Water and gas supply pipeline valve with leakage alarm function

Abstract

The invention relates to the technical field of pipeline valves, in particular to a water and gas supply pipeline valve with a leakage alarming function, which comprises a main body assembly and a valve body, the outer wall of the valve body is sleeved with a sealing shell, and the inner wall of the sealing shell is provided with an inner cavity; the warning assembly comprises a mounting shell, a rotating ring is arranged in the mounting shell, a connector is arranged on the outer wall of the rotating ring, and the connector is connected with a connecting pipe arranged on the outer wall of the sealing shell and communicates with the inner cavity; the device can accurately adapt to water and gas double-medium leakage scenes, graded alarm is achieved, when a water medium leaks, the spiral flowing channel on the inner wall of the rotating ring drives the rotating ring to rotate, the medium is slowly conveyed to the containing cavity, the corrugated pipe is pushed to trigger alarm after the medium is accumulated to a certain amount, and instantaneous pressure fluctuation false alarm is avoided; when the gas medium leaks, gas can directly enter the containing cavity through the flowing channel due to light weight and fast diffusion, the corrugated pipe is fast pushed to give an alarm, and the problem that leakage identification of media with different physical characteristics is not accurate is solved.

Description

Technical Field

[0001] This invention relates to the field of pipeline valve technology, and in particular to water and gas supply pipeline valves with leakage alarms. Background Technology

[0002] Water and gas supply pipelines, as core components of urban infrastructure, bear the basic energy supply tasks for residents' lives and industrial production. Their operational safety is directly related to resource waste, environmental safety, and the protection of personal safety and property. As pipeline networks extend to remote outdoor areas and unattended scenarios such as underground manholes, higher requirements are placed on the "power supply adaptability" and "environmental tolerance" of pipeline valves. However, current leakage alarm valves in the industry mostly focus on a single medium, providing basic protection only for water or gas, without fully considering the essential differences in the physical properties of water and gas, nor designing differentiated protection mechanisms for different risk levels of "slow leakage" and "fast leakage," thus limiting their applicability in complex operating conditions.

[0003] Existing leakage alarm valves have several problems: First, they lack adaptability to both water and gas media. The triggering structure is not designed to account for the differences in physical properties between water and gas, and a fixed pressure threshold triggering logic is used uniformly. This results in delayed alarms during slow water leaks due to slow media delivery, and false triggers during rapid gas leaks due to excessive diffusion. Second, they lack tiered alarm and pressure relief functions. Slow and fast leaks trigger only a single alarm signal, making it difficult for staff to quickly assess the urgency. Furthermore, during fast leaks, the pressure relief path is often a single path, leading to insufficient pressure relief efficiency during sudden pressure increases, which can easily damage the sealing shell and mounting shell due to pressure overload. Third, they have a high false alarm rate. In water media scenarios, they are easily triggered by instantaneous pressure fluctuations in the pipeline. In gas media scenarios, there is no targeted diffusion buffer design, further exacerbating the false alarm problem and increasing maintenance costs. Summary of the Invention

[0004] In view of the problems existing in the prior art, the present invention is proposed.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a water and gas supply pipeline valve with leakage alarm, which includes a main component, including a valve body, wherein a sealing shell is sleeved on the outer wall of the valve body and an inner cavity is provided on the inner wall of the sealing shell; The warning component includes a mounting housing, wherein a rotating ring is provided inside the mounting housing and a connector is provided on the outer wall of the rotating ring, and the connector is connected to a connecting pipe provided on the outer wall of the sealing housing and communicates with the inner cavity; The sealing shell end is also provided with a pressure relief component, the pressure relief component includes a pressure relief shell, the end of the pressure relief shell is provided with a connecting shell and a first inner shell is provided inside the connecting shell, the inner wall of the first inner shell is also provided with a second inner shell, and the second inner shell is adhered to the inner wall of the first inner shell by the influence of a second elastic element provided on the inner wall of the pressure relief shell.

[0006] As a preferred embodiment of the water and gas supply pipeline valve for leakage alarm described in this invention, wherein: the inner wall of the mounting housing is provided with a receiving cavity and the rotating ring is disposed on the inner wall of the receiving cavity, the inner wall of the rotating ring is provided with a flow channel and the flow channel is connected to the connecting pipe through a connector.

[0007] As a preferred embodiment of the water and gas supply pipeline valve for leakage alarm described in this invention, wherein: a warning shell is provided on the outer wall of the mounting housing, and a bellows is fixed on the inner wall of the accommodating cavity, with the end of the bellows extending to the inner wall of the warning shell.

[0008] As a preferred embodiment of the water and gas supply pipeline valve for leakage alarm according to the present invention, wherein: the end of the warning shell is further provided with a first elastic element and the other end of the first elastic element is fixed to the inner wall of the warning shell, and the inner wall of the warning shell is further provided with an alarm and the alarm is located at the end of the bellows.

[0009] As a preferred embodiment of the water and gas supply pipeline valve for leakage alarm described in this invention, wherein: the pressure relief shell is installed at the end of the sealing shell and a pressure relief cavity is provided inside the pressure relief shell; the first inner shell is fixed to the inner wall of the pressure relief shell and the first through hole opened at the end of the first inner shell is connected to the pressure relief cavity; and the second inner shell is installed on the inner wall of the first inner shell and moves.

[0010] As a preferred embodiment of the water and gas supply pipeline valve for leakage alarm described in this invention, wherein: a limiting post is provided on the inner wall of the second inner shell and a disc is provided at the end of the limiting post, and a third elastic element is provided at the other end of the limiting post.

[0011] As a preferred embodiment of the water and gas supply pipeline valve for leakage alarm described in this invention, wherein: the other end of the third elastic element is located on the inner wall of the cavity opened at the end of the second inner shell for pulling the limiting post so that the end face of the disc fits against the end of the second inner shell.

[0012] As a preferred embodiment of the water and gas supply pipeline valve for leakage alarm described in this invention, wherein: the end of the second inner shell is attached to the inner wall of the first inner shell and is provided with a connecting cavity, the inner wall of the second inner shell is provided with an array of through grooves, and the connecting cavity is connected to the cavity provided at the end of the second inner shell through the through grooves.

[0013] As a preferred embodiment of the water and gas supply pipeline valve for leakage alarm described in this invention, the second inner shell end is provided with a flow cavity and the outer wall of the flow cavity is arrayed with second through holes, and the flow cavity is connected to the connecting cavity through the second through holes.

[0014] As a preferred embodiment of the water and gas supply pipeline valve for leakage alarm described in this invention, wherein: a column is provided at the axial center of the inner wall of the connecting shell and the column is positioned opposite to the limiting column; the second elastic element is sleeved on the outer wall of the column and its other end is connected to the end of the second inner shell.

[0015] The beneficial effects of this invention are as follows: This application can accurately adapt to water and gas dual-medium leakage scenarios, realizing graded alarms. When water leaks, the spiral flow channel on the inner wall of the rotating ring drives the rotating ring to rotate, slowly conveying the medium to the receiving cavity. After accumulating to a certain amount, it pushes the bellows to trigger the alarm, avoiding false alarms due to instantaneous pressure fluctuations. When gas leaks, because gas is lightweight and diffuses quickly, it can directly enter the receiving cavity through the flow channel, quickly pushing the bellows to trigger the alarm, solving the problem of inaccurate identification of leaks of media with different physical characteristics. It also has a graded pressure relief function. When leakage is imminent, the initial increase in medium pressure will push the second inner shell upward to form a preliminary pressure relief channel. As the pressure further increases, it will push the limiting post downward to open the accelerated pressure relief channel, ensuring rapid pressure relief in case of pressure overload and avoiding damage to the sealing shell and mounting shell. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the water and gas supply pipeline valve for the leakage alarm of this invention. Figure 2 This is a side sectional view of the sealing shell in this invention; Figure 3 This is a schematic diagram of the internal structure of the mounting shell in this invention; Figure 4 This is a schematic diagram of the flow channel structure in this invention; Figure 5 This is a side sectional view of the connecting shell in this invention; Figure 6 This is a schematic diagram of the internal structure of the first built-in shell in this invention; Figure 7 This is an exploded view of the internal structure of the second built-in shell in this invention.

[0018] Reference numerals: 100, main component; 101, valve body; 102, sealing shell; 103, inner cavity; 200. Warning component; 201. Connecting pipe; 202. Mounting housing; 203. Receiving cavity; 204. Rotary ring; 2041. Flow channel; 2042. Connector; 205. Warning housing; 2051. Bellows; 2052. First elastic element; 2053. Warning device; 301, Pressure relief shell; 3011, Pressure relief cavity; 3012, Pressure relief pipe; 302, Connecting shell; 3021, Column; 3022, Second elastic element; 303, First inner shell; 3031, First through hole; 3032, Connecting cavity; 304, Second inner shell; 3041, Through groove; 3042, Second through hole; 3043, Cavity; 3044, Flow cavity; 305, Limiting post; 3051, Disc; 3052, Third elastic element. Detailed Implementation

[0019] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0020] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0021] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments. Example 1

[0022] Reference Figures 1-5 This is the first embodiment of the present invention, which provides a water and gas supply pipeline valve with leakage alarm.

[0023] Specifically, the main component 100 includes a valve body 101, with a sealing shell 102 sleeved on the outer wall of the valve body 101 and an inner cavity 103 provided on the inner wall of the sealing shell 102. The warning component 200 includes a mounting housing 202, a rotating ring 204 is provided inside the mounting housing 202 and a connector 2042 is provided on the outer wall of the rotating ring 204. The connector 2042 is connected to a connecting pipe 201 provided on the outer wall of the sealing housing 102 and communicates with the inner cavity 103. The end of the sealing shell 102 is also provided with a pressure relief component, which includes a pressure relief shell 301. The end of the pressure relief shell 301 is provided with a connecting shell 302 and a first inner shell 303 is provided inside the connecting shell 302. The inner wall of the first inner shell 303 is also provided with a second inner shell 304, and the second inner shell 304 is adhered to the inner wall of the first inner shell 303 by the influence of the second elastic member 3022 provided on the inner wall of the pressure relief shell 301.

[0024] In this process, the valve body 101 normally transports the medium, which can be water or gas. When there is no leakage, no medium remains in the inner cavity 103 of the sealing shell 102. The rotating ring 204 remains stationary inside the mounting shell 202. In the pressure relief component, the second inner shell 304 is tightly fitted to the inner wall of the first inner shell 303 by the elastic force of the second elastic element 3022, and all components in the device are in a stationary state.

[0025] When a slow leakage occurs, assuming water is used as the medium, a slow leakage occurs inside the valve body 101. The leaked water seeps into the inner cavity 103 of the sealing shell 102, and water gradually accumulates inside the inner cavity 103.

[0026] Water in the inner cavity 103 flows into the mounting housing 202 of the warning component 200 through the connecting pipe 201 on the outer wall of the sealing housing 102. The connector 2042 of the rotating ring 204 is connected to the connecting pipe 201, so the leaked medium then enters the interior of the rotating ring 204.

[0027] Water flows from the center to the outside inside the flow channel 2041 of the rotating ring 204. The water flow drives the rotating ring 204 to rotate slowly inside the mounting shell 202. During the rotation, the rotating ring 204 continuously delivers water to the mounting shell 202, where the water gradually accumulates.

[0028] When the water collected inside the housing 202 reaches a certain volume or pressure, it pushes the subsequent bellows 2051, causing the bellows 2051 to deform, thereby triggering an alarm and realizing the identification and prompting of slow leakage.

[0029] When a rapid leakage occurs, the valve body 101 experiences severe leakage, and a large amount of medium rapidly flows into the inner cavity 103 of the sealing shell 102, causing the medium pressure in the inner cavity 103 to rise sharply.

[0030] At this time, the medium in the inner cavity 103 still enters the interior of the rotating ring 204 through the connecting pipe 201, and enters the accommodating cavity 203 through the flow channel 2041. When the medium leaked from the valve body 101 is different, the processing steps are also different. When the leaked medium is gas, the gas directly enters the accommodating cavity 203 through the flow channel 2041 and pushes the bellows 2051 to move, thereby triggering the alarm. At this time, the leaked medium fills the interior of the accommodating cavity 203. After the alarm is triggered, the remaining leaked medium will enter the connecting shell 302 through the inner cavity 103.

[0031] When the leaked medium is liquid, the liquid flows through the inside of the rotating ring 204, then through the flow channel 2041 before entering the inside of the accommodating cavity 203. After accumulating to a certain amount inside the accommodating cavity 203, the movement alarm of the bellows 2051 is triggered. However, the rotation speed of the rotating ring 204 is limited, and the accumulation speed inside the accommodating cavity 203 is much lower than the accumulation speed in the inner cavity 103. Therefore, the medium inside needs to be depressurized through the pressure relief component inside the connecting shell 302 before triggering the alarm.

[0032] When the high-pressure medium in the inner cavity 103 acts on the inside of the connecting shell 302 of the pressure relief component, its pressure overcomes the pre-tightening force of the second elastic element 3022 on the inner wall of the pressure relief shell 301, pushing the second inner shell 304 to move away from the first inner shell 303, so that a flow gap is formed between the first inner shell 303 and the second inner shell 304.

[0033] The medium enters the pressure relief chamber 3011 inside the pressure relief shell 301 through the aforementioned flow gap, and is finally discharged to the outside through the pressure relief pipe 3012 connected to the outer wall of the pressure relief shell 301, thereby achieving rapid pressure relief and preventing damage to the sealing shell 102 and the mounting shell 202 due to pressure overload. Example 2

[0034] Reference Figures 2-4 This is the second embodiment of the present invention, which is implemented based on the previous embodiment.

[0035] Specifically, the inner wall of the mounting shell 202 has a receiving cavity 203 and a rotating ring 204 is located on the inner wall of the receiving cavity 203. The inner wall of the rotating ring 204 has a flow channel 2041 and the flow channel 2041 is connected to the connecting pipe 201 through the connector 2042.

[0036] The mounting shell 202 is fixed to the outside of the connecting pipe 201, while the inner rotating ring 204 is installed inside the rotating ring 204 through the connection of the connector 2042 to the connecting pipe 201. The connector 2042 can rotate at the end of the connecting pipe 201, thereby enabling the rotating ring 204 to rotate inside the accommodating cavity 203.

[0037] The flow channel 2041 is in a planar spiral shape inside the rotating ring 204, with a uniform pitch and extending from the center to the outer ring, so that after the medium enters the rotating ring 204 from the connector 2042, it enters the accommodating cavity 203 through the flow channel 2041.

[0038] Preferably, a warning shell 205 is provided on the outer wall of the mounting shell 202, and a corrugated tube 2051 is fixed on the inner wall of the accommodating cavity 203, with the end of the corrugated tube 2051 extending to the inner wall of the warning shell 205.

[0039] The warning shell 205 and the mounting shell 202 are a whole unit and are located outside the mounting shell 202. The interior is connected to the accommodating cavity 203. The bellows 2051 is fixedly installed inside the accommodating cavity 203 and its end extends to the inner wall of the warning shell 205. The bellows 2051 isolates the warning shell 205 from the accommodating cavity 203.

[0040] Preferably, the end of the warning shell 205 is further provided with a first elastic element 2052 and the other end of the first elastic element 2052 is fixed to the inner wall of the warning shell 205. The inner wall of the warning shell 205 is further provided with an alarm 2053 and the alarm 2053 is located at the end of the bellows 2051.

[0041] The first elastic element 2052 is fixed inside the warning shell 205, and its other end is attached to the end of the bellows 2051 to push the bellows 2051 so that it is in a contracted state in the initial state.

[0042] The alarm 2053 is located inside the alarm housing 205 and below the outer wall of the bellows 2051. In the initial state, the bellows 2051 is not in contact with the alarm 2053. When the bellows 2051 is pushed by the medium inside the accommodating cavity 203 and moves, the bellows 2051 extends inside the alarm housing 205 and touches the alarm 2053. At this time, the alarm 2053 triggers an alarm and indicates that the valve at the current position is leaking.

[0043] In summary, during use, in the initial state, the first elastic element 2052 applies a continuous thrust to the bellows 2051, keeping the bellows 2051 in a contracted state. Its end does not contact the warning device 2053 on the inner wall of the warning shell 205. The rotating ring 204 is stationary on the inner wall of the accommodating cavity 203. The connector 2042 and the end of the connecting pipe 201 do not rotate relative to each other. Furthermore, there is no leakage medium remaining in the accommodating cavity 203 and the flow channel 2041, and the warning device 2053 is not triggered.

[0044] When a water leak occurs, the water, due to its weight and fluidity, needs to flow outward through the spiral flow channel 2041 opened on the inner wall of the rotating ring 204. When the water flows through the flow channel 2041, it drives the rotating ring 204 to rotate and then slowly enters the accommodating cavity 203. When it accumulates to a certain capacity, an alarm is triggered.

[0045] The flow channel 2041 inside the rotating ring 204 is like a series of spiral patterns that extend outwards. The patterns start from the center of the rotating ring 204 and extend evenly to the outer ring of the rotating ring 204. The distance between each spiral pattern is exactly the same, which is equivalent to laying a spiral track for the water flow from the center to the outer ring.

[0046] When water enters the flow channel 2041, it forms a continuous water column within the track. Because the track radius increases outwards, the pressure of the water column is lower on the inner side and higher on the outer side. This pressure difference within the flow channel 2041 generates a continuous thrust on the inner wall of the rotating ring 204. Since the connector 2042 can rotate freely at the end of the connecting pipe 201, the rotating ring 204 rotates smoothly along the direction of the spiral track within the accommodating cavity 203.

[0047] When the medium enters the accommodating cavity 203 and pushes the rotating ring 204 to rotate, the water in the flow channel 2041 will flow out from the outer ring of the rotating ring 204 along the track and gradually converge into the interior of the accommodating cavity 203. As the water in the accommodating cavity 203 continues to accumulate, the water pressure will gradually increase, eventually overcoming the thrust of the first elastic element 2052 and pushing the bellows 2051 to extend into the warning shell 205. When the bellows 2051 extends to the end and contacts the warning device 2053, the warning device 2053 is triggered, indicating that water medium leakage has occurred at the valve at this position.

[0048] When a gaseous medium leaks, the gaseous medium is light and diffuses quickly, so there is no need to drive the rotating ring 204 to rotate. The leaked gas in the valve body 101 first gathers in the inner cavity 103, and then enters the flow channel 2041 along the connecting pipe 201 and the connector 2042. Because the gas is light, it cannot form a water column with thrust like water. Therefore, the gas will not drive the rotating ring 204 to rotate, but will directly diffuse quickly along the flow channel 2041 and enter the receiving cavity 203 from the outer ring of the rotating ring 204.

[0049] The air pressure drives the bellows 2051 to deform and triggers the alarm. The gas quickly fills the accommodating cavity 203, and the air pressure rises rapidly. It does not need to accumulate for a long time to overcome the thrust of the first elastic element 2052 and push the bellows 2051 to extend. When the end of the bellows contacts the warning device 2053, the alarm is triggered to indicate that the gas medium is leaking. Example 3

[0050] Reference Figures 5-7This is the third embodiment of the present invention, which is implemented based on the previous embodiment.

[0051] Specifically, the pressure relief shell 301 is installed at the end of the sealing shell 102 and the pressure relief shell 301 is provided with a pressure relief cavity 3011. The first inner shell 303 is fixed to the inner wall of the pressure relief shell 301 and the first through hole 3031 opened at the end of the first inner shell 303 is connected to the pressure relief cavity 3011. The second inner shell 304 is installed on the inner wall of the first inner shell 303 and moves.

[0052] The outer wall of the pressure relief chamber 3011 is connected to the pressure relief pipe 3012. The leaked medium enters the pressure relief chamber 3011 through the inner cavity 103 and is finally discharged to the outside through the pressure relief pipe 3012 to prevent the internal pressure of the sealing shell 102 from being overloaded.

[0053] Both the first inner shell 303 and the second inner shell 304 are installed inside the pressure relief shell 301. The difference is that the first inner shell 303 is fixed and does not move, while the second inner shell 304 moves linearly inside the first inner shell 303.

[0054] Preferably, the inner wall of the second inner shell 304 is provided with a limiting post 305, and a disc 3051 is provided at one end of the limiting post 305. A third elastic member 3052 is provided at the other end of the limiting post 305. The other end of the third elastic member 3052 is located on the inner wall of the cavity 3043 opened at the end of the second inner shell 304, and is used to pull the limiting post 305 so that the end face of the disc 3051 fits against the end of the second inner shell 304.

[0055] In this configuration, one end of the third elastic element 3052 is fixed below the limiting post 305, and the other end is on the inner wall of the cavity 3043 in the inner wall of the second inner shell 304. The limiting post 305 is pushed upward by the third elastic element 3052, and the disc 3051 at the bottom of the limiting post 305 will be attached to the bottom of the second inner shell 304.

[0056] By attaching the disc 3051 to the bottom of the second inner shell 304, the connecting pipe below the pressure relief shell 301 is blocked. When the pressure of the medium in the inner cavity 103 increases, if the leaked medium wants to enter the pressure relief shell 301, the disc 3051 needs to be pushed first, so that the disc 3051 and the entire second inner shell 304 move upward as a whole.

[0057] The end of the second inner shell 304 is attached to the inner wall of the first inner shell 303 and has a connecting cavity 3032. The inner wall of the second inner shell 304 has an array of through grooves 3041. The connecting cavity 3032 is connected to the cavity 3043 located at the end of the second inner shell 304 through the through grooves 3041.

[0058] The connecting cavity 3032 is located at the end of the first inner shell 303 and is a space between the bottom of the first inner shell 303 and the bottom of the second inner shell 304. The connecting cavity 3032 is connected to the cavity 3043 at the end of the second inner shell 304 through the through slot 3041 formed in the inner wall array of the second inner shell 304.

[0059] The second inner shell 304 has a flow cavity 3044 at its end and the outer wall of the flow cavity 3044 has a second through hole 3042 arrayed thereon. The flow cavity 3044 is connected to the connecting cavity 3032 through the second through hole 3042.

[0060] The flow cavity 3044 is located at the bottom of the second inner shell 304. Under normal conditions, it is blocked by the disc 3051. When the medium in the inner cavity 103 enters the pressure relief shell 301, it first pushes the disc 3051 and the second inner shell 304 to move upward as a whole. At this time, the medium directly enters the interior of the connecting cavity 3032 through the edge gap at the bottom of the second inner shell 304, and enters the pressure relief cavity 3011 through the first through hole 3031, and is discharged to the outside through the pressure relief pipe 3012.

[0061] When the pressure of the medium inside the inner cavity 103 increases further, some of the medium enters the cavity 3043 through the through groove 3041 and pushes the limiting post 305 downward. At this time, the disk 3051 moves away from the bottom of the second inner shell 304, and the medium in the inner cavity 103 directly enters the flow cavity 3044 and enters the connecting cavity 3032 and the pressure relief cavity 3011 through the second through hole 3042.

[0062] Preferably, a column 3021 is provided at the center of the inner wall of the connecting shell 302 and the column 3021 is positioned opposite to the limiting column 305. The second elastic member 3022 is sleeved on the outer wall of the column 3021 and its other end is connected to the end of the second inner shell 304.

[0063] The upright post 3021 and the limiting post 305 are positioned opposite each other. When the disc 3051 and the second inner shell 304 move upward as a whole, the limiting post 305 abuts against the upright post 3021, restricting its further upward movement. When the second inner shell 304 moves upward, it compresses the second elastic member 3022, causing it to deform.

[0064] When the pressure inside the inner cavity 103 increases further, the limiting post 305 moves downward inside the second inner shell 304, exposing the opening between the disc 3051 and the flow cavity 3044. Under the push of the second elastic member 3022, the second inner shell 304 moves downward. At the same time, the opening between the disc 3051 and the flow cavity 3044 remains open, allowing the leaked medium to enter the pressure relief cavity 3011 and complete the pressure relief work.

[0065] In summary, during use, the second elastic element 3022 is in a naturally extended state, pushing the second inner shell 304 to fit against the inner wall of the first inner shell 303, and the connecting cavity 3032 between the two is in a closed state. At the same time, the third elastic element 3052 pulls the limiting post 305 upward, so that the disc 3051 at the end of the limiting post 305 fits tightly against the bottom of the second inner shell 304, blocking the entrance of the flow cavity 3044. There is no leakage medium in the pressure relief cavity 3011, the connecting cavity 3032, the cavity 3043, and the flow cavity 3044, and no medium is discharged from the pressure relief pipe 3012. The column 3021 and the limiting post 305 are in relative positions and do not collide.

[0066] When the valve body 101 leaks quickly, the pressure initially rises and the pressure is initially released. A large amount of water or gas rushes into the inner cavity 103 of the sealing shell 102, causing the pressure in the inner cavity 103 to rise sharply, and the medium flows towards the pressure relief shell 301. The high-pressure medium acts on the end face of the disk 3051, and its pressure overcomes the pushing force of the second elastic element 3022, pushing the disk 3051 to move upward, thereby causing the limiting post 305 and the second inner shell 304 to slide upward along the inner wall of the first inner shell 303.

[0067] During the upward movement of the second inner shell 304, the second elastic element 3022, which is sleeved on the outer wall of the column 3021, is compressed and deformed. When the top of the limiting column 305 abuts against the end face of the column 3021, the second inner shell 304 stops moving upward to avoid excessive displacement.

[0068] After the second inner shell 304 moves upward, a gap is formed between its bottom and the bottom of the first inner shell 303. The leaked medium can directly enter the interior of the connecting cavity 3032 through this gap and flow into the pressure relief cavity 3011 along the first through hole 3031. Finally, it is discharged through the pressure relief pipe 3012 connected to the outer wall of the pressure relief cavity 3011, thus achieving initial pressure relief.

[0069] As the leakage of the medium continues, the pressure of the medium inside the inner cavity 103 further increases, exceeding the initial pressure relief capacity. Some of the high-pressure medium enters the cavity 3043 at the end of the second inner shell 304 through the through-slots 3041 opened in the inner wall array of the second inner shell 304. The medium pressure in the cavity 3043 overcomes the pulling force of the third elastic element 3052, pushing the limiting post 305 to move downward, so that the disk 3051 moves away from the bottom of the second inner shell 304, exposing the inlet of the flow cavity 3044.

[0070] A large amount of medium in the inner cavity 103 directly enters the flow cavity 3044, and then flows into the connecting cavity 3032 through the second through hole 3042 arrayed on the outer wall of the flow cavity 3044; At this time, the connecting cavity 3032 simultaneously receives the medium flowing in from the bottom gap of the second inner shell 304 and the medium flowing in from the second through hole 3042. The medium flow rate increases significantly and quickly flows into the pressure relief cavity 3011 through the first through hole 3031, and is discharged at high speed through the pressure relief pipe 3012, thereby accelerating pressure relief.

[0071] As the medium continues to be discharged, the pressure inside the inner cavity 103 gradually decreases, and the pressure of the medium inside the cavity 3043 decreases accordingly. The third elastic element 3052 resumes its deformation and pulls the limiting post 305 upward, causing the disc 3051 to move towards the bottom of the second inner shell 304. However, because the medium is still flowing, the disc 3051 and the inlet of the flow cavity 3044 remain open to ensure continuous pressure relief.

[0072] The second elastic element 3022 recovers its deformation, pushing the second inner shell 304 to move downward along the inner wall of the first inner shell 303, returning to the initial fitting position.

[0073] When the pressure inside the inner cavity 103 drops to the normal range and the leakage stops, the third elastic element 3052 is fully reset, which drives the disc 3051 to re-seal the inlet of the flow cavity 3044. The second inner shell 304 and the limiting post 305 return to their initial state, and the pressure relief component stops working.

[0074] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A water and gas supply pipeline valve with leakage alarm, characterized in that: include: The main component (100) includes a valve body (101), the outer wall of which is fitted with a sealing shell (102) and the inner wall of the sealing shell (102) is provided with an inner cavity (103). The warning component (200) includes a mounting housing (202), wherein a rotating ring (204) is provided inside the mounting housing (202) and a connector (2042) is provided on the outer wall of the rotating ring (204). The connector (2042) is connected to a connecting pipe (201) provided on the outer wall of the sealing housing (102) and communicates with the inner cavity (103). The sealing shell (102) is also provided with a pressure relief component at its end. The pressure relief component includes a pressure relief shell (301). The pressure relief shell (301) is provided with a connecting shell (302) at its end. A first inner shell (303) is provided inside the connecting shell (302). A second inner shell (304) is also provided on the inner wall of the first inner shell (303). The second inner shell (304) is attached to the inner wall of the first inner shell (303) by the influence of the second elastic member (3022) provided on the inner wall of the pressure relief shell (301).

2. The water and gas supply pipeline valve with leakage alarm as described in claim 1, characterized in that: The mounting housing (202) has an inner wall with a receiving cavity (203) and the rotating ring (204) is located on the inner wall of the receiving cavity (203). The inner wall of the rotating ring (204) has a flow channel (2041) and the flow channel (2041) is connected to the connecting pipe (201) through a connector (2042).

3. The water and gas supply pipeline valve with leakage alarm as described in claim 2, characterized in that: The outer wall of the mounting housing (202) is provided with a warning shell (205), and the inner wall of the accommodating cavity (203) is fixed with a bellows (2051) and the end of the bellows (2051) extends to the inner wall of the warning shell (205).

4. The water and gas supply pipeline valve with leakage alarm as described in claim 3, characterized in that: The warning shell (205) is further provided with a first elastic element (2052) at one end, and the other end of the first elastic element (2052) is fixed to the inner wall of the warning shell (205). The inner wall of the warning shell (205) is further provided with a warning device (2053), and the warning device (2053) is located at the end of the corrugated pipe (2051).

5. The water and gas supply pipeline valve with leakage alarm as described in claim 4, characterized in that: The pressure relief shell (301) is installed at the end of the sealing shell (102) and the pressure relief shell (301) is provided with a pressure relief cavity (3011). The first inner shell (303) is fixed to the inner wall of the pressure relief shell (301) and the first through hole (3031) opened at the end of the first inner shell (303) is connected to the pressure relief cavity (3011). The second inner shell (304) is installed on the inner wall of the first inner shell (303) and moves.

6. The water and gas supply pipeline valve with leakage alarm as described in claim 5, characterized in that: The inner wall of the second inner shell (304) is provided with a limiting post (305) and a disc (3051) is provided at the end of the limiting post (305), and a third elastic element (3052) is provided at the other end of the limiting post (305).

7. The water and gas supply pipeline valve with leakage alarm as described in claim 6, characterized in that: The other end of the third elastic element (3052) is located in the inner wall of the cavity (3043) opened at the end of the second inner shell (304) to pull the limiting post (305) so that the end face of the disc (3051) fits against the end of the second inner shell (304).

8. The water and gas supply pipeline valve with leakage alarm as described in claim 7, characterized in that: The end of the second inner shell (304) is attached to the inner wall of the first inner shell (303) and has a connecting cavity (3032). The inner wall of the second inner shell (304) has an array of through grooves (3041). The connecting cavity (3032) is connected to the cavity (3043) at the end of the second inner shell (304) through the through grooves (3041).

9. The water and gas supply pipeline valve with leakage alarm as described in claim 8, characterized in that: The second inner shell (304) has a flow cavity (3044) at its end and the outer wall of the flow cavity (3044) has a second through hole (3042) arrayed thereon. The flow cavity (3044) is connected to the connecting cavity (3032) through the second through hole (3042).

10. The water and gas supply pipeline valve with leakage alarm as described in claim 9, characterized in that: A column (3021) is provided at the axial center of the inner wall of the connecting shell (302), and the column (3021) is positioned opposite to the limiting column (305). The second elastic element (3022) is sleeved on the outer wall of the column (3021), and its other end is connected to the end of the second inner shell (304).

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