A casing head having a seal failure monitoring function

Abstract

The application belongs to the field of oilfield wellhead devices, and discloses a casing head with a sealing failure monitoring function, which comprises a casing head body and an inner pipe, the inner pipe is inserted into the casing head body, and further comprises: a plurality of mounting assemblies which are detachably connected to the inner cavity side wall of the casing head body and are distributed in a circumferential array with the central axis of the casing head body as the reference axis; a receiving plate which is threadedly connected to the bottom end of the plurality of mounting assemblies and is provided with a balance cavity in the inner cavity; a reminding assembly which is detachably connected to the inner cavity of the receiving plate; a silica gel pipe which is fixedly connected to the inner side wall of the inner pipe; and an air inlet pipe which is inserted into the inner cavity of the silica gel pipe at one end and is inserted into the inner cavity of the receiving plate at the other end. Once a small leakage occurs on the sealing surface, an audible and light alarm is triggered immediately, so that the staff can accurately know the fault in the first time without frequent inspection, the expansion of safety accidents caused by delayed discovery of leakage is effectively avoided, and the blindness of emergency repair and the sudden cost are significantly reduced.

Description

Technical Field

[0001] This invention belongs to the field of oilfield wellhead equipment, specifically a casing head with a sealing failure monitoring function. Background Technology

[0002] Wellhead equipment is the core equipment installed at the wellhead after oil and gas drilling, primarily used to control and regulate the production activities of oil, gas, and water wells. Its core functions include sealing the wellhead, suspending the tubing string, controlling fluid pressure and direction, and, as an important component of the well control system, ensuring the safe conduct of drilling operations. The casing head is one of the core components of the drilling wellhead equipment, mainly used to fix the wellhead structure and perform multiple functions. As a key hub connecting the downhole casing string to surface equipment, it not only suspends the weight of all casing layers except the surface casing, but also prevents pressure crosstalk by sealing the casing annular space, ensuring well control safety. During the drilling phase, the casing head provides the installation foundation for the blowout preventer (BOP), while during the production phase, it transitions to connecting the tubing head and the Christmas tree. Furthermore, its side opening function supports cementing, pressure balancing, and emergency fluid injection, significantly improving cementing quality and operational flexibility.

[0003] The invention patent with publication number CN117489291B provides a sleeve head with a compression sealing structure, including a main body and a sleeve hanger. The sleeve hanger is located inside the main body, and the lower end of the main body is fixedly connected to the upper end of the outer sleeve. The lower end of the sleeve hanger is fixedly connected to the upper end of the inner sleeve. It also includes a compression sealing structure and an upper flange. The compression sealing structure includes a disc spring, a sealing sleeve, and an upper pressure plate. The sealing sleeve and the upper pressure plate are both disposed in the annular space between the main body and the sleeve hanger. The upper end of the stud extends upward through the upper flange, and the lower end of the stud abuts against the upper surface of the upper pressure plate. There are at least two studs, and each stud is evenly distributed along the circumference. This invention features a compression sealing structure based on a sealing sleeve and a disc spring, which is not damaged during assembly and has a stronger pressure-bearing capacity. However, after prolonged use, oil and gas can damage the sealing device, affecting its sealing performance and causing oil and gas leaks. This necessitates immediate replacement, which is time-consuming, labor-intensive, and affects work efficiency. Summary of the Invention

[0004] To address the problems mentioned in the background section, the present invention provides a sleeve head with a sealing failure monitoring function.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a sleeve head with a sealing failure monitoring function, comprising a sleeve head body and an inner tube, wherein the inner tube is inserted into the sleeve head body, and further comprising: Multiple mounting components are detachably connected to the inner wall of the cannula head body, and the multiple mounting components are arranged in a circular array with the central axis of the cannula head body as the reference axis. The receiving plate is threaded to the bottom of multiple mounting components, and its inner cavity has a balancing chamber. The reminder component is detachably connected to the inner cavity of the receiving plate; Silicone tubing, which is fixedly connected to the inner wall of the inner tube; The air intake pipe has one end inserted into the inner cavity of the silicone tube and the other end inserted into the inner cavity of the receiving plate. The reminder component includes an alarm, a movable plate, and multiple springs. The movable plate is slidably connected to the inner cavity of the receiving plate, the alarm is detachably connected to the outer wall of the receiving plate, and the multiple springs are inserted between the alarm and the movable plate.

[0006] Preferably, the mounting assembly includes a mounting plate, a wedge, and multiple springs. The mounting plate is slidably connected to the inner wall of the sleeve head body. A movable cavity is formed in the mounting plate, and multiple fixing rods are fixedly connected in the movable cavity. The wedge is slidably connected to the outer wall of the multiple fixing rods. The multiple springs are nested on the outer side of the multiple fixing rods. One end of each spring is fixedly connected to the side wall of the movable cavity, and the other end of each spring is fixedly connected to the wedge.

[0007] Preferably, the sleeve head body includes an outer tube and a flange, the flange is fixedly connected to the outer side wall of the outer tube, and multiple insertion slots are opened on the inner side walls of the multiple outer tubes, and multiple mounting plates are respectively inserted into the multiple insertion slots.

[0008] Preferably, the movable plate has an end fixedly connected to the side of the warning device adjacent to it, and the warning device has a button on the side of the movable plate adjacent to it.

[0009] Preferably, the inner tube has multiple embedding grooves, the silicone tube is disposed inside the embedding grooves, the air inlet pipe passes through the embedding grooves, and the mounting plate has a through groove on the side adjacent to the embedding grooves.

[0010] Preferably, the movable plate divides the balance chamber into chamber one and chamber two, and the end of the air inlet pipe away from the silicone tube is inserted into chamber one.

[0011] Preferably, the longitudinal section of the end of the wedge that penetrates into the outer tube is trapezoidal, and the end of the wedge that penetrates into the insertion groove is cuboid.

[0012] Preferably, the inner wall of the mounting plate is provided with a threaded groove, and the top of the receiving plate is provided with a thread that matches the mounting plate.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Under normal operating conditions, the silicone tube is pressurized, causing the gas inside to push the movable plate through the air inlet pipe to compress the spring and keep the alarm in standby (silent) state. However, once a small leak occurs at the sealing surface, the external pressure on the silicone tube drops sharply and rebounds elastically. The gas in chamber 1 flows back rapidly, and the movable plate moves in the opposite direction under the preload of the spring, immediately triggering an audible and visual alarm. This closed-loop pneumatic control mechanism can shorten the response time of sealing failure to the second level, allowing staff to accurately detect the fault immediately without frequent inspections. This effectively avoids the escalation of safety accidents caused by delayed detection of leaks and significantly reduces the blindness and sudden costs of emergency repairs. 2. The quick-release self-locking structure formed by the wedge and spring 2 in the installation assembly enables flange-free assembly and disassembly of the internal support mechanism (receiving plate). When it is necessary to replace the sealing sleeve that has failed due to long-term use, the maintenance personnel only need to pull out the inner tube, and the spring 2 will automatically reset, causing the wedge to disengage from the insertion groove of the outer tube. At this time, the installation plate, including the monitoring element, along with the receiving plate, can be directly pulled out from the inner cavity of the casing head body. The entire process does not require disassembly of heavy flange bolts and external wellhead connection equipment, which not only increases the efficiency of replacing seals several times, but is also particularly suitable for harsh working conditions with limited operating space, such as offshore platforms or high-altitude wellheads, greatly improving the convenience and timeliness of oilfield on-site maintenance operations. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall structure of the sleeve head body of the present invention; Figure 3 This is a schematic diagram of the overall structure of the inner tube of the present invention; Figure 4 This is a schematic cross-sectional view of the overall structure of the present invention; Figure 5 This is a schematic diagram of the installation component structure of the present invention. Figure 1 ; Figure 6 This is a schematic diagram of the installation component structure of the present invention. Figure 2 ; Figure 7 This is a schematic diagram of the cross-sectional structure of the receiving plate of the present invention; Figure 8 for Figure 4 A magnified view of point a shown below.

[0015] In the picture: 100. Sleeve head body; 110. Outer tube; 120. Flange; 130. Insertion groove; 200. Inner tube; 210. Embedded groove; 300. Mounting assembly; 310. Mounting plate; 320. Wedge; 330. Spring II; 340. Movable cavity; 350. Fixing rod; 360. Through groove; 400. Receiving plate; 411. Chamber I; 412. Chamber II; 500. Reminder assembly; 510. Warning device; 520. Movable plate; 530. Spring I; 540. End; 550. Button; 600. Silicone tube; 700. Air inlet pipe. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] like Figures 1 to 8 As shown, the present invention provides a sleeve head with a sealing failure monitoring function, including a sleeve head body 100 and an inner tube 200, the inner tube 200 being inserted into the sleeve head body 100, and further including: Multiple mounting components 300 are detachably connected to the inner wall of the sleeve head body 100, and the multiple mounting components 300 are arranged in a circular array with the central axis of the sleeve head body 100 as the reference axis. The receiving plate 400 is threaded to the bottom of multiple mounting components 300, and its inner cavity has a balancing cavity 410. The reminder component 500 is detachably connected to the inner cavity of the receiving plate 400; Silicone tube 600 is fixedly connected to the inner wall of inner tube 200; The intake pipe 700 has one end inserted into the inner cavity of the silicone tube 600 and the other end inserted into the inner cavity of the receiving plate 400. It should be noted that, firstly, multiple mounting components 300 are installed at the bottom of the sleeve head body 100, and then the inner tube 200 is installed. During the installation of the inner tube 200, the inner tube 200 will squeeze the silicone tube 600, so that the gas in the silicone tube 600 enters the warning component 500 through the air inlet pipe 700. When the seal leaks, the pressure on the silicone tube 600 will change, thereby acting on the warning component 500 and causing the warning component 500 to warn the staff. The reminder component 500 includes an alarm 510, a movable plate 520, and multiple springs 530. The movable plate 520 is slidably connected to the inner cavity of the receiving plate 400, the alarm 510 is detachably connected to the outer wall of the receiving plate 400, and the multiple springs 530 are inserted between the alarm 510 and the movable plate 520. It should be noted that the reminder component 500, as the final response unit for seal failure, works as follows: When the internal seal of the sleeve head fails, causing abnormal pressure, the deformation of the silicone tube 600 will decrease, allowing air in the inner cavity of the receiving plate 400 to return to the silicone tube 600. At this time, the movable plate 520 will move away from the alarm 510 under the action of multiple springs 530, thus stopping the alarm 510 from working. The springs 530 are made of corrosion-resistant stainless steel, and their preload is calibrated according to the rated sealing pressure to ensure that the movable plate 520 and the alarm button 550 are kept at a safe distance under normal operating conditions (i.e., when the seal is not failed, the silicone tube 600 is in a deformed state when liquid passes through the inner tube 200, which causes the movable plate 520 to adhere to the alarm 510; when the seal fails, the pressure on the silicone tube 600 will suddenly decrease). The force exerted by spring 530 on movable plate 520 is greater than the air pressure on movable plate 520, causing movable plate 520 to shift, thereby allowing air to return to silicone tube 600 and separating movable plate 520 from alarm 510. Alarm 510 is an audible and visual alarm module with a built-in battery and self-test circuit. When end 540 of movable plate 520 touches button 550, alarm 510 remains silent until it resets due to seal failure or cessation of operation. At this time, alarm 510 will be triggered, causing alarm 510 to continuously emit a buzzer and red light. Wear-resistant sealing rings are embedded on the edge of movable plate 520 to ensure smooth sliding and prevent gas leakage from affecting triggering accuracy. At the same time, multiple springs 530 are evenly distributed between alarm 510 and movable plate 520, with four springs arranged in a rectangular pattern to balance the force on movable plate 520 and prevent tilting and jamming.

[0018] The mounting assembly 300 includes a mounting plate 310, a wedge 320, and multiple springs 330. The mounting plate 310 is slidably connected to the inner wall of the sleeve head body 100. A movable cavity 340 is opened in the mounting plate 310. Multiple fixing rods 350 are fixedly connected in the movable cavity 340. The wedge 320 is slidably connected to the outer wall of the multiple fixing rods 350. The multiple springs 330 are nested on the outer side of the multiple fixing rods 350. One end of the spring 330 is fixedly connected to the side wall of the movable cavity 340, and the other end of the spring 330 is fixedly connected to the wedge 320. It should be noted that the installation component 300 not only serves the function of supporting and positioning the receiving plate 400, but also enables quick assembly and disassembly through the self-locking structure of the wedge block 320. Specifically, the vertical wall of the mounting plate 310 fits against the inner wall of the sleeve head body 100, and the bottom of the horizontal wall has a threaded groove for connecting the receiving plate 400. The wedge 320 is located in the movable cavity 340 of the mounting plate 310 and slides axially along the fixing rod 350. The fixing rod 350 consists of two parallel stainless steel round rods that pass through the guide hole on the wedge 320 to ensure that the movement direction of the wedge 320 is perpendicular to the axis of the sleeve head. The second spring 330 is always in a compressed state and pushes the wedge 320 outward through the inner tube 200, so that the wedge 320 extends out of the opening on the side wall of the mounting plate 310 and is inserted into the insertion groove 130 of the sleeve head body 100, thereby achieving axial locking of the mounting plate 310. When disassembly is required, only the inner tube 200 needs to be removed to allow the second spring 330 to return to its original position, and the mounting plate 310 can be pulled out as a whole without disassembling the flange 120, which greatly facilitates maintenance operations.

[0019] The sleeve head body 100 includes an outer tube 110 and a flange 120. The flange 120 is fixedly connected to the outer wall of the outer tube 110. Multiple insertion slots 130 are opened on the inner side walls of multiple outer tubes 110, and multiple mounting plates 310 are respectively inserted into multiple insertion slots 130. It should be noted that the outer tube 110 is a high-strength alloy steel forging, with an annular space between its inner diameter and the outer diameter of the inner tube 200 to accommodate sealing elements and monitoring channels; the flange 120 is an integral annular structure, welded or integrally forged on the outside of the outer tube 110, with bolt holes distributed on it for connection with wellhead equipment; the insertion slot 130 is a rectangular blind hole extending along the axial direction of the outer tube 110, the number of which is the same as that of the mounting assembly 300 (usually four or six), and is evenly distributed with the central axis of the inner tube 200 as the axis of symmetry. The width and depth of each insertion slot 130 match the protruding part of the wedge 320 on the mounting plate 310, with a tolerance of H7 / f6, which ensures smooth insertion and avoids excessive clearance causing shaking; the bottom of the insertion slot 130 is provided with a sloping guide section, which facilitates the automatic sliding of the wedge 320 into the locking position under the push of the spring 330. At the same time, the inner wall of the insertion slot 130 is hardened (carburized or chrome plated) to improve wear resistance and adapt to repeated disassembly and assembly conditions.

[0020] An end 540 is fixedly connected to the side of the movable plate 520 adjacent to the warning device 510, and a button 550 is provided on the side of the warning device 510 adjacent to the movable plate 520. It should be noted that the end 540 is made of conductive metal (such as copper alloy) and is truncated cone-shaped. Its small end face is directly opposite the button 550 of the alarm 510, and the center of the end 540 coincides with the axis of the button 550 to ensure reliable contact. The button 550 is a tactile micro switch with a self-resetting function. Its trigger stroke is only 0.5mm to 1.0mm, and the pressing force is about 2N, so that the alarm 510 can be activated by a small displacement of the movable plate 520. The surface of the end 540 is polished to reduce friction with the inner wall of the receiving plate 400. At the same time, an O-ring is provided at the root of the end 540 to prevent high-pressure gas from entering the mounting cavity of the alarm 510 from the connection gap between the end 540 and the movable plate 520. The alarm 510 is fixed to the mounting base on the outside of the receiving plate 400 by threads or clips. The mounting base is provided with a sealing gasket to prevent external moisture or impurities from entering the inner cavity of the receiving plate 400.

[0021] Multiple embedding slots 210 are provided inside the inner tube 200. The silicone tube 600 is disposed inside the embedding slot 210. The air inlet pipe 700 passes through the embedding slot 210. A through slot 360 is provided on the side of the mounting plate 310 adjacent to the embedding slot 210. It should be noted that the embedded groove 210 is an annular groove or axial long groove on the outer wall of the inner tube 200, with a depth slightly larger than the outer diameter of the silicone tube 600. It is used to accommodate and protect the silicone tube 600, preventing it from deforming under pressure during assembly of the inner tube 200. The silicone tube 600 is made of a special silicone rubber material that is resistant to high temperatures, oil, and hydrogen sulfide. Its inner diameter forms an interference fit with the outer diameter of the air inlet pipe 700 (interference amount is 0.2-0.3mm) to ensure gas sealing. Simultaneously, the silicone tube 600 itself is elastic, so that even a small leak at the sealing surface will be prevented from occurring. The leaked gas first accumulates around the silicone tube 600 and is transmitted through the air inlet pipe 700. The air inlet pipe 700 is a stainless steel capillary tube, one end of which is inserted into the inner cavity of the silicone tube 600 and fixed, and the other end passes through the embedded groove 210 and the through groove 360 ​​on the mounting plate 310, and finally extends into the chamber 411 of the receiving plate 400. The through groove 360 ​​on the mounting plate 310 is oblong, allowing the air inlet pipe 700 a certain amount of movement when the mounting plate 310 is removed, and the through groove 360 ​​is embedded with a rubber sleeve to prevent the air inlet pipe 700 from being scratched by sharp metal edges.

[0022] The movable plate 520 divides the balance chamber 410 into chamber one 411 and chamber two 412. The end of the air inlet pipe 700 away from the silicone tube 600 is inserted into chamber one 411. It should be noted that the balance chamber 410 of the receiving plate 400 is divided into two independent and sealed chambers by the movable plate 520: Chamber 1 411 is a pressure sensing chamber, connected to the air inlet pipe 700, receiving leakage gas pressure from the silicone tube 600; Chamber 2 412 is an atmospheric balance chamber, which is connected to the outside atmosphere through the vent hole on the side wall of the receiving plate 400, ensuring that the back side of the movable plate 520 is always at normal pressure, preventing the accumulation of air pressure in Chamber 2 412 from affecting the triggering sensitivity; the movable plate 520 divides Chamber 1 410 into two independent and sealed chambers. 1. It is isolated from the second chamber 412 to ensure that the pressure change in the first chamber 411 can be accurately reflected in the pressure difference on both sides of the movable plate 520. When a leak occurs, the pressure in the first chamber 411 increases, pushing the movable plate 520 towards the second chamber 412 (i.e., towards the alarm 510), compressing the first spring 530 until the end 540 touches the button 550. The volume of the first chamber 411 is designed to be small enough (about 5 to 10 mL) so that a small leak can produce a significant pressure rise, thereby improving the monitoring sensitivity.

[0023] The longitudinal section of the end of the wedge 320 that is inserted into the outer tube 110 is trapezoidal, and the end of the wedge 320 that is inserted into the insertion groove 130 is cuboid. It should be noted that the special cross-sectional design of the wedge 320 takes into account both axial self-locking and radial limiting functions: its longitudinal cross-section is trapezoidal (i.e., when viewed radially along the outer tube 110, the end of the wedge 320 is a trapezoid that is wider at the top and narrower at the bottom) so that when pushed by the spring 330, the trapezoidal inclined surface cooperates with the inclined surface at the bottom of the insertion groove 130 to produce a wedge-tightening effect, which can counteract the axial component force generated by the vibration of the sleeve head and prevent the mounting plate 310 from accidentally loosening; and its end that penetrates into the insertion groove 130 (i.e., the outermost section of the wedge 320) is a cuboid, which forms a surface contact with the rectangular inner wall of the insertion groove 130, restricting the circumferential rotation of the mounting plate 310 around the axis of the inner tube 200, ensuring that the multiple mounting components 300 always maintain the correct phase; the wedge 320 is made of precipitation hardening stainless steel with a hardness of HRC38-42, and the angle of the trapezoidal inclined surface is designed to be 15-20 degrees, which ensures self-locking while also facilitating manual pressing to overcome friction and retraction, thus enabling repeated disassembly and assembly.

[0024] The inner wall of the mounting plate 310 is provided with a threaded groove, which is horizontally arranged. The top of the receiving plate 400 is provided with a thread that matches the mounting plate 310. It should be noted that the threaded groove on the inner wall of the mounting plate 310 is an internal thread, and the top of the receiving plate 400 is provided with an external thread. The two together form a threaded connection pair. The thread specification is metric coarse thread (such as M121.75), with complete tooth profile and a thread length of not less than 15mm to ensure sufficient connection strength. The receiving plate 400 is a ring-shaped plate structure with multiple external thread segments on its top circumference, which are screwed into the threaded grooves of each mounting plate 310 one by one. By simultaneously screwing the receiving plate 400, its level can be finely adjusted, thereby ensuring the alignment accuracy of the movable plate 520 and the warning button 550 of the 510. The thread surface is coated with a molybdenum disulfide lubricating coating to reduce the coefficient of friction and prevent corrosion and seizing after long-term use. In addition, the bottom of the receiving plate 400 is provided with a bayonet for installing tools (such as hook wrenches) to facilitate the application of torque during on-site assembly and ensure that the threaded connection is tight and reliable. At the same time, anti-loosening washers can be installed between the threaded pairs to adapt to the strong vibration environment of wellhead operations.

[0025] The above solution will be adopted: Working principle and usage process of this invention: First, the spring 330 in the mounting assembly 300 pushes the wedge 320 into the insertion slot 130 of the outer tube 110. The wedge-tightening effect generated by the trapezoidal inclined surface of the wedge 320 and the inclined surface of the slot bottom achieves the self-locking fixation of the mounting plate 310. At the same time, the cuboid end of the wedge 320 and the surface contact with the rectangular slot wall restrict circumferential rotation, thereby stably supporting the receiving plate 400 in the sleeve head. Then, the inner tube 200 is installed. When liquid flows in the inner tube 200, the liquid compresses the silicone tube 600 embedded in the slot 210, causing the gas in the silicone tube 600 to enter the chamber 411 of the receiving plate 400 through the air inlet pipe 700. The air pressure in the chamber 411 increases and pushes the movable plate 520 to compress the spring 530, thus tightening the end 540 of the movable plate 520. Press and hold the button 550 of the alarm 510 to keep the circuit in a closed (silent) monitoring state. Once a leak occurs at the sealing surface, the external pressure on the silicone tube 600 drops sharply and rebounds elastically. The gas in chamber 411 flows back to the silicone tube 600 through the air inlet pipe 700, causing the air pressure in chamber 411 to drop rapidly. At this time, the preload of spring 530 is greater than the air pressure thrust, pushing the movable plate 520 to move in the opposite direction, causing the end 540 to disengage from the button 550. The circuit state is switched, thereby triggering the alarm 510 to emit a continuous audible and visual alarm. At the same time, when maintenance is required, simply remove the inner tube 200 to restore the spring 330 to its original state, and the wedge 320 can be removed from the insertion slot 130. The mounting plate 310 can then be pulled out as a whole without disassembling the flange 120.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "include," "contain," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0027] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sleeve head with a sealing failure monitoring function, comprising a sleeve head body (100) and an inner tube (200), wherein the inner tube (200) is inserted inside the sleeve head body (100), characterized in that: Also includes: Multiple mounting components (300) are detachably connected to the inner wall of the sleeve head body (100), and the multiple mounting components (300) are arranged in a circular array with the central axis of the sleeve head body (100) as the reference axis. The receiving plate (400) is threaded to the bottom of multiple mounting components (300), and its inner cavity has a balancing cavity (410). A reminder component (500) is detachably connected to the inner cavity of the receiving plate (400); Silicone tube (600), which is fixedly connected to the inner wall of inner tube (200); The intake pipe (700) has one end inserted into the inner cavity of the silicone tube (600) and the other end inserted into the inner cavity of the receiving plate (400); The reminder component (500) includes a warning device (510), a movable plate (520), and multiple springs (530). The movable plate (520) is slidably connected to the inner cavity of the receiving plate (400), the warning device (510) is detachably connected to the outer wall of the receiving plate (400), and the multiple springs (530) are inserted between the warning device (510) and the movable plate (520).

2. The bushing head with sealing failure monitoring function according to claim 1, characterized in that: The mounting assembly (300) includes a mounting plate (310), a wedge (320), and multiple springs (330). The mounting plate (310) is slidably connected to the inner wall of the sleeve head body (100). A movable cavity (340) is provided in the mounting plate (310). Multiple fixing rods (350) are fixedly connected in the movable cavity (340). The wedge (320) is slidably connected to the outer wall of the multiple fixing rods (350). Multiple springs (330) are nested on the outer side of the multiple fixing rods (350). One end of each spring (330) is fixedly connected to the side wall of the movable cavity (340), and the other end of each spring (330) is fixedly connected to the wedge (320).

3. The bushing head with sealing failure monitoring function according to claim 2, characterized in that: The sleeve head body (100) includes an outer tube (110) and a flange (120). The flange (120) is fixedly connected to the outer wall of the outer tube (110). Multiple insertion slots (130) are opened on the inner sidewalls of the multiple outer tubes (110). Multiple mounting plates (310) are respectively inserted into the multiple insertion slots (130).

4. The bushing head with sealing failure monitoring function according to claim 3, characterized in that: The movable plate (520) is fixedly connected to an end (540) on the side adjacent to the warning device (510), and the warning device (510) is provided with a button (550) on the side adjacent to the movable plate (520).

5. The bushing head with sealing failure monitoring function according to claim 4, characterized in that: The inner tube (200) has multiple embedded grooves (210), the silicone tube (600) is located inside the embedded groove (210), the air inlet pipe (700) passes through the embedded groove (210), and the mounting plate (310) has a through groove (360) on the side adjacent to the embedded groove (210).

6. The bushing head with sealing failure monitoring function according to claim 5, characterized in that: The movable plate (520) divides the balance chamber (410) into chamber one (411) and chamber two (412), and the end of the air inlet pipe (700) away from the silicone tube (600) is inserted into chamber one (411).

7. The bushing head with sealing failure monitoring function according to claim 6, characterized in that: The longitudinal section of the wedge (320) inserted into the outer tube (110) is trapezoidal, and the end of the wedge (320) inserted into the insertion groove (130) is cuboid.

8. The bushing head with sealing failure monitoring function according to claim 7, characterized in that: The inner wall of the mounting plate (310) is provided with a threaded groove, and the top of the receiving plate (400) is provided with a thread that matches the mounting plate (310).

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