CN203398749U - Intrinsically safe energy suppression circuit - Google Patents
Intrinsically safe energy suppression circuit Download PDFInfo
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- CN203398749U CN203398749U CN201320376630.XU CN201320376630U CN203398749U CN 203398749 U CN203398749 U CN 203398749U CN 201320376630 U CN201320376630 U CN 201320376630U CN 203398749 U CN203398749 U CN 203398749U
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Abstract
The utility model discloses an intrinsically safe energy suppression circuit. According to the circuit, a detecting element is connected between a load and an executive element; the detecting element is connected with a control element; and the executive element is connected between the detecting element and a power supply, and is connected with the control element. The circuit provided by the utility model can limit maximum transient energy in a numerical value, and has the advantages of low cost, low loss, good use effect, explosion-proof effect and convenient popularization and use.
Description
Technical field
The utility model relates to electricity field, relates in particular to a kind of essential safety Energy suppression circuit.
Background technology
In the environment such as colliery, petroleum and chemical industry, due to reasons such as oil gas volatilizations, can gather a large amount of explosion hazard gases-air mixtures and form deathtrap, so that when manufacturing and using the electric equipment in Gai hazardous area, be necessary to take special explosion precaution, need to limit the energy that can produce electric spark due to any possible situations such as equipment short circuit or overloads, must, by energy in the scope of a permission, meet the requirement of essential safety.
Existing a kind of Energy suppression mode is normally carried out physics flame proof by flame proof box at present, and this mode exists volume large, is inconvenient to carry the problem high with cost.
Another kind of Energy suppression mode is to come Limited Current and voltage by resistance current limliting and zener pressure limiting, reaches the object that suppresses energy, and this mode exists loss large, low-response and can not thoroughly cut off energy output.
Utility model content
Main purpose of the present utility model is to provide a kind of essential safety Energy suppression circuit, to solve current physics flame proof mode, exist volume large, be inconvenient to carry the problem high with cost, by resistance current limliting and zener pressure limiting, cause loss large, low-response and can not thoroughly cut off the problem of energy output.
In order to address the above problem, the invention provides a kind of essential safety Energy suppression circuit, comprising:
Detecting element is connected between load and executive component, and this detecting element is connected with control element; Described executive component is connected between detecting element and power supply, is connected with control element.
Further, foregoing circuit also can comprise: described detecting element comprises the second resistance, one end of described the second resistance is all connected with the positive pole of load and the energy electrode input end of control element, and the other end is all connected with the control output end of executive component and the energy negative input of control element.
Further, foregoing circuit also can comprise: described executive component comprises P-channel field-effect transistor (PEFT) pipe and the first resistance, the source electrode of described P-channel field-effect transistor (PEFT) pipe is all connected with one end of the first resistance with the positive pole of described power supply, the grid of described P-channel field-effect transistor (PEFT) pipe is all connected with the other end of the first resistance with the control output end of control element, and the drain electrode of described P-channel field-effect transistor (PEFT) pipe is connected with described the second resistance.
Further, foregoing circuit also can comprise: described control element comprises high side energy monitor, the 3rd resistance, the 4th resistance, the 5th resistance and electric capacity, and described high side energy monitor comprises the first pin, the second pin, the 3rd pin, the 4th pin, the 5th pin, the 6th pin, the 7th pin and the 8th pin; One end of described the 3rd resistance is all connected with the positive pole of power supply and the first pin of high side energy monitor, and the other end of described the 3rd resistance is all connected with the 5th pin of high side energy monitor and one end of electric capacity; The other end ground connection of described electric capacity, one end of described the 4th resistance is connected with the second pin of high side energy monitor, and the other end of described the 4th resistance is all connected with one end of the 5th resistance with the 3rd pin of high side energy monitor; The other end ground connection of described the 5th resistance; The 4th pin ground connection of described high side energy monitor, the 6th pin of described high side energy monitor is executive component input, the 7th pin of described high side energy monitor is that energy negative input is connected with the cathode output end of detecting element, and the 8th pin of described high side energy monitor is that energy electrode input end is connected with the cathode output end of detecting element.
Compared with prior art, application the utility model, can realize restriction maximum transient energy in the function of specified value, and cost is low, and loss is little, and result of use is good, reaches explosion-proof effect, is convenient to promote the use of.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present utility model, forms the application's a part, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the schematic block circuit diagram of essential safety Energy suppression circuit of the present utility model;
Fig. 2 is the circuit theory diagrams of the embodiment of essential safety Energy suppression circuit of the present utility model.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and the specific embodiments, the utility model is described in further detail.
Essential safety Energy suppression circuit of the present utility model, mainly comprises: detecting element, for detection of instantaneous energy; Control element, for by detected energy and setting threshold compares and carry out energy output and control; And executive component, for carrying out the control action to energy.
Essential safety Energy suppression circuit as shown in Figure 1, wherein detecting element 40, are connected between load 50 and executive component 20, are connected, for detection of instantaneous energy with control element 30; Executive component 20, is connected between detecting element 40 and power supply 10, is connected, for carrying out the control action to energy with control element 30; Control element 30, is connected with described executive component 40 with described detecting element 20 respectively, for receiving described instantaneous energy, compares and controls executive component 40 stop continuing to carry out energy output to load 50 with the energy threshold of setting.
Essential safety Energy suppression circuit main purpose of the present utility model, for the safe DC power supply of non-intrinsically safe or battery, is also applicable to all chargeable or non-rechargeabel non-intrinsically safe safety battery types and combination.Can be used as the Energy suppression circuit of power supply simultaneously, also can be for the Charge Management of non-intrinsically safe safety battery.
As shown in Figure 2, in embodiment of the present utility model, detecting element comprises resistance R 2, and resistance R 2 one end are all connected with control element energy electrode input end with load is anodal, and resistance R 2 other ends are all connected with control element energy negative input with executive component control output end.
In this embodiment, executive component comprises P-channel field-effect transistor (PEFT) pipe Q1 and resistance R 1.P-channel field-effect transistor (PEFT) pipe Q1 source electrode is all connected with resistance R 1 one end with positive source, and P-channel field-effect transistor (PEFT) pipe Q1 grid is all connected with resistance R 1 other end with control element control output end, and P-channel field-effect transistor (PEFT) pipe Q1 drain electrode is connected with detecting element resistance R 2.
In this embodiment, control element comprises high side energy monitor U1, resistance R 3, resistance R 4, resistance R 5 and capacitor C 1, and described high side energy monitor comprises pin 1, pin 2, pin 3, pin 4, pin 5, pin 6, pin 7 and pin 8.Resistance R 3 one end are all connected with the pin 1 of high side energy monitor U1 with positive source, and resistance R 3 other ends are all connected with capacitor C 1 one end with the pin 5 of high side energy monitor U1; Capacitor C 1 other end ground connection, resistance R 4 one end are connected with the pin 2 of high side energy monitor U1, and resistance R 4 other ends are all connected with resistance R 5 one end with high side energy monitor U1 pin 3; Resistance R 5 other end ground connection; High side energy monitor U1 pin 4 ground connection, high side energy monitor U1 pin 6 is control output end, and high side energy monitor U1 pin 7 is connected with detecting element cathode output end, and described high side energy monitor U1 pin 8 is connected with detecting element cathode output end.
Workflow of the present utility model: electric current passes through R2, be converted to voltage proportional to instantaneous energy, and voltage is input to high side energy monitor U1 pin 7 and pin 8, in high side energy monitor U1 inside, amplify and the high side energy monitor of Voltage-output U1 pin 2 is carried out to dividing potential drop by resistance R 4 and resistance R 5, voltage after dividing potential drop is inputted high side energy monitor U1 pin 3, enters comparison with high side energy monitor U1 internal reference voltage.If higher than internal reference voltage, high side energy monitor U1 pin 6 output high level, drive P-channel field-effect transistor (PEFT) pipe Q1 to open, and stop providing energy to load; If lower than internal reference voltage, high side energy monitor U1 pin 6 output low levels, drive P-channel field-effect transistor (PEFT) pipe Q1 to turn-off, and to load, provide energy.
According to above-described embodiment, the utility model can, by load energy supply is limited, be implemented fast thoroughly cutting function in the time of can guaranteeing to occur the faults such as short circuit or overload.The utility model is mainly used in, in the electric power system of the environment such as colliery, petroleum and chemical industry, reaching essential safety requirement.
The foregoing is only embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in claim scope of the present utility model.
Claims (4)
1. an essential safety Energy suppression circuit, is characterized in that, comprising:
Detecting element is connected between load and executive component, and this detecting element is connected with control element; Described executive component is connected between detecting element and power supply, is connected with control element.
2. circuit as claimed in claim 1, it is characterized in that: described detecting element comprises the second resistance, one end of described the second resistance is all connected with the positive pole of load and the energy electrode input end of control element, and the other end is all connected with the control output end of executive component and the energy negative input of control element.
3. circuit as claimed in claim 2, it is characterized in that: described executive component comprises P-channel field-effect transistor (PEFT) pipe and the first resistance, the source electrode of described P-channel field-effect transistor (PEFT) pipe is all connected with one end of the first resistance with the positive pole of described power supply, the grid of described P-channel field-effect transistor (PEFT) pipe is all connected with the other end of the first resistance with the control output end of control element, and the drain electrode of described P-channel field-effect transistor (PEFT) pipe is connected with described the second resistance.
4. circuit as claimed in claim 3, it is characterized in that: described control element comprises high side energy monitor, the 3rd resistance, the 4th resistance, the 5th resistance and electric capacity, described high side energy monitor comprises the first pin, the second pin, the 3rd pin, the 4th pin, the 5th pin, the 6th pin, the 7th pin and the 8th pin; One end of described the 3rd resistance is all connected with the positive pole of power supply and the first pin of high side energy monitor, and the other end of described the 3rd resistance is all connected with the 5th pin of high side energy monitor and one end of electric capacity; The other end ground connection of described electric capacity, one end of described the 4th resistance is connected with the second pin of high side energy monitor, and the other end of described the 4th resistance is all connected with one end of the 5th resistance with the 3rd pin of high side energy monitor; The other end ground connection of described the 5th resistance; The 4th pin ground connection of described high side energy monitor, the 6th pin of described high side energy monitor is executive component input, the 7th pin of described high side energy monitor is that energy negative input is connected with the cathode output end of detecting element, and the 8th pin of described high side energy monitor is that energy electrode input end is connected with the cathode output end of detecting element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320376630.XU CN203398749U (en) | 2013-06-27 | 2013-06-27 | Intrinsically safe energy suppression circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320376630.XU CN203398749U (en) | 2013-06-27 | 2013-06-27 | Intrinsically safe energy suppression circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203398749U true CN203398749U (en) | 2014-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320376630.XU Expired - Lifetime CN203398749U (en) | 2013-06-27 | 2013-06-27 | Intrinsically safe energy suppression circuit |
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| Country | Link |
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| CN (1) | CN203398749U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015032361A1 (en) * | 2013-09-09 | 2015-03-12 | 北京长吉加油设备有限公司 | Handheld fuel distributor control device with current-limiting battery pack |
| CN104843625A (en) * | 2014-02-19 | 2015-08-19 | 北京长吉加油设备有限公司 | Handheld fuel distributer control equipment having current limiting battery set |
| CN105857015A (en) * | 2016-05-04 | 2016-08-17 | 宁波普瑞均胜汽车电子有限公司 | Circuit for output-driving rear defrosting load |
-
2013
- 2013-06-27 CN CN201320376630.XU patent/CN203398749U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015032361A1 (en) * | 2013-09-09 | 2015-03-12 | 北京长吉加油设备有限公司 | Handheld fuel distributor control device with current-limiting battery pack |
| CN104843625A (en) * | 2014-02-19 | 2015-08-19 | 北京长吉加油设备有限公司 | Handheld fuel distributer control equipment having current limiting battery set |
| CN105857015A (en) * | 2016-05-04 | 2016-08-17 | 宁波普瑞均胜汽车电子有限公司 | Circuit for output-driving rear defrosting load |
| CN105857015B (en) * | 2016-05-04 | 2018-04-06 | 宁波普瑞均胜汽车电子有限公司 | Defrost the circuit of load after a kind of output driving |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 101299 15 Jianshe West Street, Pinggu District, Beijing Patentee after: Jiwei Transportation Technology (Beijing) Co.,Ltd. Address before: 101299 15 Jianshe West Street, Pinggu District, Beijing Patentee before: GILBARCO CHINA Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140115 |