constant pressure pump 4, a control system 5 and a full-automatic dosing device, wherein the full-automatic dosing device comprises a dosing tank 6, a stirrer 7 and a metering pump 8;

the expansion valve 14 is arranged on a pressure relief exhaust pipeline 22 of the central air conditioner, the output end of the pressure relief exhaust pipeline 22 is communicated with a water inlet pipeline 21 of the expander 1, the constant pressure pump 4 is arranged on a water outlet pipeline of the expander 1 through the control valve 13, and a water outlet pipeline of the constant pressure pump 4 is connected with the input end of a pressure compensation pipeline 16 of the central air conditioner; the expander 1 is provided with a liquid level sensor 17; the pressure stabilizing tank is arranged on a water outlet pipeline 23 of the constant pressure pump 4;

the pressure relief and exhaust pipeline 22 is also provided with a pressure sensor 9 and a pressure reducing valve 15, and the pressure reducing valve 15 is connected with a vacuum degassing tank 2; the vacuum degassing tank 2 is connected with a constant pressure pump 4, the vacuum degassing tank 2 is pumped by the constant pressure pump 4 to generate vacuum, and the water without gas after vacuum degassing is input into a pressure supplementing pipeline 16 by the constant pressure pump 4.

The expander 1 is provided with an overflow pipe communicated with the atmosphere, and the top of the expander 1 is provided with an automatic exhaust valve 18.

The water inlet pipeline of the expander 1 is provided with a water inlet valve 11, a flow sensor 12 and an automatic blowdown valve 19.

The pressure relief exhaust pipeline is also provided with a water quality sensor 10 and a filtering device 20.

The material of the expander can be polyethylene, carbon steel, stainless steel or glass fiber reinforced plastic.

The pressure sensor 9, the water quality sensor 10, the flow sensor 12 and the liquid level sensor 17 are all connected with the control unit 5; all the above components are integrated in one box structure.

The utility model discloses a theory of operation does:

1. and (3) constant pressure: the utility model discloses a constant pressure pump 4 and 14 control pressure of expansion valve, guarantee that constant pressure point pressure is invariable within the certain limit, when air conditioning heating system pump start operation, along with the system intensification, the water inflation, constant pressure point department pressure is also along with rising, when constant pressure point pressure reaches the setting value, expansion valve 14 on the pressure release exhaust pipe is opened, the inflation water gets into expander 1 in, when constant pressure point pressure is less than the setting value, constant pressure pump 4 starts, return the system with the water injection in expander 1, so open and stop repeatedly and make constant pressure point maintain the constant voltage.

2. Degassing: during degassing, high pressure circulating water containing gas is fed through a pressure reducing valve into the vacuum degassing tank 2, the gas in the water will escape (according to henry's law: dissolved gas in water will decrease when the temperature or pressure of the dissolved gas in water drops at a certain temperature and pressure) and exit the system through an automatic gas outlet valve 18, and the vacuum in the vacuum degassing tank 2 is generated by pumping with a constant pressure pump 4. The water without gas after vacuum degassing is supplemented to the system by the constant pressure pump 4, the degassing of the water is completed, and the steps are repeated.

3. Water replenishing: the water lost by the exhaust gases and by dripping can be monitored in real time by the control unit 5 and automatically replenished as soon as it falls below a set value. The amount of water in the expander 1 can be determined by the level sensor 17 and the control unit 5 will immediately stop the water supply if there is a large leakage in the circulation system.

4. Automatic dosing: the automatic dosing device consists of a dosing tank 6, a stirrer 7 and a metering pump 8, and can automatically dose the compound corrosion and scale inhibitor into the circulating system in proportion according to flow signals transmitted by a flow sensor 12 on a water supplementing pipeline, so that the corrosion and scaling of the circulating water system can be effectively prevented, and the good operation of the water system is ensured.

5. And (3) filtering: by adopting the spiral deslagging technology and the special spiral-structured filtering equipment 20, suspended matters, rusty matters and other impurities in water can be intercepted and discharged out of the system, and ultra-clean filtration is realized.

6. Monitoring water quality: this product is equipped with the water quality sensor 10 that has functions such as conductivity monitoring, pH monitoring, but real-time supervision quality of water changes to with signal transmission to automatic reagent feeding device, revise the medicine parameter.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The integrated water conservation unit is characterized by comprising an expander, a vacuum degassing tank, a pressure stabilizing tank, a constant pressure pump and an expansion valve, wherein the expansion valve is arranged on a pressure relief exhaust pipe line connected with a circulating water system of a central air conditioner; a liquid level sensor is arranged on the expander; the pressure stabilizing tank is arranged on a water outlet pipeline of the constant pressure pump;

2. The integrated water conservation unit of claim 1, wherein the expander is provided with an overflow pipe communicated with the atmosphere, and the top of the expander is provided with an automatic exhaust valve.

3. The integrated water conservation unit of claim 1, wherein the water inlet line of the expander is provided with an automatic blowdown valve and a flow sensor.

4. The integrated water conservation unit of claim 1, wherein a full-automatic dosing device is arranged on the water outlet pipeline of the expander, and the full-automatic dosing device comprises a dosing tank, a stirrer and a metering pump.

5. The integrated water conservation unit of claim 1, wherein a water quality sensor and a filtering device are further arranged on the pressure relief exhaust pipeline.

6. The integrated water conservation unit of claim 1, wherein the expander is made of polyethylene, carbon steel, stainless steel or glass fiber reinforced plastic.

7. The integrated water protection unit of claim 1, wherein a water inlet valve is disposed on a water inlet line of the expander.