Mixed heater flushing system and method

Abstract

The invention discloses a mixed heater flushing system and method, and relates to the technical field of mixed heaters, and the mixed heater flushing system comprises a liquid inlet assembly which comprises a clear water pipe, a steam pipe, a dosing pipe and a mixed heater; the flushing assembly comprises a flushing medium and a controllable valve, and the flushing medium is connected into the mixed heater through a second pipeline. The system has the beneficial effects that dirt and sediments in the heater are effectively removed through automatic detection and flushing functions, pipeline blockage is prevented, and the operation efficiency and stability of the system are remarkably improved. The sensor monitors pressure difference in real time, automatically triggers a flushing mode, reduces manual intervention, and prolongs the service life of equipment. The system is simple and convenient to operate and convenient to maintain, multiple monitoring devices ensure the operation safety and reliability, and the operation efficiency and safety of thermal power plant equipment are remarkably improved.

Description

Technical Field

[0001] The invention relates to the technical field of hybrid heaters, in particular to a hybrid heater flushing system and method. Background Art

[0002] The SQS-185 Hybrid Heater is a highly efficient device used to heat cold water to the required temperature. The core technology of this heater lies in its unique Rafael nozzle design, which ensures the effective mixing of water flow and steam, thus achieving a fast and uniform heating process. Specifically, water flows in through the throat of the nozzle, while steam is injected from multiple inclined holes, and the two are fully contacted and mixed during the process, ultimately producing hot water.

[0003] However, a major technical obstacle was encountered in practical application - scaling. Calcium ions in raw water are precipitated during the heating process. Over time, these deposits accumulate inside the inclined holes of the Rafale nozzle, causing the inclined holes to gradually narrow or even become completely blocked. Considering that the standard size of the inclined holes of the Rafale nozzle is about 4 mm, this scaling phenomenon is particularly serious and usually appears after about a month of operation.

[0004] When the inclined hole of the Rafale nozzle is blocked, the mixing process of steam and water flow is disturbed and the expected design effect cannot be achieved. This not only affects the heating efficiency, but also causes uneven distribution of water vapor inside the heater, which in turn causes strong mechanical vibration. Long-term vibration will not only accelerate the aging of the equipment and shorten its service life, but may also cause safety hazards. Summary of the invention

[0005] In view of the above problems existing in the prior art, the present invention is proposed.

[0006] Therefore, the first object of the present invention is to provide a hybrid heater flushing system that can solve the problems of Rafale nozzle blockage, resulting in unbalanced airflow and strong vibration of the entire hybrid heater.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a hybrid heater flushing system, comprising a liquid inlet assembly, including a clean water pipe, a steam pipe, a dosing pipe, and a hybrid heater, wherein the clean water pipe is connected to the end of the hybrid heater through a first pipe to provide a water source for the hybrid heater;

[0008] At least one set of flushing components includes a flushing medium and a controllable valve, and the flushing medium is connected to the hybrid heater through a second pipeline.

[0009] As a preferred solution of the hybrid heater flushing system of the present invention, the first pipe is provided with a first pressure gauge and a first temperature gauge for real-time monitoring of the pressure and temperature in the pipe, and a switch for controlling the on and off of the clean water;

[0010] The first pipeline is connected to the hybrid heater through a first branch to ensure uniform distribution of water flow.

[0011] As a preferred solution of the hybrid heater flushing system of the present invention, wherein: the steam pipe is connected to a group of the hybrid heaters through a third pipe;

[0012] The third pipeline is provided with a first valve and a second valve for controlling the flow rate of steam, and a drain port is provided on one side of the second valve for discharging condensed water;

[0013] The third pipeline is also provided with a second pressure gauge and a second temperature gauge for monitoring the pressure and temperature in the pipeline;

[0014] The third pipeline is connected to the three groups of hybrid heaters through three groups of second branches. Each group of second branches is provided with a drain pipe and an electric valve, and the electric valve is used to control the flow of steam entering the hybrid heater.

[0015] As a preferred solution of the hybrid heater flushing system of the present invention, wherein: the flushing assembly can be connected to the front and rear ends of the hybrid heater to flush the hybrid heater;

[0016] The flushing medium uses high-pressure water or compressed air as the flushing medium, which can effectively remove dirt and sediment inside the heater;

[0017] The second pipeline is provided with a sensor, and the sensor is used to detect whether the hybrid heater is blocked and control the switch of the controllable valve.

[0018] As a preferred solution of the hybrid heater flushing system of the present invention, the third pipeline also includes a second pressure gauge and a second temperature gauge, and the pipeline is connected to the hybrid heater through multiple groups of second tributaries.

[0019] As a preferred solution of the hybrid heater flushing system of the present invention, each group of the second branches is provided with a drain pipe and an electric valve, and the electric valve pumps the steam in the steam pipe into the hybrid heater.

[0020] As a preferred solution of the hybrid heater flushing system of the present invention, a sensor is arranged on the second pipeline, and the sensor can detect whether the hybrid heater is blocked and control the controllable valve.

[0021] As a preferred solution of the hybrid heater flushing system of the present invention, wherein: the dosing pipe is connected to the hybrid heater through a fourth pipe;

[0022] The fourth pipeline is provided with a regulating valve and is connected with the third branch.

[0023] Another object of the present invention is to provide a hybrid heater flushing method, which comprises the following steps: a liquid inlet component provides a water source and steam, and a dosing pipe adds a reagent;

[0024] In the flushing mode, the hybrid heater uses high-pressure water or compressed air to flush the front and rear ends of the hybrid heater through the flushing component to remove internal dirt and sediment.

[0025] As a preferred solution of the hybrid heater flushing method of the present invention, wherein: the flushing medium in the flushing component is high-pressure water or compressed air, which can effectively remove dirt and sediment inside the heater;

[0026] When the sensor detects that the pressure difference exceeds the preset threshold, the flushing mode is automatically triggered;

[0027] The sewage pipe can discharge the flushed sewage in time.

[0028] The beneficial effects of the present invention are as follows: the present invention provides an efficient hybrid heater flushing system, which can effectively remove dirt and sediment inside the heater through automatic detection and flushing functions, prevent pipe blockage, and significantly improve the operating efficiency and stability of the system. The sensor monitors the pressure difference in real time and automatically triggers the flushing mode, reducing manual intervention and extending the life of the equipment. The system is easy to operate and maintain, and multiple monitoring devices ensure the safety and reliability of operation, which significantly improves the operating efficiency and safety of thermal power plant equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 It is the principle diagram of the hybrid heater flushing system of the present invention.

[0031] Figure 2 It is a flow chart of the hybrid heater flushing method of the present invention. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0033] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0034] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0035] Example 1

[0036] Reference Figure 1 , which is the first embodiment of the present invention, and provides a hybrid heater flushing system, including a liquid inlet assembly 100, including a clean water pipe 101, a steam pipe 102, a dosing pipe 103, and a hybrid heater 104. The clean water pipe 101 is connected to the end of the hybrid heater 104 through a first pipe 301 to provide a water source for the hybrid heater 104;

[0037] At least one flushing component 200 includes a flushing medium 201 and a controllable valve 202 . The flushing medium 201 is connected to the hybrid heater 104 through a second pipe 302 .

[0038] It should be noted that the hybrid heater 104 in this embodiment is a raw water heater - a jet hybrid heater, specifically a SQS-185 hybrid heater. The clean water pipe 101 is used to pass the clean water / raw water required for the operation of the hybrid heater 104; and the steam pipe 102 passes the required steam. The dosing pipe 103 is used to add necessary agents to the system, such as preservatives or anti-scaling agents. The steam from the steam pipe 102 inhaled from the first pipeline 301 of the hybrid heater 104 meets the heated liquid from the clean water pipe 101 in the mixing tube. Due to the large temperature difference between the two, the steam quickly releases heat, causing the liquid temperature to rise. In the mixing tube, the liquid and steam are fully mixed through turbulence to ensure uniform heat transfer and improve heating efficiency. However, since calcium ions are generated after the raw water of the hybrid heater 104 is heated, the inclined tube of the heater's Lafarge nozzle is blocked in a large area, causing the water vapor in the heater to be heated unevenly, resulting in vibration of the hybrid heater. In view of this, a set of airflow compression pipe flushing components 200 are respectively installed at the front and rear of the hybrid heater body. First, a flushing port is installed on the shell of the hybrid heater 104 body; secondly, a second pipeline 302 is connected nearby, and an isolation door is installed in the middle.

[0039] Preferably, the flushing medium 201 in this embodiment is compressed air. The controllable valve 202 is used to control the inlet and outlet of the flushing medium to ensure the smooth progress of the flushing process. The second pipeline 302 connects the flushing medium 201 and the hybrid heater 104, and an isolation door is installed in the middle to close the pipeline when necessary. The second pipeline 302 is a compressed air pipe, which can be connected to the newly added flushing port on the hybrid heater housing.

[0040] Flushing process: When the hybrid heater 104 is blocked in a large area due to calcium ion deposition in the Rafale nozzle oblique tube, the controllable valve 202 in the flushing assembly 200 is opened, and compressed air enters the hybrid heater 104 through the second pipe 302. The high-speed flow of compressed air can effectively flush away the calcium ions and other impurities deposited in the nozzle, and restore the nozzle to be unobstructed. After the flushing is completed, the controllable valve 202 is closed to stop the inflow of compressed air, ensuring that the system resumes normal operation.

[0041] Example 2

[0042] Reference Figure 1 , which is the second embodiment of the present invention, and which is different from the first embodiment in that: the first pipe 301 is provided with a first pressure gauge 301a and a first temperature gauge 301b for real-time monitoring of the pressure and temperature in the pipe, and a switch 301c for controlling the on and off of clean water;

[0043] The first pipe 301 is connected to the hybrid heater 104 through the first branch 401 to ensure uniform distribution of water flow.

[0044] Furthermore, the steam pipe 102 is connected to a set of hybrid heaters 104 through a third pipe 303;

[0045] The third pipe 303 is provided with a first valve 303a and a second valve 303b for controlling the flow of steam, and a drain port 303c is provided on one side of the second valve 303b for draining condensed water;

[0046] The third pipeline 303 is also provided with a second pressure gauge 303d and a second temperature gauge 303e for monitoring the pressure and temperature in the pipeline;

[0047] The third pipeline 303 is connected to three groups of hybrid heaters 104 through three groups of second branches 402 . Each group of second branches 402 is provided with a drain pipe 402a and an electric valve 402b . The electric valve 402b is used to control the flow of steam entering the hybrid heater 104 .

[0048] Furthermore, the flushing assembly 200 can be connected to the front and rear ends of the hybrid heater 104 to flush the hybrid heater 104;

[0049] Flushing medium 201 uses high pressure water or compressed air as flushing medium, which can effectively remove dirt and sediment inside the heater;

[0050] A sensor 302 a is disposed on the second pipe 302 . The sensor 302 a is used to detect whether the hybrid heater 104 is blocked and control the switch of the controllable valve 202 .

[0051] Furthermore, the third pipeline 303 also includes a second pressure gauge 303d and a second temperature gauge 303e, and the pipeline 303 is connected to the hybrid heater 104 through multiple groups of second branches 402.

[0052] Furthermore, each group of second branches 402 is provided with a sewage pipe 402 a and an electric valve 402 b , and the electric valve 402 b pumps the steam in the steam pipe 102 into the hybrid heater 104 .

[0053] Furthermore, a sensor 302 a is disposed on the second pipe 302 , and the sensor 302 a can detect whether the hybrid heater 104 is blocked and control the controllable valve 202 .

[0054] Further, the dosing pipe 103 is connected to the hybrid heater 104 through the fourth pipe 304;

[0055] The fourth pipeline 304 is provided with a regulating valve 304 a and is connected to the third branch 403 .

[0056] It should be noted that the clean water pipe 101 is connected to the end of the hybrid heater 104 through the first pipe 301 to provide a water source for the hybrid heater. The first pipe 301 is provided with a first pressure gauge 301a and a first thermometer 301b for real-time monitoring of the pressure and temperature in the pipe; the switch 301c is used to control the on and off of the clean water. The first pipe is connected to the hybrid heater 104 through the first branch 401 to ensure uniform distribution of the water flow. The steam pipe 102 is connected to a group of hybrid heaters 104 through the third pipe 303. The third pipe 303 is provided with a first valve 303a and a second valve 303b for controlling the flow of steam; the drain port 303c is provided on one side of the second valve for discharging condensed water. The third pipe 303 is also provided with a second pressure gauge 303d and a second thermometer 303e for monitoring the pressure and temperature in the pipe. The third pipeline 303 is connected to three groups of hybrid heaters 104 through three groups of second branches 402. Each group of second branches 402 is provided with a drain pipe 402a and an electric valve 402b. The electric valve is used to control the flow of steam entering the hybrid heater.

[0057] Preferably, the flushing medium 201 uses high-pressure water or compressed air as the flushing medium, which can effectively remove dirt and sediment inside the heater. The controllable valve 202 is connected to the front and rear ends of the hybrid heater 104 through the second pipe 302 to flush the front and rear ends of the hybrid heater 104. A sensor 302a is provided on the second pipe 302, and the sensor 302a is used to detect whether the hybrid heater is blocked and control the switch of the controllable valve. The dosing pipe 103 is connected to the hybrid heater 104 through the fourth pipe 304. A regulating valve 304a is provided on the fourth pipe 304 to control the flow rate of the agent; the fourth pipe 304 is also connected to the third tributary 403 to ensure that the agent is evenly distributed from the tail of the hybrid heater 104 to the mixing chamber in the hybrid heater 104.

[0058] Normal operation mode; the clean water pipe 101 provides water to the hybrid heater 104 through the first pipe 301. The first pressure gauge 301a and the first thermometer 301b on the first pipe monitor the pressure and temperature in the pipe to ensure that the water supply conditions meet the requirements. The switch 301c controls the on and off of the clean water. The steam pipe 102 delivers steam to the hybrid heater 104 through the third pipe 303. The first valve 303a and the second valve 303b on the third pipe control the flow of steam, and the second pressure gauge 303d and the second thermometer 303e monitor the pressure and temperature in the pipe. Condensed water is discharged through the drain 303c. The dosing pipe 103 delivers the agent to the hybrid heater 104 through the fourth pipe 304, and the regulating valve 304a controls the flow of the agent to ensure that the agent is evenly distributed.

[0059] Flushing mode: The sensor 302a on the second pipe 302 detects the pressure difference of the hybrid heater 104. When the pressure difference exceeds the preset threshold, the sensor 302a sends a signal to the control system. After receiving the signal, the control system opens the controllable valve 202, and high-pressure water enters the front and rear ends of the hybrid heater 104 through the second pipe 302 to flush the inside of the heater. High-pressure water can effectively remove internal dirt and sediment. The sewage after flushing is discharged through the sewage pipe 402a to ensure that the inside of the heater is clean. After flushing, the controllable valve 202 is closed and the system returns to normal operation mode.

[0060] Table 1 shows the test results of the pressure difference inside the nozzle before and after the hybrid heater 104 is connected to the flushing assembly 200

[0061]

[0062] It can be seen from the above experimental data that the flushing assembly can significantly reduce the pressure difference inside the Rafale nozzle, and the pressure difference after each flushing is significantly lower than the pressure difference before flushing. Although the pressure difference will rise after each flushing, it is still maintained at a low level overall, and the effect of each flushing is very significant, with an average cleaning effect of 73.47%. The flushing assembly 200 has a continuous and stable improvement effect in preventing and solving the clogging problem of the hybrid heater 104, improving the overall performance and reliability of the system.

[0063] Table 2 shows the test results of the mechanical vibration amplitude and frequency generated by the device after the hybrid heater 104 is connected to the flushing component 200.

[0064]

[0065] It can be seen from the data in Table 2 that after the flushing component is connected, the mechanical vibration frequency of the hybrid heater 104 decreases slightly, but the change is small. Specifically, the average vibration frequency decreases from 25.01 Hz to 24.77 Hz. On the other hand, the mechanical amplitude of the hybrid heater 104 is significantly reduced. Specifically, the average amplitude decreases from 50.35 μm to 45.00 μm. The flushing component 200 can effectively reduce the dirt and sediment inside the hybrid heater, thereby reducing mechanical vibration and improving the stability and reliability of the system.

[0066] In summary, the present invention provides an efficient hybrid heater flushing system, which can effectively remove dirt and sediment inside the heater through automatic detection and flushing functions, prevent pipe blockage, and significantly improve the operating efficiency and stability of the system. The sensor monitors the pressure difference in real time and automatically triggers the flushing mode, reducing manual intervention and extending the life of the equipment. The system is easy to operate and maintain, and multiple monitoring devices ensure the safety and reliability of operation, which significantly improves the operating efficiency and safety of thermal power plant equipment.

[0067] Example 3

[0068] Example 3 Reference Figure 2 , which is the third embodiment of the present invention, and which is different from the first two embodiments in that: a hybrid heater flushing system is also provided, which includes a liquid inlet component 100 for providing water and steam, and a dosing pipe 103 for adding a drug; When the hybrid heater 104 is in the flushing mode, the flushing assembly 200 uses high-pressure water or compressed air to flush the front and rear ends of the hybrid heater 104 to remove internal dirt and sediment.

[0070] Further, the flushing medium 201 in the flushing assembly 200 is high-pressure water or compressed air, which can effectively remove dirt and sediment inside the heater;

[0071] When the sensor 302a detects that the pressure difference exceeds a preset threshold, the flushing mode is automatically triggered;

[0072] The sewage pipe 402a can discharge the flushed sewage in time.

[0073] It should be noted that the sensor 302a detects the pressure difference of the hybrid heater 104. When the pressure difference exceeds a preset threshold, the sensor sends a signal to the control system. After receiving the signal, the control system opens the controllable valve 202, and high-pressure water or compressed air enters the front and rear ends of the hybrid heater 104 through the second pipe 302 to flush the inside of the heater. The sewage after flushing is discharged through the drain pipe 402a to ensure the cleanliness of the inside of the heater. After flushing, the controllable valve 202 is closed and the system returns to normal operating mode.

[0074] Through the above-mentioned use method, the present invention can effectively solve the clogging problem of the hybrid heater during long-term use, and improve the operating efficiency and reliability of the system.

[0075] It is important to note that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A hybrid heater flushing system, characterized in that: include, A liquid inlet assembly (100) comprises a clean water pipe (101), a steam pipe (102), a drug-adding pipe (103), and a hybrid heater (104); the clean water pipe (101) is connected to an end of the hybrid heater (104) via a first pipe (301) to provide a water source for the hybrid heater (104); At least one flushing component (200) comprises a flushing medium (201) and a controllable valve (202), wherein the flushing medium (201) is connected to the hybrid heater (104) via a second pipe (302).

2. The hybrid heater flushing system according to claim 1, characterized in that: The first pipeline (301) is provided with a first pressure gauge (301a) and a first temperature gauge (301b) for real-time monitoring of the pressure and temperature in the pipeline, and a switch (301c) for controlling the on and off of clean water; The first pipe (301) is connected to the hybrid heater (104) through the first branch (401) to ensure uniform distribution of water flow.

3. The hybrid heater flushing system according to claim 2, characterized in that: The steam pipe (102) is connected to a group of the hybrid heaters (104) through a third pipe (303); The third pipeline (303) is provided with a first valve (303a) and a second valve (303b) for controlling the flow of steam, and a drain port (303c) is provided on one side of the second valve (303b) for draining condensed water; The third pipeline (303) is also provided with a second pressure gauge (303d) and a second temperature gauge (303e) for monitoring the pressure and temperature in the pipeline; The third pipeline (303) is connected to the three groups of hybrid heaters (104) through three groups of second branches (402), and each group of second branches (402) is provided with a sewage pipe (402a) and an electric valve (402b), and the electric valve (402b) is used to control the flow rate of steam entering the hybrid heater (104).

4. The hybrid heater flushing system according to claim 3, characterized in that: The flushing component (200) can be connected to the front and rear ends of the hybrid heater (104) to flush the hybrid heater (104); The flushing medium (201) uses high-pressure water or compressed air as a flushing medium, which can effectively remove dirt and sediment inside the heater; The second pipe (302) is provided with a sensor (302a), and the sensor (302a) is used to detect whether the hybrid heater (104) is blocked and control the switch of the controllable valve (202).

5. The hybrid heater flushing system according to claim 4, characterized in that: The third pipeline (303) also includes a second pressure gauge (303d) and a second temperature gauge (303e), and the pipeline (303) is connected to the hybrid heater (104) through multiple groups of second branches (402).

6. The hybrid heater flushing system according to claim 5, characterized in that: Each group of the second branches (402) is provided with a sewage pipe (402a) and an electric valve (402b), and the electric valve (402b) pumps the steam in the steam pipe (102) into the hybrid heater (104).

7. The hybrid heater flushing system according to claim 6, characterized in that: The second pipe (302) is provided with a sensor (302a), and the sensor (302a) can detect whether the hybrid heater (104) is blocked and control the controllable valve (202).

8. The hybrid heater flushing system of claim 7, wherein: The dosing pipe (103) is connected to the hybrid heater (104) via a fourth pipe (304); The fourth pipeline (304) is provided with a regulating valve (304a) and is connected to the third branch (403).

9. A hybrid heater flushing method, characterized in that: The hybrid heater flushing method comprises: The liquid inlet component (100) provides water and steam, and the dosing pipe (103) adds the agent; In the flushing mode, the hybrid heater (104) uses high-pressure water or compressed air through the flushing component (200) to flush the front and rear ends of the hybrid heater (104) to remove internal dirt and sediment.

10. The hybrid heater flushing method according to claim 9, characterized in that: The flushing medium (201) in the flushing assembly (200) is high-pressure water or compressed air, which can effectively remove dirt and sediment inside the heater; When the sensor (302a) detects that the pressure difference exceeds a preset threshold, the flushing mode is automatically triggered; The sewage pipe (402a) can discharge the sewage after flushing in time.

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