CN115356113B - Device for measuring outlet temperature and pressure of air compressor in engine - Google Patents
Device for measuring outlet temperature and pressure of air compressor in engine Download PDFInfo
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- CN115356113B CN115356113B CN202211071254.3A CN202211071254A CN115356113B CN 115356113 B CN115356113 B CN 115356113B CN 202211071254 A CN202211071254 A CN 202211071254A CN 115356113 B CN115356113 B CN 115356113B
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- 238000001514 detection method Methods 0.000 claims abstract description 47
- 238000000034 method Methods 0.000 claims abstract description 7
- 230000008569 process Effects 0.000 claims abstract description 7
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 26
- 230000008054 signal transmission Effects 0.000 claims description 23
- 239000012530 fluid Substances 0.000 claims description 21
- 229910052697 platinum Inorganic materials 0.000 claims description 12
- 230000001939 inductive effect Effects 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000000523 sample Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- 239000011810 insulating material Substances 0.000 claims description 2
- 239000000741 silica gel Substances 0.000 claims description 2
- 229910002027 silica gel Inorganic materials 0.000 claims description 2
- 238000001816 cooling Methods 0.000 abstract description 5
- 239000000446 fuel Substances 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 230000008859 change Effects 0.000 description 6
- 238000009530 blood pressure measurement Methods 0.000 description 3
- 238000009529 body temperature measurement Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention discloses a temperature and pressure measuring device for an outlet of a compressor in an aircraft engine, which comprises a cylindrical shell with two open ends, a sensor mounting seat, a bolt limiting disc fixedly sleeved at the upper end of the outer wall of the cylindrical shell, a plurality of bolt fastening components and a detection rod fixedly sleeved in the cylindrical shell at the middle. The invention can measure the temperature and the total pressure at the outlet section of the compressor of the engine by adopting one sensor, and can reduce the turbulence of the sensor on the pneumatic flow field of the engine and the blockage of the sensor on the flow passage of the engine by adopting the least sensor for measuring the temperature and the pressure of the engine for each section of the engine. The invention can realize the replacement of the temperature sensor at the outlet of the compressor of the engine under the condition of no cooling and stopping in the running process of the engine, avoid unnecessary starting process, save the cooling and stopping time of the engine and the restarting and heating time of the engine, and reduce the fuel consumption cost caused by the running of the engine.
Description
Technical Field
The invention belongs to the technical field of detection of flow fields of engines, relates to a temperature and pressure measuring device, and in particular relates to a temperature and pressure measuring device for an outlet of a compressor in an engine, which is applied to measurement of the temperature and the pressure of the outlet section of the compressor in the whole engine state, can also be applied to test and test of the compressor and turbine parts, and is particularly suitable for flow field measurement with large flow resistance and turbulent flow in the test of the engine or parts.
Background
In the prior art, before the admission performance of the aircraft engine is tested, a plug on an engine case needs to be disassembled, and then a temperature sensor (namely a thermocouple for installing the outlet temperature of the air compressor) and a total pressure sensor (or a called sensing part) are installed, so that the purpose of measuring the temperature and the total pressure after the air compressor to calculate the engine performance is achieved when the aircraft engine is started. After the performance of the engine is recorded, the engine is stopped, the temperature sensor and the pressure sensor are removed, then the box plug is installed again, and after the engine is restarted and heated, the subsequent test run content is completed. Such operation not only results in long operating times for the temperature sensor, but also increases engine run time in addition to recording performance. While in the engine operating state, the temperature of the case housing 300 is very high, and the operator cannot remove the temperature sensor from the engine. In addition, the service life and the service life of the corresponding measuring sensor are limited, and the service time of the measuring sensor is reduced as much as possible in the engine test, so that the loss of the sensor can be reduced. Therefore, it is highly desirable to invent a sensor special for measuring the temperature and pressure of the outlet of the compressor of the engine, which can be quickly installed on a high-temperature engine only when the engine is in recording performance, and the engine is not stopped after the engine is in recording performance, and then is detached. Therefore, the technical problem that the sensor cannot be detached in a high-temperature environment when the engine is tested can be solved.
Disclosure of Invention
(One) technical problem to be solved by the invention
In order to overcome the defects and shortcomings of the prior art, the invention aims to provide a device for measuring the temperature and the pressure of an outlet of a compressor in an engine, which can be used for measuring the temperature and the total pressure at the section of the outlet of the compressor of the engine by one measuring device, so that the blocking effect of a sensor on the section of the engine is reduced. In addition, the invention can complete the replacement of the plug and the temperature sensor at the outlet of the air compressor under the condition of no stopping and cooling in the test run of the engine, thereby avoiding the increase of the redundant running time of the engine. The engine starting times are reduced, the service time of the sensor is shortened on a single engine, and the service life of the sensor is prolonged.
(II) the technical proposal adopted by the invention for solving the technical problems
The device for measuring the outlet temperature and the pressure of the gas compressor in the engine comprises a cylindrical shell with two open ends, a sensor mounting seat fixedly sleeved at the lower end of the outer wall of the cylindrical shell, a bolt limiting disc fixedly sleeved at the upper end of the outer wall of the cylindrical shell, a plurality of bolt fastening components and a detection rod fixedly sleeved at the middle part of the detection rod in the cylindrical shell,
The sensor mounting seat is fixedly sleeved on the outer wall of the cylindrical shell in a manner that fluid is not leaked between the sensor mounting seat and the outer wall of the cylindrical shell in a high-temperature high-pressure fluid environment;
A plurality of bolt mounting holes are formed in the sensor mounting seat and the bolt limiting disc, and the bolt mounting holes in the sensor mounting seat are in one-to-one correspondence in the up-down direction;
Each bolt fastening assembly comprises a bolt and a nut matched with the bolt, the end of each bolt sequentially passes through the corresponding bolt mounting hole on the bolt limiting disc and the corresponding sensor mounting seat and then is fixedly connected with a threaded hole on a sensor fixing seat on a casing shell at the exhaust port of the air compressor in the engine, and after all the bolts are mounted, the sensor mounting seat is fixedly mounted on the sensor fixing seat on the casing shell at the exhaust port of the air compressor;
After each bolt passes through the corresponding bolt mounting hole on the bolt limiting disc, a nut matched with the bolt is mounted on the bolt, when the temperature and pressure measuring device is required to be mounted, the bolt continuously passes through the corresponding bolt mounting hole on the sensor mounting seat, then the end part of the bolt is fixedly connected with a threaded hole on a sensor fixing seat on a casing shell at the exhaust port of a compressor in the engine, and the mounting mode of the nut is used for preventing the bolt from falling into the thermal environment of the engine in the mounting process;
The outer wall of the middle part of the detection rod is fixedly arranged on the inner wall of the cylindrical shell in a penetrating manner in a manner that fluid is not leaked in a high-temperature high-pressure fluid environment;
The detecting rod is a hollow rod-shaped body with an opening at the top end and a closed bottom end, a plurality of tubular detecting heads distributed along the height direction are arranged on the surface of the rod body of the detecting rod below the cylindrical shell, each tubular detecting head extends along the horizontal direction, and the opening at the head and the tail of each tubular detecting head are communicated with the hollow cavity of the detecting rod;
A plurality of total pressure air-inducing pipes and a plurality of temperature-sensing elements are arranged in the hollow cavity of the detection rod, wherein each total pressure air-inducing pipe corresponds to one tubular detection head, each total pressure air-inducing pipe is connected with the tail part of the corresponding tubular detection head in a fluid-leakage-free manner, and the corresponding tubular detection head is formed into a total pressure sensing part; each temperature sensing element comprises a temperature sensing part and a signal transmission cable connected with the temperature sensing part, each temperature sensing part is correspondingly and fixedly arranged in one tubular detection head, the main body part of the signal transmission cable is arranged in the hollow cavity of the detection rod, the temperature sensing part is used for detecting the temperature of high-temperature fluid entering the tubular detection head, and the signal transmission cable is used for transmitting a temperature signal to external temperature measuring equipment.
Preferably, the cylindrical shell, the sensor mounting seat and the bolt limiting disc are integrally formed, and the inner groove of the cylindrical shell is formed into a cylindrical structure with two open ends.
Preferably, the outer wall in the middle of the detecting rod is fixedly connected with the inner wall of the cylindrical shell in a welding mode, and a sealing structure which does not leak fluid in a high-temperature high-pressure fluid environment is formed between the outer wall and the inner wall.
Preferably, in the hollow cavity of the detection rod, in order to obtain good insulation, a high-temperature insulation material is filled between the signal transmission cable of each temperature sensing element and the total pressure air-entraining pipe.
Preferably, the signal transmission cables of the total pressure induced air pipe and the temperature sensing element are fixedly arranged in the hollow cavity of the detection rod in a high temperature resistant silica gel blocking mode.
Preferably, the temperature sensing parts are platinum resistance sensing parts, each platinum resistance sensing part comprises two signal transmission cables, and the two signal transmission cables are bundled into a wire harness and fixed in the hollow cavity of the detection rod. The temperature sensing portion utilizes the characteristic that the resistance value of platinum metal changes with the change of temperature and is approximately proportional. The platinum resistor with the graduation number of Pt100 is used as the temperature sensing element, when the ambient temperature changes, the temperature sensing element senses the temperature change and generates resistance value change, and the temperature of the environment where the sensor temperature sensing element is located can be determined by detecting the resistance value of the platinum resistor. Under normal conditions, the insulation resistance between each wire and the housing, and between 2 wires of each set of platinum resistors, is not less than 100mΩ measured with a 100DC megohmmeter.
Preferably, the detecting rod is located on the rod body portion above the cylindrical shell, and a bracket for fixing the signal transmission cable and the total pressure induced air pipe is further arranged on the top of the detecting rod.
The invention relates to a device for measuring the outlet temperature and pressure of a gas compressor in an engine, which comprises the following working principles:
In the engine recording performance stage, the engine is normally driven to run, in a low working condition state before the recording performance, a screw fixed on a plug at a sensor fixing seat of a casing of an engine compressor is unscrewed by a tool, a plug is disassembled, a detection rod of a compressor outlet temperature and pressure measuring device in the engine extends into an engine compressor circulation channel, a sensed part faces to an air inlet direction, a sensor base is connected with the sensor fixing seat on the wall surface of the casing, after the position is adjusted, the sensor base is fastened on the engine sensor fixing seat by the tool through screwing a screw on a compressor outlet bolt limiting disc, and a matched cable is connected to a data acquisition system corresponding to an engine test bed. The total pressure sensing part is connected to the pressure sensor of the test run correspondingly. The engine speed is improved, and the performance of each working condition point of the engine is recorded. After the recording performance is finished, the engine is reduced to the lowest working condition, the temperature and pressure measuring device is detached by using the tool according to the reverse working condition, the plug on the engine sensor fixing seat is reinstalled, and then the subsequent test run content can be completed.
(III) technical effects and advantages achieved by the invention
The temperature and pressure measuring device for the gas compressor outlet in the engine can measure the temperature and the total pressure at the section of the gas compressor outlet of the engine by adopting one sensor, and can reduce the turbulence of the sensor on the pneumatic flow field of the engine and the blockage of the sensor on the flow passage of the engine by adopting the least sensor for measuring the temperature and the pressure of the engine for each section of the engine. The invention can realize the replacement of the temperature sensor at the outlet of the compressor of the engine under the condition of no cooling and stopping in the running process of the engine, avoid unnecessary starting process, save the cooling and stopping time of the engine and the restarting and heating time of the engine, and reduce the fuel consumption cost caused by the running of the engine.
Drawings
FIG. 1 is a front view of a compressor outlet temperature and pressure measurement device in an engine according to the present invention;
FIG. 2 is a side view of the temperature and pressure measurement device of the present invention;
FIG. 3 is a cross-sectional view of a temperature and pressure measurement device of the present invention;
FIG. 4 is an enlarged partial schematic view of a probe rod according to the present invention. .
Reference numerals illustrate:
The device comprises a cylindrical shell 1, a sensor mounting seat 2, a bolt limiting disc 3, a bolt fastening assembly 4, a detection rod 5, a tubular detection head 51, a total pressure air-entraining pipe 52, a signal transmission cable 53, a temperature sensing part 54 and a bracket 6.
Detailed Description
For a better understanding of the present invention, its contents are further illustrated below in conjunction with examples so that the advantages and features of the present invention can be more readily understood by those skilled in the art. It should be noted that the following description is only a preferred embodiment of the present invention, but the present invention is not limited to the following embodiment. Indeed, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope or spirit of the invention. For example, features illustrated or described as part of one embodiment can be used with another embodiment to yield still a further embodiment. It is therefore intended that the present invention include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
As shown in fig. 1-4, the device for measuring the outlet temperature and pressure of the gas compressor in the engine comprises a cylindrical shell 1 with two open ends, a sensor mounting seat 2 fixedly sleeved at the lower end of the outer wall of the cylindrical shell 1, a bolt limiting disc 3 fixedly sleeved at the upper end of the outer wall of the cylindrical shell 1, a plurality of bolt fastening components 4 and a detection rod 5 fixedly sleeved in the middle of the cylindrical shell. The cylindrical shell 1, the sensor mounting seat 2 and the bolt limiting disc 3 are integrally formed, and the inner groove of the cylindrical shell is formed into a cylindrical structure with two open ends. The outer wall in the middle of the detecting rod 5 is fixedly connected with the inner wall of the cylindrical shell 1 in a welding mode, and a sealing structure which does not leak fluid in a high-temperature high-pressure fluid environment is formed between the outer wall and the inner wall.
The sensor mounting seat 2 is fixedly sleeved on the outer wall of the cylindrical shell 1 in a manner that fluid is not leaked between the sensor mounting seat and the outer wall of the cylindrical shell 1 in a high-temperature high-pressure fluid environment; a plurality of bolt mounting holes are formed in the sensor mounting seat 2 and the bolt limiting disc 3, and the bolt mounting holes in the sensor mounting seat 2 are in one-to-one correspondence in the up-down direction; each bolt fastening assembly comprises a bolt and a nut matched with the bolt, the end of each bolt sequentially passes through the bolt limiting disc 3 and the corresponding bolt mounting hole on the sensor mounting seat 2 and then is fixedly connected with a threaded hole on a sensor fixing seat on a casing shell at the exhaust port of the compressor in the engine, and after all the bolts are mounted, the sensor mounting seat 2 is fixedly mounted on the sensor fixing seat on the casing shell at the exhaust port of the compressor; and each bolt passes through the corresponding bolt mounting hole on the bolt limiting disc 3, then the nut matched with the bolt is mounted on the bolt, when the temperature and pressure measuring device is required to be mounted, the bolt continuously passes through the corresponding bolt mounting hole on the sensor mounting seat 2, and then the end part of the bolt is fixedly connected with the threaded hole on the sensor fixing seat on the casing shell at the exhaust port of the compressor in the engine, and the mounting mode of the nut is used for preventing the bolt from falling into the thermal environment of the engine in the mounting process.
The outer wall of the middle part of the detection rod 5 is fixedly arranged on the inner wall of the cylindrical shell 1 in a penetrating way in a way that fluid is not leaked between the outer wall and the inner wall of the cylindrical shell 1 in a high-temperature high-pressure fluid environment; the detecting rod 5 is a hollow rod-shaped body with an open top end and a closed bottom end, the detecting rod 5 is positioned on the rod body part above the cylindrical shell 1, and the top of the detecting rod is further provided with a bracket 6 for fixing a signal transmission cable 53 and a total pressure air-entraining pipe 52. The surface of the rod body of the detection rod 5 below the cylindrical shell 1 is provided with a plurality of tubular detection heads 51 distributed along the height direction, each tubular detection head 51 extends along the horizontal direction, and the head opening and the tail of the tubular detection head 51 are communicated with the hollow cavity of the detection rod 5.
A plurality of total pressure air-introducing pipes 52 and a plurality of temperature-sensing elements are arranged in the hollow cavity of the detection rod 5, wherein each total pressure air-introducing pipe 52 corresponds to a tubular detection head 51, each total pressure air-introducing pipe 52 is connected with the tail part of the corresponding tubular detection head 51 in a fluid-leakage-free manner, and the corresponding tubular detection head 51 is formed into a total pressure sensing part; each temperature sensing element comprises a temperature sensing part 54 and a signal transmission cable 53 connected with the temperature sensing part, wherein each temperature sensing part 54 is correspondingly and fixedly arranged in a tubular detection head 51, the main body part of the signal transmission cable 53 is arranged in the hollow cavity of the detection rod 5, the temperature sensing part 54 is used for detecting the temperature of high-temperature fluid entering the tubular detection head 51, and the signal transmission cable 53 is used for transmitting temperature signals to external temperature measuring equipment.
In the hollow cavity of the detection rod 5, in order to obtain good insulation, the space between the signal transmission cable 54 of each temperature sensing element and the total pressure bleed air pipe 53 is filled with a high temperature insulating material. The temperature sensing parts 54 are platinum resistance sensing parts, each platinum resistance sensing part comprises two signal transmission cables 53, and the two signal transmission cables 53 are clustered into a wire harness and fixed in the hollow cavity of the detection rod 5. The temperature sensing portion utilizes the characteristic that the resistance value of platinum metal changes with the change of temperature and is approximately proportional. The platinum resistor with the graduation number of Pt100 is used as the temperature sensing element, when the ambient temperature changes, the temperature sensing element senses the temperature change and generates resistance value change, and the temperature of the environment where the sensor temperature sensing element is located can be determined by detecting the resistance value of the platinum resistor. Under normal conditions, the insulation resistance between each wire and the housing, and between 2 wires of each set of platinum resistors, is not less than 100mΩ measured with a 100DC megohmmeter.
When the device for measuring the outlet temperature and the pressure of the air compressor in the engine is used, the engine is normally driven to run in the recording performance stage, the screw fixed on the plug at the sensor fixing seat of the casing of the air compressor of the engine is unscrewed by a tool in the low working condition state before the recording performance, the plug is disassembled, the detection rod of the device for measuring the outlet temperature and the pressure of the air compressor in the engine extends into the circulation channel of the air compressor of the engine, the detected part faces the air inlet direction, the sensor base is connected with the sensor fixing seat on the wall surface of the casing, and after the position is adjusted, the sensor fixing seat is fastened by the tool through the screw on the bolt limiting disc of the outlet of the air compressor, and the matched cable is connected to a data acquisition system corresponding to the test bed of the engine. The total pressure sensing part is connected to the pressure sensor of the test run correspondingly. The engine speed is improved, and the performance of each working condition point of the engine is recorded. After the recording performance is finished, the engine is reduced to the lowest working condition, the temperature and pressure measuring device is detached by using the tool according to the reverse working condition, the plug on the engine sensor fixing seat is reinstalled, and then the subsequent test run content can be completed.
The object of the present invention is fully effectively achieved by the above-described embodiments. All equivalent or simple changes of the structure, characteristics and principle according to the inventive concept are included in the protection scope of the present invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions in a similar manner without departing from the scope of the invention as defined in the accompanying claims.
The present invention is not described in detail in part as being well known to those skilled in the art.
Claims (7)
1. The device for measuring the outlet temperature and the pressure of the gas compressor in the engine comprises a cylindrical shell with two open ends, a sensor mounting seat fixedly sleeved at the lower end of the outer wall of the cylindrical shell, a bolt limiting disc fixedly sleeved at the upper end of the outer wall of the cylindrical shell, a plurality of bolt fastening components and a detection rod fixedly sleeved at the middle part of the detection rod in the cylindrical shell,
The sensor mounting seat is fixedly sleeved on the outer wall of the cylindrical shell in a manner that fluid is not leaked between the sensor mounting seat and the outer wall of the cylindrical shell in a high-temperature high-pressure fluid environment;
A plurality of bolt mounting holes are formed in the sensor mounting seat and the bolt limiting disc, and the bolt mounting holes in the sensor mounting seat are in one-to-one correspondence in the up-down direction;
Each bolt fastening assembly comprises a bolt and a nut matched with the bolt, the end of each bolt sequentially passes through the corresponding bolt mounting hole on the bolt limiting disc and the corresponding sensor mounting seat and then is fixedly connected with a threaded hole on a sensor fixing seat on a casing shell at the exhaust port of the air compressor in the engine, and after all the bolts are mounted, the sensor mounting seat is fixedly mounted on the sensor fixing seat on the casing shell at the exhaust port of the air compressor;
After each bolt passes through the corresponding bolt mounting hole on the bolt limiting disc, a nut matched with the bolt is mounted on the bolt, when the temperature and pressure measuring device is required to be mounted, the bolt continuously passes through the corresponding bolt mounting hole on the sensor mounting seat, then the end part of the bolt is fixedly connected with a threaded hole on a sensor fixing seat on a casing shell at the exhaust port of a compressor in the engine, and the mounting mode of the nut is used for preventing the bolt from falling into the thermal environment of the engine in the mounting process;
The outer wall of the middle part of the detection rod is fixedly arranged on the inner wall of the cylindrical shell in a penetrating manner in a manner that fluid is not leaked in a high-temperature high-pressure fluid environment;
The detecting rod is a hollow rod-shaped body with an opening at the top end and a closed bottom end, a plurality of tubular detecting heads distributed along the height direction are arranged on the surface of the rod body of the detecting rod below the cylindrical shell, each tubular detecting head extends along the horizontal direction, and the opening at the head and the tail of each tubular detecting head are communicated with the hollow cavity of the detecting rod;
A plurality of total pressure air-inducing pipes and a plurality of temperature-sensing elements are arranged in the hollow cavity of the detection rod, wherein each total pressure air-inducing pipe corresponds to one tubular detection head, each total pressure air-inducing pipe is connected with the tail part of the corresponding tubular detection head in a fluid-leakage-free manner, and the corresponding tubular detection head is formed into a total pressure sensing part; each temperature sensing element comprises a temperature sensing part and a signal transmission cable connected with the temperature sensing part, each temperature sensing part is correspondingly and fixedly arranged in one tubular detection head, the main body part of the signal transmission cable is arranged in the hollow cavity of the detection rod, the temperature sensing part is used for detecting the temperature of high-temperature fluid entering the tubular detection head, and the signal transmission cable is used for transmitting a temperature signal to external temperature measuring equipment.
2. The apparatus of claim 1, wherein the cylindrical housing, the sensor mount, and the bolt retainer are integrally formed, and the inner slot is formed in a cylindrical structure with both ends open.
3. The device for measuring the outlet temperature and the pressure of the gas compressor in the engine according to claim 1, wherein the outer wall of the middle part of the detecting rod is fixedly connected with the inner wall of the cylindrical shell in a welding mode, and a sealing structure which does not leak fluid in a high-temperature high-pressure fluid environment is formed between the outer wall and the inner wall.
4. The device for measuring the outlet temperature and pressure of a compressor in an engine according to claim 1, wherein in the hollow cavity of the detection rod, in order to obtain good insulation, a high-temperature insulating material is filled between the signal transmission cable of each temperature sensing element and the total pressure bleed air pipe.
5. The apparatus of claim 1, wherein the signal transmission cable of each of the total pressure gas-introducing pipe and the temperature-sensing element is fixedly disposed in the hollow cavity of the detection rod by means of high temperature-resistant silica gel plugging.
6. The apparatus of claim 1, wherein the temperature sensing portions are platinum resistance sensing portions, each of the platinum resistance sensing portions includes two signal transmission cables bundled into a bundle and fixed in the hollow cavity of the probe rod.
7. The apparatus of claim 1, wherein the probe rod is disposed on a rod portion above the cylindrical housing, and a bracket for fixing a signal transmission cable and a total pressure gas pipe is further provided on a top portion thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211071254.3A CN115356113B (en) | 2022-09-01 | 2022-09-01 | Device for measuring outlet temperature and pressure of air compressor in engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211071254.3A CN115356113B (en) | 2022-09-01 | 2022-09-01 | Device for measuring outlet temperature and pressure of air compressor in engine |
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| CN115356113A CN115356113A (en) | 2022-11-18 |
| CN115356113B true CN115356113B (en) | 2024-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211071254.3A Active CN115356113B (en) | 2022-09-01 | 2022-09-01 | Device for measuring outlet temperature and pressure of air compressor in engine |
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| CN (1) | CN115356113B (en) |
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| CN115356113A (en) | 2022-11-18 |
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