Injection water distribution system

Abstract

The utility model discloses an injection water distribution system which comprises a water storage tank, a water supply branch, a water return branch and a discharge branch, the water storage tank is provided with a liquid inlet, a liquid return port and a liquid discharge port, the water storage tank is further connected with a first temperature transmitter and a first pressure transmitter, and a water pump is connected in series in the water supply branch. The water pump is in electric control signal connection with the first temperature transmitter and the first pressure transmitter; a heat exchanger and a second valve are connected in series in the water return branch, the discharge branch is provided with a discharge pipeline communicated with the water return pipeline between the second valve and the heat exchanger, a third valve is connected in series in the discharge pipeline, the discharge branch is further provided with a conductometer, and the conductometer is in electric control signal connection with the second valve and the third valve. The water quality of the return water is detected through a conductometer in the discharge branch, when the detection value does not reach the standard, the opening and closing states of the second valve and the third valve are controlled, the return water is directly discharged, and the return water is prevented from entering the water storage tank again.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of water for injection, especially to a water for injection distribution system. BACKGROUND

[0002] Water for injection refers to water that meets the requirements of Chinese Pharmacopoeia under the item of water for injection, also known as heavy distilled water, usually prepared by distillation method, reverse osmosis method or filter method, etc. These methods can effectively remove impurities in raw water, such as suspended solids, colloids, bacteria, viruses, pyrogens, etc.

[0003] A patent named a high-temperature water for injection circulating distribution system is disclosed in Chinese patent database, application number CN201821387574.9, application date 2018.08.24. The high-temperature water for injection circulating distribution system comprises a water for injection storage tank, a water supply pipeline is connected to the water outlet end of the water for injection storage tank, a sanitary pump and a heat exchanger are sequentially arranged on the water supply pipeline, the water outlet end of the heat exchanger is connected with a water use point, and the water use point is connected with the water for injection storage tank through a backwater pipeline.

[0004] The deficiency of the above-mentioned patent technical solution is that, during the long-term operation of the equipment, the water for injection is at risk of being contaminated, leading to substandard water quality, which not only reduces product quality, but also adversely affects the accuracy and safety of medical activities, and the above-mentioned distribution system cannot effectively respond to the situation that the water quality is contaminated. UTILITY MODEL CONTENT

[0005] The embodiment of the present application provides a water for injection distribution system, which can discharge the contaminated water for injection, so as to avoid the contaminated water for injection from entering the distribution system again.

[0006] The embodiment of the present application provides a water for injection distribution system, which comprises:

[0007] The water storage tank has a liquid inlet, a liquid return port and a liquid outlet, the air port of the water storage tank is connected with an electric heating breather through a first valve, and the water storage tank is further connected with a first temperature transmitter and a first pressure transmitter;

[0008] The water supply branch has a water supply pipeline that communicates the liquid outlet with a water use point, a water pump is connected in series in the water supply pipeline, the water pump is used to pump the water for injection in the water storage tank into the water use point, and the water pump is electrically connected with the first temperature transmitter and the first pressure transmitter;

[0009] The backwater branch has a backwater pipeline that communicates the water use point with the liquid return port, and a heat exchanger and a second valve are connected in series in the backwater pipeline;

[0010] The outer discharge branch has an outer discharge pipeline in communication with the return water pipeline between the second valve and the heat exchanger, the third valve is connected in series in the outer discharge pipeline, and the electric conductivity instrument is connected to the return water pipeline between the heat exchanger and the outer discharge pipeline, and the electric conductivity instrument is connected to the electric control signals of the second valve and the third valve.

[0011] The above embodiment has the beneficial effect that the water supply branch and the return water branch are used to realize the water supply and return water functions of the injection water, the electric conductivity instrument in the outer discharge branch is used to detect the return water quality, when the detection value is not up to the standard, the opening and closing states of the second valve and the third valve are controlled, and the return water can be directly discharged, so that the return water is prevented from entering the water storage tank again.

[0012] On the basis of the above embodiment, the embodiment of the application can also be improved as follows:

[0013] In one of the embodiments of the application, the return water pipeline between the water using point and the heat exchanger is connected with a second temperature transmitter, the first heat exchange port of the heat exchanger is connected with a steam entering branch, and the second heat exchange port is connected with a condensed water discharge branch, and the second temperature transmitter is connected to the electric control signals of the valve in the steam entering branch. The beneficial effect of this step is that the working state of the heat exchanger is automatically controlled by the second temperature transmitter according to the return water temperature.

[0014] In one of the embodiments of the application, the steam entering branch has a fourth valve and a filter connected in series, and the second temperature transmitter is connected to the electric control signals of the fourth valve. The beneficial effect of this step is that the second temperature transmitter cooperates with the fourth valve to realize the adjustment of the working state of the heat exchanger.

[0015] In one of the embodiments of the application, the drain pipeline is connected between the drain port and the water pump, the fifth valve is connected in series in the drain pipeline, and the water supply pipeline between the drain pipeline and the water pump is connected with the sixth valve. The beneficial effect of this step is that the fifth valve and the sixth valve can cooperate to realize the function of stopping water supply and emptying the injection water in the water storage tank.

[0016] In one of the embodiments of the application, the water supply pipeline between the water pump and the water using point is connected with a sampling pipeline, the seventh valve is connected in series in the sampling pipeline, the water supply pipeline between the sampling pipeline and the water using point is connected with the pressure gauge and the eighth valve. The beneficial effect of this step is that the seventh valve can be used to sample the injection water, the pressure gauge can be used to detect the water pressure in the water supply pipeline, and the eighth valve can be used to manually close the water supply branch when the water pressure problem is found. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference signs. In the drawings, the elements or parts are not necessarily drawn according to the actual proportions.

[0018] Figure 1 It is a structural schematic view of water distribution system for injection.

[0019] Wherein, 1 water storage tank, 101 liquid inlet, 102 liquid return port, 103 liquid outlet, 104 gas port, 105 first valve, 106 electric heating breather, 107 first temperature transmitter, 108 first pressure transmitter;

[0020] 2 water supply branch, 201 water pump, 202 fifth valve, 203 sixth valve, 204 seventh valve, 205 pressure gauge, 206 eighth valve;

[0021] 3 water return branch, 301 heat exchanger, 302 second valve, 303 second temperature transmitter, 304 fourth valve, 305 filter, 306 ninth valve,

[0022] 4 external discharge branch, 401 third valve, 402 conductance instrument. DETAILED DESCRIPTION

[0023] In the present application, unless otherwise explicitly specified and limited, the terms in the present application should be understood in a broad sense, such as connection, which can be fixed connection, or detachable connection, or integral, which can be directly connected, or indirectly connected through intermediate medium. If it involves power, electronic equipment, it can also be electrically connected or communication signal connection, etc. For ordinary skilled in the art, different terms in the present application can be understood according to the specific circumstances, and the specific meaning of the scope should be limited to the function of the present application.

[0024] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application.

[0025] As Figure 1As shown, a water for injection distribution system includes: a water storage tank 1, a water supply branch 2, a return water branch 3, and an external discharge branch 4. The water storage tank 1 has a liquid inlet 101, a liquid return port 102, and a liquid discharge port 103. The gas port 104 of the water storage tank 1 is connected to an electric heating respirator 106 through a first valve 105. The water storage tank 1 is also connected to a first temperature transmitter 107 and a first pressure transmitter 108; the water supply branch 2 has a water supply pipe connecting the liquid discharge port 103 with a water point, and a water pump 201 is connected in series in the water supply pipe. The water pump 201 is used to pump the water for injection in the water storage tank 1 into the water point. The water pump 201 is connected to the water supply pipe. The first temperature transmitter 107 and the first pressure transmitter 108 are electrically connected to each other via signals. The return water branch 3 includes a return water pipe connecting the water use point and the return liquid port 102, and a heat exchanger 301 and a second valve 302 are connected in series in the return water pipe. The external discharge branch 4 includes an external discharge pipe connected to the return water pipe between the second valve 302 and the heat exchanger 301, and a third valve 401 is connected in series in the external discharge pipe. The external discharge branch 4 also includes a conductivity meter 402, which is connected to the return water pipe between the heat exchanger 301 and the external discharge pipe, and the conductivity meter 402 is electrically connected to the second valve 302 and the third valve 401 via signals.

[0026] In some embodiments of the present application, the liquid inlet 101 is connected to the water production pipeline of the distilled water preparation system, and the water use point is connected to the external water pipe through a water supply valve. The first valve 105, the second valve 302 and the third valve 401 use pneumatic diaphragm valves. The opening and closing states of the air port 104 are controlled by the first valve 105, and the switching of the return and discharge functions is realized by the cooperation of the second valve 302 and the third valve 401.

[0027] In some embodiments of the present application, the injection water distribution system also includes: a controller, which can be an industrial computer, an industrial computer or a PLC. The first temperature transmitter 107 and the first pressure transmitter 108 are electrically connected to the controller, and the controller is electrically connected to the water pump 201, so as to control the working state of the water pump 201. For example, when the pressure value in the water storage tank 1 is too low, the controller controls the water pump 201 to stop, and the preparation system supplies water to the water storage tank 1 to the set water pressure. The temperature transmitter detects the water temperature in the water storage tank 1. When the water temperature is lower than the set value, the water supply valve is closed, and the return water is heated through the heat exchanger 301 until the water temperature meets the use requirements.

[0028] In some embodiments of the present application, Figure 1 As shown, the return water pipe between the water use point and the heat exchanger 301 is connected to the second temperature transmitter 303, the first heat exchange port of the heat exchanger 301 is connected to the steam inlet branch, and the second heat exchange port is connected to the condensate discharge branch 4. The second temperature transmitter 303 is connected to the valve electronic control signal in the steam inlet branch, and the working state of the heat exchanger 301 is automatically controlled according to the return water temperature through the second temperature transmitter 303.

[0029] In some embodiments of the present application, as shown in Figure 1 the fourth valve 304 is adopted as a pneumatic angle seat valve, and the filter 305 is adopted as a Y-type filter. The ninth valve 306 is adopted as a drain valve. The second temperature transmitter 303 sends a control signal to the controller. When the return water temperature is lower than the set value, the controller opens the fourth valve 304, and the steam enters the heat exchanger 301 to heat the return water. When the return water temperature meets the requirement, the fourth valve 304 is closed, so as to realize the adjustment of the working state of the heat exchanger 301.

[0030] In some embodiments of the present application, as shown in Figure 1 the fifth valve 202 and the sixth valve 203 are both adopted as manual diaphragm valves. Through the cooperation of the fifth valve 202 and the sixth valve 203, the function of stopping water supply and emptying the injection water in the water storage tank 1 can be realized.

[0031] In some embodiments of the present application, as shown in Figure 1 the sampling pipeline is connected with the water supply pipeline between the water pump 201 and the water using point. The seventh valve 204 is connected in series in the sampling pipeline. The pressure gauge 205 and the eighth valve 206 are connected with the water supply pipeline between the sampling pipeline and the water using point. The seventh valve 204 is adopted as a sampling valve. The eighth valve 206 is adopted as a manual diaphragm valve. Through the seventh valve 204, the injection water can be sampled. Through the pressure gauge 205, the water pressure in the water supply pipeline can be monitored. Through the eighth valve 206, the operator can close the water supply branch 2 in time when the water pressure problem is found.

[0032] In some embodiments of the present application, the controller is further connected with an alarm device. The alarm device is adopted as an audible and visual alarm. When the water quality is not up to the standard, the audible and visual alarm sends an audible and visual alarm signal synchronously, so as to inform the staff to overhaul the system.

[0033] The water injection distribution system in use, by water injection preparation system through water pipeline into the water injection storage tank 1, then start the water pump 201, so that the water injection through the water supply pipeline and backwater pipeline circulation, open water point water supply valve, the water injection into the water pipeline, in the process of water injection backflow, using a conductivity meter 402 on the conductivity of the water injection measurement, because the conductivity of the high and low and the ion concentration and species in water, therefore, by measuring the conductivity of the water, can determine the purity of water, understand the ion concentration and species in water, when the conductivity is outside the threshold range, the second valve 302 is closed, the third valve 401 is opened, the water injection in backwater pipeline is discharged, so as to avoid backwater into the water storage tank 1 again.

[0034] The above is only the embodiment of the present application, the specific structure and the characteristics of the scheme known in the art are not described in detail, the ordinary skilled in the art knows all the ordinary technical knowledge in the technical field of the present application before the application date or the priority date, can know all the prior art in the field, and has the ability to apply the conventional experimental means before the date, the ordinary skilled in the art can improve and implement the present scheme under the inspiration of the present application, some typical known structure or known method should not be the obstacle for the ordinary skilled in the art to implement the present application. It should be pointed out that for those skilled in the art, without departing from the structure of the present application, a number of variations and improvements can be made, which should also be considered as the protection scope of the present application, which will not affect the effect and practicality of the present application.

Claims

1. A water for injection dispensing system characterized in that, The utility model relates to a kind of water supply systems for injection, including: Water storage tank, with liquid inlet, return liquid port and liquid outlet, the air port of the water storage tank is connected with electric heating respirator by first valve, the water storage tank is also connected with first temperature transmitter and first pressure transmitter; Water supply branch, with the water supply pipeline that the liquid outlet is communicated with water point, water pump is connected in series in the water supply pipeline, the water pump is used to pump the water for injection in the water storage tank into water point, the water pump is electrically controlled signal connection with the first temperature transmitter and the first pressure transmitter; Water return branch, with the water return pipeline that water point and the return liquid port are communicated, heat exchanger and second valve are connected in series in the water return pipeline; External discharge branch, with the water return pipeline that the second valve and the heat exchanger are communicated between the water return pipeline, third valve is connected in series in the water return pipeline, the electric conductivity instrument is further provided in the external discharge branch, the electric conductivity instrument is connected in the water return pipeline between the heat exchanger and the water return pipeline, the electric conductivity instrument is electrically controlled signal connection with the second valve and the third valve.

2. The water dispensing system for injection of claim 1, wherein, Second temperature transmitter is connected in the water return pipeline between water point and the heat exchanger, the first heat exchange port of the heat exchanger is connected with steam inlet branch, second heat exchange port is connected with condensate water external discharge branch, the second temperature transmitter is electrically controlled signal connection with the valve in steam inlet branch.

3. The water dispensing system for injection of claim 2, wherein, Fourth valve and filter are connected in series in the steam inlet branch, the second temperature transmitter is electrically controlled signal connection with the fourth valve.

4. The water dispensing system for injection of claim 1, wherein, Drainage pipeline is connected between the liquid outlet and the water pump, fifth valve is connected in series in the drainage pipeline, sixth valve is connected in series in the water supply pipeline between the drainage pipeline and the water pump.

5. The water dispensing system for injection of claim 1, wherein, Sampling pipeline is connected in the water supply pipeline between the water pump and water point, seventh valve is connected in series in the sampling pipeline, pressure gauge and eighth valve are connected in the water supply pipeline between the sampling pipeline and water point.

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