CN211855846U

CN211855846U - Integrated testing device for testing pressure and temperature

Info

Publication number: CN211855846U
Application number: CN202020314740.3U
Authority: CN
Inventors: 韦安建
Original assignee: Shenzhen Judesou Technology Co Ltd
Current assignee: Dongguan judeshou Technology Co.,Ltd.
Priority date: 2020-03-14
Filing date: 2020-03-14
Publication date: 2020-11-03
Anticipated expiration: 2030-03-14

Abstract

The utility model discloses an integral type testing arrangement of test pressure and temperature contains NTC temperature sensing core, heat-conducting glue, encapsulation and glues, NTC connecting block, square seal, ceramic capacitor response core, PCB, FPCB, connector, metal casing and sealing silica gel. The NTC temperature sensing core is arranged at the bottom of the metal shell through heat conducting glue and packaging glue and then is connected with the ceramic capacitance sensing core through an NTC connecting block; the ceramic capacitor induction core seals machine lubricating oil at the front end of the sensor, namely the top of the metal shell, the PCB is welded with pins on the pressure and temperature ceramic capacitor core through welding holes, the FPCB is welded and fixed with the PCB and the connector through welding displacement, and the connector is fixed in the metal shell through riveting; and finally, sealing the metal shell by adopting sealing silica gel. The device is suitable for monitoring the working environment of the diesel engine and various diesel engines, and realizes real-time accurate transmission of pressure and temperature.

Description

Integrated testing device for testing pressure and temperature

Technical Field

The utility model relates to an engine detects technical field, and more specifically the integral type testing arrangement who relates to a test pressure and temperature that says so.

Background

At present, the diesel engine has the advantages of low rotating speed, high torque, low oil consumption, firmness, durability, high and low temperature environment resistance, high humidity environment resistance, drought environment resistance and other severe complex environments, and can stably work for a long time. And the diesel oil is not easy to volatilize and is more resistant to ignition compared with gasoline. The diesel engine is widely applied to power in the industries of transportation, engineering, military, power generation, shipping and the like, and is very widely applied.

Because the use environment of the diesel engine is relatively severe, when the diesel engine works for a long time, all components of the machine, particularly a moving mechanism, have high temperature, need to be lubricated and cooled at any moment, and monitor the pressure and temperature information of the lubricating oil of the machine in real time so as to ensure the normal operation of the machine. And because work for a long time, operational environment is abominable, machine lubricating oil is easily polluted, machine lubricating oil is perishable, consequently has higher requirement to machine lubricating oil, needs to accomplish strict control to machine lubricating oil, and machine lubricating oil possesses the corrosivity again, can cause the influence to the device that machine lubricating oil detected.

Therefore, how to realize long-time work in severe and complex environments and realize stable detection of machine lubricating oil, and the accurate detection performance of corrosion resistance, impact resistance and vibration is a problem that needs to be solved by the technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides an integral type testing arrangement of test pressure and temperature contains NTC temperature sensing core, heat-conducting glue, encapsulation and glues, NTC connecting block, square seal, ceramic capacitance response core, PCB, FPCB, connector, metal casing and sealing silica gel. The NTC temperature sensing core is arranged at the bottom of the metal shell through heat conducting glue and packaging glue and then is connected with the ceramic capacitance sensing core through an NTC connecting block; the ceramic capacitor induction core seals a medium at the front end of the sensor, namely the top of the metal shell, the PCB is welded with pins on the pressure and temperature ceramic capacitor core through welding holes, the FPCB is welded and fixed with the PCB and the connector through welding displacement, and then the connector is fixed in the metal shell through riveting; and finally, sealing the metal shell by adopting sealing silica gel. The integrated measuring device has precise structure and convenient operation, can be applied to the detection of the pressure and the temperature of the lubricating oil of the diesel engine machine, senses the pressure of the lubricating oil of the machine to be 0MPa to 0.8MPa and the temperature to be minus 40 ℃ to 130 ℃, ensures the real-time and accurate transmission of the pressure and the temperature, and is suitable for the monitoring of the working environment of the diesel engine and various diesel engines.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an integrated testing device for testing pressure and temperature comprises an NTC temperature sensing core, an NTC connecting block, a ceramic capacitance sensing core, a PCB, an FPCB, a connector and a metal shell;

the NTC temperature sensing core, the NTC connecting block, the ceramic capacitance sensing core, the PCB, the FPCB and the connector are fixed in the metal shell;

the NTC temperature sensing core is fixed in a bottom hole at the bottom of the metal shell; the ceramic capacitance sensing core is connected with the NTC temperature sensing core through the NTC connecting block; the PCB is connected with the ceramic capacitance induction core body and the FPCB; the FPCB is connected the connector, the connector is located the metal casing top, the even play end of connector is located the metal casing outside.

Preferably, the bottom hole at the bottom of the metal shell further comprises heat conducting glue and packaging glue; the heat-conducting glue is filled at the bottom of the bottom hole, and the NTC temperature sensing core body is inserted into the heat-conducting glue; the packaging adhesive is located on the upper surface of the heat conducting adhesive and is matched with the heat conducting adhesive to seal the NTC temperature sensing core body.

Preferably, the NTC connecting block is an injection molding part and consists of 2 connecting PINs PIN and an injection molding shell; one end, located on the lower surface of the NTC connecting block, of the connecting PIN PIN is of a structure with a soldering hole, and the other end, located on the upper surface, of the connecting PIN PIN is of a spring plate structure; the NTC temperature sensing core is connected with the soldering hole structure with the connecting PIN PIN of the NTC connecting block through the soldering hole, the NTC temperature sensing core is connected with two wires, and the wires penetrate through the soldering hole structure with the soldering hole structure and are soldered on the soldering hole through soldering tin; the NTC connecting block is placed in a limiting groove in the metal shell and is pressed and limited by the ceramic capacitor induction core; the injection molding shell is used for positioning and protecting the connection PIN PIN.

Preferably, the testing device further comprises a sealing ring, the sealing ring is placed in the limiting groove in the metal shell, sleeved outside the NTC connecting block and compressed and limited by the ceramic capacitor induction core to form an end face sealing structure; the NTC connecting block is in contact with the bottom of the ceramic capacitor sensing core body in a contact position distribution mode through the elastic sheet structure of the connecting PIN PIN, and transmits 2NTC electric signals to connecting PINs on the upper surface of the ceramic capacitor sensing core body.

Preferably, the PCB is provided with a through hole, the through hole is welded, fixed and positioned on the upper surface of the ceramic capacitive sensing core, the surface of the ceramic capacitive sensing core is provided with a welding needle, the welding needle is welded in the through hole of the PCB, so as to fix the ceramic capacitive sensing core, and the connecting needle on the upper surface of the ceramic capacitive sensing core is electrically connected with the ceramic capacitive sensing core to receive an electrical signal in the ceramic capacitive sensing core; the PCB is also provided with a conditioning chip and an IC which are welded and fixed on the welding position of the PCB, and the conditioning chip and the IC convert electric signals into voltage signals and transmit the voltage signals to the welding position of the PCB. The welding position is a metal sheet and mainly used for providing a welding position on the PCB, and a layer of soldering tin is attached to the welding position in advance for better welding performance under the common condition. Generally, the pins, wires, etc. to be welded are placed on the welding station, then the soldering tin is melted, dropped or coated on the welding station, and when the soldering tin is solidified into solid, the pins, wires, etc. to be welded are fixed and connected on the welding station.

Preferably, an upper end welding hole of the FPCB is fixedly connected to the welding position on the PCB in a welding manner, so that an electrical signal on the welding position of the PCB is transmitted to the upper end welding hole of the FPCB, and the FPCB and the PCB are fixed in position; the connector passes through set up on the FPCB the perforation with the FPCB soldering is connected to transmit the signal of telecommunication.

Preferably, the connector comprises 4 connecting PINs PIN and the injection molding shell; the connecting PIN PIN is a stamped metal straight PIN, is connected with the through hole of the FPCB and transmits an electric signal; the injection molding shell is used for positioning and protecting the connection PIN PIN.

Preferably, the ceramic capacitive sensing core, the PCB, the FPCB and the connector form a chip assembly, the chip assembly is placed in the limiting groove in the metal shell, and the chip assembly is fixed and sealed in the metal shell by riveting; and after the riveting is finished, sealing silica gel is adopted to carry out sealing and dustproof treatment on a gap between the riveting curled edge of the metal shell and the connector.

Preferably, the connecting end of the connector is connected with a Tyco368162-1 connector or a BOSCH1928403736 connector in a matching mode.

Preferably, the outer wall of the bottom hole of the metal shell is provided with threads, and the metal shell can be screwed on external equipment.

Preferably, the sealing ring is a square sealing ring and is matched with the NTC connecting block in shape.

According to the technical scheme, compare with prior art, the utility model discloses an integral type testing arrangement of test pressure and temperature uses the ceramic capacitor pressure core that takes the position to connect, has anticorrosive, wear-resisting, shock resistance, thermal stability characteristic is good, measurement accuracy is high, the range is big, numerous advantages such as pollution-free. By adopting the NTC temperature sensing core body, the testing device has the characteristics of stability, wide working temperature range and the like. The utility model discloses pass through the point location with ceramic capacitor pressure core and NTC temperature sensing core and combine to have compact structure, it is convenient to maintain, and simple to operate's advantage realizes pressure temperature integration test function, effectively reduces the influence to the inherent pipeline of diesel engine simultaneously. Meanwhile, the ceramic capacitor pressure core can stably work at-55-150 ℃, and the NTC temperature sensing core can work at-40-130 ℃, so that the testing device has higher working precision at the working temperature of the lubricating oil of the diesel engine machine.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic side sectional view of an integrated pressure and temperature testing device provided in the present invention;

FIG. 2 is a schematic diagram of an explosion structure of the integrated pressure and temperature testing device provided by the present invention;

FIG. 3 is a schematic diagram of an explosion test of the integrated pressure and temperature testing device provided by the present invention;

FIG. 4 is a schematic view of an enlarged top structure of a metal shell according to the present invention;

FIG. 5 is an enlarged schematic view of a position structure of a metal shell limiting groove provided by the present invention;

FIG. 6 is a schematic view of the whole integrated testing device for testing pressure and temperature provided by the present invention;

fig. 7 is a schematic top view of the NTC connecting block according to the present invention;

fig. 8 is a schematic view of the bottom view structure of the NTC connecting block according to the present invention.

In fig. 1: the sensor comprises 1-heat conducting glue, 2-NTC temperature sensing core, 3-packaging glue, 4-sealing ring, 5-NTC connecting block, 51-elastic sheet structure, 52-soldering hole structure, 6-ceramic capacitance sensing core, 61-connecting pin, 7-PCB, 8-FPCB, 9-connector, 10-sealing silica gel, 11-metal shell and 12-connecting outlet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The embodiment of the utility model discloses an integrated testing device for testing pressure and temperature, which comprises an NTC temperature sensing core body 2, an NTC connecting block 5, a ceramic capacitance sensing core body 6, a PCB7, a FPCB8, a connector 9 and a metal shell 11;

the NTC temperature sensing core body 2, the NTC connecting block 5, the ceramic capacitance sensing core body 6, the PCB7, the FPCB8 and the connector 9 are fixed in the metal shell 11;

the NTC temperature sensing core body 2 is fixed in a bottom hole at the bottom of the metal shell 11; the ceramic capacitance sensing core 6 is connected with the NTC temperature sensing core 2 through the NTC connecting block 5; the PCB is connected with the ceramic capacitance induction core body 6 and the FPCB 8; the FPCB8 is connected to the connector 9, the connector 9 is located on the top of the metal shell 11, and the connection end of the connector 9 is located outside the metal shell 11.

In order to further optimize the technical scheme, the bottom hole at the bottom of the metal shell 11 also comprises heat conducting glue 1 and packaging glue 3; the heat-conducting glue 1 is filled at the bottom of the bottom hole, and the NTC temperature sensing core body 2 is inserted into the heat-conducting glue 1; the packaging adhesive 3 is located on the upper surface of the heat-conducting adhesive 1 and is matched with the heat-conducting adhesive 1 to seal the NTC temperature sensing core body 2.

In order to further optimize the technical scheme, the NTC connecting block 5 is an injection molding part and consists of 2 connecting PINs PIN and an injection molding shell; one end of the connecting PIN PIN, which is positioned on the lower surface of the NTC connecting block 5, is provided with a soldering hole structure 52, and the other end of the connecting PIN PIN, which is positioned on the upper surface, is provided with a spring sheet structure 51; the NTC temperature sensing core body 2 is connected with a soldering hole structure 52 with a soldering PIN PIN of the NTC connecting block 5 through a soldering hole, the NTC temperature sensing core body 2 is connected with two wires, and the wires penetrate through the soldering hole with the soldering hole structure 52 and are soldered on the soldering hole through soldering tin; the NTC connecting block 5 is placed in a limiting groove in the metal shell 11 and is compressed and limited by the ceramic capacitor induction core 6; the injection molding shell is used for positioning and protecting the connection PIN PIN.

In order to further optimize the technical scheme, the testing device further comprises a sealing ring 4, wherein the sealing ring 4 is placed in a limiting groove in the metal shell 11, sleeved outside the NTC connecting block 5 and pressed and limited by the ceramic capacitor induction core 6 to form an end face sealing structure; the NTC connecting block 5 is contacted with the bottom of the ceramic capacitance sensing core 6 through the contact party of the elastic sheet structure 51 of the connecting PIN PIN, and transmits the 2NTC electric signal to the connecting PIN 61 on the upper surface of the ceramic capacitance sensing core 6.

In order to further optimize the technical scheme, the PCB7 is provided with a through hole, the through hole is welded, fixed and positioned on the upper surface of the ceramic capacitance sensing core 6, the surface of the ceramic capacitance sensing core 6 is provided with a welding needle, and the welding needle is welded in the through hole of the PCB7, so that the ceramic capacitance sensing core 6 is fixed, the connection needle 61 on the upper surface of the ceramic capacitance sensing core 6 is connected with the ceramic capacitance sensing core 6 through an electric signal, and the electric signal in the ceramic capacitance sensing core 6 is received; the PCB7 is further provided with a conditioning chip and an IC, which are soldered to the solder pad of the PCB7, and the electrical signal is converted into a voltage signal by the conditioning chip and the IC and transmitted to the solder pad of the PCB 7.

In order to further optimize the technical scheme, the upper end welding hole of the FPCB8 is fixedly connected with the welding position on the PCB7 in a welding mode, an electric signal on the welding position of the PCB7 is transmitted to the upper end welding hole of the FPCB8, and the FPCB8 and the PCB7 are fixed in a positioning mode; the connector 9 is soldered to the FPCB8 through a through hole provided in the FPCB8, and transmits an electrical signal.

In order to further optimize the above technical solution, the connector 9 comprises 4 connection PINs PIN and an injection molded housing; the connecting PIN PIN is a stamped metal straight PIN, is connected with the through hole of the FPCB8 and transmits an electric signal; the injection molding shell is used for positioning and protecting the connection PIN PIN.

In order to further optimize the technical scheme, the ceramic capacitance sensing core body 6, the PCB7, the FPCB8 and the connector 9 form a chip assembly, the chip assembly is placed in a limiting groove in the metal shell 11, and the chip assembly is fixed and sealed in the metal shell 11 through riveting;

in order to further optimize the technical scheme, a gap between the riveting curled edge of the metal shell 11 and the connector 9 after riveting is sealed and dustproof by adopting sealing silica gel 10.

In order to further optimize the technical scheme, the connecting end 12 of the connector 9 is connected with a Tyco368162-1 connector or a BOSCH1928403736 connector in a matching mode.

In order to further optimize the above technical solution, the outer wall of the bottom hole of the metal shell 11 is provided with threads, and the metal shell 11 can be screwed on a machine lubrication oil pipeline of an external device.

In order to further optimize the technical scheme, the sealing ring is a square sealing ring and is matched with the shape of the NTC connecting block 5.

Examples

The testing device is assembled and constructed on the basis of the metal shell 11, the heat-conducting glue 1 is injected into the bottom of the metal shell 11 with a certain dosage, the NTC temperature sensing core body 2 is inserted into the heat-conducting glue 1, the heat-conducting glue 1 is enabled to fill the gap between the metal shell 11 and the NTC temperature sensing core body 2, and the heat-conducting glue 1 plays a role in fixing the NTC temperature sensing core body 2 in the metal shell 11 and conducting heat on the metal shell 11 to the NTC temperature sensing core body 2.

And injecting the packaging adhesive 3 into a gap between the upper surface of the heat-conducting adhesive 1 and the bottom hole of the metal shell 11, so as to protect the heat-conducting adhesive 1 from being impacted by excessive pressure.

The NTC connecting block 5 is an injection molding part and consists of a connecting PIN PIN and an injection molding shell, wherein one end of the connecting PIN PIN is of a structure 52 with a soldering hole, and the other end of the connecting PIN PIN is of a spring structure 51. The NTC temperature sensor core 2 is soldered to the bottom of the two PINs of the NTC connecting block 5 by means of a through-hole. The NTC connecting block 5 is in contact with the bottom of the ceramic capacitance sensing core 6 through two elastic sheets of the elastic sheet structure 51, and transmits the 2NTC electrical signal to the connecting pins 61 on the upper surface of the ceramic capacitance sensing core 6. The NTC connecting block 5 is placed in a limiting groove in the metal shell 11 and is compressed and limited through the ceramic capacitor induction core 6.

The sealing ring 4 is placed in a limiting groove in the metal shell 11, is sleeved outside the NTC connecting block 5, is compressed and limited through the ceramic capacitor induction core 6, and forms an end face sealing structure, wherein the sealing ring is a square sealing ring.

PCB7 is fixed in ceramic capacitance induction core 6 upper surface through perforation welding, location to accomplish signal connection through the connecting pin 61 of ceramic capacitance induction core 6 upper surface and ceramic capacitance induction core 6, receive the signal of telecommunication among the ceramic capacitance induction core 6, through the chip and the IC of taking care of on PCB7 with signal of telecommunication processing become voltage signal, and transmit to the welding of PCB7 and allocate.

The FPCB8 is fixed and connected to the solder station on the PCB7 by soldering, and transmits an electrical signal on the solder station of the PCB7 to the upper solder hole of the FPCB 8. The connector 9 is connected to the FPCB8 by through-hole soldering and obtains an electric signal.

The connector 9 comprises 4 connecting PINs PIN and an injection molding shell, wherein the 4 connecting PINs PIN are punched metal straight PIN and are used for connecting electric signals, and the injection molding shell is used for positioning and protecting.

The ceramic capacitance sensing core body 6, the PCB7, the FPCB8 and the connector 9 form a chip assembly, the chip assembly is placed in a limiting groove in the metal shell 11, the chip assembly is fixed and sealed in the metal shell 11 through riveting, the connecting end 12 of the connector 9 is arranged on the outer side of the metal shell 11, and the connecting end 12 is connected with a Tyco368162-1 connector or a BOSCH1928403736 connector in a matched mode. After the riveting, a gap is formed between the riveting curled edge of the metal shell 11 and the connector 9, and the sealing silica gel 10 is injected into the gap for sealing and dust prevention.

The testing medium (which can be engine oil) has impact effect (namely water hammer effect) when the pressure changes suddenly, and has great test on the pressure measuring core body, the ceramic capacitance sensing core body adopted by the utility model consists of a base and a diaphragm, the general thickness of the base is more than 2mm, the thickness of the base used by the utility model is 4mm, the diaphragm material is alumina ceramic, the material is brittle, the general thickness is between 0.1 and 1mm, the thickness of all pressure sensing diaphragms of the utility model is 0.33mm, the base is adhered with the diaphragm by glass, the surface of the diaphragm facing the base is printed with electrodes (generally gold thin sheets, the thickness is about 10 microns), the same base also is printed with electrodes (the material and the thickness are the same as the diaphragm electrodes) facing the diaphragm, the diaphragm electrodes are not contacted with the base electrodes under the normal state, and form capacitance with the cavity between the two electrodes, the capacitance value is about 10PF when the diaphragm is not stressed, when the diaphragm is pressed, the capacitance value changes due to the change of the distance between the electrodes, and the pressure applied to the diaphragm is converted according to the change value of the tested capacitance, namely the pressure of the tested medium is realized. Ceramic capacitor responds to the core and especially strikes when too big when receiving the impact, and the pressure sensing diaphragm can paste tight base, and the pressure sensing diaphragm can give the base with too big pressure transmission through pasting tight base to play the effect of protection diaphragm, consequently the utility model discloses can realize shocking resistance, anti-vibration.

The arrow in fig. 1 indicates the direction of the structural description of the testing device, and fig. 6 shows the overall appearance of the testing device with integrated pressure and temperature testing, wherein the end of the threaded interface is a pressure medium inlet, the convex part of the threaded interface is a temperature sensing area, and the other end of the testing device is the connection end of the connector and is an electrical interface.

Fig. 7 is a schematic view showing a top view structure of the NTC connection block, and fig. 8 is a schematic view showing a bottom view structure of the NTC connection block, wherein the end of the elastic sheet structure 51 is in a hook-shaped configuration, and is elastically connected with the ceramic capacitive sensing core 6, and the structure 52 with the soldering hole is in a configuration similar to that of the connection terminal, so that the soldering connection can be realized.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An integrated testing device for testing pressure and temperature is characterized by comprising an NTC temperature sensing core body (2), an NTC connecting block (5), a ceramic capacitance sensing core body (6), a PCB (7), an FPCB (8), a connector (9) and a metal shell (11);

the NTC temperature sensing core body (2), the NTC connecting block (5), the ceramic capacitance sensing core body (6), the PCB (7), the FPCB (8) and the connector (9) are fixed in the metal shell (11);

the NTC temperature sensing core body (2) is fixed in a bottom hole at the bottom of the metal shell (11); the ceramic capacitance sensing core (6) is connected with the NTC temperature sensing core (2) through the NTC connecting block (5); the PCB is connected with the ceramic capacitance induction core body (6) and the FPCB (8); FPCB (8) are connected connector (9), connector (9) are located metal casing (11) top, the end of linking out of connector (9) is located the metal casing (11) outside.

2. The integrated pressure and temperature testing device as claimed in claim 1, wherein the bottom hole of the bottom of the metal shell (11) further comprises a heat conducting glue (1) and a packaging glue (3); the heat-conducting glue (1) is filled at the bottom of the bottom hole, and the NTC temperature sensing core body (2) is inserted into the heat-conducting glue (1); the packaging adhesive (3) is located on the upper surface of the heat-conducting adhesive (1) and is matched with the heat-conducting adhesive (1) to seal the NTC temperature sensing core body (2).

3. The integrated pressure and temperature testing device as claimed in claim 1, wherein the NTC connecting block (5) is an injection molding part, and is composed of 2 connecting PINs PIN and an injection molding shell; one end, located on the lower surface of the NTC connecting block (5), of the connecting PIN PIN is provided with a soldering hole structure (52), and the other end, located on the upper surface, of the connecting PIN PIN is provided with a spring sheet structure (51); the NTC temperature sensing core body (2) is connected with the soldering hole structure (52) with the connecting PIN PIN of the NTC connecting block (5) through soldering holes; the NTC connecting block (5) is placed in a limiting groove in the metal shell (11) and is pressed and limited through the ceramic capacitor induction core body (6).

4. The integrated pressure and temperature testing device of claim 3, further comprising a sealing ring (4), wherein the sealing ring (4) is placed in the limiting groove in the metal housing (11), sleeved outside the injection molding housing of the NTC connecting block (5) and compressed and limited by the ceramic capacitance sensing core (6) to form an end face sealing structure; the NTC connecting block (5) is in contact with the bottom of the ceramic capacitance sensing core body (6) in a position-distributing manner through the elastic sheet structure (51) of the connecting PIN PIN, and transmits the 2NTC electric signal to a connecting PIN (61) on the upper surface of the ceramic capacitance sensing core body (6).

5. The integrated pressure and temperature testing device as claimed in claim 4, wherein the PCB (7) is provided with a through hole, and the through hole is fixed by welding, positioned on the upper surface of the ceramic capacitance sensing core (6), and is electrically connected with the ceramic capacitance sensing core (6) through the connecting pin (61) on the upper surface of the ceramic capacitance sensing core (6) to receive the electrical signal in the ceramic capacitance sensing core (6); the PCB (7) is further provided with a conditioning chip and an IC, the conditioning chip and the IC are welded and fixed on a welding position of the PCB (7), and an electric signal is converted into a voltage signal through the conditioning chip and the IC and is transmitted to the welding position of the PCB (7).

6. An integrated pressure and temperature testing device according to claim 5, wherein the upper end welding hole of the FPCB (8) is fixedly connected with the welding position on the PCB (7) in a welding way, and the electric signal on the welding position of the PCB (7) is transmitted into the upper end welding hole of the FPCB (8); the connector (9) is connected with the FPCB (8) in a soldering mode through the through hole formed in the FPCB (8), and transmits an electric signal.

7. An integrated pressure and temperature testing device according to claim 6, wherein the connector (9) comprises 4 connecting PINs PIN and the injection molded housing; connect PIN PIN and be the straight PIN of punching press metal, with FPCB (8) punch a hole and connect, transmit the signal of telecommunication.

8. An integrated pressure and temperature testing device according to claim 1, further comprising a sealing silicone (10), wherein the sealing silicone (10) is poured into a gap between the metal housing (11) and the connector (9).

9. An integrated pressure and temperature testing device according to claim 1, characterized in that the connection end (12) of the connector (9) is connected with a Tyco368162-1 connector or a BOSCH1928403736 connector in a mating manner.

10. An integrated pressure and temperature testing device according to claim 1, wherein the outer wall of the bottom hole of the metal shell (11) is provided with screw threads, and the metal shell (11) can be screwed on external equipment.