CN215365120U

CN215365120U - Circulating water scale and corrosion inhibitor concentration monitoring device

Info

Publication number: CN215365120U
Application number: CN202121873236.8U
Authority: CN
Inventors: 李晓辉; 杜刚; 秦光宇; 秦进良; 张龙
Original assignee: Luoyang Qianglong Environmental Protection Technology Co ltd; Luoyang Qianglong Industrial Co ltd
Current assignee: Luoyang Qianglong Environmental Protection Technology Co ltd; Luoyang Qianglong Industrial Co ltd
Priority date: 2021-08-11
Filing date: 2021-08-11
Publication date: 2021-12-31
Anticipated expiration: 2031-08-11

Abstract

The utility model discloses a circulating water scale and corrosion inhibitor concentration monitoring device which comprises a raw material area, a mixing box, a monitoring mechanism and an equipment area, wherein the discharge end of the raw material area is connected with the feeding end of the mixing box through a pipeline a, a sampling port of the mixing box is connected with a branch pipe, the discharge end of the branch pipe is connected with an inlet of the monitoring mechanism, the branch pipe is provided with a solenoid valve b, the solenoid valve b and the solenoid valve a are both electrically connected with the signal output end of a PLC (programmable logic controller) a, the monitoring mechanism is respectively electrically connected with the signal input ends of the PLC a and the PLC b, the discharge end of the mixing box is connected with the equipment area through a pipeline b, the pipeline b is provided with a solenoid valve c, and the solenoid valve c is electrically connected with the signal output end of the PLC b. The fluorescer is added in the raw material area, after the fluorescer and the scale and corrosion inhibitor are mixed in the mixing box, the PLC a controls the electromagnetic valve a to be opened, a small amount of mixed liquid enters the monitoring mechanism through the branch pipe to monitor the fluorescer, and therefore the concentration of the scale and corrosion inhibitor is monitored.

Description

Circulating water scale and corrosion inhibitor concentration monitoring device

Technical Field

The utility model relates to the field of environmental protection, in particular to a circulating water scale and corrosion inhibitor concentration monitoring device.

Background

In the industrial circulating cooling water system, adding the scale and corrosion inhibitor is a main means for controlling scale inhibition and corrosion, the scale and corrosion inhibitor has wide chemical substance types from organic matters to inorganic matters and from synthetic matters to natural matters, meanwhile, due to the existence of synergistic effect, certain synergistic effect can be achieved after substances which are independently used and have no corrosion inhibition effect are compounded, the selection range of the scale and corrosion inhibitor is further expanded, and the classification methods of the scale and corrosion inhibitor are more, the corrosion inhibitor can be classified according to chemical composition, electrochemical mechanism or physical and chemical mechanism, and when the corrosion inhibitor is classified according to whether phosphorus is contained or not, the corrosion inhibitor can be divided into phosphorus-based corrosion inhibitors and non-scale phosphorus corrosion inhibitors.

Most of the most commonly used scale and corrosion inhibitors for the circulating cooling water system at present are phosphorus-containing formulas. In order to meet the requirement of environmental protection, related laws and regulations increasingly restrict indexes of phosphorus in sewage discharge, the phosphorus is a biological eutrophication substance and can promote bacterial algae breeding when entering an environmental water body, and the traditional phosphorus scale and corrosion inhibitor in an industrial circulating water system provides a large amount of phosphorus sources for the circulating water system, so that bacterial algae slime breeding, pollution discharge limitation and other series problems endanger the safe and stable running of circulating water and the like are caused. In the existing system, the scale and corrosion inhibitor is added according to the judgment of workers on the water quality, and the concentration of the scale and corrosion inhibitor in the circulating water is difficult to monitor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provides a circulating water scale and corrosion inhibitor concentration monitoring device.

The purpose of the utility model is realized by the following technical scheme: the utility model provides a circulating water scale and corrosion inhibitor concentration monitoring devices, including the raw materials district, the mixing box, monitoring mechanism and equipment district, it has the fluorescent agent to add in the raw materials district, the discharge end in raw materials district passes through pipeline an and is connected with the pan feeding end of mixing box, be provided with solenoid valve an on the pipeline a, the sample connection of mixing box is connected with the branch pipe, the discharge end of branch pipe and monitoring mechanism's entry linkage, be provided with solenoid valve b on the branch pipe, solenoid valve b and solenoid valve a all are connected with PLC controller an's signal output part electricity, monitoring mechanism is connected with PLC controller an and PLC controller b's signal input part electricity respectively, and monitoring mechanism is used for monitoring the fluorescent agent concentration, the discharge end of mixing box passes through pipeline b and is connected with the equipment district, be provided with solenoid valve c on the pipeline b, solenoid valve c is connected with PLC controller b's signal output part electricity.

Preferably, the raw materials district includes the raw materials case, and the upper end of raw materials case is provided with the pan feeding pipe, and the pan feeding pipe is used for adding raw materials and fluorescent agent, and the last surface mounting of raw materials case has motor a, and motor a's power take off end is connected with agitating unit an, and agitating unit an is used for mixing raw materials and fluorescent agent in the raw materials case, and the discharge end of raw materials case passes through pipeline an and is connected with the pan feeding end of mixing box.

Preferably, the stirring device a comprises a rotating shaft a and stirring rods a, the power output end of the motor a is connected with the rotating shaft a, and the rotating shaft a is provided with the stirring rods a in a staggered mode.

Preferably, a bearing a is installed in the box body of the raw material box, and the bearing a is sleeved on the rotating shaft a.

Preferably, the upper end of the mixing box is provided with a water inlet pipe, the water inlet pipe is provided with an electromagnetic valve e, the electromagnetic valve e is electrically connected with a signal output end of the PLC a, the upper surface of the mixing box is provided with a motor b, and a power output end of the motor b is connected with the stirring device b.

Preferably, agitating unit b includes pivot b and puddler b, and motor b's power take off end is connected with pivot b, and the dislocation is installed a plurality of puddlers b on the pivot b, and the cross-section of puddler b is triangle-shaped.

Preferably, a bearing b is installed in the box body of the mixing box, and the bearing b is sleeved on the rotating shaft b.

Preferably, the monitoring mechanism comprises a fluorescence sensor and a collecting box, the feeding end of the fluorescence sensor is connected with the discharging end of the branch pipe, the fluorescence sensor is used for detecting the content of fluorescence, the outlet of the fluorescence sensor is connected with the inner cavity of the collecting box through a pipeline c, an electromagnetic valve d is arranged on the pipeline c, and the electromagnetic valve d is electrically connected with the signal output end of the PLC b.

Preferably, the equipment area comprises a cooling tower, a circulating water pump and a heat exchanger, an inlet of the cooling tower is connected with a discharge end of the mixing box through a pipeline b, and the cooling tower, the circulating water pump and the heat exchanger sequentially form an annular loop.

Preferably, the cooling tower is provided with a drain pipe, and the drain pipe is provided with a valve.

The utility model has the following advantages: according to the utility model, the fluorescer is added in the raw material area, the fluorescer and the scale and corrosion inhibitor are mixed in the mixing box, the PLC a controls the solenoid valve a to be opened, a small amount of mixed liquid enters the monitoring mechanism through the branch pipe to monitor the fluorescer, so that the concentration of the scale and corrosion inhibitor is monitored, when the concentration of the scale and corrosion inhibitor reaches a set value, the monitoring mechanism sends a signal to the PLC b, the PLC b receives and processes the signal, the solenoid valve c is immediately controlled to be opened, and the scale and corrosion inhibitor enters the circulating water system, so that the concentration of the scale and corrosion inhibitor in the circulating water is monitored.

Drawings

FIG. 1 is a schematic diagram of a concentration monitoring device and an equipment layer;

FIG. 2 is a schematic view of the mixing box;

FIG. 3 is a schematic structural view of a stirring rod b;

FIG. 4 is a schematic view of the construction of the stock chest;

in the figure, 1-raw material box, 2-motor a, 3-feeding pipe, 4-pipeline a, 5-electromagnetic valve a, 6-motor b, 7-water inlet pipe, 8-mixing box, 9-PLC controller a, 10-electromagnetic valve b, 11-branch pipe, 12-fluorescence sensor, 13-electromagnetic valve d, 14-pipeline c, 15-collecting box, 16-electromagnetic valve c, 17-PLC controller b, 18-pipeline b, 19-valve, 20-cooling tower, 21-circulating water pump, 22-heat exchanger, 23-return pipe, 24-drain pipe, 25-rotating shaft b, 26-stirring rod b, 27-bearing b, 28-bearing a, 29-stirring rod a, 30-rotating shaft a, 31-electromagnetic valve e, 101-feed zone, 102-monitoring mechanism, 103-equipment zone, 104-stirring device b, 105-stirring device a.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally placed when the products of the present invention are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and are used only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element that is referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In this embodiment, as shown in fig. 1, a circulating water scale and corrosion inhibitor concentration monitoring device comprises a raw material area 101, a mixing box 8, a monitoring mechanism 102 and an equipment area 103, wherein a fluorescent agent is added in the raw material area 101, a discharge end of the raw material area 101 is connected with a feed end of the mixing box 8 through a pipeline a4, a solenoid valve a5 is arranged on a pipeline a4, a sampling port of the mixing box 8 is connected with a branch pipe 11, a discharge end of the branch pipe 11 is connected with an inlet of the monitoring mechanism 102, a solenoid valve b10 is arranged on the branch pipe 11, both the solenoid valve b10 and the solenoid valve a5 are electrically connected with a signal output end of a PLC 9, the monitoring mechanism 102 is electrically connected with signal input ends of a PLC controller 9 and a PLC controller b17 respectively, and monitoring mechanism 102 is used for monitoring fluorescent agent concentration, and the discharge end of mixing box 8 passes through pipeline b18 and is connected with equipment area 103, is provided with solenoid valve c16 on the pipeline b18, and solenoid valve c16 is connected with PLC controller b 17's signal output end electricity. The fluorescer is added in the raw material area 101, the fluorescer and the scale and corrosion inhibitor are mixed in the mixing box 8, the PLC a9 controls the electromagnetic valve a5 to be opened, a small amount of mixed liquid enters the monitoring mechanism 102 through the branch pipe 11 to monitor the fluorescer, so that the concentration of the scale and corrosion inhibitor is monitored, when the concentration of the scale and corrosion inhibitor reaches a set value, the monitoring mechanism 102 sends a signal to the PLC b17, the PLC b17 receives and processes the signal, immediately controls the electromagnetic valve c16 to be opened, the scale and corrosion inhibitor enters the circulating water system, and therefore the concentration of the scale and corrosion inhibitor in the circulating water is monitored.

In this embodiment, as shown in fig. 4, the raw material area 101 includes a raw material tank 1, a feeding pipe 3 is disposed at an upper end of the raw material tank 1, the feeding pipe 3 is used for adding raw material and fluorescent agent, a motor a2 is mounted on an upper surface of the raw material tank 1, a power output end of the motor a2 is connected with a stirring device a105, the stirring device a105 is used for mixing the raw material and the fluorescent agent in the raw material tank 1, and a discharging end of the raw material tank 1 is connected with a feeding end of the mixing box 8 through a pipeline a 4. Further, the stirring device a105 comprises a rotating shaft a30 and a stirring rod a29, the power output end of the motor a2 is connected with the rotating shaft a30, and a plurality of stirring rods a29 are installed on the rotating shaft a30 in a staggered mode. Preferably, a bearing a28 is installed in the box body of the raw material box 1, and a bearing a28 is sleeved on the rotating shaft a 30. That is, the raw material tank 1 mainly functions to uniformly mix the scale and corrosion inhibitor and the fluorescer, so as to ensure that the amounts of the scale and corrosion inhibitor and the fluorescer entering the mixing tank 8 through the pipeline a4 in unit time are basically consistent. Specifically, the motor a2 is started to drive the rotating shaft a30 to rotate, so as to drive the stirring rod a29 to rotate, and the stirring rod a29 can uniformly mix the scale and corrosion inhibitor and the fluorescent agent in the rotating process, so that the amounts of the scale and corrosion inhibitor and the fluorescent agent falling into the mixing box 8 are basically consistent.

In the present embodiment, as shown in fig. 2 and 3, the upper end of the mixing box 8 is provided with a water inlet pipe 7, the water inlet pipe 7 is provided with an electromagnetic valve e31, the electromagnetic valve e31 is electrically connected with a signal output end of the PLC controller a9, the upper surface of the mixing box 8 is provided with a motor b6, and a power output end of the motor b6 is connected with the stirring device b 104. Further, the stirring device b104 comprises a rotating shaft b25 and a stirring rod b26, the power output end of the motor b6 is connected with the rotating shaft b25, preferably, a bearing b27 is installed in the box body of the mixing box 8, and a bearing b27 is sleeved on the rotating shaft b 25. A plurality of stirring rods b26 are installed on the rotating shaft b25 in a staggered mode, and the section of each stirring rod b26 is triangular. Specifically, the motor b6 is started to drive the rotating shaft b24 to rotate, so as to drive the stirring rod b26 to rotate, and the stirring rod b26 enables the scale and corrosion inhibitor and the fluorescent agent to be fully dissolved in water in the rotating process. In this embodiment, the cross section of the stirring rod b26 is triangular, when the stirring rod b26 rotates, the mixed liquid flows along the two sides of the stirring rod b26, and when the stirring rod b26 rotates to another position, the mixed liquid above the former position falls down due to its own weight, so that the mixed liquid forms a turbulent flow, and the dissolving efficiency is improved.

In this embodiment, the monitoring mechanism 102 includes a fluorescence sensor 12 and a collection box 15, a feeding end of the fluorescence sensor 12 is connected with a discharging end of the branch pipe 11, the fluorescence sensor 12 is used for detecting the content of fluorescence, an outlet of the fluorescence sensor 12 is connected with an inner cavity of the collection box 15 through a pipeline c14, an electromagnetic valve d13 is arranged on a pipeline c14, and an electromagnetic valve d13 is electrically connected with a signal output end of the PLC controller b 17. Specifically, the fluorescence sensor 12 detects the content of the fluorescent agent in the mixed solution, thereby determining the concentration of the scale inhibitor. Opening the electromagnetic valve b10 for a certain time, detecting sample liquid by the fluorescent sensor 12 through the branch pipe 11, when the content of fluorescent agent detected by the fluorescent sensor 12 is lower than a limited range, sending a signal to the PLC controller a9 by the fluorescent sensor 12, receiving and processing the signal by the PLC controller a9, controlling the time for opening the electromagnetic valve a5 according to the difference, continuously discharging the fluorescent material to the mixing box 8, after mixing, opening the electromagnetic valve b10, detecting the sample liquid by the fluorescent sensor again, when the content of fluorescent agent detected by the fluorescent sensor 12 is in the limited range, sending a signal to the PLC controller b17 by the fluorescent sensor 12, receiving and processing the signal by the PLC controller b17, controlling the electromagnetic valve c16 and the electromagnetic valve d13 to be opened, enabling the mixed liquid in the mixing box 8 to enter a cooling water system and discharging the sample liquid in the fluorescent sensor 12 into the collecting box 15; when the content of the fluorescent agent detected by the fluorescent sensor 12 is higher than the limited range, the fluorescent sensor 12 sends a signal to the PLC a9, the PLC a9 receives and processes the signal, and controls the opening time of the electromagnetic valve e31 according to the difference value, and water is added into the mixing box 8, so that the concentration is reduced.

In this embodiment, the facility area 103 includes a cooling tower 20, a circulating water pump 21 and a heat exchanger 22, an inlet of the cooling tower 20 is connected to a discharge end of the mixing box 8 through a pipe b18, and the cooling tower 20, the circulating water pump 21 and the heat exchanger 22 sequentially form an annular loop. That is, the water outlet end of the cooling tower 20 is connected to the inlet of the circulating water pump 21 through a water pipe, the outlet of the circulating water pump is also connected to the inlet of the heat exchanger 22 through a water pipe, and the outlet of the heat exchanger 22 is communicated with the inner cavity of the cooling tower 20 through the return pipe 23. Furthermore, a drain pipe 24 is provided on the cooling tower 20, and a valve 19 is provided on the drain pipe 24. After a period of use, the staff opens the valve 19 to replace the cooling water.

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 various changes in the embodiments and/or modifications of the utility model can be made, and equivalents and modifications of some features of the utility model can be made without departing from the spirit and scope of the utility model.

Claims

1. A circulating water scale and corrosion inhibitor concentration monitoring device is characterized in that: including raw materials district (101), mixing box (8), monitoring mechanism (102) and equipment district (103), it has the fluorescent agent to add in raw materials district (101), the discharge end of raw materials district (101) pass through pipeline a (4) with the pan feeding end of mixing box (8) is connected, be provided with solenoid valve a (5) on pipeline a (4), the sample connection of mixing box (8) has branch pipe (11), the discharge end of branch pipe (11) with the entry linkage of monitoring mechanism (102), be provided with solenoid valve b (10) on branch pipe (11), solenoid valve b (10) with solenoid valve a (5) all are connected with the signal output part electricity of PLC controller a (9), monitoring mechanism (102) respectively with the signal input part electricity of PLC controller a (9) and PLC controller b (17) is connected, and monitoring mechanism (102) are used for monitoring the fluorescent agent concentration, the discharge end of mixing box (8) pass through pipeline b (18) with equipment district (103) are connected, be provided with solenoid valve c (16) on pipeline b (18), solenoid valve c (16) with the signal output part electricity of PLC controller b (17) is connected.

2. The circulating water scale and corrosion inhibitor concentration monitoring device according to claim 1, characterized in that: raw materials district (101) includes raw material tank (1), the upper end of raw material tank (1) is provided with pan feeding pipe (3), pan feeding pipe (3) are used for adding raw materials and fluorescent agent, the last surface mounting of raw material tank (1) has motor a (2), the power take off end and the agitating unit a (105) of motor a (2) are connected, agitating unit a (105) are used for mixing raw materials and fluorescent agent in raw material tank (1), the discharge end of raw material tank (1) passes through pipeline a (4) with the pan feeding end of mixing box (8) is connected.

3. The circulating water scale and corrosion inhibitor concentration monitoring device of claim 2, which is characterized in that: agitating unit a (105) are including pivot a (30) and puddler a (29), the power take off end of motor a (2) with pivot a (30) are connected, the dislocation is installed a plurality of on pivot a (30) puddler a (29).

4. The circulating water scale and corrosion inhibitor concentration monitoring device according to claim 3, characterized in that: and a bearing a (28) is arranged in the box body of the raw material box (1), and the rotating shaft a (30) is sleeved with the bearing a (28).

5. The circulating water scale and corrosion inhibitor concentration monitoring device of claim 4, which is characterized in that: the upper end of mixing box (8) is provided with oral siphon (7), be provided with solenoid valve e (31) on oral siphon (7), solenoid valve e (31) with the signal output part electricity of PLC controller a (9) is connected, the last surface mounting of mixing box (8) has motor b (6), the power take off end and the agitating unit b (104) of motor b (6) are connected.

6. The circulating water scale and corrosion inhibitor concentration monitoring device of claim 5, which is characterized in that: agitating unit b (104) are including pivot b (25) and puddler b (26), the power take off end of motor b (6) with pivot b (25) are connected, install a plurality of in the dislocation on pivot b (25) puddler b (26), the cross-section of puddler b (26) is triangle-shaped.

7. The circulating water scale and corrosion inhibitor concentration monitoring device of claim 6, which is characterized in that: and a bearing b (27) is arranged in the box body of the mixing box (8), and the rotating shaft b (25) is sleeved with the bearing b (27).

8. The circulating water scale and corrosion inhibitor concentration monitoring device according to any one of claims 1 to 7, characterized in that: the monitoring mechanism (102) comprises a fluorescence sensor (12) and a collecting box (15), the feeding end of the fluorescence sensor (12) is connected with the discharging end of the branch pipe (11), the fluorescence sensor (12) is used for detecting the content of fluorescence, the outlet of the fluorescence sensor (12) is connected with the inner cavity of the collecting box (15) through a pipeline c (14), an electromagnetic valve d (13) is arranged on the pipeline c (14), and the electromagnetic valve d (13) is electrically connected with the signal output end of the PLC b (17).

9. The circulating water scale and corrosion inhibitor concentration monitoring device of claim 8, wherein: the equipment area (103) comprises a cooling tower (20), a circulating water pump (21) and a heat exchanger (22), an inlet of the cooling tower (20) is connected with a discharge end of the mixing box (8) through the pipeline b (18), and the cooling tower (20), the circulating water pump (21) and the heat exchanger (22) sequentially form an annular loop.

10. The circulating water scale and corrosion inhibitor concentration monitoring device of claim 9, characterized in that: and a drain pipe (24) is arranged on the cooling tower (20), and a valve (19) is arranged on the drain pipe (24).