Radiator service life test device

Abstract

The utility model discloses a radiator service life test device, and relates to the technical field of test devices, the radiator service life test device comprises a water tank, a pressurization module, a pressure release module and a control module, the water tank is provided with a communication port, and the communication port is used for communicating with a radiator; the pressurizing module communicates with the water tank and is used for inflating the water tank; the pressure relief module is communicated with the water tank or the radiator and is used for releasing gas filled by the pressurization module; the control module is electrically connected to the pressurization module and the pressure relief module and is configured to control the pressurization module and the pressure relief module to work. According to the technical scheme, the pressurization module and the pressure release module are controlled to work through the control module, and the service life test of the radiator for the transformer is achieved.

Description

Technical Field

[0001] This application relates to the field of testing equipment technology, and in particular to a radiator life testing device. Background Technology

[0002] The radiator is a crucial component of a transformer. During actual operation, the internal pressure of the transformer fluctuates with changes in diurnal temperature range, and some of this pressure is regulated by the contraction and expansion of the radiator. This contraction and expansion adjustment of the radiator significantly tests its structural lifespan, requiring lifespan tests that simulate operating conditions required by industry standards. Utility Model Content

[0003] The main purpose of this application is to propose a radiator life testing device, which aims to realize the life testing of radiators for transformers.

[0004] To achieve the above objectives, the radiator life testing apparatus proposed in this application includes:

[0005] A water tank, wherein the water tank is provided with a connecting port for connecting to a radiator;

[0006] A pressurization module, connected to the water tank, is used to pressurize the water tank with air;

[0007] A pressure relief module, connected to the water tank or used to connect to the radiator, is used to release the gas introduced by the pressurization module;

[0008] A control module, electrically connected to the pressurization module and the depressurization module, is configured to control the operation of the pressurization module and the depressurization module.

[0009] In one embodiment, the radiator life testing device has a first airflow path communicating with the water tank, the pressurization module includes an air compressor, a first switching valve and a pressure regulating valve arranged sequentially in the first airflow path from upstream to downstream, and the control module includes a time control switch electrically connected to the first switching valve.

[0010] In one embodiment, the radiator life testing device further includes a pressure sensor located in the water tank.

[0011] In one embodiment, the pressurization module further includes a one-way valve disposed in the first charging air path. The one-way valve is located between the air compressor and the water tank and is used to allow one-way flow from the air compressor to the water tank.

[0012] In one embodiment, the radiator life test device further includes a second charging flow path, and the pressurization module further includes a second switching valve disposed in the second charging flow path. The one-way valve is disposed between the air compressor and the first switching valve, and the air inlet end of the second charging flow path is connected to the first charging flow path between the one-way valve and the first switching valve.

[0013] In one embodiment, the radiator life test device includes a first buffer tank and a first liquid level switch disposed on the first buffer tank, and has a connecting flow path with one end connected to the first buffer tank, the other end of the connecting flow path being used to connect to the upper oil collection pipe of the radiator, and the connecting port being used to connect to the lower oil collection pipe of the radiator.

[0014] In one embodiment, the upper side of the first buffer tank is provided with an exhaust port communicating with the external environment, and the pressure relief module includes the first buffer tank; the pressure relief module also includes a third switching valve disposed in the communicating flow path to exhaust gas through the communicating flow path.

[0015] In one embodiment, the upper side of the first buffer tank is provided with an exhaust port that connects to the external environment, and the pressure relief module includes the first buffer tank; the radiator life test device also has an exhaust flow path, the first buffer tank is connected to the water tank through the exhaust flow path, and the pressure relief module also includes a third switching valve provided in the exhaust flow path.

[0016] In one embodiment, the radiator life testing device further includes a first mounting base and a second mounting base. The first mounting base has a first flow cavity connected to the connecting port. The first mounting base is used for mounting the lower oil collection pipe and is connected to the lower oil collection pipe through the first flow cavity. The second mounting base has a second flow cavity connected to the connecting flow path. The second mounting base is used for mounting the upper oil collection pipe and is connected to the upper oil collection pipe through the second flow cavity.

[0017] In one embodiment, the radiator life testing device further includes a column, a first mounting base fixed to the column, the column having a sliding guide rail, and a second mounting base having a sliding part, the sliding part being slidably connected to the sliding guide rail along the length direction of the column.

[0018] In one embodiment, the connecting flow path includes a passageway for a telescopic tube, which connects the first buffer tank and the second flow cavity respectively.

[0019] In one embodiment, the radiator life testing device has a drainage path connected to the water tank. The radiator life testing device also includes a fourth switching valve, a second buffer tank, and a second liquid level switch. The second buffer tank is connected to the water tank, the second liquid level switch is installed in the second buffer tank, and the fourth switching valve is located on the drainage path and electrically connected to the second liquid level switch.

[0020] In one embodiment, the radiator life testing device further includes a third liquid level switch, which is installed in the water tank and positioned near the top of the water tank.

[0021] In one embodiment, the radiator life testing device further includes a fourth liquid level switch, which is installed in the water tank and located near the bottom of the water tank.

[0022] In one embodiment, the water tank is further provided with a water inlet, which is located near the bottom of the water tank.

[0023] In one embodiment, the radiator life testing device further includes rollers located at the bottom of the water tank.

[0024] The radiator life test device of this application controls the pressurization module and the depressurization module through the control module to periodically pressurize and depressurize the inside of the water tank. This allows the radiator connected to the water tank to complete the movement from the effective expansion working point to the effective contraction working point and back to the effective expansion working point according to the number of expansions and contractions required by industry standards. This enables the life test of the radiator for transformers, thereby ensuring the reliability of the radiator quality and reducing the risk of oil leakage during transformer operation. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0026] Figure 1 A schematic diagram of an embodiment of the radiator life testing device provided in this application;

[0027] Figure 2 A schematic diagram of another embodiment of the radiator life testing device provided in this application;

[0028] Figure 3 for Figure 1Assembly structure diagram of the radiator life test device;

[0029] Figure 4 for Figure 3 Side view of the radiator and column assembly;

[0030] Figure 5 for Figure 3 Axial view of the assembly of the radiator and the column;

[0031] Figure 6 for Figure 3 Top view of the radiator and column assembly;

[0032] Figure 7 for Figure 6 A schematic diagram showing the sliding fit between the second mounting base and the sliding guide rail;

[0033] Figure 8 A schematic diagram of a first mounting base embodiment provided in this application;

[0034] Figure 9 A schematic diagram of a structure of an embodiment of the second mounting base provided in this application;

[0035] Figure 10 This is a schematic diagram of the structure of an embodiment of the first buffer tank provided in this application;

[0036] Figure 11 This is a schematic diagram of an embodiment of the second buffer tank provided in this application.

[0037] Figure 12 A side view of an embodiment of the water tank provided in this application.

[0038] Explanation of icon numbers:

[0039] 100. Water tank; 110. Connecting port; 120. Water inlet; 210. First switching valve; 220. Second switching valve; 230. Air compressor; 240. Pressure regulating valve; 250. Check valve; 310. First buffer tank; 311. Exhaust port; 312. First inlet; 313. First fixed base; 320. Third switching valve; 330. Telescopic pipe; 400. Time control switch; 500. Pressure sensor; 610. First mounting base; 611. First flow chamber; 612. First mounting part; 620. Second mounting base; 621. Second flow chamber; 622. Second mounting part; 623. Third mounting section; 624, sliding section; 630, column; 631, sliding guide rail; 640, supporting inclined column; 710, second buffer tank; 711, drain outlet; 712, second inlet; 713, second fixed seat; 720, fourth switch valve; 810, first liquid level switch; 820, second liquid level switch; 830, third liquid level switch; 840, fourth liquid level switch; 900, roller; P1, first charging air path; P2, second charging air path; P3, connecting flow path; P4, exhaust flow path; P5, drain flow path; 201, upper oil collection pipe; 202, lower oil collection pipe; 203, heat sink.

[0040] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0041] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0042] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0043] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0044] This application proposes a radiator life testing device.

[0045] Please see Figure 1 , Figure 3 and Figure 12 In one embodiment of this application, the radiator life test device includes a water tank 100, a pressurization module, a depressurization module, and a control module. The water tank 100 is provided with a connection port 110 for connecting to the radiator. The pressurization module is connected to the water tank 100 and is used to pressurize the water tank 100 with air. The depressurization module is connected to the water tank 100 or is used to connect to the radiator to release the gas pressurized by the pressurization module. The control module is electrically connected to the pressurization module and the depressurization module and is configured to control the operation of the pressurization module and the depressurization module.

[0046] According to the current industry standard JB / T 5347-2013, "Panel Radiators for Transformers," one requirement for the life test of radiators is that the radiator completes one full cycle by moving from its effective expansion operating point (30 kPa) to its effective contraction operating point (normal pressure) and back to its effective expansion operating point. The cycle speed is once per minute, for a total of 10,000 cycles. For ease of description later, this complete cycle required by the industry standard will be referred to as one expansion-contraction cycle of the radiator. In one expansion-contraction cycle, the radiator first contracts and then expands, and the radiator needs to perform 10,000 expansion-contraction cycles at a frequency of once per minute.

[0047] The radiator life test device proposed in this application is used to conduct life tests on transformer radiators. This radiator life test device can simulate the working conditions of life test under the requirements of industry standards. Specifically, this application controls the pressurization module and the pressure application module through a controller, which can adjust the pressure change inside the water tank 100, thereby controlling the radiator to expand and contract. Furthermore, it can control the number and frequency of the radiator's expansion and contraction actions to meet the detection requirements of the life test.

[0048] The water tank 100 is a test chamber designed to meet industry standard requirements. When the test apparatus performs a life test on the radiator, the water tank 100 is filled with water. The water tank 100 has one or more connecting ports 110 for connecting the water tank 100 to the radiator under test. By pressurizing and depressurizing the water tank 100, the internal pressure environment of the radiator is simulated, allowing the radiator to switch between its effective expansion and contraction operating points.

[0049] The pressurization module is connected to the water tank 100 and is used to fill the water tank 100 with gas (usually air or other inert gas) to increase the pressure inside the water tank 100. The depressurization module can be connected to the water tank 100 or directly to the radiator, and is used to release the gas filled by the pressurization module to release the pressure inside the water tank 100. The control module controls the operation of the pressurization and depressurization modules through electrical connections. The control module is programmed to initiate the pressurization and depressurization processes and repeat them a predetermined number of times. It is worth mentioning that during the expansion and contraction of the radiator, the pressurization module fills the water tank 100 with gas, enabling the radiator to reach its effective expansion operating point, and the depressurization module releases the gas filled by the pressurization module, enabling the radiator to contract back to its effective contraction operating point. The pressurization and depressurization modules work alternately. Of course, the pressurization module and the depressurization module can also be used to realize other working states of the radiator life test device. In this case, after the pressurization module fills in the gas, the pressure in the water tank 100 can be lower than or higher than the effective expansion working point; after the depressurization module releases the gas, the pressure in the water tank 100 can also be higher than the effective contraction working point. The pressurization module and the depressurization module can operate independently without alternating operation.

[0050] Radiators undergo life testing using a radiator life testing device to evaluate their durability and stability. Understandably, a radiator correctly designed and manufactured according to specifications should not exhibit significant performance degradation or failure after undergoing the pressure cycle test of a life test. The life tests provided by the radiator life testing device help identify potential design flaws or material problems, ensuring that the radiator has good durability and reliability, and can operate safely and effectively within its expected service life, thereby guaranteeing that the final product delivered to the user is reliable.

[0051] High-quality radiators reduce oil leakage problems caused by insufficient lifespan, thereby lowering the risk of oil leakage during transformer operation. At the same time, high-quality radiators help reduce operating costs. This not only improves the safety and stability of transformer operation but also optimizes economic benefits.

[0052] The radiator life test device of this application controls the pressurization module and the depressurization module through the control module to periodically pressurize and depressurize the inside of the water tank 100. This allows the radiator connected to the water tank 100 to complete the movement from the effective expansion working point to the effective contraction working point and back to the effective expansion working point according to the number of expansions and contractions required by industry standards. This enables the life test of the radiator for transformers, thereby ensuring the reliability of the radiator quality and reducing the risk of oil leakage during transformer operation.

[0053] In one implementation, please refer to Figure 1 and Figure 3 The radiator life test device has a first charging air path P1 connected to the water tank 100. The pressurization module includes an air compressor 230, a first switching valve 210 and a pressure regulating valve 240 arranged sequentially in the first charging air path P1 from upstream to downstream. The control module includes a time control switch 400 electrically connected to the first switching valve 210.

[0054] The first charging gas path P1 is connected to the water tank 100, allowing gas to be charged into the water tank 100. The air compressor 230, located upstream of the first charging gas path P1, is the power source providing gas pressure for the entire system. The air compressor 230 generates the required compressed gas, ensuring that the water tank 100 and the radiator are both at the radiator's effective expansion point (30 kPa) after the compressed gas is introduced into the water tank 100. The first switching valve 210, located downstream of the air compressor 230, controls whether the gas can continue to advance along the first charging gas path P1. The first switching valve 210 can be opened and closed via a timer switch 400 electrically connected to the control module, thus achieving precise control of the pressurization process. The pressure regulating valve 240, located downstream of the first switching valve 210, adjusts the pressure of the gas after passing through the first switching valve 210, ensuring that the gas input into the water tank 100 reaches the predetermined pressure value, thereby guaranteeing pressure stability and consistency under each test condition. As part of the control module, the timer switch 400, connected electrically to the first switching valve 210, can open or close at expansion and contraction frequency intervals as required by industry standards. This enables automated control of the pressurization process, allowing the pressurization and depressurization processes to cycle automatically according to a set period, helping to accurately simulate the pressure changes required by the radiator under industry standards. Simultaneously, the timer switch 400 also functions as a counter, ensuring that the pressurization and depressurization processes follow the expansion and contraction cycles required by industry standards.

[0055] In other embodiments, the pressure regulating valve 240 may also be located between the air compressor 230 and the second switching valve 220.

[0056] In one implementation, please refer to Figure 1 and Figure 3 The radiator life test device also includes a pressure sensor 500, which is located in the water tank 100.

[0057] A pressure sensor 500 is installed on the water tank 100 to monitor pressure changes inside the tank in real time. By installing the pressure sensor 500 on the water tank 100, real-time and continuous monitoring of the pressure inside the tank can be achieved, ensuring that the pressurization and depressurization processes are performed accurately according to the expansion and contraction frequency parameters required by industry standards. During pressurization, the pressure sensor 500 can monitor whether the pressure inside the water tank 100 has reached the effective expansion operating point; when the depressurization process ends, the pressure sensor 500 can monitor whether the pressure inside the water tank 100 has reached the effective contraction operating point, thereby controlling the repeated pressurization and depressurization processes.

[0058] Furthermore, the pressure sensor 500 provides instant feedback, allowing the system to automatically adjust operating parameters based on actual pressure values ​​(e.g., by adjusting the pressure regulating valve 240), helping to maintain ideal test conditions and improve test consistency and repeatability. When abnormally high or low pressure is detected, the pressure sensor 500 can trigger an alarm or cause the system to take automatic measures (such as stopping pressurization or initiating pressure relief) to avoid potential safety risks or equipment damage. In addition, the data collected by the pressure sensor 500 can be used for subsequent analysis to help improve product design, optimize manufacturing processes, and predict the actual lifespan of radiators.

[0059] In other embodiments, the pressure sensor 500 may also be disposed on the heat sink, or in the second flow cavity 621 of the second mounting base 620 for mounting the heat sink.

[0060] In one implementation, please refer to Figure 1 and Figure 3 The pressurization module also includes a one-way valve 250 located in the first charging air path P1. The one-way valve 250 is located between the air compressor 230 and the water tank 100 and is used to allow the air compressor 230 to flow unilaterally to the water tank 100.

[0061] The check valve 250 can be located upstream or downstream of the first switching valve 210. The check valve 250 ensures that the compressed gas generated by the air compressor 230 can smoothly enter the water tank 100, while preventing gas or liquid in the water tank 100 from flowing back into the air compressor 230 through the first charging flow path P1, thus avoiding potential damage to the air compressor 230. For example, if pressure fluctuations occur during pressurization or the system suddenly shuts down, without the check valve 250, substances in the water tank 100 might flow back into the air compressor 230, causing equipment damage or contamination. The check valve 250 also helps maintain system pressure stability. By preventing gas backflow, the check valve 250 ensures a smooth pressurization process.

[0062] In one implementation, please refer to Figure 1 and Figure 3 The radiator life test device also has a second charging flow path P2. The pressurization module also includes a second switching valve 220 located in the second charging flow path P2. A one-way valve 250 is located between the air compressor 230 and the first switching valve 210. The air inlet of the second charging flow path P2 is connected to the first charging flow path P1 between the one-way valve 250 and the first switching valve 210.

[0063] The air compressor 230 can also inject gas into the water tank 100 through the second charging flow path P2, allowing the system to pressurize the water tank 100 through different paths, thereby increasing the system's flexibility. The air inlet of the second charging flow path P2 is after the one-way valve 250 and before the first switching valve 210. The second switching valve 220 is located on the second charging flow path P2 and is used to control the gas flow on the second charging flow path P2, allowing the system to select either the first or second charging flow path P2 for charging under different conditions. The one-way valve 250 is located between the air compressor 230 and the first switching valve 210 to ensure that the compressed air used in either the first or second charging flow path P1 can only flow unidirectionally from the air compressor 230 to the downstream components, preventing backflow. The one-way valve 250 can prevent gas from flowing back from the first charging flow path P1 and the second charging flow path P2, thereby reducing the number of one-way valves 250, simplifying the structure of the radiator life test device, and reducing manufacturing costs.

[0064] In other embodiments, the air inlet of the second charging flow path P2 may also be located upstream of the one-way valve 250 and the first switching valve 210. The second charging flow path P2 may be additionally equipped with a one-way valve 250 to control the flow direction of the second charging flow path P2 independently.

[0065] In one implementation, please refer to Figure 1 and Figure 3The radiator life test device includes a first buffer tank 310 and a first liquid level switch 810 provided on the first buffer tank 310, and has a connecting flow path P3 connected to the first buffer tank 310 at one end, the other end of the connecting flow path P3 is used to connect to the upper oil collection pipe 201 of the radiator, and the connecting port 110 is used to connect to the lower oil collection pipe 202 of the radiator.

[0066] The connecting port 110 connects the water tank 100 to the lower oil collection pipe 202 of the radiator, allowing liquid in the water tank 100 to flow into the radiator. One end of the connecting flow path P3 is connected to the first buffer tank 310, and the other end is connected to the upper oil collection pipe 201 of the radiator, allowing liquid in the water tank 100 to drain into the first buffer tank 310 through the connecting flow path P3 after entering the radiator. (See also...) Figure 10 The first buffer tank 310 has an exhaust port 311 and a first inlet 312 connected to the flow path P3. Liquid and gas in the radiator enter the first buffer tank 310 through the first inlet 312, and gas is discharged through the exhaust port 311. The first buffer tank 310 is provided with a first fixing seat 313, which is used for mounting a first liquid level switch 810. When the first liquid level switch 810 is triggered, it indicates that the liquid overflow in the radiator has caused the liquid level inside the first buffer tank 310 to reach a preset value.

[0067] Some radiators have a height difference from the water tank 100. For radiators whose height is greater than the water tank 100, some space in the radiator is not filled with liquid. During pressurization, this may cause local stress concentration or additional pressure changes due to compressed air expansion, which may mask the true structural weaknesses or lead to misjudgment. At the same time, some manufacturing defects, micro-cracks, or other potential leaks are not easy to detect, which is not conducive to the life test of the radiator. Therefore, before the pressurization process to bring the radiator to the effective expansion operating point and the depressurization process to bring the radiator to the effective contraction operating point, the life test of the radiator includes a detection state initiation process that checks whether the radiator is filled with liquid by connecting the flow path P3 and the first buffer tank 310.

[0068] In the initial state, the liquid in the water tank 100 flows into the radiator through the connecting port 110. The air compressor 230 is started to inflate the water tank 100, and the liquid in the water tank 100 continues to flow into the radiator under the action of air pressure. When the radiator is full of liquid, the liquid overflows into the first buffer tank 310 through the connecting flow path P3 and triggers the first liquid level switch 810, indicating that the radiator is full of liquid at this time.

[0069] It is worth mentioning that during this inflation process, the first switch valve 210 is in the closed state, and the second switch valve 220 is in the open state, with gas entering the water tank 100 through the second inflation flow path P2. This inflation process is not monitored by the time control switch 400. This inflation action is not a contraction action, which avoids both excessive inflation time causing all the liquid in the water tank 100 to be drained and insufficient inflation time causing the radiator to not be filled with liquid. At the same time, this inflation action is not counted in the number of contraction actions to avoid confusion with the inflation operation at the effective expansion working point, which would result in the number of actions in the test being less than 10,000.

[0070] During this inflation process, gas can also enter the water tank 100 through the first inflation flow path P1. The inflation process can be stopped by directly controlling the air compressor 230 to shut down when the first liquid level switch 810 is triggered. The number of expansion and contraction actions can be adjusted to ensure that the effective expansion working point is reached with 10,000 inflation operations. In this case, there is no need to set up a second inflation flow path P2 and a second switching valve 220, thus simplifying the structure of the radiator life testing device and reducing manufacturing costs.

[0071] In other embodiments, the connecting flow path P3 and the first buffer tank 310 may not be provided. The first liquid level switch 810 may be directly provided on the top of the radiator or in the second flow cavity 621 of the second mounting base 620 for installing the radiator.

[0072] In one implementation, please refer to Figure 1 and Figure 3 The first buffer tank 310 has an exhaust port 311 on its upper side that connects to the external environment. The pressure relief module includes the first buffer tank 310. The pressure relief module also includes a third switching valve 320 located in the connecting flow path P3 to exhaust gas through the connecting flow path P3.

[0073] The exhaust port 311 is located on the upper side of the first buffer tank 310, connecting to the external environment. When needed, it discharges the gas inside the first buffer tank 310 into the atmosphere, thereby depressurizing the water tank 100 and the radiator, allowing the radiator to reach its effective contraction point. The third switch valve 320 is installed on the connecting flow path P3. By controlling the opening and closing of the third switch valve 320, the on / off control of the connecting flow path P3 can be achieved. During the detection state startup process, the third switch valve 320 is in the open state, allowing the liquid overflowing from the radiator to enter the first buffer tank 310 through the connecting flow path P3. During the pressurization process, the third switch valve 320 is in the closed state, keeping the radiator and water tank 100 in a closed state during pressurization, ensuring that the radiator can reach its effective expansion point. During the depressurization process, the first switch valve 210 and the second switch valve 220 are in the closed state, and the third switch valve 320 is in the open state, allowing the gas introduced during the pressurization process to enter the first buffer tank 310 through the connecting flow path P3 and be discharged from the exhaust port 311. The first buffer tank 310 also serves to buffer the venting during the pressure relief process. The pressure relief process utilizes the connecting flow path P3 as the venting flow path P4, requiring only one third switching valve 320. This not only eliminates the need for an additional venting flow path P4 but also reduces the number of third switching valves 320, thereby simplifying the structure of the radiator life test device and lowering manufacturing costs. Using the connecting flow path P3 as the venting flow path P4 during the pressure relief process also ensures that the gas above the radiator can be discharged through the venting connecting flow path P3 during the start-up process in the test state.

[0074] In another implementation, please refer to Figure 2 The first buffer tank 310 is provided with an exhaust port 311 on its upper side that connects to the external environment. The pressure relief module includes the first buffer tank 310. The radiator life test device also has an exhaust flow path P4. The first buffer tank 310 is connected to the water tank 100 through the exhaust flow path P4. The pressure relief module also includes a third switch valve 320 located in the exhaust flow path P4.

[0075] One end of the exhaust flow path P4 is connected to the first buffer tank 310, and the other end is directly connected to the water tank 100. The connecting flow path P3 and the exhaust flow path P4 are two independent flow paths, each equipped with a third switching valve 320. During the start-up process in the detection state, the third switching valve 320 on the exhaust flow path P4 is closed, while the third switching valve 320 on the connecting flow path P3 is open, allowing liquid overflowing from the radiator to enter the first buffer tank 310 through the connecting flow path P3. During the depressurization process, the third switching valve 320 on the connecting flow path P3 is closed, while the third switching valve 320 on the exhaust flow path P4 is open, allowing gas introduced during the pressurization process to enter the first buffer tank 310 through the exhaust flow path P4 and exit from the exhaust port 311. Under normal conditions, the connecting flow path P3 and the exhaust flow path P4 do not interfere with each other. When the exhaust flow path P4 malfunctions, the connecting flow path P3 can serve as a backup exhaust flow path P4 to perform the function of venting during the depressurization process.

[0076] In one implementation, please refer to Figure 1 and Figure 3 The radiator life test device also includes a first mounting base 610 and a second mounting base 620. The first mounting base 610 has a first flow cavity 611, which is connected to the connecting port 110. The first mounting base 610 is used for mounting the lower oil collection pipe 202 and is connected to the lower oil collection pipe 202 through the first flow cavity 611. The second mounting base 620 has a second flow cavity 621, which is connected to the connecting flow path P3. The second mounting base 620 is used for mounting the upper oil collection pipe 201 and is connected to the upper oil collection pipe 201 through the second flow cavity 621.

[0077] The radiator includes an upper oil collecting pipe 201, a lower oil collecting pipe 202, and multiple heat dissipation fins 203 arranged axially at intervals along the oil collecting pipes. One end of each heat dissipation fin 203 is connected to the upper oil collecting pipe 201, and the other end is connected to the lower oil collecting pipe 202, communicating with both pipes. The lower oil collecting pipe 202 is mounted relative to the water tank 100 via a first mounting base 610 and communicates with the water tank 100 via a first flow passage 611 and a connecting port 110, allowing liquid in the water tank 100 to enter the radiator through the connecting port 110 and the first flow passage 611. The upper oil collecting pipe 201 is mounted relative to the water tank 100 via a second mounting base 620 and communicates with the connecting flow path P3 via a second flow passage 621, allowing liquid entering the radiator to overflow into the first buffer tank 310 via the second flow passage 621 and the connecting flow path P3, thus achieving the pressure relief process of the radiator. The upper oil pipe 201 is connected to the connecting flow path P3 through the second flow cavity 621. When conducting life tests on different radiators, the upper oil pipe 201 can be directly connected to the second mounting base 620. The connecting flow path P3 does not need to be replaced with the radiator, which simplifies the test operation process and improves the test efficiency.

[0078] In other embodiments, the connecting flow path P3 can also be directly connected to the upper oil collection pipe 201.

[0079] In one implementation, please refer to Figures 4 to 6 The radiator life test device also includes a column 630, a first mounting base 610 fixedly mounted on the column 630, a sliding guide rail 631 provided on the column 630, and a second mounting base 620 provided with a sliding part 624, which is slidably connected to the sliding guide rail 631 along the length of the column 630.

[0080] Please see Figure 4 and Figure 8 One end of the first mounting base 610 is directly fixed to the column 630, making the position of the first mounting base 610 fixed. The other end is provided with a first mounting part 612, which is used to connect the lower oil collection pipe 202 of the radiator. The first mounting part 612 and the lower oil collection pipe 202 are detachably connected, specifically through flange connection or threaded connection, etc.

[0081] Please see Figure 4 , Figure 7 and Figure 9The second mounting base 620 has a second mounting part 622 and a third mounting part 623 located at both ends of the second flow cavity 621. The second mounting part 622 is used to connect the upper oil collection pipe 201 of the radiator. The second mounting part 622 and the upper oil collection pipe 201 are detachably connected, specifically through flange connection or threaded connection. The third mounting part 623 is used to connect the column 630. The third mounting part 623 is provided with a sliding part 624. The sliding guide rail 631 is set on the column 630. The sliding part 624 is used to cooperate with the sliding guide rail 631. The second mounting base 620 can move freely along its length and slide to adjust its position to adapt to radiators of different heights or models, increasing the application range and flexibility of the radiator life test device. The radiator life test device can be adapted to radiators with a center distance of 500mm to 4000mm between the upper oil collection pipe 201 and the lower oil collection pipe 202 according to national standards.

[0082] Further, please refer to Figure 3 The radiator life test device also includes a support column 640, which is inclined and connected at one end to the upper part of the column 630, and the other end to the water tank 100, or fixed to the ground or workbench. The support column 640 is used to support the column 630 and stabilize radiators that are too long.

[0083] In other embodiments, the second mounting base 620 may also be fixedly mounted on the column 630.

[0084] In one implementation, please refer to Figure 3 The connecting flow path P3 includes the passage of the telescopic tube 330, which is connected to the first buffer tank 310 and the second flow cavity 621 respectively.

[0085] The telescopic tube 330 is a freely extendable pipe, whose length can be adjusted within a certain range without affecting the flow of the internal medium. One end of the telescopic tube 330 is connected to the first buffer tank 310, and the other end is connected to the second flow chamber 621 in the second mounting base 620. The telescopic tube 330 establishes communication between the first buffer tank 310 and the second flow chamber 621, ensuring that even when the second mounting base 620 moves up and down due to position adjustment, liquid or gas can still flow smoothly from the radiator to the first buffer tank 310. The design of the telescopic tube 330 allows the second mounting base 620 to slide and adjust its height along the column 630 as needed, while maintaining an effective connection with the first buffer tank 310, accommodating radiators of different sizes for testing.

[0086] In other embodiments, the telescopic tube 330 is also configured as a regular flexible tube with a relatively long length, so that even if the second mounting base 620 moves to the top of the column 630, the tube can still be adapted to connect the first buffer tank 310 and the second flow chamber 621.

[0087] In one implementation, please refer to Figure 1 and Figure 3 The radiator life test device has a drainage path P5 connected to the water tank 100. The radiator life test device also includes a fourth switch valve 720, a second buffer tank 710, and a second liquid level switch 820. The second buffer tank 710 is connected to the water tank 100. The second liquid level switch 820 is installed on the second buffer tank 710. The fourth switch valve 720 is located on the drainage path P5 and is electrically connected to the second liquid level switch 820.

[0088] Drainage path P5 is used as a channel for discharging liquid from water tank 100. A fourth switch valve 720 is installed on drainage path P5 to control the opening and closing of the drainage process. The second buffer tank 710 is connected to water tank 100, and drainage path P5 is used to discharge liquid from water tank 100. One end of drainage path P5 is connected to the second buffer tank 710, and the other end is connected to water tank 100, allowing liquid in water tank 100 to be discharged into the second buffer tank 710 through drainage path P5. (See also...) Figure 11 The second buffer tank 710 has a drain outlet 711 and a second inlet 712 connected to the drainage path P5. Liquid in the water tank 100 enters the second buffer tank 710 through the second inlet 712 and exits through the drain outlet 711. The second buffer tank 710 is equipped with a second fixing seat 713 for mounting a second liquid level switch 820. When the liquid level reaches a preset value, indicating that the liquid level inside the water tank 100 is at least lower than the flow outlet, the second liquid level switch 820 sends a signal to the control system or directly controls the action of the fourth switching valve 720. At this point, the entire drainage process is complete, and the tested radiator can be removed, the next radiator installed, and its life test performed.

[0089] In other embodiments, the second buffer tank 710 may be omitted, the second liquid level switch 820 may be directly installed at the bottom of the water tank 100, and the fourth switch valve 720 may be directly installed at the drain outlet 711.

[0090] In one implementation, please refer to Figure 1 and Figure 3 The radiator life test device also includes a third liquid level switch 830, which is installed in the water tank 100 and located near the top of the water tank 100.

[0091] During the test, the liquid in the water tank 100 must be maintained between the maximum and minimum limit levels. A third level switch 830 is installed on the water tank 100, positioned near the top, to monitor whether the liquid level in the tank approaches the maximum limit level during the test. When the liquid level reaches the set upper limit, the third level switch 830 sends an alarm signal to the control system and automatically shuts off the pressurization operation to prevent liquid overflow during pressurization due to excessively high levels, which could cause equipment contamination or safety accidents.

[0092] Furthermore, the third liquid level switch 830 can form an interlock control mechanism with the fourth switch valve 720 on the drainage path P5. For example, when the third liquid level switch 830 detects a high liquid level, it can automatically start the drainage process to ensure that the liquid level in the water tank 100 is always within a safe range.

[0093] In one implementation, please refer to Figure 1 and Figure 3 The radiator life test device also includes a fourth liquid level switch 840, which is installed in the water tank 100 and located near the bottom of the water tank 100.

[0094] The fourth liquid level switch 840 is installed on the water tank 100 and positioned near the bottom of the tank. It is used to monitor whether the liquid level in the water tank 100 drops to the minimum safe level during the test. When the liquid level in the water tank 100 drops close to the bottom due to circulation or leakage, the fourth liquid level switch 840 can send an alarm signal to the control system and automatically shut down the pressurization operation to prevent the equipment from operating without a medium and to avoid the test results being affected by excessively low liquid levels.

[0095] In one implementation, please refer to Figure 3 The water tank 100 is also provided with a water inlet 120, which is located near the bottom of the water tank 100.

[0096] Inlet 120 is used to inject liquid into water tank 100. It is usually equipped with a corresponding gate valve or interface for connecting to an external water source or replenishment equipment. Inlet 120 is located near the bottom of water tank 100, and can also be used as a backup outlet when the drainage path P5 fails. Furthermore, inlet 120 facilitates the complete emptying of water tank 100 for cleaning or maintenance when necessary, and also allows for direct observation and inspection of the bottom of water tank 100 for issues such as sediment accumulation.

[0097] In other embodiments, the water inlet 120 may also be located at other locations in the water tank 100, such as near the middle or top of the water tank 100. The water inlet 120 is only used for water filling, and an additional spare water outlet may be provided near the bottom of the water tank 100.

[0098] In one implementation, please refer to Figure 3 and Figure 12 The radiator life test device also includes rollers 900, which are located at the bottom of the water tank 100.

[0099] The casters 900, mounted on the bottom of the water tank 100, are typically made of durable materials, possess a certain load-bearing capacity, and have a locking mechanism to ensure the water tank 100 remains in place during operation. The casters 900 allow the entire radiator life testing apparatus to be easily moved, facilitating repositioning as needed or conducting tests in different locations. When installing or rearranging the experimental environment, the water tank 100 with casters 900 is easier to position and adjust, reducing the labor costs and time required for moving heavy objects. It also allows for more flexible spatial layout within the laboratory; when the radiator life testing apparatus is not in use, it can be moved to a corner or other location that does not occupy the main work area.

[0100] In one embodiment, the outer surface of the water tank 100 is provided with a plurality of reinforcing ribs at intervals to improve the structural strength of the water tank 100.

[0101] Radiator life testing includes testing the startup process, pressurization process, depressurization process, and drainage process:

[0102] After installing the radiator, fill the water tank 100 with water through the water inlet 120. The detection state start-up process is as follows: close the first switch valve 210, open the second switch valve 220 and the third switch valve 320, start the air compressor 230 to provide air pressure, and the air provided by the air compressor 230 passes through the check valve 250, the second switch valve 220, the water tank 100, the radiator, the third switch valve 320, and the first buffer tank 310 in sequence. When the first liquid level switch 810 is activated, it indicates that the radiator has been filled with water, and the detection state start-up process ends.

[0103] After the radiator is filled with water, the pressurization process begins. The second switch valve 220 and the third switch valve 320 are closed, and the first switch valve 210 is opened. The air compressor 230 is started to provide air pressure. The air supplied by the air compressor 230 passes sequentially through the check valve 250, the first switch valve 210, the pressure regulating valve 240, and the water tank 100, bringing the entire radiator life test device to the effective expansion operating point (30 kPa). The radiator life test device then begins the depressurization process. The first switch valve 210 and the second switch valve 220 are closed, and the third switch valve 320 is opened. When the pressure reading of the pressure sensor 500 is 0 (both the pressure reading of the pressure sensor 500 and 30 kPa are gauge pressures relative to the current ambient atmospheric pressure), the depressurization process ends. Simultaneously, the pressurization process is repeated to complete one life test cycle. The timer switch 400 controls the radiator life test device to depressurize from 30 kPa to atmospheric pressure and then pressurize back to 30 kPa, with the time taken being one minute and counted once.

[0104] After the radiator has completed 10,000 expansion and contraction cycles, the drainage process is initiated. The first switch valve 210 and the third switch valve 320 are closed, and the second switch valve 220 and the fourth switch valve 720 are opened. The air compressor 230 is started to provide air pressure. The air supplied by the air compressor 230 passes sequentially through the check valve 250, the second switch valve 220, the water tank 100, the fourth switch valve 720, and the second buffer tank 710. The fourth switch valve 720 is located at the bottom of the water tank 100. When all the water in the water tank 100 is drained, the second liquid level switch 820 is activated, and the entire drainage process ends. At this point, the radiator that has been tested can be removed.

[0105] Throughout the entire test of the radiator, it is necessary to ensure that there is water in the water tank 100. The upper liquid level is controlled by the third liquid level switch 830 and the lower liquid level is controlled by the fourth liquid level switch 840. When either the third liquid level switch 830 or the fourth liquid level switch 840 is activated, the control module will control the air compressor 230 to stop working to ensure that the liquid level in the water tank 100 is within a safe range.

[0106] The above description is merely an exemplary embodiment of this application and does not limit the scope of protection of this application. Any equivalent structural transformations made based on the technical concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the scope of protection of this application.

Claims

1. A radiator life testing device, characterized in that, include: A water tank (100) is provided with a connecting port (110) for connecting to a radiator; A pressurization module, connected to the water tank (100), is used to pressurize the water tank (100) with air; A pressure relief module, connected to the water tank (100) or used to connect to the radiator, is used to release the gas charged by the pressurization module; A control module, electrically connected to the pressurization module and the depressurization module, is configured to control the operation of the pressurization module and the depressurization module.

2. The radiator life testing device as described in claim 1, characterized in that, The radiator life test device has a first air supply path (P1) connected to the water tank (100). The pressurization module includes an air compressor (230), a first switching valve (210) and a pressure regulating valve (240) arranged sequentially in the first air supply path (P1) from upstream to downstream. The control module includes a time control switch (400) electrically connected to the first switching valve (210).

3. The radiator life testing device as described in claim 2, characterized in that, The radiator life test device also includes a pressure sensor (500), which is located in the water tank (100).

4. The radiator life testing device as described in claim 2, characterized in that, The pressurization module also includes a one-way valve (250) disposed in the first air supply path (P1). The one-way valve (250) is disposed between the air compressor (230) and the water tank (100) and is used to allow the air compressor (230) to flow unilaterally to the water tank (100).

5. The radiator life testing device as described in claim 4, characterized in that, The radiator life test device also has a second charging flow path (P2), and the pressurization module further includes a second switching valve (220) disposed in the second charging flow path (P2). The one-way valve (250) is disposed between the air compressor (230) and the first switching valve (210). The air inlet end of the second charging flow path (P2) is connected to the first charging flow path (P1) between the one-way valve (250) and the first switching valve (210).

6. The radiator life testing device as described in claim 1, characterized in that, The radiator life test device includes a first buffer tank (310) and a first liquid level switch (810) disposed on the first buffer tank (310), and has a connecting flow path (P3) with one end connected to the first buffer tank (310), the other end of the connecting flow path (P3) being used to connect to the upper oil collection pipe (201) of the radiator, and the connecting port (110) being used to connect to the lower oil collection pipe (202) of the radiator.

7. The radiator life testing device as described in claim 6, characterized in that, The first buffer tank (310) has an exhaust port (311) on its upper side that connects to the external environment, and the pressure relief module includes the first buffer tank (310); The pressure relief module also includes a third switching valve (320) disposed in the connecting flow path (P3) to exhaust gas through the connecting flow path (P3); Alternatively, the radiator life test device may also have an exhaust flow path (P4), through which the first buffer tank (310) is connected to the water tank (100), and the pressure relief module may also include a third switching valve (320) located in the exhaust flow path (P4).

8. The radiator life testing device as described in claim 6, characterized in that, The radiator life test device further includes a first mounting base (610) and a second mounting base (620). The first mounting base (610) has a first flow cavity (611) which is connected to the connecting port (110). The first mounting base (610) is used for mounting the lower oil collection pipe (202) and is connected to the lower oil collection pipe (202) through the first flow cavity (611). The second mounting base (620) has a second flow cavity (621) which is connected to the connecting flow path (P3). The second mounting base (620) is used for mounting the upper oil collection pipe (201) and is connected to the upper oil collection pipe (201) through the second flow cavity (621).

9. The radiator life testing device as described in claim 8, characterized in that, The radiator life test device further includes a column (630), a first mounting base (610) fixedly mounted on the column (630), the column (630) having a sliding guide rail (631), and a second mounting base (620) having a sliding part (624), the sliding part (624) being slidably connected to the sliding guide rail (631) along the length direction of the column (630).

10. The radiator life testing apparatus as described in claim 9, characterized in that, The connecting flow path (P3) includes a passage of a telescopic tube (330), which connects the first buffer tank (310) and the second flow cavity (621) respectively.

11. The radiator life testing apparatus as described in claim 1, characterized in that, The radiator life test device has a drainage path (P5) connected to the water tank (100). The radiator life test device also includes a fourth switch valve (720), a second buffer tank (710), and a second liquid level switch (820). The second buffer tank (710) is connected to the water tank (100), and the second liquid level switch (820) is installed on the second buffer tank (710). The fourth switch valve (720) is located on the drainage path (P5) and is electrically connected to the second liquid level switch (820).

12. The radiator life testing device as described in claim 1, characterized in that, The radiator life test device also includes a third liquid level switch (830), which is installed in the water tank (100) and located near the top of the water tank (100); And / or, the radiator life test device further includes a fourth liquid level switch (840), which is installed in the water tank (100) and located near the bottom of the water tank (100).

13. The radiator life testing apparatus as described in claim 1, characterized in that, The water tank (100) is also provided with a water inlet (120), which is located near the bottom of the water tank (100).

14. The radiator life testing apparatus as described in claim 1, characterized in that, The radiator life test device also includes a roller (900), which is located at the bottom of the water tank (100).

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