CN214040427U - Temperature detection device structure for preventing cathodic protection current loss - Google Patents
Temperature detection device structure for preventing cathodic protection current loss Download PDFInfo
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- CN214040427U CN214040427U CN202120021982.8U CN202120021982U CN214040427U CN 214040427 U CN214040427 U CN 214040427U CN 202120021982 U CN202120021982 U CN 202120021982U CN 214040427 U CN214040427 U CN 214040427U
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- temperature sensor
- temperature transmitter
- buried pipeline
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Abstract
The utility model provides a prevent temperature-detecting device structure of cathodic protection current loss for detect the fluid temperature in the buried pipeline that receives cathodic protection, this temperature-detecting device structure includes: install whole type outer protective case, temperature sensor, shielded cable, temperature transmitter, signal cable and earth connection on buried pipeline, wherein, this temperature sensor's probe is installed in whole type outer protective case, and this temperature sensor's signal output part passes through shielded cable and temperature transmitter's signal input part electric connection, this temperature transmitter's signal output part passing signal cable and external equipment electric connection, and the one end and the shell of temperature transmitter of this earth connection are connected, other end ground connection. Therefore, the shielding cable with external insulation is connected between the temperature sensor and the temperature transmitter which are installed separately, so that the insulation between the temperature sensor and the temperature transmitter and between the temperature sensor and the ground can be ensured, and the cathode protection current of the buried pipeline is prevented from being led out and lost.
Description
Technical Field
The utility model relates to a temperature-detecting device especially relates to a temperature-detecting device structure that is arranged in carrying out the fluid temperature who detects among the buried pipeline that receives cathodic protection and prevents cathodic protection current loss.
Background
At present, natural gas long-distance pipelines are buried underground, and in order to prevent metal pipelines from being corroded, all the underground pipelines are provided with cathode protection systems. Typically, the insulation of the line block valve chamber is provided downstream of the restricted orifice plate of the vent line, and for a temperature sensing device installed in an underground pipeline, the housing of the temperature sensing device is typically grounded to prevent the sensing signal from being disturbed. At present, the application of integrating a temperature sensor and a temperature transmitter is widely adopted in the application of detecting the temperature of fluid in a pipeline, so that the phenomenon that the cathodic protection current on the buried pipeline runs off along the grounding wire of a temperature detection device can be caused, the effect of cathodic protection of the buried pipeline is influenced, even the service life of the buried pipeline is influenced, and potential safety hazards are formed.
Therefore, designing a temperature detection device that does not affect the cathodic protection effect of a buried pipeline and can ensure accurate detection of the temperature of a fluid in the buried pipeline has become one of the issues to be addressed in the art.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the technical scheme is how to provide a temperature detection device to ensure that the loss of cathodic protection current can not be caused when the temperature of fluid in a buried pipeline is detected.
In order to solve the above technical problem, this technical scheme provides a temperature detection device structure for preventing cathodic protection current loss for detect the fluid temperature in the buried pipeline that receives cathodic protection, this temperature detection device structure includes: install whole type outer protective case on buried pipeline, temperature sensor, shielded cable, temperature transmitter, signal cable and earth connection, wherein, temperature sensor's probe is installed in whole type outer protective case, temperature sensor's signal output part passes through shielded cable and temperature transmitter's signal input part electric connection, temperature transmitter's signal output part passes through signal cable and external equipment electric connection, the one end and the temperature transmitter's of earth connection shell are connected, the other end ground connection of earth connection. In view of the above, through the components of a whole that can function independently installation of temperature sensor and temperature transmitter, and regard as intermediate junction spare with the shielded cable of external insulation, make the temperature sensor who installs on buried pipeline keep apart with temperature transmitter relatively, temperature sensor and temperature transmitter's insulation and temperature sensor to the insulation of ground have been ensured, in order to avoid connecting the cathodic protection current derivation loss on the ground wire that connects on temperature transmitter will bury the ground pipeline, and can ensure that temperature sensor does not receive stray current's interference to temperature data's sensing and temperature transmitter to temperature data's transmission, thereby under the prerequisite of guaranteeing that temperature detection and data transfer synchronous stability go on, the emergence of the buried pipeline because of the corruption circumstances that cathodic protection current loss caused has been avoided.
As another implementation of the technical scheme, the signal output end of the temperature sensor and the signal input end of the temperature transmitter are both provided with non-armored cable clamp tight sealing joints, and two ends of the shielding cable are electrically connected with the signal output end of the temperature sensor and the signal input end of the temperature transmitter through the non-armored cable clamp tight sealing joints. Therefore, the tight sealing joint of the non-armored cable clamp can effectively prevent current conduction and cathodic protection current loss between the temperature sensor and the temperature transmitter.
As another implementation of the present technical solution, the shielded cable is an unarmored shielded cable. Therefore, the conduction of the cathodic protection current outside the shielded cable can be effectively prevented.
As another implementation of this technical solution, the temperature detection device structure further includes: the anti-explosion flexible connecting pipe and the cable protection pipe are sleeved outside the signal cable, one end of the anti-explosion flexible connecting pipe is connected with the signal output end of the temperature transmitter, the other end of the anti-explosion flexible connecting pipe is connected with one end of the cable protection pipe, and the other end of the cable protection pipe is provided with a wire protection cap. Therefore, the explosion-proof flexible connecting pipe can well protect the signal cable, has flexibility and is not easy to break after being bent and deformed.
As another implementation of the technical scheme, the signal output end of the temperature transmitter is provided with an armored cable clamp tight sealing connector, and one end of the explosion-proof flexible connecting pipe is connected with the armored cable clamp tight sealing connector.
As another implementation of the technical scheme, one end of the grounding wire is connected to the tight sealing joint of the armored cable clamp, and the other end of the grounding wire is connected to the cable protection pipe. In this way, stray interference currents can be conducted out by means of the cable protection tube, so that stability of data transmission of the temperature transmitter is ensured.
As another implementation of this technical solution, the temperature detection device structure further includes: and the cable strapping tape is wound with a grounding wire and the explosion-proof flexible connecting pipe and tightly bundles the grounding wire on the outer wall surface of the explosion-proof flexible connecting pipe.
As another implementation of the technical solution, the two ends of the grounding wire are provided with wiring ends, the wiring ends are provided with through holes, the armored cable clamping sealing connector is sleeved with the grounding ring piece and is provided with screw holes thereon, the cable protection tube is also provided with screw holes, and the wiring ends at the two ends of the grounding wire are respectively connected with the grounding ring piece and the cable protection tube by penetrating through the through holes and the screw holes through bolts. Therefore, the grounding wire is conveniently connected to the armored cable clamp tight sealing joint of the temperature transmitter and the cable protection pipe to realize the diversion of stray interference current, the service length of the grounding wire can be reduced, and the use cost of materials is saved.
As another implementation of this technical solution, the temperature detection device structure further includes: one end of the galvanized steel pipe is connected with the cable protection pipe, and the other end of the galvanized steel pipe is connected with the grounding grid. This allows stray interference currents on the cable protection tube to be conducted into the earth grid.
As another implementation of the technical scheme, the integral outer protective sleeve is a nozzle integral protective sleeve, a temperature detection cavity is formed in the nozzle integral protective sleeve, a probe rod of the temperature sensor is arranged in the temperature detection cavity, and the integral outer protective sleeve is inserted and fixedly arranged on the wall surface of the buried pipeline along the radial direction of the buried pipeline and enables part of the temperature detection cavity to be positioned in the buried pipeline. Therefore, the temperature of the fluid in the buried pipeline can be accurately detected by the probe.
Drawings
Fig. 1 is a schematic diagram of the structure of the temperature detecting device for preventing the cathode protection current from running off.
Symbolic illustration in the drawings:
1 temperature detection device structure; 2 integral outer protective sleeve; 21, a temperature detection cavity; 3 a temperature sensor; 31 a probe; 4 shielding the cable; 5, a temperature transmitter; 6 a signal cable; 61 explosion-proof flexible connecting pipe; 62 a cable protection tube; 63 a wire protecting cap; 7, grounding wires; 71 a terminal; 72 a ground ring plate; 8, clamping the non-armored cable to form a sealing joint; 9 tightly sealing the connector by an armored cable clamp; 10 cable strapping tape; 11 a galvanized steel pipe; 12 buried pipeline.
Detailed Description
The following detailed description and technical contents of the present invention are described with reference to the drawings, but the drawings are only for reference and illustration and are not intended to limit the present invention.
Fig. 1 is a schematic diagram of a structure of a temperature detecting device for preventing a cathodic protection current from running off according to an embodiment of the present invention. The temperature detection device structure 1 for preventing the cathode protection current loss (hereinafter referred to as the temperature detection device structure 1) is used for detecting the temperature of fluid in a buried pipeline 12 protected by a cathode, and the temperature detection device structure 1 comprises an integral outer protection sleeve 2, a temperature sensor 3, a shielding cable 4, a temperature transmitter 5, a signal cable 6 and a grounding wire 7, wherein the integral outer protection sleeve is installed on the buried pipeline 12. The probe 31 of the temperature sensor 3 is installed in the integral outer protective sleeve 2, the signal output end of the temperature sensor 3 is electrically connected with the signal input end of the temperature transmitter 5 through the shielding cable 4, the signal output end of the temperature transmitter 5 is electrically connected with an external device (not shown) through the signal cable 6, one end of the grounding wire 7 is connected with the housing of the temperature transmitter 5, and the other end of the grounding wire 7 is grounded.
More specifically, the integral type outer protective sleeve 2 is a nozzle-integrated protective sleeve and has a temperature detection chamber 21 formed therein, and the probe 31 of the temperature sensor 3 is installed in the temperature detection chamber 21. The integral outer protective sleeve 2 is fixedly inserted in the wall surface of the buried pipeline 12 along the radial direction of the buried pipeline 12, and part of the temperature detection cavity 21 is positioned in the buried pipeline 12, so that the temperature of fluid in the buried pipeline 12 can be accurately detected by ensuring that the probe 31 of the temperature sensor 3 is also positioned in the buried pipeline 12.
In this embodiment, the signal output terminal of the temperature sensor 3 and the signal input terminal of the temperature transmitter 5 are both provided with the non-armored cable clamp tight sealing connector 8, and the two ends of the shielding cable 4 are electrically connected with the signal output terminal of the temperature sensor 3 and the signal input terminal of the temperature transmitter 5 through the non-armored cable clamp tight sealing connector 8. The non-armoured cable clamps the sealing joint 8 to ensure the insulation between the outer shell of the temperature sensor 3 or the temperature transmitter 5 and the outside of the shielded cable 4, so as to effectively prevent the current conduction between the temperature sensor 3 and the temperature transmitter 5 and the loss of the cathodic protection current on the buried pipeline 12. In addition, the shielded cable 4 can be an unarmored shielded cable, so as to effectively prevent the conduction of the cathodic protection current outside the shielded cable 4.
In this embodiment, the temperature detecting device structure 1 may further include an explosion-proof flexible connecting tube 61 and a cable protecting tube 62 sleeved outside the signal cable 6. One end of the explosion-proof flexible connecting pipe 61 is connected with the signal output end of the temperature transmitter 5, the other end of the explosion-proof flexible connecting pipe 61 is connected with one end of the cable protection pipe 62, and the other end of the cable protection pipe 62 is provided with the wire protection cap 63, so that the signal cable 6 can be well protected, and the explosion-proof flexible connecting pipe 61 is flexible and is not easy to break after being bent and deformed.
In this embodiment, the signal output end of the temperature transmitter 5 may further be installed with an armored cable clamping and sealing connector 9, and one end of the explosion-proof flexible connecting pipe 61 is connected with the armored cable clamping and sealing connector 9. One end of the grounding wire 7 is connected to the armored cable clamping and sealing connector 9, and the other end of the grounding wire 7 is connected to the cable protection pipe 62. The specific connecting mode can be as follows: the two ends of the grounding wire 7 can both have a wiring terminal 71, the wiring terminal 71 is provided with a through hole (not marked in the figure), the armored cable clamping sealing connector 9 is sleeved with a grounding ring piece 72 and is provided with a screw hole (not marked in the figure), the cable protection pipe 62 is also provided with a screw hole (not marked in the figure), the wiring terminals 71 at the two ends of the grounding wire 7 are respectively connected with the grounding ring piece 72 and the cable protection pipe 62 through the through hole and the screw hole by bolts (not marked in the figure), so that stray interference current can be led out by means of the cable protection pipe 62, the stability of data transmission of the temperature transmitter 5 is ensured, the use length of the grounding wire 7 can be reduced, and the use cost of materials is saved.
In this embodiment, the temperature detecting device structure 1 may further include a cable binding band 10, and the cable binding band 10 is wound around the grounding wire 7 and the explosion-proof flexible connection pipe 61 to tightly bind the grounding wire 7 to the outer wall surface of the explosion-proof flexible connection pipe 61.
In this embodiment, the temperature detecting device structure 1 may further include a galvanized steel pipe 11, one end of the galvanized steel pipe 11 may be welded to the cable protection pipe 62, and the other end of the galvanized steel pipe 11 is connected to a grounding grid (not shown), so as to guide the stray interference current guided by the cable protection pipe 62 into the grounding grid.
The utility model provides a temperature sensor, temperature transmitter, armor and non-armor cable clamp closely seal the joint, and non-armor shielded cable is current device, no longer gives unnecessary details to the structure of above-mentioned current device here.
To sum up, the utility model discloses a components of a whole that can function independently installation of temperature sensor and temperature transmitter to and regard as the intermediate junction spare with the shielded cable of external insulation, make the temperature sensor who installs on buried pipeline keep apart with temperature transmitter relatively, with avoid connecting the earth connection on temperature transmitter will bury the cathodic protection current derivation loss on the pipeline, and can ensure that temperature sensor does not receive stray current interference to the sensing of temperature data and temperature transmitter to the transmission of temperature data, thereby under the prerequisite of guaranteeing that temperature detection and data transfer synchronous stability go on, the emergence of the corrosion condition that buried pipeline caused because of cathodic protection current loss has been avoided.
Above only be the preferred embodiment of the utility model discloses a not be used for injecing the utility model discloses a patent range, other applications the utility model discloses an equivalent change that the patent design was done all should belong to the patent protection scope of the utility model.
Claims (10)
1. A temperature sensing device structure for preventing cathodic protection current loss for sensing the temperature of a fluid in a cathodically protected buried pipeline, comprising: the integral outer protective sleeve, the signal cable and the grounding wire are arranged on the buried pipeline; characterized in that, the temperature detection device structure still includes: temperature sensor, shielded cable and temperature transmitter, temperature sensor's probe install in the outer protective case of whole type, temperature sensor's signal output part passes through shielded cable with temperature transmitter's signal input part electric connection, temperature transmitter's signal output part passes through signal cable and external equipment electric connection, the one end of earth connection with temperature transmitter's shell is connected, the other end ground connection of earth connection.
2. The structure of claim 1, wherein the signal output terminal of the temperature sensor and the signal input terminal of the temperature transmitter are each provided with a non-armored cable clamp sealing connector, and two ends of the shielding cable are electrically connected to the signal output terminal of the temperature sensor and the signal input terminal of the temperature transmitter through the non-armored cable clamp sealing connectors.
3. The structure of claim 2, wherein the shielded cable is an unarmored shielded cable.
4. The structure of a temperature detecting device for preventing a cathodic protection current from flowing according to claim 1, further comprising: the temperature transmitter comprises an explosion-proof flexible connecting pipe and a cable protection pipe, wherein the explosion-proof flexible connecting pipe and the cable protection pipe are sleeved outside the signal cable, one end of the explosion-proof flexible connecting pipe is connected with the signal output end of the temperature transmitter, the other end of the explosion-proof flexible connecting pipe is connected with one end of the cable protection pipe, and the other end of the cable protection pipe is provided with a wire protection cap.
5. The structure of claim 4, wherein the signal output end of the temperature transmitter is provided with a tightly sealed joint of an armored cable clamp, and one end of the explosion-proof flexible connecting pipe is connected with the tightly sealed joint of the armored cable clamp.
6. The structure of claim 5, wherein one end of the ground wire is connected to the tight sealing joint of the armored cable clamp, and the other end of the ground wire is connected to the cable protection tube.
7. The structure of claim 6, further comprising: and the cable strapping tape is wound on the grounding wire and the explosion-proof flexible connecting pipe and tightly bundles the grounding wire on the outer wall surface of the explosion-proof flexible connecting pipe.
8. The structure of claim 6, wherein the two ends of the ground wire have connection terminals, the connection terminals have through holes, the tight sealing joint of the armored cable clamp is sleeved with the grounding ring and has screw holes thereon, the cable protection tube has screw holes thereon, and the connection terminals at the two ends of the ground wire are respectively connected to the grounding ring and the cable protection tube by bolts passing through the through holes and the screw holes.
9. The structure of claim 6, further comprising: one end of the galvanized steel pipe is connected with the cable protection pipe, and the other end of the galvanized steel pipe is connected with the grounding grid.
10. The structure of a temperature detecting device for preventing cathodic protection current from running off as claimed in claim 1, wherein said integral outer protective sleeve is a nozzle integral protective sleeve and a temperature detecting cavity is formed inside the nozzle integral protective sleeve, said probe is installed in said temperature detecting cavity, said integral outer protective sleeve is inserted and fixed on the wall surface of the buried pipeline along the radial direction of the buried pipeline and makes part of said temperature detecting cavity located inside the buried pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120021982.8U CN214040427U (en) | 2021-01-06 | 2021-01-06 | Temperature detection device structure for preventing cathodic protection current loss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120021982.8U CN214040427U (en) | 2021-01-06 | 2021-01-06 | Temperature detection device structure for preventing cathodic protection current loss |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214040427U true CN214040427U (en) | 2021-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120021982.8U Active CN214040427U (en) | 2021-01-06 | 2021-01-06 | Temperature detection device structure for preventing cathodic protection current loss |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214040427U (en) |
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2021
- 2021-01-06 CN CN202120021982.8U patent/CN214040427U/en active Active
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