A high-salt wastewater heat recovery device

Abstract

The present invention discloses a high-salt wastewater heat energy recovery device, comprising a heat pump, a first pipe, a second pipe, a third pipe, and a fourth pipe. The first pipe is used to introduce salt-calcium secondary condensate water, the heat pump is used to cool the salt-calcium secondary condensate water introduced by the first pipe, and transport the cooled salt-calcium secondary condensate water through the second pipe, while absorbing and storing the heat of the salt-calcium secondary condensate water. The third pipe is used to introduce desalted water after high-temperature resin water production in the power workshop. The heat pump absorbs the stored heat to heat the desalted water introduced by the third pipe, and the heated desalted water is transported through the fourth pipe to the power low-temperature deaerator for operation. The present invention effectively recovers the heat energy in the salt-calcium secondary condensate water and uses it to heat the desalted water after high-temperature resin water production in the power workshop. This design not only improves the utilization efficiency of heat energy, but also helps to reduce energy consumption, thereby achieving the goal of energy conservation and emission reduction.

Description

Technical Field

[0001] The present invention relates to the technical field of heat recovery, in particular to a high-salt wastewater heat recovery device. Background Art

[0002] With the development of industry, the amount of high-salinity wastewater generated is increasing, and its treatment and resource utilization have become important issues. In traditional wastewater treatment processes, a large amount of heat energy is often overlooked and wasted. To effectively utilize this heat energy and reduce thermal pollution to the environment, it is particularly important to develop a device that can recover heat energy from high-salinity wastewater. Although some heat recovery devices are currently available on the market, they are often complex, inefficient, and insufficiently adaptable to the specific treatment requirements of high-salinity wastewater. Moreover, during the wastewater treatment process, traditional piping systems often lack adequate protection and are susceptible to accidental collisions, either by humans or equipment, resulting in damage. This damage not only affects the normal operation of wastewater treatment but can also cause environmental problems such as leaks and even threaten the safety of workers. Therefore, for piping systems used in high-salinity wastewater treatment, there is an urgent need for effective protective devices to protect the pipes from collisions and damage to ensure efficient and safe operation of wastewater treatment. Furthermore, considering the thermal energy resources contained in high-salinity wastewater, developing a device that can simultaneously achieve heat recovery and pipeline protection is of great significance for improving energy efficiency and ensuring the stable operation of wastewater treatment systems. Summary of the Invention

[0003] The purpose of the present invention is to solve the above technical problems, thereby providing a high-salt wastewater heat energy recovery device;

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0005] The present invention provides a high-salt wastewater heat energy recovery device.

[0006] It includes a heat pump, a first pipeline, a second pipeline, a third pipeline, and a fourth pipeline. The first pipeline, the second pipeline, the third pipeline, and the fourth pipeline are all connected to the heat pump. The first pipeline is used to pass salt-calcium secondary condensate water. The heat pump is used to cool the salt-calcium secondary condensate water passed through the first pipeline and transport the cooled salt-calcium secondary condensate water through the second pipeline, while absorbing and storing the heat of the salt-calcium secondary condensate water. The third pipeline is used to pass desalted water after high-temperature resin water production in the power workshop. The heat pump absorbs the stored heat to heat the desalted water passed through the third pipeline. The heated desalted water is transported through the fourth pipeline to the power low-temperature deaerator for operation;

[0007] The second pipeline is connected with a first liquid outlet pipe and a second liquid outlet pipe. A first solenoid valve is provided on the first liquid outlet pipe, and a second solenoid valve is provided on the second liquid outlet pipe. A first temperature detector is provided in the second pipeline. The first temperature detector is electrically connected to the first solenoid valve and the second solenoid valve. The first temperature detector is used to detect the temperature of the salt-calcium secondary condensate water entering the second pipeline. When the temperature meets the standard, the first solenoid valve opens, and the solution in the second pipeline is discharged through the first liquid outlet pipe. When the temperature does not meet the standard, the second solenoid valve opens, and the solution in the second pipeline is discharged through the second liquid outlet pipe.

[0008] Optionally, the second liquid outlet pipe is connected to a cooling mechanism, which includes a first storage box and a second storage box. The first storage box is provided with a cavity, and the second storage box is arranged in the cavity via a bracket. The second liquid outlet pipe passes through a side wall of the first storage box and is connected to the inner cavity of the second storage box. The second storage box is used to store the solution transported by the second liquid outlet pipe. The second storage box is connected to a first liquid discharge pipe. The output end of the first liquid discharge pipe passes through the side wall of the first storage box and extends to the outside of the first storage box. The first liquid discharge pipe is used to transport the solution in the second storage box.

[0009] A cooling channel is formed between the outer surface of the second storage box and the cavity, and the cooling channel is filled with condensate, and the condensate is used to cool the solution in the second storage box. A liquid inlet pipe is provided on one side of the cooling channel, and the condensate is introduced into the cooling channel through the liquid inlet pipe. A second liquid discharge pipe is provided at the upper end of the first storage box, and the second liquid discharge pipe is connected to the cooling channel. The second liquid discharge pipe is used to discharge the condensate in the cooling channel, thereby realizing the circulation of the condensate in the cooling channel. The second liquid discharge pipe is connected to a condenser, and the condenser is used to cool the solution transported from the cooling channel. The liquid inlet pipe is connected to the condenser, and the solution cooled by the condenser is transported back to the cooling channel through the liquid inlet pipe.

[0010] Optionally, an opening and closing mechanism is provided at the upper end of the second storage box, and the opening and closing mechanism includes a baffle, a first guide rail, a second guide rail, a sliding block, and an electric push rod. The lower end of the baffle is fixedly set on the upper surface of the second storage box, and the upper end of the baffle is fixedly set on the upper side wall of the first storage box. The first guide rail is set on the upper inner side wall of the first storage box, and the second guide rail is set on the upper surface of the second storage box. The sliding block is slidingly set between the first guide rail and the second guide rail. The electric push rod is set on the baffle, and the output shaft of the electric push rod is connected to the side wall of the sliding block. The electric push rod is used to drive the sliding block to slide left and right between the first guide rail and the second guide rail. A through hole is opened on the first guide rail, and the through hole passes through the upper side wall of the first storage box. , and is connected to the drain pipe, a second temperature detector is provided in the cooling channel, the second temperature detector is used to detect the temperature of the condensate in the cooling channel in real time, the second temperature detector is electrically connected to the electric push rod, when the second temperature detector detects that the temperature of the condensate in the cooling channel rises, the electric push rod is opened and drives the sliding block to the left, thereby opening the through hole, and the condensate in the cooling channel is transported to the condenser through the second drain pipe for cooling, and then transported back to the cooling channel after cooling, so as to ensure that the condensate in the cooling channel is kept at a constant temperature, and then ensure that the solution in the second storage tank is kept at a constant temperature, when the second temperature detector detects that the condensate in the cooling channel reaches the set temperature, the electric push rod is reset and drives the sliding block to reset, thereby closing the through hole.

[0011] Optionally, both the first and second pipes are provided with protective devices, the protective devices comprising a protective mechanism, an upper protective plate, a lower protective plate, an upper protective column, and a lower protective column, the upper protective column being provided on the lower surface of the upper protective plate, the lower protective column being provided on the lower protective plate, the protective mechanism being provided between the upper protective plate and the lower protective plate, the upper protective column and the lower protective column being provided correspondingly, a first arc-shaped groove being provided at the lower end of the upper protective column, a second arc-shaped groove being provided above the lower protective column, a circular groove being formed between the first arc-shaped groove and the second arc-shaped groove, and the circular groove being used for inserting the first pipe;

[0012] The protective mechanism includes an upper fixed plate, a lower fixed plate, a spring, a protective rod, a protective block, and a limit block, the upper fixed plate is arranged on the lower surface of the upper protective plate, the lower fixed plate is arranged on the upper surface of the lower protective plate, the limit block is arranged in two groups, a gap is formed between the two groups of limit blocks, the lower end of the protective block is arranged on the lower fixed plate through the gap, the protective rod is arranged in two groups, the two groups of protective rods are respectively arranged on the left and right sides of the protective block, the upper end of the protective rod is connected to the upper fixed plate, the lower end of the protective rod is connected to the side wall of the protective block, the lower end of the spring is connected to the protective block, the upper end of the spring is connected to the upper fixed plate, the two groups of limit blocks are both penetrated by a first mounting hole, the lower end of the protective block is penetrated by a second mounting hole, the first mounting hole and the second mounting hole are arranged correspondingly, and a rotating shaft is arranged in the first mounting hole and the second mounting hole.

[0013] Optionally, the lower end of the protective block is provided with an arcuate surface, and the arcuate surface can rotate along the surface of the lower fixing plate.

[0014] Optionally, the protective mechanism is provided in at least two groups, and the two groups of protective mechanisms are respectively provided on the left and right sides of the upper protective column, and the surfaces of the first arc-shaped groove and the second arc-shaped groove are both provided with a protective layer.

[0015] Optionally, a flow regulating valve is provided at the output end of the fourth pipeline, and the flow regulating valve is used to adjust the flow of the heated desalted water as needed to meet the actual needs of the powered low-temperature deaerator.

[0016] Beneficial effects of the present invention

[0017] The present invention effectively recovers the heat energy in the secondary condensate of salt and calcium, and uses it to heat the desalted water after the high-temperature resin water production in the power workshop. This design not only improves the utilization efficiency of heat energy, but also helps to reduce energy consumption, thereby achieving the goal of energy conservation and emission reduction;

[0018] The design of the protective device of the present invention provides additional protection for the pipeline, preventing damage to the pipeline caused by external factors. The design of the protective mechanism and the arc groove not only enhances the stability of the pipeline, but also provides a buffer when the pipeline is subjected to external forces, reducing the risk of pipeline rupture or damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention.

[0020] Figure 2 This is a schematic diagram of the internal structure of the first storage box of the present invention.

[0021] Figure 3 This is an enlarged view of the opening and closing mechanism structure of the present invention.

[0022] Figure 4 This is a top view of the first guide rail structure of the present invention.

[0023] Figure 5 This is a cross-sectional view of the second pipeline structure of the present invention.

[0024] Figure 6 It is a three-dimensional diagram of the protective device structure of the present invention.

[0025] Figure 7 It is a side view of the protective device structure of the present invention.

[0026] Explanation of the reference numerals: 1-heat pump, 2-first pipeline, 3-second pipeline, 4-third pipeline, 5-fourth pipeline, 6-first liquid outlet pipe, 7-second liquid outlet pipe, 8-first solenoid valve, 9-second solenoid valve, 10-first temperature detector, 11-first storage box, 12-second storage box, 13-bracket, 14-first liquid discharge pipe, 15-cooling channel, 16-liquid inlet pipe, 17-second liquid discharge pipe, 18-baffle, 19-first Guide rail, 20-second guide rail, 21-sliding block, 22-electric push rod, 23-through hole, 24-second temperature detector, 25-upper protective plate, 26-lower protective plate, 27-upper protective column, 28-lower protective column, 29-first arc groove, 30-second arc groove, 31-upper fixed plate, 32-lower fixed plate, 33-spring, 34-protective rod, 35-protective block, 36-limiting block, 37-first mounting hole, 38-arc surface. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0028] Example

[0029] like Figure 1-Figure 7 As shown, the present invention provides a high-salt wastewater heat energy recovery device,

[0030] It includes a heat pump 1, a first pipeline 2, a second pipeline 3, a third pipeline 4, and a fourth pipeline 5. The first pipeline 2, the second pipeline 3, the third pipeline 4, and the fourth pipeline 5 are all connected to the heat pump 1. The first pipeline 2 is used to pass salt-calcium secondary condensate water. The heat pump 1 is used to cool the salt-calcium secondary condensate water passed through the first pipeline 2, and transport the cooled salt-calcium secondary condensate water through the second pipeline 3, while absorbing and storing the heat of the salt-calcium secondary condensate water. The third pipeline 4 is used to pass desalted water after high-temperature resin water production in the power workshop. The heat pump 1 absorbs the stored heat to heat the desalted water passed through the third pipeline 4. The heated desalted water is transported through the fourth pipeline 5 to the power low-temperature deaerator for operation;

[0031] The second pipeline 3 is connected to a first liquid outlet pipe 6 and a second liquid outlet pipe 7. A first solenoid valve 8 is provided on the first liquid outlet pipe 6, and a second solenoid valve 9 is provided on the second liquid outlet pipe 7. A first temperature detector 10 is provided in the second pipeline 3. The first temperature detector 10 is electrically connected to the first solenoid valve 8 and the second solenoid valve 9. The first temperature detector 10 is used to detect the temperature of the salt-calcium secondary condensate water entering the second pipeline 3. When the temperature meets the standard, the first solenoid valve 8 opens, and the solution in the second pipeline 3 is discharged through the first liquid outlet pipe 6. When the temperature does not meet the standard, the second solenoid valve 9 opens, and the solution in the second pipeline 3 is discharged through the second liquid outlet pipe 7.

[0032] The above design realizes the heat recovery and utilization of the salt-calcium secondary condensate water through the heat pump 1 technology. When working, the heat pump 1 can effectively reduce the temperature of the salt-calcium secondary condensate water, while capturing and storing the heat contained in these condensate waters. This stored heat is then used to heat the desalted water in the power plant, thereby realizing the recycling of energy. The temperature detection and control system in the device can monitor the temperature of the salt-calcium secondary condensate water in real time, and intelligently control the discharge path of the solution according to whether the temperature meets the standard. This intelligent temperature management method not only ensures the high efficiency of heat recovery, but also ensures the stability and safety of the entire wastewater treatment system.

[0033] Specifically, it also includes a control system, which adopts a PLC system. The PLC system is electrically connected to the first temperature detector 10 and the first solenoid valve 8 and the second solenoid valve 9 respectively. The first temperature detector 10 continuously detects the temperature of the solution in the second pipe 3. The detected temperature signal is converted into an electrical signal and transmitted to the control system. The control system compares the received temperature signal with the preset temperature standard. If the temperature meets the standard, the control system issues an instruction to open the first solenoid valve 8. If the temperature does not meet the standard and is higher than the set value, the control system issues an instruction to open the second solenoid valve 9. When the opening instruction is received, the corresponding solenoid valve will be energized and opened to allow the solution to pass through.

[0034] For example, if the temperature meets the standard, the first solenoid valve 8 opens, and the solution in the second pipe 3 is discharged through the first liquid outlet pipe 6. If the temperature does not meet the standard, the second solenoid valve 9 opens, and the solution is discharged through the second liquid outlet pipe 7.

[0035] Assuming that the preset temperature standard is 30°C, and the deammonification project requires the inlet water temperature to be lower than 30°C, when the temperature sensor detects that the solution temperature in the second pipe 3 is lower than 30°C: the temperature sensor converts this temperature signal into an electrical signal and transmits it to the control system. The control system determines that the temperature meets the standard, so it issues an instruction to open the first solenoid valve 8. After receiving the instruction, the first solenoid valve 8 opens, allowing the solution to be discharged through the first liquid outlet pipe 6.

[0036] On the contrary, if the detected temperature exceeds 30°C, the control system will determine that the temperature does not meet the standard and instruct to open the second solenoid valve 9 to allow the solution to be discharged through the second liquid outlet pipe 7. In this way, through the cooperation of the temperature detection device and the solenoid valve, the system can intelligently control the flow direction of the solution according to the temperature conditions.

[0037] The second liquid outlet pipe 7 is connected to a cooling mechanism, which includes a first storage box 11 and a second storage box 12. The first storage box 11 is provided with a cavity, and the second storage box 12 is disposed in the cavity via a bracket 13. The second liquid outlet pipe 7 passes through the side wall of the first storage box 11 and is connected to the inner cavity of the second storage box 12. The second storage box 12 is used to store the solution transported by the second liquid outlet pipe 7. The second storage box 12 is connected to a first liquid discharge pipe 14. The output end of the first liquid discharge pipe 14 passes through the side wall of the first storage box 11 and extends to the outside of the first storage box 11. The first liquid discharge pipe 14 is used to transport the solution in the second storage box 12.

[0038] A cooling channel 15 is formed between the outer surface of the second storage box 12 and the cavity. The cooling channel 15 is filled with condensate, and the condensate is used to cool the solution in the second storage box 12. A liquid inlet pipe 16 is provided on one side of the cooling channel 15, and the condensate is introduced into the cooling channel 15 through the liquid inlet pipe 16. A second liquid discharge pipe 17 is provided at the upper end of the first storage box 11. The second liquid discharge pipe 17 is connected to the cooling channel 15. The second liquid discharge pipe 17 is used to discharge the condensate in the cooling channel 15, thereby realizing the circulation of the condensate in the cooling channel 15. The second liquid discharge pipe 17 is connected to a condenser, and the condenser is used to cool the solution transported from the cooling channel 15. The liquid inlet pipe 16 is connected to the condenser, and the solution cooled and cooled by the condenser is transported back to the cooling channel 15 through the liquid inlet pipe 16.

[0039] The condensate in the cooling mechanism effectively cools the solution in the second storage tank 12, ensuring that the discharged solution temperature remains within an appropriate range. This design not only prevents high-temperature solutions from potentially disrupting subsequent processing steps, but also improves the efficiency and stability of the entire wastewater treatment system. The condensate's circulating flow and the use of a condenser make the cooling process more efficient and environmentally friendly, ensuring the continuous and stable operation of the wastewater treatment system.

[0040] When high-temperature wastewater enters the second storage tank 12, its excessive temperature can adversely affect subsequent treatment equipment and processes if not effectively cooled. The use of condensate cleverly mitigates this risk. Through a specialized piping and pumping system, the condensate is introduced into the storage tank, exchanging heat with the high-temperature wastewater, rapidly removing excess heat from the wastewater.

[0041] It is worth mentioning that the condensate is not discarded after one-time use, but is re-cooled through the condenser and then recycled again. This circulating flow design not only improves resource utilization, but also greatly reduces the generation of wastewater, which is in line with the current concept of green environmental protection, energy conservation and emission reduction.

[0042] Furthermore, by precisely controlling the flow and temperature of the condensate, the temperature of the discharged solution can be kept stable within a predetermined range that is most friendly to subsequent treatment processes. This precise temperature control greatly improves the overall efficiency and stability of the wastewater treatment system.

[0043] In actual operation, the cooling mechanism works closely with other parts of the wastewater treatment system to form an efficient and harmonious working whole. The continuous circulation of the condensate and the continuous operation of the condenser ensure the efficiency and sustainability of the cooling process, providing solid support for the continuous and stable operation of the wastewater treatment system.

[0044] An opening and closing mechanism is provided at the upper end of the second storage box 12, and the opening and closing mechanism includes a baffle 18, a first guide rail 19, a second guide rail 20, a sliding block 21, and an electric push rod 22. The lower end of the baffle 18 is fixedly provided on the upper surface of the second storage box 12, and the upper end of the baffle 18 is fixedly provided on the upper end side wall of the first storage box 11. The first guide rail 19 is provided on the upper inner side wall of the first storage box 11, and the second guide rail 20 is provided on the upper surface of the second storage box 12. The sliding block 21 is slidingly provided between the first guide rail 19 and the second guide rail 20. The electric push rod 22 is provided on the baffle 18, and the output shaft of the electric push rod 22 is connected to the side wall of the sliding block 21. The electric push rod 22 is used to drive the sliding block 21 to slide left and right between the first guide rail 19 and the second guide rail 20. A through hole 23 is provided on the first guide rail 19, and the through hole 23 passes through the first storage box 11 The upper end side wall of the cooling channel 15 is connected to the second liquid discharge pipe 17. A second temperature detector 24 is provided in the cooling channel 15. The second temperature detector 24 is used to detect the temperature of the condensate in the cooling channel 15 in real time. The second temperature detector 24 is electrically connected to the electric push rod 22. When the second temperature detector 24 detects that the temperature of the condensate in the cooling channel 15 rises, the electric push rod 22 is opened and drives the sliding block 21 to move left, thereby opening the through hole 23. The condensate in the cooling channel 15 is transported to the condenser through the second liquid discharge pipe 17 for cooling. After cooling, it is transported back to the cooling channel 15 to ensure that the condensate in the cooling channel 15 is kept at a constant temperature, thereby ensuring that the solution in the second storage tank 12 is kept at a constant temperature. When the second temperature detector 24 detects that the condensate in the cooling channel 15 reaches the set temperature, the electric push rod 22 is reset and drives the sliding block 21 to reset, thereby closing the through hole 23.

[0045] In the wastewater treatment process, the temperature control of the condensate is crucial because it directly affects the cooling effect and the stable operation of the system. The opening and closing mechanism monitors the temperature of the condensate in real time through its built-in second temperature detector 24. Once the temperature rises above the preset threshold, the mechanism will respond quickly and accurately. Specifically, when the second temperature detector 24 detects that the condensate temperature rises, the opening and closing mechanism will start immediately and open the through hole 23 through the electric push rod 22. This action allows the high-temperature condensate to flow into the condenser, and effective heat exchange is carried out in the condenser, thereby reducing the temperature.

[0046] The condenser is designed with an efficient cooling system to ensure that the condensate can be cooled quickly and effectively. Once the temperature of the condensate in the cooling channel 15 drops to within the set safety range, the opening and closing mechanism will automatically operate again to close the through hole 23, thereby preventing more condensate from entering the condenser. This process is dynamic and can be adjusted according to real-time temperature changes to keep the temperature in the cooling channel 15 within a stable range.

[0047] This intelligent temperature regulation mechanism not only significantly improves the automation level of the wastewater treatment system and reduces the need for human intervention, but also effectively ensures the continuity and stability of the cooling effect. The automation and intelligence of the system means fewer human errors, higher operational efficiency and more stable system performance.

[0048] Furthermore, the intelligent nature of the opening and closing mechanism is reflected in its ability to adapt to different operating conditions and external environments. For example, in extreme weather or high-load conditions, the mechanism can adjust the opening and closing state of the through hole 23 more frequently to ensure that the system temperature does not overheat.

[0049] In general, the opening and closing mechanism provides key technical support for the efficient and stable operation of the wastewater treatment system through its intelligent temperature regulation function. The design of this mechanism not only improves the automation level of wastewater treatment, but also makes important contributions to technological progress in the field of environmental protection engineering.

[0050] The first pipe 2 and the second pipe 3 are both provided with a protective device, which includes a protective mechanism, an upper protective plate 25, a lower protective plate 26, an upper protective column 27, and a lower protective column 28. The upper protective column 27 is provided on the lower surface of the upper protective plate 25, and the lower protective column 28 is provided on the lower protective plate 26. The protective mechanism is provided between the upper protective plate 25 and the lower protective plate 26. The upper protective column 27 and the lower protective column 28 are provided correspondingly. A first arc-shaped groove 29 is provided at the lower end of the upper protective column 27, and a second arc-shaped groove 30 is provided above the lower protective column 28. A circular groove is formed between the first arc-shaped groove 29 and the second arc-shaped groove 30, and the circular groove is used to insert the first pipe 2;

[0051] The protective mechanism includes an upper fixed plate 31, a lower fixed plate 32, a spring 33, a protective rod 34, a protective block 35, and a limit block 36. The upper fixed plate 31 is arranged on the lower surface of the upper protective plate 25, and the lower fixed plate 32 is arranged on the upper surface of the lower protective plate 26. The limit blocks 36 are provided in two groups, and a gap is formed between the two groups of limit blocks 36. The lower end of the protective block 35 is provided on the lower fixed plate 32 through the gap. The protective rod 34 is provided in two groups, and the two groups of protective rods 34 are respectively provided on the left and right sides of the protective block 35. The upper ends of the protective rods 34 are aligned with the upper The fixing plate 31 is connected, the lower end of the protective rod 34 is connected to the side wall of the protective block 35, the lower end of the spring 33 is connected to the protective block 35, and the upper end of the spring 33 is connected to the upper fixed plate 31. The two groups of limit blocks 36 are penetrated by a first mounting hole 37, and the lower end of the protective block 35 is penetrated by a second mounting hole. The first mounting hole 37 and the second mounting hole are correspondingly arranged, and a rotating shaft is provided in the first mounting hole 37 and the second mounting hole. The lower end of the protective block 35 is provided with an arc surface 38, and the arc surface 38 can rotate along the surface of the lower fixed plate 32.

[0052] By adding protective devices to the first pipe 2 and the second pipe 3, this invention significantly improves the safety and durability of the pipeline system. The protective device adopts a combination design of upper and lower protective plates 26 and a protective mechanism, which can effectively resist external human or equipment collisions. This protection mechanism not only extends the service life of the pipeline and reduces the risk of damage and leakage caused by collisions, but also provides a more stable support for the entire wastewater treatment system. This design is of great significance for ensuring the continuity and safety of the wastewater treatment process.

[0053] It should be noted that, in the present application, the first pipe 2 and the second pipe 3 are both polyethylene pipes. Specifically, when the upper protective plate 25 is subjected to downward pressure, the pressure is first transmitted to the protective block 35. Since a protective rod 34 is connected between the upper fixed plate 31 and the protective block 35, the pressure is transmitted from the protective block 35 to the protective rod 34. When the pressure is too great and the protective rod 34 breaks as a whole, the pressure on the protective block 35 is transmitted to the spring 33. The spring 33 has a buffering effect on the pressure, thereby slowing down the impact of external pressure on the first pipe 2 and the second pipe 3. Therefore, It is understood that in the present application, first, the first pipe 2 is placed between the circular grooves of the upper protective column 27 and the lower protective column 28. The circular groove plays a role in positioning the pipe, and due to the setting of the protective rod 34, the pipe is in a suspended state between the circular grooves. At this time, the first arc groove 29 does not generate pressure on the pipe surface. The first arc groove 29 and the second arc groove 30 only play a role in limiting the position of the pipe. Therefore, it can be understood that before the protective rod 34 breaks, the pressure on the upper protective plate 25 cannot be transmitted to the surface of the pipe from beginning to end. Therefore, during this period of time, the pipe is in In the non-destructive stage, only when the protective rod 34 breaks will the pressure be transmitted to the surface of the pipe. At this time, the spring 33 has a buffering effect on the pressure, thus buffering the pipe. In addition, the lower end of the protective block 35 is configured as an arc structure, which will deflect when subjected to pressure, thereby transferring the pressure. The arc surface 38 design allows the protective block 35 to deflect and rotate more smoothly when subjected to external force. This design reduces direct hard collision between the protective block 35 and the external force, thereby reducing the risk of local excessive force. When the external force acts on the arc surface 38, the protective block 35 will deflect and rotate. During this process, the pressure originally concentrated at one point will be dispersed over a larger area as the protective block 35 rotates. This transfer not only reduces the intensity of local pressure, but also enables the overall structure to better adapt to changes in external pressure. Through the arc surface 38 design and offset rotation function of the protective block 35, the pressure that may have been concentrated in a certain part of the pipe is effectively dispersed, which reduces the risk of damage to the pipe due to local excessive pressure. The pressure transfer effect means that the various parts of the pipe are subjected to more uniform force, reducing stress concentration, thereby extending the service life of the pipe.

[0054] The protective mechanism is provided in at least two groups, and the two groups of protective mechanisms are respectively provided on the left and right sides of the upper protective column 27 . The surfaces of the first arc-shaped groove 29 and the second arc-shaped groove 30 are both provided with a protective layer.

[0055] By integrating a temperature sensor and an opening and closing mechanism, the present invention enables the system to accurately monitor the temperature changes of the condensate in the cooling channel 15 in real time. This precise monitoring capability ensures the system's rapid response to temperature fluctuations, thereby maintaining the temperature stability of key links in the wastewater treatment process. When the temperature rises abnormally, the opening and closing mechanism can quickly open the through hole 23 to guide the high-temperature condensate into the condenser for cooling. This immediate reaction mechanism effectively prevents the adverse effects of temperature increases on the wastewater treatment effect.

[0056] Through precise temperature control, the system of the present invention can utilize energy more efficiently, reduce energy consumption and waste, and meet the current society's urgent demand for energy conservation, emission reduction and green environmental protection. In addition, through the recycling of condensate, the system also reduces water resource consumption in the wastewater treatment process, further embodying the concept of environmental protection.

[0057] The present invention effectively recovers the heat energy in the secondary condensate of salt and calcium, and uses it to heat the desalted water after the high-temperature resin water production in the power workshop. This design not only improves the utilization efficiency of thermal energy, but also helps to reduce energy consumption, thereby achieving the goal of energy conservation and emission reduction.

[0058] The present invention is provided with a first temperature detector 10 and a solenoid valve, which can perform intelligent control according to the temperature of the salt-calcium secondary condensate water. When the temperature meets the standard, the solution is discharged through the first liquid outlet pipe 6; when the temperature does not meet the standard, it is discharged through the second liquid outlet pipe 7. This design ensures the temperature quality of the output solution and improves the flexibility and reliability of the process.

[0059] The present invention realizes rapid cooling of high-temperature solution through the design of the cooling mechanism and the condenser. The condensate circulates in the cooling channel 15 and is cooled by the condenser, thereby ensuring high efficiency and stability of the cooling effect.

[0060] The design of the protective device of the present invention provides additional protection for the pipeline, preventing damage to the pipeline caused by external factors. The design of the protective mechanism and the arc groove not only enhances the stability of the pipeline, but also provides a buffer when the pipeline is subjected to external forces, reducing the risk of pipeline rupture or damage.

[0061] The present invention realizes automatic temperature detection and automatic process control through the electrical connection of the temperature detector and the solenoid valve. This intelligent management method not only improves production efficiency, but also reduces the need for manual intervention, lowers operation difficulty and labor costs.

[0062] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-salt wastewater heat recovery device, characterized in that: It includes a heat pump, a first pipeline, a second pipeline, a third pipeline, and a fourth pipeline. The first pipeline, the second pipeline, the third pipeline, and the fourth pipeline are all connected to the heat pump. The first pipeline is used to pass salt-calcium secondary condensate water. The heat pump is used to cool the salt-calcium secondary condensate water passed through the first pipeline and transport the cooled salt-calcium secondary condensate water through the second pipeline, while absorbing and storing the heat of the salt-calcium secondary condensate water. The third pipeline is used to pass desalted water after high-temperature resin water production in the power workshop. The heat pump absorbs the stored heat to heat the desalted water passed through the third pipeline. The heated desalted water is transported through the fourth pipeline to the power low-temperature deaerator for operation; The second pipeline is connected to a first liquid outlet pipe and a second liquid outlet pipe, a first solenoid valve is provided on the first liquid outlet pipe, a second solenoid valve is provided on the second liquid outlet pipe, and a first temperature detector is provided in the second pipeline. The first temperature detector is electrically connected to the first solenoid valve and the second solenoid valve. The first temperature detector is used to detect the temperature of the salt-calcium secondary condensate water entering the second pipeline. When the temperature meets the standard, the first solenoid valve opens, and the solution in the second pipeline is discharged through the first liquid outlet pipe. When the temperature does not meet the standard, the second solenoid valve opens, and the solution in the second pipeline is discharged through the second liquid outlet pipe. The first pipeline and the second pipeline are both provided with a protective device, which includes a protective mechanism, an upper protective plate, a lower protective plate, an upper protective column, and a lower protective column; The protective mechanism comprises an upper fixing plate, a lower fixing plate, a spring, a protective rod, a protective block, and a limit block, the upper fixing plate is arranged on the lower surface of the upper protective plate, the lower fixing plate is arranged on the upper surface of the lower protective plate, the limit block is provided with two groups, a gap is formed between the two groups of limit blocks, the lower end of the protective block is arranged on the lower fixing plate through the gap, the protective rod is provided with two groups, the two groups of protective rods are respectively arranged on the left and right sides of the protective block, the upper end of the protective rod is connected to the upper fixing plate, the lower end of the protective rod is connected to the side wall of the protective block, the lower end of the spring is connected to the protective block, the upper end of the spring is connected to the upper fixing plate, the two groups of limit blocks are penetrated by a first mounting hole, the lower end of the protective block is penetrated by a second mounting hole, the first mounting hole and the second mounting hole are arranged correspondingly, and a rotating shaft is provided in the first mounting hole and the second mounting hole; The pressure is transmitted from the protection block to the protection rod. When the pressure is too great and causes the protection rod to break as a whole, the pressure on the protection block is transmitted to the spring.

2. A high-salt wastewater heat recovery device according to claim 1, characterized in that: The second liquid outlet pipe is connected to a cooling mechanism, which includes a first storage box and a second storage box. The first storage box is provided with a cavity, and the second storage box is disposed in the cavity via a bracket. The second liquid outlet pipe passes through a side wall of the first storage box and is communicated with an inner cavity of the second storage box. The second storage box is used to store the solution transported by the second liquid outlet pipe. The second storage box is communicated with a first liquid discharge pipe. The output end of the first liquid discharge pipe passes through the side wall of the first storage box and extends outside the first storage box. The first liquid discharge pipe is used to transport the solution in the second storage box. A cooling channel is formed between the outer surface of the second storage box and the cavity, and the cooling channel is filled with condensate, and the condensate is used to cool the solution in the second storage box. A liquid inlet pipe is provided on one side of the cooling channel, and the condensate is introduced into the cooling channel through the liquid inlet pipe. A second liquid discharge pipe is provided at the upper end of the first storage box, and the second liquid discharge pipe is connected to the cooling channel. The second liquid discharge pipe is used to discharge the condensate in the cooling channel, thereby realizing the circulation of the condensate in the cooling channel. The second liquid discharge pipe is connected to a condenser, and the condenser is used to cool the solution transported from the cooling channel. The liquid inlet pipe is connected to the condenser, and the solution cooled by the condenser is transported back to the cooling channel through the liquid inlet pipe.

3. A high-salt wastewater heat recovery device according to claim 2, characterized in that: The upper end of the second storage box is provided with an opening and closing mechanism, and the opening and closing mechanism includes a baffle, a first guide rail, a second guide rail, a sliding block, and an electric push rod. The lower end of the baffle is fixedly set on the upper surface of the second storage box, and the upper end of the baffle is fixedly set on the upper end side wall of the first storage box. The first guide rail is set on the upper end inner side wall of the first storage box, and the second guide rail is set on the upper surface of the second storage box. The sliding block is slidingly set between the first guide rail and the second guide rail, and the electric push rod is set on the baffle, and the output shaft of the electric push rod is connected to the side wall of the sliding block. The electric push rod is used to drive the sliding block to slide left and right between the first guide rail and the second guide rail. A through hole is opened on the first guide rail, and the through hole passes through the upper end side wall of the first storage box and is connected to the upper end wall of the first storage box. The second drain pipe is connected, and a second temperature detector is provided in the cooling channel. The second temperature detector is used to detect the temperature of the condensate in the cooling channel in real time. The second temperature detector is electrically connected to the electric push rod. When the second temperature detector detects that the temperature of the condensate in the cooling channel rises, the electric push rod opens and drives the sliding block to the left, thereby opening the through hole. The condensate in the cooling channel is transported to the condenser through the second drain pipe for cooling. After cooling, it is transported back to the cooling channel to ensure that the condensate in the cooling channel is kept at a constant temperature, and then ensure that the solution in the second storage tank is kept at a constant temperature. When the second temperature detector detects that the condensate in the cooling channel reaches the set temperature, the electric push rod resets and drives the sliding block to reset, thereby closing the through hole.

4. The high-salt wastewater heat recovery device according to claim 1, characterized in that: The upper protective column is arranged on the lower surface of the upper protective plate, the lower protective column is arranged on the lower protective plate, the protective mechanism is arranged between the upper protective plate and the lower protective plate, the upper protective column and the lower protective column are arranged correspondingly, the lower end of the upper protective column is provided with a first arc groove, and the upper end of the lower protective column is provided with a second arc groove, a circular groove is formed between the first arc groove and the second arc groove, and the circular groove is used to insert the first pipe.

5. The high-salt wastewater heat recovery device according to claim 1, characterized in that: The lower end of the protection block is provided with an arc surface, and the arc surface can rotate along the surface of the lower fixing plate.

6. The high-salt wastewater heat recovery device according to claim 4, characterized in that: The protection mechanism is provided in at least two groups, and the two groups of protection mechanisms are respectively provided on the left and right sides of the upper protection column, and the surfaces of the first arc groove and the second arc groove are both provided with a protection layer.

7. The high-salt wastewater heat recovery device according to claim 1, characterized in that: The output end of the fourth pipeline is provided with a flow regulating valve, and the flow regulating valve is used to adjust the flow of the heated desalted water as needed to meet the actual needs of the powered low-temperature deaerator.

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