Detection mechanism and boiler air leakage detection device

Abstract

The invention relates to the technical field of boiler gas leakage, in particular to a detection mechanism which comprises a shell. The rotating part is rotationally connected with the interior of the shell and can rotate in the first direction or the second direction; the expansion assembly comprises a fixing part and a sound production part, the sound production part is in contact with the fixing part along with expansion of the expansion assembly, the pressure adjusting part comprises a transmission part and an extrusion block, the extrusion block is connected with the transmission part and rotates along with the transmission part, an elastic medium layer is arranged in the pressure adjusting part, and the extrusion block extrudes the elastic medium layer when rotating. And the elastic medium layer outputs pressure to the sealing area after being extruded. The beneficial effects of the invention are that the sound production member is driven to contact with the fixed part through heating expansion of the expansion assembly, the rotating member is pushed along the first direction, and the sound production member is pushed to move along a specific path to form mechanical contact with the fixed part to generate a prompt tone. And when rotating in the second direction, the elastic medium layer is extruded by the extrusion block, pressure is dynamically supplemented to the sealing area, and the sealing effect is remarkably enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of boiler air leakage, in particular to a detection mechanism and a boiler air leakage detection device. Background Art

[0002] Detecting air leaks from the bottom of power plant boilers is a crucial step in routine boiler maintenance. Boilers primarily use coal as fuel for power generation. The coal is ground into powder and blown into the boiler, generating a large amount of heat. This heat is continuously converted and transferred, driving the steam turbine to generate electricity. Boiler bottom air leaks significantly impact power generation. Leaks increase exhaust volume, causing the exhaust outlet temperature to rise excessively, reducing boiler efficiency and leading to uneven combustion and energy waste. Therefore, installing detection devices to accurately measure air leaks allows for timely maintenance, minimizing losses, and increasing power generation.

[0003] During the detection process, the existing boiler air leakage detection and measurement device often causes the gas input into the boiler to leak due to the loose sealing of the boiler connection opening, resulting in inaccurate boiler air pressure detection data obtained by the air pressure detection instrument. It is impossible to determine whether the leakage is caused by the boiler itself or the loose sealing, which is not conducive to user use. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is that the opening at the boiler connection is not tightly sealed, which causes the gas input into the boiler to leak, thereby causing the boiler air pressure detection data obtained by the air pressure detection instrument to be inaccurate, and it is impossible to determine whether the leakage is caused by the boiler itself or by a loose seal.

[0005] The above technical problems are solved by the following technical solutions: The present invention proposes a detection mechanism, which includes a shell; a rotating part, which is rotatably connected to the inside of the shell and can rotate in a first direction or a second direction; an expansion component, which includes a fixed part and a sound-emitting part, and the sound-emitting part contacts the fixed part as the expansion component expands; a pressure regulating part, which includes a transmission part and an extrusion block, and the extrusion block is connected to the transmission part and rotates with the transmission part; an elastic medium layer is provided in the pressure regulating part, and the extrusion block squeezes the elastic medium layer when it rotates, and the elastic medium layer outputs pressure to the sealing area after being squeezed.

[0006] In a preferred embodiment of the detection mechanism of the present invention: the fixing portion is fixed in the housing and is located below the rotating member.

[0007] In a preferred embodiment of the detection mechanism of the present invention: the expansion component is arranged outside the rotating part and opposite to the fixed part, the expansion component contains a medium that expands when heated, and the expansion component expands outward after being heated.

[0008] In a preferred embodiment of the detection mechanism of the present invention: the transmission member is rotationally connected to the shell, and the transmission member is connected to the rotating member through a one-way transmission mechanism. The one-way transmission mechanism transmits power to drive the transmission member to rotate when the rotating member rotates along the second direction, and disconnects the transmission connection when the rotating member rotates along the first direction, and the transmission member remains stationary.

[0009] In a preferred embodiment of the detection mechanism of the present invention: the one-way transmission mechanism includes a ratchet groove and a pawl, the ratchet groove is evenly distributed along the outer periphery of the rotating part, the inclination direction of the ratchet groove matches the contact surface of the pawl, and the ratchet groove is embedded in the ratchet groove to realize power transmission when the rotating part rotates in the second direction, and slides out of the ratchet groove to disconnect the transmission connection when the rotating part rotates in the first direction.

[0010] In a preferred embodiment of the detection mechanism of the present invention, the extrusion block is provided with an inclined surface which gradually rises in a clockwise direction, the inclined surface is in sliding contact with the elastic medium layer, and the inclined surface gradually increases the extrusion force on the elastic medium layer when rotating.

[0011] In order to solve the above technical problems, the present invention also provides the following technical solutions: a boiler air leakage detection device, comprising a detection mechanism, and a boiler, a groove is provided at the connection between the shell and the boiler; a sealing ring, the sealing ring is fixedly embedded in the groove and fits with the outer wall of the boiler to form a seal; a gas transmission component, the gas transmission component is connected to the middle of the shell, and the gas transmission component is connected to the boiler to transport hot air; a driving member, the driving member is rotatably connected to the side of the shell away from the boiler, the driving member is fixedly connected to the rotating member by bolts, and the rotating member facilitates the staff to apply a rotational torque to rotate the driving member; a locking mechanism, the locking mechanism is slidably arranged on the outside of the shell and is detachably connected to the driving member, and the locking mechanism is force-driven when the driving member rotates to a predetermined position to limit the rotation of the driving member.

[0012] In a preferred embodiment of the boiler air leakage detection device of the present invention: the locking mechanism includes a sliding part, which is fixed to the outside of the shell and extends radially; a sliding rod, which is slidably connected to the inside of the sliding part, and one end of the sliding rod moves through the shell and contacts the driving part, and the driving part is provided with a plurality of limiting holes on the side facing the sliding rod; a spring, which is connected between the sliding part and the sliding rod, and when not subjected to external force, the spring pushes the sliding rod out of the limiting hole to avoid interfering with the rotation of the driving part; a snap fastener, which is provided on the sliding rod and detachably connected to the sliding part, and when the sliding rod is inserted into the limiting hole, the snap fastener is fixed to the sliding part to maintain the stability of the sliding rod.

[0013] In a preferred embodiment of the boiler air leakage detection device of the present invention: it also includes a drainage hole, which is opened on the shell. When the sealing ring ages and leaks, the leaked hot air enters the shell through the drainage hole and is absorbed by the expansion component, causing the expansion component to expand.

[0014] In a preferred embodiment of the boiler air leakage detection device of the present invention: an extrusion layer is provided inside the groove, the extrusion layer is connected to the expansion assembly, and the extrusion layer applies radial pressure to the sealing ring, thereby enhancing the sealing performance between the sealing ring and the boiler.

[0015] The beneficial effect of the present invention is that the sound-generating member is driven to contact the fixed part by the thermal expansion of the expansion component, pushing the rotating member along the first direction, and then pushing the sound-generating member to move along a specific path, forming mechanical contact with the fixed part, and generating a clear prompt sound.

[0016] The matching design of the ratchet groove and pawl allows the rotating member to drive the transmission member when rotating in the second direction, while disconnecting it when rotating in the first direction, thus preventing malfunction. This not only optimizes motion control efficiency but also significantly reduces mechanical wear caused by reverse rotation.

[0017] When rotating in the second direction, the elastic medium layer is controlled by the extrusion block to dynamically add pressure to the sealing area, thereby significantly enhancing the sealing effect.

[0018] In the unlocked state, the slide bar is released from the stop hole by the elastic force of the spring, preventing interference with the free rotation of the driver. In the locked state, the slider is fixed, ensuring the stability of the slide bar. This significantly improves the stability of the device in high temperature or vibration environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings of the embodiments of the present invention. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention. Among them:

[0020] Figure 1 A three-dimensional diagram of a rotating member of a detection mechanism is shown;

[0021] Figure 2 An exploded perspective view of a rotating part of a detection mechanism is shown;

[0022] Figure 3 A bottom perspective view of the expansion assembly of the detection mechanism is shown;

[0023] Figure 4 shows the overall schematic diagram of the detection mechanism;

[0024] Figure 5 An exploded perspective view of the locking mechanism of the detection mechanism is shown. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below with reference to specific embodiments and the accompanying drawings.

[0026] The terms used in the present invention are those commonly used in the art in view of the functions of the present invention, but these terms may vary according to the intentions of those skilled in the art, precedents, or new technologies in the art. In addition, specific terms may be selected by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the present invention. Therefore, the terms used in the specification should not be understood as simple names, but rather as the meanings of the terms and the overall description of the present invention.

[0027] Reference Figure 1-3 , this embodiment provides a detection mechanism, including a shell 1; a rotating member 2, the rotating member 2 is rotatably connected to the inside of the shell 1 and can rotate in a first direction or a second direction; an expansion component 3, including a fixed part 31 and a sounding member 32, the sounding member 32 contacts the fixed part 31 as the expansion component 3 expands, a pressure regulating part 4, including a transmission member 42 and an extrusion block 43, the extrusion block 43 is connected to the transmission member 42 and rotates with the transmission member 42, an elastic medium layer 41 is provided in the pressure regulating part 4, the extrusion block 43 squeezes the elastic medium layer 41 when it rotates, and the elastic medium layer 41 outputs pressure to the sealing area after being squeezed; wherein, the expansion component 3 expands due to heat and drives the sounding member 32 to contact and rotate with the fixed part 31 to produce a prompt sound, and the transmission member 42 drives the extrusion block 43 to squeeze the elastic medium layer 41 when it rotates in the second direction through the one-way transmission mechanism 21 to supplement the pressure to the sealing area. When the temperature rises, the expansion component 3 expands due to the heat, driving the sound-generating member 32 to contact the fixed part 31, prompting the rotating member 2 to rotate in the first direction and generate a warning sound to indicate gas leakage; through the one-way transmission mechanism 21, the rotating member 2 drives the transmission member 42 when rotating in the second direction, thereby causing the extrusion block 43 to squeeze the elastic medium layer 41, adding pressure to the sealing area, taking into account both the timely detection of gas leakage and the dynamic enhancement of the sealing effect, thereby improving the safety and reliability of the device.

[0028] In this embodiment, the housing 1 fixes and accommodates the rotating member 2, the expansion assembly 3 and the pressure regulating portion 4, ensuring that each component operates stably at a predetermined position.

[0029] The housing 1 is connected to the rotating member 2 through rotation, providing a rotation space; and forms an installation basis with the expansion assembly 3 and the pressure regulating part 4 to ensure the coordinated operation of each component.

[0030] The rotating member 2 is a rotatable component, which is connected to the interior of the housing 1 by rotation (such as through a shaft or a hinge).

[0031] The rotating member 2 can rotate in a first direction or a second direction (two opposite rotation directions).

[0032] The rotating member 2 transmits the motion state of the expansion assembly 3 by rotation, triggers the generation of the prompt sound, and drives the pressure regulating part 4 through the one-way transmission mechanism 21.

[0033] The expansion assembly 3 includes a fixed portion 31 and a sound-generating member 32. The fixed portion 31 is a static structure fixed in the housing 1; the sound-generating member 32 is a movable member that can move as the expansion assembly 3 expands.

[0034] When the expansion component 3 is heated, the volume expands, pushing the sounding member 32 to move along a specific direction (such as a straight line or an arc path) until it contacts the fixing portion 31 .

[0035] When the sound-generating member 32 contacts the fixing portion 31 , a prompt sound is generated by friction or collision.

[0036] The expansion component 3 may be made of a heat-sensitive material (such as a bimetallic strip or a heat-expanding liquid) to achieve thermal expansion.

[0037] The contact surface between the sounding member 32 and the fixing portion 31 may be designed as a toothed surface or a friction surface to enhance the prompt sound effect.

[0038] The pressure regulating unit 4 includes a transmission member 42, an extrusion block 43, and an elastic medium layer 41. The transmission member 42 is a rotating component connected to the rotating member 2 via a one-way transmission mechanism 21; the extrusion block 43 is fixedly connected to the transmission member 42; and the elastic medium layer 41 is a compressible, flexible material located within the pressure regulating unit 4.

[0039] When the rotating member 2 rotates in the second direction, the transmission member 42 is driven to drive the extrusion block 43 to rotate; when the extrusion block 43 rotates, it squeezes the elastic medium layer 41 to deform it.

[0040] The elastic medium layer 41 generates pressure after being squeezed, and outputs the pressure to the sealing area to enhance the sealing effect.

[0041] The transmission member 42 receives the rotational motion of the rotating member 2 through the one-way transmission mechanism 21 (such as a one-way gear or ratchet mechanism); the extrusion block 43 is in direct contact with the elastic medium layer 41 to transmit mechanical force; the elastic medium layer 41 is connected to the sealing area and outputs pressure to maintain sealing performance.

[0042] The elastic medium layer 41 may be a rubber membrane or a compressed gas layer, providing controllable pressure output.

[0043] When the ambient temperature rises, the expansion assembly 3 expands due to the thermal effect, pushing the sounding member 32 to move and contact the fixed portion 31, producing a warning sound. This simultaneously drives the rotating member 2 to rotate in the first direction, detecting the possibility of a gas leak. In the event of a gas leak, the rotating member 2 rotates in the second direction, driving the transmission member 42 of the pressure regulating unit 4 via the one-way transmission mechanism 21, which in turn rotates the extrusion block 43. The extrusion block 43 compresses the elastic medium layer 41, generating pressure that is transmitted to the sealing area to enhance the sealing effect.

[0044] refer to Figure 2-3In one embodiment provided in the present application, the fixed portion 31 is fixed in the shell 1 and is located below the rotating member 2; the expansion component 3 is arranged on the outside of the rotating member 2 and opposite to the fixed portion 31. The expansion component 3 contains a medium that expands when heated, and the expansion component 3 expands outward after being heated.

[0045] In this embodiment, the expansion assembly 3 is a component containing a heat-expandable medium, which is disposed outside the rotating member 2 and opposite to the fixed portion 31. The interior is filled with a heat-expandable medium (such as a thermosensitive liquid, gas, or bimetallic material).

[0046] The volume of the heated expansion medium increases as the temperature rises, pushing the housing of the expansion assembly 3 to expand outward (along a straight line or an arc path). The sounding member 32 moves with the expansion of the expansion assembly 3 until it contacts the fixing portion 31.

[0047] The expansion component 3 cooperates with the fixed part 31 through the contact of the sound-generating part 32 to generate the prompt sound; and transmits motion with the rotating part 2 through mechanical contact, and the rotating part 2 drives it to rotate.

[0048] The sounding member 32 may be a metal sheet or a striking head, and generates mechanical vibration when in contact with the fixing portion 31 .

[0049] refer to Figure 2-3 As an optional embodiment, the transmission member 42 is rotationally connected to the housing 1, and the transmission member 42 is connected to the rotating member 2 via a one-way transmission mechanism 21. The one-way transmission mechanism 21 transmits power to drive the transmission member 42 to rotate when the rotating member 2 rotates in the second direction, and disconnects the transmission connection when the rotating member 2 rotates in the first direction, and the transmission member 42 remains stationary. The one-way transmission mechanism 21 includes a ratchet groove 211 and a pawl 212. The ratchet grooves 211 are evenly distributed along the periphery of the rotating member 2. The inclined direction of the ratchet groove 211 matches the contact surface of the pawl 212. The pawl 212 is embedded in the ratchet groove 211 when the rotating member 2 rotates in the second direction to achieve power transmission, and slides out of the ratchet groove 211 to disconnect the transmission connection when the rotating member 2 rotates in the first direction. The matching design of the ratchet groove 211 and the pawl 212 ensures the accuracy and reliability of the one-way transmission, avoids malfunction of the transmission ring during counterclockwise rotation, and optimizes the motion control efficiency of the device.

[0050] In this embodiment, the transmission member 42 is a rotatable component, which is fixed in the housing 1 via a rotational connection (such as a shaft or a bearing).

[0051] The transmission member 42 rotates in a specific direction (consistent with the second direction of the rotating member 2 ) under the drive of the one-way transmission mechanism 21 , and remains stationary when not driven.

[0052] The transmission member 42 receives the power transmitted by the one-way transmission mechanism 21 and drives the extrusion block 43 connected thereto to rotate, thereby achieving extrusion of the elastic medium layer 41 .

[0053] The transmission member 42 is fixed in position with the housing 1 by a rotational connection; it is connected to the rotating member 2 through a one-way transmission mechanism 21 and receives power only when the rotating member 2 rotates along the second direction; it is fixedly connected to the extrusion block 43 of the pressure regulating part 4 to transmit rotational motion.

[0054] The transmission member 42 can be a rotating disk, which has a simple structure and is convenient for transmitting power.

[0055] The one-way transmission mechanism 21 consists of a ratchet groove 211 and a pawl 212. The ratchet groove 211 is a groove 51 structure evenly distributed along the outer periphery of the rotating member 2, with a groove surface having a specific tilt direction. The pawl 212 is an elastic or rigid component connected to the transmission member 42, and its contact surface matches the tilt direction of the ratchet groove 211.

[0056] When the rotating member 2 rotates clockwise in the second direction, the pawl 212 is embedded in the ratchet groove 211, meshing with the groove surface, and transmitting power to the transmission member 42; when the rotating member 2 rotates in the first direction (counterclockwise), the pawl 212 slides out of the ratchet groove 211, disconnecting the transmission connection, and the transmission member 42 remains stationary.

[0057] The one-way transmission mechanism 21 realizes selective power transmission between the rotating member 2 and the transmission member 42, ensuring that the transmission member 42 is driven only when rotating in the second direction, thereby avoiding malfunction when rotating in the first direction.

[0058] refer to Figure 2 In one embodiment provided in the present application, the extrusion block 43 is provided with an inclined surface 431 that gradually rises in a clockwise direction. The inclined surface 431 is in sliding contact with the elastic medium layer 41. The inclined surface 431 gradually increases the extrusion force on the elastic medium layer 41 when rotating.

[0059] In this embodiment, the progressive design of the inclined side makes the extrusion process of the extrusion block 43 on the elastic medium layer 41 smooth and controllable, extending the service life of the elastic medium layer 41, while ensuring that the gas enters the expansion component 3 evenly to stably supplement the sealing pressure.

[0060] Reference Figure 3-4 The present embodiment provides a boiler air leakage detection device, including a boiler 5, a groove 51 is provided at the connection between the shell 1 and the boiler 5; a sealing ring 6, the sealing ring 6 is fixedly embedded in the groove 51, and fits with the outer wall of the boiler 5 to form a seal; a gas transmission component 7, the gas transmission component 7 is connected to the middle of the shell 1, and the gas transmission component 7 is communicated with the boiler 5 to transmit hot air; a driving member 8, the driving member 8 is rotatably connected to the side of the shell 1 away from the boiler 5, and the driving member 8 is fixedly connected to the rotating member 2 by bolts. The rotating member 2 facilitates the staff to apply a rotational torque to rotate the driving member 8; a locking mechanism 9, the locking mechanism 9 is slidably arranged on the outside of the shell 1 and is detachably connected to the driving member 8. When the driving member 8 rotates to a predetermined position, the locking mechanism 9 is driven by force to limit the rotation of the driving member 8.

[0061] In this embodiment, a groove 51 is provided at the connection between the shell 1 and the boiler 5 . The groove 51 is an annular or partial groove body for embedding the sealing ring 6 .

[0062] The housing 1 provides structural support and accommodates the gas transmission component 7, the driving component 8 and the locking mechanism 9; the groove 51 fixes the sealing ring 6 to ensure the sealing of the connection with the boiler 5.

[0063] The shell 1 is sealed to the boiler 5 through the groove 51 and the sealing ring 6; it is fixedly connected to the gas transmission component 7 to provide a gas transmission channel; it is connected to the driving member 8 through a rotational connection to support its rotation; and it is connected to the locking mechanism 9 through a sliding connection to achieve motion restriction.

[0064] The groove 51 may be a rectangular or trapezoidal cross-section groove to ensure stable embedding of the sealing ring 6 .

[0065] The sealing ring 6 is an annular elastic component, fixedly embedded in the groove 51 of the shell 1 , and its outer surface is tightly fitted to the outer wall of the boiler 5 .

[0066] The sealing ring 6 fills the gap between the shell 1 and the boiler 5 to form a sealed interface to prevent gas leakage.

[0067] The sealing ring 6 fits tightly with the groove 51 of the shell 1 to ensure a fixed position; it fits with the outer wall of the boiler 5 to form a sealing area, and cooperates with the pressure regulating part 4 to receive supplementary pressure to enhance the sealing effect.

[0068] The sealing ring 6 can be made of high temperature resistant rubber or silicone material to ensure elasticity at high temperatures.

[0069] The cross section of the sealing ring 6 can be O-shaped or rectangular to optimize the fitting effect.

[0070] The gas transmission component 7 is a hollow pipe or channel structure, fixedly connected to the middle of the shell 1 and communicated with the interior of the boiler 5.

[0071] The gas transmission component 7 provides a transmission path for hot gas from the boiler 5 to the shell 1, ensuring gas circulation.

[0072] The gas delivery component 7 is fixedly connected to the shell 1 and relies on the shell 1 for positioning; it is directly connected to the boiler 5 to deliver hot gas and cooperate with the expansion component 3. When leakage occurs, the hot gas causes the expansion component 3 to expand due to heat.

[0073] The driving member 8 is a rotatable component, which is installed on the side of the shell 1 away from the boiler 5 through a rotating connection (such as a shaft or a bearing), and is fixedly connected to the rotating member 2 by bolts.

[0074] The driving member 8 rotates around the axis under the action of an external rotational torque and is restricted by the locking mechanism 9 when it reaches a predetermined position.

[0075] The driving member 8 transmits the externally applied rotational force to the rotating member 2, driving it to rotate in the first or second direction, and cooperates with the one-way transmission mechanism 21 to trigger pressure regulation.

[0076] The driving member 8 is fixed to the housing 1 by a rotational connection; is rigidly connected to the rotating member 2 by bolts to transmit rotational motion; and is detachably connected to the locking mechanism 9 to accept its motion restriction.

[0077] The locking mechanism 9 is a sliding component, which is arranged on the outside of the housing 1 and is connected to the housing 1 through a slide rail or a slide groove, and forms a detachable connection with the driving member 8.

[0078] When the driving member 8 rotates to a predetermined position, the locking mechanism 9 slides to a locking position to restrict the driving member 8 from rotating.

[0079] The locking mechanism 9 locks the driving member 8 by sliding, thereby preventing the driving member from accidentally rotating outside of a predetermined position and maintaining stability.

[0080] refer to Figure 4-5 As an optional embodiment, the locking mechanism 9 includes a sliding member 91, which is fixed to the outside of the shell 1 and extends radially; a sliding rod 92, which is slidably connected to the inside of the sliding member 91, and one end of the sliding rod 92 is movable through the shell 1 and contacts the driving member 8, and the driving member 8 is provided with a plurality of limiting holes on the side facing the sliding rod 92; a spring 93, which is connected between the sliding member 91 and the sliding rod 92, and when there is no external force, the spring 93 pushes the sliding rod 92 out of the limiting hole to avoid interfering with the rotation of the driving member 8; a snap fastener, which is provided on the sliding rod 92 and detachably connected to the sliding member 91. When the sliding rod 92 is inserted into the limiting hole, the snap fastener is fixed to the sliding member 91 to maintain the stability of the sliding rod 92.

[0081] In this embodiment, the sliding member 91 provides a sliding path and positioning support for the sliding rod 92, ensuring that the movement direction of the sliding rod 92 is accurate; at the same time, it serves as a connection basis for the snap fastener to maintain the stability of the locking mechanism 9.

[0082] The sliding member 91 is fixedly connected to the shell 1 to provide structural support; it is connected to the slide rod 92 through a sliding connection to guide its movement; it cooperates with the snap-fit ​​member to fix the position of the slide rod 92 through a detachable connection; it indirectly cooperates with the driving member 8 to achieve a locking function through the cooperation between the slide rod 92 and the limiting hole.

[0083] The sliding member 91 can be a cylindrical or rectangular cross-section tube to meet different sliding requirements.

[0084] The slide rod 92 is a slender member that is slidably connected to the inside of the slide member 91. One end of the slide rod 92 is movable through the shell 1 and contacts the drive member 8. A plurality of limiting holes are provided on the periphery of the drive member 8, and the shape of the end of the slide rod 92 matches the limiting holes.

[0085] The sliding rod 92 slides axially along the sliding member 91 , and its end portion can be inserted into or removed from the limiting hole of the driving member 8 .

[0086] The slide bar 92 limits the rotation of the driving member 8 by being inserted into the limiting hole, thereby completing the locking function; and realizes a detachable connection with the driving member 8 through sliding motion.

[0087] The slide rod 92 and the sliding member 91 maintain the movement path through a sliding connection; cooperate with the limiting hole of the driving member 8 to perform the locking action; cooperate with the spring 93 to accept its thrust to achieve the disengaged state; and be fixedly connected with the snap member to ensure stability during locking; indirectly cooperate with the rotating member 2 through the driving member 8 to affect its rotation state.

[0088] The spring 93 is an elastic component connected between the sliding member 91 and the sliding rod 92 , and is disposed inside the sliding member 91 or around the sliding rod 92 .

[0089] The spring 93 is in an extended state when no external force is applied, pushing the slide rod 92 to slide outward so that its end is separated from the limiting hole of the driving member 8; when compressed by an external force, the slide rod 92 is allowed to be inserted into the limiting hole.

[0090] The spring 93 provides elastic force to control the sliding position of the slide bar 92, ensuring that the slide bar 92 does not interfere with the rotation of the driving member 8 in the unlocked state.

[0091] The latch is a fixed component, which is provided on the slide bar 92 and is combined with the slide member 91 through a detachable connection (such as a slot or a pin).

[0092] The latch slides with the slide bar 92 and is fixed to the slide bar 91 and remains stationary when the slide bar 92 is inserted into the limiting hole; and moves with the slide bar 92 when disengaging.

[0093] The latch is fixedly connected to the sliding member 91 to stabilize the position of the sliding rod 92 when inserted into the limiting hole, thereby enhancing the locking effect.

[0094] refer to Figure 3 In one embodiment provided in the present application, a drainage hole 11 is further included. The drainage hole 11 is opened on the shell 1. When the sealing ring 6 ages and leaks, the leaked hot air enters the interior of the shell 1 through the drainage hole 11 and is absorbed by the expansion component 3, causing the expansion component 3 to expand.

[0095] refer to Figure 2-4 In one embodiment provided in the present application, an extrusion layer 511 is provided inside the groove 51 , and the extrusion layer 511 is connected to the expansion assembly 3 . The extrusion layer 511 applies radial pressure to the sealing ring 6 , thereby enhancing the sealing performance between the sealing ring 6 and the boiler 5 .

[0096] In this embodiment, the groove 51 is an annular or partial groove structure provided at the connection between the shell 1 and the boiler 5 , with a sealing ring 6 embedded therein and accommodating the extrusion layer 511 .

[0097] The groove 51 provides installation space for the sealing ring 6 and the extrusion layer 511 to ensure stable positioning of the two, and provides structural support for pressure transmission between the extrusion layer 511 and the sealing ring 6.

[0098] The groove 51 is integrally formed with the shell 1 and fits with the outer wall of the boiler 5 to form a sealing area; it is fixed to the sealing ring 6 by embedding to constrain its position; it is in direct contact with the extrusion layer 511 to transmit its pressure; and it is connected with the expansion component 3 and the pressure regulating part 4 through the shell 1 to receive pressure input.

[0099] The extrusion layer 511 is a flexible or deformable component, which is arranged inside the groove 51 and is connected to the expansion component 3 through a pipe or a channel, and can receive the pressure transmitted by the expansion component 3.

[0100] The extrusion layer 511 is deformed under the pressure of the expansion assembly 3 and applies pressure to the sealing ring 6 in the radial direction.

[0101] The extrusion layer 511 converts the pressure transmitted by the expansion assembly 3 into a radial force, which acts on the sealing ring 6 to enhance its fit with the outer wall of the boiler 5 and jointly maintain the pressure in the sealing area.

[0102] The extrusion layer 511 may be an elastic membrane structure such as a rubber membrane to adapt to pressure changes.

[0103] Finally, it should be pointed out that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways without departing from the scope of the present invention.

Claims

1. A detection mechanism, characterized in that: include, Housing (1); A rotating member (2), the rotating member (2) being rotatably connected to the interior of the housing (1), and the rotating member (2) rotating in a first direction or a second direction; The expansion assembly (3) includes a fixed portion (31) and a sound-generating member (32), wherein the sound-generating member (32) contacts the fixed portion (31) as the expansion assembly (3) deforms; The pressure regulating portion (4) comprises an elastic medium layer (41), a transmission member (42) and an extrusion block (43). The extrusion block (43) is connected to the transmission member (42) and rotates along the second direction with the transmission member (42). When the extrusion block (43) rotates, it squeezes the elastic medium layer (41). After being squeezed, the elastic medium layer (41) outputs pressure to the sealing area.

2. The detection mechanism according to claim 1, characterized in that: The fixing portion (31) is fixed in the housing (1) and is located below the rotating member (2).

3. The detection mechanism according to claim 2, characterized in that: The expansion component (3) is arranged outside the rotating part (2) and opposite to the fixed part (31), and the expansion component (3) contains a medium that expands when heated.

4. The detection mechanism according to claim 3, characterized in that: The transmission member (42) is rotationally connected to the housing (1), and the transmission member (42) is connected to the rotating member (2) via a one-way transmission mechanism (21). The one-way transmission mechanism (21) transmits power to drive the transmission member (42) to rotate when the rotating member (2) rotates in a second direction, and disconnects the transmission connection when the rotating member (2) rotates in a first direction.

5. The detection mechanism according to claim 4, characterized in that: The one-way transmission mechanism (21) comprises a ratchet groove (211) and a ratchet pawl (212). The ratchet grooves (211) are evenly distributed along the periphery of the rotating member (2). The inclined direction of the ratchet grooves (211) matches the contact surface of the ratchet pawl (212). The ratchet pawl (212) is embedded in the ratchet groove (211) when the rotating member (2) rotates in the second direction.

6. The detection mechanism according to claim 5, characterized in that: The extrusion block (43) is provided with an inclined surface (431) that gradually rises in a clockwise direction. The inclined surface (431) is in sliding contact with the elastic medium layer (41). The inclined surface (431) gradually increases the extrusion force on the elastic medium layer (41) when rotating.

7. A boiler air leakage detection device, characterized in that: A detection mechanism comprising any one of claims 1 to 6, and A boiler (5), wherein a groove (51) is provided at the connection between the shell (1) and the boiler (5); A sealing ring (6) is fixedly embedded in the groove (51); A gas delivery component (7), the gas delivery component (7) being connected to the middle portion of the housing (1); A driving member (8), wherein the driving member (8) is fixedly connected to the rotating member (2) via bolts; A locking mechanism (9) is slidably arranged outside the housing (1), and when the driving member (8) rotates to a predetermined position, the locking mechanism (9) is driven by force to limit the rotation of the driving member (8).

8. The boiler air leakage detection device according to claim 7, characterized in that: The locking mechanism (9) comprises: A sliding member (91), the sliding member (91) is fixed to the outside of the housing (1) and extends radially; A sliding rod (92), wherein the sliding rod (92) is slidably connected to the interior of the sliding member (91), one end of the sliding rod (92) is movable through the housing (1) and contacts the driving member (8), and a plurality of limiting holes are provided on the periphery of the driving member (8); A spring (93) is connected between the sliding member (91) and the sliding rod (92).

9. The boiler air leakage detection device according to claim 8, characterized in that: It also includes a drainage hole (11), which is opened on the shell (1). Gas enters the shell (1) through the drainage hole (11) and is absorbed by the expansion assembly (3).

10. The boiler air leakage detection device according to any one of claims 7 to 9, characterized in that: An extrusion layer (511) is provided inside the groove (51), and the extrusion layer (511) is in communication with the expansion assembly (3).

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