阅读说明：本技术 一种供热管道安全监测方法 (Heat supply pipeline safety monitoring method ) 是由 沈小飞 周波 谢勇 潘健 林定君 曹德华 于 2021-06-23 设计创作，主要内容包括：本发明公开了一种供热管道安全监测方法,将感温光缆将感温光缆依次穿过防护板的一号穿槽和二号穿槽上,使得感温光缆螺旋式缠绕在外套管上,之后,将外套板上的连接板对应插入防护板的连接槽内,直至固定槽与插槽对其,在利用螺栓插入固定槽与插槽使得螺栓与固定槽和插槽螺纹连接。本发明中感温光缆穿过防护板且利用外套板对其进行保护固定,能够有效的使得感温光缆与外套管充分触接,且感温光缆螺旋缠绕在外套管上,能够增大感温光缆与外套管的接触面积,进而可以更加全面对外套管表面的温度进行监测,使得监测范围更广,监测更加精准,避免传统的因为感温光缆接触面积过于局限导致的监测不到位出现的供热管道破裂而不知的情况。(The invention discloses a heat supply pipeline safety monitoring method, which comprises the steps of sequentially enabling a temperature sensing optical cable to penetrate through a first penetrating groove and a second penetrating groove of a protection plate, enabling the temperature sensing optical cable to be spirally wound on an outer sleeve, correspondingly inserting a connecting plate on the outer sleeve plate into a connecting groove of the protection plate until the fixing groove is aligned with an inserting groove, and enabling a bolt to be in threaded connection with the fixing groove and the inserting groove by utilizing the bolt to be inserted into the fixing groove and the inserting groove. According to the invention, the temperature sensing optical cable penetrates through the protection plate and is protected and fixed by the outer sleeve plate, so that the temperature sensing optical cable can be effectively and fully contacted with the outer sleeve, and the temperature sensing optical cable is spirally wound on the outer sleeve, so that the contact area between the temperature sensing optical cable and the outer sleeve can be increased, the temperature on the surface of the outer sleeve can be monitored more comprehensively, the monitoring range is wider, the monitoring is more accurate, and the situation that the traditional heat supply pipeline which is not monitored is broken and is unknown due to the fact that the contact area of the temperature sensing optical cable is too limited is avoided.)

1. A heat supply pipeline safety monitoring method is characterized by comprising the following steps;

sequentially penetrating the temperature-sensing optical cable through the first penetrating groove and the second penetrating groove of the protection plate to enable the temperature-sensing optical cable to be spirally wound on the outer sleeve, correspondingly inserting a connecting plate on the outer sleeve plate into a connecting groove of the protection plate until the fixing groove and the inserting groove are aligned, inserting the bolt into the fixing groove and the inserting groove to enable the bolt to be in threaded connection with the fixing groove and the inserting groove, fixing the outer sleeve plate, and protecting and fixing the temperature-sensing optical cable by using a fixing pad on the inner side surface of the outer sleeve plate;

the connection point of the temperature sensing optical cable is arranged in a weak current well mode and used for placing a welding box, and the bending radius of the temperature sensing optical cable is larger than 30 cm;

the backfilling process comprises the steps of backfilling fine sand, and backfilling sandy soil and the like after the fine sand is completely covered.

And in the backfilling process, an OTDR (optical time Domain reflectometer), a 650nm laser signal and the like are used at one end of the optical cable to monitor the backfilling process in real time, so that the optical cable is prevented from being damaged in the backfilling process.

After the backfilling of the buried pipeline is finished, measuring by using instruments such as OTDR (optical time Domain reflectometer) and the like to ensure that the connection and attenuation of the temperature sensing optical cable meet the requirement of temperature measurement;

arranging the monitoring host in a corresponding equipment room, and connecting the temperature sensing optical cable with the monitoring host;

acquiring the geographical position of the corresponding position of the temperature sensing optical cable;

the distributed optical fiber temperature measurement system adopts optical fibers as carriers of sensitive information sensing and signal transmission, utilizes the temperature effect of optical fiber backward Raman scattering spectrum to measure the temperature field information of the optical fibers, utilizes the optical time domain reflection technology of the optical fibers to realize the positioning of the measurement, the monitoring platform displays the pipeline temperature data sent by the monitoring host at the corresponding position of a D pipeline model in real time, and can push abnormal alarm conditions in the modes of short messages and the like, the monitoring host comprises a laser source and a signal processing module, a temperature sensing optical cable is spirally wound on the outer side of an outer sleeve of a heat supply pipeline and generates a reflected light sensing signal for laser of the laser source, the processing module obtains the temperature of each point along the temperature sensing optical cable based on the reflected light sensing signal, and whether a leakage point exists or not is judged by detecting a temperature mutation point and a temperature abnormal point, and to locate the leak when a leak exists.

2. The method for monitoring the safety of the heat supply pipeline according to claim 1, wherein the monitoring mechanism is used for realizing the overall work in the step method, and the monitoring mechanism is used for realizing the effective and safe detection of the heat supply pipeline.

3. The heat supply pipeline safety monitoring method according to claim 2, characterized in that: the monitoring mechanism comprises a monitoring platform (1), a monitoring host (2), a temperature sensing optical cable (3) and an outer sleeve (5), and is characterized in that;

the monitoring host (2) is connected with the temperature sensing optical cable (3) through an optical fiber flange, the monitoring host (2) is in bidirectional data communication with the monitoring platform (1) in a wireless mode, and the temperature sensing optical cable (3) is movably inserted on the protection plate (6);

the temperature sensing optical cable is wrapped on the outer sleeve (5) through the locking mechanism;

the locking mechanism comprises a locking groove (501) formed in the side wall of the outer sleeve (5), a communicating groove (18) communicated with the locking groove (501) is formed in the locking groove (501), a locking piece (20) is arranged in the communicating groove (18) in a sliding mode, and the locking piece (20) and the communicating groove (18) are fixedly connected through an elastic piece (19);

the protection plate (6) is installed on the outer sleeve (5), one end, far away from the monitoring host (2), of the temperature sensing optical cable (3) is electrically connected with the weak electric well (4), the weak electric well (4) is arranged on the protection plate (6), the outer side of the protection plate (6) is provided with an outer sleeve plate (15), the outer sleeve plate (15) is detachably connected with the protection plate (6), the side face and the bottom of the protection plate (6) are respectively provided with a first through groove (7) and a second through groove (8) in a penetrating mode, the temperature sensing optical cable (3) penetrates through the first through groove (7) and the second through groove (8), the two sides of the part, arranged inside the protection plate (6), of the temperature sensing optical cable (3) are respectively provided with a first limiting plate (9) and a second limiting plate (10), the protection plate (6) is provided with a connecting groove (11), and the connecting groove (11) is provided with a fixing groove (12) in a penetrating mode, all correspond on spread groove (11) and insert and be equipped with connecting plate (13), connecting plate (13) are installed on outer sheathing (15), outer sheathing (15) are provided with two, run through around all on connecting plate (13) and seted up slot (14), the medial surface of outer sheathing (15) is the cambered surface, all be provided with fixed bolster (16) on the medial surface of outer sheathing (15), be provided with heat supply pipeline (17) in outer tube (5).

4. The heat supply pipeline safety monitoring method according to claim 3, wherein: no. one limiting plate (9) and No. two limiting plates (10) all weld on the inner wall of guard plate (6), the one side of a limiting plate (9) and No. two limiting plates (10) and temperature sensing optical cable (3) contact is the cambered surface.

5. The heat supply pipeline safety monitoring method according to claim 4, wherein: the connection point of the temperature sensing optical cable (3) in a fusion welding mode adopts a weak electric well (4) arrangement mode, and the bending radius of the temperature sensing optical cable (3) is larger than 30 cm.

6. The heat supply pipeline safety monitoring method according to claim 5, wherein the cross-sectional dimension of the insertion groove (14) is the same as that of the fixing groove (12), and both inner walls are provided with thread turns.

7. The safety monitoring method for the heat supply pipeline is characterized in that the fixing pad (16) is made of soft rubber, and the surface of the fixing pad is provided with anti-skid lines.

Technical Field

The invention relates to the technical field of heat supply pipeline safety monitoring, in particular to a heat supply pipeline safety monitoring method.

Background

In the prior art, a heat pipeline is a pipeline for conveying heat energy media such as steam or superheated water. After urban transformation for many years, thermal pipelines of large and medium-sized cities are laid underground, and the thermal pipelines comprise pipe ditch laying and direct burial laying. The thermal pipeline can receive the effect of high temperature, wearing and tearing, physics, chemistry in the use, and the disturbance of peripheral underground works construction and ground traffic dynamic load, the thermal pipeline can produce defects such as crackle, deformation, joint damage gradually, and then evolves to accident such as fracture, water leakage. If a large amount of water leakage or even breakage accidents of pipelines occur during heat supply, due to the fact that the temperature of heat supply media is high, the pressure is high, the flow rate is high, the emergency difficulty is large, the damage of hot water to other underground public facilities is large, and the loss is difficult to estimate.

The method is characterized in that a flow pressure method is generally adopted in the existing pipeline leakage detection method, a pressure transmitter and a flow meter are installed at the nodes of a thermal power pipeline network, the pressure wave drop of the interstation pipeline during normal operation is in an oblique straight line, when leakage occurs, the flow in front of the leakage point is increased, the pressure drop is fast, the flow behind the leakage point is slow, and the pressure gradient is flattened. The pressure drop along the whole pipeline is in a broken line shape, and the leakage degree and the leakage position can be determined according to the gradient characteristics and the inflection point position of the pressure curve. The invention provides a heat supply pipeline safety monitoring method, which can accurately monitor the heat supply pipeline safety in real time, and has the advantages that the heat supply pipeline safety monitoring method can be used for solving the problem that the error of positioning precision is too large, the maintenance is difficult due to the fact that the abnormal image characteristics can occur under the condition of no leakage caused by the change of the operation conditions during the adjustment of a pump and a valve, the maintenance is difficult due to the fact that the error of the positioning precision is too large, the leakage size is difficult to estimate, the maintenance plan is difficult to make, the operation can be carried out according to the actual condition after excavation, the maintenance time is greatly prolonged, and the maintenance cost is increased.

Disclosure of Invention

The invention aims to provide a heat supply pipeline safety monitoring method to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a heat supply pipeline safety monitoring method comprises the following steps;

sequentially penetrating the temperature-sensing optical cable through the first penetrating groove and the second penetrating groove of the protection plate to enable the temperature-sensing optical cable to be spirally wound on the outer sleeve, correspondingly inserting a connecting plate on the outer sleeve plate into a connecting groove of the protection plate until the fixing groove and the inserting groove are aligned, inserting the bolt into the fixing groove and the inserting groove to enable the bolt to be in threaded connection with the fixing groove and the inserting groove, fixing the outer sleeve plate, and protecting and fixing the temperature-sensing optical cable by using a fixing pad on the inner side surface of the outer sleeve plate;

the connection point of the temperature sensing optical cable is arranged in a weak current well mode and used for placing a welding box, and the bending radius of the temperature sensing optical cable is larger than 30 cm;

the backfilling process comprises the steps of backfilling fine sand, and backfilling sandy soil and the like after the fine sand is completely covered.

And in the backfilling process, an OTDR (optical time Domain reflectometer), a 650nm laser signal and the like are used at one end of the optical cable to monitor the backfilling process in real time, so that the optical cable is prevented from being damaged in the backfilling process.

After the backfilling of the buried pipeline is finished, measuring by using instruments such as OTDR (optical time Domain reflectometer) and the like to ensure that the connection and attenuation of the temperature sensing optical cable meet the requirement of temperature measurement;

arranging the monitoring host in a corresponding equipment room, and connecting the temperature sensing optical cable with the monitoring host;

acquiring the geographical position of the corresponding position of the temperature sensing optical cable;

the distributed optical fiber temperature measurement system adopts optical fibers as carriers of sensitive information sensing and signal transmission, utilizes the temperature effect of optical fiber backward Raman scattering spectrum to measure the temperature field information of the optical fibers, utilizes the optical time domain reflection technology of the optical fibers to realize the positioning of the measurement, the monitoring platform displays the pipeline temperature data sent by the monitoring host at the corresponding position of a D pipeline model in real time, and can push abnormal alarm conditions in the modes of short messages and the like, the monitoring host comprises a laser source and a signal processing module, a temperature sensing optical cable is spirally wound on the outer side of an outer sleeve of a heat supply pipeline and generates a reflected light sensing signal for laser of the laser source, the processing module obtains the temperature of each point along the temperature sensing optical cable based on the reflected light sensing signal, and whether a leakage point exists or not is judged by detecting a temperature mutation point and a temperature abnormal point, and to locate the leak when a leak exists.

Preferably, in the above step method, the monitoring mechanism is used to realize the whole work, and the monitoring mechanism is used to realize the effective and safe detection of the heat supply pipeline.

Preferably, the monitoring mechanism comprises a monitoring platform, a monitoring host, a temperature-sensing optical cable, an outer sleeve,

the monitoring host and the temperature sensing optical cable are connected through an optical fiber flange, the monitoring host and the monitoring platform are in bidirectional data communication in a wireless mode, and the temperature sensing optical cable is movably inserted on the protection plate;

the temperature sensing optical cable is wrapped on the outer sleeve through the locking mechanism;

the locking mechanism comprises a locking groove formed in the side wall of the outer sleeve, a communicating groove communicated with the locking groove is formed in the locking groove, a locking piece is arranged in the communicating groove in a sliding mode, and the locking piece and the communicating groove are fixedly connected through an elastic piece;

the protection plate is arranged on the outer sleeve, one end of the temperature-sensing optical cable, which is far away from the monitoring host, is electrically connected with the weak electric well, the weak electric well is arranged on the protection plate, the outer side of the protection plate is provided with an outer sleeve plate, the outer sleeve plate is detachably connected with the protection plate, the side surface and the bottom of the protection plate are respectively provided with a first through groove and a second through groove in a penetrating way, the temperature-sensing optical cable passes through the first through groove and the second through groove, the two sides of the part of the temperature-sensing optical cable, which is arranged inside the protection plate, are respectively provided with a first limiting plate and a second limiting plate, the protection plate is provided with a connecting groove, the connecting groove is provided with a fixing groove in a penetrating way, the connecting groove is correspondingly inserted with a connecting plate, the connecting plate is arranged on the outer sleeve plate, the outer sleeve plate is provided with two blocks, the connecting plate is provided with slots in a penetrating way in the front and back, and the inner side surface of the outer sleeve plate is a cambered surface, all be provided with the fixed bolster on the medial surface of outer sleeve plate, be provided with heat supply pipeline in the outer tube.

Preferably, the first limiting plate and the second limiting plate are welded on the inner wall of the protection plate, and the surfaces of the first limiting plate and the second limiting plate, which are in contact with the temperature sensing optical cable, are cambered surfaces.

Preferably, the connection point of the temperature sensing optical cable is arranged in a weak current well, and the bending radius of the temperature sensing optical cable 3 is greater than 30 cm.

Preferably, the sectional dimension of the slot is the same as that of the fixing slot, and the inner walls of the slot are provided with thread rings.

Preferably, the fixing pad is made of soft rubber and provided with anti-skid lines on the surface.

Compared with the prior art, the invention has the beneficial effects that: the invention realizes the monitoring of leakage points based on the temperature signals of the temperature sensing optical cable, further realizes the leakage monitoring of the whole buried heat supply pipeline, realizes the large-range coverage and real-time monitoring of the leakage condition of the heat supply pipeline network, adopts the distributed optical fiber temperature measurement mode to monitor the whole buried pipeline in a whole line mode, has no measuring blind area, accurate positioning, can quickly position the leakage position, has the advantages of high temperature sensitivity, high positioning precision, long measuring distance, suitability for remote monitoring, short measuring period and quick response, adopts the optical cable as a sensor, has high reliability and anti-electromagnetic interference, adopts the temperature sensing optical cable as a sensor, and utilizes an outer sleeve plate to protect and fix the temperature sensing optical cable, can effectively lead the temperature sensing optical cable to be fully contacted with the outer sleeve, and the temperature sensing optical cable is spirally wound on the outer sleeve, can increase the contact area of the temperature sensing optical cable and the outer sleeve, and then can monitor the temperature on outer sleeve pipe surface more comprehensively for monitoring range is wider, and the monitoring is more accurate, avoids the traditional heat supply pipeline that the monitoring that leads to because temperature sensing optical cable area of contact too limits does not appear in place to break and the condition of knowing.

According to the specific laying mode of the optical cable, the optical cable can be protected from being damaged to the maximum extent by arranging the optical cable below the pipeline side according to actual construction experience, the optical cable can be protected to the maximum extent by backfilling fine sand, the heat transfer performance can be guaranteed, and the leakage position point can be confirmed quickly.

According to the processing mode of optical cable connection, the buried pipelines are all laid in a sectional mode according to actual construction experience on site, the mode of embedding the weak current well can be kept synchronous with pipeline construction, additional independent operation is not needed, and meanwhile convenience is provided for later system debugging.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a side view of a fender panel of the invention;

FIG. 3 is a block diagram of the connection plate of the present invention;

FIG. 4 is a flow chart of the present invention;

FIG. 5 is a cross-sectional view of the locking mechanism of the present invention;

fig. 6 is an enlarged view of a portion a of the present invention.

In the figure: 1. a monitoring platform; 2. monitoring the host; 3. a temperature sensing optical cable; 4. a weak current well; 5. an outer sleeve; 501. a locking groove; 6. a protection plate; 7. a first through groove; 8. a second groove is penetrated; 9. a first limiting plate; 10. a second limiting plate; 11. connecting grooves; 12. fixing grooves; 13. a connecting plate; 14. a slot; 15. an outer race plate; 16. a fixing pad; 17. a heat supply pipeline; 18. a communicating groove; 19. an elastic member; 20. a locking member.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a method for monitoring the safety of a heat supply pipeline, which comprises the following steps;

sequentially penetrating the temperature-sensing optical cable through the first penetrating groove and the second penetrating groove of the protection plate to enable the temperature-sensing optical cable to be spirally wound on the outer sleeve, correspondingly inserting a connecting plate on the outer sleeve plate into a connecting groove of the protection plate until the fixing groove and the inserting groove are aligned, inserting the bolt into the fixing groove and the inserting groove to enable the bolt to be in threaded connection with the fixing groove and the inserting groove, fixing the outer sleeve plate, and protecting and fixing the temperature-sensing optical cable by using a fixing pad on the inner side surface of the outer sleeve plate;

the connection point of the temperature sensing optical cable is arranged in a weak current well mode and used for placing a welding box, and the bending radius of the temperature sensing optical cable is larger than 30 cm;

the backfilling process comprises the steps of backfilling fine sand, and backfilling sandy soil and the like after the fine sand is completely covered.

And in the backfilling process, an OTDR (optical time Domain reflectometer), a 650nm laser signal and the like are used at one end of the optical cable to monitor the backfilling process in real time, so that the optical cable is prevented from being damaged in the backfilling process.

After the backfilling of the buried pipeline is finished, measuring by using instruments such as OTDR (optical time Domain reflectometer) and the like to ensure that the connection and attenuation of the temperature sensing optical cable meet the requirement of temperature measurement;

arranging the monitoring host in a corresponding equipment room, and connecting the temperature sensing optical cable with the monitoring host;

acquiring the geographical position of the corresponding position of the temperature sensing optical cable;

the distributed optical fiber temperature measurement system adopts optical fibers as carriers of sensitive information sensing and signal transmission, utilizes the temperature effect of optical fiber backward Raman scattering spectrum to measure the temperature field information of the optical fibers, utilizes the optical time domain reflection technology of the optical fibers to realize the positioning of the measurement, the monitoring platform displays the pipeline temperature data sent by the monitoring host at the corresponding position of a D pipeline model in real time, and can push abnormal alarm conditions in the modes of short messages and the like, the monitoring host comprises a laser source and a signal processing module, a temperature sensing optical cable is spirally wound on the outer side of an outer sleeve of a heat supply pipeline and generates a reflected light sensing signal for laser of the laser source, the processing module obtains the temperature of each point along the temperature sensing optical cable based on the reflected light sensing signal, and whether a leakage point exists or not is judged by detecting a temperature mutation point and a temperature abnormal point, and locating the leakage position when a leakage point exists;

in the method, the whole work is realized through the monitoring mechanism, and the effective and safe detection of the heat supply pipeline is realized through the monitoring mechanism;

the monitoring mechanism comprises a monitoring platform 1, a monitoring host 2, a temperature sensing optical cable 3 and an outer sleeve 5;

the monitoring host 2 and the temperature sensing optical cable 3 are connected through an optical fiber flange, the monitoring host 2 and the monitoring platform 1 carry out bidirectional data communication in a wireless mode, and the temperature sensing optical cable 3 is movably inserted on the protection plate 6;

the temperature sensing optical cable 3 is wrapped on the outer sleeve 5 through a locking mechanism;

the locking mechanism comprises a locking groove 501 arranged on the side wall of the outer sleeve 5, a communicating groove 18 communicated with the locking groove 501 is arranged in the locking groove 501, a locking piece 20 is arranged in the communicating groove 18 in a sliding mode, and the locking piece 20 and the communicating groove 18 are fixedly connected through an elastic piece 19;

the falling off of the temperature sensing optical cable 3 can be effectively avoided through the arrangement of the locking mechanism;

furthermore, the temperature sensing optical cable 3 is extruded to enter the locking groove 501, so that the locking piece 20 is contracted inwards, the extrusion of the elastic piece 19 is realized, when the temperature sensing optical cable 3 completely enters the locking groove 501, the maximum diameter of the temperature sensing optical cable 3 is exceeded, the pushing of the locking piece 20 is realized due to the restoring force of the elastic piece 19, and the locking work of the temperature sensing optical cable 3 is further realized;

the protection plate 6 is arranged on the outer sleeve 5, one end of the temperature sensing optical cable 3, which is far away from the monitoring host 2, is electrically connected with the weak electric well 4, the arrangement mode of the weak electric well 4 is adopted for the welded connection point of the temperature sensing optical cable 3, the bending radius of the temperature sensing optical cable 3 is more than 30cm, the weak electric well 4 is arranged on the protection plate 6, the outer side of the protection plate 6 is provided with an outer sleeve plate 15, the outer sleeve plate 15 is detachably connected with the protection plate 6, the side surface and the bottom of the protection plate 6 are respectively provided with a first through groove 7 and a second through groove 8 in a penetrating way, the temperature sensing optical cable 3 passes through the first through groove 7 and the second through groove 8, two sides of the part of the temperature sensing optical cable 3, which is arranged inside the protection plate 6, are respectively provided with a first limiting plate 9 and a second limiting plate 10, the first limiting plate 9 and the second limiting plate 10 are welded on the inner wall of the protection plate 6, and the surfaces of the first limiting plate 9 and the second limiting plate 10, which are contacted with the temperature sensing optical cable 3 are cambered surfaces, the connecting groove 11 has been seted up on the guard plate 6, run through around on the connecting groove 11 and seted up fixed slot 12, it is equipped with connecting plate 13 all to correspond to insert on the connecting groove 11, connecting plate 13 is installed on outer jacket plate 15, outer jacket plate 15 is provided with two, run through around on the connecting plate 13 and seted up slot 14, slot 14's cross sectional dimension is the same with fixed slot 12's cross sectional dimension and all is provided with the screw thread circle on the inner wall, outer jacket plate 15's medial surface is the cambered surface, all be provided with fixed bolster 16 on outer jacket plate 15's the medial surface, fixed bolster 16 adopts soft rubber to make and the surface is provided with anti-skidding line, be provided with heat supply pipeline 17 in the outer tube 5.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.