CN213202533U - Drug concentration control device - Google Patents

Abstract

The utility model discloses a medicament concentration control device, add medicine pipeline and blowdown pipeline all the way including the multichannel, the multichannel adds the medicine pipeline and on blowdown pipeline connection to the bypass pipe in the cooling water circulation system all the way, every way adds the medicine pipeline and sets up a check valve on the road, it is connected with medicament storage bucket through adding the medicine measuring pump to add the medicine pipeline, install low liquid level alarm device on every medicament storage bucket, it all is connected with PLC automatic control cabinet electricity to add medicine measuring pump and low liquid level alarm device, set up blowdown flowmeter and blowdown motorised valve on the blowdown pipeline, blowdown flowmeter and blowdown motorised valve all are connected with PLC automatic control cabinet, PLC automatic control cabinet still is connected with moisturizing flow control device electricity, moisturizing flow control device installs in running water moisturizing pipe department. A medicament concentration control device is connected to a bypass pipe of a circulating pump set in a cooling water circulating system, a medicament feeding metering pump is started according to a preset medicament concentration value, a corresponding amount of chemical medicaments are fed into the system, new water is automatically supplemented into the system to trigger automatic medicament feeding, and the medicament effect is always in the best state.

Description

Drug concentration control device

Technical Field

The utility model relates to a concentration control device, concretely relates to medicament concentration control device.

Background

In an open circulating water system of an industrial or central air conditioner, the principle is that the evaporation of water is utilized to take away heat to realize the refrigeration effect of the system, and as the amount of water in the water increasing system is less and less, people supplement new water at the moment, so that the concentration multiple of the system is continuously increased due to the circulation; at the moment, scaling and corrosion are two most troublesome problems, a method of adding scale and corrosion inhibition agents into a system is often adopted for water quality treatment, and the effect of water quality treatment is often closely related to the concentration of the scale and corrosion inhibition agents contained in circulating water.

The method for monitoring the concentration of the medicament in the current market is to use a fluorescent tracer to detect the concentration value of the medicament in water, and the method is to mix a certain amount of fluorescent powder or fluorescent reagent in proportion into the medicament to be calibrated, when the regular sampling is detected, circulating water passes through the fluorescent tracer, the circulating water is irradiated by light with a specific frequency spectrum, reflected by fluorescence, converted into a weak current signal through an electrode plate, amplified with a large current signal and fed back to a PLC, and then the concentration of the medicament in the system is obtained by a calibration method (detecting preset low value and high value and then scaling according to a linear proportion). Comparing the monitored concentration value of the medicament with a set concentration value, adding the medicament into the system if the concentration value is lower than the set value, and stopping adding the medicament if the concentration value is higher than the set value; the method can control the concentration of the medicinal agent in the system within a certain range.

This approach has several serious problems: 1. serious hazards of fluorescers; 2. the monitoring process is theoretically feasible, but the influence factors are too much (such as turbidity, residual chlorine, bacteria and algae) and the like; 3. conversion efficiency of photoelectric signals, etc.; 4. the added medicament generally belongs to an organic medicament and can be degraded in a circulating water system, and the fluorescent reagent belongs to an inorganic substance and can not be degraded; this results in an increasing amount of fluorescent agent above the actual effective agent concentration value in the system; 5. belongs to timing sampling detection, and can not be used and detected online, thus leading to data lag and dosing lag. In conclusion, this method is unreliable and not suitable for wide-scale popularization.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a medicament concentration control device of reliable, environmental protection.

The utility model provides a following technical scheme:

medicament concentration control device, including the multichannel add medicine pipeline with blowdown pipeline all the way, the multichannel adds medicine pipeline and blowdown pipeline all the way is connected to the bypass pipe in the cooling water circulation system, sets up a check valve on every way adds the medicine pipeline, add the medicine pipeline and be connected with medicament storage bucket through adding the medicine measuring pump, the low liquid level alarm device of installation on every medicament storage bucket, it all is connected with PLC automatic control cabinet electricity to add medicine measuring pump and low liquid level alarm device, set up blowdown flowmeter and blowdown motorised valve on the blowdown pipeline, blowdown flowmeter and blowdown motorised valve all are connected with PLC automatic control cabinet, PLC automatic control cabinet still is connected with moisturizing flow control device electricity, moisturizing flow control device installs in running water moisturizing pipe department.

Furthermore, the water replenishing flow control device comprises a flow meter and a flow switch which are arranged at the position of the tap water replenishing pipe.

Furthermore, the medicament concentration control device is installed in a cooling water circulation system, a circulating pump set, a refrigeration host and a cooling tower are arranged in the cooling water circulation system, a water outlet pipeline of the cooling tower is connected with the circulating pump set, bypass pipes are connected to two ends of the circulating pump set in parallel, the circulating pump set supplies water to the refrigeration host, the refrigeration host is connected with a water inlet pipe at the top of the cooling tower through a pipeline, and a tap water replenishing pipe supplies water to the cooling tower.

Compared with the prior art, the beneficial effects of the utility model are that: a medicament concentration control device is connected to a bypass pipe of a circulating pump set in a cooling water circulating system, a medicament feeding metering pump is started according to a preset medicament concentration value, a corresponding amount of chemical medicaments are fed into the system, new water is automatically supplemented into the system to trigger automatic medicament feeding, and the medicament effect is always in the best state. Fluorescent reagent is not required to be added into the medicament, photoelectric conversion is not required, and the concentration value of the medicament in the cooling water circulation system can be always stably controlled to be always in a preset range.

Drawings

Fig. 1 is a schematic structural diagram of the drug concentration control device of the present invention.

Fig. 2 is the schematic view of the cooling water circulation system of the refrigeration machine room of the present invention.

In the figure: 1. a water replenishing flow rate control device; 2. a blowdown flow meter; 3. a blowdown electric valve; 4. dosing a metering pump; 5. a medicament storage barrel; 6. a low liquid level alarm device; 7. a check valve; 8. a PLC automatic control cabinet; 9. a tap water replenishing pipe; 10. a dosing pipeline; 11. a sewage draining pipeline; 12. a bypass pipe; 13. a flow meter; 14. a flow switch.

110. A circulating pump group; 220. a refrigeration host; 330. a cooling tower; 440. a water outlet pipeline; 550. and (4) a water inlet pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.

Please refer to fig. 1-2, the utility model discloses a medicament concentration control device, including multichannel medicine pipeline 10 and blowdown pipeline 11 all the way, multichannel medicine pipeline 10 and blowdown pipeline 11 all the way are connected to on the bypass pipe 12 among the cooling water circulation system, set up a check valve 7 on every way medicine pipeline 10, medicine pipeline 10 is connected with medicament storage bucket 5 through adding medicine measuring pump 4, install low liquid level alarm device 6 on every medicament storage bucket 5, it all is connected with PLC automatic control cabinet 8 electricity with low liquid level alarm device 6 to add medicine measuring pump 4, set up blowdown flowmeter 2 and blowdown motorised valve 3 on the blowdown pipeline 11, blowdown flowmeter 2 and blowdown motorised valve 3 all are connected with PLC automatic control cabinet 8, PLC automatic control cabinet 8 still is connected with moisturizing flow control device 1 electricity, moisturizing flow control device 1 installs in running water moisturizing pipe 9 department.

The replenishment flow control device 1 includes a flow meter 13 and a flow switch 14 installed at the main water replenishment pipe.

The medicament concentration control device is arranged in a cooling water circulation system, a circulation pump unit 110, a refrigeration main unit 220 and a cooling tower 330 are arranged in the cooling water circulation system, a water outlet pipeline 440 of the cooling tower 330 is connected with the circulation pump unit 110, two ends of the circulation pump unit 110 are connected with bypass pipes 12 in parallel, the circulation pump unit 110 supplies water to the refrigeration main unit 220, the refrigeration main unit 220 is connected with a water inlet pipe 550 at the top of the cooling tower 330 through a pipeline, and a tap water replenishing pipe 9 replenishes water for the cooling tower 330.

The working principle is as follows:

from the perspective of the whole system, the system not only can entangle and circulate the water system, but also can bring the water replenishing, pollution discharging and medicine adding devices of the system into the medicament concentration management range.

Firstly, a medicament concentration value corresponding to the quality of the make-up water is preset according to the system working condition, the make-up water quality condition and the medicament condition. When the system starts to concentrate, pure water is evaporated, the concentration of the medicament in the system linearly increases along with the increase of the concentration multiple of water, and the scale inhibition and corrosion inhibition effects of the medicament are still in the best state.

Secondly, when the water in the system is reduced, fresh water can be automatically supplemented; at the moment, a flowmeter is added on a water supplementing pipe, water quantity data of fresh water supplemented every time is calculated and sent to a PLC (programmable logic controller) automatic control cabinet, a dosing metering pump is started by the PLC automatic control cabinet according to a preset concentration value of a medicament, a corresponding amount of chemical medicament is added into the system, and the medicament effect is still in the optimal state.

Thirdly, when the system is concentrated to a certain concentration multiple, the system is started to discharge sewage, high-concentration water is discharged (corresponding amount of medicament is also brought), the system automatically supplies new water to trigger automatic dosing, and the medicament effect is always in the best state.

Fourthly, according to the degradation characteristics of the medicament, the compensation parameter setting of a certain coefficient is carried out on the medicament adding amount each time, so that the condition that the concentration of the system medicament is low due to the degradation of the medicament can be avoided.

The invention has the beneficial effects that:

1. the operation and use are extremely simplified, and the personnel management is not needed at ordinary times.

2. The concentration control of the medicament is less affected by factors, the accuracy is high, and the waste of the medicament is avoided.

3. No extra reagent is added, and no pollution is caused.

4. The process is simpler, and the manufacturing cost of the product is reduced.

5. On-line control of drug concentration.

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 (3)

1. A drug concentration control device, characterized in that: comprises a multi-path medicine adding pipeline (10) and a sewage discharging pipeline (11) all the way, wherein the multi-path medicine adding pipeline (10) and the sewage discharging pipeline (11) all the way are connected to a bypass pipe (12) in a cooling water circulation system, each path of medicine adding pipeline (10) is provided with a check valve (7), the medicine adding pipeline (10) is connected with a medicine storage barrel (5) through a medicine adding metering pump (4), a low liquid level alarm device (6) is installed on each medicine storage barrel (5), the medicine adding metering pump (4) and the low liquid level alarm device (6) are both electrically connected with a PLC automatic control cabinet (8), a sewage discharging flow meter (2) and a sewage discharging electric valve (3) are arranged on the sewage discharging pipeline (11), the sewage discharging flow meter (2) and the sewage discharging electric valve (3) are both connected with the PLC automatic control cabinet (8), the PLC automatic control cabinet (8) is also electrically connected with a water replenishing flow, the water replenishing flow control device (1) is arranged at a tap water replenishing pipe (9).

2. The drug concentration control device according to claim 1, characterized in that: the water replenishing flow control device (1) comprises a flow meter (13) and a flow switch (14) which are installed at a tap water replenishing pipe.

3. The drug concentration control device according to claim 1, characterized in that: the medicament concentration control device is installed in a cooling water circulation system, a circulating pump set (110), a refrigeration host (220) and a cooling tower (330) are arranged in the cooling water circulation system, a water outlet pipeline (440) of the cooling tower (330) is connected with the circulating pump set (110), bypass pipes (12) are connected to two ends of the circulating pump set (110) in parallel, the circulating pump set (110) supplies water to the refrigeration host (220), the refrigeration host (220) is connected with a water inlet pipe (550) at the top of the cooling tower (330) through a pipeline, and a tap water replenishing pipe (9) supplies water to the cooling tower (330).

Images