Circulating cooling water dosing device for seagoing ship

Abstract

The utility model discloses a circulating water dosing device, and particularly relates to a cooling circulating water dosing device of a ship. According to the structure, a first one-way valve, a first flow meter and a first stop valve are arranged on a branch water conveying pipeline communicated with a clean water tank, a second one-way valve, a second flow meter and a second stop valve are arranged on branch chemical conveying pipelines communicated with chemical tanks, and the branch water conveying pipeline and the branch chemical conveying pipelines are communicated with a main chemical conveying pipeline. The liquid outlet end of the main pesticide conveying pipeline is connected with a pesticide mixing tank, a pesticide mixing pump is installed on the main pesticide conveying pipeline, the pesticide mixing tank is communicated with a circulating water system through a pesticide outlet pipeline, a third one-way valve, a third stop valve and a pesticide injection pump are arranged on the pesticide outlet pipeline, and a water quality online analyzer is arranged in the circulating water system. And the flowmeters, the stop valves, the medicine mixing pump, the medicine injection pump, the water quality online analyzer and the low liquid level detector are connected with a control system. The cooling circulating water dosing device can respond to water quality change in real time, generate a formula and complete multi-agent proportioning.

Description

Technical Field

[0001] The utility model relates to a circulating water dosing device, in particular to a cooling circulating water dosing device for a sea vessel. Background Art

[0002] The cooling circulating water system of seagoing vessels needs to add chemicals regularly to maintain the healthy state of water quality and avoid equipment damage caused by poor water quality. At present, most of the dosing devices for circulating water systems in existing applications add fixed-ratio, fixed-dose drugs to the circulating water system at a fixed cycle. Such dosing equipment can help the circulating water system meet water quality requirements in most cases, but it is far from maintaining high-quality water quality, especially when the environment in which the circulating water system is located changes, such as when the ambient temperature changes, causing the reproduction rate of algae and fungi in the water to change, when pollutants in the surrounding environment change with the flow of the atmosphere and affect the water quality, and when the quality of the supplementary water itself changes, they will cause the water quality of the circulating water to change irregularly. These fixed-cycle, fixed-ratio, fixed-dose dosing devices cannot monitor water quality changes in real time, or even if the water quality is monitored, they can only execute the preset fixed-ratio drug dosage, and cannot accurately adjust the drug ratio in real time according to the water quality conditions, and cannot be well applied to applications that are sensitive to changes in circulating water quality. Therefore, developing a highly intelligent dosing device that can respond to water quality changes in real time, automatically generate formulas, and automatically complete the proportioning of multiple agents has become a technical problem that technical personnel in this field urgently need to solve. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a cooling circulating water dosing device for a sea vessel, which can respond to water quality changes in real time, automatically generate formulas, and automatically complete multi-agent proportioning.

[0004] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

[0005] A cooling circulating water dosing device for a sea vessel.

[0006] The cooling circulating water dosing system of a seagoing vessel comprises a control system, a drug injection pump, a drug tank, a circulating water system and a low liquid level detector, wherein a first non-return valve, a first flow meter and a first shut-off valve are arranged on a branch water delivery pipeline connected to a clean water tank, a second non-return valve, a second flow meter and a second shut-off valve are arranged on a branch drug delivery pipeline connected to each drug tank, the branch water delivery pipeline and each branch drug delivery pipeline are connected to a main drug delivery pipeline, the liquid outlet of the main drug delivery pipeline is connected to a drug mixing tank, a drug mixing pump is installed on the main drug delivery pipeline, the drug mixing tank is connected to the circulating water system through a drug outlet pipeline, a third non-return valve, a third shut-off valve and a drug injection pump are arranged on the drug outlet pipeline, an online water quality analyzer is arranged in the circulating water system, and each flow meter, shut-off valve, mixing pump, drug injection pump, online water quality analyzer and low liquid level detector are connected to the control system.

[0007] Preferably, a low liquid level detector is installed in each of the clean water tank, the medicine mixing tank and the medicine tank.

[0008] Preferably, an agitator is installed on the medicine mixing tank, and the agitator is connected to the control system.

[0009] Preferably, the specific structure of the above control system is as follows: the controller is connected to the IO slave station and the engineer station through a network line communication, and the IO slave station is integrated with the digital input module, the digital output module, and the analog input module on the circuit main board.

[0010] Preferably, the water quality online analyzer disposed in the circulating water system is connected to the analog input module of the control system via a power transmission line and a signal bus.

[0011] Preferably, the clean water tank, the mixed medicine tank and each medicine tank are provided with a low liquid level detector, and the low liquid level detector is connected to the digital input module of the control system through a power transmission line and a signal bus.

[0012] Preferably, the first flow meter and each second flow meter are connected to an analog input module of the control system via a power transmission line and a signal bus.

[0013] Preferably, the first shut-off valve, each second shut-off valve and the third shut-off valve are connected to the digital output module via a power transmission line and a signal bus, and the drug mixing pump and the agitator are connected to the digital output module of the control system via a power transmission line and a signal bus.

[0014] Preferably, the injection pump is connected to the frequency converter via a power transmission line and a signal bus, and the frequency converter is connected to the controller of the control system via an industrial Ethernet cable.

[0015] Preferably, a filter screen is installed in each of the clean water tank, the medicine mixing tank and the medicine tank.

[0016] Due to the adoption of the above technical solution, the utility model has the following characteristics and effects:

[0017] The utility model is a cooling circulating water dosing device for seagoing vessels that can respond to water quality changes in real time, automatically generate formulas, and automatically complete the proportioning of multiple agents. It can respond to monitoring data in real time, make timely adjustments, always keep the circulating water quality in a relatively good state, and make the water quality fluctuation very small, so as to more effectively protect the equipment and pipelines. Each agent has an independent outlet pipeline and control valve, which can easily realize the dosing of multiple types of agents in any proportion under any water quality conditions, thereby meeting the vast majority of application scenarios. Since the agent proportioning is carried out according to the real-time water quality conditions, the effective action rate of the agent can be improved, thereby saving the amount of agent used. The mixing pump adopts variable frequency control, adaptive dynamic change of the dosing pipeline, and adjusts the output power of the mixing pump, so that the flow rate of the agent involved in the pump suction is always stable, so that the measurement of the agent is accurate, and finally ensures the high-precision realization of the proportion. The whole process does not require human participation, thereby saving labor costs and avoiding other losses caused by negligence in manual supervision. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The utility model is a structural schematic diagram of a cooling circulating water dosing device for a sea vessel.

[0019] In the figure: 1. controller; 2. IO slave station; 3. digital input module; 4. digital output module; 5. analog input module; 6. frequency converter; 7. engineer station; 8. signal bus; 9. first one-way valve; 10. first flow meter; 11. first shut-off valve; 12. clean water tank; 13. drug mixing pump; 14. main drug delivery pipeline; 15. second one-way valve; 16. second flow meter; 17. second shut-off valve; 18. drug mixing tank; 19. agitator; 20. third one-way valve; 21. drug delivery pipeline; 22. third shut-off valve; 23. drug injection pump; 24. phosphate online analyzer; 25. water quality online analyzer; 26. hardness online analyzer; 27. phenolphthalein alkalinity online analyzer; 28. reagent tank; 29. ​​circulating water system; 30. filter; 31. low liquid level detector. DETAILED DESCRIPTION

[0020] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] like Figure 1As shown, the utility model is a cooling circulating water dosing device for a sea vessel, which includes a control system, a drug injection pump 23, a drug tank 28, a circulating water system 29, and a low liquid level detector 31, wherein a filter screen 30 and a low liquid level detector 31 are installed in each of the clean water tank 12, the mixed drug tank 18 and the drug tank 28, a first one-way valve 9, a first flow meter 10 and a first shut-off valve 11 are arranged on the branch water delivery pipeline of the clean water tank 12, a second one-way valve 15, a second flow meter 16, and a second shut-off valve 17 are arranged on the branch drug delivery pipeline of each drug tank 28, the branch water delivery pipeline and each branch drug delivery pipeline are connected to the main drug delivery pipeline 14, and the liquid outlet end of the main drug delivery pipeline 14 is connected to the mixed drug tank 18 A drug mixing pump 13 is installed on the main drug delivery pipeline 14, a stirrer 19 is installed on the drug mixing tank 18, and the stirring blades of the stirrer 19 are arranged in the drug mixing tank 18. The drug mixing tank 18 is connected with the circulating water system 29 through the drug outlet pipeline 21. The drug outlet pipeline 21 is provided with a third one-way valve 20, a third shut-off valve 22 and a drug injection pump 23. An online water quality analyzer is arranged in the circulating water system 29. The online water quality analyzer includes an online phosphate analyzer 24, an online water quality analyzer 25, an online hardness analyzer 26 and an online phenolphthalein alkalinity analyzer 27. Each flow meter, shut-off valve, drug mixing pump, stirrer, drug injection pump, online water quality analyzer, and low liquid level detector 31 are connected to the control system.

[0022] The specific structure of the control system is as follows: the controller 1 is connected to the IO slave station 2 and the engineer station 7 through the industrial Ethernet line communication, the IO slave station 2 is integrated with the digital input module 3, the digital output module 4, and the analog input module 5 on the circuit board, the phosphate online analyzer 24, the water quality online analyzer 25, the hardness online analyzer 26 and the phenolphthalein alkalinity online analyzer 27 arranged in the circulating water system 29 are connected to the analog input module 5 through the transmission line and the signal bus 8, and the low liquid level detectors 31 arranged in the clean water tank 12, the mixing tank 18 and each reagent tank 28 are connected to the analog input module 5 through the transmission line and the signal bus 8. The electrical circuit and signal bus 8 are connected to the digital input module 3 through the transmission line, the first flow meter 10 and each second flow meter 16 are connected to the analog input module 5 through the transmission line and signal bus 8, the first shut-off valve 11, each second shut-off valve 17 and the third shut-off valve 22 are connected to the digital output module 4 through the transmission line and signal bus 8, the drug mixing pump 13 and the agitator 19 are connected to the digital output module 4 through the transmission line and signal bus 8, the drug injection pump 23 is connected to the frequency converter 6 through the transmission line and signal bus 8, and the frequency converter 6 is connected to the controller 1 through industrial Ethernet.

[0023] As mentioned above, as a preferred solution, the controller 1 in the utility model adopts Siemens S7-1511-1PN; the IO slave station 2 adopts Siemens ET200SP IM 155-6 PNST; the digital input module 3 adopts Siemens 6ES7 131-6BH01-0BA0 module; the digital output module 4 adopts Siemens 6ES7 132-6BH01-0BA0 module; the analog input module 5 adopts Siemens 6ES7 134-6GF00-0AA1 module; the inverter 6 adopts Siemens CU250S-PN; the signal bus 8 is an IO CABLE bus; the engineer station 7 is a host computer, which is composed of a host and a mouse, a keyboard, and a printer. The host is Dell DELL T5820W2223; the first one-way valve 9, the second one-way valve 15 and the third one-way valve 20 are one-way check valves; the first flowmeter 10 and the second flowmeter 16 are Tektronix JTKDB series Delkaba flowmeters; the first cut-off valve 11, the second cut-off valve 17 and the third cut-off valve 22 are Duhol DHF21UPVC; the mixing pump 13 is Ailipu-JXM-A-1.4 / 1.0; the agitator 19 is Shenyilai BLD11; the injection pump 2 3 adopts Ailipu-JXM-A-1.4 / 1.0; the phosphate online analyzer 24 adopts Siemens ERUN-SZ-6070L; the water quality online analyzer 25 adopts Siemens ERUN-SZ-MU600; the hardness online analyzer 26 adopts Siemens ERUN-SZ-3085S; the phenolphthalein alkalinity online analyzer 27 adopts Siemens ERUN-SZ-3086LF; the liquid level detector 31 adopts Kelile KYL-DJ60.

[0024] The cooling circulating water dosing device of the utility model for seagoing vessels is composed of the following parts:

[0025] Engineer station 7 is the host computer, which consists of a host computer, a mouse, a keyboard, and a printer. The host computer is Dell T5820 W2223. The water quality analysis data is transmitted to engineer station 7 through the water quality analyzer communication. Engineer station 7 collects, monitors and analyzes the water quality data in real time. PLC controller 1 and IO slave station 2, digital input module 3, digital output module 4, analog input module 5, inverter 7, it converts the intelligent formula and control strategy obtained from engineer station 7 into various execution signals and outputs them to various actuators. The controller will realize the dosing process control and maintenance process control of the equipment.

[0026] The clean water tank is part of the formula ingredients. As a solvent for the mixed medicine, it has independent outlet pipelines, flow meters, shut-off valves, and one-way valves. The medicine tank can be set according to the type of medicine, 1-6, for storing various medicines, and the number of medicines can be adjusted according to the process needs. Independent low liquid level detectors are installed in the clean water tank and each medicine tank. The low liquid level detector is a liquid level detection sensor. When the liquid level reaches the low limit, the system outputs a low liquid level alarm signal to remind the staff to add clean water or replace the medicine in the medicine tank. There are independent filters in the clean water tank, each medicine tank and the mixed medicine tank. The filter can prevent impurities in the clean water and suspended particles in the medicine from damaging the pump. There are independent flow meters in the clean water tank and each medicine tank to measure the flow of the medicine output. There are independent shut-off valves on the outlet pipelines of the clean water tank and each medicine tank to cut off the output of the medicine. The clean water tank and each medicine tank have independent one-way valves. The one-way valve is a check valve to prevent liquid reflux. For the drug mixing pump, the controller will adapt to the dynamically switched drug pipelines and adjust the output power of the pump according to the average flow rate to ensure that no matter how the drug pipelines involved in the pump suction are dynamically switched, the flow rates of these pipelines can always remain stable, thereby ensuring the accuracy of the ratio.

[0027] The inlet pipeline and filter of the injection pump, after the stirring is completed, will start the injection pump to inject the liquid medicine into the circulating water system network. The outlet pipeline, check valve and shut-off valve of the injection pump are used to protect the injection pump from the pressure shock of the circulating water system. The low liquid level detector in the mixing tank will stop the injection of medicine when the liquid level reaches the pump stop level, marking the completion of the injection process. After the addition of medicine is completed, the circulating water system needs a certain amount of time to neutralize the medicine, which we call the reaction stage. The system will determine whether the reaction stage is completed. After completion, the system will resume water quality monitoring and enter the monitoring stage to start real-time monitoring and real-time response to water quality.

Claims

1. A cooling circulating water dosing device for a seagoing vessel, comprising a control system, a dosing pump (23), a dosing tank (28), a circulating water system (29), and a low liquid level detector (31), wherein the device is characterized in that A first non-return valve (9), a first flow meter (10) and a first shut-off valve (11) are provided on the branch water delivery pipeline connected to the clean water tank (12); a second non-return valve (15), a second flow meter (16) and a second shut-off valve (17) are provided on the branch drug delivery pipeline connected to each of the medicine tanks (28); the branch water delivery pipeline and each of the branch drug delivery pipelines are connected to the main drug delivery pipeline (14); the liquid outlet end of the main drug delivery pipeline (14) is connected to the drug mixing tank (18); A drug mixing pump (13) is installed on the drug pipeline (14); the drug mixing tank (18) is connected to the circulating water system (29) through the drug outlet pipeline (21); a third one-way valve (20), a third shut-off valve (22) and a drug injection pump (23) are provided on the drug outlet pipeline (21); an online water quality analyzer (25) is provided in the circulating water system (29); and the flow meters, the shut-off valves, the drug mixing pump, the drug injection pump, the online water quality analyzer and the low liquid level detector are connected to the control system.

2. The cooling circulating water dosing device for seagoing vessels according to claim 1, characterized in that The medicine mixing tank (18) is provided with a stirrer (19), and the stirrer (19) is connected to a control system.

3. The cooling circulating water dosing device for seagoing vessels according to claim 1, characterized in that The specific structure of the control system is as follows: the controller (1) is connected to the IO slave station (2) and the engineer station (7) through a network line communication, and the IO slave station (2) is integrated with the digital input module (3), the digital output module (4), and the analog input module (5) on a circuit main board.

4. The cooling circulating water dosing device for seagoing vessels according to claim 1, characterized in that The water quality online analyzer arranged in the circulating water system (29) is connected to the analog input module (5) of the control system via a power transmission line and a signal bus (8).

5. The cooling circulating water dosing device for seagoing vessels according to claim 1 or 4, characterized in that The water quality online analyzer comprises a phosphate online analyzer (24), a water quality online analyzer (25), a hardness online analyzer (26) and a phenolphthalein alkalinity online analyzer (27).

6. The cooling circulating water dosing device for seagoing vessels according to claim 1, characterized in that The clean water tank (12), the medicine mixing tank (18), and each medicine tank (28) are provided with a low liquid level detector (31), and each low liquid level detector (31) is connected to a digital input module (3) of the control system via a power transmission line and a signal bus (8).

7. The cooling circulating water dosing device for seagoing vessels according to claim 1, characterized in that The first flow meter (10) and each second flow meter (16) are connected to an analog input module (5) of a control system via a power transmission line and a signal bus (8).

8. The cooling circulating water dosing device for seagoing vessels according to claim 1, characterized in that The first shut-off valve (11), each second shut-off valve (17) and the third shut-off valve (22) are connected to the digital output module (4) via a power transmission line and a signal bus (8), and the drug mixing pump (13) and the stirrer (19) are connected to the digital output module (4) of the control system via a power transmission line and a signal bus (8).

9. The cooling circulating water dosing device for seagoing vessels according to claim 1, characterized in that The drug injection pump (23) is connected to the frequency converter (6) via a power transmission line and a signal bus (8), and the frequency converter (6) is connected to the controller (1) of the control system via industrial Ethernet.

10. The cooling circulating water dosing device for seagoing vessels according to claim 1 or 6, characterized in that A filter screen (30) is installed in each of the clean water tank (12), the medicine mixing tank (18) and the medicine tank (28).

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