CN114152362A - High-temperature and high-pressure resistant thermometer - Google Patents
High-temperature and high-pressure resistant thermometer Download PDFInfo
- Publication number
- CN114152362A CN114152362A CN202111401103.5A CN202111401103A CN114152362A CN 114152362 A CN114152362 A CN 114152362A CN 202111401103 A CN202111401103 A CN 202111401103A CN 114152362 A CN114152362 A CN 114152362A
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- China
- Prior art keywords
- temperature
- tube
- adapter plate
- pressure resistant
- thermometer
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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
- G01K7/22—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 non-linear resistance, e.g. thermistor
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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
-
- 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
- G01K1/12—Protective devices, e.g. casings for preventing damage due to heat overloading
-
- 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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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention discloses a high-temperature and high-pressure resistant thermometer, which comprises a tube shell (1) and a circuit adapter plate (2); be equipped with circuit keysets (2) in tube (1), circuit keysets (2) bottom surface is equipped with linear thermistor (3), and lead wire (4) of linear thermistor (3) are worn out from circuit keysets (2) top surface to be connected with high temperature wire (5), whole circuit keysets (2) embedment is in tube (1), and tube (1) top is equipped with apron (6). The invention improves the existing temperature test equipment, only needs to screw the outer pipe thread of the pipe shell on the oil well temperature test port during installation, and does not need to consider the fluctuation range of the oil well temperature test, thereby reducing the installation requirement and debugging cost, improving the cost performance and practicability of the thermometer, and solving the problem of inconvenient field installation and debugging.
Description
Technical Field
The invention relates to a high-temperature and high-pressure resistant thermometer, and belongs to the technical field of temperature testing.
Background
The temperature of the oil well is measured by a digital oil field by a temperature transmitter. The temperature sensing head of temperature transmitter all adopts the temperature sensing head of PT1000 model, and current temperature sensing head structure is complicated, the price is higher, and temperature transmitter is high temperature resistant highly compressed difference debugging is more troublesome in addition, and is inconvenient when field installation uses, need to find out the fluctuation range of oil well temperature before every installation. Once the oil well adopts high-temperature steam pressurization operation, the temperature transmitter can not bear the steam high temperature and can be damaged when being heated continuously at about 200 ℃, so that the temperature can not be tested normally, and the conventional temperature test of the oil field on the oil well is influenced.
Disclosure of Invention
The invention aims to provide a high-temperature and high-pressure resistant thermometer which is simple in structure, resistant to high temperature and high pressure, low in manufacturing cost and convenient to install and use, so that the defects of the prior art are overcome.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention relates to a high-temperature and high-pressure resistant thermometer, which comprises a tube shell and a circuit adapter plate; be equipped with the circuit keysets in the tube, circuit keysets bottom surface is equipped with linear thermistor, and linear thermistor's lead wire is worn out from circuit keysets top surface to be connected with the high temperature wire, whole circuit keysets embedment is in the tube, and the tube top is equipped with the apron.
In the high-temperature and high-pressure resistant thermometer, the bottom of the tube shell is provided with an outer tube thread connected with a temperature test port on an oil well Christmas tree.
In the high-temperature and high-pressure resistant thermometer, a heat insulating material is filled and sealed in a cavity between the top surface of the circuit adapter plate and the cover plate.
In the high-temperature and high-pressure resistant thermometer, the heat conduction material is encapsulated in the cavity between the bottom surface of the circuit adapter plate and the lower port of the tube shell.
In the high-temperature and high-pressure resistant thermometer, the center of the cover plate is provided with a high-temperature lead leading-out hole, and a high-temperature lead is led out from the high-temperature lead leading-out hole; the cover plate is in threaded connection with the top of the pipe shell.
Due to the adoption of the technical scheme, compared with the prior art, the invention improves the prior temperature testing equipment, when in installation, only the outer pipe thread of the pipe shell is screwed on the oil well temperature test port, and the low-cost linear thermistor is adopted, thereby not only effectively reducing the manufacturing cost, and the linear thermistor is skillfully arranged on the bottom surface of the circuit adapter plate and is packaged in the tube shell, the invention can effectively improve the detection precision and the high temperature and high pressure resistance of the whole thermometer, not only can resist high temperature and high pressure through the combination of the ingenious structure and the material, when the thermometer is used, the fluctuation range of oil well temperature test is not required to be considered, the installation requirement and debugging cost are effectively reduced, the cost performance and the practicability of the thermometer are improved, and the problem of inconvenient field installation and debugging is solved.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Description of reference numerals: 1-tube shell, 2-circuit adapter plate, 3-linear thermistor, 4-lead, 5-high temperature lead, 6-cover plate, 7-outer tube thread, 8-heat insulating material, 9-heat conducting material and 10-lead-out hole.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
The invention relates to a high-temperature and high-pressure resistant thermometer, which comprises a tube shell 1 and a circuit adapter plate 2, wherein the tube shell is provided with a first end and a second end; be equipped with circuit keysets 2 in the tube 1, 2 bottom surfaces of circuit keysets are equipped with linear thermistor 3, and linear thermistor 3's lead wire 4 is worn out from 2 top surfaces of circuit keysets to be connected with high temperature wire 5, whole circuit keysets 2 embedments are in tube 1, and 1 top of tube is equipped with apron 6. The bottom of the pipe shell 1 is provided with an outer pipe thread 7 connected with a temperature test port on an oil well Christmas tree. A heat insulating material 8 is encapsulated in a cavity between the top surface of the circuit adapter plate 2 and the cover plate 6; a heat conduction material 9 is encapsulated in a cavity between the bottom surface of the circuit adapter plate 2 and the lower port of the tube shell 1; the heat insulating material 8 and the heat conducting material 9 can both directly adopt the heat insulating material and the heat conducting material commonly used in the prior art, the center of the cover plate 6 is provided with a high-temperature lead leading-out hole 10, and the high-temperature lead 5 is led out from the high-temperature lead leading-out hole 10; and the cover plate 6 is connected with the top of the tube shell 1 through screw threads.
The temperature sensing head of the existing temperature transmitter adopts PT1000, the price of the temperature sensing head is high, in addition, the large difference debugging of the high temperature and high pressure resistance of the temperature transmitter is more troublesome, the temperature transmitter is inconvenient to install and use on site, and the fluctuation range of the temperature of an oil well needs to be found out before each installation. Once the oil well adopts high-temperature steam pressurization operation, the temperature transmitter can not bear the steam high temperature and can be damaged when continuously heating, so that the temperature can not be normally tested, and the conventional temperature test of the oil field on the oil well is influenced.
The present example is an improvement of the existing temperature transmitter, and the specific improved structure is shown in fig. 1, and includes a linear thermistor 3, the linear thermistor 3 has a temperature sensing part and has linearity, and a lead 4 of the linear thermistor 3 penetrates out from the top surface of the circuit adapter plate 2 and is welded on the circuit adapter plate 2; the lead wire 4 of the linear thermistor 3 is welded to the high-temperature wire 5. The linear thermistor 3 then places the circuit adapter board 2 down into the package 1. The inside of the tube shell 1 is in a hollow column shape so as to be convenient for installing the circuit adapter plate 2, the outer tube thread 7 is processed on the bottom end face of the tube shell 1 so as to be convenient for installing the tube shell 1 on a temperature test port of an oil well Christmas tree, and the whole circuit adapter plate 2 is encapsulated in the tube shell 1 together with the linear thermistor 3 and the high-temperature wire 5.
The shell 1 is made of 316 heat-resistant steel material, so that the thermometer is convenient to process and is pressure-resistant, the thermometer in the embodiment is very small, and the shell 1 is provided with the outer pipe thread 7 to carry out on-site quick installation. The thermometer of the embodiment utilizes the linear thermistor 3 to test the temperature, has no exposed sensing head, and well solves the problem of inconvenient installation and debugging in the prior art.
The invention discloses a thermometer manufactured by utilizing the self temperature-sensing linear characteristic of a linear thermistor. The thermometer of the embodiment utilizes the linear thermistor to test the temperature, has no exposed sensing head, well solves the problem of inconvenient installation in the prior art, reduces the installation requirement and cost, and improves the cost performance and the practicability of the thermometer.
Claims (5)
1. A high temperature and high pressure resistant thermometer comprises a tube shell (1) and a circuit adapter plate (2); the method is characterized in that: the circuit adapter plate (2) is arranged in the tube shell (1), the linear thermistor (3) is arranged on the bottom surface of the circuit adapter plate (2), a lead (4) of the linear thermistor (3) penetrates out of the top surface of the circuit adapter plate (2) and is connected with the high-temperature lead (5), the whole circuit adapter plate (2) is encapsulated in the tube shell (1), and a cover plate (6) is arranged at the top of the tube shell (1).
2. The high temperature and pressure resistant thermometer of claim 1 further comprising: and the bottom of the pipe shell (1) is provided with an outer pipe thread (7) connected with a temperature test port on an oil well Christmas tree.
3. The high temperature and pressure resistant thermometer of claim 1 further comprising: and a heat insulating material (8) is encapsulated in a cavity between the top surface of the circuit adapter plate (2) and the cover plate (6).
4. The high temperature and pressure resistant thermometer of claim 1 further comprising: and a heat conduction material (9) is encapsulated in a cavity between the bottom surface of the circuit adapter plate (2) and the lower port of the tube shell (1).
5. The high temperature and pressure resistant thermometer of claim 1 further comprising: a high-temperature lead leading-out hole (10) is formed in the center of the cover plate (6), and a high-temperature lead (5) is led out from the high-temperature lead leading-out hole (10); the cover plate (6) is in threaded connection with the top of the pipe shell (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111401103.5A CN114152362A (en) | 2021-11-19 | 2021-11-19 | High-temperature and high-pressure resistant thermometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111401103.5A CN114152362A (en) | 2021-11-19 | 2021-11-19 | High-temperature and high-pressure resistant thermometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114152362A true CN114152362A (en) | 2022-03-08 |
Family
ID=80457305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111401103.5A Pending CN114152362A (en) | 2021-11-19 | 2021-11-19 | High-temperature and high-pressure resistant thermometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114152362A (en) |
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2021
- 2021-11-19 CN CN202111401103.5A patent/CN114152362A/en active Pending
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