CN114542988A - Natural gas pipe network leakage remote alarm system based on Internet of things - Google Patents
Natural gas pipe network leakage remote alarm system based on Internet of things Download PDFInfo
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- CN114542988A CN114542988A CN202210172800.6A CN202210172800A CN114542988A CN 114542988 A CN114542988 A CN 114542988A CN 202210172800 A CN202210172800 A CN 202210172800A CN 114542988 A CN114542988 A CN 114542988A
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- pipeline
- natural gas
- rod
- hole
- extensible member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
- F17D5/06—Preventing, monitoring, or locating loss using electric or acoustic means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
Abstract
The invention discloses a natural gas pipe network leakage remote alarm system based on the Internet of things, which comprises an object platform, a sensing network platform and a management platform, wherein the object platform is connected with the management platform through the sensing network platform, the object platform comprises a gas leakage alarm assembly, a pressure sensor and an intelligent valve, the gas leakage alarm assembly is connected with the pressure sensor, the gas leakage alarm assembly can drive the pressure sensor to move axially along a pipeline, the pressure sensor is used for monitoring the pressure of natural gas in the pipeline and sending the pressure to the management platform through the sensing network platform, the management platform sends a signal to the intelligent valve through the sensing network platform, and the pipeline is closed through the intelligent valve. According to the invention, the natural gas in the pipeline can be monitored in real time by using the gas leakage alarm assembly and the pressure sensor, and when the natural gas in the pipeline leaks, the intelligent valve can be controlled to close the pipeline in time by using the management platform, so that more natural gas is prevented from leaking.
Description
Technical Field
The invention relates to the technical field of natural gas metering, in particular to a natural gas pipe network leakage remote alarm system based on the Internet of things.
Background
Natural gas refers to a combustible gas existing in nature, and is a fossil fuel, including gases formed by various natural processes in an atmospheric space, a water space and a rock space (including oil field gas, gas field gas, mud volcanic gas, coal bed gas, biogenetic gas and the like). The definition of "natural gas" which has been common for a long time is a narrow definition from the energy point of view, and refers to a mixture of hydrocarbon and non-hydrocarbon gases which are naturally trapped in the formation.
At present, the traditional metering system cannot monitor the natural gas in the pipeline in real time, and cannot timely monitor the natural gas leakage in the pipeline, so that more natural gas leakage is caused.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a natural gas pipe network leakage remote alarm system based on the Internet of things.
The invention is realized by the following technical scheme:
natural gas pipe network leakage remote alarm system based on thing networking, including object platform, sensor network platform and management platform, the object platform passes through the sensor network platform and is connected with the management platform, the object platform includes gas leakage alarm subassembly, pressure sensor and intelligent valve, gas leakage alarm subassembly is connected with pressure sensor, gas leakage alarm subassembly can drive pressure sensor along pipeline axial displacement, and pressure sensor is used for monitoring the pressure of the interior natural gas of pipeline to send to the management platform through the sensor network platform, when pressure sensor monitors the pressure reduction of natural gas, the management platform passes through the sensor network platform and sends a signal to intelligent valve, closes the pipeline through intelligent valve.
Further, the object platform further comprises a temperature sensor; still be equipped with the dead lever on the pipeline inner wall, be equipped with first extensible member on the dead lever, first extensible member can be followed the axial of pipeline and stretched out and drawn back, and first extensible member still is equipped with the connector along the orientation that the interior natural gas of pipeline flows on serving, temperature sensor all is fixed in on the connector with including gas leakage alarm component.
Further, the gas leakage alarm assembly comprises an inner support rod, a movable cylinder with the outer diameter being the same as the inner diameter of the pipeline and an air pump;
the movable cylinder is sleeved on the connecting head and is connected with the connecting head through an inner supporting rod;
the outer wall of the circumference of the movable cylinder is provided with an annular groove, the annular groove and the inner wall of the pipeline form a sealing state, the output end of the air pump is inserted into the annular groove, and the pressure sensor is positioned in the annular groove;
the movable cylinder is also provided with a movable plate with the outer diameter being the same as the inner diameter of the pipeline, the movable plate is sleeved on the annular groove and can move along the axial direction of the movable cylinder;
and a sixth elastic piece is further arranged at the end part of the annular groove of the movable cylinder and connected with the movable plate.
Furthermore, a moving part and a fifth elastic part are further arranged inside the first telescopic part, the moving part penetrates through two ends of the first telescopic part along the axial direction of the first telescopic part, and the moving part can open or close two ends of the first telescopic part; and two ends of the fifth elastic piece are respectively connected with two ends of the interior of the first telescopic piece.
Further, the moving part includes second extensible member, first shutoff pole and second shutoff pole, and first shutoff pole and second shutoff pole of institute are located the both ends of second extensible member respectively, first extensible member is equipped with the through-hole with the connector link, second shutoff pole is located the through-hole, first shutoff pole is connected with the other end of first extensible member, and the axial displacement of first extensible member can be followed to second shutoff pole.
Further, the second extensible member is equipped with the sleeve towards the tip of second shutoff pole direction, sleeve and second extensible member fixed connection, and the muffjoint is on the second shutoff pole, the tip of second shutoff pole towards second extensible member direction be equipped with the inside intercommunication blind hole of second extensible member, still be equipped with on the outer wall of second shutoff pole with the first gas pocket and the second gas pocket of blind hole intercommunication, the interval between second gas pocket and the first gas pocket is greater than the length of through-hole.
Furthermore, a first groove is formed in the inner wall of the through hole of the first telescopic piece, and a first elastic piece and a positioning rod are arranged in the first groove; the outer wall of the second plugging rod is also provided with a positioning hole, and the first elastic piece can push the positioning rod to be inserted into the positioning hole; still be equipped with the carriage release lever in the blind hole of second shutoff pole, be equipped with the second recess on the outer wall of carriage release lever, be equipped with second elastic component and unblock pole in the second recess, the elasticity of second elastic component is greater than the elasticity of first elastic component, still be equipped with the passageway that internal diameter and unblock pole external diameter are unanimous in the second shutoff pole, passageway one end and locating hole intercommunication, the other end and blind hole intercommunication.
Furthermore, a third elastic piece is arranged on the inner bottom of the blind hole of the second plugging rod and is connected with the movable rod; the second plugging rod is also provided with a fourth elastic piece, the fourth elastic piece is sleeved on the second plugging rod, one end of the fourth elastic piece is connected with the outer wall of the second plugging rod, and the other end of the fourth elastic piece is connected with the inner wall, close to the connector, of the first telescopic piece; (ii) a Still be equipped with the first connecting hole of U type on the lateral wall of carriage release lever, the both ends of first connecting hole can be with first gas pocket and second gas pocket intercommunication.
Furthermore, the side wall of the connector is also provided with an exhaust hole which can be communicated with the second air hole; the connector is equipped with the holding tank with first extensible member through-hole intercommunication, second shutoff pole can insert to the holding tank in.
Furthermore, an air passage which is used for communicating two ends of the first plugging rod is arranged in the first plugging rod, and the air passage is communicated with the second telescopic piece; a support rod is further arranged in the air passage of the first plugging rod, a driving mechanism is arranged on the support rod, and a movable block with the outer diameter matched with the inner diameter of the air passage is arranged on an output shaft of the driving mechanism; still be equipped with third gas pocket and fourth gas pocket on the outer wall of first shutoff pole, still be equipped with the second connecting hole of U type on the movable block lateral wall, the second connecting hole can be with third gas pocket and fourth gas pocket intercommunication.
Furthermore, a funnel-shaped air guide cover is further arranged on the first blocking rod, and the air guide cover is sleeved on the outer side, located on the first telescopic piece, of the first blocking rod and is connected with the tail portion of the first telescopic piece.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. according to the invention, the natural gas in the pipeline can be monitored in real time by using the gas leakage alarm assembly and the pressure sensor, and when the natural gas in the pipeline leaks, the intelligent valve can be controlled to close the pipeline in time by using the management platform, so that more natural gas is prevented from leaking;
2. the temperature sensor can be driven to move in the pipeline by the aid of the arranged first telescopic piece, so that the temperature sensor can monitor the temperature of natural gas in different areas in the pipeline in real time, and compared with a traditional mode that the temperature sensor is fixedly installed, the monitoring area of the temperature sensor is enlarged;
3. the first telescopic piece can also drive the gas leakage alarm assembly and the pressure sensor to move in the pipeline, so that a certain area in the pipeline is dynamically monitored, and the monitoring range is expanded.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic view of a temperature sensor of the present invention positioned within a pipeline;
FIG. 2 is a schematic view of the interior of the first telescoping member of the present invention;
FIG. 3 is a schematic view of the first telescoping member in another state of the invention;
FIG. 4 is a schematic view of the internal structure of the first occlusion rod of the present invention;
FIG. 5 is an enlarged view of portion A of FIG. 2;
FIG. 6 is an enlarged view of portion B of FIG. 3;
fig. 7 is a schematic structural view of the movable cylinder of the present invention.
Reference numbers and corresponding part names in the drawings:
1-pipeline, 2-temperature sensor, 3-first expansion piece, 4-fixed rod, 5-movable piece, 6-connector, 7-sleeve, 8-second expansion piece, 9-fifth elastic piece, 10-first blocking rod, 11-holding tank, 12-fourth elastic piece, 13-second blocking rod, 14-movable block, 15-second connecting hole, 16-output shaft, 17-fourth air hole, 18-unlocking rod, 19-first elastic piece, 20-positioning rod, 21-third elastic piece, 22-second elastic piece, 23-movable rod, 24-air vent hole, 25-first connecting hole, 26-first air hole, 27-second air hole, 28-gas leakage alarm component, 29-air guide cover, 30-inner supporting rod, 31-pressure sensor, 32-sealing ring, 33-movable plate, 34-movable cylinder, 35-sixth elastic piece, 36-third air hole and 37-driving mechanism.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Examples
As shown in fig. 1 to 7, the gas leakage alarm system comprises an object platform, a sensing network platform and a management platform, wherein the object platform is connected with the management platform through the sensing network platform, the object platform comprises a gas leakage alarm assembly 28, a pressure sensor 31 and an intelligent valve, the gas leakage alarm assembly 28 is connected with the pressure sensor 31, the gas leakage alarm assembly 28 can drive the pressure sensor 31 to move axially along a pipeline 1, the pressure sensor 31 is used for monitoring the pressure of natural gas in the pipeline 1 and sending the pressure to the management platform through the sensing network platform, and when the pressure sensor 31 monitors that the pressure of the natural gas is reduced, the management platform sends a signal to the intelligent valve through the sensing network platform and closes the pipeline 1 through the intelligent valve.
Aiming at the problem that the metering system in the prior art can not monitor the natural gas in the pipeline in real time, the pipeline is usually monitored by adopting a mode of patrolling by maintenance personnel, and the pipeline needs to be manually closed once leakage occurs, the technical scheme utilizes an object platform to arrange a gas leakage alarm assembly 28, a pressure sensor 31 and an intelligent valve in the pipeline, wherein the leakage alarm assembly 28 is connected with the pressure sensor 31, the leakage alarm assembly 28 can drive the pressure sensor 31 to move in a certain area in the pipeline 1 to monitor the natural gas leakage state in the area, and a management platform uploads monitoring information in real time by utilizing a sensing network platform, the management platform monitors the natural gas state in the area in the pipeline, and once the pressure value of the natural gas monitored by the pressure sensor 31 is smaller than a preset value, then, the natural gas in the area of the pipeline 1 is judged to be abnormal, a valve closing instruction is issued to the intelligent valve through the sensing network platform, meanwhile, the gas management company sends abnormality and processing information to the gas company management system, and then sends maintenance personnel to the area of the pipeline 1 for checking to judge whether the pipeline 1 leaks.
The object platform further comprises a temperature sensor 2; still be equipped with dead lever 4 on the 1 inner wall of pipeline, be equipped with first extensible member 3 on the dead lever 4, first extensible member 3 can be followed pipeline 1's axial and stretched out and drawn back, and first extensible member 3 still is equipped with connector 6 along the orientation that the interior natural gas of pipeline 1 flows, temperature sensor 2 with including gas leakage alarm component 28 all be fixed in on the connector 6.
The temperature sensor 2 that sets up is used for monitoring the temperature of the interior natural gas of pipeline 1, in case when pipeline 1 takes place to leak, the natural gas temperature of this department also can take place certain stirring, consequently, can real-time activity pipeline 1 interior natural gas temperature monitor on the one hand through the temperature sensor 2 that sets up, on the other hand takes place when unusual through the natural gas temperature that stable sensor 2 gathered, also can in time take place information to the management platform through network sensing platform, also can in time inform maintainer by the management platform and patrol and examine.
The traditional installation method of the temperature sensor 2 is to install the temperature sensors 2 with different numbers in the pipeline 1 according to a certain distance to obtain the natural gas temperature at different positions in the pipeline 1 in real time, but because a certain distance exists between two adjacent temperature sensors 2, the traditional installation method of the temperature sensor 2 cannot effectively obtain the natural gas temperature information at different positions in the pipeline 1, therefore, the object platform of the technical scheme is further provided with a first telescopic piece 3 for adjusting the position of the temperature sensor 2, the first telescopic piece 3 is fixed on the inner wall of the pipeline 1 through a fixing rod 4, one end of the first telescopic piece 3 is ensured to be fixed, the other end can move along the flowing direction of the natural gas in the pipeline 1, so that the position of the temperature sensor 2 in the pipeline 1 is changed, and the natural gas temperature at different positions in the pipeline 1 can be measured, and judging whether the temperature of the natural gas is changed under the influence of the outside.
Meanwhile, when the first telescopic piece 3 is used for driving the temperature sensor 2 to move in the pipeline, the gas leakage alarm assembly 28 can be driven to move in the pipeline 1 together, and in the moving process of the gas leakage alarm assembly 28, the gas leakage alarm assembly 28 and the pressure sensor 31 can detect the inner wall of the pipeline 1 together to judge whether natural gas leaks from the inner wall of the pipeline 1.
The gas leakage alarm assembly 28 comprises an inner support rod 30, a movable cylinder 34 with the outer diameter same as the inner diameter of the pipeline 1 and an air pump; the movable cylinder 34 is sleeved on the connector 6 and is connected with the connector 6 through the inner support rod 30; an annular groove is formed in the circumferential outer wall of the movable cylinder 34, the annular groove and the inner wall of the pipeline 1 form a sealing state, the output end of the air pump is inserted into the annular groove, and the pressure sensor 31 is located in the annular groove; the movable cylinder 34 is also provided with a movable plate 33 with the outer diameter being the same as the inner diameter of the pipeline 1, the movable plate 33 is sleeved on the annular groove, and the movable plate 33 can move along the axial direction of the movable cylinder 34; a sixth elastic member 35 is further disposed at an end of the annular groove of the movable cylinder 34, and the sixth elastic member 35 is connected to the movable plate 33.
In an initial state, gas is introduced into the annular groove by using the arranged gas pump, the sealed space formed between the annular groove and the inner wall of the pipeline 1 is forced to be filled with the gas, the gas enters the annular groove and then presses the movable plate 33 sleeved on the annular groove, the movable plate 33 is forced to compress the sixth elastic member 35, finally, the pressure in the sealed space formed between the annular groove and the inner wall of the pipeline 1 is in a constant value, when the connector 6 is driven by using the first telescopic member 3 to move in the pipeline 1, the movable cylinder 34 is driven by using the arranged inner support rod 30 to move on the inner wall of the pipeline 1, if no leakage occurs in the inner wall of the pipeline 1, the gas in the sealed space is always kept at a certain pressure value in the moving process of the movable cylinder 34, once the annular groove on the movable cylinder 34 moves to the leakage position, the sealed space formed between the annular groove of the movable cylinder 34 and the pipeline 1 is opened, make the gas of storage in this space reveal from the leak opening of pipeline 1, and then lead to the pressure value that pressure sensor 31 measured to reduce, consequently, the management platform can judge that pipeline 1 should appear unusually to in time inform maintainer to inspect.
In order to ensure that a better sealing space can be formed between the annular groove on the movable cylinder 34 and the inner wall of the pipeline 1, a sealing ring 32 is further sleeved on the movable cylinder 34 to ensure the air tightness between the movable cylinder 34 and the pipeline 1.
A moving part 5 and a fifth elastic part 9 are further arranged inside the first telescopic part 3, the moving part 5 penetrates through two ends of the first telescopic part 3 along the axial direction of the telescopic part 3, and the moving part 5 can open or close two ends of the first telescopic part 3; and two ends of the fifth elastic part 9 are respectively connected with two ends of the interior of the first telescopic part 3.
According to the technical scheme, the first telescopic piece 3 is a metal corrugated pipe, and can be axially stretched after being inflated, so that when the position of the temperature sensor 2 on the first telescopic piece 3 in the pipeline 1 needs to be changed, the tail end of the first telescopic piece 3 is opened through the arranged moving piece 5, natural gas in the pipeline 1 can enter the first telescopic piece 3 through the tail end of the first telescopic piece 3, the first telescopic piece 3 is inflated, the first telescopic piece 3 is forced to be stretched along the direction of the flow direction of the natural gas in the pipeline 1, the position of the temperature sensor 2 in the pipeline 1 is changed, and the temperature of the natural gas at different positions in the pipeline 1 is measured; and when the gas that lets in to first extensible member 3 was discharged when needs, the gas that recycles setting 5 in with first extensible member 3 was discharged, forces first extensible member 3 to contract backward, and then makes temperature sensor 2 round trip movement in the within range of predetermineeing, monitors the natural gas in this region in the pipeline 1.
Because the first extensible member 3 that sets up among this technical scheme is the bellows, consequently, utilize the interior vaulting pole 30 that sets up on connector 6 on the one hand can drive the removal of a movable cylinder 34, on the other hand has guaranteed the stability of first extensible member 3 at the in-process that removes, avoids the swing of first extensible member 3, has improved the stability of removal in-process.
The moving part 5 includes second extensible member 8, first shutoff pole 10 and second shutoff pole 13, and first shutoff pole 10 and second shutoff pole 13 are located the both ends of second extensible member 8 respectively, first extensible member 3 is equipped with the through-hole with 6 links of connector, second shutoff pole 13 is located the through-hole, first shutoff pole 10 is connected with the other end of first extensible member 3, and the axial displacement of first extensible member 3 can be followed to second shutoff pole 13.
The second expansion piece 8 is also a metal corrugated pipe, when the first expansion piece 3 is stretched or contracted, the second expansion piece 8 can expand and contract together, and the first plugging rod 10 and the second plugging rod 13 on the two ends of the second expansion piece 8 are ensured to keep synchronous motion; the arranged first blocking rod 10 is movably connected with the tail part of the first telescopic part 3, and the first blocking rod 10 can open or close the tail part of the first telescopic part 3, namely, whether natural gas in the pipeline 1 enters the first telescopic part 3 is controlled; and the second shutoff pole 13 that sets up can be to the opening or closing of first extensible member 3 head, and whether the natural gas that control promptly lets in to first extensible member 3 is discharged from first extensible member 3 in.
The tip of second extensible member 8 orientation second shutoff pole 13 direction is equipped with sleeve 7, sleeve 7 and 8 fixed connection of second extensible member, and sleeve 7 cover is on second shutoff pole 13, second shutoff pole 13 is equipped with and communicates the blind hole with second extensible member 8 inside towards the tip of 8 orientations of second extensible member, still be equipped with first gas pocket 26 and the second gas pocket 27 with the blind hole intercommunication on the outer wall of second shutoff pole 13, interval between second gas pocket 27 and the first gas pocket 26 is greater than the length of through-hole.
The sleeve 7 that sets up is used for being connected with second shutoff pole 13, when the head that needs to utilize second shutoff pole 13 to open first extensible member 3, move second shutoff pole 13 towards connector 6 direction, force second gas pocket 27 on the second shutoff pole 13 to be located the outside of first extensible member 3, and first gas pocket 26 is then located first extensible member 3, at this moment, under the effect of first gas pocket 26 and second gas pocket 27, with the inside and the inside intercommunication of pipeline 1 of first extensible member 3, consequently, the gas that is located first extensible member 3 can flow into in pipeline 1 through looping through first gas pocket 26, second gas pocket 27.
A first groove is further formed in the inner wall of the through hole of the first telescopic piece 3, and a first elastic piece 19 and a positioning rod 20 are arranged in the first groove; a positioning hole is further formed in the outer wall of the second plugging rod 13, and the first elastic piece 19 can push the positioning rod 20 to be inserted into the positioning hole; still be equipped with the carriage release lever 23 in the blind hole of second shutoff pole 13, be equipped with the second recess on the outer wall of carriage release lever 23, be equipped with second elastic component 22 and unblock pole 18 in the second recess, the elasticity of second elastic component 22 is greater than the elasticity of first elastic component 19, still be equipped with the passageway that internal diameter and unblock pole 18 external diameter are unanimous in the second shutoff pole 13, passageway one end and locating hole intercommunication, the other end and blind hole intercommunication.
In order to ensure that the second blocking rod 13 positioned on the head of the first telescopic part 3 can move along with the first telescopic part 3 in the stretching process, so that the second blocking rod 13 is prevented from falling off from the first telescopic part 3, for this reason, the technical scheme is provided with a first elastic part 19 and a positioning rod 20, the positioning rod 20 is inserted into a positioning hole of the second blocking rod 13 by utilizing the elastic force generated by the first elastic part 19, the second air hole 27 is positioned in the first telescopic part 3, and the head of the first telescopic part 3 is in a blocking state at this moment; when the gas in the first telescopic member 3 needs to be discharged, the moving rod 23 in the blind hole is moved towards the inner bottom of the blind hole, when the unlocking rod 18 on the moving rod 23 moves to the passage of the second blocking rod 13, the unlocking rod 18 is pushed to be inserted into the passage under the action of the second elastic member 22, the positioning rod 20 in the positioning hole is pushed back into the first groove, the maximum displacement of the unlocking rod 18 is that the end part of the unlocking rod is flush with the outer wall of the second blocking rod 13, at this time, the constraint of the positioning rod 20 on the second blocking rod 13 is removed, and therefore the second blocking rod 13 can freely move at the head part of the first telescopic member 3.
A third elastic piece 21 is further arranged at the inner bottom of the blind hole of the second plugging rod 13, and the third elastic piece 21 is connected with a movable rod 23; the second blocking rod 13 is further provided with a fourth elastic part 12, the fourth elastic part 12 is sleeved on the second blocking rod 13, one end of the fourth elastic part 12 is connected with the outer wall of the second blocking rod 13, and the other end of the fourth elastic part 12 is connected with the inner wall, close to the connector 6, of the first telescopic part 3; the side wall of the moving rod 23 is further provided with a U-shaped first connection hole 25, and both ends of the first connection hole 25 can communicate the first air hole 26 with the second air hole 27.
The third elastic member 21 is arranged to connect the moving rod 23, and when the moving rod 23 moves towards the inner bottom of the blind hole to unlock the positioning rod 20, the moving rod 23 can compress the third elastic member 21, so that after the gas in the first telescopic member 3 is exhausted, the moving rod 23 can be pushed to move to the initial position again under the action of the third elastic member 21.
The fourth elastic component 12 that sets up is used for retraining second shutoff pole 13, and when second shutoff pole 13 stretched out outwards in first extensible member 3, fourth elastic component 12 was in compression state, consequently, when accomplishing the gas emission back in the first extensible member 3, under the effect of fourth elastic component 12, can promote second shutoff pole 13 and retract in first extensible member 3.
Since the positioning rod 20 is unlocked by moving the moving rod 23 in the blind hole, the moving rod 23 is provided with a first connecting hole 25 to ensure that the first air hole 26 and the second air hole 27 can be communicated when the second blocking rod 13 extends out of the first extensible member 3 after the positioning rod 20 is unlocked.
The side wall of the connector 6 is also provided with an exhaust hole 24 which can be communicated with the second air hole 27; the connector 6 is provided with an accommodating groove 11 communicated with the through hole of the first telescopic piece 3, and the second plugging rod 13 can be inserted into the accommodating groove 11.
The exhaust hole 24 that sets up is used for communicating with second gas pocket 27, and when second gas pocket 27 on second shutoff pole 13 moved to communicating with exhaust hole 24, the gas that is located first extensible member 3 loops through first gas pocket 26, second connecting hole 25, second gas pocket 27 in proper order, discharges to pipeline 1 through exhaust hole 24 in the end, still be provided with the check valve in the exhaust hole 24 for gas can discharge into pipeline 1 through exhaust hole 24 in to, and the gas in pipeline 1 can't enter into exhaust hole 24 through the check valve.
An air passage which is used for communicating two ends of the first plugging rod 10 is arranged in the first plugging rod 10, and the air passage is communicated with the second telescopic piece 8; a support rod 11 is further arranged in the air passage of the first blocking rod 10, a driving mechanism 37 is arranged on the support rod 11, and a movable block 14 with the outer diameter matched with the inner diameter of the air passage is arranged on an output shaft 16 of the driving mechanism 37; still be equipped with third gas pocket 36 and fourth gas pocket 17 on the outer wall of first shutoff pole 10, third gas pocket 36 is located first extensible member 3, fourth gas pocket 17 is located outside first extensible member 3, still be equipped with the second connecting hole 15 of U type on the movable block 14 lateral wall, second connecting hole 15 can be with third gas pocket 36 and fourth gas pocket 17 intercommunication.
In an initial state, the second connection hole 15 on the movable block 14 is dislocated with the fourth air hole 17 and the third air hole 36, that is, the second connection hole 15 is not communicated with the third air hole 36 and the fourth air hole 17, when the first extensible member 3 needs to be inflated, the management platform sends an instruction to the driving mechanism 37 through the sensing network platform, the driving mechanism 37 is a hydraulic cylinder, the driving mechanism 37 drives the movable block 14 to move in the air passage of the first blocking rod 10 by using the output shaft 16, the second connection hole 15 is communicated with the third air hole 36 and the fourth air hole 17, at this time, because the natural gas in the pipeline 1 is in a high pressure state, the pressure of the natural gas is greater than the pressure in the first extensible member 3, the high-pressure natural gas in the pipeline 1 enters the first extensible member 3 through the fourth air hole 17 and the second connection hole 15 and finally through the third air hole 36 to inflate the first extensible member 3, the end part of the first telescopic member 3 provided with the temperature sensor 2 is forced to stretch in the pipeline 1, the position of the first telescopic member 3 is changed, after the first telescopic member 3 is in the maximum stretching amount, the driving mechanism 37 is used for driving the movable block 14 to disconnect the second connecting hole 15 from the third air hole 36 and the fourth air hole 17, and the third air hole 36 is in the state of being communicated with the air passage of the first blocking rod 10 at the moment, therefore, the air in the first telescopic member 3 enters the first blocking rod 10 through the third air hole 36 and then enters the blind hole of the second blocking rod 13 through the second telescopic member 8, the thrust is applied to the moving rod 23 in the blind hole, so that the moving rod 23 moves towards the inner bottom direction of the blind hole, the moving rod 23 realizes the unlocking of the positioning rod 20 in the moving process, and the first connecting hole 25 is used for communicating the first air hole 26 with the second air hole 27, and second shutoff pole 13 moves at the head of first extensible member 3 under the effect of carriage release lever 23, finally realizes second gas pocket 27 and exhaust hole 24 intercommunication, finally makes the gas that lets in to first extensible member 3 discharge, has realized the back of contracting to first extensible member 3, moves back temperature sensor to initial position, and like this, the temperature sensor who sets up can carry out reciprocating motion in pipeline 1 within the scope of predetermineeing, monitors the natural gas temperature in this region.
In order to ensure that the first extensible member 3 can be extended normally, the management platform can issue an adjustment instruction of the natural gas pressure in the pipeline 1 to the object platform through the sensing network platform, namely when the first extensible member 3 needs to be expanded and stretched, the natural gas pressure in the pipeline 1 is adjusted to enable the pressure of the natural gas to be greater than the elasticity of the fifth elastic member 9, so that the pressure in the pipeline 1 can easily enter the first extensible member 3, and the first extensible member 3 is forced to be in a stretched state; and when the gas that will let in to first extensible member 3 is discharged, reduce the natural gas pressure in the pipeline 1, make the inside atmospheric pressure of first extensible member 3 be greater than the inside gas of pipeline 1, like this, when third gas pocket 36 on first shutoff pole 10 communicates with second extensible member 8, under the effect of fifth elastic component 9 pulling force, the first extensible member 3 of pulling contracts, force the gas that is located first extensible member 3 to enter into second extensible member 8 through third gas pocket 36, finally promote the normal removal of carriage release lever 23 and second shutoff pole 13, realized will letting in the purpose to the effective discharge of the gas in the first extensible member 3.
The first blocking rod 10 is further provided with a funnel-shaped air guiding cover 29, and the air guiding cover 29 is sleeved on the outer side of the first telescopic piece 3 of the first blocking rod 10 and is connected with the tail portion of the first telescopic piece 3.
This technical scheme is in order to guarantee that the natural gas that is located pipeline 1 can effectively enter into to the fourth gas hole of first shutoff pole 10, so the afterbody at first extensible member 3 is provided with wind scooper 29, wind scooper 29 adopts the funnel structure, and wind scooper 29 cover is established on first shutoff pole 10, make the natural gas in pipeline 1 at the in-process that flows, utilize the wind scooper 29 that sets up to lead-in to first shutoff pole 10 in with the natural gas in pipeline 1, and then enter into to first extensible member 3, the in-process of aerifing to first extensible member 3 has been realized.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. The natural gas pipe network leakage remote alarm system based on the Internet of things comprises an object platform, a sensing network platform and a management platform, wherein the object platform is connected with the management platform through the sensing network platform, characterized in that the object platform comprises a gas leakage alarm component (28), a pressure sensor (31) and an intelligent valve, the gas leakage alarm assembly (28) is connected with the pressure sensor (31), the gas leakage alarm assembly (28) can drive the pressure sensor (31) to move axially along the pipeline (1), the pressure sensor (31) is used for monitoring the pressure of natural gas in the pipeline (1) and sending the pressure to the management platform through the sensing network platform, when the pressure sensor (31) monitors that the pressure of the natural gas is reduced, the management platform sends a signal to the intelligent valve through the sensing network platform, and the pipeline (1) is closed through the intelligent valve.
2. The internet of things-based remote alarm system for natural gas pipe network leakage according to claim 1, wherein the object platform further comprises a temperature sensor (2);
still be equipped with dead lever (4) on pipeline (1) inner wall, be equipped with first extensible member (3) on dead lever (4), the axial that pipeline (1) can be followed in first extensible member (3) is flexible, and first extensible member (3) serve along the direction that pipeline (1) interior natural gas flows and still be equipped with connector (6), temperature sensor (2) with including gas leakage warning subassembly (28) all are fixed in on connector (6).
3. The internet of things-based remote alarm system for natural gas pipe network leakage of claim 2, characterized in that the gas leakage alarm assembly (28) comprises an inner support rod (30), a movable cylinder (34) with the outer diameter being the same as the inner diameter of the pipeline (1) and an air pump;
the movable cylinder (34) is sleeved on the connector (6) and is connected with the connector (6) through the inner supporting rod (30);
an annular groove is formed in the circumferential outer wall of the movable cylinder (34), the annular groove and the inner wall of the pipeline (1) form a sealing state, the output end of the air pump is inserted into the annular groove, and the pressure sensor (31) is located in the annular groove;
the movable cylinder (34) is also provided with a movable plate (33) with the outer diameter being the same as the inner diameter of the pipeline (1), the movable plate (33) is sleeved on the annular groove, and the movable plate (33) can move along the axial direction of the movable cylinder (34);
and a sixth elastic piece (35) is further arranged at the end part of the annular groove of the movable cylinder (34), and the sixth elastic piece (35) is connected with the movable plate (33).
4. The natural gas pipe network leakage remote alarm system based on the internet of things as claimed in claim 2, wherein a moving member (5) and a fifth elastic member (9) are further arranged inside the first telescopic member (3), the moving member (5) penetrates through two ends of the first telescopic member (3) along the axial direction of the first telescopic member (3), and the moving member (5) can open or close two ends of the first telescopic member (3);
two ends of the fifth elastic piece (9) are respectively connected with two ends of the interior of the first telescopic piece (3);
moving part (5) include second extensible member (8), first shutoff pole (10) and second shutoff pole (13), and first shutoff pole (10) and second shutoff pole (13) are located the both ends of second extensible member (8) respectively, first extensible member (3) are equipped with the through-hole with connector (6) link, second shutoff pole (13) are located the through-hole, first shutoff pole (10) are connected with the other end of first extensible member (3), and the axial displacement of first extensible member (3) can be followed in second shutoff pole (13).
5. The remote natural gas pipe network leakage alarm system based on the Internet of things as claimed in claim 4, wherein a sleeve (7) is arranged at the end of the second telescopic piece (8) facing the second plugging rod (13), the sleeve (7) is fixedly connected with the second telescopic piece (8), the sleeve (7) is sleeved on the second plugging rod (13), a blind hole communicated with the inside of the second telescopic piece (8) is formed in the end of the second plugging rod (13) facing the second telescopic piece (8), a first air hole (26) and a second air hole (27) communicated with the blind hole are further formed in the outer wall of the second plugging rod (13), and the distance between the second air hole (27) and the first air hole (26) is larger than the length of the through hole.
6. The natural gas pipe network leakage remote alarm system based on the Internet of things of claim 5, wherein a first groove is further formed in the inner wall of the through hole of the first telescopic piece (3), and a first elastic piece (19) and a positioning rod (20) are arranged in the first groove;
the outer wall of the second plugging rod (13) is also provided with a positioning hole, and the first elastic piece (19) can push the positioning rod (20) to be inserted into the positioning hole;
still be equipped with carriage release lever (23) in the blind hole of second shutoff pole (13), be equipped with the second recess on the outer wall of carriage release lever (23), be equipped with second elastic component (22) and unblock pole (18) in the second recess, the elasticity of second elastic component (22) is greater than the elasticity of first elastic component (19), still be equipped with the passageway that internal diameter and unblock pole (18) external diameter are unanimous in second shutoff pole (13), passageway one end and locating hole intercommunication, the other end and blind hole intercommunication.
7. The remote alarm system for natural gas pipe network leakage based on the internet of things of claim 6, characterized in that a third elastic member (21) is further arranged on the inner bottom of the blind hole of the second blocking rod (13), and the third elastic member (21) is connected with the moving rod (23);
a fourth elastic piece (12) is further arranged on the second blocking rod (13), the fourth elastic piece (12) is sleeved on the second blocking rod (13), one end of the fourth elastic piece (12) is connected with the outer wall of the second blocking rod (13), and the other end of the fourth elastic piece is connected with the inner wall, close to the connector (6), of the first telescopic piece (3);
the side wall of the moving rod (23) is also provided with a U-shaped first connecting hole (25), and the two ends of the first connecting hole (25) can communicate the first air hole (26) with the second air hole (27).
8. The natural gas pipe network leakage remote alarm system based on the Internet of things of claim 4, wherein an air passage for communicating two ends of the first blocking rod (10) is arranged inside the first blocking rod (10), and the air passage is communicated with the second telescopic piece (8);
a support rod (11) is further arranged in the air passage of the first blocking rod (10), a driving mechanism (37) is arranged on the support rod (11), and a movable block (14) with the outer diameter matched with the inner diameter of the air passage is arranged on an output shaft (16) of the driving mechanism (37);
still be equipped with third gas pocket (36) and fourth gas pocket (17) on the outer wall of first shutoff pole (10), third gas pocket (36) are located first extensible member (3), fourth gas pocket (17) are located outside first extensible member (3), still be equipped with second connecting hole (15) of U type on movable block (14) lateral wall, second connecting hole (15) can be with third gas pocket (36) and fourth gas pocket (17) intercommunication.
9. The natural gas pipe network leakage remote alarm system based on the internet of things as claimed in claim 4, wherein a funnel-shaped wind scooper (29) is further arranged on the first blocking rod (10), and the wind scooper (29) is sleeved on the outer side, located on the first telescopic part (3), of the first blocking rod (10) and is connected with the tail portion of the first telescopic part (3).
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