CN204216565U - Gas water line pressure monitoring automatic control circuit - Google Patents
Gas water line pressure monitoring automatic control circuit Download PDFInfo
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- CN204216565U CN204216565U CN201420658376.7U CN201420658376U CN204216565U CN 204216565 U CN204216565 U CN 204216565U CN 201420658376 U CN201420658376 U CN 201420658376U CN 204216565 U CN204216565 U CN 204216565U
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- relay
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- gas water
- diode
- control circuit
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Abstract
The utility model discloses a kind of gas water line pressure monitoring automatic control circuit, comprise delays time to control unit, rectification unit, two relays, three contacts.Rectification unit is used for alternating current being converted to direct current and being connected with the second contact by delays time to control unit, first contact is connected with one end of the coil of the first relay, the other end of the coil of the first relay is connected with the 3rd contact by the coil of the second relay, node ground connection between the coil of first and second relay, the two ends of the switch of first and second relay are corresponding to be respectively connected with first and second frequency converter; The switch of first and second relay is normally closed switch, and when the first relay work or when not working, the second relay does not work or works.Above-mentioned automatic control circuit by first and second relay correspondence is combined with first and second frequency converter, gas water line pressure superelevation or ultralow time automatically cut off the power supply of first and second frequency converter, to avoid the leakage of gas water, safe and reliable.
Description
Technical field
The utility model relates to a kind of automatic control circuit, particularly a kind of gas water line pressure monitoring automatic control circuit.
Background technology
When gas water is transported to another place by a place, gas water feed-line is all adopted to carry.Gas water feed-line is fiberglass, and the advantage of fiberglass is corrosion-resistant, but to be fragility large for shortcoming, destructible.Recently, particularly near gas water pipeline, construction or robber dig hard wood which has long been buried in earth, and the event that more gas water pipeline is destroyed occurred.After gas water pipeline is destroyed, if do not stop conveying, a large amount of gas water is excessive enters farmland, river, and CL-wherein, sulfide enter river, farmland, will cause environmental pollution accident in polluted drinking water source.
Utility model content
For above-mentioned the deficiencies in the prior art, technical problem to be solved in the utility model is: provide a kind of gas water line pressure monitoring automatic control circuit, its can the pressure of gas water pipeline excessive or too low time automatically cut off the transmission of gas water, guarantee transmission security, avoid the leakage causing gas water.
A kind of gas water line pressure monitoring automatic control circuit provided by the utility model, be connected with first and second frequency converter, described gas water line pressure monitoring automatic control circuit comprises delays time to control unit, rectification unit, first and second relay, the first to the 3rd contact; Described rectification unit is used for alternating current to be converted to direct current, and described rectification unit is connected with the second contact by delays time to control unit, described first contact is connected with one end of the coil of the first relay, the other end of the coil of described first relay is connected with the 3rd contact by the coil of the second relay, node ground connection between the coil of described first relay and the coil of the second relay, the two ends of the switch of described first relay are all connected with the first frequency converter, and the two ends of the switch of described second relay are all connected with the second frequency converter; Described delays time to control unit is used for rectification unit and the second contact described in Delayed conducting, the switch of described first relay and the switch of the second relay are normally closed switch, and when described first relay work, described second relay does not work, when described first relay does not work, described second relay work.
Concrete, described rectification unit comprises transformer, rectifier bridge and electric capacity C1, C2, the two ends of the primary coil of described transformer are connected with alternating current, the two ends of the secondary coil of described transformer respectively with first of rectifier bridge and the 3rd end be connected, second end ground connection of described rectifier bridge, 4th end by electric capacity C1 ground connection, to be also directly connected with the second contact, and described electric capacity C2 and electric capacity C1 is connected in parallel.
Concrete, described rectifier bridge comprises diode D1-D4, the negative electrode of described diode D1 is connected with the anode of diode D4 and as the first end of rectifier bridge, the anode of described diode D1 is connected with the anode of diode D2 and as the second end of rectifier bridge, the negative electrode of described diode D2 is connected with the anode of diode D3 and as the 3rd end of rectifier bridge, and the negative electrode of described diode D3 is connected with the negative electrode of diode D4 and as the 4th end of rectifier bridge.
Further, described gas water line pressure monitoring automatic control circuit also comprises resistance R1, and described resistance R1 is connected between electric capacity C1 and C2.
Further, described gas water line pressure monitoring automatic control circuit also comprises diode D5, and the anode of described diode D5 is connected to the node between resistance R1 and electric capacity C2, the direct ground connection of negative electrode of described diode D5.
Further, described gas water line pressure monitoring automatic control circuit also comprises resistance R3, and one end of described resistance R3 is connected to the node between the coil of the first relay and the coil of the second relay, the other end ground connection of described resistance R3.
Further, described gas water line pressure monitoring automatic control circuit also comprises electric capacity C3, and one end of described electric capacity C3 is connected to the node between the coil of the first relay and the coil of the second relay, the other end ground connection of described electric capacity C3.
Above-mentioned gas water line pressure monitoring automatic control circuit is by combining first and second relay correspondence with the first frequency converter and the second frequency converter, gas water line pressure superelevation or ultralow time automatically cut off the power supply of the first frequency converter and the second frequency converter, and then termination of pumping, to avoid the leakage of gas water, safe and reliable.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 and Fig. 2 is the circuit diagram of the better embodiment of the utility model gas water line pressure monitoring automatic control circuit.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
First, before embodiment is described, be necessary that some terms to occurring make an explanation herein.Such as:
Use the term such as " first ", " second " to describe various element if occur herein, but these elements should not limited by these terms.These terms are only used for differentiation element and another element.Therefore, " first " element also can be called as " second " element and not depart from instruction of the present utility model.
In addition, should be understood that, when mentioning an element " connection " or " connection " to another element, it can directly connect or directly be connected to another element or also can there is intermediary element.On the contrary, when mentioning that an element " directly connection " or " directly connecting " are to another element, then there is not intermediary element.
The various terms occurred in this article are only not intended to conduct to restriction of the present utility model for describing the object of concrete execution mode.Unless context is clearly pointed out in addition, then singulative intention also comprises plural form.
" comprise " when using term in this manual and/or " including " time, these terms specify the existence of described feature, entirety, step, operation, element and/or parts, but also do not get rid of more than one other features, entirety, step, operation, element, the existence of parts and/or its group and/or additional.
About embodiment:
Shown in Figure 1, the better embodiment of the utility model gas water line pressure monitoring automatic control circuit comprises shown in delays time to control unit 10(Fig. 2), transformer T1, rectifier bridge, resistance R1 and R2, electric capacity C1-C3, diode D5, first and second relay, the first to the 3rd contact 1-3.
Described rectifier bridge comprises diode D1-D4.The two ends of the primary coil of described transformer T1 are connected with alternating current, the two ends of the secondary coil of described transformer T1 are connected with the two ends of rectifier bridge respectively, concrete, the first end of the secondary coil of described transformer T1 is connected with the anode of the negative electrode of diode D1 and diode D4, and the second end of the secondary coil of described transformer T1 is connected with the anode of the negative electrode of diode D2 and diode D3.The anode of described diode D1 and the equal ground connection of anode of diode D2, the negative electrode of described diode D4 and the negative electrode of diode D3 are all by electric capacity C1 ground connection, the negative electrode of described diode D4 is also connected with the anode of diode D5 by resistance R1 with the node between electric capacity C1, the direct ground connection of negative electrode of described diode D5.Node between described resistance R1 and diode D5 is by electric capacity C2 ground connection.Described resistance R1 and the node between diode D5 are also connected with the second contact 2 by described delays time to control unit 10.
The first end of the coil J1 of described first relay is connected with the first contact 1, and second end of the coil J1 of described first relay is connected with the first end of the coil J2 of the second relay, and second end of the coil J2 of described second relay is connected with the 3rd contact 3.Node between described coil J1 and J2 is by resistance R3 ground connection, and described resistance R3 and electric capacity C3 is connected in parallel.
One end of the K switch 1 of described first relay is for receiving 1# frequency converter incoming call, and the other end removes electricity for exporting 1# frequency converter.One end of the K switch 2 of described second relay is for receiving 2# frequency converter incoming call, and the other end removes electricity for exporting 2# frequency converter.
In present embodiment, the object of described delays time to control unit 10 is to postpone connection second contact 2 and power supply.Because because pipeline itself does not have pressure time pump just starts, if powered directly to the second contact 2, then first and second frequency converter described all can not work, and can not beat pressure, then cannot start to carry action.When after pump startup a period of time, after whole pipe interior has certain pressure, described second contact 2 starts electric.
Described transformer T1, rectifier bridge, resistance R1, electric capacity C1 and C2, diode D5 form rectification unit, for providing working power for first and second relay.The two ends of the K switch 1 of described first relay are all connected with 1# frequency converter, and the two ends of the K switch 2 of described second relay are all connected with 2# frequency converter, for connecting or disconnect the power supply of 1# frequency converter and 2# frequency converter, and conveying or stopping conveying gas water then.Specifically, in the utility model, described first relay and the second relay are mutual conductance, and when the first relay work, described second relay does not work; When described first relay does not work, described second relay work.And, the K switch 1 of described first relay and the K switch 2 of the second relay are normally closed switch, namely when the first relay work and its coil J1 dead electricity time, the K switch 1 of described first relay is communicated with, when described first relay work and its coil J1 obtains electric time, the K switch 1 of described first relay disconnects; When described second relay work and its coil J2 dead electricity time, the K switch 2 of described second relay is communicated with, when described second relay work and its coil J2 obtains electric time, the K switch 2 of described second relay disconnects.
Described first to the 3rd contact 1-3 is electrically connected on Pressure gauge, and is installed on gas water pipeline, for detecting the pressure of gas water pipeline.When gas water pipeline rupture, reveal the ultralow or pressure superelevation of pressure may booster time, the power supply of 1# frequency converter and 2# frequency converter is cut off, thus stops continuing conveying gas water.Concrete, when gas water pipeline is normal, the second contact 2 with first and the 3rd contact 1,3 all do not contact, the K switch 1 of described first relay or the K switch 2 of the second relay are communicated with, namely 1# frequency converter or 2# frequency converter normally work, and continue conveying gas water to make gas water pipeline; When gas water line pressure superelevation, described second contact 2 contacts with the first contact 1, forms loop, first relay work and its coil J1 obtains electric, described K switch 1 disconnects, and the second relay does not work, namely 1# frequency converter and 2# frequency converter all cut-off, and then reach the object of termination of pumping; When gas water line pressure is ultralow, described second contact 2 contacts with the 3rd contact 3, and form loop, the first relay does not work, the second relay work and its coil J2 obtains electric, namely 1# frequency converter and 2# frequency converter all cut-off, and then reach the object of termination of pumping.
Above-mentioned gas water line pressure monitoring automatic control circuit is by combining first and second relay correspondence with 1# frequency converter and 2# frequency converter, gas water line pressure superelevation or ultralow time automatically cut off the power supply of 1# frequency converter and 2# frequency converter, and then termination of pumping, to avoid the leakage of gas water, safe and reliable.
These are only execution mode of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model specification and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (7)
1. a gas water line pressure monitoring automatic control circuit, be connected with first and second frequency converter, it is characterized in that: described gas water line pressure monitoring automatic control circuit comprises delays time to control unit, rectification unit, first and second relay, the first to the 3rd contact; Described rectification unit is used for alternating current to be converted to direct current, and described rectification unit is connected with the second contact by delays time to control unit, described first contact is connected with one end of the coil of the first relay, the other end of the coil of described first relay is connected with the 3rd contact by the coil of the second relay, node ground connection between the coil of described first relay and the coil of the second relay, the two ends of the switch of described first relay are all connected with the first frequency converter, and the two ends of the switch of described second relay are all connected with the second frequency converter; Described delays time to control unit is used for rectification unit and the second contact described in Delayed conducting, the switch of described first relay and the switch of the second relay are normally closed switch, and when described first relay work, described second relay does not work, when described first relay does not work, described second relay work.
2. gas water line pressure monitoring automatic control circuit as claimed in claim 1, it is characterized in that: described rectification unit comprises transformer, rectifier bridge and electric capacity C1, C2, the two ends of the primary coil of described transformer are connected with alternating current, the two ends of the secondary coil of described transformer respectively with first of rectifier bridge and the 3rd end be connected, second end ground connection of described rectifier bridge, 4th end by electric capacity C1 ground connection, to be also directly connected with the second contact, and described electric capacity C2 and electric capacity C1 is connected in parallel.
3. gas water line pressure monitoring automatic control circuit as claimed in claim 2, it is characterized in that: described rectifier bridge comprises diode D1-D4, the negative electrode of described diode D1 is connected with the anode of diode D4 and as the first end of rectifier bridge, the anode of described diode D1 is connected with the anode of diode D2 and as the second end of rectifier bridge, the negative electrode of described diode D2 is connected with the anode of diode D3 and as the 3rd end of rectifier bridge, and the negative electrode of described diode D3 is connected with the negative electrode of diode D4 and as the 4th end of rectifier bridge.
4. gas water line pressure monitoring automatic control circuit as claimed in claim 2, it is characterized in that: also comprise resistance R1, described resistance R1 is connected between electric capacity C1 and C2.
5. gas water line pressure monitoring automatic control circuit as claimed in claim 4, it is characterized in that: also comprise diode D5, the anode of described diode D5 is connected to the node between resistance R1 and electric capacity C2, the direct ground connection of negative electrode of described diode D5.
6. gas water line pressure monitoring automatic control circuit as claimed in claim 1, it is characterized in that: also comprise resistance R3, one end of described resistance R3 is connected to the node between the coil of the first relay and the coil of the second relay, the other end ground connection of described resistance R3.
7. gas water line pressure monitoring automatic control circuit as claimed in claim 1, it is characterized in that: also comprise electric capacity C3, one end of described electric capacity C3 is connected to the node between the coil of the first relay and the coil of the second relay, the other end ground connection of described electric capacity C3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420658376.7U CN204216565U (en) | 2014-11-06 | 2014-11-06 | Gas water line pressure monitoring automatic control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420658376.7U CN204216565U (en) | 2014-11-06 | 2014-11-06 | Gas water line pressure monitoring automatic control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204216565U true CN204216565U (en) | 2015-03-18 |
Family
ID=52985202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420658376.7U Expired - Fee Related CN204216565U (en) | 2014-11-06 | 2014-11-06 | Gas water line pressure monitoring automatic control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204216565U (en) |
-
2014
- 2014-11-06 CN CN201420658376.7U patent/CN204216565U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150318 Termination date: 20171106 |
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| CF01 | Termination of patent right due to non-payment of annual fee |