CN208076671U - A kind of blast switch detector - Google Patents
A kind of blast switch detector Download PDFInfo
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- CN208076671U CN208076671U CN201721707842.6U CN201721707842U CN208076671U CN 208076671 U CN208076671 U CN 208076671U CN 201721707842 U CN201721707842 U CN 201721707842U CN 208076671 U CN208076671 U CN 208076671U
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- controller
- blast switch
- cylinder
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Abstract
A kind of blast switch detector provided by the utility model, the blast switch include positive pressure chamber, negative pressure cavity and two external contacts, including controller, cylinder, pressure transmitter, constant-current source；The controller is connect with cylinder by conducting wire and motor, and outputs control signals to cylinder, and cylinder is connected by the positive pressure chamber or negative pressure cavity of pipeline and blast switch；The controller, which is connect with constant-current source by conducting wire and controls constant-current source, exports constant current to a contact of blast switch, another contact of blast switch is connect by conducting wire with controller, forming circuit；The cylinder is connect by pipeline with pressure transmitter, and the pressure transmitter is connect by conducting wire with controller and output pressure monitoring data signal is to controller.The blast switch detector is of simple structure and low cost, easy to use, detection efficiency is high, result is accurate.
Description
Technical field
The utility model belongs to blast switch detection technique field, more particularly to a kind of blast switch detector and required survey
The producing method of pressure testing power.
Background technology
Blast switch is the safety component that the gas-fired equipments such as gas fired-boiler, pot-type boiler must have, after combustion gas is lighted
Its exhaust gas must be outdoor through the unobstructed discharge of flue, but may make flue gas row not when there are high wind or flue Rig up error in outdoor then
It goes out, aggregation is exactly indoors to detect this situation to cause safety accident, the effect of blast switch, when burner is discharged fume not
Blast switch acts when smooth, contact closure or is released to controller one alarm signal of offer, and controller can stop firing
Burner, which is burnt or opened, assists fume extractor, ensures that flue gas will not be got in, therefore the performance of blast switch and reliability are
It is vital.
Blast switch has following several important parameters：
(1) blast switch operating pressure (Pa), when pressure reaches at or above this value, the auxiliary contact of blast switch are dynamic
Make, contact closure or release, this pressure is divided into as positive pressure or negative pressure, corresponding two class blast switch；
(2) blast switch releases stress (Pa), and when pressure is less than this value, the auxiliary contact of blast switch reset；
(3) blast switch contact resistance (m Ω)；
(4) blast switch action frequency, i.e. endurance quality.
Currently, the general less performance to blast switch of domestic gas-fired water heater industry makees further detection, even if detection,
And tested in the lab by complicated equipment, such as：Common blast switch detection device is two wind of manufacture
Press case, with two Fans, one be into bellows air blast to generate positive pressure, another be outside bellows exhausting to generate negative pressure,
It is respectively used to measure positive pressure blast switch and negative pressure blast switch, the rotating speed by controlling wind turbine achievees the purpose that adjust pressure；
The equipment volume of this pressure producing method is larger, and pressure is adjusted slowly, and wind pressure case has air inlet or air outlet, therefore pressure is held
It is vulnerable to the influence of external environment variation, not only equipment is complicated, of high cost, but also precision is low.
Utility model content
Technical problem：In order to solve the defects of prior art, the utility model provides a kind of blast switch detector.
Technical solution：A kind of blast switch detector provided by the utility model, the blast switch include positive pressure chamber, bear
Press chamber and two external contacts, including controller, cylinder, pressure transmitter, constant-current source；The controller passes through conducting wire with cylinder
It is connected with motor, and outputs control signals to cylinder, cylinder is connected by the positive pressure chamber or negative pressure cavity of pipeline and blast switch；Institute
Controller is stated to connect with constant-current source by conducting wire and control constant-current source output constant current to a contact of blast switch, wind pressure
Another contact of switch is connect with by conducting wire with controller, is formed into a loop；The cylinder passes through pipeline and pressure transmitter
Connection, the pressure transmitter is connect by conducting wire with controller and output pressure monitoring data signal is to controller.
As an improvement, further including touch screen, the touch screen is connect by conducting wire with controller, and is output control signals to
Controller, while receiving the monitoring data signal for coming from controller.
It is improved as another kind, the current regulation scope of the constant-current source is 0~000mA；It can be blast switch
Auxiliary contact provide programmable current with the real work state of analog switch contact.
Advantageous effect：Blast switch detector provided by the utility model is of simple structure and low cost, easy to use, inspection
Survey that efficient, result is accurate.
The device abandons the mode of wind pressure case and wind turbine and detects wind pressure in such a way that cylinder generates relevant pressure completely
Switch；Positive pressure is generated by the propulsion of cylinder in its environment sealed at one, by the extraction generation negative pressure of cylinder, therefore for
Positive pressure blast switch and negative pressure blast switch are the positive and negative rotation for changing motor, and cylinder is made to promote or extract out, this mode
Blast switch detection can be made to be reduced into a desk-top instrument by an equipment, manufacturing cost is greatly reduced, and makes pressure tune
Section speed and detection efficiency greatly improve, detection one blast switch only need several seconds, while also effectively improve operation
The working environment of person, reduces labor intensity.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model blast switch detector.
Specific implementation mode
The utility model blast switch detector is further illustrated below.
Blast switch detector, blast switch include positive pressure chamber, negative pressure cavity and two external contacts, including controller 1, gas
Cylinder 2, pressure transmitter 3, constant-current source 4, touch screen 5；Controller 1 is connect with cylinder 2 by conducting wire and motor, and exports control letter
Number to cylinder 2, cylinder 2 is connect by pipeline with the positive pressure chamber or negative pressure cavity of blast switch 6；Controller 1 passes through conducting wire and constant current
Source 4, which connects and controls constant-current source 4, exports constant current to a contact of blast switch 6, another contact of blast switch 6 with
It is connect, is formed into a loop with controller 1 by conducting wire；Cylinder 2 is connect by pipeline with pressure transmitter 3, and pressure transmitter 3 passes through
Conducting wire is connect with controller 1 and output pressure monitoring data signal is to controller 1；Touch screen 5 is connected by conducting wire and controller 1
It connects, and outputs control signals to controller 1, while receiving the monitoring data signal for coming from controller 1；The electric current of constant-current source 4
Adjustable range is 0~1000mA.
The operation principle of the device：Control signal is exported to controller 1 by touch screen 5, controller 1 controls constant-current source 4
Constant current is exported to blast switch 6, controller 1 controls cylinder 2 and generation positive pressure or extraction is promoted to generate negative pressure, and passes through pressure
The detection of power transmitter 3 and output pressure data are to controller 1；When pressure reaches a certain numerical value, the auxiliary contact of blast switch 6
Action, controller 1 to 5 output action pressure of touch screen, release stress, the data such as contact resistance.
Claims (3)
1. a kind of blast switch detector, the blast switch includes that positive pressure chamber, negative pressure cavity and two external contacts, feature exist
In：Including controller (1), cylinder (2), pressure transmitter (3), constant-current source (4)；The controller (1) is with cylinder (2) by leading
Line connects, and outputs control signals to cylinder (2), and cylinder (2) is connected by the positive pressure chamber or negative pressure cavity of pipeline and blast switch (6)
It connects；The controller (1), which is connect with constant-current source (4) by conducting wire and controls constant-current source (4), exports constant current to blast switch
(6) a contact, another contact of blast switch (6) are connect with by conducting wire with controller (1), forming circuit；It is described
Cylinder (2) is connect by pipeline with pressure transmitter (3), the pressure transmitter (3) connect with controller (1) by conducting wire and
Output pressure monitoring data signal is to controller (1).
2. a kind of blast switch detector according to claim 1, it is characterised in that：Further include touch screen (5), it is described to touch
Control screen (5) is connect by conducting wire with controller (1), and outputs control signals to controller (1), while being received and being come from controller
(1) monitoring data signal.
3. a kind of blast switch detector according to claim 1, it is characterised in that：The electric current tune of the constant-current source (4)
Adjusting range is 0~1000mA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721707842.6U CN208076671U (en) | 2017-12-11 | 2017-12-11 | A kind of blast switch detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721707842.6U CN208076671U (en) | 2017-12-11 | 2017-12-11 | A kind of blast switch detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208076671U true CN208076671U (en) | 2018-11-09 |
Family
ID=64032652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721707842.6U Active CN208076671U (en) | 2017-12-11 | 2017-12-11 | A kind of blast switch detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208076671U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111896867A (en) * | 2020-07-11 | 2020-11-06 | 南京溪和泉仪器有限公司 | Detection device and detection method for bimetal temperature switch and thermistor temperature sensor |
-
2017
- 2017-12-11 CN CN201721707842.6U patent/CN208076671U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111896867A (en) * | 2020-07-11 | 2020-11-06 | 南京溪和泉仪器有限公司 | Detection device and detection method for bimetal temperature switch and thermistor temperature sensor |
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