CN209327461U - Dangerous spark identification apparatus at a kind of short-circuit contact - Google Patents
Dangerous spark identification apparatus at a kind of short-circuit contact Download PDFInfo
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- CN209327461U CN209327461U CN201821926949.4U CN201821926949U CN209327461U CN 209327461 U CN209327461 U CN 209327461U CN 201821926949 U CN201821926949 U CN 201821926949U CN 209327461 U CN209327461 U CN 209327461U
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Abstract
The utility model discloses dangerous spark identification apparatus at a kind of short-circuit contact, comprising: power module, for alternating voltage needed for providing measurement；Sample module, for generating current limiting effect to be measured in short circuit；Sampled measurements module has the pressure drop of notable difference compared with normal condition for generating one in short circuit to observe the short-circuit time started to current-limiting protection；Load blocks, current path and burning medium when for providing normal condition and short circuit, wherein the power module, test sample, sampled measurements module and load blocks are successively contacted, by the utility model, may be implemented to identify the spark hazard generated at short-circuit contact.
Description
Technical field
The utility model relates to architectural electricity fireproofing technique fields, reflect more particularly to dangerous spark at a kind of short-circuit contact
Determine device.
Background technique
Currently, architectural electricity fire protection field a kind of new product occurs for electric short circuit current limliting, this kind of product can be effective
Inhibit the spark generated at short-circuit electric shock, however cut-off current value determines the risk of spark.Therefore, current limliting electricity how is identified
The relationship of flow valuve and dangerous spark needs the identification apparatus of dangerous spark at a kind of pair of contact.
Utility model content
In order to overcome the deficiencies of the above existing technologies, a kind of being designed to provide at short-circuit contact for the utility model is endangered
Dangerous spark identification apparatus identifies the spark hazard generated at short-circuit contact with realizing.
In view of the above and other objects, the utility model proposes dangerous spark identification apparatus at a kind of short-circuit contact, comprising:
Power module, for alternating voltage needed for providing measurement；
Sample module, for generating current limiting effect to be measured in short circuit；
Sampled measurements module has the pressure drop of notable difference to open to observe short circuit for generating one in short circuit compared with normal condition
Begin to the time of current-limiting protection；
Load blocks, current path and burning medium when for providing normal condition and short circuit,
Wherein, the power module, test sample, sampled measurements module and load blocks are successively contacted.
Preferably, the load blocks include resistive load Z, short-circuit contact switch T and combustibles M, the short-circuit contact
Switch T and resistive load Z is in parallel, and is connected between the power module and sampled measurements module, the combustibles M with it is described
Short-circuit contact switch T distance is not more than 10cm.
Preferably, without spacer among the combustibles M and short-circuit contact switch T.
Preferably, the power module includes an an alternating-current voltage source GR and single-pole single-throw switch (SPST) S.
Preferably, the sampled measurements module includes an oscillograph CR and noninductive sample resistance R, the oscillograph CR and nothing
It is in parallel to feel sample resistance.
Preferably, the firewire of the alternating-current voltage source GR is connected to one end of single-pole single-throw switch (SPST) S, and the single-pole single-throw(SPST is opened
The other end for closing S is connected to the end of incoming cables of the sample module, and the leading-out terminal of the sample module is connected to the noninductive sampling
One end of resistance R and the sampling test pencil anode of oscillograph CR, the sampling of the other end and oscillograph CR of the noninductive sample resistance R
Test pencil negative terminal is commonly connected to one end of resistive load Z and one end of button switch T, the other end of the resistive load Z with
And the other end of button switch T be connected after be connected to the zero curve of the alternating-current voltage source GR.
Preferably, the noninductive sample resistance R value is 0.001~0.1 Europe.
Preferably, the noninductive sample resistance R value is 0.01 Europe.
Preferably, the power module includes that an alternating-current voltage source GR and double-pole double-throw switch.
Preferably, the double-point double-throw switch controls the firewire and zero curve or two phase lines of the alternating-current voltage source GR simultaneously
To ensure safety.
Compared with prior art, dangerous spark identification apparatus can be realized to short circuit touching at a kind of short-circuit contact of the utility model
The spark hazard generated at point is identified.
Detailed description of the invention
Fig. 1 is the structure chart of dangerous spark identification apparatus at a kind of short-circuit contact of the utility model.
Specific embodiment
Below by way of specific specific example and the embodiments of the present invention is described with reference to the drawings, those skilled in the art
Member can be understood easily the further advantage and effect of the utility model by content disclosed in the present specification.The utility model also may be used
It is implemented or is applied by other different specific examples, the various details in this specification can also be based on different viewpoints and answer
With, carried out under the spirit without departing substantially from the utility model it is various modification and change.
Fig. 1 is the structure chart of dangerous spark identification apparatus at a kind of short-circuit contact of the utility model.As shown in Figure 1, this reality
With dangerous spark identification apparatus at a kind of novel short-circuit contact, including power module 10, sample module 20, sampled measurements module 30
With load blocks 40.
Wherein, power module 10 is made of alternating-current voltage source GR (220V/380V 50HZ) and single-pole single-throw switch (SPST) S, is used for
Alternating voltage needed for measurement is provided；Sample module 20 is made of one or more sample TR, to be measured for generating in short circuit
Current limiting effect；Sampled measurements module 30 is by oscillograph CR and noninductive sample resistance R (0.001~0.1 Europe, 0.01 Europe of representative value)
Composition, for generated in short circuit one compared with normal condition have the pressure drop of notable difference with observe short circuit start to current-limiting protection when
Between；Load blocks 40 are made of resistive load Z, short-circuit contact switch T and combustibles M, when for providing normal condition and short circuit
Current path and burning medium.
When measurement, power module 10, test sample 20, sampled measurements module 30 and load blocks 40 are successively contacted, specifically
For, the firewire of alternating-current voltage source GR is connected to one end of single-pole single-throw switch (SPST) S, and the other end of single-pole single-throw switch (SPST) S is connected to
The end of incoming cables of sample TR, the leading-out terminal of sample TR be connected to noninductive sample resistance R one end and oscillograph CR sampling test pencil just
End, the other end of noninductive sample resistance R and the sampling test pencil negative terminal of oscillograph CR be commonly connected to resistive load Z one end and
One end of short-circuit contact switch T, the other end of resistive load Z and the other end of short-circuit contact switch T are connected to electricity after being connected
The zero curve of potential source GR, combustibles and short-circuit contact switch distance are not more than 10cm, and centre is without spacer.
Preferably, single-pole single-throw switch (SPST) S can control the firewire and zero curve of voltage source GR simultaneously using double-point double-throw switch
(or two phase lines) to ensure safety.
The utility model principle is: when the contact of short-circuit two contact electric shock switch T, entire electric wiring forms short-circuit shape
State, sample TR occur short circuit current limitation according to cut-off current value and act, and short-circuit spark is generated at contact, if combustibles do not ignite,
The short-circuit spark is not dangerous spark, if combustibles ignite, which is dangerous spark.
As it can be seen that dangerous spark identification apparatus can be realized to generation at short-circuit contact at a kind of short-circuit contact of the utility model
Spark hazard is identified.
The above embodiments are only illustrative of the principle and efficacy of the utility model, and not for limitation, this is practical new
Type.Anyone skilled in the art can repair above-described embodiment under the spirit and scope without prejudice to the utility model
Decorations and change.Therefore, the rights protection scope of the utility model, should be as listed in the claims.
Claims (4)
1. dangerous spark identification apparatus at a kind of short-circuit contact, which is characterized in that described device includes:
Power module, for alternating voltage needed for providing measurement, the power module includes an alternating-current voltage source GR and one
Single-pole single-throw switch (SPST) S or double-pole double-throw switch；
Sample module, for generating current limiting effect to be measured in short circuit；
Sampled measurements module, for generated in short circuit one compared with normal condition have the pressure drop of notable difference with observe short circuit start to
The time of current-limiting protection, the sampled measurements module include an oscillograph CR and noninductive sample resistance R, the oscillograph CR and nothing
It is in parallel to feel sample resistance；
Load blocks, current path and burning medium when for providing normal condition and short circuit；
Wherein, the power module, test sample, sampled measurements module and load blocks are successively contacted；
The load blocks include resistive load Z, short-circuit contact switch T and combustibles M, the short-circuit contact switch T and resistive
It is in parallel to load Z, and is connected between the power module and sampled measurements module, the combustibles M is opened with the short-circuit contact
T distance is closed to be not more than among 10cm, the combustibles M and the short-circuit contact switch T without spacer；
The firewire of the alternating-current voltage source GR is connected to one end of single-pole single-throw switch (SPST) S, the other end of the single-pole single-throw switch (SPST) S
It is connected to the end of incoming cables of the sample module, the leading-out terminal of the sample module is connected to one end of the noninductive sample resistance R
With the sampling test pencil anode of oscillograph CR, the other end of the noninductive sample resistance R and the sampling test pencil negative terminal of oscillograph CR are total
It is same to be connected to one end of resistive load Z and one end of button switch T, the other end and button switch T of the resistive load Z
The other end be connected after be connected to the zero curve of the alternating-current voltage source GR.
2. dangerous spark identification apparatus at a kind of short-circuit contact as described in claim 1, it is characterised in that: the noninductive sampling
Resistance R value is 0.001~0.1 Europe.
3. dangerous spark identification apparatus at a kind of short-circuit contact as claimed in claim 2, it is characterised in that: the noninductive sampling
Resistance R value is 0.01 Europe.
4. dangerous spark identification apparatus at a kind of short-circuit contact as described in claim 1, it is characterised in that: the double-pole double throw
The switch while firewire for controlling the alternating-current voltage source GR and zero curve or two phase lines are to ensure safety.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821926949.4U CN209327461U (en) | 2018-11-21 | 2018-11-21 | Dangerous spark identification apparatus at a kind of short-circuit contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821926949.4U CN209327461U (en) | 2018-11-21 | 2018-11-21 | Dangerous spark identification apparatus at a kind of short-circuit contact |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209327461U true CN209327461U (en) | 2019-08-30 |
Family
ID=67711049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821926949.4U Active CN209327461U (en) | 2018-11-21 | 2018-11-21 | Dangerous spark identification apparatus at a kind of short-circuit contact |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209327461U (en) |
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2018
- 2018-11-21 CN CN201821926949.4U patent/CN209327461U/en active Active
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