Temperature sensing spool and drain valve

Abstract

This application discloses a temperature-sensitive valve core and a steam trap. The temperature-sensitive valve core includes a temperature-sensitive sleeve, a valve seat, a valve disc, a bellows, and an electromagnetic drive mechanism. A medium channel is formed inside the temperature-sensitive sleeve. The valve seat is located at one end of the temperature-sensitive sleeve and has a steam trap that communicates with the medium channel. The valve disc is used to open or close the steam trap. The bellows can extend or retract along the axial direction of the temperature-sensitive sleeve in response to changes in the medium temperature to drive the valve disc to move. The valve seat includes a fixed section and a floating section. The fixed section is fixed and sealed to the temperature-sensitive sleeve. The floating section includes a flexible sleeve structure and a rigid support structure. The steam trap is at least partially formed in the floating section. The electromagnetic drive mechanism is sleeved on the outside of the temperature-sensitive sleeve and is driven by the floating section. It can drive the floating section to move closer to or further away from the valve disc according to the amount of condensate in the medium channel, so as to adaptively adjust the distance between the steam trap and the valve disc. This structure can balance condensate drainage efficiency and steam sealing reliability.

Description

Technical Field

[0001] This application relates to the field of steam trap technology, and more particularly to a temperature-sensitive valve core and a steam trap. Background Technology

[0002] Steam traps are automatic drainage devices widely used in steam pipelines, heat exchange equipment, heating systems, and related thermal devices. Their main function is to promptly discharge condensate, air, and other non-condensable gases formed in the steam system while minimizing steam leakage, thus ensuring the heat exchange efficiency and operational stability of the steam system. Depending on their opening and closing principles, steam traps are typically classified into mechanical, thermostatic, and thermodynamic types. Among them, temperature-sensitive steam traps, which utilize temperature changes to drive the expansion and contraction of a bellows to control the opening and closing of the drain orifice, have a certain application base in steam condensate drainage scenarios due to their relatively simple structure and intuitive action response.

[0003] Existing temperature-sensitive steam traps typically have a bellows and a valve disc connected to it installed in the sleeve or valve body. The valve disc is arranged opposite to the condensate drain hole on the valve seat. When high-temperature steam enters the valve body, the bellows expands due to heat and pushes the valve disc towards the condensate drain hole, causing the valve disc to contact the inner wall or end face of the drain hole, thereby sealing the drain hole and reducing steam leakage. When the steam temperature drops and condensate forms, the bellows contracts due to the lower temperature, causing the valve disc to move away from the condensate drain hole, and the condensate is discharged from the drain hole to the outlet chamber. This type of structure mainly relies on the bellows' sensing of the medium temperature to complete the opening and closing action. The initial distance or opening gap between the valve disc and the condensate drain hole is usually preset through assembly dimensions, adjusting components, or fixing structures.

[0004] However, in actual operation, steam temperature, condensate generation, and temperature drop rate are often not constant. For structures that rely on bellows expansion and contraction for opening and closing, the distance between the valve disc and the drain hole simultaneously affects both the steam sealing effect and the condensate discharge capacity. If this distance is set too small to ensure that the valve disc can reliably press the drain hole when high-temperature steam arrives, the flow gap formed between the valve disc and the drain hole will be small after the bellows contracts to open the drain hole. This restricts the condensate discharge flow rate and velocity, making it easy for the condensate in the casing to not be discharged in time before the next high-temperature steam arrives, thus affecting the condensate drainage efficiency and the subsequent steam transport status.

[0005] Conversely, if the distance between the valve disc and the condensate drain hole is set too large in the contracted state of the bellows to increase the condensate drainage rate, then when high-temperature steam arrives, although the bellows can be heated and expand, pushing the valve disc towards the condensate drain hole, its expansion stroke may not be sufficient to form a sufficient and stable sealing contact between the valve disc and the condensate drain hole, thus causing steam leakage from the condensate drain hole. In other words, the distance between the valve disc and the condensate drain hole in existing structures is mostly preset or statically adjustable, making it difficult to dynamically adapt to the real-time condensate generation and flow state, resulting in a trade-off between drainage efficiency and steam sealing reliability.

[0006] Therefore, there is an urgent need for a steam trap structure that can adaptively adjust the distance between the drain hole and the valve disc according to the generation and flow of condensate while maintaining the temperature-sensitive opening and closing function. This would increase the effective drainage capacity during the condensate discharge stage and ensure reliable contact between the valve disc and the drain hole during the steam blockage stage, thereby improving the problem that existing temperature-sensitive steam traps cannot simultaneously meet the requirements of drainage speed and sealing effect under different operating conditions. Summary of the Invention

[0007] This application provides a temperature-sensitive valve core and a steam trap to improve the problem that the distance between the valve disc and the steam trap hole in the existing temperature-sensitive steam trap structure is difficult to adaptively adjust according to the amount of condensate, which makes it difficult to balance the reliability of steam sealing and the efficiency of condensate discharge.

[0008] According to an embodiment of this application, the temperature-sensitive valve core includes a temperature-sensitive sleeve, a valve seat, a valve disc, a bellows, and an electromagnetic drive mechanism. A medium channel is formed within the temperature-sensitive sleeve. The valve seat is located at one end of the temperature-sensitive sleeve and has a drainage hole communicating with the medium channel. The valve disc is located within the temperature-sensitive sleeve and is used to open or close the drainage hole. The bellows is located within the temperature-sensitive sleeve and can extend or retract axially along the temperature-sensitive sleeve in response to changes in medium temperature, thereby driving the valve disc to move relative to the drainage hole. The valve seat includes a fixed section and a floating section. The fixed section is fixedly and sealed to the temperature-sensitive sleeve. The floating section includes a flexible sleeve structure and a rigid support structure located near the valve disc end of the flexible sleeve structure. The drainage hole is at least partially formed in the floating section. The electromagnetic drive mechanism is sleeved on the outside of the temperature-sensitive sleeve and located at an axial position corresponding to the floating section. The electromagnetic drive mechanism is drively connected to the floating section and can drive the floating section to move closer to or further away from the valve disc axially along the temperature-sensitive sleeve according to the amount of condensate in the medium channel, thereby adaptively adjusting the distance between the drainage hole and the valve disc.

[0009] According to an embodiment of this application, the electromagnetic drive mechanism is a ring-shaped electromagnetic drive mechanism, which surrounds the temperature sensing sleeve. By adopting a ring-shaped arrangement, the electromagnetic drive mechanism can form a relatively uniform driving effect on the outside of the temperature sensing sleeve, and it is beneficial to reduce the radial off-center load on the temperature sensing valve core, so that the floating section can move stably along the axial direction of the temperature sensing sleeve.

[0010] According to an embodiment of this application, the annular electromagnetic drive mechanism includes an annular housing and an electromagnetic coil disposed within the annular housing. The annular housing provides installation and protection space for the electromagnetic coil. When energized, the electromagnetic coil generates an electromagnetic force to drive the movement of the floating section, thereby allowing the electromagnetic drive mechanism to be arranged in a more compact structure on the outside of the temperature sensing sleeve.

[0011] According to an embodiment of this application, the temperature-sensing valve core further includes a connector, which is connected between the electromagnetic drive mechanism and the floating section. The electromagnetic drive mechanism drives the floating section to move axially along the temperature-sensing sleeve via the connector. By providing the connector, the driving force generated by the electromagnetic drive mechanism can be transmitted to the floating section, causing the floating section to produce a controllable axial displacement relative to the fixed section.

[0012] According to an embodiment of this application, the connector passes through the wall of the temperature-sensing sleeve and is connected to the rigid support structure. Thus, the electromagnetic drive mechanism located on the outside of the temperature-sensing sleeve can form a transmission connection with the rigid support structure inside the temperature-sensing sleeve through the connector passing through the wall, thereby achieving axial drive of the floating section without changing the basic arrangement of the bellows and valve disc.

[0013] According to an embodiment of this application, the temperature sensing sleeve is provided with a guide hole extending along the axial direction of the temperature sensing sleeve. The connector passes through the guide hole and can move along the guide hole. The guide hole can restrict the movement direction of the connector, so that the connector moves along a predetermined axial path under the action of the electromagnetic drive mechanism, thereby improving the guiding accuracy and operational stability during the movement of the floating section.

[0014] According to an embodiment of this application, a fixed section is disposed on the side of the floating section away from the valve disc. The fixed section has a fixed drainage channel communicating with the condensate drain hole, which is used to discharge the condensate flowing out of the condensate drain hole to the temperature-sensitive valve core. Through this structure, the condensate flowing out through the gap between the valve disc and the condensate drain hole can continue to be discharged through the fixed drainage channel, so that the floating section can still form a continuous drainage path with the fixed section when axial movement occurs.

[0015] According to an embodiment of this application, one end of the flexible sleeve structure is connected to a fixed section, and the other end is connected to a rigid support structure, so that the rigid support structure can move relative to the fixed section along the axial direction of the temperature-sensing sleeve. The flexible sleeve structure provides axial movement allowance for the rigid support structure while the fixed section remains in a fixed installation state, thereby enabling dynamic adjustment of the position of the drainage hole.

[0016] According to an embodiment of this application, the rigid support structure has a sealing port for engaging with the valve disc, and the sealing port constitutes a drainage hole near the end of the valve disc. By forming a sealing port on the rigid support structure, the valve disc can form a stable contact with the rigid support structure when the drainage hole is closed, thereby improving the structural strength and sealing reliability of the drainage hole inlet end.

[0017] According to an embodiment of this application, the valve disc has a conical sealing surface, which is used to contact the inner wall of the sealing port to close the drainage hole. The conical sealing surface can form a guiding fit and line contact or surface contact seal when the valve disc approaches the sealing port, which is beneficial to improving the sealing effect of the valve disc on the drainage hole and reducing the possibility of insufficient sealing due to slight deviation between the valve disc and the sealing port.

[0018] According to an embodiment of this application, the temperature-sensing valve core further includes an elastic deformation mechanism. The elastic deformation mechanism is connected to the rigid support structure and is used to provide a reset force or a buffer force to the floating section. The elastic deformation mechanism can provide a reset function after the floating section is driven to move by the electromagnetic drive mechanism, and at the same time can absorb the impact or vibration during the movement of the floating section, thereby improving the smoothness of the floating section position adjustment.

[0019] According to an embodiment of this application, the elastic deformation mechanism is sleeved on the outside of the flexible sleeve structure. By arranging the elastic deformation mechanism on the outside of the flexible sleeve structure, the axial movement direction of the elastic deformation mechanism can be matched with that of the floating section, and it is beneficial to form a compact reset and buffer structure within a limited space.

[0020] According to an embodiment of this application, the elastic deformation mechanism includes a spring, one end of which is connected to or abuts against a rigid support structure, and the other end is connected to or abuts against a fixed section or a temperature-sensing sleeve. The spring can generate elastic deformation when the rigid support structure moves axially, and assists the floating section in resetting or maintaining a predetermined position through elastic restoring force, thereby improving the controllability of the axial adjustment process of the floating section.

[0021] According to an embodiment of this application, the temperature-sensing valve core further includes a condensate branch channel, which is disposed on the outside of the flexible sleeve structure and is used to receive condensate when the amount of condensate in the medium channel reaches a predetermined state. By providing the condensate branch channel, changes in the amount of condensate in the medium channel can be incorporated into the detection or control path, providing a basis for the electromagnetic drive mechanism to adjust the position of the floating section according to the amount of condensate.

[0022] According to an embodiment of this application, the condensate branch channel has a branch inlet, which is located at or near the rigid support structure. By placing the branch inlet close to the rigid support structure, the condensate accumulation near the drain hole can be more directly reflected, making the amount of condensate entering the condensate branch channel more correlated with the actual drainage needs near the valve disc and drain hole.

[0023] According to an embodiment of this application, the condensate branch channel is connected to or cooperates with the detection unit. The detection unit is used to detect the amount of condensate entering the condensate branch channel and generate an electrical signal for controlling the electromagnetic drive mechanism based on the amount of condensate. Thus, the amount of condensate can be converted into an electrical control signal, enabling the electromagnetic drive mechanism to perform corresponding driving actions based on the actual amount of condensate.

[0024] According to an embodiment of this application, the magnitude of the electrical signal is positively correlated with the amount of condensate entering the condensate branch channel, so that the electromagnetic drive mechanism generates a driving force corresponding to the amount of condensate. Through the above control relationship, when the amount of condensate increases, the electromagnetic drive mechanism can output a larger driving force, thereby enhancing the matching between the floating section position adjustment and the condensate discharge demand.

[0025] According to the embodiments of this application, the amount of movement of the floating section along the axial direction of the temperature-sensing sleeve changes in correspondence with the magnitude of the driving force of the electromagnetic drive mechanism. Therefore, the displacement of the floating section can change with the electromagnetic drive force, thereby achieving continuous or graded adjustment of the distance between the drain hole and the valve disc, improving the adaptability of the temperature-sensing valve core to different condensate water conditions.

[0026] According to embodiments of this application, the detection unit includes at least one of a liquid level sensor, a conductivity detection unit, a pressure sensor, a flow sensor, or a float detection unit. By employing one or more of the above detection units, condensate volume information can be obtained from different perspectives such as liquid level, conductivity, pressure, flow rate, or buoyancy state, thereby improving the adaptability and implementation flexibility of the condensate volume detection method.

[0027] According to an embodiment of this application, the electromagnetic drive mechanism is configured to: maintain the floating section in a first position when the condensate volume in the medium channel is less than a predetermined threshold; and drive the floating section to move to a second position when the condensate volume in the medium channel is greater than or equal to the predetermined threshold. By setting the first and second positions, the floating section position can be switched according to whether the condensate volume reaches the predetermined threshold, so that the temperature-sensing valve core has different valve disc and drainage hole engagement states under low and high condensate volume conditions.

[0028] According to an embodiment of this application, when the floating section is in the first position, there is a first gap between the valve disc and the drain hole; when the floating section is in the second position, there is a second gap between the valve disc and the drain hole, and the second gap is different from the first gap. By making different gaps correspond to different positions, the temperature-sensitive valve core can change the drainage gap or the closing stroke according to the change in condensate volume, thereby improving the responsiveness to changes in operating conditions.

[0029] According to an embodiment of this application, the second gap is greater than the first gap, so as to increase the drainage gap between the valve disc and the drain hole when the condensate volume increases. With this setting, when a large amount of condensate accumulates, the floating section can move to a position that increases the drainage gap, thereby increasing the flow rate and velocity of condensate discharged through the drain hole and reducing the retention of condensate in the temperature sensing sleeve.

[0030] According to an embodiment of this application, the second spacing is smaller than the first spacing to reduce the closing stroke between the valve disc and the drain hole when improved sealing reliability is required. With this arrangement, when enhanced steam sealing is needed, the floating section can move closer to the valve disc, reducing the closing stroke required when the bellows drives the valve disc. This facilitates more thorough contact between the valve disc and the drain hole and reduces the risk of steam leakage.

[0031] According to an embodiment of this application, the electromagnetic drive mechanism is electrically connected to the controller, which controls the driving direction and driving amount of the electromagnetic drive mechanism based on the condensate flow signal. By setting the controller, the electromagnetic drive mechanism can be actively controlled according to the detected condensate flow signal, so that the floating section can move closer to or further away from the valve disc according to a preset control logic, and achieve different driving outputs.

[0032] According to an embodiment of this application, the controller is configured to generate a voltage or current signal of corresponding magnitude based on the condensate flow rate signal, so as to control the electromagnetic drive mechanism to output a corresponding axial driving force. Thus, the condensate flow rate signal can be converted into a voltage or current signal executable by the electromagnetic drive mechanism, establishing a correspondence between the axial driving force and the change in condensate flow rate, thereby improving the accuracy of the floating section displacement control.

[0033] According to the embodiments of this application, the floating section, valve disc, and bellows are arranged coaxially or substantially coaxially. This coaxial or substantially coaxial arrangement reduces the eccentricity of the valve disc during its movement relative to the drainage hole, improves the fit accuracy between the valve disc and the sealing port, and enhances the stability of the temperature-sensing valve core's opening and closing action.

[0034] According to an embodiment of this application, the temperature-sensing valve core further includes a positioning tube, with a bellows disposed within the positioning tube. The positioning tube is used to limit the radial displacement of the bellows and / or the valve disc. The positioning tube can provide radial restraint for the bellows and the valve disc, making the bellows' extension and contraction direction more stable and reducing the risk of valve disc misalignment leading to poor sealing or accelerated wear.

[0035] According to an embodiment of this application, the bellows is a sealed bellows, and the sealed bellows is filled with a temperature-sensitive medium that can expand and contract in response to temperature changes. By using a sealed bellows filled with a temperature-sensitive medium, the expansion and contraction characteristics of the temperature-sensitive medium can be used to drive the bellows to expand and contract, thereby enabling the valve disc to automatically open or close the drain hole according to the temperature change of the medium.

[0036] According to an embodiment of this application, when the floating section moves under the drive of the electromagnetic drive mechanism, the flexible sleeve structure undergoes elastic deformation to maintain the connection between the floating section and the fixed section in the drainage channel. Thus, while the axial position of the floating section changes, it still maintains communication with the fixed section through the flexible sleeve structure, ensuring that condensate can be continuously discharged through the drainage holes and the fixed drainage channel.

[0037] This application also provides a steam trap, which includes a valve body and any of the aforementioned temperature-sensitive valve cores, the temperature-sensitive valve core being disposed within the valve body. By incorporating the temperature-sensitive valve core into the steam trap, the steam trap can maintain its temperature-sensitive opening and closing function while adjusting the distance between the valve disc and the drainage hole according to the amount of condensate, thereby improving the drainage efficiency and sealing reliability of the steam trap.

[0038] According to an embodiment of this application, the valve body has an inlet and an outlet, a temperature-sensing valve core is disposed between the inlet and the outlet, and a drain hole is used to connect or disconnect the medium flow path between the inlet and the outlet. With this arrangement, when the valve disc opens the drain hole, the medium flow path between the inlet and the outlet can be connected to discharge condensate; when the valve disc closes the drain hole, the medium flow path between the inlet and the outlet can be disconnected or restricted to reduce steam leakage.

[0039] According to an embodiment of this application, a spherical chamber is formed within the valve body, and the temperature-sensing valve core communicates with the spherical chamber so that condensate discharged through the temperature-sensing valve core enters the spherical chamber. The spherical chamber can provide a collection or buffer space for the condensate discharged through the temperature-sensing valve core, which helps to reduce local impacts during the condensate discharge process and improve the flow state of the medium inside the valve body.

[0040] According to an embodiment of this application, the steam trap further includes a filter, which is disposed in the medium flow path between the inlet and the temperature-sensing valve core. The filter can intercept impurities before the medium enters the temperature-sensing valve core, reducing the possibility of impurities entering the drain hole, valve disc mating area, or condensate branch channel, thereby reducing the risk of blockage, wear, or detection inaccuracy, and improving the long-term operational reliability of the steam trap.

[0041] The temperature-sensing valve core and steam trap provided in this application feature a valve seat with a split structure comprising a fixed section and a floating section. The fixed section is fixed and sealed to the temperature-sensing sleeve, while the floating section forms a steam trap mating part with a condensate hole that can move axially along the temperature-sensing sleeve through a flexible sleeve structure and a rigid support structure. Simultaneously, an electromagnetic drive mechanism is installed on the outer side of the temperature-sensing sleeve at an axial position corresponding to the floating section. This electromagnetic drive mechanism can drive the floating section closer to or further away from the valve disc according to the amount of condensate in the medium channel. Therefore, the distance between the steam trap and the valve disc is no longer determined solely by assembly dimensions or manual adjustment, but can adaptively change with variations in the amount of condensate. Adjustments should be made. Therefore, when the condensate volume is large and the drainage capacity needs to be increased, the drainage gap between the valve disc and the drain hole can be increased by driving the floating section to move, thereby increasing the real-time flow rate and velocity of condensate discharged through the drain hole and reducing the situation where condensate remains in the temperature sensing sleeve and is not discharged in time before the next high-temperature steam arrives. When it is necessary to improve the reliability of steam sealing, the closing stroke between the valve disc and the drain hole can also be reduced by driving the floating section to move, so that the bellows can more reliably push the valve disc to contact the drain hole or sealing port after being heated and extended, reducing the risk of steam leakage due to insufficient bellows extension stroke. Meanwhile, the annular electromagnetic drive mechanism is arranged around the temperature sensing sleeve and is driven by the rigid support structure through connectors and guide holes, which helps to improve the smoothness and guiding accuracy of the axial movement of the floating section. The rigid support structure, sealing port, and conical sealing surface of the valve disc can improve the contact stability and sealing reliability when the valve disc closes the drain hole. The elastic deformation mechanism can provide the floating section with the reset force or buffer force, reducing the impact of the floating section movement. The condensate branch channel, detection unit, and controller can convert the change of condensate volume into electrical, voltage, or current signals to control the electromagnetic drive mechanism, so that the movement direction and amount of the floating section are matched with the condensate volume. In the whole steam trap, the filter can reduce the possibility of impurities entering the temperature sensing valve core and causing blockage or wear, and the spherical chamber can provide a collection or buffer space for the discharged condensate, thereby improving the overall drainage efficiency, sealing reliability, and long-term operational stability of the steam trap under different steam temperatures and condensate generation conditions.

[0042] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0043] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 This is an overall schematic diagram of a steam trap according to an embodiment of this application.

[0044] Figure 2 This is a cross-sectional schematic diagram of the temperature-sensing valve core of the steam trap according to an embodiment of this application.

[0045] Explanation of reference numerals in the attached drawings: 1. Spherical chamber; 2. Valve body; 3. Filter; 4. Temperature-sensitive valve core; 21. Inlet; 22. Outlet; 23. Water inlet chamber; 24. Water outlet chamber; 41. Temperature-sensitive sleeve; 411. Medium channel; 42. Valve seat; 421. Drainage hole; 422. Fixed section; 423. Floating section; 424. Flexible sleeve structure; 425. Rigid support structure; 426. Fixed drainage channel; 43. Bellows; 44. Valve disc; 45. Electromagnetic drive mechanism; 47. Positioning tube; 471. Opening; 48. Elastic deformation mechanism; 49. Condensate branch channel. Detailed Implementation

[0046] 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 them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0047] In the description of this application, it should be understood that the terms "axial," "radial," "closer," "farthest," "one end," "the other end," "inner," and "outer," indicating orientation or positional relationships, may be based on the orientation or positional relationships shown in the accompanying drawings, or on the orientation or positional relationships of the relevant structures in actual use. These terms are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the relevant devices or components must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this application. In the description of this application, "connection" can include fixed connections, detachable connections, transmission connections, abutment connections, sealing connections, or integral molding, unless otherwise expressly defined. Terms such as "first" and "second" are only used to distinguish different states, positions, or structures and do not indicate quantity, order, or importance.

[0048] like Figure 1As shown in the figure, this application embodiment provides a steam trap, which includes a valve body 2 and a temperature-sensitive valve core 4 disposed within the valve body 2. The valve body 2 has an inlet 21 and an outlet 22. The inlet 21 is used to allow steam, condensate, or a mixture of steam and condensate to enter the valve body 2, and the outlet 22 is used to allow condensate treated by the steam trap to be discharged. The temperature-sensitive valve core 4 is disposed on the medium flow path between the inlet 21 and the outlet 22, so as to control the connection or disconnection of the medium flow path between the inlet 21 and the outlet 22.

[0049] like Figure 1 As shown, a spherical chamber 1 is formed inside the valve body 2. The spherical chamber 1 is used to contain the condensate discharged from the temperature-sensing valve core 4. By setting the spherical chamber 1, a temporary storage, collection or buffer space can be provided for the condensate discharged through the temperature-sensing valve core 4, so that the condensate has a relatively stable flow state in the valve body 2, and the flow disturbance caused by the condensate directly impacting the outlet 22 or the water outlet chamber 24 at high speed is reduced.

[0050] The valve body 2 also contains an inlet chamber 23 and an outlet chamber 24. The inlet chamber 23 is connected to the opening 471 on the positioning tube 47 of the temperature-sensing valve core 4, allowing steam, condensate, or a mixture of steam and condensate after passing through the filter 3 to enter the positioning tube 47 through the inlet chamber 23 and further into the temperature-sensing valve core 4. The outlet chamber 24 is connected to the spherical chamber 1. When a certain amount of condensate accumulates in the spherical chamber 1 and the condensate level exceeds the inlet of the outlet chamber 24, the condensate can enter the outlet chamber 24 and be discharged through the outlet 22.

[0051] like Figure 1 As shown, the steam trap also includes a filter 3, which is positioned in the media flow path between the inlet 21 and the temperature-sensing valve core 4. The filter 3 is used to filter the steam, condensate, or a mixture of steam and condensate entering from the inlet 21, reducing the entry of rust, welding slag, scale, or other solid impurities into the temperature-sensing valve core 4. By installing the filter 3, the possibility of impurities adhering to the mating position of the valve disc 44 and the steam trap 421 can be reduced, as can the risk of impurities entering the condensate branch channel 49, the detection unit, the guide hole, or the vicinity of the connector, causing blockage, jamming, or inaccurate detection can also be reduced. The filter 3 can be a mesh filter, a cylindrical filter element, an inclined filter structure, or other filter structures capable of intercepting solid impurities, and can be detachably connected to the valve body 2 for easy maintenance, cleaning, or replacement.

[0052] Combination Figure 1 and Figure 2As shown, after the medium enters the valve body 2 through inlet 21, it is first filtered by filter 3 and then enters the inlet chamber 23. Subsequently, the medium enters the temperature-sensitive valve core 4 through the opening 471 on the positioning tube 47, and under the control of the temperature-sensitive valve core 4, it is selectively discharged into the spherical chamber 1 through the drain hole 421. After the condensate level in the spherical chamber 1 rises to the inlet of the outlet chamber 24, it is discharged from the valve body 2 through the outlet chamber 24 and the outlet 22. Thus, the steam trap can collect, buffer, and discharge condensate while reducing steam leakage.

[0053] like Figure 2 As shown, the temperature-sensitive valve core 4 includes a temperature-sensitive sleeve 41, a valve seat 42, a bellows 43, a valve disc 44, and an electromagnetic drive mechanism 45. A medium channel 411 is formed within the temperature-sensitive sleeve 41, which is used to supply steam, condensate, or a mixture of steam and condensate to the temperature-sensitive valve core 4. The valve seat 42 is located at one end of the temperature-sensitive sleeve 41 and has a drain hole 421 communicating with the medium channel 411. The valve disc 44 is located within the temperature-sensitive sleeve 41 and is arranged opposite to the drain hole 421. The valve disc 44 can move relative to the drain hole 421 to open or close the drain hole 421. When the valve disc 44 leaves the drain hole 421, condensate in the medium channel 411 can be discharged through the drain hole 421; when the valve disc 44 engages with the drain hole 421, the drain hole 421 is closed or at least its flow is restricted, thereby reducing steam leakage.

[0054] like Figure 2 As shown, the bellows 43 is disposed inside the temperature-sensing sleeve 41. The bellows 43 can extend and retract along the axial direction of the temperature-sensing sleeve 41 in response to changes in the medium temperature, thereby driving the valve disc 44 to move relative to the drain hole 421. Specifically, when the medium entering the temperature-sensing valve core 4 is high-temperature steam or has a high temperature, the bellows 43 is heated and extends, causing the valve disc 44 to move toward the drain hole 421, thus closing the drain hole 421; when the medium temperature decreases and condensation occurs, the bellows 43 contracts, causing the valve disc 44 to move away from the drain hole 421, thus opening the drain hole 421 and allowing the condensate to drain.

[0055] In one embodiment, the bellows 43 is a sealed bellows filled with a temperature-sensitive medium. The temperature-sensitive medium expands or contracts in response to temperature changes, thereby causing the bellows 43 to extend or contract axially along the temperature-sensitive sleeve 41. The temperature-sensitive medium can be a waxy medium, a volatile liquid, a gas-liquid mixture, or other media capable of driving the bellows 43 to extend or contract according to temperature changes.

[0056] like Figure 2As shown, the valve seat 42 includes a fixed section 422 and a floating section 423. The fixed section 422 is fixedly and sealed to the temperature sensing sleeve 41 to ensure the stability and sealing of the connection between the valve seat 42 and the temperature sensing sleeve 41. The fixed section 422 can be connected to the temperature sensing sleeve 41 by means of threaded connection, welding, interference fit, sealing ring compression, or integral molding. The floating section 423 includes a flexible sleeve structure 424 and a rigid support structure 425 disposed at one end of the flexible sleeve structure 424 near the valve disc 44. The drainage hole 421 is at least partially formed in the floating section 423. That is, the drainage hole 421 can be entirely formed in the floating section 423, or it can be formed by the floating section 423 and the fixed section 422.

[0057] The fixed section 422 is located on the side of the floating section 423 away from the valve disc 44. The fixed section 422 has a fixed drainage channel 426 communicating with the drain hole 421. The fixed drainage channel 426 is used to discharge the condensate flowing out of the drain hole 421 to the temperature sensing valve core 4. After the condensate enters the fixed drainage channel 426 through the drain hole 421, it can further enter the spherical chamber 1 in the valve body 2, and finally be discharged through the water outlet chamber 24 and the outlet 22.

[0058] One end of the flexible sleeve structure 424 is connected to the fixed section 422, and the other end is connected to the rigid support structure 425. Through this structure, the rigid support structure 425 can move axially relative to the fixed section 422 along the temperature-sensing sleeve 41. When the rigid support structure 425 moves axially, the flexible sleeve structure 424 undergoes elastic deformation or expansion / contraction, thereby allowing the floating section 423 to approach or move away from the valve disc 44 within a predetermined stroke range. The flexible sleeve structure 424 can be a metal bellows, a rubber expansion joint, a temperature-resistant elastic sleeve, or other structures with axial deformation capability that can maintain the continuity of the medium channel. Through the flexible sleeve structure 424, while ensuring the continuity of the drainage path between the floating section 423 and the fixed section 422, the position of the drain hole 421 can be dynamically adjusted.

[0059] like Figure 2 As shown, a rigid support structure 425 is disposed at one end of the flexible sleeve structure 424 near the valve disc 44, providing structural support for the end of the drain hole 421 near the valve disc 44. The rigid support structure 425 can be made of stainless steel, copper alloy, corrosion-resistant alloy, or other materials with sufficient strength and temperature resistance. The rigid support structure 425 has a sealing port for mating with the valve disc 44, forming the end of the drain hole 421 near the valve disc 44. Because the sealing port is located on the rigid support structure 425, the valve disc 44 can mate with a highly rigid part when closing the drain hole 421, thereby improving the contact stability during closure.

[0060] The valve disc 44 has a conical sealing surface, which contacts the inner wall of the sealing port to close the drain hole 421. The conical sealing surface guides the valve disc 44 as it moves toward the sealing port. Even with slight coaxiality deviations between the valve disc 44 and the sealing port, a relatively stable seal can be achieved through the cooperation between the conical sealing surface and the inner wall of the sealing port. The cooperation of the rigid support structure 425, the sealing port, and the conical sealing surface improves the problems of insufficient contact between the valve disc 44 and the drain hole 421 and easy displacement of the sealing position in traditional structures, thereby enhancing the sealing reliability of the temperature-sensing valve core 4 under high-temperature steam conditions.

[0061] like Figure 2 As shown, the electromagnetic drive mechanism 45 is sleeved on the outside of the temperature sensing sleeve 41 and located at the axial position corresponding to the floating section 423. The electromagnetic drive mechanism 45 is connected to the floating section 423 and can drive the floating section 423 to move closer to or further away from the valve disc 44 along the axial direction of the temperature sensing sleeve 41 according to the amount of condensate in the medium channel 411, so as to adaptively adjust the distance between the drain hole 421 and the valve disc 44.

[0062] In one embodiment, the electromagnetic drive mechanism 45 is a ring-shaped electromagnetic drive mechanism, which surrounds the temperature-sensing sleeve 41. The ring structure allows the electromagnetic drive mechanism 45 to generate a more uniform driving force around the temperature-sensing sleeve 41, which helps reduce radial off-center load during the movement of the floating section 423 and improves the stability of the floating section 423's axial movement. The ring-shaped electromagnetic drive mechanism may include a ring-shaped housing and an electromagnetic coil disposed within the ring-shaped housing. The ring-shaped housing is used to install and protect the electromagnetic coil. When the electromagnetic coil is energized, it generates an electromagnetic force that can act directly or indirectly on the floating section 423 to drive it to move axially.

[0063] like Figure 2 As shown, the temperature-sensing valve core 4 also includes a connector, which connects the electromagnetic drive mechanism 45 and the floating section 423. The electromagnetic drive mechanism 45 drives the floating section 423 to move axially along the temperature-sensing sleeve 41 via the connector. The connector can be a magnetic conductor, push rod, shift fork, connecting ring, connecting pin, or other structure capable of transmitting axial driving force. In one embodiment, the connector passes through the wall of the temperature-sensing sleeve 41 and is connected to the rigid support structure 425. Since the electromagnetic drive mechanism 45 is located outside the temperature-sensing sleeve 41, and the rigid support structure 425 is located inside the temperature-sensing sleeve 41 or cooperates with the internal structure of the temperature-sensing sleeve 41, the transmission connection between the external electromagnetic drive mechanism 45 and the internal floating section 423 can be realized by the connector passing through the wall of the temperature-sensing sleeve 41.

[0064] The temperature-sensing sleeve 41 has a guide hole extending axially along the sleeve 41. A connector passes through the guide hole and can move along it. The guide hole defines the direction of movement of the connector, allowing it to move axially along the sleeve 41 under the drive of the electromagnetic drive mechanism 45, thereby causing the rigid support structure 425 and the floating section 423 to move along a predetermined path. To ensure the sealing of the temperature-sensing sleeve 41 at the guide hole, a sealing ring, flexible sealing sleeve, heat-resistant sealing gasket, or other sealing structure can be provided between the connector and the guide hole. Alternatively, the risk of media leakage can be reduced by placing the guide hole in a position that does not directly bear the scouring of the high-pressure medium.

[0065] like Figure 2 As shown, the temperature-sensing valve core 4 also includes an elastic deformation mechanism 48. The elastic deformation mechanism 48 is connected to the rigid support structure 425 and is used to provide a restoring force or buffering force to the floating section 423. In one embodiment, the elastic deformation mechanism 48 is sleeved on the outside of the flexible sleeve structure 424. By placing the elastic deformation mechanism 48 on the outside of the flexible sleeve structure 424, the elastic action direction of the elastic deformation mechanism 48 can be matched with the axial movement direction of the floating section 423, and it will not significantly occupy the internal drainage space of the drainage hole 421 or the fixed drainage channel 426.

[0066] The elastic deformation mechanism 48 may include a spring. One end of the spring is connected to or abuts against the rigid support structure 425, and the other end is connected to or abuts against the fixed section 422 or the temperature-sensing sleeve 41. When the electromagnetic drive mechanism 45 drives the floating section 423 to move, the spring is compressed or stretched; when the driving force of the electromagnetic drive mechanism 45 decreases or is removed, the spring can apply a restoring force to the rigid support structure 425, causing the floating section 423 to return to a predetermined position. The elastic deformation mechanism 48 can also act as a buffer during the movement of the floating section 423, reducing the impact on the rigid support structure 425 caused by the rapid movement of the electromagnetic drive mechanism 45, and reducing the risk of wear on the valve disc 44, the sealing port, the flexible sleeve structure 424, and the connecting parts.

[0067] like Figure 2 As shown, the temperature-sensing valve core 4 also includes a condensate branch channel 49. The condensate branch channel 49 is located on the outside of the flexible sleeve structure 424 and is used to receive condensate when the amount of condensate in the medium channel 411 reaches a predetermined state. The condensate branch channel 49 has a branch inlet, which is located at or near the rigid support structure 425. Since the rigid support structure 425 is adjacent to the mating position of the drain hole 421 and the valve disc 44, placing the branch inlet at or near this position helps to more accurately reflect the condensate accumulation state near the valve disc 44 and the drain hole 421.

[0068] The condensate branch channel 49 is connected to or cooperates with the detection unit. The detection unit is used to detect the amount of condensate entering the condensate branch channel 49 and generate an electrical signal to control the electromagnetic drive mechanism 45 based on the amount of condensate. The detection unit can be directly installed inside the condensate branch channel 49, or it can be installed at a detection chamber, detection tube, or detection interface connected to the condensate branch channel 49. The detection unit can include at least one of a level sensor, a conductivity detection unit, a pressure sensor, a flow sensor, or a float detection unit. For example, a level sensor can be used to detect the liquid level height inside the condensate branch channel 49; a conductivity detection unit can determine the condensate entry status based on the difference in conductivity between steam and condensate; a pressure sensor can output a detection signal based on the pressure change caused by condensate accumulation; a flow sensor can detect the condensate flow rate entering the condensate branch channel 49; and a float detection unit can determine the change in condensate volume based on the float position.

[0069] In one embodiment, the magnitude of the electrical signal generated by the detection unit is positively correlated with the amount of condensate entering the condensate branch channel 49. That is, when the amount of condensate entering the condensate branch channel 49 is small, the detection unit outputs a small electrical signal; when the amount of condensate entering the condensate branch channel 49 increases, the detection unit outputs a large electrical signal. The electromagnetic drive mechanism 45 can generate a driving force corresponding to the amount of condensate based on this electrical signal.

[0070] like Figure 2 As shown, the temperature-sensing valve core 4 may also include a controller. The electromagnetic drive mechanism 45 is electrically connected to the controller, which controls the driving direction and amount of the electromagnetic drive mechanism 45 based on the condensate flow rate signal. The detection unit can transmit the condensate flow rate signal to the controller. After receiving the condensate flow rate signal, the controller generates a corresponding control signal according to preset control logic to control the electromagnetic drive mechanism 45 to output axial driving force. The controller can be a microcontroller, control circuit board, comparator circuit, analog control module, or other control device capable of controlling the on / off state or current magnitude of the electromagnetic coil based on the detection signal.

[0071] In one embodiment, the controller is configured to generate a voltage or current signal of corresponding magnitude based on the condensate flow rate signal, thereby controlling the electromagnetic drive mechanism 45 to output a corresponding axial driving force. Thus, the driving force of the electromagnetic drive mechanism 45 can be correlated with the condensate flow rate, and the amount of movement of the floating section 423 along the axial direction of the temperature sensing sleeve 41 can also change in accordance with the driving force of the electromagnetic drive mechanism 45. For example, when the condensate flow rate is low, the controller controls the electromagnetic coil to output a small current, causing the electromagnetic drive mechanism 45 to generate a small driving force, and the floating section 423 to generate a small displacement or remain in its original position; when the condensate flow rate increases, the controller controls the electromagnetic coil to output a larger current, causing the electromagnetic drive mechanism 45 to generate a larger driving force, and the floating section 423 to generate a larger displacement, thereby changing the distance between the drain hole 421 and the valve disc 44.

[0072] In addition to proportional control, the controller can also use threshold control. That is, when the amount of condensate in the medium channel 411 is less than a predetermined threshold, the controller keeps the electromagnetic drive mechanism 45 in the first drive state and keeps the floating section 423 in the first position; when the amount of condensate in the medium channel 411 is greater than or equal to the predetermined threshold, the controller controls the electromagnetic drive mechanism 45 to drive the floating section 423 to move to the second position.

[0073] When the floating section 423 is in the first position, there is a first gap between the valve disc 44 and the drain hole 421; when the floating section 423 is in the second position, there is a second gap between the valve disc 44 and the drain hole 421. The second gap is different from the first gap. By switching the floating section 423 between the first and second positions, the temperature-sensitive valve core 4 can form different drainage or sealing states according to the change in the amount of condensate.

[0074] In one embodiment, the second gap is greater than the first gap. In this case, when the condensate flow increases, the electromagnetic drive mechanism 45 drives the floating section 423 to move, increasing the drainage gap between the valve disc 44 and the drain hole 421. This increases the real-time flow rate and velocity of the condensate discharged through the drain hole 421, preventing excessive condensate retention in the temperature sensing sleeve 41.

[0075] In another embodiment, the second gap is smaller than the first gap. In this case, when improved steam seal reliability is required, the electromagnetic drive mechanism 45 drives the floating section 423 to move, bringing the drain hole 421 or sealing port closer to the valve disc 44, thereby reducing the closing stroke required for the valve disc 44 to close the drain hole 421. This increases the likelihood of sufficient contact between the valve disc 44 and the sealing port, reducing the risk of steam leakage, even when the bellows 43 has a limited thermal extension stroke.

[0076] The above two methods can be selected according to the actual product control logic, or switched according to different operating conditions under the control of the controller. For example, during the drainage stage when a large amount of condensate accumulates, the controller can control the floating section 423 to move to a position that increases the drainage gap; when a high-temperature steam condition is detected or when a stronger shut-off action is required, the controller can control the floating section 423 to move to a position that reduces the shut-off stroke.

[0077] like Figure 2 As shown, the temperature-sensing valve core 4 also includes a positioning tube 47, and a bellows 43 is disposed within the positioning tube 47. The positioning tube 47 is used to limit the radial displacement of the bellows 43 and / or the valve disc 44. The positioning tube 47 can be arranged along the axial direction of the temperature-sensing sleeve 41. The positioning tube 47 is provided with an opening 471, and the water inlet chamber 23 communicates with the opening 471, so that the medium filtered by the filter 3 can enter the positioning tube 47 through the water inlet chamber 23 and the opening 471, and further act on the area where the bellows 43 and the valve disc 44 are located.

[0078] By setting the positioning tube 47, the extension and retraction direction of the bellows 43 can be restricted, reducing radial deflection of the bellows 43 due to fluid impact or uneven temperature changes. Simultaneously, the positioning tube 47 can also constrain the movement path of the valve disc 44, allowing it to move more stably along the axial direction of the temperature-sensing sleeve 41 towards or away from the drain hole 421. In one embodiment, the floating section 423, valve disc 44, and bellows 43 are arranged coaxially or substantially coaxially. This coaxial or substantially coaxial arrangement ensures that the driving force of the bellows 43 on the valve disc 44, the sealing force of the valve disc 44 on the sealing port, and the axial adjustment direction of the floating section 423 are consistent, thereby reducing eccentric forces and improving the opening and closing stability and sealing reliability of the temperature-sensing valve core 4.

[0079] During the initial operation of the steam trap, steam or a mixture of steam and condensate enters the valve body 2 through inlet 21 and is filtered by filter 3 before entering the inlet chamber 23. Subsequently, the medium enters the medium channel 411 inside the temperature-sensing valve core 4 through the opening 471 on the positioning tube 47.

[0080] When the temperature of the medium entering the temperature-sensing valve core 4 is high, the temperature-sensing medium inside the bellows 43 expands due to heat, causing the bellows 43 to extend axially along the temperature-sensing sleeve 41. The bellows 43 pushes the valve disc 44 toward the drain hole 421, causing the conical sealing surface of the valve disc 44 to contact the sealing port on the rigid support structure 425, thereby closing the drain hole 421. At this time, the medium flow path between the inlet 21 and the outlet 22 is disconnected or restricted to reduce high-temperature steam leakage.

[0081] When the steam temperature decreases and condensation occurs, the temperature-sensitive medium inside the bellows 43 contracts, causing the bellows 43 to retract axially along the temperature-sensitive sleeve 41. The valve disc 44 moves with the bellows 43 and moves away from the drain hole 421, opening the drain hole 421. The condensate in the medium channel 411 can then flow through the drain hole 421 into the fixed drainage channel 426 and further into the spherical chamber 1.

[0082] When the amount of condensate in the medium channel 411 is low, the condensate can be discharged mainly through the drainage hole 421 and the fixed drainage channel 426, and the floating section 423 can remain in the first position. When the amount of condensate in the medium channel 411 increases and reaches a predetermined state, some of the condensate enters the condensate branch channel 49, and the detection unit detects the change in the amount of condensate and generates a corresponding electrical signal.

[0083] The controller controls the electromagnetic drive mechanism 45 to operate based on the condensate flow signal output by the detection unit. The electromagnetic drive mechanism 45 drives the rigid support structure 425 and the floating section 423 to move axially along the temperature sensing sleeve 41 via the connecting piece. When the floating section 423 moves, the flexible sleeve structure 424 undergoes elastic deformation, maintaining the drainage channel between the floating section 423 and the fixed section 422.

[0084] Under drainage conditions with increased condensate flow, the electromagnetic drive mechanism 45 can drive the floating section 423 to move to a position that increases the distance between the valve disc 44 and the drain hole 421, thereby increasing the drainage gap and improving the condensate discharge speed. The condensate discharged through the drain hole 421 and the fixed drainage channel 426 enters the spherical chamber 1, causing the condensate level in the spherical chamber 1 to rise. When the condensate level exceeds the inlet of the outlet chamber 24, the condensate enters the outlet chamber 24 and is discharged from the valve body 2 through the outlet 22.

[0085] In applications requiring improved sealing reliability, the electromagnetic drive mechanism 45 can drive the floating section 423 to move to a position where the sealing port is close to the valve disc 44, thereby shortening the stroke required for the valve disc 44 to close the drain hole 421. When the next high-temperature steam enters the temperature-sensing valve core 4, the bellows 43 expands due to heat. Even if the expansion stroke is somewhat limited, the valve disc 44 can still reliably contact the sealing port to close the drain hole 421 and reduce steam leakage.

[0086] The temperature-sensitive valve core 4 provided in this embodiment features a valve seat 42 with a fixed section 422 and a floating section 423. The floating section 423 includes a flexible sleeve structure 424 and a rigid support structure 425, allowing the position of the drain hole 421 to be adjusted axially relative to the valve disc 44 along the temperature-sensitive sleeve 41. Compared to conventional temperature-sensitive drain structures with a fixed distance between the valve disc 44 and the drain hole 421, this structure can adaptively adjust the distance between the drain hole 421 and the valve disc 44 according to changes in condensate volume.

[0087] When the condensate volume is large, the floating section 423 can be driven by the electromagnetic drive mechanism 45 to a position that increases the drain gap, allowing the condensate to be discharged through the drain hole 421 at a larger flow rate and higher velocity, thereby reducing condensate retention. When it is necessary to improve the reliability of the steam seal, the floating section 423 can be driven to a position that reduces the closing stroke, making it easier for the bellows 43 to achieve sufficient contact when driving the valve disc 44 to close the drain hole 421, thereby reducing the risk of steam leakage.

[0088] Meanwhile, the cooperation of the annular electromagnetic drive mechanism 45, the connecting parts, and the guide hole helps improve the guiding accuracy and stability of the axial movement of the floating section 423; the elastic deformation mechanism 48 can provide the floating section 423 with restoring force and buffering force; the condensate branch channel 49, the detection unit, and the controller can convert the change in condensate volume into a signal for controlling the electromagnetic drive mechanism 45, thereby achieving more accurate adaptive adjustment; the filter 3 can reduce the damage of impurities to the temperature sensing valve core 4; and the spherical chamber 1 can accommodate and buffer the discharged condensate. Therefore, the embodiments of this application can improve the drainage efficiency, sealing reliability, and operational stability of the steam trap under different steam temperatures and condensate generation conditions.

[0089] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A temperature-sensing valve core, characterized in that, include: A temperature-sensing sleeve, wherein a medium channel is formed inside the temperature-sensing sleeve; A valve seat is disposed at one end of the temperature sensing sleeve, and the valve seat is provided with a drainage hole communicating with the medium channel; A valve disc, located inside the temperature-sensing sleeve, is used to open or close the hydrophobic hole; A bellows is disposed inside the temperature sensing sleeve. The bellows can extend and retract along the axial direction of the temperature sensing sleeve in response to changes in the medium temperature, so as to drive the valve disc to move relative to the condensate hole. The valve seat includes a fixed section and a floating section. The fixed section is fixed and sealed to the temperature sensing sleeve. The floating section includes a flexible sleeve structure and a rigid support structure disposed at one end of the flexible sleeve structure near the valve disc. The drainage hole is at least partially formed in the floating section. The temperature-sensitive valve core also includes an electromagnetic drive mechanism. The electromagnetic drive mechanism is sleeved on the outside of the temperature-sensitive sleeve and located at an axial position corresponding to the floating section. The electromagnetic drive mechanism is connected to the floating section and can drive the floating section to move closer to or further away from the valve disc along the axial direction of the temperature-sensitive sleeve according to the amount of condensate in the medium channel, so as to adaptively adjust the distance between the drainage hole and the valve disc.

2. The temperature-sensing valve core according to claim 1, characterized in that, The fixed section is located on the side of the floating section away from the valve disc. The fixed section has a fixed drainage channel communicating with the drainage hole. The fixed drainage channel is used to discharge the condensate flowing out of the drainage hole into the temperature-sensitive valve core.

3. The temperature-sensing valve core according to claim 1, characterized in that, One end of the flexible sleeve structure is connected to the fixed section, and the other end is connected to the rigid support structure, so that the rigid support structure can move relative to the fixed section along the axial direction of the temperature-sensing sleeve.

4. The temperature-sensing valve core according to claim 1, characterized in that, The temperature-sensing valve core also includes an elastic deformation mechanism, which is connected to the rigid support structure and is used to provide a restoring force or a buffering force to the floating section.

5. The temperature-sensing valve core according to claim 1, characterized in that, The temperature-sensing valve core also includes a condensate branch channel, which is located on the outside of the flexible sleeve structure and is used to receive condensate when the amount of condensate in the medium channel reaches a predetermined state.

6. The temperature-sensing valve core according to claim 5, characterized in that, The condensate branch channel is connected to or cooperates with the detection unit. The detection unit is used to detect the amount of condensate entering the condensate branch channel and generate an electrical signal to control the electromagnetic drive mechanism based on the amount of condensate. The magnitude of the electrical signal is positively correlated with the amount of condensate entering the condensate branch channel, so that the electromagnetic drive mechanism generates a driving force corresponding to the amount of condensate.

7. The temperature-sensing valve core according to claim 1, characterized in that, The electromagnetic drive mechanism is configured to: keep the floating section in a first position when the amount of condensate in the medium channel is less than a predetermined threshold; and drive the floating section to move to a second position when the amount of condensate in the medium channel is greater than or equal to the predetermined threshold.

8. The temperature-sensing valve core according to claim 7, characterized in that, When the floating section is in the first position, there is a first gap between the valve disc and the drainage hole; when the floating section is in the second position, there is a second gap between the valve disc and the drainage hole, and the second gap is different from the first gap.

9. A steam trap, characterized in that, It includes a valve body and a temperature-sensitive valve core as described in any one of claims 1 to 8, wherein the temperature-sensitive valve core is disposed within the valve body.

10. The steam trap according to claim 9, characterized in that, A spherical chamber is formed inside the valve body, and the temperature-sensing valve core is connected to the spherical chamber so that the condensate discharged through the temperature-sensing valve core enters the spherical chamber.

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