Intelligent safety valve for gas pipeline

Abstract

The utility model relates to pipeline valve technical field discloses a kind of gas pipeline intelligent safety valves, comprising: valve body, passage is provided in valve body, the both ends of passage are respectively provided with air inlet and gas outlet, passage is provided with motor valve for controlling passage on / off in, motor valve includes output shaft and sealing valve plate, first transmission mechanism is arranged between output shaft and sealing valve plate, output shaft is driven sealing valve plate to block up / open passage by first transmission mechanism when rotating, manually piece and second transmission mechanism are arranged on valve body, part of manually piece is exposed to valve body, manually piece is driven by external force, manually piece is driven output shaft rotation by second transmission mechanism, to make output shaft drive sealing valve plate to block up / open passage.The utility model gas pipeline intelligent safety valve, by motor valve electric control passage on-off, manually piece can also manually control the on-off of passage, control mode is flexible, when motor valve failure, ensure that safety valve can be cut off, and safety is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline valve technical field, specifically, a kind of gas pipeline intelligent safety valve. BACKGROUND

[0002] At present, the valve device for cutting off gas applied to gas pipeline is usually composed of solenoid valve and gas alarm, and when gas alarm detects gas leakage, it sends signal to solenoid valve at the same time when alarm occurs, solenoid valve starts as soon as it receives the signal sent by gas alarm, and cuts off gas passage. The valve device combined by the above-mentioned solenoid valve and gas alarm can cut off gas passage according to whether gas leakage occurs when working, but it cannot detect the pressure of gas, and when the pressure of gas in gas passage is at high or low abnormal pressure, the above-mentioned valve device cannot realize automatic cut-off of gas, and there is certain safety hazard. In addition, when valve control is abnormal and automatic cut-off cannot be realized, some existing gas pipeline valves cannot be manually closed, and there is safety hazard. SUMMARY

[0003] To solve at least one aspect of the above problems, the utility model provides a kind of gas pipeline intelligent safety valve, comprising: valve body, the passage is arranged in the valve body, the passage is respectively provided with gas inlet and gas outlet at both ends, the passage is provided with motor valve for controlling the passage on / off, the motor valve includes output shaft and sealing valve plate, first transmission mechanism is arranged between the output shaft and the sealing valve plate, the output shaft is rotated and drives the sealing valve plate to block / open the passage by the first transmission mechanism, manually piece and second transmission mechanism are arranged on the valve body, part of the manually piece is exposed to the valve body, the manually piece is driven by external force, the manually piece drives the output shaft to rotate by the second transmission mechanism, so that the output shaft drives the sealing valve plate to block / open the passage;The utility model gas pipeline intelligent safety valve, the passage is turned on / off by motor valve electric control, and the passage can also be turned on / off manually by manually piece, control mode is flexible, when motor valve fails, ensure that safety valve can be cut off, and safety is high.

[0004] Optionally, the first transmission mechanism includes external thread arranged on the output shaft and nut in screw connection with the external thread, the nut is slidably arranged along the axial direction of the output shaft, and the sealing valve plate is connected with the nut.

[0005] Optionally, the manual member is a manual lever, the second transmission mechanism comprises a gear unit connected with the output shaft, one end of the manual member is exposed outside the valve body, the other end of the manual member is detachably connected with the gear unit, when the manual member is connected with the gear unit, external force rotates the manual member and drives the output shaft to rotate simultaneously through the gear unit.

[0006] Optionally, the gear unit comprises a first gear and a second gear, the first gear is connected with the output shaft and rotates synchronously, the second gear is engaged with the first gear, the second gear is provided with an insertion slot, one end of the manual member is provided with an insertion part corresponding to the insertion slot, when the insertion part is inserted into the insertion slot, the manual member rotates synchronously with the second gear.

[0007] Optionally, the part of the manual member exposed outside the valve body is provided with a manual rotating disc.

[0008] Optionally, the manual member is arranged on the valve body in the axial direction of the manual member, a sealing ring is arranged between the manual member and the valve body, an outer flange is arranged on the manual member, and an elastic member is arranged between the outer flange and the valve body.

[0009] Optionally, when the sealing valve plate blocks the passage, the passage is divided into a first passage and a second passage, the first passage is communicated with the air inlet, and the second passage is communicated with the air outlet, the valve body is provided with a first air pressure sensor and a second air pressure sensor for controlling the action of the motor valve, the first air pressure sensor is communicated with the first passage, and the second air pressure sensor is communicated with the second passage.

[0010] Optionally, the valve body is provided with a sealing gasket for abutting and sealing against the sealing valve plate, the sealing gasket is made of rubber or silicone, the valve body is provided with a compression ring for fixing the sealing gasket, the sealing gasket comprises an integrally formed mounting ring and an elastic sealing part, the mounting ring is fixedly installed between the valve body and the compression ring, the elastic sealing part is arc-shaped, an arc-shaped convex surface is arranged on the side of the elastic sealing part close to the sealing valve plate, and an arc-shaped concave surface is arranged on the side of the elastic sealing part away from the sealing valve plate.

[0011] Optionally, the valve body comprises a main valve body and a valve cover connected with each other, the passage is formed between the main valve body and the valve cover, the valve cover is provided with a detachable outer cover, and one end of the manual member is arranged in a cavity between the valve cover and the outer cover.

[0012] Optionally, the valve body is provided with a detection mechanism for detecting the blocking / opening state of the sealing valve plate. The detection mechanism includes a first magnetic switch, a second magnetic switch, and a magnet. The magnet is disposed on the sealing valve plate and moves synchronously with the sealing valve plate. When the sealing valve plate is in the blocking state, the first magnetic switch detects the magnet; when the sealing valve plate is opened to the correct position, the second magnetic switch detects the magnet.

[0013] Compared to existing technologies, the intelligent safety valve for gas pipelines in this invention allows for flexible control via both an electric motor valve and a manual control mechanism. This ensures the safety valve can shut off in case of motor valve failure, providing high safety. The other end of the manual control mechanism is detachably connected to a gear unit. When connected, external force rotates the manual control mechanism, which in turn drives the output shaft to rotate. When disconnected, the gear unit does not move the manual control mechanism, preventing interference between the manual control mechanism and the electric control components when manual control is not required. The portion of the manual control mechanism exposed outside the valve body... A manual turntable is provided for easy manual control. When either the first or second pressure sensor detects an excessively high or low pressure, it transmits an electrical signal to the motor valve, causing the motor valve to close and thus cutting off the passage, making it safer and more intelligent to use. The mounting ring is fixedly installed between the valve body and the pressure ring, ensuring a secure sealing gasket and improving sealing reliability. The valve body is equipped with a detection mechanism to detect the blocking / opening status of the sealing valve plate, ensuring that the sealing valve plate can operate correctly when blocking / opening, thus improving the reliability of this safety valve. Attached Figure Description

[0014] Figure 1 This is a perspective view of the intelligent safety valve for gas pipelines according to this utility model;

[0015] Figure 2 Cross-sectional view of the intelligent safety valve for gas pipelines according to this utility model. Figure 1 ;

[0016] Figure 3 for Figure 2 Enlarged view of section A in the middle;

[0017] Figure 4 for Figure 2 Enlarged view of section B;

[0018] Figure 5 Cross-sectional view of the intelligent safety valve for gas pipelines according to this utility model. Figure 2 ;

[0019] Figure 6 for Figure 5 Enlarged view of section C;

[0020] Figure 7 is a sectional view of the intelligent safety valve of the gas pipeline of the utility model Figure 3 ;

[0021] Figure 8 is a structure schematic view of the manual part of the intelligent safety valve of the gas pipeline of the utility model

[0022] Figure 9 is a structure schematic view of the plug-in part of the intelligent safety valve of the gas pipeline of the utility model

[0023] Figure 10 is a structure schematic view of the detection mechanism part of the intelligent safety valve of the gas pipeline of the utility model

[0024] The corresponding component name of each reference numeral in the figure is: 1 is a valve body, 11 is a main valve body, 12 is a valve cover, 101 is a passage, 1011 is a first passage, 1012 is a second passage, 2 is a motor valve, 102 is an air inlet, 103 is an air outlet, 21 is an output shaft, 211 is an external thread, 22 is a sealing valve plate, 3 is a manual part, 301 is a plug-in part, 302 is a manual rotating disc, 303 is an outer flange, 4 is a screw nut, 51 is a first gear, 52 is a second gear, 521 is a plug-in groove, 6 is a sealing ring, 7 is an elastic part, 71 is a first air pressure sensor, 72 is a second air pressure sensor, 8 is a sealing gasket, 81 is a pressing ring, 82 is a mounting ring, 83 is an elastic sealing part, 831 is an arc convex surface, 832 is an arc concave surface, 9 is an outer cover, 91 is a first magnetic switch, 92 is a second magnetic switch, 93 is a magnet, and 10 is a motor. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the specific embodiments of the utility model are described in detail below with reference to the drawings.

[0026] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "upper", "lower" and the like is based on the orientation or position relationship in the normal use of the product.

[0027] The terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features.

[0028] Reference Figures 1-10The utility model discloses a kind of gas pipeline intelligent safety valves, comprising: valve body 1, passage 101 is provided in valve body 1, the both ends of passage 101 are respectively provided with air inlet 102 and gas outlet 103, motor valve 2 for controlling passage 101 on-off is provided in passage 101, motor valve 2 includes output shaft 21 and sealing valve plate 22, the motor shaft of motor 10 in motor valve 2 is rotated by several transmission gears and drives output shaft 21;First transmission mechanism is arranged between output shaft 21 and sealing valve plate 22, and sealing valve plate 22 is closed / opened passage 101 by first transmission mechanism when output shaft 21 rotates, and passage is controlled by the forward / reverse rotation of output shaft 21 Close / opened;Manual piece 3 and second transmission mechanism are provided on valve body 1, and a part of manual piece 3 is exposed to valve body 1, and manual piece 3 is driven by external force, and manual piece 3 rotates output shaft 21 by second transmission mechanism, so that output shaft 21 drives sealing valve plate 22 to close / opened passage 101;The utility model gas pipeline intelligent safety valve, passage on-off is electrically controlled by motor valve, and passage on-off can also be manually controlled by manual piece, and control mode is flexible, and when motor valve fails, manual control is ensured to cut off safety valve, and safety is high.

[0029] Referring to Figure 1 、 Figure 5 、 Figure 6 And Figure 10 , first transmission mechanism includes outer thread 211 arranged on output shaft 21 and nut 4 threadedly connected with outer thread 211, and nut 4 is slidably arranged along the axial direction of output shaft 21, and nut does not rotate when sliding axially, sealing valve plate 22 is connected with nut 4, and nut drives sealing valve plate 22 to move when sliding, to close / opened passage 101;Manual piece 3 is manual rod, and second transmission mechanism includes gear unit connected with output shaft 21, and one end of manual piece 3 is exposed to valve body 1, so that personnel manually operate manual piece 3;The other end of manual piece 3 is disconnectably connected with gear unit, when manual piece 3 is connected with gear unit, external force rotates manual piece 3 and simultaneously rotates output shaft 21 by gear unit;When manual piece 3 is disconnected with gear unit, gear unit does not drive manual piece 3 to move, so that manual piece 3 and electric control component do not interfere when manual control is not needed;Gear unit includes first gear 51 and second gear 52, first gear 51 is connected with output shaft 21 and rotates synchronously, second gear 52 is engaged with first gear 51, second gear 52 is provided with insertion slot 521, one end of manual piece 3 is provided with insertion part 301 corresponding to insertion slot 521, when insertion part 301 is inserted with insertion slot 521, manual piece 3 rotates synchronously with second gear 52;The shape of insertion slot 521 matches with insertion part 301, and insertion slot 521 is polygonal slot or spline slot;The part of manual piece 3 exposed to valve body 1 is provided with manual turntable 302, to facilitate personnel operation to manually control.

[0030] Referring to Figure 1 and Figure 6 , the manual member 3 is arranged on the valve body 1 along the axial direction of the manual member 3, and a sealing ring 6 is arranged between the manual member 3 and the valve body 1 to avoid gas leakage and improve safety. In this embodiment, the sealing ring 6 is sleeved with three sealing rings along the axial direction of the manual member 3. An outer flange 303 is arranged on the manual member 3, and an elastic member 7 is arranged between the outer flange 303 and the valve body 1. In this embodiment, the elastic member 7 is a compression spring. The lower end of the manual member 3 is driven to be separated from the gear unit by the elastic force of the elastic member 7. When manual control is needed, the manual member 3 is first pressed down, the lower part of the manual member 3 is inserted into the insertion slot 521, and then the manual member 3 is rotated to drive the output shaft 21 to rotate, so as to control the sealing valve plate 22 to block / open the passage 101. The direction in which the manual member 3 needs to be rotated when blocking / opening can be marked on the valve body.

[0031] Referring to Figure 1 and Figure 7 , the sealing valve plate 22 divides the passage 101 into a first passage 1011 and a second passage 1012 when blocking the passage 101. The first passage 1011 is in communication with the gas inlet 102, and the second passage 1012 is in communication with the gas outlet 103. A first gas pressure sensor 71 and a second gas pressure sensor 72 are arranged on the valve body 1 to control the action of the motor valve 2. The first gas pressure sensor 71 is in communication with the first passage 1011, and the second gas pressure sensor 72 is in communication with the second passage 1012. When any one of the first gas pressure sensor or the second gas pressure sensor detects that the gas pressure is too large (exceeding the preset normal gas pressure value) or too small (the gas pressure is lower than the preset normal gas pressure value), the first gas pressure sensor or the second gas pressure sensor transmits an electric signal to the motor valve, so that the motor valve is actuated to be closed, thereby cutting off the passage, and the use is safer and more intelligent.

[0032] Referring to Figures 1-4The valve body 1 is provided with a sealing gasket 8 for sealing against the sealing valve plate 22. The sealing gasket 8 is made of rubber or silicone. The valve body 1 is provided with a pressing ring 81 for fixing the sealing gasket 8. The sealing gasket 8 comprises an integrated mounting ring 82 and an elastic sealing portion 83. The mounting ring 82 is fixed between the valve body 1 and the pressing ring 81. The sealing gasket 8 is stably mounted, and the reliability of the sealing is improved. The elastic sealing portion 83 is arc-shaped. The elastic sealing portion 83 is provided with an arc-shaped convex surface 831 on the side close to the sealing valve plate 22. The elastic sealing portion 83 is provided with an arc-shaped concave surface 832 on the side away from the sealing valve plate 22. When the sealing valve plate 22 is closed, the elastic sealing portion 83 is pressed downward by the sealing valve plate 22. The elastic sealing portion 83 has an upward restoring elastic force after being deformed under pressure. The arc-shaped convex surface 831 is upwardly abutted on the sealing valve plate 22 through the elastic force, and the sealing performance is improved. In addition, the arc-shaped concave surface 832 is subjected to the gas pressure of the first channel 1011. The elastic sealing portion 83 is upwardly abutbed on the sealing valve plate 22 through the gas, and the sealing performance is further improved.

[0033] Referring to Figure 1 and Figure 7 , the valve body 1 comprises a main valve body 11 and a valve cover 12 connected with each other and fixed by bolts. The channel 101 is formed between the main valve body 11 and the valve cover 12. The valve cover 12 is provided with a detachable outer cover 9, which plays a protective role of dustproof and waterproof. One end of the manual member 3 is arranged in a cavity between the valve cover 12 and the outer cover 9, so that the outer cover 9 also plays a protective role for the manually controlled components. When the outer cover 9 is not detached, it is not easy to be accidentally touched. The outer cover 9 and the valve cover 12 are fixed by bolts, which is convenient to disassemble and assemble. When manual control is needed, the outer cover 9 is only needed to be detached, and then the rotating operation of the manual member can be performed, which is low in operation difficulty.

[0034] Referring to Figure 1 , Figure 2 , Figure 9 and Figure 10, the valve body 1 is provided with a detection mechanism for detecting the sealing valve plate 22 blocking / opening state, which ensures that the sealing valve plate 22 can be actuated to the right position when blocking / opening, and improves the reliability of the safety valve operation; the detection mechanism includes a first magnetic switch 91, a second magnetic switch 92 and a magnet 93, the magnet 93 is arranged on the sealing valve plate 22 and moves synchronously with the sealing valve plate 22, when the sealing valve plate 22 is in the blocking state, the first magnetic switch 91 detects the magnet 93, that is, when the first magnetic switch 91 detects the magnet 93, it means that the sealing valve plate 22 is in the blocking position; when the sealing valve plate 22 is opened to the right position, the second magnetic switch 92 detects the magnet 93, when the first magnetic switch 91 or the second magnetic switch 92 detects the magnet, the motor valve stops and keeps the sealing valve plate 22 in the current position; the magnet 93 is arranged at the side end of the sealing valve plate 22, the first magnetic switch 91 is arranged directly below the second magnetic switch 92, the first magnetic switch 91 and the second magnetic switch 92 can use dry reed or other magnetic switch, which has simple structure and low production cost; in addition, the first magnetic switch 91 and the second magnetic switch 92 can also transmit the detected state signal to the platform system of the gas company through wires or wireless mode, so that the platform system of the gas company can accurately control the valve, if the above-mentioned state signal can accurately judge the current valve is in the closed valve or the open valve position, so as to accurately control the valve to carry out the corresponding emergency instruction, when checking the system, the position of the valve can also be clearly displayed; the above-mentioned platform system controls the valve on / off, only need to connect the signal of the motor valve to the platform system through wires or wireless mode; specifically, a control circuit board with chip will be arranged on the valve body to realize the functions of control, networking, connection with platform system and the like, the wired or wireless transmission function of the above-mentioned signal is prior art, which will not be described here.

[0035] The intelligent safety valve of the gas pipeline is provided with a motor valve electric control channel, and the on-off of the channel can be controlled by the motor valve, and the on-off of the channel can also be manually controlled by a manual control member, so that the safety valve can be cut off when the motor valve fails, and the safety is high; the other end of the manual control member is detachably connected with a gear unit, when the manual control member is connected with the gear unit, the manual control member is rotated by external force and drives the output shaft to rotate at the same time through the gear unit; when the manual control member is separated from the gear unit, the gear unit does not drive the manual control member to move, so that the manual control member and the electric control component do not interfere with each other when manual control is not needed; the part of the manual control member exposed to the valve body is provided with a manual rotating disc, so that personnel operation for manual control is facilitated; when any one of the first gas pressure sensor or the second gas pressure sensor detects that the gas pressure is too large or too small, the first gas pressure sensor or the second gas pressure sensor transmits an electric signal to the motor valve, so that the motor valve is actuated to be closed, thereby cutting off the channel, and the safety and intelligence of use are further improved; the mounting ring is fixedly installed between the valve body and the pressing ring, the sealing gasket is stably installed, and the reliability of sealing is improved; the valve body is provided with a detection mechanism for detecting the blocking / opening state of the sealing valve plate, so that the sealing valve plate can be actuated to be in place when the sealing valve plate is blocked / opened, and the reliability of the safety valve is improved.

[0036] The above only describes the preferred embodiments of the present application, and it should be pointed out that, for ordinary skilled in the technical field, without departing from the technical principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A smart safety valve for gas pipelines, characterized in that, include: A valve body (1) is provided with a channel (101) inside the valve body (1). An air inlet (102) and an air outlet (103) are respectively provided at both ends of the channel (101). A motor valve (2) for controlling the opening and closing of the channel (101) is provided inside the channel (101). The motor valve (2) includes an output shaft (21) and a sealing valve plate (22). A first transmission mechanism is provided between the output shaft (21) and the sealing valve plate (22). When the output shaft (21) rotates, it passes through the channel. The first transmission mechanism drives the sealing valve plate (22) to block / open the channel (101). The valve body (1) is provided with a manual component (3) and a second transmission mechanism. A part of the manual component (3) is exposed outside the valve body (1). The manual component (3) is driven by external force. The manual component (3) drives the output shaft (21) to rotate through the second transmission mechanism, so that the output shaft (21) drives the sealing valve plate (22) to block / open the channel (101).

2. The intelligent safety valve for gas pipelines according to claim 1, characterized in that, The first transmission mechanism includes an external thread (211) disposed on the output shaft (21) and a nut (4) threadedly connected to the external thread (211). The nut (4) is slidably disposed along the axial direction of the output shaft (21), and the sealing valve plate (22) is connected to the nut (4).

3. The intelligent safety valve for gas pipelines according to claim 1, characterized in that, The manual component (3) is a manual lever. The second transmission mechanism includes a gear unit connected to the output shaft (21). One end of the manual component (3) is exposed outside the valve body (1), and the other end of the manual component (3) is detachably connected to the gear unit. When the manual component (3) is connected to the gear unit, an external force rotates the manual component (3) and drives the output shaft (21) to rotate simultaneously through the gear unit.

4. The intelligent safety valve for gas pipelines according to claim 3, characterized in that, The gear unit includes a first gear (51) and a second gear (52). The first gear (51) is connected to the output shaft (21) and rotates synchronously. The second gear (52) meshes with the first gear (51). The second gear (52) is provided with a insertion slot (521). One end of the manual component (3) is provided with an insertion part (301) corresponding to the insertion slot (521). When the insertion part (301) is inserted into the insertion slot (521), the manual component (3) rotates synchronously with the second gear (52).

5. The intelligent safety valve for gas pipelines according to claim 3, characterized in that, The manual component (3) is provided with a manual turntable (302) on the part of the valve body (1) that is exposed.

6. The intelligent safety valve for gas pipelines according to claim 1, characterized in that, The manual component (3) is slidably disposed on the valve body (1) along its own axial direction. A sealing ring (6) is provided between the manual component (3) and the valve body (1). An outer flange (303) is provided on the manual component (3). An elastic element (7) abuts between the outer flange (303) and the valve body (1).

7. The intelligent safety valve for gas pipelines according to claim 1, characterized in that, When the sealing valve plate (22) blocks the channel (101), it divides the channel (101) into a first channel (1011) and a second channel (1012). The first channel (1011) is connected to the air inlet (102), and the second channel (1012) is connected to the air outlet (103). The valve body (1) is provided with a first pressure sensor (71) and a second pressure sensor (72) for controlling the operation of the motor valve (2). The first pressure sensor (71) is connected to the first channel (1011), and the second pressure sensor (72) is connected to the second channel (1012).

8. The intelligent safety valve for gas pipelines according to claim 1, characterized in that, The valve body (1) is provided with a sealing gasket (8) for sealing against the sealing valve plate (22). The sealing gasket (8) is made of rubber or silicone. The valve body (1) is provided with a pressure ring (81) for fixing the sealing gasket (8). The sealing gasket (8) includes an integrally formed mounting ring (82) and an elastic sealing part (83). The mounting ring (82) is fixedly installed between the valve body (1) and the pressure ring (81). The elastic sealing part (83) is arc-shaped. The side of the elastic sealing part (83) close to the sealing valve plate (22) is provided with an arc-shaped convex surface (831), and the side of the elastic sealing part (83) away from the sealing valve plate (22) is provided with an arc-shaped concave surface (832).

9. The intelligent safety valve for gas pipelines according to claim 1, characterized in that, The valve body (1) includes a main valve body (11) and a valve cover (12) connected to each other. The channel (101) is formed between the main valve body (11) and the valve cover (12). The valve cover (12) is provided with a detachable outer cover (9). One end of the manual component (3) is placed in the cavity between the valve cover (12) and the outer cover (9).

10. The intelligent safety valve for gas pipelines according to any one of claims 1-9, characterized in that, The valve body (1) is provided with a detection mechanism for detecting the blocking / opening state of the sealing valve plate (22). The detection mechanism includes a first magnetic switch (91), a second magnetic switch (92), and a magnet (93). The magnet (93) is disposed on the sealing valve plate (22) and moves synchronously with the sealing valve plate (22). When the sealing valve plate (22) is in the blocking state, the first magnetic switch (91) detects the magnet (93); when the sealing valve plate (22) is opened to the position, the second magnetic switch (92) detects the magnet (93).

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