CN219016517U - Instantaneous state monitoring device of switching value sensor - Google Patents
Instantaneous state monitoring device of switching value sensor Download PDFInfo
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- CN219016517U CN219016517U CN202223469379.XU CN202223469379U CN219016517U CN 219016517 U CN219016517 U CN 219016517U CN 202223469379 U CN202223469379 U CN 202223469379U CN 219016517 U CN219016517 U CN 219016517U
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Abstract
The application belongs to the technical field of instrument state monitoring, and particularly relates to an instantaneous state monitoring device of a switching value sensor; the device comprises: a first set of fault detection loops and a second set of fault detection loops in parallel; the first group of fault detection loops are used for monitoring the instantaneous state of the switching value sensor in a normally open state in the signal loop; the second group of fault detection loops are used for monitoring the instantaneous state of the switching value sensor in a normally closed state in the signal loop. The device can realize the monitoring that the switching value sensor is in a normally open state or a normally closed state in the signal loop, and has strong practicability.
Description
Technical Field
The application belongs to the technical field of instrument state monitoring, and particularly relates to an instantaneous state monitoring device of a switching value sensor.
Background
Currently, in industrial application, the switching value sensor has the advantages of simple structure, simple control, low cost, high response speed and the like, and has been widely applied to state monitoring and control of process systems or equipment in various industrial environments. However, some automatic control systems do not have a data recording function, when the state of the switching value sensor changes, maintenance personnel cannot inquire a history record, meanwhile, when the switching value sensor fails and is affected by process system fluctuation or electromagnetic interference and the like in the installation environment, the state of the switching value sensor can be changed instantaneously, and the automatic control system cannot collect the state of the switching value sensor instantaneously due to the reason of a collection period.
Taking a nuclear power station as an example, a cold source of the ventilation and air conditioning system of the power station uses a water-cooled refrigerator, a large number of switching value sensors are designed on the refrigerator, and the switching value sensors send various states of the refrigerator to a PLC for monitoring and controlling. During normal operation of the refrigeration unit, an instantaneous integrated fault warning signal often occurs and disappears instantaneously. The maintenance personnel can not accurately judge which switch value sensor state has changed instantaneously, if all switch value sensor signals are sent to the PLC for monitoring, the operation cost is greatly increased, and the instantaneous change of some switch value sensors state is not necessarily accurately acquired.
Disclosure of Invention
The utility model aims at providing a switching value sensor instantaneous state monitoring devices, solve unable quick, accurate monitoring out switching value sensor's state change's problem.
The technical scheme for realizing the purpose of the application comprises the following steps:
the embodiment of the application provides a switching value sensor instantaneous state monitoring device, the device includes: a first set of fault detection loops and a second set of fault detection loops in parallel;
the first group of fault detection loops are used for monitoring the instantaneous state of the switching value sensor in a normally open state in the signal loop;
the second group of fault detection loops are used for monitoring the instantaneous state of the switching value sensor in a normally closed state in the signal loop.
Optionally, the first set of fault detection loops includes: the first branch and the second branch are connected in parallel;
the first branch circuit comprises: the first switch, the first positive wiring terminal, the first negative wiring terminal and the self-locking relay; the first switch, the first positive wiring terminal, the first negative wiring terminal and the self-locking relay are connected in series one by one;
the second branch includes: the second switch, the second positive wiring terminal, the second negative wiring terminal and the first alarm lamp; the self-locking relay contact switch is connected with one end of the second switch, and the other end of the second switch is connected with the second positive wiring terminal, the second negative wiring terminal and the first alarm lamp in series one by one.
Optionally, the first group of fault detection loops further includes: a first diode;
the positive pole of first diode is connected first negative binding post, the negative pole of first diode is connected the latching relay.
Optionally, the first group of fault detection loops further includes: a second diode;
the positive pole of the second diode is connected with the second negative connecting terminal, and the negative pole of the second diode is connected with the first alarm lamp.
Optionally, the second set of fault detection loops includes: the third branch and the fourth branch are connected in parallel;
the third branch includes: the third switch, the third positive wiring terminal, the third negative wiring terminal and the delay relay; the third switch, the third positive wiring terminal, the third negative wiring terminal and the delay relay are connected in series one by one;
the fourth branch includes: a second alarm lamp; and the delay relay contact switch is connected with the second alarm lamp.
Optionally, the second set of fault detection loops further includes: a third diode;
and the positive electrode of the third diode is connected with the third negative connecting terminal, and the negative electrode of the third diode is connected with the delay relay.
Optionally, the second set of fault detection loops further includes: a fourth diode;
the positive pole of the fourth diode is connected with the second alarm lamp, and the negative pole of the second diode is connected with one end of the third branch.
The beneficial technical effects of this application lie in:
the device for monitoring the instantaneous state of the switching value sensor can monitor whether the switching value sensor is in a normally-open state or a normally-closed state in a signal loop, and has high practicability; diodes are designed in each loop, so that the short circuit fault of the signal loop where the switching value sensor is positioned can be effectively avoided; the two groups of monitoring loops are provided with independent switches, so that the monitoring of the normally open or normally closed state of the switching value sensor can be independently completed, and the two groups of monitoring loops can also be used simultaneously; the number of monitoring loops can be increased according to actual demands, so that the states of a plurality of switching value sensors can be monitored simultaneously, and the applicability is high; for monitoring the normally open state of the switching value sensor, a self-locking relay is used, so that the state after the change can be kept all the time; the normally closed state of the switching value sensor is monitored, a delay relay is used, delay time can be set according to actual requirements, and the monitoring requirements for state changes are met.
Drawings
Fig. 1 is a schematic structural diagram of an instantaneous state monitoring device of a switching value sensor according to an embodiment of the present application.
In the figure:
1-a first switch; 2-a first positive terminal; 3-a first negative terminal; 4-a first diode; 5-a self-locking relay; 6-a self-locking relay contact switch; 7-a second switch; 8-a second positive terminal; 9-a second negative terminal; 10-a second diode; 11-a first warning lamp; 12-a third switch; 13-a third positive terminal; 14-a third negative terminal; 15-a third diode; 16-delay relay; 17-delay relay contact switch; 18-a second alarm lamp; 19-fourth diode.
Detailed Description
In order to better understand the present application, a clear and complete description of the technical solutions in the embodiments of the present application will be provided below with reference to the drawings in the embodiments of the present application. It will be apparent that the embodiments described below are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by a person skilled in the art without the exercise of inventive faculty, are within the scope of protection of the present application, based on the embodiments described herein.
Referring to fig. 1, the schematic structure of a device for monitoring the instantaneous state of a switching value sensor according to an embodiment of the present application is shown.
The embodiment of the application provides a switching value sensor instantaneous state monitoring device, includes: a first set of fault detection loops and a second set of fault detection loops in parallel;
the first group of fault detection loops are used for monitoring the instantaneous state of the switching value sensor in a normally open state in the signal loop;
and the second group of fault detection loops are used for monitoring the instantaneous state of the switching value sensor in a normally closed state in the signal loop.
In some possible implementations of embodiments of the present application, a first set of fault detection loops includes: the first branch and the second branch are connected in parallel;
a first branch comprising: the device comprises a first switch 1, a first positive connecting terminal 2, a first negative connecting terminal 3 and a self-locking relay 5; the first switch 1, the first positive wiring terminal 2, the first negative wiring terminal 3 and the self-locking relay 5 are connected in series one by one;
a second leg, comprising: a second switch 7, a second positive terminal 8, a second negative terminal 9 and a first warning lamp 11; the latching relay contact switch 6 is connected with one end of the second switch 7, and the other end of the second switch 7 is connected with the second positive wiring terminal 8, the second negative wiring terminal 9 and the first alarm lamp 11 in series one by one.
The self-locking relay contact switch 6 is a contact switch of the self-locking relay 5; the latching relay 5 is a normally open contact.
In one example, to avoid a short-circuit fault in a signal circuit in which the switching value sensor is located, the first group of fault detection circuits further includes: a first diode 4;
the positive pole of the first diode 4 is connected with the first negative connecting terminal 3, and the negative pole of the first diode 4 is connected with the latching relay 5.
In another example, to avoid a short-circuit fault in a signal circuit in which the switching value sensor is located, the first group of fault detection circuits further includes: a second diode 10;
the positive pole of the second diode 10 is connected with the second negative connecting terminal 9, and the negative pole of the second diode 10 is connected with the first alarm lamp 11.
In the specific implementation, the first positive connecting terminal 2 and the first negative connecting terminal 3 are connected in series into a switching value signal loop; the second positive wiring terminal 8 and the second negative wiring terminal 9 are connected in parallel to two ends of the switching value sensor; the first switch 1 and the second switch 7 are sequentially closed, and the first alarm lamp 11 is in a non-lighting state when normal;
when the state of the switching value sensor is changed from open to closed instantaneously; the self-locking relay 5 is electrified, the self-locking relay contact switch 6 is closed, the first alarm lamp 11 is lightened, and the first alarm lamp 11 is always lightened because the self-locking relay 5 is in a self-locking state; from the first warning lamp 11 being turned on, it can be determined that the state of the switching value sensor has instantaneously changed from open to closed.
In some possible implementations of embodiments of the present application, the second set of fault detection loops includes: the third branch and the fourth branch are connected in parallel;
a third branch comprising: a third switch 12, a third positive connection terminal 13, a third negative connection terminal 14, and a delay relay 16; the third switch 12, the third positive wiring terminal 13, the third negative wiring terminal 14 and the delay relay 16 are connected in series one by one;
a fourth branch comprising: a second warning lamp 18; the delay relay contact switch 17 is connected with a second alarm lamp 18.
Wherein the delay relay contact switch 17 is a contact switch of the delay relay 16; the delay relay 16 is a normally open contact, and the delay time is set according to actual conditions.
In one example, to avoid a short-circuit fault in a signal circuit in which the switching value sensor is located, the second group of fault detection circuits further includes: a third diode 15;
the positive pole of the third diode 15 is connected with the third negative connecting terminal 14, and the negative pole of the third diode 15 is connected with the delay relay 16.
In another example, to avoid a short-circuit fault in a signal circuit in which the switching value sensor is located, the second group of fault detection circuits further includes: a fourth diode 19;
the positive pole of the fourth diode 19 is connected with the second alarm lamp 18, and the negative pole of the second diode 19 is connected with one end of the third branch.
In the specific implementation, the third positive wiring terminal 13 and the third negative wiring terminal 14 in the loop are connected in series to the signal loop where the switching value sensor is located, the third switch 12 is closed, and the second alarm lamp 18 is in a non-lighting state before the delay time range set by the delay relay 16; when the time exceeds the delay time range set by the delay relay 16; the second warning lamp 18 lights up;
when the state of the switching value sensor is instantaneously changed from the off to the off state; the delay relay 16 is powered off, the delay relay contact switch 17 is opened, and the second alarm lamp 18 is turned off; the second warning lamp 18 is in an off state until the delay time range set by the delay relay 16; from the off state of the second warning lamp 18, it can be determined that the state of the switching value sensor has instantaneously changed from off to off.
When the instantaneous state change of the switching value sensor which is normally open is monitored in the switching value signal loop:
1) The first positive wiring terminal 2 and the first negative wiring terminal 3 are respectively connected in series and connected into a switching value signal loop;
2) Respectively connecting a second positive wiring terminal 8 and a second negative wiring terminal 9 in parallel to two ends of the switching value sensor;
3) The first switch 1 and the second switch 7 are turned off in sequence, and the first alarm lamp 11 is in a non-lighting state;
4) When the state of the switching value sensor is changed from on to off instantaneously; the self-locking relay 5 is powered on, the self-locking relay contact switch 6 is closed, the first alarm lamp 11 is lightened, and the first alarm lamp 11 is kept lightened because the self-locking relay 5 is in a self-locking state;
5) The maintenance personnel can judge that the state of the switching value sensor is changed from on to off instantaneously according to the lighting of the first alarm lamp 11.
When monitoring the instantaneous state change of the switching value sensor which is normally closed in the switching value signal loop:
1) The third positive connecting terminal 13 and the third negative connecting terminal 14 are respectively connected in series and connected into a switching value signal loop;
2) Turning off the third switch 12 for a time before the delay time range set by the delay relay 16, the second warning lamp 18 is in a non-lighted state; when the time exceeds the delay time range set by the delay relay 16; the second warning lamp 18 lights up;
3) When the state of the switching value sensor is changed from closed to open instantaneously; the delay relay 16 is powered off, the delay relay contact switch 17 is opened, and the second alarm lamp 18 is turned off; before the delay time range set by the delay relay 16; the second warning lamp 18 is always in an off state;
4) The maintenance person can judge that the state of the switching value sensor is changed from closed to open instantaneously according to the occurrence of the over-extinguishing state of the second alarm lamp 18.
According to the two conditions, the state of the switching value sensor is monitored, so that the instantaneous state change of the switching value sensor can be rapidly and accurately monitored.
While the present application has been described in detail with reference to the drawings and the embodiments, the present application is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present application. None of the details described in this application may be prior art.
Claims (7)
1. A switching value sensor transient state monitoring device, the device comprising: a first set of fault detection loops and a second set of fault detection loops in parallel;
the first group of fault detection loops are used for monitoring the instantaneous state of the switching value sensor in a normally open state in the signal loop;
the second group of fault detection loops are used for monitoring the instantaneous state of the switching value sensor in a normally closed state in the signal loop.
2. The switching value sensor transient state monitoring device according to claim 1, wherein the first group of fault detection loops comprises: the first branch and the second branch are connected in parallel;
the first branch circuit comprises: the first switch, the first positive wiring terminal, the first negative wiring terminal and the self-locking relay; the first switch, the first positive wiring terminal, the first negative wiring terminal and the self-locking relay are connected in series one by one;
the second branch includes: the second switch, the second positive wiring terminal, the second negative wiring terminal and the first alarm lamp; the self-locking relay contact switch is connected with one end of the second switch, and the other end of the second switch is connected with the second positive wiring terminal, the second negative wiring terminal and the first alarm lamp in series one by one.
3. The switching value sensor transient state monitoring device according to claim 2, wherein the first group of fault detection loops further comprises: a first diode;
the positive pole of first diode is connected first negative binding post, the negative pole of first diode is connected the latching relay.
4. The switching value sensor transient state monitoring device according to claim 2, wherein the first group of fault detection loops further comprises: a second diode;
the positive pole of the second diode is connected with the second negative connecting terminal, and the negative pole of the second diode is connected with the first alarm lamp.
5. The switching value sensor transient state monitoring device of claim 4, wherein said second set of fault detection loops comprises: the third branch and the fourth branch are connected in parallel;
the third branch includes: the third switch, the third positive wiring terminal, the third negative wiring terminal and the delay relay; the third switch, the third positive wiring terminal, the third negative wiring terminal and the delay relay are connected in series one by one;
the fourth branch includes: a second alarm lamp; and the delay relay contact switch is connected with the second alarm lamp.
6. The switching value sensor transient state monitoring device of claim 5, wherein said second set of fault detection loops further comprises: a third diode;
and the positive electrode of the third diode is connected with the third negative connecting terminal, and the negative electrode of the third diode is connected with the delay relay.
7. The switching value sensor transient state monitoring device of claim 5, wherein said second set of fault detection loops further comprises: a fourth diode;
the positive pole of the fourth diode is connected with the second alarm lamp, and the negative pole of the second diode is connected with one end of the third branch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223469379.XU CN219016517U (en) | 2022-12-22 | 2022-12-22 | Instantaneous state monitoring device of switching value sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223469379.XU CN219016517U (en) | 2022-12-22 | 2022-12-22 | Instantaneous state monitoring device of switching value sensor |
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| Publication Number | Publication Date |
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| CN219016517U true CN219016517U (en) | 2023-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202223469379.XU Active CN219016517U (en) | 2022-12-22 | 2022-12-22 | Instantaneous state monitoring device of switching value sensor |
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| CN (1) | CN219016517U (en) |
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