CN213423346U - Electric heating pipe life test control cabinet - Google Patents
Electric heating pipe life test control cabinet Download PDFInfo
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- CN213423346U CN213423346U CN202021731055.7U CN202021731055U CN213423346U CN 213423346 U CN213423346 U CN 213423346U CN 202021731055 U CN202021731055 U CN 202021731055U CN 213423346 U CN213423346 U CN 213423346U
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- electric heating
- power supply
- test
- heating pipe
- heating tube
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Abstract
The utility model relates to an electric heating tube life test control cabinet, which comprises a mains supply cabinet, wherein the mains supply cabinet converts AC220V into DC24V through a switching power supply to supply power for PLC, and the electric heating tube life test control cabinet also comprises a variable frequency voltage regulating power supply cabinet, and a main switch and a current transmitter for detecting leakage current are arranged between the variable frequency voltage regulating power supply cabinet and the switching power supply; each phase circuit in a three-phase circuit formed by the current transducer is independently connected with a plurality of groups of electric heating tube test interfaces which are arranged in parallel; the PLC is connected with a touch screen for displaying information and setting operation parameters, and the PLC controls the on-off of the circuit of each electric heating pipe test interface according to the setting to complete the test of each electric heating pipe. The utility model discloses based on PLC and touch-sensitive screen technique, can accomplish on the touch-sensitive screen to the inside experiment data input of PLC according to the experiment needs, realize the electric heating pipe life-span test time, the data setting such as cycle number, accomplish electric heating pipe automatic life test work when unmanned monitoring.
Description
Technical Field
The utility model relates to an electric heating pipe test technical field specifically is an electric heating pipe life-span test switch board.
Background
As an electric element, after production and processing are finished, the electric heating tube needs to be subjected to quality inspection so as to test the performances of the heating service life and the like, and the quality of a product can reach the standard. Traditional electric heating pipe test equipment adopts simple circular telegram mode to test electric heating pipe more, and the test pattern is single, can't self set for parameters such as ohmic heating time, heating number of times as required, and adaptability is poor, and degree of automation is low, can not satisfy large batch electric heating pipe capability test demand.
Disclosure of Invention
An object of the utility model is to provide an electric heating pipe life-span test switch board to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides an electric heating pipe life-span test switch board, includes the mains supply cabinet, the mains supply cabinet passes through switching power supply and converts AC220V into DC24V for the PLC power supply, still includes frequency conversion voltage regulating power supply cabinet, be equipped with master switch and detect leakage current's current transducer between frequency conversion voltage regulating power supply cabinet and the switching power supply.
Each phase circuit in the three-phase circuit formed by the current transducer is independently connected with a plurality of groups of electric heating tube test interfaces which are arranged in parallel.
The PLC is connected with a touch screen for displaying information and setting operation parameters, and the PLC controls the on-off of the circuit of each electric heating pipe test interface according to the setting to complete the test of each electric heating pipe.
As a further improvement, a plurality of groups of first station electric heater test interfaces are connected between the first phase port of the current transmitter and the zero line port.
And a plurality of groups of second station electric heater test interfaces are connected between the second phase port of the current transmitter and the zero line port in parallel.
And a plurality of groups of third station electric heater test interfaces are connected between the third phase port of the current transmitter and the zero line port in parallel.
As a further improvement of the utility model, all have concatenated an ac contactor's contact on every electric heating pipe test interface of group, insert on DC 24V's OV interface after PLC's output and parallel arrangement's a plurality of groups auxiliary relay's the coil connection.
The contact of any one of the intermediate relays in the plurality of groups is connected with the state indicator lamp in series and then is connected to the commercial power supply cabinet.
The contact points of the other intermediate relays are respectively connected with a coil of an alternating current contactor in series correspondingly and then are connected to a mains supply cabinet, and the coil of each alternating current contactor controls the contact point of the corresponding alternating current contactor.
As a further improvement, a first circuit breaker is connected between the zero end of the mains supply cabinet and the live wire.
As a further improvement, the first live wire end of first circuit breaker output has concatenated the third live wire end that forms the mains power supply cabinet behind the fuse.
As a further improvement, the utility model is connected with radiator fan between the first live wire end of first circuit breaker output and zero line.
As a further improvement, the second circuit breaker is connected in series on radiator fan and every electric heating pipe of group test interface.
As a further improvement, the utility model discloses a current transformer has all been concatenated on every electric heating pipe test interface of group, and every current transformer all is connected with and is arranged in detecting and showing the electric parameter table of voltage, electric current and power in the test.
As a further improvement of the utility model, the coils of each AC contactor are all connected in parallel with a status indicator lamp II.
As a further improvement of the utility model, a status indicator lamp three is connected in parallel between the zero end N1 of the mains supply cabinet and the third live wire end.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses based on PLC and touch-sensitive screen technique, can accomplish on the touch-sensitive screen to the inside experiment data input of PLC according to the experiment needs, realize the electric heating pipe life-span test time, the data setting such as cycle number, accomplish electric heating pipe automatic life test work when unmanned monitoring.
Drawings
Fig. 1 is a schematic diagram of a circuit structure of the utility model connecting the commercial power cabinet and the switching power supply;
fig. 2 is a schematic diagram of a circuit structure of the PLC of the present invention connected to the touch screen and the intermediate relay;
fig. 3 is a schematic diagram of a circuit structure of the connection between the intermediate relay contact and the coil of the ac contactor according to the present invention;
fig. 4 is a schematic structural view of the connection between the variable frequency and voltage regulation power cabinet and the current transducer of the present invention;
fig. 5 is a schematic circuit structure diagram of an electric heating tube testing interface of the first station in the embodiment.
Detailed Description
Referring to fig. 1-5, in an embodiment of the present invention, an electric heating tube life test control cabinet includes a mains supply cabinet, the mains supply cabinet converts AC220V into DC24V through a switch power supply to supply power for PLC, and further includes a frequency conversion voltage regulation power supply cabinet, a main switch QF0 and a current transmitter for detecting leakage current are disposed between the frequency conversion voltage regulation power supply cabinet and the switch power supply.
The utility model provides a frequency conversion voltage regulating power cabinet provides frequency, voltage adjustable power for experimental facilities.
Each phase circuit in the three-phase circuit formed by the current transducer is independently connected with a plurality of groups of electric heating tube test interfaces which are arranged in parallel.
As shown in fig. 2, the PLC is connected to a touch screen for displaying information and setting operation parameters, and the PLC controls the on/off of the circuit of each electric heating tube test interface according to the setting. When the device is used, a worker can complete the input of the test data inside the PLC on the touch screen according to the requirement of actual test, so that the data setting of the service life test time, the cycle times and the like of the electric heating pipe is realized, and the automatic service life test work of the electric heating pipe when the electric heating pipe is monitored by no person is completed.
As shown in fig. 5, a plurality of groups of first station electric heater test interfaces, namely A, B in the figure, are connected in parallel between the first phase port 1U and the neutral port 1N of the current transmitter.
And a plurality of groups of second station electric heater test interfaces are connected between the second phase port 1V and the zero line port 1N of the current transmitter in parallel, and the specific circuit arrangement is the same as that of the plurality of groups of first station electric heater test interfaces in the figure 5.
And a plurality of groups of third station electric heater test interfaces are connected between the third phase port 1W and the zero line port 1N of the current transmitter in parallel, and the specific circuit arrangement is the same as that of the plurality of groups of first station electric heater test interfaces in the figure 5.
When the detection is needed, the corresponding electric heaters can be connected to the first station electric heater test interface, the second station electric heater test interface and the third station electric heater test interface as required, and then the electric heater test of the station is realized through the PLC control.
And the output end of the PLC is connected with coils of a plurality of groups of intermediate relays which are arranged in parallel and then is connected to the OV interface of the DC 24V.
For example, as shown in fig. 2, as an embodiment, the interface 0 of the PLC output terminal is connected to the OV interface of DC24V, and the interfaces Q0.0 to Q0.6 of the PLC are respectively connected to the coil of the first intermediate relay KA1 to the coil of the seventh intermediate relay KA7 and then connected to the OV interface of DC 24V; and the +24V interface of the DC24V is connected with the 2L +2M interface of the PLC.
The contact of any one of the intermediate relays is connected in series with a state indicator lamp P1 and then is connected to a commercial power supply cabinet. As described in fig. 2, the contact of the seventh intermediate relay KA7 is connected in series with the status indicator lamp one P1 as an indication of the operating state.
The contact points of the other intermediate relays are respectively connected with a coil of an alternating current contactor in series correspondingly and then are connected to a mains supply cabinet, and the coil of each alternating current contactor controls the contact point of the corresponding alternating current contactor, so that the on-off of the test interface circuit of each electric heating pipe is controlled.
As an example shown in fig. 2, seven intermediate relays are taken as an example, wherein the contacts of the first intermediate relay KA 1-the sixth intermediate relay KA6 are respectively connected in series with the coil of the first ac contactor KM 1-the coil of the sixth ac contactor KM6, and the coils of the first intermediate relay KA 1-the sixth intermediate relay KA6 respectively control the contacts of the first intermediate relay KA 1-the sixth intermediate relay KA 6.
A first breaker QF7 is connected between the zero end N1 and the live wire of the mains supply cabinet.
And a first live wire end L1 output by the first circuit breaker QF7 is connected in series with a fuse to form a third live wire end L3 of the mains supply cabinet.
As shown in fig. 1, a heat dissipation fan F1 is connected between the first live wire end L1 output from the first circuit breaker QF7 and the neutral wire, and is capable of ventilating and dissipating heat from the inside.
And the cooling fan F1 and each group of electric heating pipe test interfaces are connected with a second circuit breaker in series.
The utility model provides a first circuit breaker and second circuit breaker all are used for realizing transshipping or short-circuit protection.
Each group of electric heating pipe test interfaces is connected in series with a current transformer, such as TA1 and TA2 in fig. 5, for detecting load current, and each current transformer is connected with an electric parameter meter for detecting and displaying voltage, current and power in the test.
The coils of the alternating current contactors are connected with the second state indicator lamps in parallel and respectively correspond to HL2, HL3, HL4, HL5, HL6 and HL7 in the figure 3, so that the energization condition of the coils of the alternating current contactors can be reflected, and the working state of each station can be shown.
And a status indicator lamp III HL1 is connected in parallel between the zero end N1 of the mains supply cabinet and the third live wire end L3.
In a normal standby state, the status indicator lamp SanHL 1 is lightened for power supply indication; the status indicator light P1 is on, which can indicate sudden stop.
During specific implementation, an operator firstly installs the electric heating pipe to be tested on the corresponding electric heating pipe test interface;
then, a main switch QF0 is turned on, and 24V of direct current is generated by 220V of alternating current through a switching power supply to supply power to the touch screen and the PLC;
then, setting the cycle times and cycle time intervals of the electric heating pipe test of each station on the touch screen, for example, electrifying for three hours and powering off for three hours;
after the setting is finished, a PLC sends an instruction to control the coils of the first intermediate relay KA1 to the coils of the seventh intermediate relay KA7 to work correspondingly, the coils of the first intermediate relay KA1 to the contacts of the seventh intermediate relay KA7 are controlled to be closed by the corresponding coils, at the moment, the coil of the first alternating current contactor and the coil of the sixth alternating current contactor are electrified or an acousto-optic prompting lamp P1 works, the coil of the first alternating current contactor and the coil of the sixth alternating current contactor are electrified, the contacts of the alternating current contactor on the corresponding station can be closed, a circuit of the corresponding station is connected, and the electric heating pipe of the station is electrified and tested.
The above-mentioned, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the present invention, the concept of replacing or changing with equal ones should be covered within the protection scope of the present invention.
Claims (10)
1. The utility model provides an electric heating pipe life test switch board, includes the mains supply cabinet, the mains supply cabinet passes through switching power supply and converts AC220V into DC24V and is the PLC power supply, its characterized in that: the power supply cabinet is characterized by also comprising a variable-frequency voltage-regulating power supply cabinet, wherein a main switch (QF0) and a current transmitter for detecting leakage current are arranged between the variable-frequency voltage-regulating power supply cabinet and the switching power supply;
each phase circuit in the three-phase circuit formed by the current transducer is independently connected with a plurality of groups of electric heating tube test interfaces which are arranged in parallel;
the PLC is connected with a touch screen for displaying information and setting operation parameters, and the PLC controls the on-off of the circuit of each electric heating pipe test interface according to the setting to complete the test of each electric heating pipe.
2. The electric heating tube service life test control cabinet according to claim 1, characterized in that: a plurality of groups of first station electric heater test interfaces are connected between a first phase port (1U) and a zero line port (1N) of the current transmitter in parallel;
a plurality of groups of second station electric heater test interfaces are connected between a second phase port (1V) of the current transmitter and a zero line port (1N) in parallel;
and a plurality of groups of third station electric heater test interfaces are connected between a third phase port (1W) of the current transmitter and a neutral port (1N) in parallel.
3. The electric heating tube service life test control cabinet according to claim 1, characterized in that: the output end of the PLC is connected with coils of a plurality of groups of intermediate relays which are arranged in parallel and then is connected to the OV interface of the DC 24V;
the contact of any one of the plurality of groups of intermediate relays is connected with a state indicator lamp in series and then is connected to a mains supply cabinet;
the contact points of the other intermediate relays are respectively connected with a coil of an alternating current contactor in series correspondingly and then are connected to a mains supply cabinet, and the coil of each alternating current contactor controls the contact point of the corresponding alternating current contactor.
4. The electric heating tube service life test control cabinet according to claim 1, characterized in that: a first circuit breaker is connected between the zero terminal (N1) and the live wire of the mains power supply cabinet.
5. The electric heating tube life test control cabinet according to claim 4, characterized in that: and a first live wire end (L1) output by the first circuit breaker is connected with a fuse in series to form a third live wire end (L3) of the mains supply cabinet.
6. The electric heating tube life test control cabinet according to claim 5, characterized in that: a heat radiation fan (F1) is connected between a first live wire end (L1) of the first breaker output and a zero wire.
7. The electric heating tube life test control cabinet of claim 6, characterized in that: and the cooling fan (F1) and each group of electric heating pipe test interfaces are connected with a second circuit breaker in series.
8. The electric heating tube service life test control cabinet according to claim 1, characterized in that: each group of electric heating pipe test interfaces is connected with a current transformer in series, and each current transformer is connected with an electric parameter meter for detecting and displaying voltage, current and power in the test.
9. The electric heating tube life test control cabinet according to claim 3, characterized in that: and the coils of the alternating current contactors are connected with a second status indicator lamp in parallel.
10. The electric heating tube life test control cabinet according to claim 5, characterized in that: and a third status indicator lamp (HL1) is connected in parallel between the zero end (N1) and the third live wire end (L3) of the mains supply cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021731055.7U CN213423346U (en) | 2020-08-18 | 2020-08-18 | Electric heating pipe life test control cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021731055.7U CN213423346U (en) | 2020-08-18 | 2020-08-18 | Electric heating pipe life test control cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213423346U true CN213423346U (en) | 2021-06-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021731055.7U Active CN213423346U (en) | 2020-08-18 | 2020-08-18 | Electric heating pipe life test control cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213423346U (en) |
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2020
- 2020-08-18 CN CN202021731055.7U patent/CN213423346U/en active Active
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