CN115164111A - River-crossing gas pipeline online monitoring system based on distributed optical fibers - Google Patents
River-crossing gas pipeline online monitoring system based on distributed optical fibers Download PDFInfo
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- CN115164111A CN115164111A CN202210675921.2A CN202210675921A CN115164111A CN 115164111 A CN115164111 A CN 115164111A CN 202210675921 A CN202210675921 A CN 202210675921A CN 115164111 A CN115164111 A CN 115164111A
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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
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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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
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- General Engineering & Computer Science (AREA)
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- Aviation & Aerospace Engineering (AREA)
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- Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
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Abstract
The invention discloses a river-crossing gas pipeline online monitoring system based on distributed optical fibers, which comprises a gas transmission pipeline, wherein a transmission channel which penetrates through the gas transmission pipeline from left to right and is used for transmitting gas is arranged in the gas transmission pipeline, a monitoring section is fixedly arranged in the middle of the gas transmission pipeline, a monitoring section transmission channel penetrates through the monitoring section from left to right, the gas inlet end of the monitoring section transmission channel is connected with the gas outlet end of the transmission channel, the gas outlet end of the monitoring section transmission channel is connected with the gas inlet end of the transmission channel, a monitoring main body is fixedly connected between the inner walls of the monitoring section transmission channel through a support, and an even number of swinging bodies are arranged on the circumferential side arc end surface of the monitoring main body in an annular array mode.
Description
Technical Field
The invention relates to the technical field of monitoring of a river-crossing gas pipeline, in particular to a distributed optical fiber-based online monitoring system for the river-crossing gas pipeline.
Background
The natural gas pipeline refers to a pipeline for conveying natural gas (including associated gas produced in oil fields) from a mining place or a processing plant to an urban gas distribution center or an industrial enterprise user, and is also called a gas conveying pipeline. In the total length of pipelines in the world, natural gas pipelines account for about half, and gas pipelines are assembled by connecting single pipes one by one. Modern gas collection pipelines and gas transmission pipelines are formed by connecting steel pipes through electric welding. The steel pipe has various types, such as a seamless pipe, a spiral seam pipe and a straight seam pipe, the seamless pipe is suitable for a pipeline with the pipe diameter of less than 529 mm, and the spiral seam pipe and the straight seam pipe are suitable for a large-diameter pipeline. The pipe cross section structure of the gathering and transportation pipeline is complexly an inner coating, a steel pipe, an outer insulating layer and a heat preservation (cold insulation) layer; the simple structure is only a steel pipe and an outer insulating layer, and an inner wall coating and a heat preservation (cold insulation) layer are determined according to the gas transmission process;
in the case of underwater gas pipeline transportation, particularly in the case of a cross-river gas transmission pipeline in the Fuzhou Minjiang river section, regular pipeline transmission detection is inconvenient to perform due to the fact that the pipeline is immersed underwater for a long time, external personnel can detect the pipeline only when large-scale leakage or instability occurs due to the fact that unstable factors occur in transmission in the pipeline in time, the external personnel can detect the external part of the pipeline through an underwater robot at present, but the pipeline is high in cost, the working efficiency of detecting the pipeline only at the outer side is low, and cost is low.
Disclosure of Invention
In order to solve the problems, the embodiment designs a river-crossing gas pipeline online monitoring system based on distributed optical fibers, wherein the gas pipeline detection system comprises a gas transmission pipeline, and a transmission channel which penetrates through the gas transmission pipeline from left to right and is used for transmitting gas is arranged in the gas transmission pipeline;
the gas transmission pipeline is characterized in that a monitoring section is fixedly arranged in the middle of the gas transmission pipeline, a monitoring section transmission channel penetrates through the monitoring section from left to right, the gas inlet end of the monitoring section transmission channel is connected with the gas outlet end of the transmission channel, the gas outlet end of the monitoring section transmission channel is connected with the gas inlet end of the transmission channel, a monitoring main body is fixedly connected between the inner walls of the monitoring section transmission channel through a support, an even number of swinging bodies are arranged on the circumferential side arc end surface of the monitoring main body in an annular array mode, and a windward sheet is fixedly arranged on the right side surface of each swinging body;
a strain chamber is arranged in the monitoring main body, notches are formed in the arc-shaped inner walls of the periphery of the strain chamber in a communicated manner, a rotating shaft extending into the notches is fixedly arranged at one end of the swinging body, a strain body is arranged in the strain chamber in a sliding manner, a vibration wave monitoring assembly for detecting the vibration condition of gas circulating in the transmission channel is arranged in the strain body, and one end of the rotating shaft extending into the strain chamber is connected with the vibration wave monitoring assembly;
a temperature monitor with the right end extending out of the end face at the right side of the monitoring main body is fixedly arranged on the end face at the right side of the monitoring main body, and the temperature monitor detects the temperature of the fuel gas flowing through the right side of the monitoring main body;
the vibration wave monitoring assembly and the temperature monitoring meter are communicated with an external monitoring platform through an optical fiber sensing technology and transmit vibration signals and temperature signals detected by the vibration wave monitoring assembly and the temperature monitoring meter to the monitoring platform;
monitoring main part right side just is located be provided with the radome fairing in monitoring section transmission path's all sides arc inner wall, folding the gasbag of blocking of placing compression state in the radome fairing, fixed be provided with on the outside arcwall face of monitoring section with block the closer that the gasbag is linked together, the closer is in block the gasbag right side gas transmission pipeline section adsorbs external moisture and fills when breaking in blocking the gasbag right it cuts off to monitor section transmission path.
It may be preferred that: the monitoring main part is streamlined design from left to right, the pendulum body reaches the windward piece is provided with four groups and ring array in the monitoring main part outside, the left surface of pendulum body is streamlined design from left to right, through the streamlined design of monitoring main part can reduce the energy consumption when the gas is transmitted.
It may be preferred that: the transmission channel at the left end of the gas transmission pipeline is provided with a sleeve hole, the right end of the gas transmission pipeline is provided with a sleeve section, the sleeve section and the sleeve hole can be mutually clamped, and the sleeve hole and the sleeve section can be mutually connected to prolong the pipeline transmission distance and reduce the installation difficulty.
It may be preferred that: the annular arrays are uniformly and fixedly arranged on the arc-shaped inner walls on the peripheral sides of the transmission channels, the flat flow plates are uniformly and fixedly arranged on the arc-shaped inner walls on the peripheral sides of the right end of the monitoring section transmission channel, the right end of each flat flow plate is connected with the corresponding turbulent flow plate, and the turbulent flow plates and the flat flow plates are used for reducing turbulent flow fluctuation in gas transportation.
It may be preferred that: the vibration wave monitoring assembly comprises a rotating groove which is arranged in the strain body in a penetrating mode, a rotating column is rotatably arranged in the rotating groove, one end of the rotating shaft on one side is fixedly connected to the rotating column, a turbulence strain gauge a and a turbulence strain gauge b are arranged between the rotating column and the inner wall of the rotating groove, the turbulence strain gauge a is fixedly arranged on the inner wall of the rotating groove, the turbulence strain gauge b is fixedly arranged on the rotating column, and vibration turbulence strain of the windward piece on one side can be detected through the turbulence strain gauge a and the turbulence strain gauge b;
a rotating hole with an outward opening is formed in the rotating column, a sleeve column which extends into the rotating hole and is rotatably connected with the inner wall of the rotating hole is fixedly arranged at one end of the rotating shaft, which is fixedly connected with one end of the rotating column, corresponding to the rotating shaft, a through notch is formed in one side surface of the rotating hole, a carrying block which can slide in the notch is fixedly arranged on one side surface of the sleeve column, a turbulent flow strain gauge c and a turbulent flow strain gauge d are arranged between the carrying block and the inner wall of the rotating groove, the turbulent flow strain gauge c is fixedly arranged on the inner wall of the rotating groove, the turbulent flow strain gauge d is fixedly arranged on the carrying block, and the vibration turbulent flow strain on the other side can be detected through the carrying block and the turbulent flow strain gauge c;
the rotating columns among the swinging bodies corresponding to even number groups are designed in a left-right staggered mode;
the intercommunication is provided with the spout in the inner wall of emergency chamber left side, the fixed one end that is provided with on the left side terminal surface of foil gage extends into in the spout and can be in gliding velocity of flow strain carrier of spout, velocity of flow strain carrier with be provided with velocity of flow foil gage an and velocity of flow foil gage b between the spout inner wall, velocity of flow foil gage a fixed set up in on the velocity of flow strain carrier, velocity of flow foil gage b fixed set up in on the spout inner wall, the rotatable base member that is connected with of foil gage right-hand member, the base member right-hand member with fixedly connected with pushes away the spring between the inner wall of foil gage right side, through velocity of flow foil gage a with velocity of flow foil gage b between the strain detectable when the oscillating body receives the gas transportation mutual acting force that produces measures and calculates with this and calculates the meeting an emergency between the gas transmission rate.
It may be preferred that: the rotary sleeve is characterized in that rotary grooves are formed in the arc-shaped inner walls of the peripheral sides of the rotary holes in a communicated manner, rotary sliding blocks capable of sliding in the rotary grooves are fixedly arranged on the sleeve columns, rotary springs are fixedly arranged between the rotary sliding blocks and the inner walls of the rotary grooves and used for driving the sleeve columns to reset, and the rotary sliding blocks and the rotary grooves are used for limiting the relative positions of the sleeve columns and the rotary columns.
It may be preferred that: strain the body with sliding connection and zonulae occludens each other between the indoor wall of meeting an emergency, the axis of rotation with rotate the hole rotate the post with rotate between the hole and rotate and connect and zonulae occludens each other to this prevention foil gage and gas direct contact.
Has the beneficial effects that: when the gas pipeline monitoring device is used, turbulence and transmission flow velocity generated by gas transmission inside a pipeline can be monitored through the vibration wave monitoring assembly, and real-time transmission is carried out through optical fibers, so that workers can monitor the gas transmission condition inside the pipeline conveniently.
Drawings
For ease of illustration, the invention is described in detail by the following specific examples and figures.
FIG. 1 is a schematic overall structure diagram of a distributed optical fiber-based river-crossing gas pipeline online monitoring system of the present invention;
FIG. 2 is a schematic structural diagram of the shock wave monitoring assembly;
FIG. 3 is a schematic view of the structure of the rotary column and the sleeve column;
FIG. 4 is a schematic view of the structure of the rotary column and the sleeve column;
FIG. 5 is a schematic structural diagram of the oscillating body and the monitoring body;
FIG. 6 is a schematic view of the structure of the rotary column and the sleeve column;
fig. 7 is a schematic structural view of the oscillating body and the windward plate.
Detailed Description
The invention will now be described in detail with reference to fig. 1 to 7, for the sake of convenience of description, the following orientations are now defined: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.
The invention relates to a river-crossing gas pipeline on-line monitoring system based on distributed optical fibers, which is further explained by combining the attached drawings of the invention:
the river-crossing gas pipeline on-line monitoring system based on the distributed optical fiber is shown in the figures 1-7, and comprises a gas transmission pipeline 101, wherein a transmission channel 102 which penetrates through the gas transmission pipeline 101 from left to right and is used for transmitting gas is arranged in the gas transmission pipeline 101;
a monitoring section 112 is fixedly arranged in the middle of the gas transmission pipeline 101, a monitoring section transmission channel 113 is arranged in the monitoring section 112 in a left-right penetrating manner, an air inlet end of the monitoring section transmission channel 113 is connected with an air outlet end of the transmission channel 102, an air outlet end of the monitoring section transmission channel 113 is connected with an air inlet end of the transmission channel 102, a monitoring main body 118 is fixedly connected between inner walls of the monitoring section transmission channel 113 through a support 115, an even number of swinging bodies 119 are arranged on the circumferential side arc end surface of the monitoring main body 118 in an annular array manner, and a windward piece 117 is fixedly arranged on the right side surface of the swinging body 119;
a strain chamber 123 is arranged in the monitoring main body 118, notches 122 are arranged in the arc-shaped inner walls of the peripheral sides of the strain chamber 123 in a communicated manner, a rotating shaft 128 extending into the notches 122 is fixedly arranged at one end of the swinging body 119, a strain body 121 is arranged in the strain chamber 123 in a sliding manner, a vibration wave monitoring assembly for detecting vibration of gas flowing through the transmission channel 102 is arranged in the strain body 121, and one end of the rotating shaft 128 extending into the strain chamber 123 is connected with the vibration wave monitoring assembly;
a temperature monitor 116 with the right end extending out of the right end face of the monitoring body 118 is fixedly arranged on the right end face of the monitoring body 118, and the temperature monitor 116 detects the temperature of the gas flowing through the right side of the monitoring body 118;
the vibration wave monitoring assembly and the temperature monitoring meter 116 are communicated with an external monitoring platform through an optical fiber sensing technology, and vibration signals and temperature signals detected by the vibration wave monitoring assembly and the temperature monitoring meter 116 are transmitted to the monitoring platform;
monitoring main part 118 right side just is located be provided with radome fairing 109 in monitoring section transmission path 113's the week side arc inner wall, folding in the radome fairing 109 places compression state's the gasbag 111 that blocks, fixed be provided with on monitoring section 112's the outside arcwall face with block closer 108 that gasbag 111 is linked together, closer 108 is in block gasbag 111 right side adsorb external moisture and fill when breaking in the gas transmission pipeline 101 section it is right to block in the gasbag 111 monitoring section transmission path 113 cuts off.
Advantageously, as shown in fig. 1 and fig. 2 of the monitoring body 118, the monitoring body 118 is of a streamline design from left to right, the oscillating body 119 and the windward plate 117 are arranged in four groups and annularly arrayed on the outer side of the monitoring body 118, the left side surface of the oscillating body 119 is of a streamline design from left to right, and energy consumption during gas transmission can be reduced by the streamline design of the monitoring body 118.
Advantageously, as shown in fig. 1, a sleeve hole 114 is provided at the position of the transmission channel 102 at the left end of the gas transmission pipeline 101, a sleeve section 103 is provided at the right end of the gas transmission pipeline 101, the sleeve section 103 and the sleeve hole 114 can be clamped with each other, and the sleeve hole 114 and the sleeve section 103 can be connected with each other to extend the transmission distance of the pipeline and reduce the installation difficulty.
Beneficially, the turbulence plates 104 are uniformly and fixedly arranged in an annular array on the arc-shaped inner wall on the peripheral side of the transmission channel 102, the flat flow plates 106 are uniformly and fixedly arranged in an annular array on the arc-shaped inner wall on the peripheral side of the right end of the monitoring section transmission channel 113, the right end of the flat flow plate 106 is connected with the turbulence plate 104, and the turbulence plate 104 and the flat flow plate 106 are used for reducing turbulence movement in gas transportation.
Advantageously, the shock wave monitoring assembly shown in fig. 1 to 7 includes a rotating groove 137 penetrating through the strain body 121, a rotating post 133 is rotatably disposed in the rotating groove 137, one end of the rotating shaft 128 on one side is fixedly connected to the rotating post 133, a turbulence strain gauge a144 and a turbulence strain gauge b143 are disposed between the rotating post 133 and an inner wall of the rotating groove 137, the turbulence strain gauge a144 is fixedly disposed on the inner wall of the rotating groove 137, and the turbulence strain gauge b143 is fixedly disposed on the rotating post 133, so that the shock turbulence strain of the windward plate 117 on one side can be detected through the turbulence strain gauge a144 and the turbulence strain gauge b 143;
a rotating hole 134 with an outward opening is formed in the rotating column 133, a sleeve column 135 which extends into the rotating hole 134 and is rotatably connected with the inner wall of the rotating hole 134 is fixedly arranged at one end of the rotating shaft 128, which is fixedly connected with one end of the rotating column 133, on the side corresponding to the rotating shaft 128, a through notch 138 is formed in one side surface of the rotating hole 134, a carrier block 141 which can slide in the notch 138 is fixedly arranged on one side surface of the sleeve column 135, a turbulent flow strain sheet c139 and a turbulent flow strain sheet d142 are arranged between the carrier block 141 and the inner wall of the rotating groove 137, the turbulent flow strain sheet c139 is fixedly arranged on the inner wall of the rotating groove 137, the turbulent flow strain sheet d142 is fixedly arranged on the carrier block 141, and the vibration turbulent flow strain of the 177 on the other side can be detected through the carrier block 141 and the turbulent flow strain sheet c 139;
the rotating columns 133 between the swinging bodies 119 corresponding to even number groups are designed to be staggered left and right;
a chute 125 is arranged in the inner wall of the left side of the strain chamber 123 in a communicating manner, a flow velocity strain carrier 124 having one end extending into the chute 125 and capable of sliding in the chute 125 is fixedly arranged on the left end face of the strain body 121, a flow velocity strain gauge a127 and a flow velocity strain gauge b126 are arranged between the flow velocity strain carrier 124 and the inner wall of the chute 125, the flow velocity strain gauge a127 is fixedly arranged on the flow velocity strain carrier 124, the flow velocity strain gauge b126 is fixedly arranged on the inner wall of the chute 125, the right end of the strain body 121 is rotatably connected with a substrate 131, a pushing spring 129 is fixedly connected between the right end of the substrate 131 and the inner wall of the right side of the strain chamber 123, and the mutual acting force generated when the oscillating body 119 is subjected to gas transportation can be detected through the strain between the flow velocity strain gauge a127 and the flow velocity strain gauge b126, so as to measure and calculate the strain between the gas transportation speeds.
Beneficially, the circumferential side arc inner wall of the rotating hole 134 is provided with a rotating groove 152 in communication, the sleeve column 135 is fixedly provided with a rotating slider 151 capable of sliding in the rotating groove 152, a rotating spring 153 is fixedly arranged between the rotating slider 151 and the inner wall of the rotating groove 152, the rotating slider 151 is used for driving the sleeve column 135 to reset, and the rotating slider 151 and the rotating groove 152 are used for limiting the relative position of the sleeve column 135 and the rotating column 133.
Advantageously, the strain body 121 and the inner wall of the strain chamber 123 are slidably connected and tightly connected to each other, and the rotation shaft 128 and the rotation hole 134, and the rotation post 133 and the rotation hole 134 are rotatably connected and tightly connected to each other, so as to prevent the strain gauge from directly contacting with the fuel gas.
When the gas transmission pipeline is used, the transmission distance and the stage of carrying among the gas transmission pipelines 101 can be prolonged by mutually clamping and tightly connecting the sleeve section 103 part and the sleeve hole 114 part;
the gas is transmitted from left to right through the transmission channel 102 and the monitoring section transmission channel 113, and when passing through the monitoring body 118, the streamlined monitoring body 118 and the swinging body 119 reduce the transmission energy consumption of the gas to the maximum extent, and when passing through the windward sheet 117 and the swinging body 119, the gas pushes the swinging body 119 to move to the right side by the interaction force between the gas and the windward sheet 117 and the swinging body 119, and drives the strain body 121 and the flow velocity strain carrier 124 to move to the right side, so that strain is generated between the flow velocity strain gauge b126 and the flow velocity strain gauge a127, thereby monitoring the kinetic energy strain transmitted by the gas;
the turbulent flow generated in the gas transmission process drives the windward disc 117 to swing, so as to drive the rotating shaft 128 to rotate, and further, the turbulent flow condition of the gas flowing through the peripheral side of the monitoring body 118 is strain monitored by driving the strain between the turbulent flow strain gauge b143 and the strain between the turbulent flow strain gauge c139 and the turbulent flow strain gauge d 142;
when the monitoring section transmission channel 113 or the transmission channel 102 is broken and gas leaks, the closer 108 is opened and a large amount of river water is filled into the blocking air bag 111, so that the blocking air bag 111 is expanded to reduce the inner diameter of the monitoring section transmission channel 113, thereby slowing down the leakage rate and reducing the loss;
vibration turbulence, flow velocity and temperature change conditions of gas flowing through the monitoring main body can be visually monitored through monitoring of the strain gauges on the peripheral sides;
the temperature monitor 116 may monitor the temperature of the gas flowing through the monitoring body 118 and show the temperature through a curve.
The invention has the beneficial effects that: when the gas pipeline is used, turbulence and transmission flow velocity generated by gas transmission inside the pipeline can be monitored through the vibration wave monitoring assembly, and real-time transmission is carried out through the optical fiber, so that workers can conveniently monitor the gas transmission condition inside the pipeline, the gas transmission energy consumption can be reduced through the streamline design of the main component of the vibration wave monitoring assembly, the transmission influence on the original gas is reduced to the maximum extent, the turbulence can be reduced through the turbulence plate 104 and the advection plate 106, and the stability is kept.
In the above manner, a person skilled in the art can make various changes depending on the operation mode within the scope of the present invention.
Claims (7)
1. The river-crossing gas pipeline online monitoring system based on the distributed optical fibers comprises a gas transmission pipeline, wherein a transmission channel which penetrates through the gas transmission pipeline from left to right and is used for transmitting gas is arranged in the gas transmission pipeline;
the gas transmission pipeline is characterized in that a monitoring section is fixedly arranged in the middle of the gas transmission pipeline, a monitoring section transmission channel penetrates through the monitoring section from left to right, the gas inlet end of the monitoring section transmission channel is connected with the gas outlet end of the transmission channel, the gas outlet end of the monitoring section transmission channel is connected with the gas inlet end of the transmission channel, a monitoring main body is fixedly connected between the inner walls of the monitoring section transmission channel through a support, an even number of swinging bodies are arranged on the circumferential side arc end surface of the monitoring main body in an annular array mode, and a windward sheet is fixedly arranged on the right side surface of each swinging body;
a strain chamber is arranged in the monitoring main body, notches are formed in the arc-shaped inner walls of the periphery of the strain chamber in a communicated manner, a rotating shaft extending into the notches is fixedly arranged at one end of the swinging body, a strain body is arranged in the strain chamber in a sliding manner, a vibration wave monitoring assembly is arranged in the strain body, and one end of the rotating shaft extending into the strain chamber is connected with the vibration wave monitoring assembly;
a temperature monitor with the right end extending out of the end face of the right side of the monitoring body is fixedly arranged on the end face of the right side of the monitoring body, and the temperature monitor detects the temperature of the gas flowing through the right side of the monitoring body;
the vibration wave monitoring assembly and the temperature monitoring meter are communicated with an external monitoring platform through an optical fiber sensing technology and transmit vibration signals and temperature signals detected by the vibration wave monitoring assembly and the temperature monitoring meter to the monitoring platform;
monitoring main part right side just is located be provided with the radome fairing in monitoring section transmission path's all sides arc inner wall, folding the gasbag of blocking of placing compression state in the radome fairing, fixed be provided with on the outside arcwall face of monitoring section with block the closer that the gasbag is linked together.
2. The system of claim 1, wherein the system comprises: the monitoring main part is streamline design from left to right, the swinging body reaches the windward piece is provided with four groups and annular array in the monitoring main part outside, the left surface of swinging body is streamline design from left to right.
3. The system of claim, wherein the system comprises: the transmission channel at the left end of the gas transmission pipeline is provided with a sleeve hole, the right end of the gas transmission pipeline is provided with a sleeve section, and the sleeve section and the sleeve hole can be mutually clamped.
4. The online monitoring system for the river-crossing gas pipeline based on the distributed optical fibers as claimed in claim 1, wherein: the annular arrays are uniformly and fixedly arranged on the arc-shaped inner walls on the peripheral sides of the transmission channels, the flat flow plates are uniformly and fixedly arranged on the arc-shaped inner walls on the peripheral sides of the right end of the monitoring section transmission channel, the right end of each flat flow plate is connected with the corresponding turbulent flow plate, and the turbulent flow plates and the flat flow plates are used for reducing turbulent flow fluctuation in gas transportation.
5. The system of claim 3, wherein the system comprises: the vibration wave monitoring assembly comprises a rotating groove which is arranged in the strain body in a penetrating mode, a rotating column is rotatably arranged in the rotating groove, one end of the rotating shaft on one side is fixedly connected to the rotating column, a turbulent flow strain gauge a and a turbulent flow strain gauge b are arranged between the rotating column and the inner wall of the rotating groove, the turbulent flow strain gauge a is fixedly arranged on the inner wall of the rotating groove, and the turbulent flow strain gauge b is fixedly arranged on the rotating column;
a rotating hole with an outward opening is formed in the rotating column, a sleeve column which extends into the rotating hole and is rotatably connected with the inner wall of the rotating hole is fixedly arranged at one end of the rotating shaft, which is fixedly connected with one end of the rotating column, on the side corresponding to the rotating shaft, a through notch is formed in one side surface of the rotating hole, a carrying block which can slide in the notch is fixedly arranged on one side surface of the sleeve column, a turbulent flow strain gauge c and a turbulent flow strain gauge d are arranged between the carrying block and the inner wall of the rotating groove, the turbulent flow strain gauge c is fixedly arranged on the inner wall of the rotating groove, and the turbulent flow strain gauge d is fixedly arranged on the carrying block;
the rotating columns between the corresponding even number of groups of the swinging bodies are designed to be staggered left and right;
the utility model discloses a strain chamber, including the spout, the spout is provided with of meeting an emergency room left side inner wall intercommunication, the fixed one end that is provided with on the left side terminal surface of straining body extends into in the spout and can gliding velocity of flow strain carrier in the spout, velocity of flow strain carrier with be provided with velocity of flow foil gage an and velocity of flow foil gage b between the spout inner wall, velocity of flow foil gage an fixed set up in on the velocity of flow strain carrier, velocity of flow foil gage b fixed set up in on the spout inner wall, what the straining body right-hand member was rotatable is connected with the base member, the base member right-hand member with fixedly connected with pushes away the spring between the straining chamber right side inner wall.
6. The system of claim 5, wherein the system comprises: the inner side of the arc-shaped inner wall of the circumferential side of the rotating hole is provided with a rotating groove in a communicated manner, the sleeve column is fixedly provided with a rotating slide block which can slide in the rotating groove, and a rotating spring is fixedly arranged between the rotating slide block and the inner wall of the rotating groove.
7. The online monitoring system for the Yangtze river-crossing gas pipeline based on the distributed optical fibers as claimed in claim 6, wherein: strain the body with sliding connection and zonulae occludens each other between the indoor wall of meeting an emergency, the axis of rotation with rotate the hole rotate the post with rotate between the hole and rotate and connect and zonulae occludens each other to this prevention foil gage and gas direct contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210675921.2A CN115164111B (en) | 2022-06-15 | 2022-06-15 | River-crossing gas pipeline on-line monitoring system based on distributed optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210675921.2A CN115164111B (en) | 2022-06-15 | 2022-06-15 | River-crossing gas pipeline on-line monitoring system based on distributed optical fiber |
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|---|---|
| CN115164111A true CN115164111A (en) | 2022-10-11 |
| CN115164111B CN115164111B (en) | 2023-06-23 |
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