CN207675325U - The temperature element of small slotting deep accurate measurement can be achieved - Google Patents
The temperature element of small slotting deep accurate measurement can be achieved Download PDFInfo
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- CN207675325U CN207675325U CN201820093059.3U CN201820093059U CN207675325U CN 207675325 U CN207675325 U CN 207675325U CN 201820093059 U CN201820093059 U CN 201820093059U CN 207675325 U CN207675325 U CN 207675325U
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- thermocouple wire
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Abstract
A kind of temperature element that small slotting deep accurate measurement can be achieved, including thermocouple wire, sensor outer housing, it is characterized in that：Sensor outer housing thermometric face is equipped with multiple insulation cable-through holes, and the thermocouple wire is inserted into corresponding insulation cable-through hole respectively from the inside to the outside, and it is naked silk that thermocouple wire, which corresponds to insulation cable-through hole position,；The thermocouple wire hot junction and corresponding sensor outer housing thermometric face are equal or protrude from corresponding sensor outer housing thermometric face, and solder joint one, solder joint two are formed together with the welding of corresponding sensor outer housing thermometric face, sensor outer housing outer surface thermometric is realized by solder joint one, solder joint two.Advantageous effect is：Simple in structure, measurement error is small, thoroughly solves the problems, such as that small slotting deep thermometric occasion measurement result is inaccurate.
Description
Technical field
The sensing element measured the utility model is related to temperature more particularly to a kind of survey that small slotting deep accurate measurement can be achieved
Warm element.
Background technology
Product when temperature element is measuring temperature in industry, temperature element currently on the market generally comprise：Protection
The thermal resistance or thermocouple manage, being arranged in protection pipe.Thermal resistance (Pt100) or thermocouple are placed in protection pipe, will be protected
Pillar, which is placed in thermal field, carries out thermometric.Transmitter module, following Fig. 1 can be coupled for teletransmission or raising measurement accuracy in some occasions
Shown, temperature element is realized in protection pipe to extraneous medium thermometric.This temperature-measurement principle really passes through measurement sensor
The temperature of shell end inner cavity (protects length of tube to realize the measurement to medium temperature outside protection pipe for small slotting deep protection pipe
＜ 300mm) when, the outer medium temperature of temperature ≠ protection pipe of tube cavity is protected, there is very big error, such as table 1.
Table 1
As seen from Table 1, -50 DEG C of+8.7604 DEG C of errors as slotting depth L1=70mm, -11.6077 DEG C of error at 200 DEG C.
Utility model content
The utility model is to solve the above problem of the existing technology, provide it is a kind of it is simple in structure, measurement error is small
The temperature element that small slotting deep accurate measurement can be achieved.
The technical solution of the utility model is：
A kind of temperature element that small slotting deep accurate measurement can be achieved, including thermocouple wire, sensor outer housing, special character
It is：Sensor outer housing thermometric face is equipped with multiple insulation cable-through holes, and the thermocouple wire is inserted into corresponding respectively from the inside to the outside
Insulate cable-through hole, and it is naked silk that thermocouple wire, which corresponds to insulation cable-through hole position,；The thermocouple wire hot junction and corresponding sensor
Shell thermometric face outer surface is equal or protrudes from corresponding sensor outer housing thermometric face outer surface, and with corresponding sensor outer housing
Thermometric face outer surface is welded together to form solder joint one, solder joint two, and sensor outer housing outer surface is realized by solder joint one, solder joint two
Thermometric.
Further preferably, sensor outer housing thermometric face is located at sensor outer housing head, and in sensor outer housing side wall
Outer surface is equipped with thermal-arrest fin, to improve sensor outer housing inner cavity temperature, to reduce because of sensor outer housing and extraneous medium heat
Measurement error caused by exchange effect.
Further preferably, the insulation cable-through hole quantity is equal with thermocouple wire radical.
Further preferably, the thermocouple wire is naked thermo wires.
Further preferably, the thermocouple wire is for cable-type thermocouple and by core and the insulating materials being arranged on core
Layer is constituted, and the core is multiply or sub-thread thermocouple.
Further preferably, it is coil-shape that the thermocouple wire, which is located at enclosure interior position, and insulating cement embedding is used in combination, can be further
Reduce measurement error.
Further preferably, the thermocouple wire hot junction protrudes corresponding sensor outer housing thermometric face 1-10mm, improves and measures
Precision.
Further preferably, the solder joint one, two surface of solder joint setting stainless steel surface layer, preferably protect solder joint.
Further preferably, the insulation cable-through hole is constituted by the ceramics pipe outer on insulation cable-through hole inner wall is arranged.
The utility model has the beneficial effects that：It is simple in structure, due to being equipped with insulation cable-through hole in sensor outer housing thermometric face,
The corresponding insulation cable-through hole position of the thermocouple wire is naked silk and is inserted into ceramics pipe outer, the hot junction of thermocouple wire from the inside to the outside
It is welded together to form solder joint one, solder joint two with sensor outer housing thermometric face outer surface, sensing is realized by solder joint one, solder joint two
Device outer surface of outer cover thermometric, according to middle conductor law, is equivalent to middle conductor not when solder joint one, two temperature of solder joint are consistent
In the presence of, i.e., the measurement to medium temperature outside sensor outer housing is realized by measurement sensor shell thermometric face hull-skin temperature,
Measurement error is small, it can be achieved that accurate measurement, thoroughly solves the problems, such as inaccurate in small slotting deep thermometric occasion measurement result.
Description of the drawings
Fig. 1 is that temperature element is mounted on the interior realization of sensor outer housing to outside medium temperature-measurement principle figure；
Fig. 2 is the structural schematic diagram of the utility model corresponding embodiment 1；
Fig. 3 is the structural schematic diagram of the utility model corresponding embodiment 2；
Fig. 4 is the structural schematic diagram of the utility model corresponding embodiment 3；
Fig. 5 is the measuring principle figure of the utility model embodiment 3；
Fig. 6 is the structural schematic diagram of the utility model corresponding embodiment 4；
Fig. 7 is the structural schematic diagram of the utility model corresponding embodiment 5.
In figure：1- thermocouple wires, 2- sensor outer housings, 3- ceramics pipe outers, 4- solder joints one, 5- thermometrics face, 6-
Solder joint two, 7- connecting tubes, 8- transmitter modules, 9- fixing devices, terminal box 10,11- terminal box connecting screws, 12- rings
Oxygen resin, 13- stainless steels surface layer, the naked silks of 101-, 201- insulation cable-through holes, 202- thermal-arrest fins.
Specific implementation mode
Specific embodiment of the utility model is provided below in conjunction with the accompanying drawings.
Embodiment 1
As shown in Fig. 2, the utility model is related to the temperature element that small slotting deep accurate measurement can be achieved, including thermocouple wire
1, stainless steel sensor outer housing 2, the thermocouple wire 1 is two and is naked thermo wires, and 2 head of the sensor outer housing is thermometric face
5 and equipped with two insulation cable-through holes 201, insulation 201 inner wall of cable-through hole on be bonded ceramics pipe outer 3, to make insulated line
It insulate between 201 inner wall of hole and sensor outer housing 1, two thermocouple wires 1 are inserted into corresponding insulation cable-through hole respectively from the inside to the outside
201,1 hot junction of the thermocouple wire protrude corresponding sensor outer housing thermometric face 1-10mm (the present embodiment 5mm), and with biography
The thermometric face 5 of sensor shell 2 forms solder joint 1, solder joint 26 by argon arc welding welding together, real by solder joint one, solder joint two
Existing sensor outer housing outer surface thermometric.
Embodiment 2
As shown in figure 3, the utility model is related to the temperature element that small slotting deep accurate measurement can be achieved, including two thermoelectricity
Thermo wires 1, stainless steel sensor outer housing 2,2 wall outer surface of the sensor outer housing is equipped with thermal-arrest fin 202, to improve sensor
1 inner cavity temperature of shell reduces measurement error.The thermocouple wire 1 is for cable-type thermocouple and by core and winding (or braiding)
Braiding alkali-free glass cotton insulation material layer on core is constituted, and the core is multiply or sub-thread thermocouple.The sensor
2 head of shell is thermometric face 5 and is equipped with two insulation cable-through holes 201, and ceramics pipe outer is bonded on insulation 201 inner wall of cable-through hole
3, to make to insulate between 201 inner wall of insulation cable-through hole and sensor outer housing 1.The corresponding insulation cable-through hole of two thermocouple wires 1
201 positions are naked silk 101 and are inserted into corresponding insulation cable-through hole 201, the hot junction of thermocouple wire 1 and sensor respectively from the inside to the outside
5 outer surface of thermometric face of shell 2 is equal and forms solder joint 1, solder joint 26 together by argon arc welding welding, by solder joint one,
Solder joint two realizes sensor outer housing outer surface thermometric.
Embodiment 3
As shown in Figure 4, Figure 5, the solder joint 1, solder joint 26 protrude from 5 outer surface of thermometric face of sensor outer housing 2,
It is same as Example 2.When measurement, sensor outer housing 2 and connecting tube 7 are welded, fixing device 9 (using screw or flange) with even
7 welding of take over, terminal box connecting screw 11 are welded with connecting tube 7, and terminal box 10 is connect with terminal box connecting screw 11, transmitter
Module 8 and thermocouple wire lead-out wire being connected to form one temperature transmitter.Temperature-measurement principle be by measurement sensor shell outside
The surface temperature of wall realizes the measurement to medium temperature outside sensor outer housing.When solder joint 1,26 temperature of solder joint are consistent, phase
When in middle conductor, there is no (middle conductor law), testing result such as tables 2.
Table 2
By the comparison of table 2 and table 1, equally slotting depth 70mm, same -50 DEG C (+0.0947 DEG C ,+8.7604 DEG C)；Equally
200 DEG C (- 0.3106 DEG C, -11.6077 DEG C).It can be seen that the advantage of the technology of the utility model be solve small slotting deep probe can not
The borders Embarrassing of metering.
Embodiment 4
As shown in fig. 6, it is coil-shape that the thermocouple wire 1, which is located at position in shell 2,12 embedding of epoxy resin is used in combination,
It is same as Example 3, can further decrease measurement error.
Embodiment 5
As shown in fig. 7, covering stainless steel surface layer 13, other and implementation by argon arc welding on (the solder joint 2 6) surface of solder joint 1
Example 1- embodiments 4 are identical.
The above are only specific embodiments of the present invention, is not intended to limit the utility model, for this field
Technical staff for, various modifications and changes may be made to the present invention.Within the spirit and principle of the utility model,
Any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (9)
1. a kind of temperature element that small slotting deep accurate measurement can be achieved, including thermocouple wire, sensor outer housing, it is characterized in that：Institute
It states sensor outer housing thermometric face and is equipped with multiple insulation cable-through holes, the thermocouple wire is inserted into corresponding insulated respectively from the inside to the outside
String holes, and it is naked silk that thermocouple wire, which corresponds to insulation cable-through hole position,；The thermocouple wire hot junction is surveyed with corresponding sensor outer housing
Warm face is equal or protrudes from corresponding sensor outer housing thermometric face, and is formed together with the welding of corresponding sensor outer housing thermometric face
Solder joint one, solder joint two realize sensor outer housing outer surface thermometric by solder joint one, solder joint two.
2. the temperature element according to claim 1 that small slotting deep accurate measurement can be achieved, it is characterized in that：Outside the sensor
Shell thermometric face is located at sensor outer housing head, and the sensor outer housing wall outer surface is equipped with thermal-arrest fin.
3. the temperature element according to claim 1 or 2 that small slotting deep accurate measurement can be achieved, it is characterized in that：Insulated line
Hole number is equal with thermocouple wire radical.
4. the temperature element according to claim 1 or 2 that small slotting deep accurate measurement can be achieved, it is characterized in that：Thermocouple wire
For naked thermo wires.
5. the temperature element according to claim 1 or 2 that small slotting deep accurate measurement can be achieved, it is characterized in that：Thermocouple wire
It is constituted for cable-type thermocouple and by core and the insulation material layer being arranged on core, the core is multiply or sub-thread thermoelectricity
It is even.
6. the temperature element according to claim 5 that small slotting deep accurate measurement can be achieved, it is characterized in that：The thermocouple wire
It is coil-shape positioned at enclosure interior position, insulating cement embedding is used in combination.
7. temperature element according to claim 1 or 2, it is characterized in that：Thermocouple wire hot junction protrudes outside corresponding sensor
Shell thermometric 1~10mm of face.
8. temperature element according to claim 1 or 2, it is characterized in that：Stainless steel watch is arranged in solder joint one, two surface of solder joint
Layer.
9. temperature element according to claim 1 or 2, it is characterized in that：The cable-through hole that insulate is made of ceramics pipe outer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820093059.3U CN207675325U (en) | 2018-01-19 | 2018-01-19 | The temperature element of small slotting deep accurate measurement can be achieved |
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| CN201820093059.3U CN207675325U (en) | 2018-01-19 | 2018-01-19 | The temperature element of small slotting deep accurate measurement can be achieved |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108088580A (en) * | 2018-01-19 | 2018-05-29 | 锦州精微仪表有限公司 | The temperature element of small slotting deep accurate measurement can be achieved |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108088580A (en) * | 2018-01-19 | 2018-05-29 | 锦州精微仪表有限公司 | The temperature element of small slotting deep accurate measurement can be achieved |
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