Small-sized temperature and pressure composite sensor

Abstract

The utility model discloses a small-sized temperature and pressure composite sensor, which comprises a filler neck, an outer cover, a pressure core body, a conditioning circuit assembly, a pressure circuit assembly, a temperature circuit assembly, a power supply circuit assembly and a lead, the filler neck is provided with a pressure inlet hole and a temperature wiring hole which are eccentrically arranged, the pressure inlet hole corresponds to a core body cavity which is eccentrically arranged, and the temperature wiring hole corresponds to a core body cavity which is eccentrically arranged. The temperature wiring hole comprises a wiring straight hole and a wiring inclined hole which are parallel to the pressure inlet hole, the starting end of the wiring straight hole is used for installing a temperature probe with a platinum resistor, one end of the wiring inclined hole is communicated with the tail end of the wiring straight hole, and the other end of the wiring inclined hole is located on the outer side of the core body cavity. The pressure core body is installed in the eccentric core body cavity on the filler neck, and the stepped pressure inlet hole and the temperature wiring hole are designed, so that a pressure signal and a temperature signal can be measured at the same time, stable and continuous output can be ensured in the testing process, the integral strength is ensured, and meanwhile, the filler neck is convenient to process and manufacture; the stable welding of the temperature probe and the pressure core body and the smooth wiring of the platinum resistor are realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to sensor technical field, concretely is a kind of small temperature and pressure composite sensor. BACKGROUND

[0002] More pressure signals and temperature signals need to be measured in current aviation, hydraulic and gas systems, and pressure sensor and temperature sensor are the two most used sensors. Ordinary pressure sensor or temperature sensor can only measure a single physical quantity, and if pressure signal and temperature signal need to be measured simultaneously, two sensors need to be installed for measurement, resulting in high cost, large space occupation, installation inconvenience and other problems.

[0003] Current temperature and pressure composite sensors are less in variety, large in quality and volume, and high in manufacturing cost, and when designing connector nozzle, often adopt the way of damaging external structure to open multi-section straight hole for wiring, affecting the appearance. Therefore, it is crucial to design a small, low-cost temperature and pressure composite sensor. UTILITY MODEL CONTENT

[0004] The utility model aims at the problems existing in prior art, and provides a small temperature and pressure composite sensor capable of simultaneously measuring temperature and pressure.

[0005] The utility model aims at the problems existing in prior art, and provides a small temperature and pressure composite sensor capable of simultaneously measuring temperature and pressure.

[0006] A small temperature and pressure composite sensor, comprising connector nozzle, outer cover, pressure core body, conditioning circuit assembly, pressure circuit assembly, temperature circuit assembly, power circuit assembly and wire, characterized in that: the connector nozzle is provided with eccentrically arranged pressure inlet hole and temperature wiring hole, the pressure inlet hole corresponds to eccentrically arranged core body cavity, the temperature wiring hole comprises wiring straight hole and wiring inclined hole arranged parallel to the pressure inlet hole, the starting end of the wiring straight hole is used for installing temperature probe with platinum resistance, one end of the wiring inclined hole is communicated with the tail end of the wiring straight hole, and the other end is located outside the core body cavity.

[0007] An arc-shaped groove matched with the temperature wiring hole is arranged on the outer wall of the core body cavity.

[0008] The pressure inlet hole is a stepped hole, and the closer to the pressure core body, the larger the hole diameter of the pressure inlet hole.

[0009] The conditioning circuit assembly is plugged on the pressure core body, and an insulating gasket is arranged between the pressure core body and the conditioning circuit assembly.

[0010] The outer cover is sleeved outside the core body cavity, and the lower end surface of the outer cover is laser-welded on the stepped surface arranged on the outer wall of the connector nozzle.

[0011] The top of the outer cover is welded with a top cover, so that a sealed cavity is formed inside the sensor, and a cable outlet hole is arranged in the middle of the top cover.

[0012] The inner wall of the outer cover is provided with a protruding ear platform, and any one of the parallel arranged pressure circuit assembly, temperature circuit assembly and power supply circuit assembly separated by support columns is placed on the ear platform, and the remaining two are placed on top in sequence, and the pressure circuit assembly, temperature circuit assembly, power supply circuit assembly, support column and ear platform are uniformly fixed and installed by screws.

[0013] The temperature circuit assembly is tin soldered with the lead wire of the platinum resistance, and the lead wire of the temperature circuit assembly is tin soldered with the power supply circuit assembly.

[0014] The lead wire of the pressure circuit assembly is tin soldered with the conditioning circuit assembly and the power supply circuit assembly respectively, and the conditioning circuit assembly is tin soldered on the pin of the pressure core.

[0015] The power supply circuit assembly is tin soldered with the lead wire stripped from the cable, and the cable passes through the cable outlet hole on the top cover and is fixed by using a heat shrink tube at the outer end of the cable outlet hole.

[0016] Compared with the prior art, the small temperature and pressure composite sensor has the following advantages:

[0017] The small temperature and pressure composite sensor integrates the pressure assembly and the temperature assembly in one sensor without interference, can simultaneously measure the pressure signal and the temperature signal, and can stably and continuously output during the test process, has light overall quality, small volume, low cost, compact and simple structure, high manufacturability, can simultaneously measure the temperature signal and the pressure signal, and greatly guarantees the timeliness of measurement and the economy of manufacturing.

[0018] The small temperature and pressure composite sensor integrates the pressure assembly and the temperature assembly in one sensor without interference, can simultaneously measure the pressure signal and the temperature signal, and can stably and continuously output during the test process, has light overall quality, small volume, low cost, compact and simple structure, high manufacturability, can simultaneously measure the temperature signal and the pressure signal, and greatly guarantees the timeliness of measurement and the economy of manufacturing.

[0019] The small temperature and pressure composite sensor integrates the pressure assembly and the temperature assembly in one sensor without interference, can simultaneously measure the pressure signal and the temperature signal, and can stably and continuously output during the test process, has light overall quality, small volume, low cost, compact and simple structure, high manufacturability, can simultaneously measure the temperature signal and the pressure signal, and greatly guarantees the timeliness of measurement and the economy of manufacturing. BRIEF DESCRIPTION OF DRAWINGS

[0020] ATTACHMENT Fig. 1 The small temperature and pressure composite sensor provided by the utility model provides a sectional structure schematic view;

[0021] ATTACHMENT Fig. 2This is a cross-sectional view of the small temperature and pressure composite sensor provided by this utility model.

[0022] Wherein: 1—Connecting nozzle; 101—Pressure inlet; 102—Temperature wiring hole; 1021—Straight wiring hole; 1022—Angled wiring hole; 103—Core cavity; 2—Outer cover; 21—Ear mount; 3—Top cover; 4—Support column; 5—Pressure core; 6—Insulating gasket; 7—Temperature probe; 8—Platinum resistance thermometer; 9—Conditioning circuit assembly; 10—Pressure circuit assembly; 11—Temperature circuit assembly; 12—Power circuit assembly; 13—Wire; 14—Screw. Detailed Implementation

[0023] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0024] The terms “a,” “one,” “the,” and “the” are used to indicate the existence of one or more elements / components / etc.; the terms “including” and “having” are used to indicate an open-ended meaning of inclusion and that other elements / components / etc. may exist in addition to the listed elements / components / etc.

[0025] like Figs. 1-2 As shown: A small temperature and pressure composite sensor includes a connector 1, an outer cover 2, a pressure core 5, a conditioning circuit assembly 9, a pressure circuit assembly 10, a temperature circuit assembly 11, a power supply circuit assembly 12, and a wire 13. The connector 1 is provided with an eccentrically arranged pressure inlet 101 and a temperature wiring hole 102. The pressure inlet 101 corresponds to the eccentrically arranged core cavity 103. The temperature wiring hole 102 includes a straight wiring hole 1021 and a slanted wiring hole 1022 arranged parallel to the pressure inlet 101. The starting end of the straight wiring hole 1021 is used to install a temperature probe 7 with a platinum resistance 8. One end of the slanted wiring hole 1022 is connected to the tail end of the straight wiring hole 1021, and the other end is located outside the core cavity 103. The outer wall of the core cavity 103 is provided with an arc-shaped groove that matches the temperature wiring hole 102. The pressure inlet 101 is a stepped hole, and the diameter of the pressure inlet 101 is larger the closer it is to the pressure core 5.

[0026] In this small temperature and pressure composite sensor, the conditioning circuit assembly 9 is inserted into the pressure core 5 and an insulating gasket 6 is provided between the pressure core 5 and the conditioning circuit assembly 9; the outer cover 2 is fitted outside the core cavity 103 and the lower end face of the outer cover 2 is laser welded to the stepped surface provided on the outer wall of the connector 1; the top cover 3 is welded to the top of the outer cover 2, so that the inside of the sensor forms a sealed cavity; a cable outlet hole is provided in the middle of the top cover 3. A protruding earpiece 21 is provided on the inner wall of the outer cover 2. One of the pressure circuit assembly 10, temperature circuit assembly 11, and power circuit assembly 12, which are arranged in parallel and separated by support columns 4, is placed on the earpiece 21, and the other two are placed on top of it. The pressure circuit assembly 10, temperature circuit assembly 11, power circuit assembly 12, support columns 4, and earpiece 21 are all fixedly installed with screws 14. It should be noted that the temperature circuit assembly 11 is soldered to the lead wire 13 of the platinum resistance 8, and the lead wire 13 of the temperature circuit assembly 11 is soldered to the power circuit assembly 12. The lead wire 13 of the pressure circuit assembly 10 is soldered to the conditioning circuit assembly 9 and the power circuit assembly 12 respectively. The conditioning circuit assembly 9 is soldered to the pin of the pressure core 5. The power circuit assembly 12 is soldered to the lead wire 13 of the stripped cable, and the cable passes through the cable outlet hole on the top cover 3 and is fixed with heat shrink tubing at the outer end of the cable outlet hole. Example

[0027] like Figs. 1-2 The illustrated miniature temperature and pressure composite sensor includes a connector 1, an outer cover 2, a top cover 3, a support column 4, a pressure core 5, an insulating gasket 6, a temperature probe 7, a platinum resistance thermometer 8, a conditioning circuit assembly 9, a pressure circuit assembly 10, a temperature circuit assembly 11, a power supply circuit assembly 12, wires 13, and screws 14. An eccentrically positioned core cavity 103 is designed within the inner cavity of the connector 1 to avoid the temperature outlet hole 102. An eccentrically positioned stepped pressure inlet hole 101 is designed at a corresponding location within the eccentrically positioned core cavity 103. The pressure core 5 can be welded into the core cavity 103. Inside the connector 1 at the far end of the core cavity 103, a slanted hole 1022 for wiring is opened, and a straight hole 1021 for wiring is opened at the bottom of the connector 1, which is at a certain distance from the pressure inlet hole 101. The straight hole 1021 and the pressure inlet hole 101 are arranged in parallel. The straight hole 1021 and the slanted hole 1022 are interconnected for the lead wire 13 of the platinum resistance 8 to be led out. An enlarged stepped hole is designed on the straight hole 1021 on the bottom surface of the connector 1 to weld the temperature probe 7. The lower outer surface of the connector 1 is designed according to the industry standard mechanical interface, and the upper end is hexagonal with a wire hole.

[0028] Two threaded hole ear platform 21 are contained in the outer cover 2 inside, for screw 14 install pressure circuit assembly 10, temperature circuit assembly 11, power supply circuit assembly 12, each circuit assembly is isolated using support column 4;Top cover 3 is welded together with outer cover 2, so that the sensor inside forms a sealed cavity, the center of top cover 3 is designed cable outlet hole;Support column 4 is used for the isolation and fixation between circuit assemblies, to ensure insulation;Temperature probe 7 is welded with the wiring straight hole 1021 of the lower end of connector nozzle 1, and platinum resistance 8 can be installed inside;Pressure core 5 pin tin soldering conditioning circuit assembly 9 and using insulating pad 6 isolation, conditioning circuit assembly 9 leads out lead 13 tin soldering pressure circuit assembly 10, pressure circuit assembly 10 leads out lead 13 tin soldering power supply circuit assembly 12;Insulating pad 6 is used for the insulation isolation of pressure core 5 and the upper layer circuit board;Platinum resistance 8 leads out lead 13 tin soldering temperature circuit assembly 11, temperature circuit assembly 11 leads out lead 13 tin soldering power supply circuit assembly 12;Cable stripping leads out lead 13 and power supply circuit assembly 12 tin soldering, pass through the outlet hole of top cover 3 and use heat shrink tube to fix outside the outlet hole.

[0029] The small temperature and pressure composite sensor of the utility model works, pressure core 5, conditioning circuit assembly 9, pressure circuit assembly 10, power supply circuit assembly 12 and lead 13 form a pressure circuit system, for linear conversion of pressure signal into current signal;Platinum resistance 8, temperature circuit assembly 11, power supply circuit assembly 12 and lead 13 form a temperature circuit system, for linear conversion of temperature signal into current signal;Pressure circuit system and temperature circuit system share a power supply, and the circuit output is independent, and does not interfere with each other.

[0030] The small temperature and pressure composite sensor of the utility model runs, and temperature signal and pressure signal are independently output, do not interfere with each other, not only save space, but also guarantee the convenience and speed of switching;The overall quality is light, and the volume is small, the cost is low, the structure is compact and simple, the manufacturability is high, temperature signal and pressure signal can be measured simultaneously, and the timeliness of measurement and the economy of manufacture are greatly guaranteed.

[0031] In the embodiment of the utility model, the term "a plurality of" refers to two or more than two, unless otherwise explicitly limited. The terms "install", "connect", "fix" and other terms should be broadly understood, for example, "connect" can be fixedly connected, can be detachably connected, or integrally connected. For ordinary skilled in the art, the specific meaning of the above terms in the embodiment of the utility model can be understood according to the specific circumstances.

[0032] In the description of the embodiments of the utility model, it is understood that the orientation or position relationship indicated by the terms "upper", "lower" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the embodiments of the utility model and simplifying the description, and does not indicate or imply that the device or unit indicated must have a specific direction, be constructed and operated in a specific orientation, therefore, it cannot be understood as a limitation on the embodiments of the utility model.

[0033] In the description of the present specification, the description of the terms "one embodiment", "one preferred embodiment" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are contained in at least one embodiment or example of the embodiments of the utility model. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0034] The above embodiments only illustrate the technical idea of the utility model, and cannot limit the protection scope of the utility model, any modification made on the basis of the technical scheme according to the technical idea of the utility model falls within the protection scope of the utility model; the technologies not involved in the utility model can be realized by the prior art.

Claims

1. A small-sized temperature and pressure composite sensor comprising a connector nozzle (1), an outer cover (2), a pressure core (5), a conditioning circuit assembly (9), a pressure circuit assembly (10), a temperature circuit assembly (11), a power supply circuit assembly (12) and a lead wire (13), characterized in that: The inlet pressure hole (101) is correspondingly eccentrically arranged in the core cavity (103), and the temperature wire hole (102) includes a wire straight hole (1021) arranged in parallel with the inlet pressure hole (101) and a wire inclined hole (1022), the starting end of the wire straight hole (1021) is used for mounting a temperature probe (7) provided with a platinum resistance (8), and one end of the wire inclined hole (1022) is communicated with the tail end of the wire straight hole (1021) and the other end is located outside the core cavity (103).

2. The compact temperature and pressure composite sensor of claim 1, wherein: An arc-shaped groove matched with the temperature wire hole (102) is arranged on the outer wall of the core cavity (103).

3. The compact temperature and pressure composite sensor of claim 1, wherein: The inlet pressure hole (101) is a stepped hole, and the closer to the pressure core (5), the larger the hole diameter of the inlet pressure hole (101).

4. The compact temperature and pressure composite sensor of claim 1, wherein: The conditioning circuit assembly (9) is inserted on the pressure core (5), and an insulating gasket (6) is arranged between the pressure core (5) and the conditioning circuit assembly (9).

5. The compact temperature and pressure composite sensor of claim 1, wherein: The outer cover (2) is sleeved outside the core cavity (103), and the lower end surface of the outer cover (2) is laser welded on the stepped surface arranged on the outer wall of the inlet nozzle (1).

6. The compact temperature and pressure composite sensor of claim 1, wherein: A top cover (3) is welded on the top of the outer cover (2), so that a sealed cavity is formed inside the sensor, and a cable outlet hole is arranged in the middle of the top cover (3).

7. The compact temperature and pressure composite sensor according to any one of claims 1 to 6, characterized in that: A protruding ear platform (21) is arranged on the inner wall of the outer cover (2), and any one of the parallel arranged pressure circuit assembly (10), temperature circuit assembly (11) and power circuit assembly (12) separated by a support column (4) is placed on the ear platform (21), and the remaining two are placed on the top in turn, and the pressure circuit assembly (10), the temperature circuit assembly (11), the power circuit assembly (12), the support column (4) and the ear platform (21) are fixed and installed by screws (14).

8. The miniaturized barothermograph sensor according to claim 7, characterized in that: The temperature circuit assembly (11) is tin soldered with the lead wire (13) led out from the platinum resistance (8), and the lead wire (13) led out from the temperature circuit assembly (11) is tin soldered with the power circuit assembly (12).

9. The miniaturized barothermograph sensor according to claim 7, wherein: The lead wire (13) led out from the pressure circuit assembly (10) is tin soldered with the conditioning circuit assembly (9) and the power circuit assembly (12) respectively, and the conditioning circuit assembly (9) is tin soldered on the pin of the pressure core (5).

10. The miniaturized barothermograph sensor according to claim 7, wherein: The power circuit assembly (12) is tin soldered with the lead wire (13) stripped from the cable, and the cable passes through the cable outlet hole in the top cover (3) and is fixed by a heat shrink tube at the outer end of the cable outlet hole.

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