CN114136477B - Temperature sensing device based on platinum thermal resistor - Google Patents
Temperature sensing device based on platinum thermal resistor Download PDFInfo
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- CN114136477B CN114136477B CN202111433693.XA CN202111433693A CN114136477B CN 114136477 B CN114136477 B CN 114136477B CN 202111433693 A CN202111433693 A CN 202111433693A CN 114136477 B CN114136477 B CN 114136477B
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- temperature
- temperature probe
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- temperature sensing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/18—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a linear resistance, e.g. platinum resistance thermometer
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
- G01K1/024—Means for indicating or recording specially adapted for thermometers for remote indication
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/08—Protective devices, e.g. casings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
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- General Physics & Mathematics (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention provides a temperature sensing device based on a platinum thermal resistor, which is used for measuring the temperature of fluid in a pipeline and relates to the technical field of temperature detection. The temperature sensing device based on the platinum thermal resistor comprises a fixing piece, a temperature probe and a protective sleeve, wherein the fixing piece comprises a connecting cover and a fixing base, the pipeline is provided with a fixing ring sleeve, the connecting cover is detachably connected with the fixing ring sleeve, the fixing base is arranged at the bottom in the connecting cover, the temperature probe and the protective sleeve are both detachably connected with the fixing base, the temperature probe is arranged in the protective sleeve, the protective sleeve is of a hollow structure, and the temperature probe is provided with a platinum thermal resistance wire for detecting temperature.
Description
Technical Field
The invention relates to the technical field of temperature detection, in particular to a temperature sensing device based on a platinum thermal resistor.
Background
The sensor is a detection device which can sense the measured information and convert the sensed information into an electric signal or other information in a required form according to a certain rule to output so as to meet the requirements of information transmission, processing, storage, display, recording, control and the like. The temperature sensor is a sensor which can sense temperature and convert the temperature into a usable output signal, and is classified into a thermal resistor and a thermocouple according to the characteristics of sensor materials and electronic elements. The platinum thermal resistor belongs to a thermal resistor type, is designed and manufactured by utilizing the basic principle that the resistance value of a platinum wire changes along with the change of temperature, is divided into 10 ohm (division number is Pt 10) and 100 ohm (division number is Pt 100) according to the resistance value R (DEG C) at 0 ℃, has a larger temperature measuring range and is suitable for being used at-200-850 ℃.
When the temperature of fluid in pipelines such as water and oil is measured, the temperature sensor needs to be arranged in the pipeline, the temperature sensor is easily abraded by impact or scouring generated in the flowing process of the fluid, and a common temperature sensor is easily damaged in the long term, so that the common temperature sensor cannot normally work. Therefore, the prior art is in need of improvement.
Disclosure of Invention
The invention aims to provide a temperature sensing device based on a platinum thermistor, which can provide a corresponding solution for solving the problems in the prior art and has the advantages of good protection effect and long service life.
The embodiment of the invention is realized by the following steps:
the embodiment of the application provides a temperature sensing device based on platinum resistance, a be used for measuring the fluidic temperature in the pipeline, including the mounting, temperature probe and protective case, the mounting is including connecting lid and unable adjustment base, the pipeline is provided with solid fixed ring cover, it can dismantle with solid fixed ring cover and be connected to connect the lid, gu the fixed base installs the bottom in connecting the lid, temperature probe and protective case all can dismantle with gu fixed base and be connected, temperature probe installs inside protective case, protective case is hollow out construction, temperature probe is provided with the platinum resistance silk of surveying temperature.
Through the technical scheme of this embodiment, fix temperature probe and protective case on unable adjustment base earlier during the installation, then stretch into the pipeline with temperature probe inside through the through-hole to make and connect lid and fixed ring cover and connect, accomplish the installation. When the protective sleeve is used, impact or scouring can be relieved, excessive abrasion of the temperature probe is avoided, fluid can enter the protective sleeve from the hole, and the temperature of the fluid can not be normally detected by the temperature probe, so that the protective sleeve has the beneficial effects of good protective effect and long service life.
In some embodiments of the present invention, a sealing ring is disposed in the connecting cover, and the sealing ring abuts against the top end of the fixing ring sleeve.
In some embodiments of the invention, the seal comprises a rubber seal.
In some embodiments of the present invention, a data transmission element is disposed at a top portion of the connecting cover, and the data transmission element is electrically connected to the temperature probe.
In some embodiments of the invention, the data transmission element includes a wireless rf module, the wireless rf module is connected to a wire, and the wire is electrically connected to the temperature probe.
In some embodiments of the invention, the end of the wire is connected to a spring that abuts the temperature probe.
In some embodiments of the present invention, the connection cover is provided with an internal thread, the fixing ring is sleeved with an external thread matching the internal thread of the connection cover, the fixing base is provided with an external thread, and the protection sleeve is provided with an internal thread matching the external thread of the fixing base.
In some embodiments of the present invention, the side wall outside the connecting cover is symmetrically provided with screwing handles.
In some embodiments of the present invention, a groove is formed in the center of the bottom of the fixing base, and the temperature probe is in threaded connection with the groove.
In some embodiments of the present invention, a surface of the protective sleeve is provided with a protective layer.
Compared with the prior art, the embodiment of the invention has at least the following advantages or beneficial effects:
the embodiment of the invention provides a temperature sensing device based on a platinum thermal resistor, which mainly comprises a fixing piece, a temperature probe and a protective sleeve, and is used for detecting the temperature of fluid in a pipeline. The pipeline is provided with a through hole, and the fixing ring sleeve is fixedly welded at the position of the through hole on the outer wall of the pipeline and is aligned with the through hole. The mounting is used for fixing the temperature sensing device based on platinum resistance on the pipeline, and the mounting mainly comprises connection cover and unable adjustment base two parts, and wherein connect the cover and be used for can dismantling the connection with the fixed ring cover to the realization will be based on the temperature sensing device of platinum resistance fixes on the pipeline, unable adjustment base fixed mounting puts at the bottom central point of connecting the cover, be convenient for connect temperature probe and protective case, temperature probe and protective case all install in unable adjustment base with the mode of dismantling the connection. The temperature probe is provided with a platinum resistance wire for detecting temperature, the platinum resistance wire can show different resistance values according to the environmental stability, the reaction is sensitive, and the measurement is accurate. The protective sleeve is of a hollow structure and is provided with a plurality of holes, and the temperature probe is positioned inside the protective sleeve. Through the technical scheme of this embodiment, fix temperature probe and protective case on unable adjustment base earlier during the installation, then stretch into pipeline inside with temperature probe through the through-hole to make and connect lid and fixed ring cover and connect, accomplish the installation. When the temperature probe is used, the protection sleeve can relieve impact or scouring, the temperature probe is prevented from being excessively worn, fluid can enter the protection sleeve from the hole, and the temperature of the fluid normally detected by the temperature probe is not influenced. Therefore, the temperature sensing device based on the platinum thermal resistor provided by the embodiment of the invention has the beneficial effects of good protection effect and long service life.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
FIG. 1 is a schematic diagram of an installation of a platinum thermistor-based temperature sensing device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a temperature sensing device based on a platinum thermistor according to an embodiment of the present invention.
Icon: 1-pipeline, 2-fixing piece, 201-connecting cover, 202-sealing ring, 203-fixing base, 3-temperature probe, 4-protective sleeve, 5-fixing ring sleeve, 6-data transmission element, 601-wireless radio frequency module, 602-wire, 603-spring and 7-screwing handle.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate an orientation or a positional relationship based on an orientation or a positional relationship shown in the drawings, or an orientation or a positional relationship which is usually arranged when the product of the present invention is used, it is only for convenience of description and simplification of the description, but does not indicate or imply that the device or the element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another, and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not require that the components be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the embodiments of the present invention, "a plurality" represents at least 2.
In the description of the embodiments of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
Examples
Referring to fig. 1 and fig. 2, a temperature sensing device based on a platinum thermistor according to an embodiment of the present invention is shown in the following specific structure.
The embodiment of the application provides a temperature sensing device based on platinum resistance, a temperature for measuring 1 fluidic temperature in pipeline, including mounting 2, temperature probe 3 and protective case 4, mounting 2 is including connecting lid 201 and unable adjustment base 203, pipeline 1 is provided with unable adjustment ring cover 5, it can dismantle with unable adjustment ring cover 5 to connect lid 201 and be connected, unable adjustment base 203 installs the bottom in connecting lid 201, temperature probe 3 and protective case 4 all can dismantle with unable adjustment base 203 and be connected, temperature probe 3 installs inside protective case 4, protective case 4 is hollow out construction, temperature probe 3 is provided with the platinum resistance wire of surveying temperature. Referring to fig. 1, a through hole is formed in the pipe 1, and the fixing ring sleeve 5 is fixedly welded to the through hole on the outer wall of the pipe 1 and aligned with the through hole.
Referring to fig. 1 and 2, the fixing member 2 is used for fixing the platinum thermistor-based temperature sensing device on the pipeline 1, the fixing member 2 mainly comprises a connecting cover 201 and a fixing base 203, wherein the connecting cover 201 is used for being detachably connected with the fixing ring sleeve 5 to fix the platinum thermistor-based temperature sensing device on the pipeline 1, the fixing base 203 is fixedly installed at the bottom center position of the connecting cover 201 to facilitate connection of the temperature probe 3 and the protection sleeve 4, and the temperature probe 3 and the protection sleeve 4 are both installed on the fixing base 203 in a detachable connection manner (such as clamping fit, threaded connection and the like). The temperature probe 3 is provided with a platinum resistance wire for detecting temperature, the platinum resistance wire can show different resistance values according to environmental stability, the reaction is sensitive, and the measurement is accurate. Protective case 4 is hollow out construction, has more hole, and temperature probe 3 is located protective case 4 insidely.
When the temperature probe is installed, the temperature probe 3 and the protective sleeve 4 are fixed on the fixed base 203, then the temperature probe 3 extends into the pipeline 1 through the through hole, and the connecting cover 201 is connected with the fixed ring sleeve 5 to complete installation. Protective case 4 can play and alleviate impact or erode during the use, avoids temperature probe 3 excessive wear, and inside the fluid can get into protective case 4 from the hole, does not influence temperature probe 3 and normally surveys the fluid temperature, consequently has the beneficial effect that the protecting effect is good, long service life.
In some embodiments of the present invention, a sealing ring 202 is disposed in the connecting cover 201, and the sealing ring 202 abuts against the top end of the fixing ring sleeve 5. As shown in fig. 2, a sealing ring 202 is provided to enhance the sealing effect and prevent fluid from leaking. The connecting cap 201 is similar to the conventional bottle cap and comprises a horizontal disc and a sleeve fixed below the disc, and a sealing ring 202 is mounted at the bottom of the disc. Through the technical scheme of this embodiment, connect lid 201 and fixed ring cover 5 and connect the back, the outer wall of fixed ring cover 5 is lived in the sleeve cover of connecting lid 201, and the bottom surface of the disc of connecting lid 201 and the top terminal surface extrusion sealing washer 202 of fixed ring cover 5 realize better sealed effect, avoid the fluid exosmosis.
Further, as shown in fig. 2, the sealing ring 202 may be made of rubber (such as fluororubber, nitrile rubber, silicone rubber, ethylene propylene rubber, viton rubber, etc.) to form the rubber sealing ring 202. Through the technical scheme of this embodiment, rubber seal 202 has better elasticity, and the technology is mature, and sealed effect is better.
In some embodiments of the present invention, a data transmission element 6 is disposed on the top of the connecting cover 201, and the data transmission element 6 is electrically connected to the temperature probe 3. Referring to fig. 2, the data transmission element 6 is fixedly installed on the top outside the connection cover 201, the data transmission element 6 may be a wired data transmission element 6 (e.g. a data line) or a wireless data transmission element 6 (e.g. a bluetooth module or a WiFi module), and the temperature probe 3 and the data transmission element 6 are electrically connected through a wire 602. Through the technical scheme of this embodiment, temperature probe 3 transmits the temperature data who gathers for data transmission component 6 through wire 602, and data transmission component 6 transmits temperature data for data processing terminal again, makes things convenient for the supervisory personnel to look over, masters the fluidic temperature data in pipeline 1 at any time, guarantees pipeline 1 transportation safety.
In some embodiments of the present invention, the data transmission element 6 includes a wireless rf module 601, the wireless rf module 601 is connected to a conducting wire 602, and the conducting wire 602 is electrically connected to the temperature probe 3. As shown in fig. 2, the data transmission element 6 may select a prior art radio frequency module 601, and may transmit the temperature data in the form of bluetooth, wiFi or GPRS. The wireless radio frequency module 601 is connected with a lead 602, and the other end of the lead 602 is connected with the temperature probe 3. Through the technical scheme of this embodiment, temperature probe 3 transmits the temperature data who gathers to wireless radio frequency module 601 through wire 602, and wireless radio frequency module 601 transmits temperature data to data processing terminal with wireless mode again, reduces the circuit and erects, and it is more convenient to use.
In some embodiments of the present invention, a spring 603 abutting the temperature probe 3 is connected to an end of the wire 602. As shown in fig. 2, a spring 603 is connected to one end of the wire 602 away from the radio frequency module 601, an upper end of the spring 603 is fixedly connected to the fixing base 203, and a lower end of the spring 603 abuts against the temperature probe 3. Through the technical scheme of this embodiment, when temperature probe 3 was installed on unable adjustment base 203, temperature probe 3's top and spring 603 butt, spring 603 is in compression state, ensures that spring 603 and temperature probe 3 butt are firm, realizes stable connection of electric lines.
In some embodiments of the present invention, the connection cover 201 is provided with an internal thread, the fixing ring 5 is provided with an external thread matching the internal thread of the connection cover 201, the fixing base 203 is provided with an external thread, and the protection sleeve 4 is provided with an internal thread matching the external thread of the fixing base 203. Referring to fig. 2, the connection cover 201 and the fixed ring sleeve 5 may be connected by a thread, the inner wall of the sleeve of the connection cover 201 is provided with an internal thread, the outer wall of the fixed ring sleeve 5 is provided with an external thread, and the external thread is connected with the internal thread in a matching manner. Threaded connection can also be selected to unable adjustment base 203 and protective case 4, and unable adjustment base 203's outer wall is equipped with the external screw thread, and protective case 4's inner wall is equipped with the internal thread, and internal thread and external screw thread fit are connected. Through the technical scheme of this embodiment, threaded connection is a widely used detachable fixed connection for connecting cover 201 and fixed ring cover 5, unable adjustment base 203 and protective case 4 have simple structure, connect advantages such as reliable, install and remove the convenience.
In some embodiments of the present invention, the side wall of the connecting cover 201 is symmetrically provided with the screwing handle 7. Referring to fig. 2, the screwing handle 7 is a straight rod and horizontally mounted on the outer side wall of the connecting cover 201, and the two screwing handles 7 are symmetrically distributed. Through the technical scheme of this embodiment, when needing installation or dismantlement to connect lid 201, hold with the hand and twist handle 7 handle, swivelling joint lid 201 is lighter, and it is more convenient to use.
In some embodiments of the present invention, a groove is formed in the center of the bottom of the fixing base 203, and the temperature probe 3 is screwed into the groove. Referring to fig. 2, the groove is formed in the center of the bottom of the fixing base 203, an internal thread is formed on the wall of the groove, and an external thread is formed on the top of the temperature probe 3, so that the temperature probe 3 is in threaded connection with the groove. Through the technical scheme of this embodiment for temperature probe 3 installation is dismantled comparatively conveniently, is convenient for change or maintain.
In some embodiments of the invention, the surface of the protective sleeve 4 is provided with a protective layer. Referring to fig. 1 and 2, the protective layer may be made of rust-proof paint, and is coated on the surface of the protective sleeve 4. Through the technical scheme of this embodiment, the protective layer plays better isolation, slows down the oxidation that protective case 4 received, prolongs protective case 4's life.
In summary, the embodiment of the present invention provides a temperature sensing device based on a platinum thermistor, which is used for measuring the temperature of a fluid in a pipeline 1, and includes a fixing element 2, a temperature probe 3 and a protective sleeve 4, the fixing element 2 includes a connecting cover 201 and a fixing base 203, the pipeline 1 is provided with a fixing ring sleeve 5, the connecting cover 201 is detachably connected with the fixing ring sleeve 5, the fixing base 203 is installed at the bottom inside the connecting cover 201, both the temperature probe 3 and the protective sleeve 4 are detachably connected with the fixing base 203, the temperature probe 3 is installed inside the protective sleeve 4, the protective sleeve 4 is a hollow structure, and the temperature probe 3 is provided with a platinum thermistor for detecting temperature.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a temperature sensing device based on platinum resistance for the fluidic temperature of measurement pipeline, a serial communication port, including mounting, temperature probe and protective case, the mounting is including connecting lid and unable adjustment base, and the pipeline is provided with solid fixed ring cover, connect the lid with gu the fixed ring cover can dismantle the connection, unable adjustment base install in bottom in the connection lid, temperature probe with protective case all with unable adjustment base can dismantle the connection, temperature probe install in inside protective case, protective case is hollow out construction, temperature probe is provided with the platinum resistance wire of surveying the temperature, it is equipped with the internal thread to connect the lid, gu fixed ring cover be equipped with connect the interior screw-thread fit's that the lid was established external screw thread, unable adjustment base is equipped with the external screw thread, protective case be equipped with gu the external screw-thread fit's internal thread, it is provided with the handle of twisting to connect the lateral wall symmetry that covers outward.
2. The platinum thermistor according to claim 1, characterized in that a sealing ring is arranged in the connecting cover, and abuts against the top end of the fixing ring sleeve.
3. The platinum thermistor-based temperature sensing device according to claim 2, characterized in that the sealing ring comprises a rubber sealing ring.
4. The platinum thermistor-based temperature sensing device according to claim 1, characterized in that a data transmission element is arranged on the top outside the connection cover, and the data transmission element is electrically connected with the temperature probe.
5. The platinum thermistor-based temperature sensing device according to claim 4, characterized in that the data transmission element comprises a wireless radio frequency module, the wireless radio frequency module is connected with a lead, and the lead is electrically connected with the temperature probe.
6. The platinum thermistor based temperature sensing device according to claim 5, characterized in that a spring abutting against the temperature probe is connected to the end of the conducting wire.
7. The platinum thermistor-based temperature sensing device according to claim 1, characterized in that a groove is provided in the center of the bottom of the fixing base, and the temperature probe is screwed into the groove.
8. The platinum thermistor-based temperature sensing device according to claim 1, characterized in that the surface of the protective sleeve is provided with a protective layer.
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CN202111433693.XA CN114136477B (en) | 2021-11-29 | 2021-11-29 | Temperature sensing device based on platinum thermal resistor |
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CN114136477B true CN114136477B (en) | 2023-02-24 |
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US11067520B2 (en) * | 2016-06-29 | 2021-07-20 | Rosemount Inc. | Process fluid temperature measurement system with improved process intrusion |
CN107014513B (en) * | 2017-04-14 | 2020-03-31 | 东南大学 | Sleeve type platinum resistor temperature sensing device |
US11073429B2 (en) * | 2018-09-24 | 2021-07-27 | Rosemount Inc. | Non-invasive process fluid temperature indication for high temperature applications |
CN209485550U (en) * | 2019-04-11 | 2019-10-11 | 西安培华学院 | A kind of protection sleeve pipe of temperature sensor |
CN209961346U (en) * | 2019-06-18 | 2020-01-17 | 胜利油田豪威科工贸有限责任公司 | Pipe wall type temperature transmitter |
CN110954232A (en) * | 2019-12-09 | 2020-04-03 | 西安西派测控技术有限公司 | Sealing device of thermocouple |
CN212055823U (en) * | 2020-05-11 | 2020-12-01 | 西南石油大学 | Pipeline temperature measuring device |
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