CN208751745U - High temperature heat-resistant flow sensor - Google Patents
High temperature heat-resistant flow sensor Download PDFInfo
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- CN208751745U CN208751745U CN201821772684.7U CN201821772684U CN208751745U CN 208751745 U CN208751745 U CN 208751745U CN 201821772684 U CN201821772684 U CN 201821772684U CN 208751745 U CN208751745 U CN 208751745U
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- heat sink
- sink body
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Abstract
High temperature heat-resistant flow sensor, belongs to sensor technical field, the utility model be solves the problems, such as existing heat flow transducer there are heat dissipation performances it is poor, export be not sufficiently stable, to continue working performance poor.High temperature heat-resistant flow sensor described in the utility model, thermal sensation piece is mounted in heat sink body upper end, lead connects thermal sensation piece lower end surface, it is drawn by switching, across being nested in porcelain tube among heat sink body, it transfers with binding post is arranged below heat sink body, it is drawn from fixing clamp, heat sink body draws lead by screwing in Binding post/stud below heat sink body, it is drawn from fixing clamp, two leads that fixing clamp is drawn are provided with Upper gasket, are provided with lower gasket between heat sink body lower end surface and fixing clamp as thermocouple the two poles of the earth between heat sink body upper side and sensor housing；Heat sink body side surface is evenly equipped with radiating fin, and sensor housing is cage shell, and side is provided with radiating groove, insulate between heat sink body and sensor housing.The utility model is for measuring propeller jet flames moment heat flow density.
Description
Technical field
The utility model relates to a kind of heat flow transducers, belong to sensor technical field.
Background technique
Currently, the product pushers jet flames moment heat flow density such as measurement guided missile uses heat flow transducer, existing heat
Flow sensor is not accounted in the design phase as shown in Figure 1, shorter using the time of the heat flow transducer measurement aircraft such as rocket
The problem of heat sink body radiates.The major function of heat sink body is to absorb heat to radiate to sensible heat piece, is the key that heat flow transducer portion
Part.When heat sink body heat content adds up to a certain extent, sensor accuracy class decline will lead to, with prolonging for time of measuring
It is long, it will lead to sensor failure.With the raising of the products voyage such as guided missile, to heat flow transducer under high temperature environment for a long time,
The demand of steady operation is also gradually increased, and good, sustainable measurement that there is an urgent need to thermal diffusivities exports stable heat flow transducer.
Utility model content
The utility model aim is that there are heat dissipation performances in order to solve existing heat flow transducer, and poor, output is not sufficiently stable, holds
The problem of continuous working performance difference, provides a kind of high temperature heat-resistant flow sensor.
High temperature heat-resistant flow sensor described in the utility model, it includes thermal sensation piece, lead, Upper gasket, heat sink body, sensor
Shell, porcelain tube, binding post, lower gasket, nut, fixing clamp and Binding post/stud；Thermal sensation piece is mounted in the upper end of heat sink body, thermal sensation piece
Upper surface receive radiant heat flux, the lower end surface of one end connection thermal sensation piece of lead, lead is drawn by switching, across being nested in
Porcelain tube among heat sink body is transferred with the binding post being arranged in below heat sink body, is then drawn from fixing clamp, installs on binding post
There is nut, heat sink body is drawn lead by screwing in the Binding post/stud below heat sink body, then drawn from fixing clamp, and fixing clamp is drawn
The two poles of the earth as thermocouple of two leads, Upper gasket, heat sink body are provided between the upper side and sensor housing of heat sink body
Lower end surface and fixing clamp between be provided with lower gasket；The side of heat sink body is evenly equipped with radiating fin, and sensor housing is cage
Shell, side are provided with radiating groove, insulate between heat sink body and sensor housing.
The advantages of the utility model: the utility model in view of the defects existing in the prior art, proposes a kind of high temperature resistant hot-fluid
Sensor meets the product pushers such as long-time, stably measured guided missile jet flames heat by improving heat sink body heat-sinking capability
The requirement of current density.The heat sink body heat dissipation of the utility model uses natural convection air mode, and heat sink body is designed to cooling fin
Structure with increasing heat radiation area and with cage casing insulation, cage shell can increase air circulation, and comprehensive function can make hot-fluid
The heat and the heat dissipation of heat sink body that sensor sensible heat piece absorbs tend to balance, and guarantee to form stable temperature gradient on sensible heat face,
Realize the lasting of hot-fluid, stably measured.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the heat flow transducer used in the prior art；
Fig. 2 is the structural schematic diagram of high temperature heat-resistant flow sensor described in the utility model；
Fig. 3 is the external structure schematic diagram of high temperature heat-resistant flow sensor described in the utility model.
Specific embodiment
Specific embodiment 1: illustrating present embodiment, high temperature heat-resistant described in present embodiment below with reference to Fig. 2 and Fig. 3
Flow sensor, it includes thermal sensation piece 1, lead 2, Upper gasket 3, heat sink body 4, sensor housing 5, porcelain tube 6, binding post 7, lower gasket
8, nut 9, fixing clamp 10 and Binding post/stud 11；
Thermal sensation piece 1 is mounted in the upper end of heat sink body 4, and the upper surface of thermal sensation piece 1 receives radiant heat flux, and one end of lead 2 connects
The lower end surface of thermal sensation piece 1 is connect, lead 2 is drawn by switching, across the porcelain tube 6 being nested among heat sink body 4, with setting heat sink
The binding post 7 of 4 lower section of body is transferred, and is then drawn from fixing clamp 10, is equipped with nut 9 on binding post 7, heat sink body 4 passes through screw-in
The Binding post/stud 11 of heat sink 4 lower section of body draws lead, then draws from fixing clamp 10, two lead conducts that fixing clamp 10 is drawn
The two poles of the earth of thermocouple, are provided with Upper gasket 3 between the upper side and sensor housing 5 of heat sink body 4, the lower end surface of heat sink body 4 with
Lower gasket 8 is provided between fixing clamp 10；
The side of heat sink body 4 is evenly equipped with radiating fin 12, and sensor housing 5 is cage shell, and side is provided with radiating groove
13, it insulate between heat sink body 4 and sensor housing 5.
In present embodiment, thermal sensation piece 1 receives radiant heat flux, and temperature increases, the heat of thermal sensation piece 1 by with heat sink body 4
Contact site contact the heat to heat sink body 4, when entire sensor is in thermal steady state, the temperature at 1 center of thermal sensation piece is remote
Much higher than peripheral temperature, so that formation temperature is poor on thermal sensation piece 1, then passes through the pyroelectric effect principle of metal, temperature difference is believed
Number it is converted into voltage signal, to obtain heat flow signal.
In present embodiment, Upper gasket 3, lower gasket 8 and fixing clamp 10 play the role of fixed heat sink body 4 and insulation.
In present embodiment, the side of heat sink body 4 is evenly equipped with radiating fin 12, will be hot using natural convection air mode
Heavy body 4 is designed as the structure of cooling fin, with increasing heat radiation area；Also, heat sink body 4 and cage casing insulation, cage shell can
To increase the circulation of air；The heat dissipation of heat and heat sink body 4 that thermal sensation piece 1 can be made to absorb tends to balance, and guarantees in sensible heat face
It is upper to form stable temperature gradient, realize the lasting of hot-fluid, stably measured.
Specific embodiment 2: present embodiment is described further embodiment one, thermal sensation piece 1 is circle, as
Sensitive area.
Specific embodiment 3: illustrating that present embodiment, present embodiment make into one embodiment one below with reference to Fig. 3
Step explanation, the radiating groove 13 of 5 side of sensor housing setting are strip.
Claims (3)
1. high temperature heat-resistant flow sensor, it includes thermal sensation piece (1), lead (2), Upper gasket (3), heat sink body (4), sensor housing
(5), porcelain tube (6), binding post (7), lower gasket (8), nut (9), fixing clamp (10) and Binding post/stud (11)；
Thermal sensation piece (1) is mounted in the upper end of heat sink body (4), and the upper surface of thermal sensation piece (1) receives radiant heat flux, and the one of lead (2)
The lower end surface of end connection thermal sensation piece (1), lead (2) are drawn by switching, across being nested in the intermediate porcelain tube (6) of heat sink body (4),
It transfers with the binding post (7) being arranged below heat sink body (4), is then drawn from fixing clamp (10), binding post is equipped with spiral shell on (7)
Female (9), heat sink body (4) are drawn lead by screwing in the Binding post/stud (11) below heat sink body (4), are then drawn from fixing clamp (10)
Out, the two poles of the earth of two leads that fixing clamp (10) is drawn as thermocouple, upper side and sensor housing (5) of heat sink body (4)
Between be provided with Upper gasket (3), be provided with lower gasket (8) between the lower end surface and fixing clamp (10) of heat sink body (4)；
It is characterized in that, the side of heat sink body (4) is evenly equipped with radiating fin (12), sensor housing (5) is cage shell, side
It is provided with radiating groove (13), insulate between heat sink body (4) and sensor housing (5).
2. high temperature heat-resistant flow sensor according to claim 1, which is characterized in that thermal sensation piece (1) is circle, as sensitivity
Face.
3. high temperature heat-resistant flow sensor according to claim 1, which is characterized in that the setting of sensor housing (5) side
Radiating groove (13) is strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821772684.7U CN208751745U (en) | 2018-10-30 | 2018-10-30 | High temperature heat-resistant flow sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821772684.7U CN208751745U (en) | 2018-10-30 | 2018-10-30 | High temperature heat-resistant flow sensor |
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| Publication Number | Publication Date |
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| CN208751745U true CN208751745U (en) | 2019-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821772684.7U Active CN208751745U (en) | 2018-10-30 | 2018-10-30 | High temperature heat-resistant flow sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109269681A (en) * | 2018-10-30 | 2019-01-25 | 中国电子科技集团公司第四十九研究所 | High temperature heat-resistant flow sensor |
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2018
- 2018-10-30 CN CN201821772684.7U patent/CN208751745U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109269681A (en) * | 2018-10-30 | 2019-01-25 | 中国电子科技集团公司第四十九研究所 | High temperature heat-resistant flow sensor |
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