Condensate contamination prevention device based on conductivity detection

Abstract

The present application relates to condensate water treatment technical field, specifically provide a kind of condensate water pollution prevention device based on conductivity detection, conductivity detection sensor is arranged in condensate water pipeline;Condensate water pipeline and sewage tank are connected with first branch pipe, and condensate water pipeline and condensate tank are connected with second branch pipe;Sewage valve is provided on first branch pipe, and recovery valve is provided on second branch pipe;Control center is connected with conductivity detection sensor, receives conductivity detection signal, generates valve control signal, controls sewage valve to open, recovery valve to close, or controls sewage valve to close, recovery valve to open;Sewage tank and purification tank are connected with third branch pipe.Compared with traditional recovery device, the pollution of condensate water can be continuously and effectively detected, and the polluted condensate water can be treated in time, the utilization rate of water resources is improved, and the production cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of industrial condensate treatment, specifically to a condensate pollution prevention device based on conductivity detection. Background Technology

[0002] In chemical production, a large amount of steam is usually used for heating, which generates a large amount of condensate. When recycling this condensate, it is necessary to ensure that it is not contaminated to guarantee the quality and safety of subsequent use. This can not only significantly improve water resource utilization but also reduce production costs.

[0003] However, condensate is easily contaminated during collection and transmission. Traditional detection methods often suffer from latency, and anti-contamination measures have many shortcomings, making it difficult to accurately and promptly determine the contamination status of condensate and effectively prevent contamination. Conductivity is an important parameter for detecting water purity and can be used as an indicator of whether condensate is contaminated. Currently, there are generally two methods for detecting the conductivity of liquid media in chemical production: insertion type and flow-through type. Insertion type has poor timeliness, so flow-through type is used. The detection element is installed in a suitable position in the pipeline, allowing condensate to flow through it for detection. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides a condensate pollution prevention device based on conductivity detection to solve the above-mentioned technical problems.

[0005] In a first aspect, the present invention provides a condensate pollution prevention device based on conductivity detection, including a condensate pipe, a conductivity detection sensor, a control center, a sewage valve, a sewage tank, a recovery valve, a condensate tank, and a purification tank;

[0006] The conductivity sensor is arranged inside the condensate pipe;

[0007] A first branch pipe connects the condensate pipe and the sewage tank, and a second branch pipe connects the condensate pipe and the condensate tank.

[0008] The first branch pipe is equipped with the sewage valve, and the second branch pipe is equipped with the recovery valve;

[0009] The control center is connected to the conductivity detection sensor, receives conductivity detection signals, generates valve control signals, and controls the sewage valve to open and the recovery valve to close, or controls the sewage valve to close and the recovery valve to open.

[0010] A third branch pipe connects the sewage tank and the purification tank.

[0011] In one optional implementation, the control center is provided with a comparator circuit and a control circuit. The comparator circuit receives and compares the conductivity detection signal with the threshold signal, and outputs high and low level signals. The control circuit receives the high and low level signals and generates a valve control signal.

[0012] In an optional implementation, a timer is provided on the recovery valve and the sewage valve.

[0013] In an optional implementation, the control center is further equipped with a signal discrimination circuit that generates a delay trigger signal when it receives a valve closing control signal for the sewage valve and a valve opening control signal for the recovery valve.

[0014] In one optional embodiment, the first branch pipe is inclined, and water flows from the condensate pipe into the sewage tank along the first branch pipe under the action of gravity, and the inclination angle of the second branch pipe is much smaller than that of the first branch pipe.

[0015] In an optional embodiment, both the sewage tank and the condensate tank are equipped with level sensors and level alarm components.

[0016] In one optional embodiment, a filter assembly is provided on the side of the second branch pipe that is connected to the condensate pipe, and water flows through the filter assembly into the second branch pipe.

[0017] In an optional embodiment, a fourth branch pipe is provided between the purification tank and the condensate tank, and a conductivity detection sensor is provided inside the purification tank.

[0018] The beneficial effects of this invention are as follows: the condensate pollution prevention device based on conductivity detection provided by this invention, by arranging conductivity detection sensors in the condensate pipe, allows the control center to control the opening and closing of sewage valves and recovery valves according to the detection signals, which can promptly treat polluted condensate and prevent it from entering the condensate pool and affecting recycling; at the same time, the sewage pool is connected to the purification pool, which can further treat the sewage, improve water resource utilization, reduce production costs, effectively prevent condensate pollution, and achieve reasonable sewage treatment.

[0019] Furthermore, the design principle of this invention is reliable, the structure is simple, and it has a very wide range of application prospects. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic block diagram of a condensate contamination prevention device based on conductivity detection according to an embodiment of the present invention.

[0022] Key reference numerals in the attached drawings: 1. Condensate pipe; 2. Conductivity sensor; 3. Sewage valve; 4. First branch pipe; 5. Recovery valve; 6. Second branch pipe; 7. Sewage tank; 8. Condensate tank; 9. Fourth branch pipe; 10. Purification tank; 11. Third branch pipe. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solutions of this invention, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this invention.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0025] like Figure 1 As shown, the device includes a condensate pipe 1, a conductivity sensor 2, a control center, a sewage valve 3, a sewage tank 7, a recovery valve 5, a condensate tank 8, and a purification tank 10.

[0026] The conductivity sensor 2 is arranged inside the condensate pipe 1;

[0027] A first branch pipe 4 connects the condensate pipe 1 and the sewage tank 7, and a second branch pipe 6 connects the condensate pipe 1 and the condensate tank 8.

[0028] The first branch pipe 4 is equipped with the sewage valve 3, and the second branch pipe 6 is equipped with the recovery valve 5;

[0029] The control center is connected to the conductivity detection sensor 2, receives conductivity detection signals, and generates valve control signals. Specifically, when the conductivity is high, it generates a control signal to open the sewage valve 3 and a control signal to close the recovery valve 5, thereby controlling the sewage valve 3 to open and the recovery valve 5 to close. When the conductivity is low, it generates a control signal to open the recovery valve 5 and a control signal to close the recovery valve 5, thereby controlling the sewage valve 3 to close and the recovery valve 5 to open.

[0030] A third branch pipe 11 connects the sewage tank 7 and the purification tank 10.

[0031] Under normal conditions (low conductivity): condensate from steam flows in condensate pipe 1 and is detected by conductivity sensor 2. If the conductivity is lower than a set threshold, the control center receives the signal and generates a control signal to open recovery valve 5 and close wastewater valve 3. At this time, the condensate flows into condensate pool 8 through the second branch pipe 6, awaiting subsequent recycling.

[0032] In polluted conditions (high conductivity): When the conductivity sensor 2 detects that the conductivity of the condensate is higher than the set threshold, the control center receives the signal and generates a control signal, causing the sewage valve 3 to open and the recovery valve 5 to close. The condensate then flows into the sewage tank 7 through the first branch pipe 4. Afterwards, the sewage in the sewage tank 7 flows into the purification tank 10 for treatment through the third branch pipe 11.

[0033] Optionally, as an embodiment of the present invention, a comparator circuit and a control circuit are provided in the control center. The comparator circuit uses an LM339 chip. The conductivity detection signal output by the conductivity sensor 2 is connected to one input terminal of the comparator. Two resistors are connected between the power supply voltage and ground, and a stable threshold voltage is obtained at their connection point. This threshold voltage is then used as the threshold signal and connected to the other input terminal of the comparator. The resistor value is reasonably selected to adjust the threshold voltage according to the requirements of the condensate conductivity in the actual application. The comparator circuit outputs high and low level signals. The control circuit receives the high and low level signals and generates valve control signals. The control circuit uses a combination of logic gate circuits and drive circuits. When the comparator outputs a high level signal, it is converted into a signal to control the opening of the sewage valve 3 and the closing of the recovery valve 5 through the logic gate circuit. When it outputs a low level signal, it is converted into a signal to control the opening of the recovery valve 5 and the closing of the sewage valve. In the drive circuit, when the control signal is high, the transistor conducts, the relay coil is energized, and the contacts close, thereby controlling the opening and closing of the valves.

[0034] Optionally, as an embodiment of the present invention, the recovery valve 5 and the sewage valve 3 are equipped with timers. When a decrease in conductivity is detected, in order to ensure the quality of the condensate entering the condensate tank 8, the sewage valve 3 is delayed in closing and the recovery valve 5 is delayed in opening.

[0035] Optionally, as an embodiment of the present invention, the control center is further provided with a signal discrimination circuit, which generates a delay trigger signal when it receives the valve closing control signal of sewage valve 3 and the valve opening control signal of recovery valve 5.

[0036] Specifically, the signal discrimination circuit includes a comparator circuit, a logic gate circuit, and a trigger circuit. The signals from the sewage valve 3 closing and the recovery valve 5 opening are respectively connected to the input of the comparator and compared with a preset reference voltage. The reference voltage is set according to the high and low level range of the actual signal to accurately distinguish the valid state of the signal. When the signals from the sewage valve 3 closing and the recovery valve 5 opening simultaneously meet specific conditions, a valid trigger signal is output through the logic gate circuit. A 74HC123 monostable multivibrator chip is used. When the logic judgment circuit outputs a valid trigger signal, the monostable multivibrator is triggered, outputting a fixed-width pulse signal, which serves as the trigger signal for the delay unit.

[0037] The signals from the sewage valve 3 (closed) and the recovery valve 5 (open) are input to the comparator circuit via the input interface. The comparator compares the input signals with a reference voltage and outputs a high-level or low-level signal to indicate the valid state of the signal. The logic gate circuit outputs a high-level trigger signal only when both the sewage valve 3 (closed) signal and the recovery valve 5 (open) signal are high-level (open). When the logic judgment circuit outputs a valid trigger signal, the monostable multivibrator is triggered and begins timing. During timing, the monostable multivibrator outputs a high-level pulse signal, which serves as the trigger signal for the delay unit, controlling the delay unit to start operating.

[0038] Optionally, as an embodiment of the present invention, the first branch pipe 4 is inclined, and the water flows from the condensate pipe 1 into the sewage tank 7 along the first branch pipe 4 under the action of gravity, and the inclination angle of the second branch pipe 6 is much smaller than that of the first branch pipe 4.

[0039] The first branch pipe 4 is inclined, allowing water to flow more smoothly from the condensate pipe 1 into the sewage tank 7 under the influence of gravity, and effectively preventing the spread of pollution. The inclined angle design enables the sewage discharge process to rely on gravity, reducing the problem of water flow obstruction caused by pipe resistance.

[0040] The smaller inclination angle of the second branch pipe 6 also makes it easier for maintenance personnel to check the operation of the recovery system, ensure that the condensate recovery process is normal, and allow the water to flow smoothly into the condensate pool 8, thus minimizing the impact on the equipment and structure inside the pool.

[0041] Optionally, as an embodiment of the present invention, both the sewage tank 7 and the condensate tank 8 are equipped with a liquid level sensor and a liquid level alarm component. When the liquid level in the condensate tank 8 reaches a preset condition, the liquid level alarm component will sound an alarm, prompting staff to promptly proceed with the further processing of the condensate in the condensate tank 8. When the liquid level in the sewage tank 7 reaches a preset condition, the liquid level alarm component will sound an alarm, prompting staff to transfer the water from the sewage tank 7 into the water purification tank, and begin water purification treatment in the water purification tank.

[0042] Real-time liquid level monitoring can prevent sewage and condensate from overflowing into the tank, avoiding environmental pollution and damage to equipment inside the tank; based on liquid level data, system operation can be optimized, sewage purification and condensate recovery can be rationally arranged, improving efficiency and reducing energy consumption; timely alarms can be triggered when the liquid level is abnormal, ensuring production safety and facilitating staff to quickly troubleshoot faults; and it can be connected to an automation system to achieve remote monitoring and management, improving management efficiency, reducing manual inspections, and providing data support for system optimization.

[0043] Optionally, as an embodiment of the present invention, a filter assembly is provided on the side of the second branch pipe 6 that is connected to the condensate pipe, and water flows through the filter assembly into the second branch pipe 6.

[0044] The incoming condensate is initially filtered to prevent impurities from accumulating at the inlet of the second branch pipe 6 when the recovery valve 5 is closed.

[0045] Optionally, as an embodiment of the present invention, a fourth branch pipe 9 is provided between the purification tank 10 and the condensate tank 8, and a conductivity detection sensor 2 is provided inside the purification tank 10. When the condensate in the purification tank 10 is purified and meets the conductivity standard, the condensate in the purification tank 10 is recycled back to the condensate tank 8 through the fourth branch pipe 9, and then proceeds to the next step of processing.

[0046] Specifically, the implementation principle of the above device is as follows: the condensate generated by steam flows in the condensate pipe 1, the conductivity detection sensor 2 detects its conductivity in real time, and transmits the detection signal to the control center;

[0047] The comparator circuit (using the LM339 chip) in the control center compares the conductivity detection signal with the threshold signal. If the conductivity is lower than the set threshold, it outputs a low-level signal.

[0048] The control circuit receives a low-level signal and converts it into a control signal through logic gates and a drive circuit, causing the recovery valve 5 to open and the sewage valve 3 to close.

[0049] The condensate undergoes initial filtration through the filter assembly on the second branch pipe 6 to prevent impurities from accumulating at the pipe opening. It then flows into the condensate tank 8 through the second branch pipe 6. A level sensor in the condensate tank 8 monitors the liquid level in real time. When the liquid level reaches a preset condition, the level alarm component sounds, and the condensate is then processed further by the staff.

[0050] If the conductivity is higher than the set threshold, the comparator circuit outputs a high-level signal.

[0051] The control circuit receives a high-level signal, converts it into a control signal, and causes the sewage valve 3 to open and the recovery valve 5 to close.

[0052] Under the influence of gravity, the contaminated condensate flows rapidly into the wastewater tank 7 through the inclined first branch pipe 4, preventing the spread of pollution. The liquid level sensor in the wastewater tank 7 monitors the liquid level in real time. When the liquid level reaches the preset condition, the liquid level alarm component sounds an alarm, and the staff puts the wastewater into the purification tank 10 through the third branch pipe 11.

[0053] The conductivity sensor 2 inside the purification tank 10 detects the conductivity of the condensate in the purification process in real time.

[0054] Once purification is complete and the condensate meets the conductivity standard, the condensate in purification tank 10 is recycled back to condensate tank 8 through the fourth branch pipe 9 for further processing.

[0055] When the conductivity is detected to decrease from high to low, in order to ensure the quality of the condensate entering the condensate tank 8, the timers on the recovery valve 5 and the sewage valve 3 take effect, delaying the closing of the sewage valve 3 and delaying the opening of the recovery valve 5.

[0056] The signal discrimination circuit in the control center, when it receives the valve closing control signal of sewage valve 3 and the valve opening control signal of recovery valve 5, generates a delay trigger signal through comparator circuit, logic gate circuit and trigger circuit (using 74HC123 monostable trigger chip) to control the delay to start working.

[0057] The same or similar parts between the various embodiments in this specification can be referred to mutually. In particular, the terminal embodiments are basically similar to the method embodiments, so the description is relatively simple, and the relevant parts can be referred to the description in the method embodiments.

[0058] In the several embodiments provided by this invention, it should be understood that the disclosed apparatus can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative. For instance, the division of modules is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple modules or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces, or indirect coupling or communication connection between systems or modules, and may be electrical, mechanical, or other forms.

[0059] The modules described as separate components may or may not be physically separate. The components shown as modules may or may not be physical modules; that is, they may be located in one place or distributed across multiple network modules. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0060] In addition, the functional modules in the various embodiments of the present invention can be integrated into one processing module, or each module can exist physically separately, or two or more modules can be integrated into one module.

[0061] Although the present invention has been described in detail with reference to the accompanying drawings and preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made to the embodiments of the present invention by those skilled in the art without departing from the spirit and essence of the invention, and such modifications or substitutions should all be within the scope of the present invention. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should also be covered within the protection scope of the present invention.

Claims

1. A condensate contamination prevention device based on conductivity detection, characterized in that: Includes condensate pipe (1), conductivity sensor (2), control center, sewage valve (3), sewage tank (7), recovery valve (5), condensate tank (8), and purification tank (10); The conductivity sensor (2) is arranged inside the condensate pipe (1); A first branch pipe (4) is connected between the condensate pipe (1) and the sewage tank (7), and a second branch pipe (6) is connected between the condensate pipe (1) and the condensate tank (8). The first branch pipe (4) is equipped with the sewage valve (3), and the second branch pipe (6) is equipped with the recovery valve (5). The control center is connected to the conductivity detection sensor (2), receives the conductivity detection signal, generates a valve control signal, and controls the sewage valve (3) to open and the recycling valve (5) to close, or controls the sewage valve (3) to close and the recycling valve (5) to open. A third branch pipe (11) connects the sewage tank (7) and the purification tank (10).

2. The condensate pollution prevention device based on conductivity detection as described in claim 1, characterized in that, The control center is equipped with a comparator circuit and a control circuit. The comparator circuit receives and compares the conductivity detection signal with the threshold signal, and outputs high and low level signals. The control circuit receives the high and low level signals and generates valve control signals.

3. The condensate pollution prevention device based on conductivity detection as described in claim 2, characterized in that, The recovery valve (5) and the sewage valve (3) are equipped with time delay devices.

4. The condensate pollution prevention device based on conductivity detection as described in claim 3, characterized in that, The control center is also equipped with a signal discrimination circuit, which generates a delay trigger signal when it receives the valve closing control signal of the sewage valve (3) and the valve opening control signal of the recovery valve (5).

5. The condensate pollution prevention device based on conductivity detection as described in claim 1, characterized in that, The first branch pipe (4) is inclined, and the water flows from the condensate pipe (1) into the sewage tank (7) along the first branch pipe (4) under the action of gravity. The inclination angle of the second branch pipe (6) is much smaller than that of the first branch pipe (4).

6. The condensate pollution prevention device based on conductivity detection as described in claim 1, characterized in that, Both the sewage tank (7) and the condensate tank (8) are equipped with level sensors and level alarm components.

7. The condensate pollution prevention device based on conductivity detection as described in claim 1, characterized in that, A filter assembly is provided on the side of the second branch pipe (6) that is connected to the condensate pipe, and water flows through the filter assembly into the second branch pipe (6).

8. The condensate pollution prevention device based on conductivity detection as described in claim 1, characterized in that, A fourth branch pipe (9) is provided between the purification tank (10) and the condensate tank (8), and a conductivity detection sensor (2) is provided inside the purification tank (10).

Images