CN218713582U

CN218713582U - Medical treatment pure water constant voltage supply control system

Info

Publication number: CN218713582U
Application number: CN202222913950.6U
Authority: CN
Inventors: 周志军; 王亚娜; 陆雨晨; 周榜豪; 冯瑛
Original assignee: Hangzhou Yongjieda Purification Technology Co ltd
Current assignee: Hangzhou Yongjieda Purification Technology Co ltd
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-03-24
Anticipated expiration: 2032-10-31

Abstract

The utility model relates to a medical treatment pure water constant voltage supply control system is applied to medical pure water equipment field. The system comprises a pure water supply loop and a control device thereof, wherein the pure water supply loop comprises a pure water loop which starts with a water inlet electric valve, is sequentially connected with a pure water tank, a water supply pump, a water using valve and a water return electric valve and is finally connected with the pure water tank; the system also comprises a return water pressure transmitter and a return water flow sensor which are arranged at the return water section of the pure water tank; the control device comprises a PLC controller, and a water inlet electric valve, a water supply pump, a water return electric valve, a water return pressure transmitter and a water return flow sensor which are electrically connected with the PLC controller. The product utilizes the variable-frequency constant-pressure constant-flow technology to stabilize the water quantity and pressure of each water consumption point and relieve the problem of insufficient water supply at a far point caused by long pipeline supply.

Description

Medical treatment pure water constant voltage supply control system

Technical Field

The utility model relates to a medical treatment pure water constant voltage supply control system is applied to medical pure water equipment field.

Background

With the continuous improvement of the medical guarantee system and the comprehensive implementation of the medical insurance in the countryside in China, the number of newly built and expanded hospitals is greatly increased, and novel water treatment equipment is urgently needed. A central pure water supply system of a hospital as a new medical water treatment apparatus is an important construction project of a newly built hospital in recent years. Some early hospital pure water systems had unreasonable designs, and equipment quality was not closed, and the conduit line is not normal, and the stagnant water is many, needs frequent chemical disinfection, has serious potential safety hazard. In recent years, a central pure water system of a hospital has a relatively consistent overall design scheme: comprises a pure water preparation system and a pure water circulating and conveying system. The pure water preparation system mainly produces three types of medical water: the first-level reverse osmosis pure water for most departments, the hemodialysis water based on the second-level reverse osmosis, and the ultrapure water prepared by mixed bed resin or EDI on the basis of the pure water. And the pure water circulating and conveying system conveys the pure water with different water qualities to corresponding departments through 5-6 stainless steel pure water circulating pipelines.

The central pure water system of the hospital changes the traditional mode that different departments are independently equipped with water making equipment in the past, effectively improves the water quality and water quantity safety guarantee level of medical water, reduces medical risks and reduces the management and operation cost of the hospital. However, the total scale of the pure water conveying pipeline is objectively and remarkably increased in the novel hospital pure water system, and one hospital usually needs 5000-10000 meters, which increases the risk of secondary pollution of medical water. Meanwhile, a hospital generally uses a booster pump to convey pure water in a pipeline, and if a plurality of water using points in the front are used at the same time and the pressure of a water conveying pipeline in the back is reduced under the condition that the conveying pipeline is longer, the water supply of the water using points in the back is insufficient, and even water cannot be discharged. The reduction of the backwater pressure and the flow also causes the retention of the pure water in the water conveying pipeline, increases the probability of the proliferation of bacteria in the pipeline and causes the reduction of the quality of the pure water.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the problems existing in the prior art and design a novel medical pure water constant-pressure supply control system.

The utility model adopts the technical scheme as follows:

a medical pure water constant pressure supply control system comprises a pure water supply loop and a pure water supply control device, wherein the pure water supply loop comprises a pure water loop which is started by a water inlet electric valve, sequentially connected with a pure water tank, a water supply pump, a water using valve and a water return electric valve and finally connected with the pure water tank;

the system also comprises a return water pressure transmitter and a return water flow sensor which are arranged at the return water section of the pure water tank;

the control device comprises a PLC controller, and a water inlet electric valve, a water supply pump, a water return electric valve, a water return pressure transmitter and a water return flow sensor which are electrically connected with the PLC controller.

Preferably, a liquid level sensor electrically connected with the PLC is installed in the pure water tank, a water inlet electric valve and a water return electric valve are connected to the upper part of the pure water tank, and a water supply pump is connected to the lower part of the pure water tank.

Preferably, the water supply pump is formed by connecting a variable frequency pump and a power frequency pump in parallel.

Preferably, the variable frequency pump and the industrial frequency pump are respectively connected with a check valve and a manual valve in series.

Preferably, an ultraviolet sterilizer and a terminal filter are connected in series between the water supply pump and the water using valve, and the ultraviolet sterilizer is electrically connected with the PLC.

Preferably, the water inlet end of the water valve is provided with a water inlet pressure gauge.

Preferably, a water return pressure gauge is arranged at a water return section of the pure water tank.

Preferably, the water return section of the pure water tank is provided with a conductivity meter electrically connected with the PLC.

Preferably, the water return section of the pure water tank is provided with a water outlet electric valve electrically connected with the PLC.

Preferably, the control device further comprises a touch screen electrically connected with the PLC controller.

Compared with the prior art, the product has the following advantages:

1. the product utilizes the variable-frequency constant-pressure constant-flow technology to stabilize the water quantity and pressure of each water consumption point and relieve the problem of insufficient water supply at a remote point caused by long pipeline supply;

2. the return water flow is controlled to be in a moderate level, so that the growth environment of bacteria can be damaged, the growth of the bacteria can be inhibited, and the pollution risk is reduced;

3. set up ultraviolet sterilizer and terminal filter on water spot front end pipeline, avoid guaranteeing the normal use of water spot because of the pure water quality of water decline after the long distance pipeline transportation.

Drawings

In order to illustrate the embodiments of the present invention or the solutions in the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive work.

Fig. 1 is a schematic overall structure diagram of the embodiment.

Fig. 2 is an electrical wiring diagram of the PLC controller in the embodiment.

FIG. 3 is a diagram showing electrical connection of a main circuit of the water supply pump in the embodiment.

Fig. 4 is an electrical wiring diagram of the main circuit of the electric valve and the ultraviolet sterilizer in the embodiment.

FIG. 5 is an electrical connection diagram of the control circuit of the water supply pump, the electric valve and the UV sterilizer in the embodiment.

Description of reference numerals: 1-water inlet electric valve; 2-pure water tank; 3-a liquid level sensor; 4-a power frequency pump; 5-variable frequency pump; 6-check valve; 7-manual valve; 8-ultraviolet sterilizer; 9-a terminal filter; 10-water inlet pressure gauge; 11-using a water valve; 12-a backwater flow sensor; 13-a conductivity meter; 14-a backwater pressure transmitter; 15-backwater pressure gauge; 16-water return electric valve; 17-water outlet electric valve; 18-a PLC controller; 19-touch screen.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

The first embodiment is as follows:

as shown in fig. 1-5, the present embodiment is a medical pure water constant pressure supply control system, which comprises a pure water supply loop and a control device thereof, wherein the pure water supply loop comprises a pure water loop starting with a water inlet electric valve 1 and sequentially connecting a pure water tank 2, a water supply pump, a water using valve 11, a water return electric valve 16 and finally connecting the pure water tank 2;

the device further comprises a return water pressure transmitter 14 and a return water flow sensor 12 which are arranged at the return water section of the pure water tank 2;

the control device of the embodiment comprises a PLC (programmable logic controller) 18, and a water inlet electric valve 1, a water supply pump, a water return electric valve 16, a water return pressure transmitter 14 and a water return flow sensor 12 which are electrically connected with the PLC. The control device also comprises a touch screen 19 electrically connected with the PLC 18, and the opening and closing can be controlled by the operation of the touch screen 19, and relevant numerical values can be displayed.

In the present embodiment, a liquid level sensor 3 electrically connected to a PLC controller 18 is installed in a pure water tank 2, a water inlet electric valve 1 and a water return electric valve 16 are connected to the upper side, and a water supply pump is connected to the lower side. The water supply pump is composed of a variable frequency pump 5 and a power frequency pump 4 which are connected in parallel, and the variable frequency pump 5 and the power frequency pump 4 are respectively connected with a check valve 6 and a manual valve 7 in series. Further, an ultraviolet sterilizer 8 and a terminal filter 9 are connected in series between the water supply pump and the water valve 11, and the ultraviolet sterilizer 8 is electrically connected to the PLC controller 18.

The water inlet end of the water valve 11 of the embodiment is provided with a water inlet pressure gauge 10. The water return section of the pure water tank 2 is provided with a water return pressure gauge 15. The water return section of the pure water tank 2 is provided with a conductivity meter 13 which is electrically connected with the PLC 18. The water return section of the pure water tank 2 is provided with a water outlet electric valve 17 which is electrically connected with a PLC 18.

The working process of the product is as follows:

the user operates through the touch screen 19, and the PLC 18 controls to open the water inlet electric valve 1 to supplement water to the pure water tank 2. When the liquid level sensor 3 in the pure water tank 2 detects that the liquid level of the pure water exceeds the middle liquid level, the PLC 18 controls the opening of the variable frequency pump 5 and the water return electric valve 16, closes the water outlet electric valve 17, and sends the pure water in the pure water tank 2 into the pipe network. The pure water is treated by the ultraviolet sterilizer 8 and the terminal filter 9 in sequence and then can be used by the water valve 11 (namely, the water point), and the unused pure water can enter the pure water tank 2 again through the water return electric valve 16 for recycling. Through the control of the backwater pressure transmitter 14 and the backwater flow sensor 12 (after the PLC 18 receives the data of the backwater pressure transmitter 14 and the backwater flow sensor 12, the working frequency of the variable frequency pump 5 can be automatically adjusted), the pressure and the flow of the pipe network can be automatically stabilized at set values, and the stable water supply and the higher backwater flow of the water valve 11 are ensured; however, if the opened variable frequency pump 5 runs at full frequency, the return water pressure and flow still cannot reach the set values, the PLC 18 automatically controls the power frequency pump 4 to be opened, and the variable frequency pump 5 runs in a frequency reduction mode until the return water pressure and flow of the pipe network reach the set values. During the period, the water inlet pressure gauge 10 and the water return pressure gauge 15 can be checked manually, and can be compared with pressure numbers on the touch screen 19 to judge the pressure error range. The conductivity meter 13 detects the conductivity value of the pure water in the pipe network in real time and transmits data to the PLC, if the backwater conductivity of the pipe network exceeds a set value, the PLC controller 18 controls the backwater electric valve 16 to be automatically closed, the water outlet electric valve 17 is opened, the pure water in the pipe network is flushed and discharged until the backwater conductivity is reduced to the set value, the backwater electric valve 16 is opened again, and the water outlet electric valve 17 is closed.

The utility model discloses utilize frequency conversion constant voltage constant current technique, stabilize the flow and the water pressure of each water point, alleviate the problem of the long more little insufficient water supply who brings because of the pipeline supply to maintain moderate return water flow, restrain the formation of bacterial colony in the pipeline. Set up ultraviolet sterilizer and terminal filter on water spot front end pipeline, avoid guaranteeing the normal use of water spot because of the pure water quality of water decline after the long distance pipeline transportation.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a medical treatment pure water constant voltage supply control system, includes a set of pure water supply circuit and controlling means thereof, its characterized in that: the pure water supply loop comprises a pure water loop which is started by a water inlet electric valve, sequentially connected with a pure water tank, a water supply pump, a water using valve and a water return electric valve and finally connected back to the pure water tank;

2. The constant-pressure supply control system of pure water for medical treatment according to claim 1, characterized in that: and a liquid level sensor electrically connected with the PLC is arranged in the pure water tank, a water inlet electric valve and a water return electric valve are connected above the pure water tank, and a water supply pump is connected below the pure water tank.

3. The constant-pressure supply control system of pure water for medical treatment according to claim 1, characterized in that: the water supply pump is formed by connecting a variable frequency pump and a power frequency pump in parallel.

4. The constant pressure supply control system of pure water for medical treatment according to claim 3, characterized in that: the variable frequency pump and the power frequency pump are respectively connected with the check valve and the manual valve in series.

5. The constant-pressure supply control system of pure water for medical treatment according to claim 1, characterized in that: an ultraviolet sterilizer and a terminal filter are connected in series between the water supply pump and the water using valve, and the ultraviolet sterilizer is electrically connected with the PLC.

6. The constant-pressure supply control system of pure water for medical treatment according to claim 1, characterized in that: and a water inlet pressure gauge is arranged at the water inlet end of the water valve.

7. The constant pressure supply control system of pure water for medical treatment according to claim 1, characterized in that: and a water return pressure gauge is arranged at the water return section of the pure water tank.

8. The constant-pressure supply control system of pure water for medical treatment according to claim 1, characterized in that: and the water return section of the pure water tank is provided with a conductivity meter electrically connected with the PLC.

9. The constant-pressure supply control system of pure water for medical treatment according to claim 1, characterized in that: and the water return section of the pure water tank is provided with a water outlet electric valve which is electrically connected with the PLC.

10. The constant-pressure supply control system of pure water for medical treatment according to claim 1, characterized in that: the control device further comprises a touch screen electrically connected with the PLC.