Water circulation industrial control system

Abstract

The utility model discloses a water circulation industrial control system, which relates to the technical field of water circulation, and comprises a heat exchanger provided with a water inlet pipe, a water outlet pipe, a heat source inlet pipe and a heat source outlet pipe; the water inlet flow path is connected with the water inlet pipe; the water outlet flow path is connected with the water outlet pipe; the first detection piece is mounted on the water inlet flow path and is used for detecting the water quality in the water inlet flow path; the discharging assembly comprises a discharging valve and a discharging pipe which are connected, the discharging valve is installed on the water inlet flow path, arranged between the first detection part and the water inlet pipe and electrically connected with the first detection part, and the discharging valve is used for discharging water with unqualified water quality through the discharging pipe. The technical scheme provided by the utility model can solve the problem that waste water with more impurities enters the heat exchanger to be heated, so that the impurities are easily precipitated in a pipeline of the heat exchanger.

Description

Technical Field

[0001] The utility model relates to the technical field of water circulation, in particular to a water circulation industrial control system. Background Art

[0002] In many industrial processes, a large amount of waste heat is generated. If it is not used, it will cause a waste of energy. The heat exchanger can transfer this part of waste heat to the medium that needs to be heated and heat the medium. Heat exchangers are often used to heat water in industrial processes. In order to improve the utilization rate of water in industry, most industrial production processes will filter and purify the wastewater and then heat it through the heat exchanger for use.

[0003] However, when the heat exchanger heats the wastewater that is undergoing a filtering and purification cycle, the wastewater is affected by the previous filtering and purification process, resulting in more impurities in the wastewater after filtering and purification. At this time, the wastewater with more impurities enters the heat exchanger for heating, which can easily cause impurities to precipitate in the heat exchanger pipes, causing the heat exchanger to be blocked and affecting the heat exchange efficiency. Utility Model Content

[0004] The main purpose of the utility model is to propose a water circulation industrial control system, aiming to solve the problem that waste water with more impurities enters the heat exchanger for heating, which easily causes the impurities to precipitate in the pipes of the heat exchanger.

[0005] In order to achieve the above-mentioned purpose, the water circulation industrial control system proposed by the utility model includes:

[0006] The heat exchanger is provided with a water inlet pipe, a water outlet pipe, a heat source inlet pipe, and a heat source outlet pipe;

[0007] A water inlet flow path connected to the water inlet pipe;

[0008] A water outlet flow path connected to the water outlet pipe;

[0009] A first detection element, installed in the water inlet flow path, for detecting water quality in the water inlet flow path; and

[0010] The discharge assembly includes a discharge valve and a discharge pipe connected to each other. The discharge valve is installed in the water inlet flow path, arranged between the first detection component and the water inlet pipe, and electrically connected to the first detection component. The discharge valve is used to discharge water with unqualified water quality through the discharge pipe.

[0011] In one embodiment, the first detection member is configured as a first detection sensor, which is installed in the water inlet flow path to detect the water quality of water in the water inlet flow path and is electrically connected to the discharge valve.

[0012] In one embodiment, the first detection member is at least 3 meters away from the discharge valve.

[0013] In one embodiment, the water circulation industrial control system also includes a water replenishment flow path, which connects the water inlet pipe and the clean water source. When the discharge valve is used to discharge water with unqualified water quality through the discharge pipe, the water replenishment flow path is used to input clean water into the water inlet pipe.

[0014] In one embodiment, the water replenishment flow path includes a water replenishment pipe and a replenishment valve connected to each other, and the replenishment valve is connected to the water inlet pipe and electrically connected to the discharge valve.

[0015] In one embodiment, the replenishment valve is installed in the water inlet flow path and is located between the discharge valve and the water inlet pipe.

[0016] In one embodiment, the water circulation industrial control system further includes an alarm component, and the first detection component is electrically connected to the alarm component.

[0017] In one embodiment, the water circulation industrial control system further includes a backwashing flow path installed in the water outlet flow path for backwashing the heat exchanger.

[0018] In one embodiment, the backwash flow path includes a backwash valve and a water pipe connected to each other, and the backwash valve is installed in the water outlet flow path.

[0019] In one embodiment, the water circulation industrial control system further includes a second detection component installed in the water outlet flow path to detect the water quality of the water in the water outlet flow path.

[0020] The technical solution of the utility model adopts the cooperation of the first detection component and the discharge valve, and detects the water in the water inlet flow path through the first detection component. When it is found that the water quality currently flowing into the heat exchanger is poor, and there is a problem that more impurities are precipitated in the heat exchanger after heating, the discharge valve discharges the water with poor water quality to the outside through the discharge pipe, which can prevent water with unqualified water quality from entering the heat exchanger, and can prevent the heat exchanger from heating water with unqualified water quality, which will cause more impurities to precipitate in the heat exchanger, thereby affecting the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0022] Figure 1 This is a structural schematic diagram of an embodiment of a water circulation industrial control system provided by the utility model.

[0023] Description of Figure Numbers:

[0024] 100, heat exchanger; 110, water inlet pipe; 120, water outlet pipe; 130, heat source inlet pipe; 140, heat source outlet pipe;

[0025] 200, water inlet flow path;

[0026] 300, water outlet flow path;

[0027] 400, first test piece;

[0028] 500, discharge assembly; 510, discharge valve; 520, discharge pipe; 530, waste collection part;

[0029] 600, water supply flow path; 610, water supply pipe; 620, water supply valve;

[0030] 700, backwash flow path; 710, water delivery pipe; 720, backwash valve;

[0031] 800. Second test piece.

[0032] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0035] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0036] In many industrial processes, a large amount of waste heat is generated. If it is not used, it will cause a waste of energy. The heat exchanger can transfer this part of waste heat to the medium that needs to be heated and heat the medium. Heat exchangers are often used to heat water in industrial processes. In order to improve the utilization rate of water in industry, most industrial production processes will filter and purify the wastewater and then heat it through the heat exchanger for use.

[0037] However, when the heat exchanger heats the wastewater that is being filtered and purified, the wastewater is affected by the previous filtering and purification process, resulting in more impurities in the filtered and purified wastewater. At this time, the wastewater with more impurities enters the heat exchanger for heating, which easily causes the impurities to precipitate in the heat exchanger pipes, causing the heat exchanger to be blocked, affecting the heat exchange efficiency, and increasing the number of cleaning times for the heat exchanger, which is very inconvenient. The main reason why the wastewater with more impurities enters the heat exchanger is that the equipment in the filtering and purification process needs to be replaced but has not been replaced, resulting in a decrease in the filtering and purification effect.

[0038] The utility model proposes a water circulation industrial control system, wherein the water circulation industrial control system includes a data acquisition module, a control logic processing module, an execution module, a human-computer interaction module, etc. The data acquisition module is responsible for collecting data monitored by various sensors in the system, such as temperature, pressure, flow, water quality parameters, etc., and it also involves the process of converting analog signals into digital signals for processing by PLC or controller. The control logic processing module takes PLC or DCS (distributed control system) as the core, processes the collected data according to the preset control logic and algorithm, and issues control instructions; it also has fault diagnosis and safety protection logic. The execution module receives the instructions of the control logic processing module and controls the operation of the field equipment, such as adjusting the valve opening, starting or stopping the pump, switching the system operation mode, etc., wherein the field equipment also includes motor starters, solenoid valves, frequency converters, filters and other equipment. The human-computer interaction module provides an intuitive operation interface, enabling operators to monitor the system status, adjust the operation parameters, view alarm information and historical records, and perform manual intervention when necessary.

[0039] See also Figure 1 In one embodiment of the utility model, the water circulation industrial control system includes:

[0040] The heat exchanger 100 is provided with a water inlet pipe 110, a water outlet pipe 120, a heat source inlet pipe 130, and a heat source outlet pipe 140; wherein the heat exchanger 100 in the present application may be a shell and tube heat exchanger 100. The heat source enters the heat exchanger 100 through the heat source inlet pipe 130, and then is discharged from the heat exchanger 100 through the heat source outlet pipe 140.

[0041] The water inlet flow path 200 is connected to the water inlet pipe 110 . Specifically, the water inlet flow path 200 connects the filter and the water inlet pipe 110 . The water inlet flow path 200 is used to guide the water filtered by the filter into the water inlet pipe 110 , and then into the heat exchanger 100 .

[0042] The outlet water flow path 300 is connected to the outlet water pipe 120. The outlet water flow path 300 is used to guide the water heated by the heat exchanger 100 to the next process for use in the next process. In this embodiment, there is no specific limitation on the next process to which the outlet water flow path 300 is connected, and it can be set according to industrial production.

[0043] The first detection element 400 is installed in the water inlet flow path 200 to detect the water quality in the water inlet flow path 200, wherein the first detection element 400 detects the water quality including turbidity detection, ammonia nitrogen detection, dissolved oxygen detection, etc. In this embodiment, the structure of the first detection element 400 is not specifically limited.

[0044] The discharge assembly 500 includes a discharge valve 510 and a discharge pipe 520 connected to each other. The discharge valve 510 is installed in the water inlet flow path 200, disposed between the first detection member 400 and the water inlet pipe 110, and electrically connected to the first detection member 400. The discharge valve 510 is used to discharge water with unqualified water quality through the discharge pipe 520, wherein the electrical connection between the first detection member 400 and the discharge valve 510 is an indirect electrical connection. The first detection member 400 feeds back the detected water quality information to the above-mentioned control logic processing module, and then the control logic processing module judges the water quality information. When the water quality is poor and judged to be unqualified, the discharge valve 510 is operated by the execution module to discharge the unqualified water through the discharge pipe 520. When the water quality is qualified, the discharge valve 510 allows the water to flow into the water inlet pipe 110.

[0045] In this embodiment, the discharge pipe 520 connects the discharge valve 510 and the sewage collecting part 530, wherein the sewage collecting part 530 is used to collect water with unqualified water quality. The sewage collecting part 530 can also be arranged upstream of the filter so that the water with unqualified water quality can be filtered twice to improve its water quality.

[0046] The valve body used in the present application may adopt a multi-way reversing valve. In order to facilitate PLC control, the multi-way reversing valve may adopt a multi-way electromagnetic reversing valve.

[0047] The technical solution of the present invention adopts the cooperation of the first detection component 400 and the discharge valve 510. The first detection component 400 is used to detect the water in the water inlet flow path 200. When it is found that the water quality currently flowing into the heat exchanger 100 is poor, and there is a problem that more impurities are precipitated in the heat exchanger 100 after heating, the discharge valve 510 discharges the water with poor water quality to the outside through the discharge pipe 520, which can prevent water with unqualified water quality from entering the heat exchanger 100 and can prevent the heat exchanger 100 from heating the water with unqualified water quality, resulting in more impurities precipitated in the heat exchanger 100, thereby affecting the heat exchange efficiency.

[0048] In one embodiment, the first detection member 400 is configured as a first detection sensor, which is installed in the water inlet flow path 200 to detect the water quality of the water in the water inlet flow path 200 and is electrically connected to the discharge valve 510. In this embodiment, the first detection sensor can be configured as a multifunctional detection sensor, and multiple detections are performed on the water through the multifunctional detection sensor. Of course, the first detection sensor can also have only one detection function. When the first detection sensor has only one detection function, its first detection sensor needs to be set to multiple, and the water in the water inlet flow path 200 is detected by multiple first detection sensors to meet the use requirements.

[0049] In one embodiment, the first detection member 400 is at least 3 meters away from the discharge valve 510. Thus, when the first detection member 400 detects the water quality data in the water inlet flow path 200 and feeds it back to the control logic processing module, the control logic processing module determines that the water quality is unqualified. At this time, the control logic processing module can control the operation time of the discharge valve 510 through the execution module according to the speed of the water flow in the water inlet flow path 200, so that the discharge valve 510 can more accurately discharge the water with unqualified water quality into the sewage collecting part 530 through the discharge pipe 520. Similarly, when the control logic processing module determines that the water quality is qualified, the discharge valve 510 can be controlled at this time to allow the water with qualified water quality to enter the heat exchanger 100 through the water inlet pipe 110.

[0050] In one embodiment, in order to avoid the situation that no water enters the heat exchanger 100 after the discharge valve 510 discharges water with unqualified water quality through the discharge pipe 520, resulting in dry burning of the pipes in the heat exchanger 100, a water replenishment flow path 600 can be set in the water circulation industrial control system. The water replenishment flow path 600 connects the water inlet pipe 110 and a clean water source. When the discharge valve 510 is used to discharge water with unqualified water quality through the discharge pipe 520, the water replenishment flow path 600 is used to input clean water into the water inlet pipe 110. In this way, by allowing clean water to enter the heat exchanger 100 through the water inlet pipe 110, dry burning of the pipes inside the heat exchanger 100 can be avoided.

[0051] In one embodiment, the water replenishment flow path 600 includes a connected water replenishment pipe 610 and a replenishment valve 620, wherein the replenishment valve 620 is connected to the water inlet pipe 110 and electrically connected to the discharge valve 510. In this embodiment, when the discharge valve 510 discharges water with unqualified water quality to the outside through the discharge pipe 520, the replenishment valve 620 replenishes clean water into the water inlet pipe 110. On the contrary, when the discharge valve 510 flows water with qualified water quality into the water inlet pipe 110, the replenishment valve 620 does not replenish clean water into the water inlet pipe 110 to ensure that industrial water can be recycled normally. At the same time, in this embodiment, by using the replenishment valve 620 and the water replenishment pipe 610, the purchase cost of the valve body of the present application can be reduced when in use, and the difficulty of maintenance can be reduced when repairing.

[0052] In one embodiment, the replenishing valve 620 is installed in the water inlet flow path 200 and is located between the discharge valve 510 and the water inlet pipe 110 , so as to facilitate the replenishment of purified water into the heat exchanger 100 through the water inlet pipe 110 .

[0053] In other embodiments, according to the multi-way reversing valve, the clean water source can also be directly connected to the sewage valve.

[0054] In one embodiment, the water circulation industrial control system also includes an alarm component (not shown), and the first detection component 400 is electrically connected to the alarm component. In this embodiment, the alarm component can be configured as an alarm light. When the control logic processing module determines that the detected water quality is poor for a certain period of time, the alarm light can be used to alert the equipment maintenance personnel to maintain the equipment, mainly to inspect and repair the filter.

[0055] In one embodiment, in order to facilitate the cleaning of the heat exchanger 100, the water circulation industrial control system further includes a backwashing flow path 700, which is installed on the outlet flow path 300 to backwash the heat exchanger 100. The heat exchanger 100 is cleaned through the backwashing flow path 700, and the sewage generated during the cleaning process can be discharged from the discharge pipe 520 to the sewage collecting part 530 through the discharge valve 510. At the same time, when the sewage collecting part 530 is connected to the upstream of the filter, the water used for backwashing in this embodiment can be recycled.

[0056] In one embodiment, the backwash flow path 700 includes a backwash valve 720 and a water pipe 710 connected to each other. The backwash valve 720 is installed on the water outlet flow path 300. In this embodiment, the backwash valve 720 is electrically connected to the discharge valve 510. This is to facilitate the water in the backwash process to enter the sewage collecting part 530, thereby further improving the water circulation effect of the present application.

[0057] In one embodiment, the water circulation industrial control system further includes a second detection component 800, which is installed in the water outlet flow path 300 to detect the water quality of the water in the water outlet flow path 300. In this embodiment, the second detection component 800 detects the water quality of the water in the water outlet flow path 300, mainly detecting the water temperature. When the control logic processing module finds that the water temperature is low for a certain period of time, the alarm component prompts the equipment maintenance personnel to inspect and repair the heat exchanger 100. In this embodiment, an alarm component (not shown) can also be set, and the alarm component is configured as an alarm light, and the alarm light in this embodiment is not the same as the alarm light in the above embodiment. When the two embodiments are combined, the present application can have two alarm lights when in use, or there is an alarm light with two alarm colors to distinguish different alarm signals.

[0058] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A water circulation industrial control system, characterized in that: include: The heat exchanger is provided with a water inlet pipe, a water outlet pipe, a heat source inlet pipe, and a heat source outlet pipe; A water inlet flow path connected to the water inlet pipe; A water outlet flow path connected to the water outlet pipe; A first detection element, installed in the water inlet flow path, for detecting water quality in the water inlet flow path; as well as The discharge assembly includes a discharge valve and a discharge pipe connected to each other. The discharge valve is installed in the water inlet flow path, arranged between the first detection component and the water inlet pipe, and electrically connected to the first detection component. The discharge valve is used to discharge water with unqualified water quality through the discharge pipe.

2. The water circulation industrial control system according to claim 1, characterized in that: The first detection member is configured as a first detection sensor, which is installed in the water inlet flow path to detect the water quality of water in the water inlet flow path and is electrically connected to the discharge valve.

3. The water cycle industrial control system according to claim 2, characterized in that: The first detection member is at least 3 m away from the discharge valve.

4. The water circulation industrial control system according to claim 1, characterized in that: The water circulation industrial control system also includes a water replenishment flow path, which connects the water inlet pipe and the clean water source. When the discharge valve is used to discharge water with unqualified water quality through the discharge pipe, the water replenishment flow path is used to input clean water into the water inlet pipe.

5. The water cycle industrial control system according to claim 4, characterized in that: The water replenishment flow path includes a water replenishment pipe and a replenishment valve connected to each other. The replenishment valve is connected to the water inlet pipe and electrically connected to the discharge valve.

6. The water cycle industrial control system according to claim 5, characterized in that: The replenishing valve is installed in the water inlet flow path and is located between the discharge valve and the water inlet pipe.

7. The water circulation industrial control system according to any one of claims 1 to 6, characterized in that: The water circulation industrial control system further comprises an alarm component, and the first detection component is electrically connected to the alarm component.

8. The water circulation industrial control system according to any one of claims 1 to 6, characterized in that: The water circulation industrial control system also includes a backwashing flow path installed in the water outlet flow path for backwashing the heat exchanger.

9. The water cycle industrial control system according to claim 8, characterized in that: The backwash flow path includes a backwash valve and a water pipe connected to each other, and the backwash valve is installed on the water outlet flow path.

10. The water cycle industrial control system according to claim 8, characterized in that: The water circulation industrial control system also includes a second detection component, which is installed in the water outlet flow path and is used to detect the water quality of the water in the water outlet flow path.

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