A gas shut-off valve device based on laser monitoring and communication linkage

Abstract

The application discloses a kind of gas cut-off valve devices based on laser monitoring and communication linkage, it is related to domestic gas monitoring system and emergency cut-off valve technical field.The present application includes two parts of software and hardware.Software part contains gas collection detection module, detection result post-processing module and mobile terminal APP, can real-time display methane concentration and remote control alarm, indicator light, window drive motor and emergency cut-off valve.Hardware part includes laser detector using TDLAS principle, single-chip microcomputer control integrated board, alarm, three-color LED, window drive motor and emergency cut-off valve.When methane concentration is in different interval, system executes alarm, valve cut-off and window opening operation grading, realize multi-layer protection.Emergency cut-off valve uses permanent magnet main valve core and reset spring cooperation, with electromagnetic, manual and motor drive redundant operation, guarantee reliability.The device detection precision is high, response grading is reasonable, with remote and automatic linkage function, significantly improve gas use safety.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household gas monitoring systems and emergency shut-off valves, in particular to a gas shut-off valve device based on laser monitoring and communication linkage. BACKGROUND

[0002] Gas, as a clean and efficient energy source, has shown multi-dimensional advantages in the application of households, industries, transportation and other fields, which not only meets the demand of energy transformation, but also takes into account the economy and convenience. Its current use presents the characteristics of continuous growth of consumption, continuous optimization of consumption structure, and gradual improvement of infrastructure. However, it also faces some safety problems and technical barriers, such as gas leakage. The hazards of gas leakage have the characteristics of immediacy, diffusion and superposition, which not only directly threatens life and property safety, but also may cause long-term environmental and health hazards. For example, the limitations of traditional detection technology, high false positive rate and poor environmental adaptability, and the structure of the shut-off valve cannot guarantee the manual closing ability when the electromagnetic system fails. SUMMARY

[0003] In order to overcome the defects of the prior art, the present application provides the following technical scheme: a gas shut-off valve device based on laser monitoring and communication linkage, which includes software and hardware two parts. The software part mainly includes a gas collection and detection module, a detection result post-processing module and a mobile terminal APP. The hardware part mainly includes a laser detector, a single-chip microcomputer control integrated board, an alarm, three LED indicator lights, a window switch driving motor (the motor type needs to be matched according to the type of the window), and an emergency shut-off valve.

[0004] The mobile APP contained in the software part can not only receive the current methane concentration value in the air in real time, but also can control the alarm, the LED indicator light, the opening and closing of the window and the on-off of the emergency shut-off valve; when the laser detector detects that the methane gas concentration in the air is higher than 15%, the mobile APP will display the words "severe hypoxia asphyxia, burning risk", and will automatically contact the gas company or dial 119, and then all three LED indicator lights will be lit, the emergency shut-off valve will be driven to close the gas pipeline, the alarm will be turned on (the above four operations are not in order, and are performed simultaneously), and after the above operations, the control driving motor opens the window; when the laser detector detects that the methane gas concentration in the air is in the interval of 5%~15%, the mobile APP will display the words "moderate hypoxia, high risk of explosion / burning", and then two LED indicator lights will be lit, the emergency shut-off valve will be driven to close the gas pipeline, and the alarm will be turned on (the above four operations are not in order, and are performed simultaneously), and after the above operations, the control driving motor opens the window; when the laser detector detects that the methane gas concentration in the air is in the interval of 1%~5%, the mobile APP will display the words "hypoxia warning", and then one LED indicator light will be lit, the emergency shut-off valve will be driven to close the gas pipeline, and the alarm will be turned on (the above four operations are not in order, and are performed simultaneously), and after the above operations, the control driving motor opens the window; when the laser detector detects that the methane gas concentration in the air is lower than 1%, the mobile APP will display the words "basically no risk", all LED indicator lights remain off, the emergency shut-off valve does not work, the alarm does not alarm, and the window remains closed.

[0005] The sensor of the laser detector uses TDLAS detection technology and only reacts to methane gas, which technically solves the problems of false positives and false negatives. The window driving motor is selected according to different types of windows, such as DC speed reduction motor for casement windows and sliding windows, stepping motor for suspended windows and precise control scenarios, and DC brushless motor for large-size sliding windows. The working conditions of the driving motor are controlled by the single-chip control integrated board through the Bluetooth module for remote control. The control signal transmission of the alarm and the LED indicator light is integrated on the single-chip control integrated board, and a simple buzzer can be selected for the alarm. Three indicator lights are selected here, and the higher the detected methane concentration, the more indicator lights are lit.

[0006] The laser detector (corresponding to the gas collection and detection module in the software part) is signal connected with the single-chip control integrated board (corresponding to the detection result post-processing module in the software part) for transmitting methane concentration signals. The single-chip control integrated board is signal connected with the mobile APP in the software part for data interaction and remote control. The single-chip control integrated board is signal connected with the alarm, the LED indicator light, the emergency shut-off valve and the window switch driving motor for realizing sound and light alarm, gas shut-off and ventilation linkage.

[0007] Preferably, the emergency cut-off valve comprises a main body pipe, an actuating pipe vertically fixedly connected and communicated on the main body pipe, a Z-shaped partition plate fixedly installed on the inner wall of the main body pipe, and a vent hole formed on the Z-shaped partition plate; the vent hole is blocked or opened by an actuating assembly arranged in the actuating pipe, the actuating assembly comprising a manual valve seat and a clamping ring; a first clamping head and a second clamping head are fixedly installed on the circumferential surface of the manual valve seat; two circumferential channels and two axial channels are formed on the inner side of the clamping ring with respect to the circumferential center of the clamping ring, and the corresponding axial channel and circumferential channel are arranged in T-shaped communication, and the second clamping head is in conductive contact with the inner wall of the circumferential channel and the axial channel.

[0008] Preferably, the Z-shaped partition plate comprises a horizontal plate arranged axially along the main body pipe, a first circular arc plate and a second circular arc plate fixedly installed at both ends of the horizontal plate, and the first circular arc plate and the second circular arc plate are symmetrically arranged with respect to the center point of the horizontal plate, wherein a vent hole is formed at the center point of the horizontal plate, and the Z-shaped partition plate is used to divide the inner space of the main body pipe into two spaces, and the vent hole is used to communicate the two spaces.

[0009] Preferably, a coil framework is fixedly installed in the actuating pipe, a permanent magnet main valve core is slidingly fitted in the middle of the coil framework, an electromagnetic winding is wound on the outer side of the coil framework, the electromagnetic winding is in magnetic force cooperation with the permanent magnet main valve core and the coil framework, and is used to drive the permanent magnet main valve core to slide along the axial direction of the coil framework; a return spring is elastically arranged between the permanent magnet main valve core and the horizontal plate, both ends of the return spring are fixedly fitted with the permanent magnet main valve core and the horizontal plate, and the bottom of the permanent magnet main valve core is provided with a protrusion which can be inserted into the vent hole to block the vent hole; a position detection switch is further embedded in the connection position of the main body pipe and the actuating pipe, and the position detection switch is used to detect the position of the permanent magnet main valve core.

[0010] Preferably, the clamping ring is fixedly installed at the end of the actuating pipe away from the main body pipe, and a sealing cover plate is sealingly fixed on the upper surface of the clamping ring; the manual valve seat is slidingly arranged on the inner side of the clamping ring, and the first clamping head and the second clamping head are located at both ends of the manual valve seat; a middle shaft is coaxially fixedly installed on the manual valve seat and in contact with the permanent magnet main valve core, an intermediate compression spring is sleeved around the middle shaft, an intermediate compression spring support plate is slidingly sleeved on the circumferential surface of the middle shaft, and the intermediate compression spring support plate is fixedly fitted with the coil framework.

[0011] Preferably, both ends of the intermediate compression spring are fixedly fitted with the manual valve seat and the intermediate compression spring support plate; and both ends of the axial channel penetrate through the upper and lower sides of the clamping ring.

[0012] Preferably, the manual valve seat is further in sliding fit with the sealing cover plate, the circumferential edge of the sealing cover plate is fixedly sleeved with an intermediate support sleeve, an intermediate cover plate and a top cover plate are fixedly installed on the inner wall of the intermediate support sleeve, a gear column is rotatably installed between the opposite faces of the intermediate cover plate and the top cover plate, and a toothed disc is coaxially fixed on the upper surface of the manual valve seat and in sliding fit with the gear column.

[0013] Preferably, a toothed ring is rotatably installed at the center position between the opposite faces of the intermediate cover plate and the top cover plate, a spring is elastically fitted on the inner side of the toothed ring, the center point of the spring is fixedly fitted with the intermediate cover plate, and the edge of the spring is fixedly fitted with the toothed ring.

[0014] Preferably, an electromagnet capable of being magnetically attracted to the toothed ring is arranged on the inner side of the intermediate cover plate, and a driving gear and a ratchet wheel assembly meshing with the toothed ring are further rotatably installed between the opposite faces of the intermediate cover plate and the top cover plate.

[0015] Preferably, a driving motor is fixedly installed on the top cover plate, the output shaft of the driving motor is fixedly fitted with the driving gear, the inner ratchet wheel of the ratchet wheel assembly is fixedly and synchronously rotated with the gear column through a rotating shaft, the outer ratchet wheel of the ratchet wheel assembly is in gear meshing transmission with the toothed ring, a manual wheel is coaxially fixed on the manual valve seat, a transparent dust cover is sleeved on the outer side of the manual wheel, and the transparent dust cover is fixed on the intermediate support sleeve in a detachable manner.

[0016] Compared with the prior art, the present application has the following beneficial effects: (1) The present application adopts TDLAS laser detection technology, which only responds to methane gas, can avoid false positives and false negatives caused by humidity and temperature changes in traditional semiconductor or catalytic sensors in principle, and realizes accurate detection. This high selectivity sensing method can ensure the accuracy of gas concentration information and provide a reliable basis for subsequent control actions; (2) The software part of the present application designs a four-level concentration grading mechanism, different concentrations correspond to different alarm prompts, the number of indicator lights, valve cutting and window opening linkage, from slight early warning to serious high risk, there are clear response measures. This multi-level protection mechanism is more scientific than the traditional "one-size-fits-all" alarm and cutting method, which can avoid the inconvenience caused by overreaction, while ensuring rapid disposal in dangerous environments; (3) The permanent magnet main valve core + return spring structure is adopted in the emergency cut-off valve of the present application, which cooperates with the position detection switch, not only can ensure the manual closing ability when the electromagnetic system fails, but also can judge whether the electromagnetic drive is effective by detecting the valve core state, and trigger the fault alarm in time. Compared with the traditional structure which only relies on electromagnet, the reliability and safety redundancy are greatly improved; (4) The present application can not only automatically drive the alarm and LED indicator light, but also can drive the window motor to realize ventilation and gas exchange, and has the remote control ability of mobile terminal APP. The mobile terminal APP can display the methane concentration in the air in real time, and automatically contact the gas company in dangerous moments. Compared with the traditional device which can only issue an alarm or be passively cut off, the present application provides whole-chain linkage protection, which greatly improves the safety; (5) Even if there is no one on site, the present application can still realize valve closure through motor driving; and in an emergency, the user can also directly operate the manual wheel to ensure that the device can always cut off the gas pipeline. This multi-path operation method significantly enhances the applicability and reliability of the device in different working conditions, avoiding the defects of single control mode. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The software control flowchart of the present application.

[0018] Figure 2 The structure schematic diagram of the emergency cut-off valve of the present application.

[0019] Figure 3 The structure schematic diagram of the horizontal plate of the present application.

[0020] Figure 4 The structure schematic diagram of A in the present application. Figure 3

[0021] Figure 5 The structure schematic diagram of the intermediate top spring of the present application.

[0022] Figure 6 The structure schematic diagram of the axial channel of the present application. ​

[0023] 101 - main body tube; 102 - actuating tube; 103 - position detection switch; 104 - cross plate; 105 - first circular arc plate; 106 - air hole; 107 - second circular arc plate; 108 - reset spring; 109 - permanent magnetic main valve core; 110 - coil framework; 111 - intermediate support sleeve; 112 - transparent dust cover; 113 - manual wheel; 114 - driving motor; 115 - top cover plate; 116 - middle shaft; 117 - intermediate top spring support plate; 118 - intermediate top spring; 119 - manual valve seat; 120 - sealing cover plate; 121 - intermediate cover plate; 122 - ratchet assembly; 123 - gear column; 124 - driving gear; 125 - tooth ring; 126 - clockwork; 127 - tooth disc; 128 - clamping seat ring; 129 - axial passage; 130 - circumferential passage; 131 - first clamping head; 132 - second clamping head. DETAILED DESCRIPTION

[0024] The technical solutions of the present application are further illustrated below in conjunction with the accompanying drawings. Figures 1-6 The technical solutions of the present application are further illustrated below in conjunction with the accompanying drawings.

[0025] The present application provides a kind of gas cut-off valve device based on laser monitoring and communication linkage, including software and hardware two parts, software part mainly includes gas collection detection module, detection result post-processing module and mobile terminal APP;Hardware part mainly includes laser detector, single-chip microcomputer control integrated board, alarm, three led pilot lamp, window switch driving motor (motor type needs to be matched according to window type), emergency cut-off valve.

[0026] The mobile APP contained in the software part can not only receive the current methane concentration value in the air in real time, but also can control the alarm, the LED indicator light, the opening and closing of the window and the on-off of the emergency shut-off valve; when the laser detector detects that the methane gas concentration in the air is higher than 15%, the mobile APP will display the words "severe hypoxia asphyxia, burning risk", and will automatically contact the gas company or dial 119, and then all three LED indicator lights will be lit, the emergency shut-off valve will be driven to close the gas pipeline, the alarm will be turned on (the above four operations are not in order, and are performed simultaneously), and after the above operations, the control driving motor opens the window; when the laser detector detects that the methane gas concentration in the air is in the interval of 5%~15%, the mobile APP will display the words "moderate hypoxia, high risk of explosion / burning", and then two LED indicator lights will be lit, the emergency shut-off valve will be driven to close the gas pipeline, and the alarm will be turned on (the above four operations are not in order, and are performed simultaneously), and after the above operations, the control driving motor opens the window; when the laser detector detects that the methane gas concentration in the air is in the interval of 1%~5%, the mobile APP will display the words "hypoxia warning", and then one LED indicator light will be lit, the emergency shut-off valve will be driven to close the gas pipeline, and the alarm will be turned on (the above four operations are not in order, and are performed simultaneously), and after the above operations, the control driving motor opens the window; when the laser detector detects that the methane gas concentration in the air is lower than 1%, the mobile APP will display the words "basically no risk", all LED indicator lights remain off, the emergency shut-off valve does not work, the alarm does not alarm, and the window remains closed.

[0027] The sensor of the laser detector uses TDLAS detection technology, which only reacts to methane gas, and solves the problems of false positives and false negatives from the technical principle. The window driving motor is selected according to different types of windows, such as DC speed reduction motor for casement windows and sliding windows, stepping motor for suspended windows and precise control position scenes, and DC brushless motor for large size sliding windows. The working conditions of the driving motor are controlled by the single-chip control integrated board through the Bluetooth module for remote control. The control signal transmission of the alarm and the LED indicator light is integrated on the single-chip control integrated board, and a simple buzzer can be selected for the alarm. Three indicator lights are selected here, and the higher the detected methane concentration, the more indicator lights are lit.

[0028] The laser detector (corresponding to the gas collection and detection module in the software part) is signal connected with the single-chip control integrated board (corresponding to the detection result post-processing module in the software part) for transmitting methane concentration signals. The single-chip control integrated board is signal connected with the mobile APP in the software part for data interaction and remote control. The single-chip control integrated board is signal connected with the alarm, the LED indicator light, the emergency shut-off valve and the window switch driving motor for realizing sound and light alarm, gas shut-off and ventilation linkage.

[0029] The emergency cut-off valve comprises a main body pipe 101, a driving pipe 102 vertically fixedly connected and communicated on the main body pipe 101, a Z-shaped partition plate fixedly installed on the inner wall of the main body pipe 101, and a ventilation hole 106 formed in the Z-shaped partition plate; the ventilation hole 106 is blocked or opened by a driving assembly arranged in the driving pipe 102, and the driving assembly comprises a manual valve seat 119 and a clamping seat ring 128; a first clamping head 131 and a second clamping head 132 are fixedly installed on the circumferential surface of the manual valve seat 119; two circumferential channels 130 and two axial channels 129 are symmetrically formed about the center of the clamping seat ring 128 on the inner side of the clamping seat ring 128, the corresponding axial channel 129 and circumferential channel 130 are arranged in T-shaped communication, and the second clamping head 132 is in conductive contact with the inner wall of the circumferential channel 130 and the axial channel 129. The Z-shaped partition plate comprises a horizontal plate 104 arranged along the axial direction of the main body pipe 101, a first circular arc plate 105 and a second circular arc plate 107 fixedly installed at the two ends of the horizontal plate 104, and the first circular arc plate 105 and the second circular arc plate 107 are symmetrically arranged about the center of the horizontal plate 104; a ventilation hole 106 is formed at the center of the horizontal plate 104, and the Z-shaped partition plate is used to divide the space in the main body pipe 101 into two spaces, and the ventilation hole 106 is used to communicate the two spaces. A coil framework 110 is fixedly installed in the driving pipe 102, a permanent magnet main valve core 109 is slidably arranged in the middle of the coil framework 110, an electromagnetic winding is wound on the outer side of the coil framework 110, the electromagnetic winding is in magnetic force cooperation with the permanent magnet main valve core 109 through the coil framework 110, and is used to drive the permanent magnet main valve core 109 to slide along the axial direction of the coil framework 110; a return spring 108 is elastically arranged between the permanent magnet main valve core 109 and the horizontal plate 104, the two ends of the return spring 108 are fixedly arranged with the permanent magnet main valve core 109 and the horizontal plate 104, and the bottom of the permanent magnet main valve core 109 is provided with a protrusion which can be inserted into the ventilation hole 106 to block the ventilation hole 106; a position detection switch 103 is further embedded in the connecting position of the main body pipe 101 and the driving pipe 102, and the position detection switch 103 is used to detect the position of the permanent magnet main valve core 109. The clamping seat ring 128 is fixedly installed at the end of the driving pipe 102 away from the main body pipe 101, and a sealing cover plate 120 is sealingly fixed on the upper surface of the clamping seat ring 128; the manual valve seat 119 is slidably arranged on the inner side of the clamping seat ring 128, and the first clamping head 131 and the second clamping head 132 are located at the two ends of the manual valve seat 119; a middle shaft 116 in contact with the permanent magnet main valve core 109 is coaxially fixedly installed on the manual valve seat 119, an intermediate tension spring 118 is sleeved around the middle shaft 116, a middle tension spring support plate 117 is slidably sleeved on the circumferential surface of the middle shaft 116, and the middle tension spring support plate 117 is fixedly arranged with the coil framework 110. The two ends of the intermediate tension spring 118 are fixedly arranged with the manual valve seat 119 and the middle tension spring support plate 117; the two ends of the axial channel 129 penetrate through the upper and lower sides of the clamping seat ring 128.

[0030] The manual valve seat 119 is also in sliding fit with the sealing cover plate 120, the circumferential edge of the sealing cover plate 120 is fixedly sleeved with the intermediate support sleeve 111, the inner wall of the intermediate support sleeve 111 is fixedly installed with the intermediate cover plate 121 and the top cover plate 115, the gear column 123 is rotatably installed between the opposite faces of the intermediate cover plate 121 and the sealing cover plate 120, the upper surface of the manual valve seat 119 is coaxially fixed with the toothed disc 127, the toothed disc 127 and the gear column 123 are in sliding fit transmission, the center position between the opposite faces of the intermediate cover plate 121 and the top cover plate 115 is rotatably installed with the toothed ring 125, the inner side of the toothed ring 125 is elastically fitted with the clock spring 126, the center point of the clock spring 126 is fixedly fitted with the intermediate cover plate 121, the edge of the clock spring 126 is fixedly fitted with the toothed ring 125, the inner side of the intermediate cover plate 121 is provided with the electromagnet capable of being magnetically attracted with the toothed ring 125, the opposite faces of the top cover plate 115 and the intermediate cover plate 121 are also rotatably installed with the driving gear 124 and the ratchet wheel assembly 122 meshing with the toothed ring 125, the driving motor 114 is fixedly installed on the top cover plate 115, the output shaft of the driving motor 114 is fixedly fitted with the driving gear 124, the inner ratchet wheel of the ratchet wheel assembly 122 is fixedly and synchronously rotated with the gear column 123 through the rotating shaft, the outer ratchet wheel of the ratchet wheel assembly 122 is in gear meshing transmission with the toothed ring 125, the manual wheel 113 is also coaxially fixed on the manual valve seat 119, the outer side of the manual wheel 113 is sleeved with the transparent dust cover 112, the transparent dust cover 112 is fixed on the intermediate support sleeve 111 in a detachable manner.

[0031] The main pipe 101 is connected in series to the gas pipeline to be controlled, and the main pipe 101 is in an open state, that is, the permanent magnet main valve core 109 is separated from the air hole 106, and the gas in the main pipe 101 flows through the air hole 106 to the other side of the horizontal plate 104. When it is necessary to cut off the main pipe 101, the coil frame 110 is controlled to generate a magnetic force that can repel the permanent magnet main valve core 109, the coil frame 110 drives the permanent magnet main valve core 109 to move towards the air hole 106, and the reset spring 108 is compressed, so that the permanent magnet main valve core 109 keeps in contact with the air hole 106 (the contact position of the permanent magnet main valve core 109 and the air hole 106 is provided with a sealing rubber ring), and the coil frame 110 needs to be kept powered to maintain the sealing of the air hole 106. In this action, the central shaft 116 does not move, and the permanent magnet main valve core 109 is separated from the central shaft 116. At the same time, the position detection switch 103 is arranged to detect the movement state of the permanent magnet main valve core 109, if the permanent magnet main valve core 109 does not move, it means that the coil frame 110 is not effective, and then the system sends a fault alarm (the coil frame 110 is started and stopped for a moment to determine whether the coil frame 110 can drive the permanent magnet main valve core 109 to move). Or manually rotate the manual wheel 113, the manual wheel 113 drives the manual valve seat 119 to rotate, so that the second clamping head 132 on the manual valve seat 119 moves from the circumferential channel 130 to the axial channel 129, then press the manual wheel 113 downward, so that the first clamping head 131 enters the axial channel 129, and then reverse rotate the manual wheel 113, so that the first clamping head 131 enters the circumferential channel 130. In this process, the manual valve seat 119 drives the central shaft 116 to move (at the same time, the intermediate top spring 118 is in a compressed state), the central shaft 116 drives the permanent magnet main valve core 109 to move, so that the permanent magnet main valve core 109 compresses the reset spring 108, and the permanent magnet main valve core 109 contacts and blocks the air hole 106. At this time, if you want to start remotely (after closing, the person leaves, and there is no scene on the spot), control the driving motor 114, the output shaft of the driving motor 114 drives the driving gear 124 to rotate, the driving gear 124 drives the gear ring 125 to rotate (it is need to be explained that the clockwork 126 has the toughness of movement, so it will not hinder the rotation of the gear ring 125), the gear ring 125 drives the outer gear of the ratchet assembly 122 to rotate, the outer gear of the ratchet assembly 122 can drive the inner gear to rotate, the inner gear of the ratchet assembly 122 drives the gear column 123 to rotate, and the electromagnet at the gear ring 125 is in a power-off state.Gear column 123 rotation will drive gear disc 127 rotation, gear disc 127 rotation drive manual valve seat 119 rotation, manual valve seat 119 drive first clamp head 131 from the circumferential passage 130 to the axial passage 129, under the elastic force of the intermediate top spring 118, the first clamp head 131 will be separated from the axial passage 129, and then make the second clamp head 132 re-enter into the axial passage 129, at this time the second clamp head 132 and the circumferential passage 130 and the axial passage 129 contact conductive, so as to be the drive motor 114 power off signal, at this time the drive motor 114 stop working, at the same time the manual valve seat 119 has moved to the position with the lower surface of the intermediate cover plate 121 contact (in fact, the gear disc 127 with the intermediate cover plate 121 contact, the process of gear disc 127 on the gear column 123 rotation sliding). In addition, you can also choose to manually rotate the output shaft of the drive motor 114 (that is, not to use the drive motor 114), or manually rotate the drive gear 124, rotate the gear ring 125 (opposite to the above rotation direction), make the clockwork 126 in the force storage state, then start the electromagnet at the gear ring 125, through the magnetic friction to attract to limit the gear ring 125 rotation on the intermediate cover plate 121 (the gear ring 125 and the rotating contact surface of the intermediate cover plate 121 exist friction, through the magnetic force to increase the normal pressure, and then increase the friction, so that the gear ring 125 and the intermediate cover plate 121 between the fixed), the clockwork 126 in the process of force storage, the outer ratchet of the ratchet assembly 122 is unable to drive the inner ratchet rotation, so only when the electromagnet at the gear ring 125 power off, to release the gear ring 125, let the gear ring 125 reverse rotation, through the ratchet assembly 122 drive gear column 123 rotation. The above process is for the middle shaft 116 to move to the top position, and then can through the coil framework 110 fast drive the permanent magnet main valve core 109 movement, realize the main pipe 101 on-off action.

Claims

1. A gas shut-off valve device based on laser monitoring and communication linkage, comprising software and hardware two parts, characterized in that: The hardware part comprises a laser detector, a single-chip microcomputer control integrated board, an alarm, three LED indicator lights, a window switch driving motor and an emergency cut-off valve; the laser detector is signal connected with the single-chip microcomputer control integrated board for transmitting a methane concentration signal; the single-chip microcomputer control integrated board is signal connected with a mobile terminal APP in the software part for data interaction and remote control; and the single-chip microcomputer control integrated board is signal connected with the alarm, the LED indicator lights, the emergency cut-off valve and the window switch driving motor for realizing sound and light alarm, gas cut-off and ventilation linkage. The emergency cut-off valve comprises a main pipe (101), an actuating pipe (102) vertically fixed and communicated on the main pipe (101), a Z-shaped partition plate fixedly installed on the inner wall of the main pipe (101), and a ventilation hole (106) formed in the Z-shaped partition plate; the ventilation hole (106) is blocked or opened by an actuating assembly arranged in the actuating pipe (102), and the actuating assembly comprises a manual valve seat (119) and a clamping ring (128); a first clamping head (131) and a second clamping head (132) are fixedly installed on the circumferential surface of the manual valve seat (119); two circumferential channels (130) and two axial channels (129) are formed in the inner side of the clamping ring (128) and symmetrically arranged about the center point of the clamping ring (128), and the corresponding axial channel (129) and circumferential channel (130) are arranged in T-shaped communication, and the second clamping head (132) is in conductive contact with the inner walls of the circumferential channel (130) and the axial channel (129); The manual valve seat (119) is further in sliding fit with a sealing cover plate (120), the circumferential edge of the sealing cover plate (120) is fixedly sleeved with an intermediate support sleeve (111), the inner wall of the intermediate support sleeve (111) is fixedly installed with an intermediate cover plate (121) and a top cover plate (115), a gear column (123) is rotatably installed between the opposite surfaces of the intermediate cover plate (121) and the sealing cover plate (120), a toothed disc (127) is coaxially fixed on the upper surface of the manual valve seat (119), and the toothed disc (127) is in sliding engagement with the gear column (123); a toothed ring (125) is rotatably installed at the center position between the opposite surfaces of the intermediate cover plate (121) and the top cover plate (115), a spring (126) is elastically fitted to the inner side of the toothed ring (125), the center point of the spring (126) is fixedly fitted with the intermediate cover plate (121), and the edge of the spring (126) is fixedly fitted with the toothed ring (125).

2. The gas shut-off valve device based on laser monitoring and communication linkage according to claim 1, characterized in that: The Z-shaped partition plate comprises a horizontal plate (104) arranged along the axial direction of the main pipe (101), a first circular arc plate (105) and a second circular arc plate (107) fixedly installed at the two ends of the horizontal plate (104) and symmetrically arranged about the center point of the horizontal plate (104), and a ventilation hole (106) formed at the center point of the horizontal plate (104); the Z-shaped partition plate is used for dividing the inner space of the main pipe (101) into two spaces, and the ventilation hole (106) is used for connecting the two spaces.

3. The gas shut-off valve device based on laser monitoring and communication linkage according to claim 2, characterized in that: The coil framework (110) is fixedly installed in the actuating pipe (102), the middle part of the coil framework (110) is slidably matched with the permanent magnet main valve core (109), the outer side of the coil framework (110) is wound with an electromagnetic winding, the electromagnetic winding is matched with the coil framework (110) and the permanent magnet main valve core (109) to form a magnetic force matching, for driving the permanent magnet main valve core (109) to slide along the axis direction of the coil framework (110), the permanent magnet main valve core (109) and the horizontal plate (104) are elastically matched with the reset spring (108), the two ends of the reset spring (108) are fixedly matched with the permanent magnet main valve core (109) and the horizontal plate (104), and the bottom of the permanent magnet main valve core (109) is provided with a protrusion capable of being inserted into the sealing air passage hole (106), for plugging the air passage hole (106); wherein the connecting position of the main pipe (101) and the actuating pipe (102) is also embedded with a position detection switch (103), the position detection switch (103) is used for detecting the position of the permanent magnet main valve core (109).

4. The gas shut-off valve device based on laser monitoring and communication linkage according to claim 3, characterized in that: The actuating pipe (102) is fixedly installed with a clamping seat ring (128) away from the main pipe (101), and the upper surface of the clamping seat ring (128) is sealingly fixed with a sealing cover plate (120). The manual valve seat (119) is slidably arranged on the inner side of the clamping seat ring (128), and the first clamping head (131) and the second clamping head (132) are located at the two ends of the manual valve seat (119). The manual valve seat (119) is coaxially fixedly installed with a middle shaft rod (116) in contact with the permanent magnet main valve core (109). The middle shaft rod (116) is annularly sleeved with a middle tension spring (118). The circumferential surface of the middle shaft rod (116) is slidably sleeved with a middle tension spring support plate (117), and the middle tension spring support plate (117) is fixedly matched with the coil framework (110).

5. The gas shut-off valve device based on laser monitoring and communication linkage according to claim 4, characterized in that: The two ends of the middle tension spring (118) are fixedly matched with the manual valve seat (119) and the middle tension spring support plate (117). The two ends of the axial channel (129) penetrate through the upper and lower sides of the clamping seat ring (128).

6. The gas shut-off valve device based on laser monitoring and communication linkage according to claim 5, characterized in that: The inner side of the middle cover plate (121) is provided with an electromagnet capable of being magnetically attracted to the tooth ring (125). The opposite surfaces of the top cover plate (115) and the middle cover plate (121) are also rotatably installed with a drive gear (124) and a ratchet assembly (122) engaged with the tooth ring (125).

7. The gas shut-off valve device based on laser monitoring and communication linkage according to claim 6, characterized in that: The top cover plate (115) is fixedly installed with a drive motor (114), and the output shaft of the drive motor (114) is fixedly matched with the drive gear (124). The inner ratchet of the ratchet assembly (122) and the gear column (123) are fixedly and synchronously rotated through the rotating shaft. The outer ratchet of the ratchet assembly (122) and the tooth ring (125) are gear meshed and transmitted. The manual valve seat (119) is also coaxially fixed with a manual wheel (113), and the outer side of the manual wheel (113) is sleeved with a transparent dust cover (112) fixed on the middle support sleeve (111) in a detachable manner.

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