A refrigerant thermal stability on-line detection device

Abstract

The application relates to a refrigerant thermal stability online detection device, and belongs to the technical field of refrigerant detection. The structure of the detection device comprises a main flow pipe and an auxiliary flow pipe. One end of the auxiliary flow pipe is arranged at one end of the main flow pipe, and the one end of the auxiliary flow pipe is communicated with the main flow pipe. A driving assembly is slidably arranged in the one end of the auxiliary flow pipe. The other end of the auxiliary flow pipe is arranged in the other end of the main flow pipe, and a throttling assembly is arranged on the other end of the auxiliary flow pipe. A detection assembly is slidably arranged in the auxiliary flow pipe. The detection assembly comprises a guide rod and a detection block. The two ends of the guide rod are fixedly arranged at the two ends in the auxiliary flow pipe. The detection block is slidably connected with the guide rod and the auxiliary flow pipe. The application has the technical effect of simultaneously monitoring the temperature and flow of refrigerant and directly observing the changes of the two.

Description

Technical Field

[0001] This application relates to the technical field of refrigerant detection, and in particular to an online refrigerant thermal stability detection device. Background Technology

[0002] During the operation of refrigerant transmission and related refrigeration and heat exchange equipment, the thermal stability of the refrigerant directly determines the equipment's operating efficiency, service life, and operational safety. Abnormal fluctuations in refrigerant temperature, flow rate, and pressure can lead to increased energy consumption, accelerated component wear, and even safety hazards such as pipeline leaks and equipment failures. Therefore, real-time online detection and control of refrigerant thermal stability has become a key link in ensuring the stable operation of the refrigerant transmission system. Existing online refrigerant thermal stability detection devices are mostly used between refrigerant transmission pipelines. They mainly collect refrigerant temperature through temperature sensors to achieve preliminary monitoring of refrigerant operating conditions. However, these devices have relatively simple structural designs and suffer from insufficient handling of abnormal refrigerant thermal stability conditions and poor linkage, making them difficult to adapt to the monitoring needs of complex refrigerant operating conditions.

[0003] Regarding the aforementioned technologies, the inventors believe that they lack the ability to simultaneously monitor the temperature and flow rate of the refrigerant, and cannot intuitively observe changes in either, nor can they address abnormal situations in the thermal stability of the refrigerant. Summary of the Invention

[0004] To address the aforementioned technical problems, this application provides an online refrigerant thermal stability testing device.

[0005] This application provides an online refrigerant thermal stability testing device, which adopts the following technical solution: An online refrigerant thermal stability testing device includes a main flow pipe and an auxiliary flow pipe. One end of the auxiliary flow pipe is disposed at one end of the main flow pipe and is connected to the main flow pipe. A driving component is slidably disposed inside one end of the auxiliary flow pipe. The other end of the auxiliary flow pipe passes through the other end of the main flow pipe and is provided with a throttling component. A detection component is slidably disposed inside the auxiliary flow pipe. The detection component includes a guide rod and a detection block. The two ends of the guide rod are respectively fixedly disposed at both ends inside the auxiliary flow pipe. The detection block is slidably connected to the guide rod and the auxiliary flow pipe. A distance sensor is disposed on the auxiliary flow pipe for detecting the position of the detection block within the auxiliary flow pipe.

[0006] By adopting the above technical solution, the design of connecting the main flow pipeline and the auxiliary flow pipeline ensures the normal delivery of the refrigerant while allowing the testing operation to proceed independently of the main flow through the auxiliary flow pipeline. This prevents the testing process from affecting the normal operation of the refrigerant system and ensures that the test sample is consistent with the operating conditions of the main refrigerant, thus improving the accuracy of the test. One end of the auxiliary flow pipeline has a built-in sliding drive component that receives refrigerant pressure and slides. The other end of the auxiliary flow pipeline passes through the main flow pipeline and is equipped with a throttling component. By subsequently adjusting the diameter of the main flow pipeline, it can coordinate with the testing process to control the refrigerant flow and ensure... The system ensures stable refrigerant operation during fault detection and can quickly intervene when an anomaly is detected. Temperature is monitored and regulated via a throttling component, and flow rate is controlled. The detection component employs a structure where a guide rod and detection block are slidably connected. The guide rod is fixed at both ends to ensure the detection block's sliding track, preventing offset and detection errors. The detection block is simultaneously slidably connected to both the guide rod and the auxiliary flow pipeline, further enhancing sliding stability. A distance sensor on the auxiliary flow pipeline monitors the detection block's position in real time, indirectly feeding back refrigerant pressure, flow rate, and other operating parameters through the block's displacement, providing quantitative data support for online refrigerant thermal stability monitoring.

[0007] Preferably, the driving assembly includes a driving block and a limiting spring; the driving block is slidably disposed inside one end of the auxiliary flow pipeline; the limiting spring is sleeved on the driving block, one end of the limiting spring is fixedly disposed on the auxiliary flow pipeline, and the other end of the limiting spring is fixedly disposed on the driving block, and the driving block is used to drive the detection block to slide along the guide rod and the auxiliary flow pipeline.

[0008] By adopting the above technical solution, the drive block is slidably set at one end of the auxiliary flow pipeline, directly bearing the pressure generated by the change in refrigerant flow and sliding to drive the detection block to move. The limit spring is sleeved on the drive block and fixed at both ends, which can play an elastic limiting and resetting role for the sliding of the drive block. When the refrigerant pressure fluctuates, the driving force is adaptively adjusted by the extension and contraction of the spring, so that the drive block always maintains a dynamic balance with the refrigerant pressure, thereby driving the detection block to slide smoothly and reducing detection error.

[0009] Preferably, the throttling component includes a mounting bracket, and a temperature mechanism and a first liquid-filled expansion member are respectively provided on both sides of the mounting bracket. The first liquid-filled expansion member is fixedly mounted on the mounting bracket and is connected to the other end of the auxiliary flow pipeline.

[0010] By adopting the above technical solution, the mounting bracket serves as the carrier for the temperature mechanism and the first liquid-filled expansion component. The first liquid-filled expansion component is connected to the other end of the auxiliary flow pipeline, directly receiving the pressure medium signal in the auxiliary flow pipeline. This allows the first liquid-filled expansion component to expand or contract, timely cooperating with the sliding of the detection block to adjust the flow status of the main flow pipeline. The first liquid-filled expansion component regulates the refrigerant flow and pressure, while the temperature mechanism monitors and protects the refrigerant temperature, avoiding detection or regulation errors caused by mutual interference between components. The first liquid-filled expansion component is fixed to the mounting bracket, ensuring stable position during its expansion and contraction, accurately acting on the main flow pipeline, effectively changing the effective cross-sectional area of ​​the main flow pipeline, thereby regulating the refrigerant flow, and providing stable operating condition control support for refrigerant thermal stability testing.

[0011] Preferably, the temperature mechanism includes a mounting housing and a second liquid-filled expansion member; the mounting housing is fixedly mounted on the mounting frame, a mounting port is provided in the middle of one side of the mounting housing, an upper water inlet is provided at the upper part of one side of the mounting housing, and a lower water inlet is provided at the lower part of one side of the mounting housing; a water outlet is provided on the other side of the mounting housing, and the second liquid-filled expansion member is fixedly mounted on the mounting housing, and the mounting housing communicates with the second liquid-filled expansion member through the water outlet.

[0012] By adopting the above technical solution, the mounting housing is fixed to the mounting frame, ensuring the overall stability of the temperature mechanism and preventing vibration during refrigerant flow that could cause component displacement or damage. This also facilitates the coordinated layout with the first liquid-filled expansion component. An upper and lower water inlet are provided on one side of the mounting housing to ensure stable and comprehensive refrigerant introduction, guaranteeing that the refrigerant entering the housing can fully contact the internal temperature-sensing component to detect refrigerant temperature changes. An installation port is provided in the middle of the mounting housing, providing an installation position and ensuring that the temperature-sensing component can directly sense the refrigerant temperature. The mounting housing is connected to the second liquid-filled expansion component through the water outlet, allowing for stable delivery of the refrigerant from the housing to the second component. This enables the transmission of the expansion or contraction actions of the second liquid-filled expansion component. In case of abnormal temperature, the second liquid-filled expansion component quickly triggers a protective action to block refrigerant flow. Simultaneously, it works collaboratively with the first liquid-filled expansion component to achieve independent temperature and flow rate control and protection, improving the monitoring capability of refrigerant thermal stability.

[0013] Preferably, the mounting housing is provided with a baffle and two sets of sliding rods inside. The sliding rods are located on the other side of the mounting housing and are fixedly connected to the mounting housing. The baffle is slidably disposed on the sliding rods. The upper part of the baffle is provided with an upper interface, and the lower part of the baffle is provided with a lower interface. A top rod is provided on one side of the bottom of the baffle. A first spring is sleeved on the upper part of the sliding rod. One end of the first spring is fixedly disposed on the top of the mounting housing, and the other end of the first spring abuts against the top of the baffle.

[0014] By adopting the above technical solution, two sets of sliding rods guide and limit the baffle, effectively improving the accuracy of action and operational stability. The baffle has upper and lower interfaces, which switch different flow paths according to the refrigerant temperature to achieve differentiated response control at high and low temperatures, adapting to the thermal stability protection requirements of refrigerant under different temperature conditions. The first spring provides elastic compression and automatic reset to the baffle, and works in conjunction with the force linkage of the push rod to enable the baffle to quickly respond to temperature signals and return to its original position in time, improving the temperature regulation tracking performance. The push rod on the baffle provides transmission. According to the temperature change, the baffle is pushed to slide, and at a preset value, the outlet is connected through the upper and lower interfaces to trigger the action of the second liquid filling expansion component, ensuring rapid throttling and flow interruption when the refrigerant temperature is abnormal, and improving the safety of online control of refrigerant thermal stability.

[0015] Preferably, a temperature sensing unit is provided inside the mounting housing. The temperature sensing unit includes a temperature sensing tank, a capillary tube, a temperature sensing cylinder, and a lifting block. The temperature sensing tank is fixedly installed inside the mounting opening. The temperature sensing cylinder is fixedly installed inside the mounting housing, located below the baffle. The lifting block is slidably installed inside the temperature sensing cylinder and abuts against the top rod. One end of the capillary tube communicates with the temperature sensing tank, and the other end of the capillary tube communicates with the temperature sensing cylinder. A thermosensitive liquid is provided inside the temperature sensing tank, and the thermosensitive liquid drives the lifting block to slide along the inside of the temperature sensing cylinder through temperature changes.

[0016] By adopting the above technical solution, the temperature-sensing tank, capillary tube, and temperature-sensing cylinder work together with the thermosensitive liquid to sense changes in refrigerant temperature in real time, relying on the physical properties of thermal expansion and contraction to achieve temperature sensing. The capillary tube connects the temperature-sensing tank and the temperature-sensing cylinder, enabling rapid transmission of changes in the volume of the thermosensitive liquid, driving the lifting block to rise and fall. The lifting block directly contacts the baffle rod for transmission, and the temperature change is directly converted into the displacement of the baffle. The temperature-sensing tank is set at the installation port, which can fully contact the refrigerant, avoiding deviation between the detected temperature and the actual refrigerant temperature, and greatly improving the accuracy of thermal stability monitoring.

[0017] Preferably, the guide rod has a hollow cavity inside, and an identifier block is slidably disposed within the hollow cavity of the guide rod.

[0018] Preferably, a drive rod is provided on the other side of the bottom of the baffle, a drive port is provided at the bottom of the mounting housing, a piston block is slidably disposed in the drive port, one end of the drive rod is fixed to the bottom of the baffle, the other end of the drive rod is fixed to the piston block, a guide tube is provided between the drive port and the guide rod, one end of the guide tube passes through the main flow pipe and is connected to the drive port, the other end of the guide tube passes through the auxiliary flow pipe and is connected to the hollow cavity inside the guide rod.

[0019] By adopting the above technical solution, the guide rod adopts a hollow cavity structure and has a built-in sliding indicator block to provide feedback on changes in refrigerant temperature and achieve visual monitoring of the refrigerant's thermal state. The baffle drives the piston block through the drive rod, converting the displacement caused by temperature changes into pressure changes within the hollow cavity. The closed-loop pipe connects the drive port to the hollow cavity of the guide rod, transmitting pressure signals and causing the indicator block to move synchronously with the baffle, so that the temperature change corresponds to the position of the indicator block. This achieves synchronous linkage between the temperature sensing action and the indicator block, providing feedback on refrigerant temperature changes.

[0020] Preferably, a sealing ring is provided at the connection between one end of the guide tube and the main flow channel, and at the connection between the other end of the guide tube and the auxiliary flow channel.

[0021] By adopting the above technical solution, the sealing ring effectively seals the connection gap between the conductive pipe and the main flow pipe and the auxiliary flow pipe, preventing leakage of internal pressure medium, ensuring stable and reliable pressure transmission, and avoiding deviation of the indicator block and failure of temperature feedback.

[0022] Preferably, a first observation window is provided on the auxiliary flow pipeline, and a second observation window is provided on the guide rod.

[0023] By adopting the above technical solution, the position of the detection block can be directly and intuitively observed through the first observation window, and the refrigerant flow and pressure conditions of the pipeline can be quickly determined, realizing online monitoring of flow status; the displacement of the marker block inside the guide rod can be clearly viewed through the second observation window, and the refrigerant temperature change and thermal stability status can be visually judged in real time; the first and second observation windows are used together to realize external visual inspection of dual parameters of flow and temperature.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. The mounting bracket serves as the carrier for the temperature mechanism and the first liquid-filled expansion component. The first liquid-filled expansion component is connected to the other end of the auxiliary flow pipeline, directly receiving the pressure medium signal within the auxiliary flow pipeline. This allows the first liquid-filled expansion component to expand or contract, promptly coordinating with the sliding of the detection block to adjust the flow status of the main flow pipeline. The first liquid-filled expansion component regulates the refrigerant flow and pressure, while the temperature mechanism monitors and protects the refrigerant temperature, avoiding detection or regulation errors caused by mutual interference between components. The first liquid-filled expansion component is fixed to the mounting bracket, ensuring stable positioning during its expansion and contraction, allowing it to accurately act on the main flow pipeline, effectively changing the effective cross-sectional area of ​​the main flow pipeline, thereby regulating the refrigerant flow and providing stable operating condition control support for refrigerant thermal stability testing.

[0025] 2. The mounting housing is fixed to the mounting bracket, ensuring the overall stability of the temperature mechanism and preventing vibration during refrigerant flow that could cause component displacement or damage. It also coordinates with the first liquid-filled expansion component. An upper and lower water inlet are located on one side of the mounting housing to ensure stable and comprehensive refrigerant introduction, guaranteeing that the refrigerant entering the housing can fully contact the internal temperature-sensing component to detect refrigerant temperature changes. An installation port is located in the middle of the mounting housing, providing an installation position and ensuring that the temperature-sensing component can directly sense the refrigerant temperature. The mounting housing connects to the second liquid-filled expansion component via the water outlet, allowing for stable delivery of the refrigerant from the housing to the second component. This enables the transmission of the expansion or contraction actions of the second liquid-filled expansion component. In case of abnormal temperature, the second liquid-filled expansion component quickly triggers a protective action to block refrigerant flow. Simultaneously, it works collaboratively with the first liquid-filled expansion component to achieve independent temperature and flow rate control and protection, enhancing the monitoring capability of refrigerant thermal stability. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure in the embodiment.

[0027] Figure 2 yes Figure 1 A magnified view of part A in the middle.

[0028] Figure 3 This is a cross-sectional schematic diagram of the internal structure of the main flow pipeline and the auxiliary flow pipeline in the embodiment.

[0029] Figure 4 yes Figure 3 A magnified view of part B in the middle.

[0030] Figure 5 This is a cross-sectional schematic diagram of the internal structure of the temperature mechanism in the embodiment.

[0031] Figure 6 This is a cross-sectional schematic diagram of the internal structure of the temperature sensing unit in the embodiment.

[0032] Explanation of reference numerals in the attached drawings: 1. Main flow pipe; 2. Auxiliary flow pipe; 3. Drive assembly; 31. Drive block; 32. Limit spring; 4. Throttling assembly; 41. Mounting bracket; 42. Temperature mechanism; 421. Mounting housing; 4211. Mounting port; 4212. Outlet; 4213. Drive port; 4214. Piston block; 4215. Upper inlet; 4216. Lower inlet; 422. Second liquid filling expansion component; 423. Baffle; 4231. Upper connection 4232, Lower interface; 4233, Top rod; 4234, Drive rod; 424, Temperature sensing unit; 4241, Temperature sensing tank; 4242, Capillary tube; 4243, Temperature sensing cylinder; 4244, Lifting block; 43, First liquid filling expansion component; 5, Detection assembly; 51, Guide rod; 511, Hollow cavity; 512, Identifier block; 52, Detection block; 6, Conductor tube; 7, First observation window; 8, Second observation window; 9, Sliding rod; 91, First spring. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0034] This application discloses an online refrigerant thermal stability testing device. (Refer to...) Figure 1 , Figure 2 and Figure 3 It includes a main flow pipe 1 and an auxiliary flow pipe 2; one end of the auxiliary flow pipe 2 is located at one end of the main flow pipe 1, and the other end of the auxiliary flow pipe 2 is connected to the main flow pipe 1; a driving component 3 is slidably installed inside one end of the auxiliary flow pipe 2; the other end of the auxiliary flow pipe 2 passes through the other end of the main flow pipe 1, and a throttling component 4 is installed on the other end of the auxiliary flow pipe 2; a detection component 5 is slidably installed inside the auxiliary flow pipe 2; the detection component 5 includes a guide rod 51 and a detection block 52. The two ends of the guide rod 51 are fixedly installed inside the auxiliary flow pipeline 2. The detection block 52 is slidably connected to the guide rod 51 and the auxiliary flow pipeline 2. A distance sensor is installed on the auxiliary flow pipeline 2 to detect the position of the detection block 52 inside the auxiliary flow pipeline 2. The guide rod 51 has a hollow cavity 511 inside, and an identification block 512 is slidably installed inside the hollow cavity 511 of the guide rod 51. A first observation window 7 is installed on the auxiliary flow pipeline 2, and a second observation window 8 is installed on the guide rod 51.

[0035] Reference Figure 1 , Figure 2 and Figure 3The main flow pipe 1 serves as the connection device for refrigerant inlet and outlet, and is installed between refrigerant conveying equipment to undertake the main flow and conveying of refrigerant. When the refrigerant flows normally in the main flow pipe 1, the drive component 3 slides in the end of the auxiliary flow pipe 2, causing the detection block 52 in the auxiliary flow pipe 2 to slide back and forth along the guide rod 51. The detection block 52 drives the throttling component 4 to perform extension, retraction, opening and closing adjustment actions, thereby changing the effective cross-sectional area of ​​the main flow pipe 1, thereby regulating the flow rate of the refrigerant. The hollow cavity 511 inside the guide rod 51 is slidably equipped with an indicator block 512, which works in conjunction with the first observation window 7 on the outside of the auxiliary flow pipe 2. The first observation window 7 is used to observe the detection block. The movement position of the detection block 52 is used to determine the flow rate of the main flow pipe 1 by detecting the change in the movement position of the detection block 52; the guide rod 51 corresponds to the second observation window 8, which is used to observe the change in the position of the marker block 512 inside the guide rod 51, and observe the temperature change in the main flow pipe 1 by observing the change in the position of the marker block 512; at the same time, the distance sensor on the auxiliary flow pipe 2 collects the position data of the detection block 52 in real time; one end of the auxiliary flow pipe 2 is connected to the main flow pipe 1, and the other end of the auxiliary flow pipe 2 is embedded in the end of the main flow pipe 1, without interfering with the main flow of refrigerant. The throttling opening is adjusted by the internal structure of the auxiliary flow pipe 2 to achieve stable and visualized refrigerant flow.

[0036] Reference Figure 3 and Figure 4 The drive assembly 3 includes a drive block 31 and a limiting spring 32. The drive block 31 is slidably disposed inside one end of the auxiliary flow pipe 2. The limiting spring 32 is sleeved on the drive block 31, with one end of the limiting spring 32 fixedly disposed on the auxiliary flow pipe 2 and the other end fixedly disposed on the drive block 31. The drive block 31 is used to drive the detection block 52 to slide along the guide rod 51 and the auxiliary flow pipe 2. The refrigerant fluid pressure acts on the drive block 31, pushing the drive block 31 to slide inside the auxiliary flow pipe 2. The displacement of the drive block 31, through the pressure medium in the auxiliary flow pipe 2, drives the detection block 52 to slide back and forth along the guide rod 51. When the refrigerant pressure changes, the force on the drive block 31 changes accordingly, and the limiting spring 32 adaptively extends and retracts to reset, thereby driving the detection block 52 to move synchronously. Relying on the dynamic balance between the refrigerant pressure and the elastic force of the limiting spring 32, the position of the detection block 52 follows the real-time changes in the pipe flow and pressure, stably triggering the throttling assembly 4 to adjust the refrigerant flow cross-sectional area of ​​the main flow pipe 1, and completing the adaptive regulation of the refrigerant flow.

[0037] Reference Figure 3 and Figure 5The throttling assembly 4 includes a mounting bracket 41. A temperature mechanism 42 and a first liquid-filled expansion member 43 are respectively provided on both sides of the mounting bracket 41. The first liquid-filled expansion member 43 is fixedly mounted on the mounting bracket 41 and is connected to the other end of the auxiliary flow pipe 2. The temperature mechanism 42 includes a mounting housing 421 and a second liquid-filled expansion member 422. The mounting housing 421 is fixedly mounted on the mounting bracket 41. A mounting port 4211 is provided in the middle of one side of the mounting housing 421. An upper water inlet 4215 is provided at the upper part of one side of the mounting housing 421, and a lower water inlet 4216 is provided at the lower part of one side of the mounting housing 421. A water outlet 4212 is provided on the other side of the mounting housing 421. The second liquid-filled expansion member 422 is fixedly mounted on the mounting housing 421, and the mounting housing 421 is connected to the second liquid-filled expansion member 422 through the water outlet 4212. (The last sentence appears to be incomplete and possibly refers to a refrigerant.) When the refrigerant flows through the main flow pipe 1, the drive component 3 drives the detection block 52 to slide synchronously along the guide rod 51. The displacement of the detection block 52 compresses the pressure medium, causing the first liquid-filled expansion member 43 to expand and deform. After expansion, the first liquid-filled expansion member 43 gradually blocks and shrinks the cross-sectional area of ​​the main flow pipe 1, thereby adjusting the refrigerant flow rate in real time. The position of the detection block 52 is viewed through the first observation window 7 on the outside of the auxiliary flow pipe 2 to determine the current refrigerant flow rate. When the refrigerant flow rate exceeds the set threshold, the first liquid-filled expansion member 43 fully expands to block the main flow pipe 1 channel, restricting or even blocking the refrigerant flow and avoiding abnormal large-flow delivery. The refrigerant enters the installation housing 421 through the upper inlet 4215 and the lower inlet 4216, and then flows into the second liquid-filled expansion member 422 through the outlet 4212, causing the second liquid-filled expansion member 422 to expand and deform.

[0038] Reference Figure 3 and Figure 5The mounting housing 421 contains a baffle 423 and two sets of sliding rods 9. The sliding rods 9 are located on the other side of the mounting housing 421 and are fixedly connected to the mounting housing 421. The baffle 423 is slidably mounted on the sliding rods 9. The upper part of the baffle 423 has an upper interface 4231, and the lower part of the baffle 423 has a lower interface 4232. A top rod 4233 is provided on one side of the bottom of the baffle 423. A first spring 91 is sleeved on the upper part of the sliding rods 9. One end of the first spring 91 is fixedly mounted on the top of the mounting housing 421, and the other end of the first spring 91 abuts against the top of the baffle 423. When the baffle 423 slides upward along the sliding rods 9, the lower interface 4232 of the baffle 423 abuts against the mounting housing. When the outlet 4212 of the housing 421 is aligned and connected, the refrigerant inside the housing 421 flows into the second liquid-filled expansion member 422 through the lower interface 4232 and the outlet 4212, driving the second liquid-filled expansion member 422 to expand and deform. When the baffle 423 slides down along the sliding rod 9, the upper interface 4231 of the baffle 423 is aligned and connected with the outlet 4212, and the refrigerant enters the second liquid-filled expansion member 422 through the upper interface 4231 and the outlet 4212, which also triggers its expansion. The first spring 91 always provides elastic support for the baffle 423, and extends and retracts according to the force on the baffle 423, assisting the baffle 423 to reset or maintain its current sliding position, ensuring a stable connection with the outlet 4212.

[0039] Reference Figure 5 and Figure 6The mounting housing 421 contains a temperature sensing unit 424, which includes a temperature sensing tank 4241, a capillary tube 4242, a temperature sensing cylinder 4243, and a lifting block 4244. The temperature sensing tank 4241 is fixedly installed inside the mounting opening 4211. The temperature sensing cylinder 4243 is fixedly installed inside the mounting housing 421, with the temperature sensing tank 4241 located below the baffle 423. The lifting block 4244 is slidably installed inside the temperature sensing cylinder 4243, and abuts against the push rod 4233. One end of the capillary tube 4242 is connected to the temperature sensing tank 4241. The other end of the capillary tube 4242 is connected to the temperature-sensing cylinder 4243; the temperature-sensing tank 4241 is filled with a thermosensitive liquid, which drives the lifting block 4244 to slide along the inside of the temperature-sensing cylinder 4243 through temperature changes; when the refrigerant temperature changes, the thermosensitive liquid in the temperature-sensing tank 4241 synchronously senses the temperature change. If the temperature rises, the thermosensitive liquid expands in volume and flows into the temperature-sensing cylinder 4243 through the capillary tube 4242, pushing the lifting block 4244 to slide upward along the temperature-sensing cylinder 4243. The lifting block 4244 pushes the push rod 4233, which in turn drives the baffle 4 23 slides upward along the sliding rod 9; when the refrigerant temperature is too high and rises to the preset temperature, the baffle 423 slides to the lower interface 4232, which aligns with and connects with the outlet 4212 of the mounting housing 421. The refrigerant in the mounting housing 421 flows into the second liquid-filled expansion member 422 through the lower interface 4232 and the outlet 4212, driving the second liquid-filled expansion member 422 to expand and deform, thus blocking the refrigerant flow; if the refrigerant temperature in the pipeline decreases, the volume of the thermosensitive liquid in the temperature-sensing tank 4241 shrinks, and the liquid in the temperature-sensing cylinder 4243 flows through the capillary tube. The thin tube 4242 flows back to the temperature sensing tank 4241. The lifting block 4244 loses its thrust and slides downward under its own weight and the force of the baffle 423. The baffle 423 slides down along the sliding rod 9 under the elastic reset action of the first spring 91. When the refrigerant temperature is too low and drops to the preset temperature, the baffle 423 slides so that the upper interface 4231 of the baffle 423 is aligned and connected with the water outlet 4212. The refrigerant enters the second liquid-filled expansion member 422 through the upper interface 4231 and the water outlet 4212, which also triggers the expansion of the second liquid-filled expansion member 422 to block the refrigerant flow.

[0040] Reference Figure 3 and Figure 5A drive rod 4234 is provided on the other side of the bottom of the baffle 423. A drive port 4213 is provided at the bottom of the mounting housing 421. A piston block 4214 is slidably arranged in the drive port 4213. One end of the drive rod 4234 is fixed to the bottom of the baffle 423, and the other end of the drive rod 4234 is fixed to the piston block 4214. A guide tube 6 is provided between the drive port 4213 and the guide rod 51. One end of the guide tube 6 passes through the main flow pipe 1 and is connected to the drive port 4213. The other end of the guide tube 6 passes through the auxiliary flow pipe 2 and is connected to the hollow cavity 511 inside the guide rod 51. Sealing rings are provided at the connection between one end of the guide tube 6 and the main flow pipe 1, and at the connection between the other end of the guide tube 6 and the auxiliary flow pipe 2.

[0041] Reference Figure 3 , Figure 5 and Figure 6 The thermosensitive liquid inside the temperature-sensing tank 4241 senses temperature changes. If the temperature rises, the volume of the thermosensitive liquid expands and flows into the temperature-sensing cylinder 4243 through the capillary tube 4242. This pushes the lifting block 4244 to slide upward along the temperature-sensing cylinder 4243. The lifting block 4244 pushes the top rod 4233, causing the baffle 423 to slide upward along the sliding rod 9. At the same time, the upward sliding of the baffle 423 causes the drive rod 4234 to move upward synchronously. The drive rod 4234 pulls the piston block 4214 to slide upward along the drive port 4213, causing a pressure change in the pressure medium in the drive port 4213 and the connecting pipe 6. This pressure change is transmitted to the hollow cavity 511 of the guide rod 51 through the connecting pipe 6, causing the marker block 512 to slide along the guide rod 51.

[0042] If the temperature decreases, the volume of the thermosensitive liquid in the temperature-sensing tank 4241 shrinks, and the liquid in the temperature-sensing cylinder 4243 flows back to the temperature-sensing tank 4241 through the capillary tube 4242. The lifting block 4244 loses its thrust and slides downward under its own weight and the force of the baffle 423. The baffle 423 slides downward along the sliding rod 9 under the elastic reset action of the first spring 91. At the same time, the downward sliding of the baffle 423 drives the drive rod 4234 to move downward synchronously. The drive rod 4234 pushes the piston block 4214 to slide downward along the drive port 4213, squeezing the pressure medium in the drive port 4213 and the guide tube 6. The pressure is transmitted through the guide tube. The passage pipe 6 transmits to the hollow cavity 511 of the guide rod 51, pushing the marker block 512 to slide in the opposite direction along the guide rod 51; the sealing ring ensures the sealing performance of the passage pipe 6 and the connection of each pipe, preventing the leakage of pressure medium from affecting the normal operation of the marker block 512; through the first observation window 7 of the auxiliary flow pipe 2, the second observation window 8 on the guide rod 51 can be seen, and the sliding position of the marker block 512 can be observed through the second observation window 8, so as to intuitively judge the temperature change and temperature level of the refrigerant; at the same time, the position of the marker block 512 also indirectly reflects the sliding state of the baffle 423 and the working state of the second liquid filling expansion member 422.

[0043] The working principle of the online refrigerant thermal stability detection device in this application is as follows: the refrigerant is transported along the main flow pipeline 1. The refrigerant flow rate triggers the drive block 31 of the drive assembly 3, pushing the drive block 31 to slide within the auxiliary flow pipeline 2. Simultaneously, the limit spring 32 on the drive block 31 adaptively extends and retracts according to the change in refrigerant pressure. The sliding of the drive block 31, through the pressure medium within the auxiliary flow pipeline 2, drives the detection block 52 of the detection assembly 5 to slide back and forth along the guide rod 51. The displacement of the detection block 52 directly triggers the adjustment action of the throttling assembly 4. The detection block 52, through the pressure medium, causes the first liquid-filled expansion member 43 of the throttling assembly 4 to expand and deform. The expanded first liquid-filled expansion member... The component 43 gradually blocks and shrinks the internal flow cross-sectional area of ​​the main flow pipe 1, thereby regulating the flow rate of the refrigerant in the main flow pipe 1 and achieving dynamic flow adaptation. When the refrigerant flow rate in the main flow pipe 1 is too large, the displacement of the detection block 52 will trigger the first liquid-filled expansion component 43 to fully expand, blocking the main flow pipe 1 channel, restricting or even blocking the refrigerant flow, and avoiding damage to the system caused by abnormal large flow delivery. The distance sensor on the auxiliary flow pipe 2 will collect the axial position data of the detection block 52 in real time. By changing the position of the detection block 52, the pressure and flow conditions of the refrigerant inside the pipe are fed back, forming a closed-loop flow monitoring. At the same time, the detection can be directly observed through the first observation window 7 of the auxiliary flow pipe 2. The movement of block 52 allows for a direct assessment of the refrigerant flow rate in the current main flow pipe 1. During refrigerant transport in the main flow pipe 1, it flows into the mounting housing 421 through the upper inlet 4215 and lower inlet 4216 of the temperature mechanism 42 of the throttling component 4, and then flows into the second liquid-filled expansion component 422 through the outlet 4212 of the mounting housing 421. Simultaneously, the temperature sensing unit 424 inside the mounting housing 421 senses real-time changes in refrigerant temperature. The temperature sensing tank 4241 of the temperature sensing unit 424 contains a thermosensitive liquid. When the refrigerant temperature changes, the thermosensitive liquid senses the change and generates a volume change. When the temperature rises, the thermosensitive liquid expands and flows into the temperature sensing unit through the capillary tube 4242. The cylinder 4243 pushes the lifting block 4244 inside the temperature sensing cylinder 4243 to slide upward; the lifting block 4244 pushes the top rod 4233 at the bottom of the baffle 423, causing the baffle 423 to slide upward along the sliding rod 9 inside the mounting housing 421; at this time, the lower interface 4232 at the bottom of the baffle 423 is aligned and connected with the outlet 4212 of the mounting housing 421, and the refrigerant in the mounting housing 421 flows into the second liquid-filled expansion member 422 through the lower interface 4232 and the outlet 4212, driving the second liquid-filled expansion member 422 to expand and deform; if the temperature rises to the preset threshold, the second liquid-filled expansion member 422 will fully expand, blocking the refrigerant flow in the main flow pipe 1, and avoiding abnormal delivery of high-temperature refrigerant;When the temperature decreases, the volume of the heat-sensitive liquid shrinks, and the liquid in the temperature-sensing cylinder 4243 flows back to the temperature-sensing tank 4241 through the capillary tube 4242. The lifting block 4244 loses its thrust and slides downward under its own weight and the force of the baffle 423. Under the elastic reset action of the first spring 91, the baffle 423 slides downward along the sliding rod 9. At this time, the upper interface 4231 of the baffle 423 is aligned and connected with the outlet 4212 of the mounting housing 421, and the refrigerant flows through the upper interface 4231 and the outlet... The water inlet 4212 enters the second liquid-filled expansion member 422, triggering its expansion deformation. If the temperature drops to a preset threshold, the second liquid-filled expansion member 422 expands to block the refrigerant flow, preventing the low-temperature refrigerant from affecting the normal operation of the system. The sliding action of the baffle 423 will synchronously drive the drive rod 4234 at its bottom to move, and at the same time drive the piston block 4214 to slide up and down along the drive port 4213. When the baffle 423 slides upward, the drive rod 4234 pulls the piston block 4214 to slide upward, causing the drive... The pressure medium in port 4213 and the connecting pipe 6 undergoes a pressure change; when baffle 423 slides downward, drive rod 4234 pushes piston block 4214 downward, squeezing the pressure medium in drive port 4213 and connecting pipe 6; connecting pipe 6 connects drive port 4213 to the hollow cavity 511 of guide rod 51, and the sealing rings at both ends ensure sealing performance to prevent pressure medium leakage; the pressure change of the pressure medium is transmitted to the hollow cavity 511 of guide rod 51 through connecting pipe 6, pushing the marker block 512 in the cavity to slide along guide rod 51; through the first observation window 7 of auxiliary flow pipe 2, the second observation window 8 on guide rod 51 can be seen, and the sliding position of marker block 512 can be observed through the second observation window 8, so that the temperature change and temperature level of the refrigerant can be intuitively judged; at the same time, the position of marker block 512 can also indirectly reflect the sliding state of baffle 423 and the working state of second liquid filling expansion component 422, realizing the visualization of temperature monitoring and indirect feedback of component working status.

[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An online refrigerant thermal stability testing device, characterized in that: It includes a main flow pipe (1) and an auxiliary flow pipe (2); one end of the auxiliary flow pipe (2) is disposed at one end of the main flow pipe (1), and the other end of the auxiliary flow pipe (2) is connected to the main flow pipe (1); a driving component (3) is slidably disposed inside one end of the auxiliary flow pipe (2); the other end of the auxiliary flow pipe (2) passes through the other end of the main flow pipe (1), and a throttling component (4) is disposed on the other end of the auxiliary flow pipe (2); the auxiliary flow... A detection component (5) is slidably disposed inside the auxiliary flow pipeline (2); the detection component (5) includes a guide rod (51) and a detection block (52). The two ends of the guide rod (51) are respectively fixedly disposed inside the auxiliary flow pipeline (2). The detection block (52) is slidably connected to the guide rod (51) and the auxiliary flow pipeline (2). A distance sensor is disposed on the auxiliary flow pipeline (2). The distance sensor is used to detect the position of the detection block (52) inside the auxiliary flow pipeline (2).

2. The online refrigerant thermal stability testing device according to claim 1, characterized in that: The driving assembly (3) includes a driving block (31) and a limiting spring (32); the driving block (31) is slidably disposed inside one end of the auxiliary flow pipeline (2); the limiting spring (32) is sleeved on the driving block (31), one end of the limiting spring (32) is fixedly disposed on the auxiliary flow pipeline (2), and the other end of the limiting spring (32) is fixedly disposed on the driving block (31); the driving block (31) is used to drive the detection block (52) to slide along the guide rod (51) and the auxiliary flow pipeline (2).

3. The online refrigerant thermal stability testing device according to claim 1, characterized in that: The throttling component (4) includes a mounting bracket (41), and a temperature mechanism (42) and a first liquid-filled expansion member (43) are respectively provided on both sides of the mounting bracket (41). The first liquid-filled expansion member (43) is fixedly mounted on the mounting bracket (41) and is connected to the other end of the auxiliary flow pipeline (2).

4. The online refrigerant thermal stability testing device according to claim 3, characterized in that: The temperature mechanism (42) includes a mounting housing (421) and a second liquid-filled expansion member (422); the mounting housing (421) is fixedly mounted on the mounting frame (41), a mounting port (4211) is provided in the middle of one side of the mounting housing (421), an upper water inlet (4215) is provided in the upper part of one side of the mounting housing (421), and a lower water inlet (4216) is provided in the lower part of one side of the mounting housing (421); a water outlet (4212) is provided on the other side of the mounting housing (421), and the second liquid-filled expansion member (422) is fixedly mounted on the mounting housing (421), and the mounting housing (421) is connected to the second liquid-filled expansion member (422) through the water outlet (4212).

5. The online refrigerant thermal stability testing device according to claim 4, characterized in that: The mounting housing (421) is provided with a baffle (423) and two sets of sliding rods (9) inside. The sliding rods (9) are located on the other side of the mounting housing (421) and are fixedly connected to the mounting housing (421). The baffle (423) is slidably disposed on the sliding rods (9). The upper part of the baffle (423) is provided with an upper interface (4231) and the lower part of the baffle (423) is provided with a lower interface (4232). A top rod (4233) is provided on one side of the bottom of the baffle (423). A first spring (91) is sleeved on the upper part of the sliding rod (9). One end of the first spring (91) is fixedly disposed on the top of the mounting housing (421), and the other end of the first spring (91) abuts against the top of the baffle (423).

6. The online refrigerant thermal stability testing device according to claim 5, characterized in that: The mounting housing (421) is equipped with a temperature sensing unit (424), which includes a temperature sensing tank (4241), a capillary tube (4242), a temperature sensing cylinder (4243), and a lifting block (4244). The temperature sensing tank (4241) is fixedly installed inside the mounting port (4211). The temperature sensing cylinder (4243) is fixedly installed inside the mounting housing (421). The temperature sensing tank (4241) is located below the baffle (423). The lifting block (4244) is located inside the mounting housing (4211). 244) The lifting block (4244) is slidably disposed inside the temperature-sensing cylinder (4243), and the lifting block (4244) abuts against the top rod (4233); one end of the capillary tube (4242) is connected to the temperature-sensing tank (4241), and the other end of the capillary tube (4242) is connected to the temperature-sensing cylinder (4243); the temperature-sensing tank (4241) is provided with a thermosensitive liquid, and the thermosensitive liquid drives the lifting block (4244) to slide along the inside of the temperature-sensing cylinder (4243) by temperature change.

7. The online refrigerant thermal stability testing device according to claim 5, characterized in that: The guide rod (51) has a hollow cavity (511) inside, and an identifier block (512) is slidably disposed inside the hollow cavity (511) of the guide rod (51).

8. The online refrigerant thermal stability testing device according to claim 7, characterized in that: A drive rod (4234) is provided on the other side of the bottom of the baffle (423). A drive port (4213) is provided at the bottom of the mounting housing (421). A piston block (4214) is slidably provided in the drive port (4213). One end of the drive rod (4234) is fixed to the bottom of the baffle (423), and the other end of the drive rod (4234) is fixed to the piston block (4214). A guide tube (6) is provided between the drive port (4213) and the guide rod (51). One end of the guide tube (6) passes through the main flow pipe (1) and is connected to the drive port (4213). The other end of the guide tube (6) passes through the auxiliary flow pipe (2) and is connected to the hollow cavity (511) inside the guide rod (51).

9. The online refrigerant thermal stability testing device according to claim 8, characterized in that: A sealing ring is provided at the connection point between one end of the guide pipe (6) and the main flow pipe (1) and at the connection point between the other end of the guide pipe (6) and the auxiliary flow pipe (2).

10. The online refrigerant thermal stability testing device according to claim 1, characterized in that: The auxiliary flow pipeline (2) is provided with a first observation window (7), and the guide rod (51) is provided with a second observation window (8).

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