A gas monitoring system for an electronic valve and a control method thereof

Abstract

The present invention belongs to the technical field of gas valves, and particularly relates to a gas monitoring system of an electronic valve and a control method thereof. The gas monitoring system comprises an electronic valve and a gas detector. The electronic valve is installed on a gas pipeline and comprises a valve body and a valve core installed in the valve body. The gas detector is installed in a gas use space and is used to detect the gas concentration in the use space and is electrically connected to the electronic valve. The electronic valve also comprises a driving mechanism for driving the valve core to move to achieve opening and closing and a self-locking mechanism for self-locking the valve core. The gas concentration in the gas use space is detected by the gas detector. When the gas concentration exceeds a safe value, the driving mechanism drives the valve core to close, and the valve core is self-locked by the self-locking mechanism, thereby effectively avoiding the situation where the valve core is pushed open due to increased pressure in the gas pipeline, causing leakage and potential safety hazards.

Description

Technical Field

[0001] The present invention belongs to the technical field of gas valves, and in particular relates to a gas monitoring system of an electronic valve and a control method thereof. Background Art

[0002] An electronic valve is a valve that controls the flow of fluid (such as gas) through electromagnetic effect. It is often used in gas valves to open and close gas pipelines. When used in a gas system, the electronic valve can cut off the gas supply in an emergency to ensure gas safety.

[0003] When a traditional electronic valve is in use, the internal valve core is not locked after the valve body is closed, and is closed based on the force of the spring on the valve core. As a result, the valve core is easily pushed open and leaks due to the increase in pressure in the gas pipeline, posing a safety hazard. Summary of the invention

[0004] The purpose of the present invention is to provide a gas monitoring system and a control method for an electronic valve in order to solve the above-mentioned technical problems, so as to lock the valve core after the valve core is closed, thereby avoiding leakage caused by the valve core being pushed open due to increased pressure in the pipeline.

[0005] In view of this, the present invention provides a gas monitoring system for an electronic valve, comprising:

[0006] An electronic valve is installed on a gas pipeline and comprises a valve body and a valve core installed in the valve body;

[0007] A gas detector is installed in the gas use space and is used to detect the gas concentration in the use space and is electrically connected to the electronic valve;

[0008] The electronic valve further comprises a driving mechanism for driving the valve core to move to realize opening and closing, and a self-locking mechanism for self-locking the valve core.

[0009] In the above technical solution, further, the valve body includes:

[0010] A main body, equipped with a connection port for electrical connection with a gas detector;

[0011] The main pipeline is installed in the main body, and the two ends extend out of the main body and are respectively provided with an air inlet connection end and an air outlet connection end;

[0012] The valve core is installed in the main pipeline, and the driving mechanism is installed on the surface of the main pipeline.

[0013] In the above technical solution, further, the driving mechanism includes:

[0014] The electromagnetic coil is sleeved on the main pipe and electrically connected to the connection port;

[0015] The circular ring is sleeved on the main pipe and is located inside the electromagnetic coil on one side close to the gas outlet connection end, and can be magnetized by the electromagnetic coil after power is supplied;

[0016] The magnet ring is sleeved on the main pipe and is located inside the electromagnetic coil on one side close to the air inlet connection end, and has the same magnetic pole in the axial direction as the electromagnetic coil after power is supplied;

[0017] The valve core is magnetic, and its magnetic pole is opposite to that of the magnet ring in the axial direction, and a plurality of air holes are opened along the circumference on one side of the valve core away from the axis.

[0018] In the above technical solution, further, it also includes:

[0019] The sleeve is sleeved on the main pipe, and one end of the sleeve extends into the main body to abut against the magnet ring, and the other end of the sleeve extends out of the main body.

[0020] In the above technical solution, further, it also includes:

[0021] A limit ring is sleeved on the main pipe and is located on a side of the magnet ring close to the air inlet connection end, and is used to limit the maximum distance that the magnet ring moves axially toward the air inlet connection end;

[0022] The limiting ring is threadedly connected to the surface of the main pipe and will not restrict the axial movement of the sleeve.

[0023] In the above technical solution, further, the self-locking mechanism includes:

[0024] A locking block is installed on the main pipe and can slide along the radial direction of the main pipe;

[0025] The abutment portion is located on the surface of the valve core and cooperates with the locking block to limit the movement of the valve core toward the air outlet connection end;

[0026] The driving assembly is installed on the main pipe and is used to drive the locking block to slide.

[0027] In the above technical solution, further, the driving component includes:

[0028] The shell is connected to the main pipeline, and the main pipeline is provided with a stepped hole for installing the shell;

[0029] The electromagnet is installed in the housing and electrically connected to the connection port, and a wire passing slot hole is provided on the sleeve;

[0030] The locking block is slidably connected to the shell and can be adsorbed by the electromagnet, and a stepped hole is extended from one end to cooperate with the abutment portion, and a notch is opened on the limit ring for avoiding the shell.

[0031] In the above technical solution, further, the driving component also includes:

[0032] The spring is sleeved on the electromagnet, and two ends of the spring are respectively in contact with the inner wall of the shell and the locking block.

[0033] In the above technical solution, further:

[0034] The locking block is provided with an upper tooth, the abutting portion is provided with a lower tooth, and the upper tooth is adapted to the lower tooth, and the cross-sections of the upper tooth and the lower tooth are both right-angled triangles;

[0035] Among them, the side of the lower tooth close to the air inlet connection end is an inclined surface, the side of the upper tooth close to the air outlet connection end is an inclined surface, and the upper tooth can be adsorbed by an energized electromagnet.

[0036] The present invention provides a control method for a gas monitoring system of an electronic valve, comprising the following steps:

[0037] S1: When the gas detector detects that the gas concentration in the gas use space exceeds the set safety value, it will power the electromagnetic coil and the electromagnet;

[0038] S2: When the electromagnetic coil is energized and magnetizes the circular ring, and the axial magnetic pole of the circular ring is opposite to the magnetic pole of the electromagnetic coil, the electromagnetic coil will exert an axial thrust on the magnet ring because the axial magnetic pole of the magnet ring is the same as that of the electromagnetic coil, and push the magnet ring axially out of the electromagnetic coil. The axial magnetic pole of the circular ring is opposite to that of the magnet ring, and thus exerts an axial thrust on the magnet ring, further pushing the magnet ring axially out of the electromagnetic coil.

[0039] S3: Since the magnetic pole of the valve core along the axial direction is opposite to that of the magnet ring, there is an adsorption force between the valve core and the magnet ring in the radial direction, and then the valve core is driven by the magnet ring to move toward the air inlet connection end to block the air inlet connection end;

[0040] S4: When the valve core moves, the lower teeth will push up the upper teeth and compress the spring at the same time. After the valve core is in place, the upper teeth and the lower teeth will lock the valve core;

[0041] S5: When the gas detector detects that the gas concentration in the gas use space has returned to the set safety value, the electromagnetic coil is powered off and the electromagnet is powered on to adsorb the upper teeth and compress the spring. At this time, the valve core is unlocked and the valve core opens the air inlet connection end under the action of the gas pressure.

[0042] The beneficial effects of the present invention are:

[0043] 1. The gas concentration in the gas-using space is detected by a gas detector. When the gas concentration exceeds the safety value, the driving mechanism drives the valve core to close, and the valve core is self-locked by the self-locking mechanism, effectively avoiding the situation where the valve core is pushed open due to the increased pressure in the gas pipeline, causing leakage and potential safety hazards.

[0044] 2. By setting the valve body as the main pipeline, and directly setting the air inlet connection end and the air outlet connection end at both ends of the main pipeline, and setting the valve core and the driving mechanism on the inner and outer sides of the main pipeline respectively, the leakage points at the valve core can be reduced, further reducing the occurrence of leakage and ensuring safety hazards.

[0045] 3. The setting of the sleeve facilitates the resetting of the magnet ring, i.e. manual resetting, to ensure safety and facilitate observation and understanding of the position of the valve core. Furthermore, the on-off condition in the electronic valve can be used to determine whether the gas concentration in the gas use space exceeds the standard, thereby increasing the possibility of discovering that the gas concentration exceeds the standard and improving safety in use.

[0046] 4. By setting the self-locking mechanism with a locking block and an abutment portion, the valve core can be effectively restricted in the axial direction. At the same time, the upper teeth and the lower teeth are used to cooperate so that when the valve core closes the main pipeline, the upper teeth can be automatically lifted up, and then the upper teeth and the lower teeth are automatically cooperated to lock the valve core under the action of the spring. The adsorption of the locking block by the electromagnet can facilitate the release of the lock on the valve core and facilitate the opening of the valve core to the main pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a schematic diagram of the structure of the present invention;

[0048] Figure 2 It is a schematic diagram of the structure when the valve core of the present invention is not closed;

[0049] Figure 3 The present invention Figure 2 The enlarged view of point A in the middle;

[0050] Figure 4 It is a structural schematic diagram of the valve core of the present invention when it is closed;

[0051] Figure 5 The present invention Figure 4 The enlarged view of point B in the middle;

[0052] The markings in the figure are as follows: 1. valve body; 10. main body; 11. connection port; 12. main pipeline; 13. air inlet connection end; 14. air outlet connection end; 2. valve core; 20. air hole; 3. driving mechanism; 30. electromagnetic coil; 31. circular ring; 32. magnet ring; 4. self-locking mechanism; 40. locking block; 41. abutment portion; 42. driving assembly; 420. housing; 421. stepped hole; 422. electromagnet; 423. wire slot; 424. notch; 425. spring; 43. upper teeth; 44. lower teeth; 5. sleeve; 6. limit ring. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0054] Embodiment 1:

[0055] This embodiment provides a gas monitoring system for an electronic valve, including:

[0056] The electronic valve is installed on the gas pipeline and comprises a valve body 1 and a valve core 2 installed in the valve body 1;

[0057] A gas detector is installed in the gas use space and is used to detect the gas concentration in the use space and is electrically connected to the electronic valve;

[0058] The electronic valve further includes a driving mechanism 3 for driving the valve core 2 to move and realize opening and closing, and a self-locking mechanism 4 for self-locking the valve core 2;

[0059] Meanwhile, the specific structure of the gas detector is an existing mature technology, which only needs to monitor the gas concentration and provide feedback, and will not be elaborated here;

[0060] In addition, the electronic valve can be installed at the outdoor household entrance, and the gas detector can be installed in the gas use space to avoid leakage points increased by the setting of the electronic valve in the gas use space, thereby ensuring safety of use. That is, the electronic valve of the present application can be used as a household valve to effectively ensure gas safety.

[0061] It can be seen from the present embodiment that the gas concentration in the gas use space is detected by means of a gas detector. When the gas concentration exceeds a safe value, the driving mechanism 3 drives the valve core 2 to close, and the valve core 2 is self-locked by the self-locking mechanism 4, thereby effectively preventing the valve core 2 from being pushed open due to increased pressure in the gas pipeline, causing leakage and potential safety hazards.

[0062] Embodiment 2:

[0063] This embodiment provides a gas monitoring system for an electronic valve. In addition to the technical solutions of the above embodiments, it also has the following technical features. The valve body 1 includes:

[0064] The main body 10 is provided with a connection port 11 for electrical connection with the gas detector;

[0065] The main pipe 12 is installed in the main body 10, and the two ends of the main body 10 are respectively extended out of the main body 10 and are provided with an air inlet connection end 13 and an air outlet connection end 14;

[0066] The valve core 2 is installed in the main pipeline 12, and the driving mechanism 3 is installed on the surface of the main pipeline 12;

[0067] At the same time, a first boss is provided in the main pipeline 12 near the outlet connection end 14 to prevent the valve core 2 from slipping out of the main pipeline 12 , and a second boss is provided near the inlet connection end 13 to prevent the valve core 2 from slipping out of the main pipeline 12 .

[0068] It can be seen from the present embodiment that by setting the valve body 1 as the main pipeline 12, and directly setting the air inlet connection end 13 and the air outlet connection end 14 at both ends of the main pipeline 12, and at the same time setting the valve core 2 and the driving mechanism 3 on the inner and outer sides of the main pipeline 12 respectively, the leakage points at the valve core 2 can be reduced, the occurrence of leakage can be further reduced, and safety hazards can be guaranteed.

[0069] Embodiment 3:

[0070] This embodiment provides a gas monitoring system for an electronic valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features. The driving mechanism 3 includes:

[0071] The electromagnetic coil 30 is sleeved on the main pipe 12 and electrically connected to the connection port 11;

[0072] The ring 31 is sleeved on the main pipe 12 and is located inside the electromagnetic coil 30 on one side close to the gas outlet connection end 14, and can be magnetized by the electromagnetic coil 30 after power is supplied;

[0073] The magnet ring 32 is sleeved on the main pipe 12 and is located inside a side of the electromagnetic coil 30 close to the air inlet connection end 13, and has the same magnetic pole in the axial direction as the electromagnetic coil 30 after power is supplied;

[0074] The valve core 2 is magnetic, and its magnetic pole is opposite to that of the magnet ring 32 in the axial direction, and a plurality of air holes 20 are opened along the circumference of the valve core 2 on the side away from the axis.

[0075] Meanwhile, the magnet ring 32 and the valve core 2 are both made of permanent magnets, and the valve core 2 includes a main body 10 and a sealing disk on a side close to the air inlet connection end 13 , and the sealing disk can be made of rubber material.

[0076] It can be seen from this embodiment that by electrically connecting the electromagnetic coil 30 to the connection port 11, when the gas concentration exceeds the safety value, the electromagnetic coil 30 can be energized to generate magnetism, and the annular ring 31 can be magnetized so that the opposite surfaces of the annular ring 31 and the magnet ring 32 repel each other with the same polarity, thereby generating thrust on the magnet ring 32, which can reduce the thrust demand of the magnet ring 32 on the electromagnetic coil 30, facilitate reasonable setting of the current intensity of the electromagnetic coil 30, thereby avoiding the excessive magnetic field of the electromagnetic coil 30 and affecting the magnetism of the magnet ring 32 and the valve core 2, thereby improving reliability;

[0077] In addition, a plurality of air holes 20 are provided on the valve core 2, which ensures air flow while facilitating the portion of the valve core 2 that is attracted by the magnet ring 32 to be in close contact with the inner wall of the main pipe 12, thereby ensuring a small gap between the portion of the valve core 2 that is attracted by the magnet ring 32 and the magnet ring 32, and ensuring that when the magnet ring 32 moves axially, it can effectively drive the valve core 2 to move axially.

[0078] Embodiment 4:

[0079] This embodiment provides a gas monitoring system for an electronic valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features, including:

[0080] The sleeve 5 is sleeved on the main pipe 12, and one end of the sleeve extends into the main body 10 to abut against the magnet ring 32, and the other end of the sleeve extends out of the main body 10;

[0081] One end of the sleeve 5 extending out of the main body 10 is bent toward a side away from the axis to form a bent portion for marking, thereby improving the functionality of the sleeve 5 .

[0082] It can be seen from the present embodiment that the arrangement of the sleeve 5 facilitates the resetting of the magnet ring 32, i.e. manual resetting, thereby ensuring safety and facilitating the observation and understanding of the position of the valve core 2. Furthermore, it is possible to know whether the gas concentration in the gas use space exceeds the standard through the on-off condition in the electronic valve, thereby increasing the possibility of discovering that the gas concentration exceeds the standard and improving safety in use.

[0083] Embodiment 5:

[0084] This embodiment provides a gas monitoring system for an electronic valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features, including:

[0085] The limiting ring 6 is sleeved on the main pipe 12 and is located on the side of the magnet ring 32 close to the air inlet connection end 13, and is used to limit the maximum distance that the magnet ring 32 can move toward the air inlet connection end 13 in the axial direction;

[0086] The limiting ring 6 is threadedly connected to the surface of the main pipe 12 and does not restrict the axial movement of the sleeve 5 .

[0087] It can be seen from the present embodiment that the limit ring 6 threadedly connected to the surface of the main pipe 12 can adjust and limit the distance of the magnet ring 32 moving in the axial direction, so as to avoid excessive movement of the magnet ring 32 after the valve core 2 closes the main pipe 12, resulting in weakening of the adsorption force between the magnet ring 32 and the valve core 2, affecting the closing force of the valve core 2, and avoiding the situation where the valve core 2 is pushed open due to the gas pressure;

[0088] The limiting ring 6 is arranged so as not to restrict the axial movement of the sleeve 5 , thereby ensuring the axial direction of the sleeve 5 and ensuring the resetting of the magnet ring 32 .

[0089] Embodiment 6:

[0090] This embodiment provides a gas monitoring system for an electronic valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features: the self-locking mechanism 4 includes:

[0091] The locking block 40 is mounted on the main pipe 12 and can slide along the radial direction of the main pipe 12;

[0092] The abutment portion 41 is located on the surface of the valve core 2 and cooperates with the locking block 40 to limit the movement of the valve core 2 toward the gas outlet connection end 14;

[0093] A driving assembly 42 is installed on the main pipe 12 and is used to drive the locking block 40 to slide;

[0094] The abutting portion 41 and the valve core 2 are in an integrated structure.

[0095] It can be seen from the present embodiment that the arrangement of the locking block 40 and the abutment portion 41 facilitates the axial locking of the valve core 2, thereby preventing the valve core 2 from being pushed open after the main pipeline 12 is closed due to the pressure in the main pipeline 12 increasing and exceeding the adsorption force of the magnet ring 32 on the valve core 2. The driving component 42 facilitates driving the locking block 40 to slide radially, thereby facilitating unlocking the lock between the locking block 40 and the abutment portion 41, thereby improving convenience and control effect.

[0096] Embodiment 7:

[0097] This embodiment provides a gas monitoring system for an electronic valve. In addition to the technical solutions of the above embodiments, it also has the following technical features. The driving component 42 includes:

[0098] The housing 420 is connected to the main pipe 12, and the main pipe 12 is provided with a stepped hole 421 for installing the housing 420;

[0099] The electromagnet 422 is installed in the housing 420 and is electrically connected to the connection port 11, and a wire passing slot 423 is provided on the sleeve 5;

[0100] The locking block 40 is slidably connected to the housing 420 and can be adsorbed by the electromagnet 422. A stepped hole 421 is extended from one end to cooperate with the abutment portion 41, and a notch 424 is provided on the limiting ring 6 to avoid the housing 420.

[0101] At the same time, a seal is provided at the housing 420 at the place where the lead wire of the electromagnet 422 is led out, so as to prevent the gas in the main pipeline 12 from leaking from this place.

[0102] It can be seen from this embodiment that the locking block 40 is adsorbed by the electromagnet 422, thereby releasing the clamping connection between the locking block 40 and the abutting portion 41, which facilitates unlocking the valve core 2. At the same time, the step hole 421 is opened to prevent the locking block 40 from entering the main pipe 12, thereby ensuring the stability of the installation and sliding of the locking block 40.

[0103] A seal is provided at the position of the shell 420 for leading out the wire of the electromagnet 422 to ensure sealing; at the same time, the opening of the wire groove facilitates the leading out of the wire of the electromagnet 422, and the opening of the notch 424 can prevent the magnet ring 32 from abutting against the surface of the shell 420, thereby ensuring the stability and reliability of the installation of the shell 420.

[0104] Embodiment 8:

[0105] This embodiment provides a gas monitoring system for an electronic valve. In addition to the technical solutions of the above embodiments, it also has the following technical features. The drive component 42 also includes:

[0106] The spring 425 is sleeved on the electromagnet 422 , and two ends thereof are respectively in contact with the inner wall of the housing 420 and the locking block 40 .

[0107] It can be seen from this embodiment that, through the provision of the spring 425, when the electromagnet 422 is powered off, the locking block 40 can be pushed out of the inner wall of the shell 420, so that it cooperates with the overlapping part to lock the valve core 2 and ensure the self-control effect.

[0108] Embodiment 9:

[0109] This embodiment provides a gas monitoring system for an electronic valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0110] The locking block 40 is provided with an upper tooth 43, and the abutting portion 41 is provided with a lower tooth 44, and the upper tooth 43 and the lower tooth 44 are adapted to each other, and the cross-sections of the upper tooth 43 and the lower tooth 44 are both in the shape of a right triangle;

[0111] The side of the lower teeth 44 close to the air inlet connection end 13 is an inclined surface, and the side of the upper teeth 43 close to the air outlet connection end 14 is an inclined surface.

[0112] It can be seen from this embodiment that by using the cooperation of the upper teeth 43 and the lower teeth 44, when the valve core 2 closes the main pipeline 12, the upper teeth 43 can be automatically lifted up, and then the upper teeth 43 and the lower teeth 44 are automatically forced to cooperate with each other to lock the valve core 2 under the action of the spring 425;

[0113] The upper teeth 43 and the lower teeth 44 are both right triangles, and the side of the lower teeth 44 close to the air inlet connection end 13 is an inclined surface, and the side of the upper teeth 43 close to the air outlet connection end 14 is an inclined surface. When the valve core 2 moves toward the air inlet connection end 13 to close the main pipeline 12, the upper teeth 43 can be lifted up without the help of the electromagnet 422, thereby avoiding electromagnetic interference between the electromagnet 422 and the electromagnetic coil 30 and ensuring reliability.

[0114] Embodiment 10:

[0115] This embodiment provides a control method for a gas monitoring system of an electronic valve, comprising the following steps:

[0116] S1: When the gas detector detects that the gas concentration in the gas use space exceeds the set safety value, the electromagnetic coil 30 and the electromagnet 422 will be powered;

[0117] S2: When the electromagnetic coil 30 is energized and magnetizes the circular ring 31, and the axial magnetic pole of the circular ring 31 is opposite to the magnetic pole of the electromagnetic coil 30, since the axial magnetic pole of the magnet ring 32 is the same as that of the electromagnetic coil 30, the electromagnetic coil 30 will exert an axial thrust on the magnet ring 32, pushing the magnet ring 32 out of the electromagnetic coil 30 in the axial direction, and the axial magnetic pole of the circular ring 31 is opposite to that of the magnet ring 32, and thus exerts an axial thrust on the magnet ring 32, further pushing the magnet ring 32 out of the electromagnetic coil 30 in the axial direction;

[0118] S3: Since the magnetic poles of the valve core 2 along the axial direction are opposite to those of the magnet ring 32, there is an adsorption force between the valve core 2 and the magnet ring 32 in the radial direction, and then the valve core 2 is driven by the magnet ring 32 to move toward the air inlet connection end 13 to block the air inlet connection end 13;

[0119] S4: When the valve core 2 moves, the lower teeth 44 will push up the upper teeth 43 and compress the spring 425. After the valve core 2 is in place, the upper teeth 43 and the lower teeth 44 will lock the valve core 2.

[0120] S5: When the gas detector detects that the gas concentration in the gas use space has returned to the set safety value, the electromagnetic coil 30 is powered off, and the electromagnet 422 is powered on to attract the upper teeth 43 and compress the spring 425. At this time, the valve core 2 is unlocked, and the valve core 2 opens the air inlet connection end 13 under the action of the gas pressure;

[0121] Among them, the electromagnet 422 and the electromagnetic coil 30 are both connected to the connection port 11, and the connection port 11 is connected to a power supply. At the same time, the power supply can control the power on and off of the electromagnet 422 and the electromagnetic coil 30 using a single-pole double-throw switch, that is, when the electromagnet 422 is energized, the electromagnetic coil 30 is de-energized, and when the electromagnet 422 is de-energized, the electromagnetic coil 30 is energized.

[0122] It can be seen from this embodiment that, through the above control method, when the gas concentration in the gas use space exceeds the safety value, the electromagnetic coil 30 can be energized, thereby pushing the valve core 2 to close the main pipeline 12, thereby preventing the continued supply of gas, eliminating potential safety hazards, and ensuring safety. At the same time, when the valve core 2 closes the main pipeline 12, its lower teeth 44 will push up the upper teeth 43, and after the valve core 2 closes the main pipeline, the upper teeth 43 will abut against the lower teeth 44 under the action of the spring 425, thereby locking the valve core 2, thereby preventing the valve core 2 from being pushed open due to the increase in gas pressure;

[0123] At the same time, when the electromagnetic coil 30 is energized, the electromagnet 422 is in a power-off state, that is, when the valve core 2 is pushed to move, the influence of the electromagnet 422 on the magnetic field of the electromagnetic coil 30 can be avoided. When the electromagnet 422 is in a energized state, that is, after the gas concentration in the gas use space returns to normal, the electromagnetic coil 30 is in a power-off state, which can avoid the electromagnetic coil 30 from affecting the magnetic field of the electromagnet 422, that is, it can effectively avoid the mutual influence of the magnetic fields of the electromagnet 422 and the electromagnetic coil 30, thereby ensuring reliability and safety.

[0124] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A gas monitoring system for an electronic valve, characterized in that: include: An electronic valve is installed on a gas pipeline and comprises a valve body (1) and a valve core (2) installed in the valve body (1); A gas detector is installed in the gas use space and is used to detect the gas concentration in the use space and is electrically connected to the electronic valve; The electronic valve further comprises a driving mechanism (3) for driving the valve core (2) to move to achieve opening and closing, and a self-locking mechanism (4) for self-locking the valve core (2).

2. The gas monitoring system of the electronic valve according to claim 1, characterized in that: The valve body (1) comprises: A main body (10) is provided with a connection port (11) for electrical connection with a gas detector; The main pipeline (12) is installed in the main body (10), and the two ends of the main body (10) are respectively extended out of the main body (10) and are provided with an air inlet connection end (13) and an air outlet connection end (14); The valve core (2) is installed in the main pipeline (12), and the driving mechanism (3) is installed on the surface of the main pipeline (12).

3. The gas monitoring system of the electronic valve according to claim 2, characterized in that: The driving mechanism (3) comprises: An electromagnetic coil (30) is sleeved on the main pipe (12) and electrically connected to the connection port (11); The circular ring (31) is sleeved on the main pipe (12) and is located inside a side of the electromagnetic coil (30) close to the gas outlet connection end (14), and can be magnetized by the electromagnetic coil (30) when it is energized; The magnet ring (32) is sleeved on the main pipe (12) and is located inside a side of the electromagnetic coil (30) close to the air inlet connection end (13), and has the same magnetic pole in the axial direction as the electromagnetic coil (30) after power is supplied; The valve core (2) is magnetic and has a magnetic pole opposite to that of the magnet ring (32) in the axial direction, and a plurality of air holes (20) are provided along the circumference of the valve core (2) on a side away from the axis.

4. The gas monitoring system of the electronic valve according to claim 3, characterized in that: Also includes: The sleeve (5) is sleeved on the main pipe (12), with one end extending into the main body (10) to abut against the magnet ring (32), and the other end extending out of the main body (10).

5. The gas monitoring system of the electronic valve according to claim 4, characterized in that: Also includes: A limit ring (6) is sleeved on the main pipe (12) and is located on a side of the magnet ring (32) close to the air intake connection end (13), and is used to limit the maximum distance that the magnet ring (32) can move in the axial direction toward the air intake connection end (13); The limiting ring (6) is threadedly connected to the surface of the main pipe (12) and will not restrict the axial movement of the sleeve (5).

6. The gas monitoring system of the electronic valve according to claim 5, characterized in that: The self-locking mechanism (4) comprises: A locking block (40) is mounted on the main pipe (12) and is capable of sliding in the radial direction of the main pipe (12); The abutment portion (41) is located on the surface of the valve core (2) and cooperates with the locking block (40) to limit the movement of the valve core (2) toward the air outlet connection end (14); The driving assembly (42) is installed on the main pipe (12) and is used to drive the locking block (40) to slide.

7. The gas monitoring system of the electronic valve according to claim 6, characterized in that: The drive assembly (42) comprises: The shell (420) is connected to the main pipe (12), and the main pipe (12) is provided with a stepped hole (421) for installing the shell (420); The electromagnet (422) is installed in the housing (420) and is electrically connected to the connection port (11), and a wire passing slot (423) is provided on the sleeve (5); The locking block (40) is slidably connected to the housing (420) and can be adsorbed by the electromagnet (422), and one end thereof extends out a stepped hole (421) to cooperate with the abutment portion (41), and a notch (424) is provided on the limiting ring (6) for avoiding the housing (420).

8. The gas monitoring system of the electronic valve according to claim 7, characterized in that: The drive assembly (42) further comprises: The spring (425) is sleeved on the electromagnet (422), and two ends thereof are respectively in contact with the inner wall of the housing (420) and the locking block (40).

9. The gas monitoring system of the electronic valve according to claim 6, characterized in that: The locking block (40) is provided with an upper tooth (43), the abutting portion (41) is provided with a lower tooth (44), the upper tooth (43) is adapted to the lower tooth (44), and the cross-sections of the upper tooth (43) and the lower tooth (44) are both right-angled triangles; Wherein, the side of the lower tooth (44) close to the air inlet connection end (13) is a sloped surface, and the side of the upper tooth (43) close to the air outlet connection end (14) is a sloped surface.

10. A control method for a gas monitoring system of an electronic valve according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: When the gas detector detects that the gas concentration in the gas use space exceeds the set safety value, the electromagnetic coil (30) and the electromagnet (422) are powered; S2: When the electromagnetic coil (30) is energized and the circular ring (31) is magnetized, and the axial magnetic pole of the circular ring (31) is opposite to the magnetic pole of the electromagnetic coil (30), since the axial magnetic pole of the magnet ring (32) is the same as that of the electromagnetic coil (30), the electromagnetic coil (30) will exert an axial thrust on the magnet ring (32), pushing the magnet ring (32) axially out of the electromagnetic coil (30), and the axial magnetic pole of the circular ring (31) is opposite to that of the magnet ring (32), thereby also exerting an axial thrust on the magnet ring (32), further pushing the magnet ring (32) axially out of the electromagnetic coil (30); S3: Since the magnetic poles of the valve core (2) along the axial direction are opposite to those of the magnet ring (32), there is an adsorption force between the valve core (2) and the magnet ring (32) in the radial direction, and the valve core (2) is driven by the magnet ring (32) to move toward the air inlet connection end (13) to block the air inlet connection end (13); S4: When the valve core (2) moves, the lower teeth (44) are driven to push up the upper teeth (43), and the spring (425) is compressed at the same time. After the valve core (2) is in place, the upper teeth (43) and the lower teeth (44) lock the valve core (2); S5: When the gas detector detects that the gas concentration in the gas use space has returned to the set safety value, the electromagnetic coil (30) is powered off and the electromagnet (422) is powered on to attract the upper teeth (43) and compress the spring (425). At this time, the valve core (2) is unlocked and the valve core (2) opens the air inlet connection end (13) under the action of the gas pressure.

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