Novel temperature and pressure integrated sensor device

Abstract

The utility model relates to a novel temperature and pressure integrated sensor device, which comprises a pressure inlet, a thermosensitive platinum resistor body, a thermosensitive platinum resistor sintering, a second cavity and a high-sensitivity pressure core body, the second cavity is arranged in the pressure inlet, the high-sensitivity pressure core body is arranged in the second cavity, and the thermosensitive platinum resistor sintering is arranged in the high-sensitivity pressure core body. A second cavity is formed in the pressure inlet, a first cavity is formed in the pressure inlet in one side of the second cavity, the thermosensitive platinum resistor body is arranged in the first cavity, the thermosensitive platinum resistor is arranged outside the thermosensitive platinum resistor body in a sintering mode, a stainless steel shell is arranged below the pressure inlet, and a base is arranged below the stainless steel shell; and a first glass insulator and a second glass insulator are respectively arranged in the stainless steel shell. According to the utility model, temperature and pressure can be measured at the same time, the precision is high, the stability is high, the work is reliable, and the installation and use are convenient and simple.

Description

Technical Field

[0001] The utility model relates to the technical field of aviation engines, in particular to a novel temperature and pressure integrated sensor device. Background Art

[0002] The effective operation of the fuel system during the operation of an aircraft engine plays a vital role in its stable operation. In order to ensure that the engine continues to output stable power and speed, the fuel system needs to provide fuel with stable pressure. At this time, the aviation kerosene in the fuel main pipe must be continuously monitored for pressure. In order to ensure the safety of the fuel system, the temperature of the fuel system also needs to be monitored.

[0003] The conventional method is to install a pressure sensor and a temperature sensor in the fuel line to monitor the pressure and temperature of the fuel. However, the design and installation of the two sensors are large and heavy, which will occupy more engine power and installation space. At the same time, the fuel pressure and temperature values ​​are different due to the different installation positions of the pressure and temperature sensors. In order to increase the effective power of the engine, reduce the installation space and more accurately monitor the fuel pressure and temperature values ​​at key locations, it is necessary to design a temperature and pressure integrated sensor that can monitor pressure and temperature at the same time. Utility Model Content

[0004] The purpose of the utility model is to provide a novel temperature-pressure integrated sensor device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a novel integrated temperature and pressure sensor device, comprising a pressure inlet, a thermistor body, a thermistor sintered, a second cavity and a high-sensitivity pressure core, wherein the second cavity is arranged inside the pressure inlet, the high-sensitivity pressure core is arranged inside the second cavity, a first cavity is arranged inside the pressure inlet on one side of the second cavity, the thermistor body is arranged inside the first cavity, the thermistor sintered is arranged outside the thermistor body, a stainless steel shell is arranged below the pressure inlet, and a base is arranged below the stainless steel shell, and a first glass insulator and a second glass insulator are respectively arranged inside the stainless steel shell.

[0006] The outer surface of the top of the pressure inlet is provided with mounting threads for the installation of the pressure inlet; the pressure inlet and the high-sensitivity pressure core are sealed by laser welding, which improves the stability of the device structure; the pressure inlet and the second glass insulator are sealed by laser welding, which improves the stability of the device structure.

[0007] As a further improvement of the present invention, the stainless steel housing, the base, the first glass insulator and the second glass insulator are an integral sintered structure.

[0008] As a further improvement of the utility model, the stainless steel shell, the base, the first glass insulator and the second glass insulator are packaged and welded inside the pressure inlet.

[0009] As a further improvement of the utility model, an open groove is provided on the surface of the stainless steel shell, and the high-sensitivity pressure core adopts a high-performance silicon piezoresistive pressure chip. A crescent fixing block is fixed inside the open groove, and the high-sensitivity pressure core adopts a high-performance silicon piezoresistive pressure chip. A threaded strip is provided on the inner surface of the crescent fixing block, and the high-sensitivity pressure core adopts a high-performance silicon piezoresistive pressure chip. A fixing screw is provided inside the crescent fixing block, and the high-sensitivity pressure core adopts a high-performance silicon piezoresistive pressure chip. A threaded groove is provided on the outer surface of the fixing screw, and the threaded groove is engaged with the threaded strip to facilitate the installation of the device.

[0010] As a further improvement of the utility model, the high-sensitivity pressure core adopts a high-performance silicon piezoresistive pressure chip to achieve reliable measurement.

[0011] According to the above description of the technical solution, compared with the prior art, the technical features and beneficial technical effects of the technical solution include the following: the technical solution not only realizes the simultaneous measurement of temperature and pressure, but also has high accuracy, high stability, reliable operation, and convenient and concise installation and use;

[0012] This technical solution consists of a pressure inlet, a high-sensitivity pressure core, a thermistor body, and a sintered thermistor. The core of the high-sensitivity pressure core is a high-sensitivity core. It adopts a high-performance silicon piezoresistive pressure chip. By laser welding and sealing, while isolating the measured medium from the chip, the pressure signal can be transmitted in real time to the chip and circuit inside the new temperature-pressure integrated sensor device to achieve reliable measurement.

[0013] The sintered thermistor of this technical solution is also sealed with the pressure inlet by laser welding. The fuel enters the pressure inlet and contacts the pressure-sensitive diaphragm of the high-sensitivity pressure core. The pressure-sensitive diaphragm transmits the fuel pressure to the pressure-sensitive chip inside the high-sensitivity pressure core. The pressure-sensitive chip generates a voltage signal. As the fuel continues to work, the fuel enters the pressure inlet and transmits the temperature to the thermistor body inside the pressure inlet. The thermistor body senses the temperature change and the resistance value changes. The electrical signal changes generated by the pressure and temperature changes are processed by the back-end circuit and finally transmitted to the instrument, realizing the simultaneous measurement of temperature and pressure. This technical solution is a simple and compact all-stainless steel structure composed of welded parts. It has the characteristics of high precision, high stability, reliable operation, easy and simple installation and use, and can work stably and reliably under relatively harsh conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view cross-sectional structural schematic diagram of the utility model.

[0015] Figure 2 For the utility model Figure 1 Enlarged structural diagram at A in the middle.

[0016] Figure 3 It is a side cross-sectional structural schematic diagram of the utility model.

[0017] Figure 4 For the utility model Figure 3 Enlarged structural diagram at B in the middle.

[0018] Figure 5 It is a front view schematic diagram of the appearance structure of the utility model.

[0019] In the figure: 1. pressure inlet; 2. first cavity; 3. thermistor body; 4. sintered thermistor; 5. stainless steel shell; 6. base; 7. second cavity; 8. high-sensitivity pressure core; 9. first glass insulator; 10. second glass insulator; 11. open slot; 12. crescent fixing block; 13. threaded strip; 14. fixing screw; 15. threaded slot; 16. mounting thread. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. All other embodiments obtained by ordinary technicians in the field without creative work based on the embodiments of the utility model shall fall within the scope of protection of the utility model.

[0021] See also Figure 1-5The utility model provides an embodiment: a novel integrated temperature and pressure sensor device, comprising a pressure inlet 1, a thermistor body 3, a thermistor sintered 4, a second cavity 7 and a high-sensitivity pressure core 8, wherein the second cavity 7 is arranged inside the pressure inlet 1, and the high-sensitivity pressure core 8 is arranged inside the second cavity 7, a first cavity 2 is arranged inside the pressure inlet 1 on one side of the second cavity 7, the thermistor body 3 is arranged inside the first cavity 2, the thermistor sintered 4 is arranged outside the thermistor body 3, a stainless steel shell 5 is arranged below the pressure inlet 1, and a base 6 is arranged below the stainless steel shell 5, and a first glass insulator 9 and a second glass insulator 10 are respectively arranged inside the stainless steel shell 5.

[0022] The outer surface of the top of the pressure inlet 1 is provided with mounting threads 16 for the installation of the pressure inlet 1; the pressure inlet 1 and the high-sensitivity pressure core 8 are sealed by laser welding, which improves the stability of the device structure; the pressure inlet 1 and the second glass insulator 10 are sealed by laser welding, which improves the stability of the device structure.

[0023] The stainless steel shell 5, the base 6, the first glass insulator 9 and the second glass insulator 10 are an integral sintered structure; the stainless steel shell 5, the base 6, the first glass insulator 9 and the second glass insulator 10 are packaged and welded inside the pressure inlet 1; an open groove 11 is provided on the surface of the stainless steel shell 5, and a crescent fixing block 12 is fixed inside the open groove 11, and a threaded bar 13 is provided on the inner surface of the crescent fixing block 12, a fixing screw 14 is provided inside the crescent fixing block 12, and a threaded groove 15 is provided on the outer surface of the fixing screw 14, and the threaded groove 15 is meshed with the threaded bar 13, so as to facilitate the installation of the device; the high-sensitivity pressure core 8 adopts a high-performance silicon piezoresistive pressure chip to achieve reliable measurement.

[0024] When the device is specifically needed, the technical solution consists of a pressure inlet 1, a high-sensitivity pressure core 8, a thermistor body 3, and a sintered thermistor 4. The high-sensitivity pressure core 8 is welded and sealed to the pressure inlet 1 to sense the fuel pressure. Its pressure-sensitive diaphragm is away from the metal contact surface, which protects it to a certain extent. The thermistor body 3, the stainless steel shell 5, the base 6, the first glass insulator 9, and the second glass insulator 10 are sintered as a whole and then packaged and welded inside the pressure inlet 1 of the technical solution. In this way, while the pressure inlet 1 end senses the pressure, the temperature of the measured medium is transmitted to the thermistor body 3 inside the pressure inlet 1, thereby realizing the simultaneous measurement of temperature and pressure.

[0025] The core of the high-sensitivity pressure core 8 is a high-sensitivity core, which adopts a high-performance silicon piezoresistive pressure chip. By laser welding and sealing, while isolating the measured medium from the chip, the pressure signal can be transmitted to the chip and circuit inside the new temperature-pressure integrated sensor device in real time to achieve reliable measurement. The pressure inlet 1 is sealed with the high-sensitivity pressure core 8 by laser welding, and the thermistor platinum resistor sintering 4 is also sealed with the pressure inlet 1 by laser welding to improve the stability of the product structure. The fuel enters the pressure inlet 1 and contacts the pressure-sensitive diaphragm of the high-sensitivity pressure core 8. The pressure-sensitive diaphragm transmits the fuel pressure to the pressure-sensitive chip inside the high-sensitivity pressure core 8, and the pressure-sensitive chip is generated. The voltage signal is formed, and the sintered thermistor body 3 is also sealed by laser welding. As the fuel continues to work, the fuel enters the pressure inlet 1 and transmits the temperature to the thermistor body 3 inside the pressure inlet 1. The thermistor body 3 senses the temperature change and the resistance value changes. The electrical signal changes generated by the pressure and temperature changes are processed by the back-end circuit and finally transmitted to the instrument, realizing the simultaneous measurement of temperature and pressure. The technical solution is a simple and compact all-stainless steel structure composed of welded parts, with the characteristics of high precision, high stability, reliable operation, convenient and simple installation and use, and can work stably and reliably under relatively harsh conditions.

[0026] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

Claims

1. A novel integrated temperature and pressure sensor device, characterized in that: The invention comprises a pressure inlet (1), a thermistor platinum resistor body (3), a thermistor platinum resistor sinter (4), a second cavity (7) and a high-sensitivity pressure core (8), wherein the second cavity (7) is arranged inside the pressure inlet (1), the high-sensitivity pressure core (8) is arranged inside the second cavity (7), a first cavity (2) is arranged inside the pressure inlet (1) on one side of the second cavity (7), the thermistor platinum resistor body (3) is arranged inside the first cavity (2), and the thermistor platinum resistor sinter (4) is arranged outside the thermistor platinum resistor body (3). A stainless steel shell (5) is arranged below the pressure inlet (1), and a base (6) is arranged below the stainless steel shell (5); a first glass insulator (9) and a second glass insulator (10) are arranged inside the stainless steel shell (5); mounting threads (16) are arranged on the outer surface of the top of the pressure inlet (1); the pressure inlet (1) and the high-sensitivity pressure core (8) are sealed by laser welding; the pressure inlet (1) and the second glass insulator (10) are sealed by laser welding.

2. A novel integrated temperature and pressure sensor device according to claim 1, characterized in that: The stainless steel housing (5), the base (6), the first glass insulator (9), and the second glass insulator (10) are an integral sintered structure.

3. The novel integrated temperature and pressure sensor device according to claim 1 is characterized in that: The stainless steel housing (5), the base (6), the first glass insulator (9), and the second glass insulator (10) are packaged and welded inside the pressure inlet (1).

4. The novel integrated temperature and pressure sensor device according to claim 1 is characterized in that: The surface of the stainless steel shell (5) is provided with an open groove (11), and a crescent fixing block (12) is fixed inside the open groove (11), and a threaded strip (13) is provided on the inner surface of the crescent fixing block (12), and a fixing screw (14) is provided inside the crescent fixing block (12), and a threaded groove (15) is provided on the outer surface of the fixing screw (14), and the threaded groove (15) is meshed with the threaded strip (13).

5. The novel integrated temperature and pressure sensor device according to claim 1 is characterized in that: The high-sensitivity pressure core (8) adopts a high-performance silicon piezoresistive pressure chip.

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