A non-contact temperature detection device

Abstract

The present invention provides a non-contact temperature detection device, comprising a fixed shell, the interior of which is hollow; a protective cover connected to the fixed shell, the interior of which is hollow and communicated with the interior of the fixed shell, and a through hole is provided on one end face of the protective cover away from the fixed shell; an infrared temperature sensor is provided in the fixed shell, and the detection device of the infrared temperature sensor is arranged toward the through hole; a plurality of elastic members are provided on the inner wall of the protective cover; wherein a channel for infrared rays to pass through is formed between the through hole and the detection device of the infrared temperature sensor, and the elastic member is located outside the channel. The non-contact temperature detection device proposed by the present invention can weaken the effect of explosion shock waves and prevent the front of the infrared temperature sensor from being damaged by shock waves.

Description

Technical Field

[0001] The invention belongs to the technical field of temperature detection equipment, and in particular relates to a non-contact temperature detection device. Background Art

[0002] The weak link of mouth protection engineering is also one of the keys to protection. With the development of weapons, the threats faced by mouth protection equipment and facilities are increasing day by day. The destructive effects of weapons include shock waves, shrapnel, harmful gases, high-temperature gases, etc. In the scientific research and application process of mouth protection engineering equipment and facilities, the need to measure their surface temperature has become increasingly prominent. There are two main existing measurement methods. One is contact measurement. This method mainly uses thermocouples to sense temperature, but the sensor affects the daily use of equipment and facilities; the other is non-contact measurement. This method mainly uses infrared temperature sensors to sense temperature. The detection device of the infrared temperature sensor receives the radiation energy of the object being measured, causing the temperature to rise, and then changes the performance of a column in the sensor with temperature. Detect the change of one of the properties and convert it into the temperature value of the object being measured. Generally, in order to reduce the measurement error, no obstacles can be set between the detection device of the infrared temperature sensor and the object being measured, so that the infrared rays radiated by the object being measured can pass through the air and directly irradiate the detection device of the infrared temperature sensor. In addition, when the shock wave generated by the explosion propagates in the air medium, it will directly impact the detection device of the infrared temperature sensor, causing damage to the infrared temperature sensor. Therefore, it is necessary to develop a non-contact temperature detection device that can withstand the overpressure of explosion shock waves. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0004] In view of this, an object of the present invention is to provide a non-contact temperature detection device.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the present invention provides a non-contact temperature detection device, including: a fixed shell, the interior of the fixed shell is hollow; a protective cover, connected to the fixed shell, the interior of the protective cover is hollow and communicated with the interior of the fixed shell, and a through hole is provided on an end surface of the protective cover away from the fixed shell; an infrared temperature sensor, arranged in the fixed shell, and the detection device of the infrared temperature sensor is arranged toward the through hole; a plurality of elastic parts, arranged on the inner wall of the protective cover; wherein a channel for infrared rays to pass through is formed between the through hole and the detection device of the infrared temperature sensor, and the elastic parts are located outside the channel.

[0006] Furthermore, the plurality of elastic members are divided into a plurality of groups, each group having a plurality of elastic members, the plurality of elastic members in each group are distributed in a circular array around the axis of the channel in the protective sleeve, and the plurality of groups of elastic members are spaced apart along the axial direction of the channel.

[0007] Furthermore, the projections of any two groups of elastic members along the axial direction of the channel do not completely overlap.

[0008] Furthermore, a plurality of elastic members are distributed in the protective sleeve in a spiral shape around the axis of the channel.

[0009] Furthermore, the elastic member is in sheet shape, extending from the inner wall of the protective sleeve toward the channel; the material of the elastic member is a metal alloy material, preferably steel.

[0010] Furthermore, the non-contact temperature detection device further includes: a plurality of support rings, the outer ring surface of the support ring is connected to the inner wall of the fixed shell, and the inner ring surface is connected to the infrared temperature sensor. A data acquisition device is arranged outside the fixed shell, and the data acquisition device is electrically connected to the infrared temperature sensor through a shielded cable.

[0011] Furthermore, the fixed shell and the protective sleeve are tubular; wherein, the outer wall of the fixed shell is provided with an external thread, and the inner wall of the protective sleeve is provided with an internal thread matching the external thread; or the inner wall of the fixed shell is provided with an internal thread, and the outer wall of the protective sleeve is provided with an external thread matching the internal thread.

[0012] Furthermore, the extending direction of the elastic member is perpendicular to the axis of the channel.

[0013] Furthermore, the thickness of the elastic member ranges from 0.1 to 5 mm; the diameter of the through hole ranges from 10 to 12 mm.

[0014] Furthermore, the elastic member is in a whisker shape; the material of the elastic member is a metal alloy material, preferably steel.

[0015] The technical solution provided by the embodiment of the present invention has the beneficial effect of: being able to weaken the effect of the explosion shock wave and preventing the front of the infrared temperature sensor from being damaged by the shock wave. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of a non-contact temperature detection device according to an embodiment of the present invention is shown;

[0017] Figure 2 A schematic diagram showing the structure of a protective cover and an elastic member according to an embodiment of the present invention is shown;

[0018] Figure 3 A schematic diagram showing the structure of a protective cover and an elastic member according to an embodiment of the present invention is shown;

[0019] Figure 4 A schematic diagram showing the structure of a protective cover and an elastic member according to an embodiment of the present invention is shown;

[0020] Figure 5A schematic structural diagram of a protective cover and an elastic member according to an embodiment of the present invention is shown.

[0021] The symbols in the figure are explained as follows:

[0022] 10 data acquisition equipment, 11 shielded cable, 20 infrared temperature sensor, 30 fixed housing, 31 sealed back cover, 32 support ring, 40 protective cover, 41 through hole, 42 channel, 50 elastic member, 51 steel wing, 52 steel wire. DETAILED DESCRIPTION

[0023] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention and their beneficial effects will be further described in detail below with reference to the accompanying drawings.

[0024] like Figure 1 and Figure 2 As shown, one embodiment of the present invention provides a non-contact temperature detection device.

[0025] The non-contact temperature detection device includes: a fixed shell 30, an infrared temperature sensor 20, a protective cover 40 and a plurality of elastic members 50. Specifically, the interior of the fixed shell 30 is hollow, the interior of the fixed shell 30 is used to place the infrared temperature sensor 20, the interior of the protective cover 40 is hollow, one end of the protective cover 40 is connected to one end of the fixed shell 30, so that the internal space of the protective cover 40 is communicated with the detection device of the infrared temperature sensor 20, a through hole 41 is provided on the end surface of the protective cover 40 away from the fixed shell 30, the detection device of the infrared temperature sensor 20 is arranged toward the through hole 41, and a channel 42 for infrared rays to pass through is formed between the through hole 41 and the detection device of the infrared temperature sensor 20, so that the infrared rays radiated by the external object pass through the through hole 41, and then pass through the channel 42 of the internal space of the protective cover 40 to irradiate the detection device of the infrared temperature sensor 20, so as to measure the temperature of the external object; the elastic member 50 is provided on the inner wall of the protective cover 40, and the elastic member 50 is located outside the channel 42.

[0026] In detail, the protective cover 40 is tubular, and the inner space of the protective cover 40 is divided into a channel 41 and an installation space from the axis of the protective cover 40 to the inner wall of the protective cover 40 , and the elastic member 50 is installed in the installation space.

[0027] It should be noted that the explosion shock wave has both transverse waves and longitudinal waves. The longitudinal waves are caused by the air compression caused by the explosion, and the transverse waves are caused by the airflow and the vibration of the earth. When the shock wave in the air propagates to the non-contact temperature detection device, it first passes through the through hole 41, and then passes through the internal space of the protective cover 40 before it is transmitted to the detection device of the infrared temperature sensor 20. In this process, the shock wave in the air first passes through the through hole 41, and the through hole 41 is set to a small circular hole opposite to the detection device, so that the shock wave produces a diffraction phenomenon when passing through the through hole 41, that is, the shock wave continues to propagate inside the protective cover 40 through scattering. After the shock wave is scattered and reflected, the pressure of the shock wave will be dispersed, thereby weakening the pressure of the shock wave propagating in the channel 42. At the same time, the elastic member 50 arranged on the inner wall of the protective cover 40 hinders the propagation of the air shock wave. The air shock wave causes the elastic member 50 to vibrate to a certain extent, thereby converting the kinetic energy of the propagation of the air shock wave into the mechanical energy of the vibration of the elastic member 50, thereby weakening the impact force of the air shock wave. After being weakened by multiple elastic members 50, the impact force of the air shock wave is greatly reduced, thereby reducing the impact of the air shock wave on the detection device of the infrared temperature sensor 20, improving the ability of the non-contact temperature detection device to withstand the overpressure of the explosion shock wave, and avoiding the front of the infrared temperature sensor 20 from being damaged by the shock wave.

[0028] Furthermore, a plurality of elastic members 50 are divided into a plurality of groups, each group having a plurality of elastic members 50, and the plurality of elastic members 50 in each group are distributed in a circular array around the axis of the channel 42 in the protective cover 40, and the plurality of groups of elastic members 50 are arranged at intervals along the axial direction of the channel 42. Specifically, each group of elastic members 50 forms a barrier for weakening the air shock wave. When the shock wave passes through each group of elastic members 50, on the one hand, the shock wave will diffract again when passing through the gaps between different elastic members 50, so as to weaken the impact pressure of the shock wave propagating in the channel 42 layer by layer. On the other hand, after multiple diffractions, the shock wave will fully contact with each group of elastic members 50, so as to fully convert the kinetic energy of the propagation of the air shock wave into the mechanical energy of the vibration of the elastic member 50. After the shock wave passes through all the elastic members 50, the impact of the shock wave on the infrared temperature sensor 20 is minimized, thereby weakening the overpressure impact of the shock wave on the infrared temperature sensor 20.

[0029] In a specific embodiment, Figure 3 As shown, the projections of any two groups of elastic members 50 along the axial direction of the channel 42 do not completely overlap, that is, along the axial direction of the channel 42, multiple groups of elastic members 50 are staggered with each other, so that the air shock wave is blocked by the next group of elastic members 50 after passing through the gaps between different elastic members 50 of each group of elastic members 50, thereby increasing the contact area between the air shock wave and the elastic members 50 and improving the effect of the elastic members 50 in weakening the air shock wave.

[0030] Furthermore, the axis of the elastic member 50 is perpendicular to the axis of the channel 42 , so as to increase the contact area between the air shock wave and the elastic member 50 , thereby improving the effect of the elastic member 50 in weakening the air shock wave.

[0031] Alternatively, if Figure 5 As shown, a plurality of elastic members 50 are distributed in the protective sleeve 40 in a spiral shape around the axis of the channel 42. That is, the elastic members 50 are in a spiral ladder shape with the axis of the channel 42 as the center line, and each elastic member 50 has a certain gap along the axial direction of the channel 42, so that each elastic member 50 is on a different plane, and along the radial direction of the channel 42, any two adjacent elastic members 50 are staggered with each other, so that when the shock wave is transmitted in the channel 42, it is weakened layer by layer through each elastic member 50, so as to reduce the impact pressure on the infrared temperature sensor 20, that is, through the irregular arrangement of the elastic members 50, the resistance of the channel 42 to the shock wave is increased, and the wave absorbing effect of the elastic members 50 is increased.

[0032] In a specific embodiment, Figure 1 and Figure 2 As shown, the elastic member 50 is a sheet-shaped steel wing 51, and the multiple steel wing pieces 51 are divided into 4 groups, with the number of steel wing pieces 51 in each group being 5. The 5 steel wing pieces 51 in each group are distributed in a circular array around the axis of the channel 42, and the four groups of steel wing pieces 51 are spaced apart along the axial direction of the channel 42. Each group of steel fins 51 forms a barrier to weaken the air shock wave. When the shock wave passes through each group of steel fins 51, on the one hand, the shock wave will diffract again when passing through the gaps between different steel fins 51, so as to gradually weaken the impact force of the shock wave propagating in the channel 42. On the other hand, after multiple diffractions, the shock wave will fully contact with each group of steel fins 51, so as to fully convert the kinetic energy of the propagation of the air shock wave into the mechanical energy of the vibration of the steel fins 51. After the shock wave passes through all the steel fins 51, the impact of the shock wave on the infrared temperature sensor 20 is minimized, thereby weakening the overpressure impact of the shock wave on the infrared temperature sensor 20 and preventing the infrared temperature sensor 20 from being damaged by the shock wave on the front side.

[0033] The thickness of the steel fin 51 ranges from 0.1 to 5 mm, wherein the thickness of the steel fin 51 is preferably 2 to 5 mm. Understandably, the thickness of the steel fin 51 is related to the overall size of the non-contact temperature detection device, and when the thickness of the steel fin 51 is as small as possible (e.g., 0.1 mm, 0.2 mm), as many steel fins 51 as possible can be arranged in the limited internal space of the protective cover 40 to improve the wave-absorbing effect of the steel fin 51.

[0034] The aperture of the through hole 41 ranges from 10 to 12 mm. The aperture of the through hole 41 corresponds to the size of the detection device of the infrared temperature sensor 20 to ensure that the detection device can obtain enough infrared rays emitted by the detected object to ensure measurement accuracy.

[0035] In another specific embodiment, Figure 3 As shown, the elastic member 50 is a sheet-shaped steel wing 51, and the multiple steel wing sheets 51 are divided into 4 groups, and the number of steel wing sheets 51 in each group is 5. The 5 steel wing sheets 51 in each group are distributed in a circular array around the axis of the channel 42, and along the axial direction of the channel 42, the four groups of steel wing sheets 51 are respectively spaced apart, and the four groups of steel wing sheets 51 are staggered with each other.

[0036] In another specific embodiment, Figure 4 As shown, the elastic member 50 is a whisker-shaped steel wire 52, and the plurality of steel wires 52 are divided into four groups. The steel wires 52 in each group are distributed in a circular array around the axis of the channel 42, and the four groups of steel wires 52 are arranged at intervals along the axis direction of the channel 42. Each group of steel wires 52 forms a barrier to weaken the air shock wave. When the shock wave passes through each group of steel wires 52, on the one hand, the shock wave will diffract again when passing through the gaps between different steel wires 52, so as to gradually weaken the impact force of the shock wave propagating in the channel 42. On the other hand, after multiple diffractions, the shock wave fully contacts each group of steel wires 52, fully converting the kinetic energy of the air shock wave propagation into the mechanical energy of the steel wire 52 vibration. After the shock wave passes through all the steel wires 52, the impact of the shock wave on the infrared temperature sensor 20 is reduced to a minimum, thereby weakening the overpressure impact of the shock wave on the infrared temperature sensor 20.

[0037] Furthermore, if Figure 1 As shown, the non-contact temperature detection device further includes: a plurality of support rings 32, the outer ring surface of the support ring 32 is connected to the inner wall of the fixed shell 30, and the inner ring surface is connected to the infrared temperature sensor 20. Specifically, the support ring 32 is plate-shaped, and two support rings 32 are respectively connected to different positions of the infrared temperature sensor to indirectly fix the infrared temperature sensor 20 inside the fixed shell 30. The fixed shell 30 reduces the vibration interference of the explosion shock wave on the temperature sensor to protect the infrared temperature sensor 20 arranged inside the fixed shell 30.

[0038] Furthermore, if Figure 1 As shown, the non-contact temperature detection device also includes: a data acquisition device 10, which is arranged outside the fixed shell 30, and a sealed back cover 31 is provided at the other end of the fixed shell 30. The shielded cable 11 passes through the sealed back cover 31 to connect the data acquisition device 10 and the infrared temperature sensor 20 respectively, so that the data acquisition device 10 is electrically connected to the infrared temperature sensor 20. The data acquisition device 10 realizes temperature data recording and storage.

[0039] Furthermore, the fixed shell 30 and the protective cover 40 are tubular; the outer wall of the fixed shell 30 is provided with an external thread, the inner wall of the protective cover 40 is provided with an internal thread matching the external thread, and the fixed shell 30 and the protective cover 40 are connected by threads to facilitate the installation and disassembly of the non-contact temperature detection device; or the inner wall of the fixed shell 30 is provided with an internal thread, and the outer wall of the protective cover 40 is provided with an external thread matching the internal thread, so that the fixed shell 30 and the protective cover 40 are connected by threads.

[0040] The fixed shell 30 can withstand the explosion shock wave load below 5Mpa, and realizes the installation, fixing and protection of the temperature sensor. The protective cover 40 can withstand the explosion shock wave load below 5Mpa, and the steel wing 51 can weaken the shock wave. Under the action of the explosion shock wave, the detection device can measure and monitor the temperature of components such as steel and concrete in a non-contact manner.

[0041] The beneficial effects of the present invention are as follows: the non-contact temperature detection device proposed by the present invention can weaken the effect of explosion shock waves and prevent the front of the infrared temperature sensor from being damaged by the shock wave.

[0042] In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “front” and “back” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the present invention.

[0044] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation 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.

[0045] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A non-contact temperature detection device, characterized in that: include: A fixed shell, wherein the interior of the fixed shell is hollow; A protective sleeve connected to the fixed shell, wherein the interior of the protective sleeve is hollow and communicates with the interior of the fixed shell, and a through hole is provided on an end surface of the protective sleeve away from the fixed shell; An infrared temperature sensor is disposed in the fixed housing, and a detection device of the infrared temperature sensor is disposed toward the through hole; A plurality of elastic members, arranged on the inner wall of the protective sleeve; Wherein, a channel for infrared rays to pass through is formed between the through hole and the detection device of the infrared temperature sensor, and the elastic member is located outside the channel.

2. The non-contact temperature detection device according to claim 1, characterized in that: The plurality of elastic members are divided into a plurality of groups, each group having a plurality of elastic members, the plurality of elastic members in each group are distributed in the protective sleeve in a circular array around the axis of the channel, and the plurality of groups of elastic members are spaced apart along the axial direction of the channel.

3. The non-contact temperature detection device according to claim 2, characterized in that: The projections of any two groups of the elastic members along the axial direction of the channel do not completely overlap.

4. The non-contact temperature detection device according to claim 1, characterized in that: A plurality of elastic members are distributed in the protective sleeve in a spiral shape around the axis of the channel.

5. The non-contact temperature detection device according to any one of claims 2 to 4, characterized in that: The elastic member is in sheet shape and extends from the inner wall of the protective sleeve toward the channel; The elastic member is made of metal alloy material.

6. The non-contact temperature detection device according to claim 5, characterized in that: The elastic member is made of steel.

7. The non-contact temperature detection device according to claim 1, characterized in that: Also includes: A plurality of support rings, wherein the outer ring surface of the support ring is connected to the inner wall of the fixed shell, and the inner ring surface is connected to the infrared temperature sensor; The data acquisition device is arranged outside the fixed housing, and the data acquisition device is electrically connected to the infrared temperature sensor through a shielded cable.

8. The non-contact temperature detection device according to claim 1, characterized in that: The fixed shell and the protective cover are tubular; Wherein, the outer wall of the fixed shell is provided with an external thread, and the inner wall of the protective sleeve is provided with an internal thread matching the external thread; or the inner wall of the fixed shell is provided with an internal thread, and the outer wall of the protective sleeve is provided with an external thread matching the internal thread.

9. The non-contact temperature detection device according to claim 5, characterized in that: The extending direction of the elastic member is perpendicular to the axis of the channel.

10. The non-contact temperature detection device according to claim 5, characterized in that: The thickness of the elastic member ranges from 0.1 to 5 mm; The aperture of the through hole ranges from 10 to 12 mm.

11. The non-contact temperature detection device according to any one of claims 2 to 4, characterized in that: The elastic member is in the shape of whiskers; The elastic member is made of metal alloy material.

12. The non-contact temperature detection device according to claim 11, characterized in that: The elastic member is made of steel.

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