Temperature measurement probe armor and temperature sensor

Abstract

The invention discloses a temperature measurement probe armor and a temperature sensor. The temperature measuring probe armor comprises a shell, an upper cover and a probe containing piece. An accommodating space is formed in the shell; the upper cover is arranged at one end of the shell; a containing hole is formed in the probe containing piece in the axial direction of the probe containing piece and used for containing a temperature measuring probe; one part of the probe accommodating part is arranged in the accommodating space, and the other part of the probe accommodating part extends out of the shell; wherein one end, extending out of the shell, of the probe accommodating piece is provided with a detection part; the detection part is provided with one or more flow guide holes transversely penetrating through the detection part, and the flow guide holes are not communicated with the containing hole. The armor of the temperature measuring probe is provided with the diversion hole, so that the heat exchange is faster, and the temperature measuring probe can measure the temperature more quickly and accurately; and the sealing performance is improved, so that liquid can be prevented from entering the armoring of the temperature measuring probe.

Description

Technical Field

[0001] The invention belongs to the technical field of sensors, and in particular relates to a temperature measuring probe armor and a temperature sensor. Background Art

[0002] The contact temperature probe can directly indicate the temperature of the measured fluid through heat conduction, and its measurement accuracy is relatively high. Within a certain temperature range, the temperature probe can even measure the temperature of the fluid inside the product. At present, the temperature probes on the market are basically encapsulated with epoxy resin, mainly using epoxy resin to seal the temperature probe. Due to its structural characteristics and different processing techniques, the degree of heat transfer varies. The more materials added to the surface of the temperature probe, the more complicated the process, and the worse the heat transfer effect.

[0003] Since the contact temperature probe needs to be in contact with the fluid, when the measured fluid medium is corrosive, long-term contact temperature measurement will cause the temperature probe to fail or contaminants to be transferred to the inside of the measured fluid. The temperature probe armor is a product made of anti-corrosion, high-purity clean materials, wrapped on the outside of the temperature probe to prevent the temperature probe from being corroded by corrosive fluids and affecting the cleanliness of the entire fluid system. The temperature probe armor currently on the market has problems such as slow temperature detection response speed, reduced detection accuracy due to the thick armor thickness due to permeability, and uneven temperature inside the detected fluid medium during use.

[0004] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the invention and should not be regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the invention

[0005] The object of the present invention is to provide a temperature measuring probe armor, which has a faster temperature measuring speed, a more accurate temperature measuring speed and a better sealing performance.

[0006] In order to achieve the above-mentioned purpose, a technical solution provided by a specific embodiment of the present invention is as follows: a temperature probe armor, comprising: a shell, an upper cover and a probe accommodating member. The shell has an accommodating space inside; the upper cover is arranged at one end of the shell; the probe accommodating member is provided with an accommodating hole along its own axial direction for accommodating the temperature measuring probe; a part of the probe accommodating member is arranged in the accommodating space and another part extends out of the shell; wherein, the end of the probe accommodating member extending out of the shell has a detection part; the detection part is provided with one or more guide holes that penetrate the detection part horizontally, and the guide holes are not connected to the accommodating hole.

[0007] In one or more embodiments of the present invention, an annular flange is circumferentially provided at one end of the probe accommodating member, and the shape of the contact surface between the annular flange and the shell matches.

[0008] In one or more embodiments of the present invention, a safety gap is provided between the outer edge of the annular flange and the inner wall of the shell; and the distance of the safety gap is between 0.55 mm and 2 mm.

[0009] In one or more embodiments of the present invention, the annular flange is arranged obliquely upward from the probe accommodating member toward the upper cover; the accommodating space includes a first accommodating section and a second accommodating section, the diameter of the second accommodating section is smaller than the diameter of the first accommodating section, and the junction of the first accommodating section and the second accommodating section has a tapered connecting slope, the inclination of the annular flange is the same as the inclination of the connecting slope; and the annular flange abuts against the connecting slope, so that the probe accommodating member is partially located in the second accommodating section.

[0010] In one or more embodiments of the present invention, a sealing member is disposed between an outer wall of the probe accommodating member and an inner wall of the second accommodating section.

[0011] In one or more embodiments of the present invention, the receiving hole extends to the detection part and is closed at the end of the detection part, and the detection part includes: a heat exchange part and two guide parts. The temperature measuring probe is accommodated in the heat exchange part; the two guide parts are arranged on both sides of the heat exchange part; and the guide hole is opened on the guide part.

[0012] In one or more embodiments of the present invention, the plurality of guide holes are symmetrically arranged on the two guide portions, and the guide holes are arranged at intervals along the length direction of the guide portions.

[0013] In one or more embodiments of the present invention, the guide portion has a vertical extension section and an inclined extension section, and the inclined extension section gradually approaches the heat exchange portion from top to bottom and forms a trapezoidal structure with an end portion of the heat exchange portion.

[0014] In one or more embodiments of the present invention, the guide hole is selected from one or more of a circular hole and a waist-shaped hole; and / or the wall thickness of the probe holder is between 0.5 mm and 2 mm.

[0015] Compared with the prior art, the temperature probe armor of the present invention is provided with a flow guide hole at the detection part, so that the fluid can exchange heat with the detection part more quickly, making the temperature measurement of the temperature probe faster and more accurate; on the other hand, the flow guide hole prevents the liquid from overflowing upward into the temperature probe armor and causing damage to the related electronic components of the temperature probe. The probe holder is provided with an annular flange extending obliquely, which can further prevent the liquid from entering the interior of the temperature probe armor and improve the sealing of the armor. In addition, the trapezoidal structure of the detection part can reduce the pressure on itself, and the detection part can be thinner, which is more conducive to temperature measurement.

[0016] Another specific embodiment of the present invention provides a temperature sensor, which includes the temperature measuring probe armor and the temperature measuring probe assembly as described above. The temperature measuring probe assembly is arranged in the temperature measuring probe armor.

[0017] Compared with the prior art, the temperature sensor of the present invention has faster heat conduction, more accurate temperature measurement, higher sealing performance, and it is difficult for the liquid to be measured to flow back into the temperature sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A three-dimensional diagram of a temperature measuring probe armor according to an embodiment of the present invention;

[0020] Figure 2 It is a front view of the armor of the temperature measuring probe according to one embodiment of the present invention;

[0021] Figure 3 for Figure 2 Section view along the AA axis;

[0022] Figure 4 is a schematic diagram of a detection unit according to an embodiment of the present invention;

[0023] Figure 5 is a schematic diagram of a detection unit according to another embodiment of the present invention;

[0024] Figure 6 FIG. 4 is a schematic diagram of a detection unit according to another embodiment of the present invention.

[0025] Description of main reference numerals:

[0026] 1-shell, 11-accommodating space, 12-first accommodating section, 13-second accommodating section, 14-connecting slope, 2-upper cover, 3-probe accommodating member, 31-detection part, 311-flow guide hole, 312-heat exchange part, 313-flow guide part, 3121-vertical extension section, 3122-inclined extension section, 32-annular flange, 33-safety gap, 34-accommodating hole, 4-sealing nut, 5-sealing member, 6-temperature measuring probe, A-temperature measuring probe armor, B-temperature measuring probe assembly. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0028] like Figure 1-3 As shown, a temperature probe armor A in one embodiment of the present invention comprises a shell 1, an upper cover 2, and a probe accommodating member 3. The shell 1 has an accommodating space 11 inside. The upper cover 2 is arranged at one end of the shell 1, and together with the shell 1 forms the accommodating space 11. The probe accommodating member 3 is provided with an accommodating hole 34 along its axial direction for accommodating the temperature probe 6 and its related wires, and a part of the probe accommodating member 3 is arranged in the accommodating space 11 and another part extends out of the shell 1.

[0029] The end of the probe receiving member 3 extending out of the housing 1 has a detection portion 31. The detection portion 31 is provided with one or more flow guide holes 311 that penetrate the detection portion 311 transversely. The flow guide holes 311 are not connected to the accommodation hole 31, and the liquid to be measured can pass through the flow guide holes 311. In this article, the flow guide hole 311 transversely penetrates the detection portion 311, which means that the axial direction of the flow guide hole 311 is not parallel to the axial direction of the accommodation hole 34, but has a certain angle, preferably 90 degrees.

[0030] During use of the temperature probe armor A, the temperature probe 6 is placed in the receiving hole 34 and arranged in the detection part 31. The entire temperature probe armor A is fixed on the pipeline, and the detection part 31 extends into the pipeline substantially perpendicular to the water flow direction and contacts the liquid to be measured in the pipeline. The liquid to be measured exchanges heat with the detection part 31 at the detection part 31, and the detection part 31 transfers heat to the temperature probe 6, thereby realizing the temperature measurement of the liquid to be measured.

[0031] In the above embodiment, the temperature probe armor A is provided with a guide hole 311 at the detection part 31. The axial direction of the guide hole 311 is substantially consistent with the water flow direction, and the liquid to be measured can quickly pass through the guide hole 311, which, on the one hand, can exchange heat with the detection part 31 more quickly, so that the temperature measurement of the temperature probe 6 is faster and more accurate; on the other hand, it can prevent the liquid from accumulating due to a significant reduction in flow velocity at the detection part 31, overflowing upward through the gap into the interior of the temperature probe armor A, and causing damage to the related electronic components of the temperature probe 6.

[0032] In one embodiment, if Figure 3 As shown, one end of the probe receiving member 3 disposed in the accommodation space 11 is provided with an annular flange 32 along the circumferential direction, and the probe receiving member 3 is installed in the accommodation space 11 of the housing 1 through the annular flange 32, and the contact surface shape of the annular flange 32 and the housing 1 matches, so as to achieve close contact between the two. The annular flange 32 matches the contact surface shape of the housing 1 and closely contacts, which can prevent the liquid to be measured from penetrating into the interior of the housing 1 and the probe receiving member 3 from the gap between the housing 1 and the probe receiving member 3.

[0033] For example, the annular flange 32 can be arranged obliquely upward from the probe receiving part 3 to the upper cover 2. The accommodating space 11 includes a first accommodating section 12 and a second accommodating section 13. The probe receiving part 3 is partially accommodated in the second accommodating section 13 through the annular flange 32. The diameter of the second accommodating section 13 is smaller than the diameter of the first accommodating section 12, and a tapered connecting slope 14 is formed at the junction of the first accommodating section 12 and the second accommodating section 13. The inclination of the annular flange 32 is kept consistent with the inclination of the connecting slope 14, so that when the annular flange 32 abuts against the connecting slope 14, the shapes of the contact surfaces of the two are matched, and a close abutment with almost no gap is achieved. On the other hand, the annular flange 32 and the connecting slope 14 are both arranged obliquely upward, so that even if liquid penetrates upward from the gap between the shell 1 and the probe receiving part 3, the liquid will require a greater pressure to pass through the slope, and in actual use, the pressure of the liquid penetrating upward is relatively small, so it is more difficult to enter the interior of the armor.

[0034] In one embodiment, a sealing member 5 may be provided between the outer wall of the probe accommodating member 3 and the inner wall of the second accommodating section 13 to prevent liquid from penetrating between the housing 1 and the probe accommodating member 3. In addition, a sealing nut 4 may be provided on the housing 1 to fasten the sealing member 5 between the housing and the probe accommodating member 4 to further prevent liquid from penetrating.

[0035] Through the above-mentioned structural setting, the sealing of the armor is effectively improved, so that the thickness of the entire armor can be reduced accordingly. The thickness of the probe holder 3 can be controlled at 0.5mm-2mm, and there is no need to increase the thickness of the armor to improve the sealing of the armor. Furthermore, since the thickness of the probe holder 3 is thinner than that of the existing probe holder, the heat exchange can be faster, and the temperature measuring probe 6 can measure the temperature faster and more accurately.

[0036] In one embodiment, a safety gap 33 is provided between the outer edge of the annular flange 32 and the inner wall of the housing 1. The distance of the safety gap 33 is between 0.55 mm and 2 mm. Since the annular flange 32 and the probe holder 3 can be integrally provided, when the probe holder 3 is heated or cooled, the annular flange 32 will be deformed accordingly. The housing 1 is relatively thin, and the safety gap 33 can prevent the annular flange 32 from expanding due to heat and causing deformation of the housing 1. In addition, interference between the housing 1 and the probe holder 3 can be avoided during installation, leaving sufficient installation space.

[0037] In one embodiment, the receiving hole 31 extends to the detection part 31 and is closed at the end of the detection part 31. The detection part 31 includes a heat exchange part 312 and two guide parts 313. The temperature probe 6 is accommodated in the heat exchange part 312. The two guide parts 313 are arranged on both sides of the heat exchange part 312; the guide hole 311 is opened on the guide part 313. Specifically, the heat exchange part 312 wraps the temperature probe 6, because the shell thickness at the heat exchange part 312 is thin, heat exchange can be effectively performed, thereby improving the temperature measurement response speed.

[0038] Specifically, the plurality of flow guide holes 311 are symmetrically arranged on the two flow guide parts 313, and the flow guide holes 311 are arranged at intervals along the length direction of the flow guide parts 313. The number of the flow guide holes 311 can be selectively set according to the flow rate and flow velocity of the liquid to be measured.

[0039] The flow guide hole 311 can be selected from one or more of a circular hole, a waist-shaped hole or other shapes. Figure 4-6 As shown, the guide part 313 may be provided with only circular holes or waist-shaped holes, or may be provided with both circular holes and waist-shaped holes. The liquid to be measured can pass through the guide hole 311 quickly, and exchange heat with the detection part 31 more quickly, so that the temperature measuring probe 6 can measure the temperature more quickly and accurately. At the same time, due to the effect of the guide hole 311, the speed change of the fluid when passing through the detection part 31 is small, the heat transfer is more uniform, and the temperature measurement is more uniform. In addition, the fluid can pass through the guide hole 311 faster, and will not gather and overflow upward and enter the interior of the temperature measuring probe armor A through the gap.

[0040] In one embodiment, the guide portion 313 has a vertical extension section 3121 and an inclined extension section 3122, and the inclined extension section 3122 gradually approaches the heat exchange portion 312 from top to bottom and forms a trapezoidal structure with the end of the heat exchange portion 312. The trapezoidal structure can prevent the fluid from forming eddy currents at the detection portion 31, reduce the pressure on the detection portion 31 at this location, and thus the thickness of the detection portion 31 at this location can be thinner than that of the prior art.

[0041] In summary, the temperature probe armor A is provided with a flow guide hole 311 at the detection part 31, so that the fluid and the detection part 31 can exchange heat more quickly, making the temperature measurement of the temperature probe 6 faster and more accurate; on the other hand, it prevents the liquid from overflowing upward into the temperature probe armor A and causing damage to the related electronic components of the temperature probe 6. The probe holder 3 is provided with an obliquely extending annular flange 32, which can further prevent the liquid from entering the interior of the temperature probe armor A and improve the sealing of the armor. In addition, the trapezoidal structure of the detection part 31 can reduce the pressure on itself, so that the detection part 31 can be thinner and more conducive to temperature measurement.

[0042] A temperature sensor in an embodiment of the present invention comprises: the above-mentioned temperature measuring probe armor A and a temperature measuring probe assembly B. The temperature measuring probe assembly B is arranged in the temperature measuring probe armor A.

[0043] The temperature sensor has faster heat conduction, more accurate temperature measurement, higher sealing performance, and it is difficult for the liquid to be measured to flow back into the temperature sensor.

[0044] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0045] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A temperature probe armor, characterized in that: include: A housing having an accommodating space therein; An upper cover, arranged at one end of the housing; and A probe accommodating member is provided with an accommodating hole along its axial direction for accommodating a temperature measuring probe; a part of the probe accommodating member is arranged in the accommodating space and another part extends out of the housing; The end of the probe accommodating member extending out of the shell has a detection portion, and the detection portion is provided with one or more flow guide holes that penetrate the detection portion transversely, and the flow guide holes are not connected to the accommodating hole.

2. The temperature probe armor according to claim 1 is characterized in that: An annular flange is circumferentially arranged at one end of the probe accommodating member, and the shape of the contact surface of the annular flange and the shell body is matched.

3. The temperature probe armor according to claim 2 is characterized in that: A safety gap is provided between the outer edge of the annular flange and the inner wall of the shell; the distance of the safety gap is between 0.55 mm and 2 mm.

4. The temperature probe armor according to claim 2 is characterized in that: The annular flange is arranged obliquely upward from the probe receiving part toward the upper cover; The accommodating space includes a first accommodating section and a second accommodating section, the diameter of the second accommodating section is smaller than the diameter of the first accommodating section, and a tapered connecting slope is provided at the junction of the first accommodating section and the second accommodating section, and the inclination of the annular flange is the same as the inclination of the connecting slope; and the annular flange abuts against the connecting slope, so that the probe accommodating member is partially located in the second accommodating section.

5. The temperature probe armor according to claim 4 is characterized in that: A sealing member is arranged between the outer wall of the probe accommodating member and the inner wall of the second accommodating section.

6. The temperature probe armor according to claim 1, characterized in that: The receiving hole extends to the detection part and is closed at the end of the detection part, and the detection part includes: a heat exchange portion, wherein the temperature measuring probe is accommodated in the heat exchange portion; and Two guide parts are arranged on both sides of the heat exchange part; and the guide holes are opened on the guide parts.

7. The temperature probe armor according to claim 6, characterized in that: The plurality of guide holes are symmetrically arranged on the two guide parts, and the guide holes are arranged at intervals along the length direction of the guide parts.

8. The temperature probe armor according to claim 6, characterized in that: The guide portion has a vertical extension section and an inclined extension section. The inclined extension section gradually approaches the heat exchange portion from top to bottom and forms a trapezoidal structure with the end of the heat exchange portion.

9. The temperature probe armor according to claim 1, characterized in that: The guide holes are selected from one or more of circular holes and waist-shaped holes; and / or, The wall thickness of the probe holder is between 0.5 mm and 2 mm.

10. A temperature sensor, characterized in that: include: The temperature probe armor according to any one of claims 1 to 9; and The temperature measuring probe assembly is arranged in the temperature measuring probe armor.

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