CN207559553U - A kind of intrinsic safety type guard grating - Google Patents
A kind of intrinsic safety type guard grating Download PDFInfo
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- CN207559553U CN207559553U CN201721487349.8U CN201721487349U CN207559553U CN 207559553 U CN207559553 U CN 207559553U CN 201721487349 U CN201721487349 U CN 201721487349U CN 207559553 U CN207559553 U CN 207559553U
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- guard grating
- water cooling
- alarm
- road
- shell
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Abstract
The utility model belongs to guard grating technical field, specifically propose a kind of intrinsic safety type guard grating, including guard grating ontology and guard grating shell, the upper and lower part of the guard grating shell is equipped with several instrument boards, water cooling road is installed in the guard grating shell, water cooling road includes inlet and outlet, and water outlet is equipped with the condenser jacket for cooling；Guard grating case surface is equipped with thermoelectric unit and alarm, and the thermoelectric unit is electrically connected with alarm；Thermoelectric unit both ends are electrically connected respectively with inlet and outlet, the water inlet is equipped with temperature sensor, alarm includes level-one alarm lamp and secondary alarm lamp, and the alarm is electrically connected with temperature sensor, compared with prior art, by setting spiral helicine water cooling road in the utility model, so as to effectively be cooled down to guard grating ontology, radiate, heat is avoided to be accumulated in guard grating ontology, electronic component is damaged, improves service life and the safety of guard grating ontology.
Description
Technical field
The utility model is related to guard grating technical fields, are concretely related to a kind of intrinsic safety type guard grating.
Background technology
Guard grating is also known as safety holder, and the safe interface of intrinsically safe circuit, it can be two-way between place of safety and hazardous area
Electric signal is transmitted, and energy transfer of the place of safety caused by fault to hazardous area can be limited.It is divided into two major class by the full grid of structure：
For one kind for Zener barrier, it is easy that principle is simple, circuit is realized, cheap, but the defects of because due to its own principle
Its reliability in applying is made to be greatly affected, and limit its scope of application.Isolating safety grid, which employs, will input, is defeated
Go out and circuit structure that power supply is electrically isolated from one another between the parties, while meet the requirement of intrinsic safety type limitation energy.With Zener
Formula is compared safely, and isolating safety grid has the advantages of prominent and more extensive use, although its price is slightly above Zener type peace
Full grid, but consider from design, construction and installation, debugging and maintenance cost, synthesis cost is less than Zener barrier instead.
More demanding engineering site almost employs isolating safety grid as main intrinsic safe explosion-proof instrument bar none, isolated
Gradually instead of Zener barrier, increasingly extensive application has been obtained in safety anti-explosive field for guard grating.
Guard grating is widely used in the explosion-proof industrial instrument front end signal processing for waiting fields, for improving industrial processes certainly
Autocontrol system antijamming capability, Guarantee control system stability and reliability have a very important effect, but current peace
Internal electronic component can generate a large amount of heat to full grid in use, and guard grating shell can not radiate in time, it is easy to
Electronic component inside guard grating is damaged.
Thermoelectric conversion technology is based on Seebeck (Seebeck) effect, by two different thermoelectric materials (p-type and N-type)
One end is connected by excellence conductor Cu, and the other end is then connect with Cu conductors respectively, forms a PN junction, obtains one simply
Thermoelectric conversion component, also referred to as PN thermoelectric units, as shown in the figure.Load resistance is accessed in thermoelectric unit open end, if at this time
In thermoelectric unit one end hot-fluid (QH) flow into, temperature end (i.e. hot junction) is formed, from the other end (QC) lose, form low-temperature end (i.e.
Cold end), then temperature gradient field is set up between thermoelectric unit hot junction and cold end.Thermoelectric unit is internally located at the sky of temperature end
Cave and electronics start to spread to low-temperature end under the driving in temperature field, so as in PN galvanic couple arms both ends formation potential difference, circuit
There will be electric current generation.
Utility model content
Therefore the utility model proposes a kind of intrinsic safety type guard grating, the guard grating for solving current is pacified in use
Full grid shell can not radiate in time, it is easy to the problem of being damaged to the electronic component inside guard grating.
What the technical solution of the utility model was realized in：A kind of intrinsic safety type guard grating, including guard grating ontology and peace
Full grid shell, guard grating ontology are located at guard grating enclosure, and the upper and lower part of the guard grating shell is equipped with several instrument
Dial plate is equipped with water cooling road in the guard grating shell, and in the shape of a spiral, the water cooling road is arranged on outside guard grating in the water cooling road
On the inner wall of shell, full of cold water inside the water cooling road, water cooling road includes inlet and outlet, and the water outlet, which is equipped with, to be used
In the condenser jacket of cooling；The guard grating case surface is equipped with thermoelectric unit and alarm, the thermoelectric unit and alarm electricity
Connection；The thermoelectric unit both ends are electrically connected respectively with inlet and outlet, and the water inlet is equipped with temperature sensor, institute
Alarm is stated to include prompting level-one alarm lamp of the water cooling channel temp more than 50 DEG C and being more than 80 for prompting water cooling channel temp
DEG C secondary alarm lamp, the alarm is electrically connected with temperature sensor.
During specific works, being filled with cold water from water inlet makes to fill cold water inside water cooling road, due to water cooling road in the shape of a spiral, will
It keeps all contacting with water cooling road in guard grating ontology, then starts guard grating ontology and start to work, with guard grating ontology
Continuous firing will generate heat in guard grating ontology, and the hot gas of guard grating body interior is contacted with water cooling road, can be to guard grating sheet
Internal portion cools down, and at the same time, according to heat transfer principle, the cold water in water cooling road is influenced to start to rise by hot gas
Temperature causes water cooling road bulk temperature to rise, since water outlet is equipped with the condenser jacket for cooling, thermoelectric unit both ends respectively with
Inlet and outlet are electrically connected, therefore the water inlet formation temperature end in water cooling road, the water outlet formation low-temperature end in water cooling road, and two
End forms temperature difference, according to thermoelectric conversion technology, it will the intrinsic thermal energy of guard grating is converted into electric energy and is provided for alarm
Power supply.
With the continuous firing of guard grating ontology, the temperature in water cooling road will continue to rise, when rising to 50 DEG C, temperature
High temperature signal is passed to alarm by sensor, and the level-one alarm lamp of alarm lights at this time, and people is reminded to replace in water cooling road
Cold water, when rising to 80 DEG C, the level-one alarm lamp and secondary alarm lamp of alarm light simultaneously, remind people's guard grating sheet
Body temperature superelevation, it is dangerous, it is necessary to take safety measures immediately.
Further, the bottom and top of the guard grating shell are provided with the ventilating duct of several perforation guard grating shells, often
One ventilating duct is inclined ventilating duct from top to bottom, and the spacing between every two adjacent ventilating ducts is equal.
During use, guard grating ontology and guard grating shell are generally both placed in outdoor, when outdoor blows, wind
It can directly radiate directly through ventilating duct to guard grating body interior, ventilating duct can be to avoid for inclined ventilating duct
Some big dusts are blown into guard grating shell during blowing, ensure to improve the stability of work while heat dissipation.
Further, the guard grating outer casing bottom is equipped with blower fan, and the blower fan is being located at bottom ventilation road just
Lower section, the guard grating cover top portion are equipped with blower fan, and the blower fan is located at the surface in top portion ventilation road.
Strengthen air convection using blower fan and blower fan, improve heat dissipation effect, help to form good wind circulating,
Avoid heat build-up.
Further, the both sides of ventilating duct described in each are provided with groove, and dust-proof cushion is connected in groove.Prevent air
In dust enter guard grating body interior influence work, and dust-proof cushion clamping be conveniently replaceable.
Further, the water cooling road is double water cooling road, and cold water is housed in the condenser jacket.Double water cooling road increases
With the contact area of guard grating body interior, while cool water quantity is increased, the effect of water cooling can be improved.
By above disclosure, the beneficial effects of the utility model are：It is spiral helicine by setting in the utility model
Water cooling road so as to effectively be cooled down to guard grating ontology, radiates, heat is avoided to be accumulated in guard grating ontology, to electronics
Element damages, and service life and the safety of guard grating ontology is improved, while using thermoelectric generation technology, by the heat of generation
Electric energy can be converted into and provide power supply for alarm, avoid energy dissipation, and can be effective using the warning function of alarm
Prevent guard grating ontology to generate dangerous since temperature is excessively high.
Description of the drawings
Fig. 1 is a kind of front view of intrinsic safety type guard grating embodiment of the utility model；
Fig. 2 is the partial enlarged view at A in Fig. 1；
Fig. 3 is the circuit diagram of alarm work.
Reference numeral is as follows：
Guard grating shell 1, blower fan 2, blower fan 3, ventilating duct 4, level-one alarm lamp 5, secondary alarm lamp 6, thermoelectric unit
7th, double water cooling road 8, condenser jacket 9, instrument board 10.
Specific embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
It clearly and completely describes, it is clear that the described embodiments are only a part of the embodiments of the utility model rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without creative efforts
All other embodiments obtained shall fall within the protection scope of the present invention.
As shown in Figure 1, Figure 2 and Figure 3, a kind of intrinsic safety type guard grating, including guard grating ontology and guard grating shell 1, safety
Grid ontology is located inside guard grating shell 1, and the upper and lower part of guard grating shell 1 is integrally formed with several instrument boards 10, peace
Double water cooling road 8 is installed in full grid shell 1, in the shape of a spiral, water cooling road is arranged on the interior of guard grating shell 1 in double water cooling road 8
On wall, double 8 inside of water cooling road is full of cold water, and double water cooling road 8 includes inlet and outlet, and water outlet housing is useful for
The condenser jacket 9 of cooling, condenser jacket 9 is interior to be equipped with cold water；The bottom and top of guard grating shell 1 are provided with several perforation guard grating shells
1 ventilating duct 4, each ventilating duct 4 are inclined ventilating duct 4 from top to bottom, between every two adjacent ventilating ducts 4 between
Away from equal, the both sides of ventilating duct 4 are provided with groove, and dust-proof cushion is connected in groove, and 1 bottom of guard grating shell is equipped with blower fan
3, the blower fan 3 is located at the underface in bottom ventilation road 4, and 1 top of guard grating shell is equipped with blower fan 2, the blower fan 2
Positioned at the surface in top portion ventilation road 4.
1 surface of guard grating shell is equipped with thermoelectric unit 7 and alarm, and thermoelectric unit 7 is electrically connected with alarm；Thermoelectricity list
First 7 both ends are electrically connected respectively with inlet and outlet, and water inlet is equipped with temperature sensor, and alarm includes prompting
Level-one alarm lamp 5 of the water cooling channel temp more than 50 DEG C and be more than 80 DEG C of secondary alarm lamp 6 for prompting water cooling channel temp, alarm
Device is electrically connected with temperature sensor.
During work, being filled with cold water from water inlet makes to fill cold water inside double water cooling road 8, since double water cooling road 8 is in spiral shell
Shape is revolved, will keep all contacting with double water cooling road 8 in guard grating ontology, then start guard grating ontology and start to work, with
The continuous firing of guard grating ontology will generate heat in guard grating ontology, and the hot gas of guard grating body interior connects with double water cooling road 8
It touches, can cool down to guard grating body interior, start blower fan 3 and blower fan 2, blower fan 3 dry to ventilating duct 4, inhale
Fan 2 as wind is sucked out together, radiates the hot gas of guard grating body interior.
At the same time, according to heat transfer principle, the cold water in double water cooling road 8 is influenced to start to rise by hot gas
Temperature causes double 8 bulk temperature of water cooling road to rise, and 7 both ends of thermoelectric unit are electrically connected, therefore double with inlet and outlet respectively
The water inlet in the cold road 8 of draining forms temperature end, and the water outlet in double water cooling road 8 forms low-temperature end, and both ends form temperature difference, according to
Thermoelectric conversion technology, it will the intrinsic thermal energy of guard grating is converted into electric energy and provides power supply for alarm.
With the continuous firing of guard grating ontology, the temperature in double water cooling road 8 will continue to rise, when rising to 50 DEG C
When, high temperature signal is passed to alarm by temperature sensor, and the level-one alarm lamp 5 of alarm lights at this time, and people is reminded to replace
Cold water in water cooling road, when rising to 80 DEG C, the level-one alarm lamp 5 and secondary alarm lamp 6 of alarm light simultaneously, remind people
Thermo-field thoery in guard grating ontology, it is dangerous, it is necessary to take safety measures immediately.
Finally illustrate, above example is merely intended for describing the technical solutions of the present application, but not for limiting the present application, although ginseng
The utility model is described in detail according to preferred embodiment, it will be understood by those of ordinary skill in the art that, it can be to this
The technical solution of utility model is modified or replaced equivalently, without departing from the objective and model of technical solutions of the utility model
It encloses, should all cover in the right of the utility model.
Claims (5)
1. a kind of intrinsic safety type guard grating, including guard grating ontology and guard grating shell, guard grating ontology is located in guard grating shell
Portion, the upper and lower part of the guard grating shell are equipped with several instrument boards, it is characterised in that：It is installed in the guard grating shell
There is water cooling road, in the shape of a spiral, the water cooling road is arranged on the inner wall of guard grating shell in the water cooling road, inside the water cooling road
Full of cold water, water cooling road includes inlet and outlet, and the water outlet is equipped with the condenser jacket for cooling；
The guard grating case surface is equipped with thermoelectric unit and alarm, and the thermoelectric unit is electrically connected with alarm；The heat
Electric unit both ends are electrically connected respectively with inlet and outlet, and the water inlet is equipped with temperature sensor, the alarm packet
It includes for prompting level-one alarm lamp of the water cooling channel temp more than 50 DEG C and for prompting the two level report that water cooling channel temp is more than 80 DEG C
Warning lamp, the alarm are electrically connected with temperature sensor.
2. a kind of intrinsic safety type guard grating according to claim 1, it is characterised in that：The bottom and top of the guard grating shell
Portion is provided with the ventilating ducts of several perforation guard grating shells, and each ventilating duct is inclined ventilating duct from top to bottom, every two
Spacing between adjacent ventilating duct is equal.
3. a kind of intrinsic safety type guard grating according to claim 2, it is characterised in that：The guard grating outer casing bottom is equipped with
Blower fan, the blower fan are located at the underface in bottom ventilation road, and the guard grating cover top portion is equipped with blower fan, the suction
Fan is located at the surface in top portion ventilation road.
4. a kind of intrinsic safety type guard grating according to claim 2, it is characterised in that：The both sides of ventilating duct described in each are equal
Groove is provided with, dust-proof cushion is connected in groove.
5. a kind of intrinsic safety type guard grating according to claim 1, it is characterised in that：The water cooling road is double water cooling road,
Cold water is housed in the condenser jacket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721487349.8U CN207559553U (en) | 2017-11-09 | 2017-11-09 | A kind of intrinsic safety type guard grating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721487349.8U CN207559553U (en) | 2017-11-09 | 2017-11-09 | A kind of intrinsic safety type guard grating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207559553U true CN207559553U (en) | 2018-06-29 |
Family
ID=62682641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721487349.8U Expired - Fee Related CN207559553U (en) | 2017-11-09 | 2017-11-09 | A kind of intrinsic safety type guard grating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207559553U (en) |
-
2017
- 2017-11-09 CN CN201721487349.8U patent/CN207559553U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180629 Termination date: 20201109 |
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| CF01 | Termination of patent right due to non-payment of annual fee |