CN208998935U - Low time delay flame detection sensor - Google Patents
Low time delay flame detection sensor Download PDFInfo
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- CN208998935U CN208998935U CN201821906959.1U CN201821906959U CN208998935U CN 208998935 U CN208998935 U CN 208998935U CN 201821906959 U CN201821906959 U CN 201821906959U CN 208998935 U CN208998935 U CN 208998935U
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- pcb board
- support frame
- time delay
- shell
- low time
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Abstract
The utility model provides a kind of low time delay flame detection sensor, comprising: shell；Connector, connector are connected to one end of shell；Support frame, support frame are connected to the other end of shell, and the outer end face of support frame is recessed mounting groove；Pcb board, pcb board are located in shell, and pcb board is connect with support frame, and pcb board is connect by first lead with connector；Film platinum resistor, film platinum resistor is located in mounting groove, and is connected on the outer end face of support frame by glue, and the second lead of film platinum resistor passes through support frame and connect with pcb board.The utility model structure is simple, and sensor is small and exquisite, facilitates installation, has a wide range of application, and is applicable to a variety of media；The presence or absence of flame is judged by detecting the method for temperature, it is convenient that system is realized, at low cost；Using film platinum resistor, hot coefficient is small, and detection response is fast；It can be used as flame sensor, and can be used as low time delay fast temperature sensor；Standard interface is easily integrated integrated with PLC.
Description
Technical field
The utility model relates to sensor fields, more particularly to a kind of low time delay flame detection sensor.
Background technique
Flame sensor is the sensor for being specifically used to search fire source, is widely used in industrial detection, such as textile industry
Central Plains cotton pipe or more intracorporal fire defectors of storehouse chamber.Existing flame sensor is divided into three kinds according to the light characteristic of flame:
1. pair radiosensitive infra red flame sensor of the longer infrared light of flame medium wavelength, exists mainly for detection of wavelength
Its sensitivity highest when 760nm~1100nm range inner heat source signal, especially wavelength are near 940 nanometers；The disadvantage is that letter
Number power and fire source size, away from fire source distance inversely, a candle is powered as fire source using 5V, 0.3V is away from fire when no fire
4.8V is exported when 20cm, exports 2.9V when away from fiery 50cm；
2, the ultraviolet flame sensor sensitive to the ultraviolet radiation that flame medium wavelength is shorter, work in wavelength 160nm~
290nm is located at solar spectrum blind area, so that detection system is avoided lamp, make system since device works in middle ultraviolet band
The decline of signal detection difficulty, rate of false alarm are greatly reduced；The device itself has " day is blind " characteristic, thus has sensitivity high, tool
There is the characteristics of atomic Testing of Feeble Signals ability and reaction time are exceedingly fast；Monitoring distance: 0~20 meter；
3. detecting ultraviolet/infrared composite flame of the shorter ultraviolet light of flame medium wavelength and longer wavelengths of infrared ray simultaneously
Sensor.One of to use the ultraviolet flame sensor insensitive to sunlight, another channel is using work specific
The infra red flame sensor of Fire Radiation center bin, as the confirmation sensor of fire defector.Its fastest response time is
500ms。
Currently, generalling use spectroscopy mode in the market, this mode cost is very high, and most of weaving burden for users do not rise.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of low time delay flame detection sensors, to overcome existing skill
The drawbacks described above of art.
To achieve the above object, the utility model provides a kind of low time delay flame detection sensor, comprising: shell；Connection
Device, the connector are connected to one end of the shell；Support frame, support frame as described above are connected to the other end of the shell, institute
The outer end face for stating support frame is recessed mounting groove；Pcb board, the pcb board are located in the shell, the pcb board with it is described
Support frame connection, the pcb board are connect by first lead with connector；Film platinum resistor, the film platinum resistor are located at institute
It states in mounting groove, and is connected on the outer end face of support frame as described above by glue, the second lead of the film platinum resistor passes through
Support frame as described above is connect with the pcb board.
Preferably, the mounting groove is in towards the horn-like of outward opening.
Preferably, fairlead is offered on the outer end face, second lead passes through the fairlead and the pcb board
Connection.
Preferably, sealant is coated between the fairlead and second lead.
Preferably, the inner face of support frame as described above is equipped with the interconnecting piece of a pair of of protrusion, and the pcb board and the interconnecting piece are solid
Fixed connection.
Preferably, there are spacing between a pair of connecting portion, the end of the pcb board is plugged between a pair of connecting portion, and
The pcb board is connect with the interconnecting piece by screw.
Preferably, the surface of the film platinum resistor is coated with very thin lacquer type organic coating.
Preferably, support frame as described above is fixedly connected with the shell by sealant.
Preferably, the connector is connect with the outer casing screw, and is sealed by sealant.
Preferably, the shell is made of metal material.
As described above, the utility model relates to low time delay flame detection sensor, have the advantages that practical
New structure is simple, and sensor is small and exquisite, facilitates installation, has a wide range of application, and is applicable to a variety of media；By the side for detecting temperature
Method judges the presence or absence of flame, and it is convenient that system is realized, at low cost；Using film platinum resistor, hot coefficient is small, and detection response is fast；No
It only can be used as flame sensor, and can be used as low time delay fast temperature sensor；Standard interface is easily integrated integrated with PLC.
Detailed description of the invention
Fig. 1 is the explosive view of the utility model.
Fig. 2 is the structural schematic diagram of the utility model.
Fig. 3 is the structural schematic diagram of support frame.
Fig. 4 is the structural schematic diagram of pcb board.
Component label instructions
1 shell
2 connectors
3 support frames
31 outer end faces
32 fairleads
33 interconnecting pieces
331 second connecting holes
4 pcb boards
41 first leads
42 first connecting holes
5 film platinum resistors
51 second leads
Specific embodiment
The embodiments of the present invention is illustrated by particular specific embodiment below, those skilled in the art can be by this
Content disclosed by specification understands other advantages and effect of the utility model easily.
It should be clear that this specification structure depicted in this specification institute accompanying drawings, ratio, size etc., only to cooperate specification to be taken off
The content shown is not intended to limit the utility model enforceable restriction item so that those skilled in the art understands and reads
Part, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size are not influencing
Under the effect of the utility model can be generated and the purpose that can reach, should all still it fall in the revealed technology of the utility model
In the range of appearance can cover.Meanwhile in this specification cited such as "upper", "lower", "left", "right", " centre " term,
It is merely convenient to being illustrated for narration, rather than to limit the enforceable range of the utility model, the change of relativeness or tune
It is whole, under the content of no substantial changes in technology, when being also considered as the enforceable scope of the utility model.
As shown in Figures 1 to 4, the utility model provides a kind of low time delay flame detection sensor, comprising: shell 1, connection
Device 2, support frame 3, pcb board 4 and film platinum resistor 5.The connector 2 and support frame as described above 3 are connected to the both ends of the shell,
The outer end face 31 of support frame as described above 3 is recessed mounting groove and forms the mounting groove for accommodating the film white appliances resistance 5, the pcb board 4
In the shell 1, the pcb board 4 is connect with support frame as described above 3, and the pcb board 4 passes through first lead 41 and connector 2
Connection, is drawn by connector 3, and output flare up fire is used for PLC and other systems, and the film platinum resistor 5 passes through glue
It is connected on the outer end face 31 of support frame as described above 3, the second lead 51 of the film platinum resistor 5 passes through support frame as described above 3 and institute
State the connection of pcb board 4.
As shown in Figure 1 to Figure 3, it is preferable that the mounting groove is horn-like in open ports outwardly, i.e., in the preferred embodiment
Under, the surface of film platinum resistor 5 will not protrude the mounting groove, so on the one hand can protective film platinum resistance 5 do not touched by the external world
It hits, on the other hand especially when measuring gas medium, 5 Rapid contact gas medium of film platinum resistor can allow support frame 3 to thin
The heat affecting of film platinum resistance 5 is preferably minimized.In addition, the shell 1 is made of metal material, to support frame 3 and be fixed on
Film platinum resistor 5 and signal condition pcb board 4 above it are placed in shell 1, the maskable outer entire sensing system of bound pair
Signal interference.
As shown in Figures 1 to 4, it is preferable that fairlead 32 is offered on the outer end face 31, second lead 51 passes through
The fairlead 32 is connect with the pcb board 4, is transferred signals on pcb board 4 by the second lead 51, the fairlead 32
Sealant is coated between second lead 51 to be sealed and insulation processing.
As shown in figures 1 and 3, it is preferable that the inner face of support frame as described above 3 is equipped with the interconnecting piece 33 of a pair of of protrusion, described
Pcb board 4 is fixedly connected with the interconnecting piece 33.In a kind of preferred embodiment, there are spacing between a pair of connecting portion 33, described
The end of pcb board 4 is plugged between a pair of connecting portion 33, and is connect the pcb board 4 with the interconnecting piece 33 by screw,
The i.e. described pcb board 4 is equipped with the first connecting hole 42, and the interconnecting piece 33 is equipped with the second connecting hole 41, and the screw passes through two
The pcb board 4 is connect by the second connecting hole 41 of side and the first connecting hole 42 of centre with the interconnecting piece 33, to make described
Pcb board 4 is reliably connect with support frame as described above 3.Preferably, the flange of the fixed pcb board 4 can also be equipped in the shell 1
(not shown), to make in the pcb board 4 preferably fixation and shown shell 1.
Preferably, the surface of the film platinum resistor 5 is coated with very thin lacquer type organic coating, in the hot coefficient to film platinum resistor 5
Influence is preferably minimized Shi Kerang sensor suitable for a variety of media.
Preferably, support frame as described above 3 is fixedly connected with the shell 1 by sealant, the connector 2 and the shell
1 is threadedly coupled, and is sealed by sealant, to allow sensor to have higher degree of protection.
The utility model signal condition pcb board 2 inputs the temperature signal from film platinum resistor 5, by pcb board 2
Amplifying circuit is converted to the voltage signal vi varied with temperature.Meanwhile vi and vs (vs is the voltage signal according to setting) are in PCB
It is compared in comparison circuit on plate 2, when vi is higher than vs, i.e., actual temperature is higher than set temperature, indicates that temperature is excessively high, is
System output high level signal.Meanwhile voltage signal vi is after further improving, can produce PLC system needs normal voltage or
Current signal.
In conclusion the utility model effectively overcomes various shortcoming in the prior art and has high industrial exploitation value
Value.
The above embodiments are only illustrative of the principle and efficacy of the utility model, and not for limitation, this is practical new
Type.Any person skilled in the art can all carry out above-described embodiment under the spirit and scope without prejudice to the utility model
Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the revealed essence of the utility model
All equivalent modifications or change completed under mind and technical idea, should be covered by the claim of the utility model.
Claims (10)
1. a kind of low time delay flame detection sensor characterized by comprising
Shell (1)；
Connector (2), the connector (2) are connected to one end of the shell (1)；
Support frame (3), support frame as described above (3) are connected to the other end of the shell (1), the outer end face of support frame as described above (3)
(31) it is recessed mounting groove；
Pcb board (4), the pcb board (4) are located in the shell (1), and the pcb board (4) connect with support frame as described above (3), institute
Pcb board (4) are stated to connect by first lead (41) with connector (2)；
Film platinum resistor (5), the film platinum resistor (5) is located in the mounting groove, and is connected to the support by glue
On the outer end face (31) of frame (3), the second lead (51) of the film platinum resistor (5) passes through support frame as described above (3) and the PCB
Plate (4) connection.
2. low time delay flame detection sensor according to claim 1, it is characterised in that: the mounting groove is in towards outward opening
It is horn-like.
3. low time delay flame detection sensor according to claim 2, it is characterised in that: opened up on the outer end face (31)
Have fairlead (32), second lead (51) passes through the fairlead (32) and connect with the pcb board (4).
4. low time delay flame detection sensor according to claim 3, it is characterised in that: the fairlead (32) with it is described
Second lead is coated with sealant between (51).
5. low time delay flame detection sensor according to claim 1, it is characterised in that: the inner end of support frame as described above (3)
Face is equipped with the interconnecting piece (33) of a pair of of protrusion, and the pcb board (4) is fixedly connected with the interconnecting piece (33).
6. low time delay flame detection sensor according to claim 5, it is characterised in that: a pair of connecting portion is stayed between (33)
Have spacing, the end of the pcb board (4) is plugged between a pair of connecting portion (33), and by screw by the pcb board (4) with
Interconnecting piece (33) connection.
7. low time delay flame detection sensor according to claim 1, it is characterised in that: the film platinum resistor (5)
Surface is coated with very thin lacquer type organic coating.
8. low time delay flame detection sensor according to claim 1, it is characterised in that: support frame as described above (3) with it is described
Shell (1) is fixedly connected by sealant.
9. low time delay flame detection sensor according to claim 1, it is characterised in that: the connector (2) with it is described
Shell (1) is threadedly coupled, and is sealed by sealant.
10. low time delay flame detection sensor according to claim 1, it is characterised in that: the shell (1) is by metal material
Material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821906959.1U CN208998935U (en) | 2018-11-19 | 2018-11-19 | Low time delay flame detection sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821906959.1U CN208998935U (en) | 2018-11-19 | 2018-11-19 | Low time delay flame detection sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208998935U true CN208998935U (en) | 2019-06-18 |
Family
ID=66807867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821906959.1U Active CN208998935U (en) | 2018-11-19 | 2018-11-19 | Low time delay flame detection sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208998935U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11635232B2 (en) | 2020-03-26 | 2023-04-25 | Johnson Controls Tyco IP Holdings LLP | HVAC system flame sensor |
-
2018
- 2018-11-19 CN CN201821906959.1U patent/CN208998935U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11635232B2 (en) | 2020-03-26 | 2023-04-25 | Johnson Controls Tyco IP Holdings LLP | HVAC system flame sensor |
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