An energy-saving salt spray test chamber with waste heat recovery and self-cleaning nozzles

Abstract

This application relates to an energy-saving salt spray test chamber with waste heat recovery and self-cleaning nozzles, belonging to the technical field of industrial testing equipment. It includes a test chamber body, with a controller box fixedly installed on the outside of the body. The application utilizes a system where salt water from a salt water tank is pumped into a heat-conducting copper pipe via a first water pump. The heat-conducting copper pipe is partially placed inside an exhaust pipe, allowing for the recovery of heat from the high-temperature exhaust gas generated during the test to preheat the salt water, improving energy utilization and reducing heat waste. Combined with the PTFE anti-corrosion design of the heat-conducting copper pipe, external energy consumption is significantly reduced. The nozzle body integrates an ultrasonic transducer and a protective cover, automatically removing salt crystals through high-frequency vibration, completely eliminating the need for manual disassembly and maintenance. A three-way valve, linked to a temperature sensor and a second water pump, intelligently switches between preheating and direct supply paths to ensure a constant spray temperature. The entire device is automatically controlled by the controller box, with each module operating collaboratively to achieve both energy saving and anti-clogging goals.

Description

Technical Field

[0001] This application relates to the field of industrial testing equipment technology, and in particular to an energy-saving salt spray test chamber with waste heat recovery and self-cleaning nozzles. Background Technology

[0002] Salt spray corrosion testing is an important method for evaluating the corrosion resistance of materials in the industrial testing field. The salt spray test chamber, as the core equipment for this test, directly affects the accuracy and cost-effectiveness of the test results. With the increasing demand for energy conservation and automated maintenance in industry, how to reduce energy consumption and manual maintenance while ensuring testing accuracy has become a key research focus in this field.

[0003] Currently, traditional salt spray test chambers have certain limitations in practical applications. For example, the direct emission of high-temperature exhaust gas (above 80°C) generated during the test results in low energy utilization and a large amount of wasted heat energy. In addition, the conical nozzles are prone to salt crystal accumulation during salt spraying, which can easily lead to blockage after prolonged testing. Furthermore, manual disassembly and cleaning are still required, which seriously affects the efficiency of equipment use and the continuity of testing. Therefore, an energy-saving salt spray test chamber with waste heat recovery and self-cleaning nozzles is proposed. Utility Model Content

[0004] The purpose of this application is to provide an energy-saving salt spray test chamber with waste heat recovery and self-cleaning nozzles. It has the advantages of recovering the heat of high-temperature waste gas generated during the test to preheat the salt water, improving energy utilization and reducing heat waste, and automatically removing salt crystals in the nozzle body through high-frequency vibration, thus completely avoiding manual disassembly and cleaning maintenance. This solves the problems mentioned in the background technology.

[0005] This application provides an energy-saving salt spray test chamber with waste heat recovery and self-cleaning nozzles, employing the following technical solution: It includes a test chamber body; a controller box is fixedly installed on the outer side of the test chamber body; a sealing door is fixedly installed on the outer side of the test chamber body; a slot is formed on the inner side of the test chamber body; a component cavity is formed on the inner side of the test chamber body; an exhaust pipe is fixedly installed on the inner side of the component cavity; one end of the exhaust pipe penetrates the inner side of the test chamber body and communicates with the inner wall of the slot; a three-way valve is fixedly installed on the inner side of the test chamber body; and a nozzle body is fixedly connected to the output end of the three-way valve. An ultrasonic transducer is fixedly installed on the outside of the test chamber body. A saline tank is fixedly installed on the outside of the test chamber body. A first water pump is fixedly installed at the bottom of the saline tank. A heat-conducting copper pipe is fixedly connected to the output end of the first water pump. The other end of the heat-conducting copper pipe is fixedly connected to the outside of a three-way valve. The middle part of the heat-conducting copper pipe is located inside the exhaust pipe. A solenoid valve is fixedly installed on the outside of the heat-conducting copper pipe. A temperature sensor is fixedly installed on the outside of the heat-conducting copper pipe. The exhaust pipe is fixedly connected to an external air extraction device. An air inlet pipe is fixedly installed on the inside of the test chamber body. A valve is fixedly installed on the outside of the air inlet pipe.

[0006] By adopting the above technical solution, the brine in the brine tank is pumped into a heat-conducting copper pipe by a first water pump. The heat-conducting copper pipe is placed inside the exhaust pipe, which can recover the heat from the high-temperature waste gas generated during the test to preheat the brine, improve energy utilization, and reduce heat waste. Afterward, the ultrasonic transducer can generate high-frequency vibration to prevent the nozzle body from accumulating and clogging during the salt spraying process. This eliminates the need for frequent manual disassembly and maintenance, ensuring equipment efficiency and continuous testing.

[0007] Preferably, a protective cover is fixedly connected to the outside of the nozzle body, and the ultrasonic transducer is located inside the protective cover.

[0008] By adopting the above technical solution, the protective cover can protect the ultrasonic transducer from damage such as external collisions and corrosion during the test, extend the service life of the ultrasonic transducer, and thus ensure the stable operation of the nozzle body's self-cleaning function.

[0009] Preferably, the portion of the exhaust pipe located inside the component cavity is spirally arranged, and the heat-conducting copper pipe located inside the spiral section of the exhaust pipe is adapted to it.

[0010] By adopting the above technical solution, the spiral-shaped exhaust pipe increases the contact area and contact time between the exhaust pipe and the heat-conducting copper pipe, allowing the high-temperature waste gas and the brine in the heat-conducting copper pipe to exchange heat more fully, further improving the waste heat recovery effect and increasing energy utilization efficiency.

[0011] Preferably, a second water pump is fixedly installed on the outside of the brine tank, and the output end of the second water pump is connected to the input end of the three-way valve through a pipeline.

[0012] By adopting the above technical solution, the second water pump can directly deliver the brine in the brine tank to the three-way valve to realize the direct supply function. When the preheating of the heat-conducting copper pipe is not completed, the direct supply mode can be used to ensure that the salt spray test is carried out without interruption, thereby enhancing the stability and reliability of the equipment operation.

[0013] Preferably, a water storage tank is fixedly installed on the outside of the test chamber body, and a third water pump is fixedly installed on the outside of the water storage tank. The output end of the third water pump is connected to the input end of the nozzle body through a hose.

[0014] By adopting the above technical solution, the water storage tank is stably supplied with humidifying water to the nozzle body via the third water pump, so that the compressed air is fully saturated, thus inhibiting the formation of salt crystals from the source.

[0015] Preferably, the outer wall of the heat-conducting copper tube is coated with a polytetrafluoroethylene layer.

[0016] By adopting the above technical solution, the polytetrafluoroethylene layer sprayed on the outer wall of the heat-conducting copper pipe has good anti-corrosion and non-stick properties, which can prevent salt water and other substances from corroding the heat-conducting copper pipe, while avoiding crystallized salts and other substances from adhering to the inner wall of the heat-conducting copper pipe, ensuring its good thermal conductivity and service life, and maintaining the stable operation of the waste heat recovery system.

[0017] Preferably, a heating water tank is provided on the inner side of the main body of the test chamber, a drain pipe is fixedly installed on the inner side of the heating water tank, and a heating element is fixedly installed on the inner side of the heating water tank.

[0018] By adopting the above technical solution, the heating element in the heating water tank can heat the water to create the required temperature environment for the salt spray test. The drainage pipe facilitates the discharge of water used in the heating water tank, making it convenient to clean and maintain the heating water tank and ensuring the stability and reliability of the test environment.

[0019] Preferably, a perforated placement plate is placed inside the empty slot, and multiple measuring cups are placed on the upper side of the perforated placement plate. The top of the measuring cups is flared outward. Multiple workpiece placement rods are placed inside the main body of the test chamber, and a placement slot for placing the workpiece placement rods is opened inside the main body of the test chamber.

[0020] By adopting the above technical solution, the hollowed-out placement plate facilitates the placement of the measuring cup. The outward-expanding top of the measuring cup can effectively collect salt spray, making it convenient to measure the amount of salt spray deposition. At the same time, the workpiece placement rod, in conjunction with the placement groove, facilitates the fixed placement of the test workpiece, keeping the workpiece stable during the test and ensuring the accuracy and reliability of the test results.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] This energy-saving salt spray test chamber features waste heat recovery and self-cleaning nozzles. Saltwater from a tank is pumped into a heat-conducting copper pipe within an exhaust duct. This allows for the recovery of heat from the high-temperature exhaust gases generated during the test, preheating the saltwater and improving energy efficiency while reducing heat waste. The PTFE coating on the heat-conducting copper pipe further reduces external energy consumption. The nozzle body integrates an ultrasonic transducer and protective cover, automatically removing salt crystals through high-frequency vibration, eliminating the need for manual disassembly and maintenance. A three-way valve, linked to a temperature sensor and a second water pump, intelligently switches between preheating and direct supply paths to ensure a constant spray temperature. The entire system is automatically controlled by a controller box, ensuring coordinated operation of all modules and achieving both energy saving and anti-clogging goals. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the entire front of this application;

[0024] Figure 2 This is a three-dimensional structural diagram of the rear side of the entire application;

[0025] Figure 3 This is a schematic diagram of the internal three-dimensional structure of this application;

[0026] Figure 4 This is a cross-sectional structural diagram of the entire application;

[0027] Figure 5 This is a three-dimensional structural diagram of the exhaust pipe and the second water pump of this application.

[0028] In the picture:

[0029] 1. Test chamber body; 2. Controller box; 3. Sealed door panel; 4. Heating water tank; 5. Component cavity; 6. Exhaust pipe; 7. Three-way valve; 8. Nozzle body; 9. Ultrasonic transducer; 10. Protective cover; 11. Salt water tank; 12. First water pump; 13. Thermally conductive copper pipe; 14. Solenoid valve; 15. Temperature sensor; 16. Second water pump; 17. Water storage tank; 18. Third water pump; 19. Drainage pipe; 20. Air inlet pipe; 21. Empty tank; 22. Hollowed-out placement plate; 23. Workpiece placement rod; 24. Measuring cup; 25. Heating element. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1 - Appendix Figure 5 This application will be described in further detail below.

[0031] Example 1: An energy-saving salt spray test chamber with waste heat recovery and self-cleaning nozzles. Please refer to... Figure 1 , Figure 2 and Figure 5 The test chamber includes a main body 1, a controller box 2 fixedly installed on the outside of the main body 1, a sealing door 3 fixedly installed on the outside of the main body 1, a slot 21 opened on the inside of the main body 1, a component cavity 5 opened on the inside of the main body 1, an exhaust pipe 6 fixedly installed on the inside of the component cavity 5, one end of the exhaust pipe 6 penetrating the inside of the main body 1 and communicating with the inner wall of the slot 21, a three-way valve 7 fixedly installed on the inside of the main body 1, a nozzle body 8 fixedly connected to the output end of the three-way valve 7, an ultrasonic transducer 9 fixedly installed on the outside of the nozzle body 8, a brine tank 11 fixedly installed on the outside of the main body 1, a first water pump 12 fixedly installed at the bottom of the brine tank 11, a heat-conducting copper pipe 13 fixedly connected to the output end of the first water pump 12, and the exhaust pipe 6 located in the component cavity 5. The interior of cavity 5 is spirally arranged, and the heat-conducting copper pipe 13 located inside the spiral section of exhaust pipe 6 is adapted to it. The spiral shape of exhaust pipe 6 increases the contact area and contact time between exhaust pipe 6 and heat-conducting copper pipe 13, so that the high-temperature exhaust gas and the brine in heat-conducting copper pipe 13 can exchange heat more fully, further improving the waste heat recovery effect and improving energy utilization efficiency. The other end of heat-conducting copper pipe 13 is fixedly connected to the outside of three-way valve 7. The middle part of heat-conducting copper pipe 13 is located inside exhaust pipe 6. Solenoid valve 14 is fixedly installed on the outside of heat-conducting copper pipe 13. Temperature sensor 15 is fixedly installed on the outside of heat-conducting copper pipe 13. Exhaust pipe 6 is fixedly connected to external air extraction equipment. Inlet pipe 20 is fixedly installed on the inside of test chamber body 1. Valve is fixedly installed on the outside of inlet pipe 20.

[0032] Please refer to Figure 2 and Figure 3 A second water pump 16 is fixedly installed on the outside of the brine tank 11. The output end of the second water pump 16 is connected to the input end of the three-way valve 7 through a pipe. The second water pump 16 can directly deliver the brine in the brine tank 11 to the three-way valve 7 to realize the direct supply function. When the preheating of the heat-conducting copper pipe 13 is not completed, the direct supply mode can be used to ensure that the salt spray test is carried out without interruption, thereby enhancing the stability and reliability of the equipment operation. A water storage tank 17 is fixedly installed on the outside of the test chamber body 1. A third water pump 18 is fixedly installed on the outside of the water storage tank 17. The output end of the third water pump 18 is connected to the input end of the nozzle body 8 through a hose. The water storage tank 17 stably supplies humidifying water to the nozzle body 8 through the third water pump 18, so that the compressed air is fully saturated, thereby inhibiting the formation of salt crystals from the source.

[0033] Example 2: An energy-saving salt spray test chamber with waste heat recovery and self-cleaning nozzles. Please refer to... Figure 2 , Figure 3 and Figure 4A protective cover 10 is fixedly connected to the outside of the nozzle body 8, and the ultrasonic transducer 9 is located inside the protective cover 10. The protective cover 10 can protect the ultrasonic transducer 9 from damage such as external impact and corrosion during the test, extend the service life of the ultrasonic transducer 9, and thus ensure the stable operation of the self-cleaning function of the nozzle body 8. The outer wall of the heat-conducting copper tube 13 is coated with a polytetrafluoroethylene layer. The polytetrafluoroethylene layer coated on the outer wall of the heat-conducting copper tube 13 has good anti-corrosion and non-stick properties, which can prevent salt water and other substances from corroding the heat-conducting copper tube 13, and at the same time avoid the formation of deposits. Crystalline salts adhere to the inner wall of the heat-conducting copper pipe 13, ensuring its good thermal conductivity and service life, and maintaining the stable operation of the waste heat recovery system. A heating water tank 4 is provided on the inner side of the test chamber body 1. A drain pipe 19 is fixedly installed on the inner side of the heating water tank 4. A heating element 25 is fixedly installed on the inner side of the heating water tank 4. The heating element 25 in the heating water tank 4 can heat the water to create the required temperature environment for the salt spray test. The drain pipe 19 facilitates the discharge of water used in the heating water tank 4, making it convenient to clean and maintain the heating water tank 4, and ensuring the stability and reliability of the test environment.

[0034] Please refer to Figure 3 and Figure 4 A perforated placement plate 22 is placed inside the empty slot 21, and multiple measuring cups 24 are placed on the upper side of the perforated placement plate 22. The top of the measuring cups 24 is set outward. Multiple workpiece placement rods 23 are placed inside the test chamber body 1. The test chamber body 1 has a placement slot for placing the workpiece placement rods 23. The perforated placement plate 22 facilitates the placement of the measuring cups 24. The outward setting of the top of the measuring cups 24 can effectively collect salt spray and facilitate the measurement of salt spray deposition. At the same time, the workpiece placement rods 23 cooperate with the placement slot to facilitate the fixed placement of the test workpiece, so that the workpiece remains stable during the test and ensures the accuracy and reliability of the test results.

[0035] It should be noted that the pump body, valve body and sensor assembly in this equipment are all electrically connected to the control elements inside the controller box 2, thereby automatically regulating the coordinated operation of each module.

[0036] The implementation principle of this application embodiment is as follows: When the test is started, the first water pump 12 pumps the brine in the brine tank 11 into the heat-conducting copper pipe 13. At this time, the heat-conducting copper pipe 13 passes through the spiral exhaust pipe 6 and absorbs the waste heat of the high-temperature exhaust gas in the pipe to preheat the brine. Then, the temperature sensor 15 monitors the preheating temperature in real time. If the set threshold is not reached, the solenoid valve 14 closes the preheating path. At the same time, the second water pump 16 starts and directly feeds the unpreheated brine into the three-way valve 7 through the bypass to ensure that the salt spray test is carried out without interruption. If the preheating meets the standard, the solenoid valve 14 is opened to allow the preheated brine to flow into the three-way valve 7, thereby realizing the recovery of waste heat. External compressed air is then injected into the nozzle body 8, converting the mixed liquid into a mist that is sprayed into the interior of the test chamber body 1. Water in the heating tank 4 is then heated by the heating element 25 to maintain a humid and constant temperature environment. Water in the storage tank 17 is then pumped into the nozzle body 8 by the third water pump 18. The salt water and water are mixed and atomized within the nozzle body 8 and sprayed into the empty slot 21 to fully saturate the compressed air, inhibiting salt crystal formation at the source. The ultrasonic transducer 9 is then activated periodically, using high-frequency vibration to peel away salt crystals from the nozzle orifice. A protective cover 10 isolates the transducer from the salt mist. As the high-temperature exhaust gas is discharged through the exhaust pipe 6, its heat is continuously recovered by the heat-conducting copper pipe 13 within the spiral section. At this time, the polytetrafluoroethylene layer on the outside of the heat-conducting copper pipe 13 resists corrosion from the exhaust gas.

[0037] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. An energy-saving salt spray test chamber with waste heat recovery and self-cleaning nozzles, comprising a test chamber body (1), characterized in that: A controller box (2) is fixedly installed on the outside of the test chamber body (1). A sealing door plate (3) is fixedly installed on the outside of the test chamber body (1). A slot (21) is opened on the inside of the test chamber body (1). A component cavity (5) is opened on the inside of the component cavity (5). An exhaust pipe (6) is fixedly installed on the inside of the component cavity (5). One end of the exhaust pipe (6) passes through the inside of the test chamber body (1) and is connected to the inner wall of the slot (21). A three-way valve (7) is fixedly installed on the inside of the test chamber body (1). A nozzle body (8) is fixedly connected to the output end of the three-way valve (7). An ultrasonic transducer (9) is fixedly installed on the outside of the nozzle body (8). A brine tank (11) is fixedly installed on the outside. A first water pump (12) is fixedly installed at the bottom of the brine tank (11). A heat-conducting copper pipe (13) is fixedly connected to the output end of the first water pump (12). The other end of the heat-conducting copper pipe (13) is fixedly connected to the outside of a three-way valve (7). The middle part of the heat-conducting copper pipe (13) is located inside the exhaust pipe (6). A solenoid valve (14) is fixedly installed on the outside of the heat-conducting copper pipe (13). A temperature sensor (15) is fixedly installed on the outside of the heat-conducting copper pipe (13). The exhaust pipe (6) is fixedly connected to an external air extraction device. An air inlet pipe (20) is fixedly installed on the inside of the test chamber body (1). A valve is fixedly installed on the outside of the air inlet pipe (20).

2. The energy-saving salt spray test chamber with waste heat recovery and self-cleaning nozzle according to claim 1, characterized in that: A protective cover (10) is fixedly connected to the outside of the nozzle body (8), and the ultrasonic transducer (9) is located inside the protective cover (10).

3. The energy-saving salt spray test chamber with waste heat recovery and self-cleaning nozzle according to claim 1, characterized in that: The portion of the exhaust pipe (6) located inside the component cavity (5) is spirally arranged, and the heat-conducting copper pipe (13) located inside the spiral section of the exhaust pipe (6) is adapted to it.

4. The energy-saving salt spray test chamber with waste heat recovery and self-cleaning nozzle according to claim 1, characterized in that: A second water pump (16) is fixedly installed on the outside of the brine tank (11), and the output end of the second water pump (16) is connected to the input end of the three-way valve (7) through a pipe.

5. The energy-saving salt spray test chamber with waste heat recovery and self-cleaning nozzle according to claim 1, characterized in that: A water storage tank (17) is fixedly installed on the outside of the test chamber body (1), and a third water pump (18) is fixedly installed on the outside of the water storage tank (17). The output end of the third water pump (18) is connected to the input end of the nozzle body (8) through a hose.

6. The energy-saving salt spray test chamber with waste heat recovery and self-cleaning nozzle according to claim 1, characterized in that: The outer wall of the heat-conducting copper tube (13) is coated with a polytetrafluoroethylene layer.

7. An energy-saving salt spray test chamber with waste heat recovery and self-cleaning nozzles according to claim 1, characterized in that: The test chamber body (1) has a heating water tank (4) on its inner side, a drain pipe (19) is fixedly installed on the inner side of the heating water tank (4), and a heating element (25) is fixedly installed on the inner side of the heating water tank (4).

8. An energy-saving salt spray test chamber with waste heat recovery and self-cleaning nozzles according to claim 1, characterized in that: A hollow placement plate (22) is placed inside the hollow slot (21), and multiple measuring cups (24) are placed on the upper side of the hollow placement plate (22). The top of the measuring cups (24) is set outward. Multiple workpiece placement rods (23) are placed inside the test chamber body (1), and a placement slot for placing the workpiece placement rods (23) is opened on the inner side of the test chamber body (1).

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