Automatic dosing device for chemical conventional water analysis test of power plant

Abstract

The invention relates to the technical field of chemical conventional water analysis tests, and discloses a power plant chemical conventional water analysis test automatic dosing device which comprises a test water tank. The automatic dosing mechanism is positioned on the periphery of the test water tank; the liquid medicine mixing mechanism is positioned in the test water tank; and the lifting adjusting mechanism is positioned below the test water tank. According to the automatic dosing device for the chemical routine water analysis test of the power plant, when the chemical routine water analysis test of the power plant is operated, an operator uses the automatic dosing device for the chemical routine water analysis test to start corresponding program control through the PLC according to a test dosing sequence; the program control device starts the metering pump to extract a reagent and injects the reagent into a water sample needing to be detected in the test water tank through the connection of the dosing pipe and the connecting pipe, so that the dosing amount of the reagent and the chemical reaction time can be accurately controlled, the test error is reduced, the test accuracy is improved, and the labor intensity of chemical analysts is reduced.

Description

Technical Field

[0001] This invention relates to the field of conventional chemical water analysis testing technology, specifically to an automatic dosing device for conventional chemical water analysis testing in power plants. Background Technology

[0002] The testing and evaluation of high water content analyzers can be divided into laboratory testing and field testing. Since there are certain differences between laboratory media and field crude oil media, the accuracy of high water content analyzers is greatly affected. Therefore, instruments that pass laboratory testing cannot be directly applied to the field. Water samples from the power plant need to be taken and tested in the laboratory.

[0003] In the existing technology, during the dosing process of chemical water analysis tests in power plants, errors in the dosage and reaction time are prone to occur during manual operation, which cannot guarantee the accuracy of the test. Therefore, there is an urgent need for an automatic dosing device for conventional chemical water analysis tests in power plants. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic dosing device for routine water analysis tests in power plants, in order to solve the problem mentioned in the background art that errors in the dosage and reaction time during manual operation can easily occur, thus failing to guarantee the accuracy of the test.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an automatic dosing device for routine water analysis tests in power plants, comprising:

[0006] The test water tank is used to mix conventional chemical water and reagents from the power plant.

[0007] An automatic dosing mechanism is located on the outer periphery of the test water tank. The automatic dosing mechanism includes a metering pump, a metering instrument is provided on one side of the metering pump, a connected reagent cylinder is provided on the top of the metering pump, a dosing timer is provided on one side of the outer wall of the test water tank, and a PLC controller is provided below the dosing timer.

[0008] A chemical mixing mechanism is located inside the test water tank. The chemical mixing mechanism includes a connecting slot, and a matching snap-fit ​​cover plate is snapped onto the inner wall of the connecting slot. A drive shaft is rotatably mounted on the inner wall of the snap-fit ​​cover plate. A ring-shaped cleaning scraper is provided at the top and bottom of the drive shaft. An arc-shaped scraper is provided at one end of the cleaning scraper. A first brush is provided on one side of the arc-shaped scraper, and a second brush is provided on one side of the top cleaning scraper.

[0009] The lifting and adjusting mechanism is located below the test water tank.

[0010] As a preferred embodiment of the present invention, the lifting adjustment mechanism includes a supporting base shell, the top of the supporting base shell is provided with a rotating locking hole, the inner wall of the rotating locking hole is rotatably provided with a threaded retaining ring, the outer periphery of the threaded retaining ring is provided with an external gear ring, and a transmission gear is meshed on one side of the external gear ring.

[0011] As a preferred embodiment of the present invention, the top of the reagent cylinder is provided with a threaded inlet pipe, the top of the threaded inlet pipe is threadedly connected with a matching threaded cap, and a liquid level window is provided on one side of the reagent cylinder.

[0012] As a preferred embodiment of the present invention, a dosing pipe is provided on the other side of the metering pump, and a connecting pipe is provided on the outer periphery of the top of the test water tank, the connecting pipe being connected to the flange of the dosing pipe.

[0013] As a preferred embodiment of the present invention, the outer wall of the test water tank is provided with a mounting plate adapted to the bottom of the metering pump, and a drain pipe is provided on the other side of the bottom of the test water tank.

[0014] As a preferred embodiment of the present invention, an observation window is provided on one side of the test water tank, and the PLC controller is located on one side of the observation window.

[0015] As a preferred embodiment of the present invention, an auxiliary support plate is provided on one side of the supporting base shell, and an AC motor is provided on the top of one side of the auxiliary support plate. The drive end of the AC motor is engaged and fixed with the transmission gear.

[0016] As a preferred embodiment of the present invention, the snap-fit ​​cover plate is fixed to the connecting slot by setting fastening bolts, and a water inlet pipe is provided on one side of the top of the snap-fit ​​cover plate.

[0017] As a preferred embodiment of the present invention, a servo motor is provided on the top of the snap-fit ​​cover plate, and the top end of the transmission shaft is connected and fixed to the drive end of the servo motor.

[0018] As a preferred embodiment of the present invention, the bottom of the test water tank is provided with a lifting stud adapted to the threaded retaining ring, and the bottom end of the lifting stud is provided with an anti-detachment circular plate.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. The automatic dosing device for routine chemical water analysis in this power plant allows operators to prepare the required chemical reagents and pour them into the reagent cylinder during the chemical water analysis test. The screw cap facilitates the sealing of the threaded inlet pipe. According to the test dosing sequence, the PLC controller starts the corresponding program control. The program control device starts the metering pump to extract the reagents and inject them into the water sample to be tested in the test water tank through the dosing pipe and connecting pipe. The dosing timer starts timing according to the test requirements in the program control device. After the required reaction time is reached, the program control device starts the metering pump to extract the second reagent and inject it into the water sample to be tested until the test reagents are added in sequence. Using the automatic dosing device for routine chemical water analysis in the power plant can accurately control the amount of reagents added and the chemical reaction time, reduce test errors, improve test accuracy, and reduce the labor intensity of chemical analysts.

[0021] 2. The automatic dosing device for routine chemical water analysis tests in this power plant uses a drive shaft to drive a cleaning scraper to clean the bottom of the test water tank and the bottom of the snap-fit ​​cover. The arc-shaped scraper facilitates the cleaning of the side walls of the test water tank. Both the cleaning scraper and the arc-shaped scraper have beveled edges on one side to facilitate the removal of stains. The first brush is used to scrub the side walls, and the second brush is used to scrub the bottom of the snap-fit ​​cover. Through repeated scraping and scrubbing, the test water tank can be cleaned.

[0022] 3. The automatic dosing device for routine chemical water analysis in this power plant uses an AC motor to drive a transmission gear, which in turn drives an external gear ring to rotate. This, in turn, causes a threaded retaining ring to rotate inside a rotating retaining hole, facilitating the control of the lifting stud and thus adjusting the height of the test water tank. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an automatic dosing device for routine chemical water analysis in a power plant, according to one embodiment of the present invention.

[0024] Figure 2 This is a schematic diagram of the bottom structure of an automatic dosing device for routine water analysis in a power plant, according to one embodiment of the present invention.

[0025] Figure 3 This is a cross-sectional structural schematic diagram of an automatic dosing device for routine water analysis in a power plant, according to one embodiment of the present invention.

[0026] Figure 4 This is a partial bottom structure schematic diagram of an automatic dosing device for routine water analysis in a power plant, according to one embodiment of the present invention.

[0027] Figure 5This is a partial explosion diagram of an automatic dosing device for routine water analysis in a power plant, according to one embodiment of the present invention.

[0028] Figure 6 This is a schematic diagram of the automatic dosing mechanism of an automatic dosing device for routine water analysis tests in power plants, according to one embodiment of the present invention.

[0029] Figure 7 This is a schematic diagram of the chemical mixing mechanism of an automatic dosing device for routine water analysis in a power plant, according to one embodiment of the present invention.

[0030] Figure 8 This is a partial exploded structural diagram of the lifting adjustment mechanism of an automatic dosing device for routine water analysis in a power plant, according to one embodiment of the present invention.

[0031] Figure 9 This is a schematic diagram of the test process structure of an automatic dosing device for routine water analysis in power plants, according to one embodiment of the present invention.

[0032] In the picture:

[0033] 1. Test water tank;

[0034] 2. Automatic dosing mechanism; 201. Metering pump; 202. Metering instrument; 203. Dosing cylinder; 204. Threaded inlet pipe; 205. Threaded cap; 206. Liquid level window; 207. Dosing pipe; 208. Connecting pipe; 209. Mounting tray; 210. Drain pipe; 211. Dosing timer; 212. PLC controller; 213. Observation window;

[0035] 3. Medicine mixing mechanism; 301. Connecting slot; 302. Snap-on cover plate; 303. Fastening bolt; 304. Water inlet pipe; 305. Drive shaft; 306. Cleaning scraper; 307. Arc-shaped scraper; 308. First brush; 309. Second brush; 310. Servo motor;

[0036] 4. Lifting and adjusting mechanism; 401. Support base shell; 402. Rotating retaining hole; 403. Threaded retaining ring; 404. Lifting stud; 405. Anti-detachment circular plate; 406. External gear ring; 407. Transmission gear; 408. AC motor; 409. Auxiliary support plate. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Please see Figures 1-9 This invention provides a technical solution: an automatic dosing device for routine water analysis tests in power plants, comprising a test water tank 1 for mixing routine water with reagents, an automatic dosing mechanism 2 located on the outer periphery of the test water tank 1, the automatic dosing mechanism 2 including a metering pump 201, a metering instrument 202 disposed on one side of the metering pump 201, a connected reagent cylinder 203 disposed on the top of the metering pump 201, a dosing timer 211 disposed on one outer wall of the test water tank 1, a PLC controller 212 disposed below the dosing timer 211, and an observation window 213 disposed on one side of the test water tank 1, and the PLC controller... The device 212 is located on one side of the observation window 213. The top of the reagent cylinder 203 is provided with a threaded inlet pipe 204. The top of the threaded inlet pipe 204 is threadedly connected to a matching threaded cap 205. A liquid level window 206 is provided on one side of the reagent cylinder 203. A dosing pipe 207 is provided on the other side of the metering pump 201. A connecting pipe 208 is provided on the outer periphery of the top of the test water tank 1. The connecting pipe 208 is flanged and connected to the dosing pipe 207. An installation plate 209 that matches the bottom of the metering pump 201 is provided on the outer wall of the test water tank 1. A drain pipe 210 is provided on the bottom of the other side of the test water tank 1.

[0039] During the chemical water analysis test in the power plant, the operator uses an automatic dosing device for conventional chemical water analysis. First, the required chemical reagents are prepared and poured into the reagent cylinder 203. A screw cap 205 facilitates the sealing of the threaded inlet pipe 204. According to the test dosing sequence, the corresponding program control is initiated by the PLC controller 212. The program control device starts the metering pump 201 to extract the reagent, which is then injected into the water sample to be tested in the test water tank 1 through the dosing pipe 207 and connecting pipe 208. The dosing timer 211 starts timing according to the test requirements in the program control device. After the required reaction time is reached, the program control device starts the metering pump 201 to extract the second reagent and inject it into the water sample to be tested. This process continues until all test reagents are added sequentially. Using the automatic dosing device for conventional chemical water analysis in the power plant allows for precise control of reagent dosage and chemical reaction time, reducing test errors, improving test accuracy, and reducing the workload of chemical analysts.

[0040] The chemical mixing mechanism 3 is located inside the test water tank 1. The chemical mixing mechanism 3 includes a connecting slot 301. A matching connecting cover plate 302 is fitted onto the inner wall of the connecting slot 301. A drive shaft 305 is rotatably mounted on the inner wall of the connecting cover plate 302. A ring-shaped cleaning scraper 306 is respectively provided at the top and bottom of the drive shaft 305. An arc-shaped scraper 307 is provided at one end of the cleaning scraper 306. A first brush 308 is provided on one side of the arc-shaped scraper 307. A second brush 309 is provided on one side of the top cleaning scraper 306. The connecting cover plate 302 is connected and fixed to the connecting slot 301 by fastening bolts 303. A water inlet pipe 304 is provided on one side of the top of the connecting cover plate 302. A servo motor 310 is provided on the top of the connecting cover plate 302. The top end of the drive shaft 305 is connected and fixed to the drive end of the servo motor 310.

[0041] In routine water analysis tests at power plants, it is sometimes necessary to mix reagents. This can be controlled by a touch-screen PLC controller 212, which starts and stops the mixture. A servo motor 310 drives a drive shaft 305 to rotate, which in turn drives a stirring rod to mix the reagents, facilitating the reaction. After the test, the liquid is drained through a drain pipe 210. The drive shaft 305 drives a cleaning scraper 306 to clean the bottom of the test water tank 1 and the bottom of the snap-fit ​​cover 302. An arc-shaped scraper 307 is used to clean the side walls of the test water tank 1. Both the cleaning scraper 306 and the arc-shaped scraper 307 have beveled edges on one side to remove dirt. A first brush 308 is used to scrub the side walls, and a second brush 309 is used to scrub the bottom of the snap-fit ​​cover 302. Repeated scraping and scrubbing facilitate the cleaning of the test water tank 1. The snap-fit ​​cover 302 can also be disassembled for periodic cleaning of the internal parts.

[0042] The lifting and adjusting mechanism 4 is located below the test water tank 1. The lifting and adjusting mechanism 4 includes a supporting base shell 401. The top of the supporting base shell 401 is provided with a rotating locking hole 402. A threaded retaining ring 403 is rotatably provided on the inner wall of the rotating locking hole 402. An external gear ring 406 is provided on the outer periphery of the threaded retaining ring 403. A transmission gear 407 is meshed on one side of the external gear ring 406. The bottom of the test water tank 1 is provided with a lifting stud 404 that is adapted to the threaded retaining ring 403. An anti-detachment circular plate 405 is provided at the bottom end of the lifting stud 404. An auxiliary support plate 409 is provided on one side of the supporting base shell 401. An AC motor 408 is provided on the top of one side of the auxiliary support plate 409. The drive end of the AC motor 408 is engaged and fixed with the transmission gear 407.

[0043] The AC motor 408 drives the transmission gear 407 to rotate, which in turn drives the external gear ring 406 to rotate. This, in turn, drives the threaded retaining ring 403 to rotate inside the rotating retaining hole 402, facilitating the control of the lifting stud 404 and thus adjusting the lifting of the test water tank 1. The supporting base 401 provides bottom support, and the auxiliary support plate 409 supports the AC motor 408 on one side and is located below the drain pipe 210 on the other side to support the experimental measuring cup.

[0044] Working Principle: During the chemical water analysis test in the power plant, the operator uses the automatic dosing device for conventional chemical water analysis. First, the required chemical reagents are prepared and poured into the reagent cylinder 203. The threaded cap 205 facilitates the sealing of the threaded inlet pipe 204. According to the test dosing sequence, the PLC controller 212 initiates the corresponding program control. The program control device starts the metering pump 201 to extract the reagent and inject it into the water sample to be tested in the test water tank 1 through the dosing pipe 207 and connecting pipe 208. The dosing timer 211 starts timing according to the test requirements in the program control device. After the required reaction time is reached, the program control device starts the metering pump 201 to extract the second reagent and inject it into the water sample to be tested, until the test reagents are added sequentially. Using the automatic dosing device for conventional chemical water analysis in the power plant allows for precise control of reagent dosage and chemical reaction time, reducing... To reduce experimental errors, improve experimental accuracy, and reduce the workload of chemical analysts, the cleaning scraper 306 driven by the drive shaft 305 cleans and scrapes the bottom of the test water tank 1 and the bottom of the snap-fit ​​cover 302. The arc-shaped scraper 307 facilitates the scraping and cleaning of the side walls of the test water tank 1. Both the cleaning scraper 306 and the arc-shaped scraper 307 have beveled edges on one side to facilitate the removal of stains. The first brush 308 facilitates the brushing of the side walls, and the second brush 309 facilitates the brushing of the bottom of the snap-fit ​​cover 302. Through repeated scraping and brushing, the test water tank 1 is easily cleaned. The AC motor 408 drives the drive gear 407 to rotate, which in turn drives the outer gear ring 406 to rotate, thereby driving the threaded retaining ring 403 to rotate inside the rotating retaining hole 402, facilitating the control of the lifting stud 404 and thus adjusting the height of the test water tank 1.

[0045] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, and is not intended to limit the scope of protection of the present invention. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of the present invention do not depart from the essence and scope of the technical solution of the present invention.

Claims

1. An automatic dosing device for routine water analysis tests in power plants, characterized in that, include: Test water tank (1) is used to mix conventional chemical water and reagents from the power plant; An automatic dosing mechanism (2) is located on the outer periphery of the test water tank (1). The automatic dosing mechanism (2) includes a metering pump (201), a metering instrument (202) is provided on one side of the metering pump (201), a connected reagent cylinder (203) is provided on the top of the metering pump (201), a dosing timer (211) is provided on one side of the outer wall of the test water tank (1), and a PLC controller (212) is provided below the dosing timer (211). The chemical mixing mechanism (3) is located inside the test water tank (1). The chemical mixing mechanism (3) includes a connecting slot (301). The inner wall of the connecting slot (301) is fitted with a matching snap-fit ​​cover plate (302). The inner wall of the snap-fit ​​cover plate (302) is rotatably fitted with a drive shaft (305). The top and bottom of the drive shaft (305) are respectively provided with annularly distributed cleaning scrapers (306). One end of the cleaning scraper (306) is provided with an arc-shaped scraper (307). One side of the arc-shaped scraper (307) is provided with a first brush (308). The side of the cleaning scraper (306) at the top is provided with a second brush (309). The lifting and adjusting mechanism (4) is located below the test water tank (1).

2. The automatic dosing device for conventional water analysis in power plants according to claim 1, characterized in that, The lifting adjustment mechanism (4) includes a supporting base shell (401), the top of the supporting base shell (401) is provided with a rotating locking hole (402), the inner wall of the rotating locking hole (402) is rotatably provided with a threaded retaining ring (403), the outer periphery of the threaded retaining ring (403) is provided with an external gear ring (406), and a transmission gear (407) is meshed on one side of the external gear ring (406).

3. The automatic dosing device for conventional water analysis in power plants according to claim 1, characterized in that, The top of the medicine cylinder (203) is provided with a threaded inlet pipe (204) that is connected to it. The top of the threaded inlet pipe (204) is threadedly connected with a matching threaded cap (205). A liquid level window (206) is provided on one side of the medicine cylinder (203).

4. The automatic dosing device for conventional water analysis in power plants according to claim 1, characterized in that, A dosing pipe (207) is provided on the other side of the metering pump (201), and a connecting pipe (208) is provided on the outer periphery of the top of the test water tank (1), and the connecting pipe (208) is connected to the flange of the dosing pipe (207).

5. The automatic dosing device for conventional water analysis in power plants according to claim 1, characterized in that, The outer wall of the test water tank (1) is provided with an installation plate (209) that is compatible with the bottom of the metering pump (201), and the bottom of the other side of the test water tank (1) is provided with a drain pipe (210).

6. The automatic dosing device for conventional water analysis in power plants according to claim 1, characterized in that, An observation window (213) is provided on one side of the test water tank (1), and the PLC controller (212) is located on one side of the observation window (213).

7. An automatic dosing device for routine water analysis in power plants according to claim 2, characterized in that, An auxiliary support plate (409) is provided on one side of the supporting base shell (401), and an AC motor (408) is provided on the top of one side of the auxiliary support plate (409). The driving end of the AC motor (408) is engaged and fixed with the transmission gear (407).

8. An automatic dosing device for routine water analysis in power plants according to claim 1, characterized in that, The snap-fit ​​cover plate (302) is connected and fixed to the connecting slot (301) by setting fastening bolts (303), and a water inlet pipe (304) is provided on one side of the top of the snap-fit ​​cover plate (302).

9. An automatic dosing device for conventional water analysis in power plants according to claim 1, characterized in that, A servo motor (310) is provided on the top of the snap-fit ​​cover plate (302), and the top end of the transmission shaft (305) is connected and fixed to the drive end of the servo motor (310).

10. An automatic dosing device for routine water analysis in power plants according to claim 1, characterized in that, The bottom of the test water tank (1) is provided with a lifting stud (404) that is compatible with the threaded retaining ring (403), and the bottom end of the lifting stud (404) is provided with an anti-detachment circular plate (405).

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