Door groove heating electrical control system

Abstract

The invention discloses a door slot heating electrical control system, which relates to the field of circuit control and comprises a miniature circuit breaker, a temperature control box and a main ground wire PE, the power supply end of the miniature circuit breaker is electrically connected with a power supply incoming line, and the load end is electrically connected with the temperature control box for controlling the on-off state of a load end main circuit; the temperature control box is further connected with the main ground wire and comprises a first temperature rise module, a second temperature rise module, a third temperature rise module, a fourth temperature rise module, a fifth temperature rise module and a sixth temperature rise module. Through temperature detection, the heating efficiency of the heating wire is dynamically adjusted according to different ice layer thicknesses, the ice melting rate between the ice layers with different thicknesses is kept, and the energy utilization effect is improved.

Description

Technical Field

[0001] The invention relates to the field of circuit control, in particular to a door slot heating electrical control system. Background Art

[0002] The outdoor temperature of the hydropower plant is below 0℃ in winter. The low temperature will cause ice to form on the gate water seal surface and the gate side rail surface, which will cause the two surfaces to stick together. When the gate needs to be opened to release water in winter, the ice layer on the water seal and the side rail surface must be cleaned before opening the gate, otherwise the water seal will tear, causing the gate to leak.

[0003] The existing gate slot heating control system is unable to monitor the temperature status of the gate water seal surface and the gate side rail surface, causing ice to form on the gate water seal surface and the gate side rail, resulting in low ice-melting efficiency and high heat loss, which cannot meet on-site usage requirements.

[0004] In view of the above problems, the present invention provides a door slot heating electrical control system to solve the above problems. Summary of the invention

[0005] To achieve the above object, the present invention provides the following technical solutions: a door slot heating electrical control system, comprising: a miniature circuit breaker, a temperature control box, and a main ground wire PE;

[0006] The power supply end of the miniature circuit breaker is electrically connected to the power supply line, and the load end is electrically connected to the temperature control box, so as to control the on-off state of the main circuit of the load end; the main circuit is a three-wire four-way circuit, and the three-wire four-phase circuit is: a first live wire A1, a second live wire B2, a third live wire C1 and a neutral wire N;

[0007] The temperature control box is also connected to the main ground line, and includes a first temperature rise module, a second temperature rise module, a third temperature rise module, a fourth temperature rise module, a fifth temperature rise module and a sixth temperature rise module;

[0008] Among them, the connection terminals of the first temperature rise module and the third temperature rise module are connected to the live wire A1 and the neutral wire N, the connection terminals of the second temperature rise module and the fourth temperature rise module are connected to the live wire B1 and the neutral wire N, and the connection terminals of the third temperature rise module and the sixth temperature rise module are connected to C1 and the neutral wire N.

[0009] Further, preferably, the first temperature rise module and the third temperature rise module have the same circuit connection, the second temperature rise module and the fourth temperature rise module have the same circuit connection, and the third temperature rise module and the fourth temperature rise module have the same circuit connection.

[0010] Further, preferably, the first temperature rise module includes: a surge protector, a contactor, a heating module, and a ground wire;

[0011] The power supply end of the surge protector is connected to the live wire A1 and the neutral wire N, and the load end is connected to the power supply end of the contactor, and the contactor is used to control the on and off of the heating module circuit;

[0012] The heating module includes a heating wire and an RTD temperature control component, and the ground wire is connected to the heating wire and the RTD temperature control component respectively.

[0013] Further, preferably, the second temperature rise module has the same internal connection circuit as the first temperature rise module, and the difference is that the power supply end of the surge protector is connected to the live wire B1 and the neutral wire N.

[0014] Further, preferably, the third temperature rise module has the same internal connection circuit as the first temperature rise module, and the difference is that the power supply end of the surge protector is connected to the live wire C1 and the neutral wire N.

[0015] Further, preferably, the RTD temperature control component includes: an indicator light HL, a knob switch SA, an AC contactor KM1, an AC contactor KM2, a button switch SB1L, a button switch SB2L, an indicator light SB1, an indicator light SB2, a platinum thermal resistor Pt100, a thermostat WKQ, and a coil L;

[0016] The indicator light HL is electrically connected to the live wire and the neutral wire N, one end of the AC contactor KM2 is connected to the live wire, and the other end is electrically connected to the indicator light SB1L, the other end of the indicator light SB1L is connected to one end of the heating wire, and the heating wire is connected to the indicator light SB1L of the next adjacent heating module (4);

[0017] The input end of the rotary switch SA is connected to the live wire. The rotary switch SA is divided into a manual adjustment mode and an automatic adjustment mode. The output end of the manual adjustment mode is connected to one end of the rotary switch SB1, the other end of the rotary switch SB1 is connected to one end of the rotary switch SB2, the other end of the rotary switch SB2 is connected to one end of the coil E, and the other end of the coil E is connected to the heating wire; the output end of the automatic adjustment mode is connected to the contact 9 of the thermostat WKQ, the contact 8 of the thermostat WKQ is connected to one end of the indicator light SB2L, and the other end of the indicator light SB2L is connected to the heating wire;

[0018] The contact 13 of the thermostat WKQ is connected to the live wire, the contact 14 is connected to the neutral wire N, and the contacts 1, 2 and 3 are connected to the platinum thermal resistor Pt100.

[0019] Further, preferably, the AC contactor KM2 is arranged in parallel on the knob switch SB2, and the output end of the AC contactor KM2 is also connected to the indicator light SB2L.

[0020] Further, preferably, a fuse FU is arranged in series on the front live wire of the first heating module.

[0021] Further, preferably, the heating wire is also connected to the neutral line N.

[0022] Further, preferably, the power protector consists of a leakage protector and a small circuit breaker.

[0023] Compared with the prior art, the present invention provides a door slot heating electrical control system, which has the following beneficial effects:

[0024] In the present invention, when the knob switch SA is in automatic mode and is detected by the platinum thermal resistor Pt100 and analyzed by the thermostat WKQ to be ≤0°C, the contacts 8 and 9 in the thermostat WKQ are closed, so that the coil E is energized, and the heating wire begins to conduct and heat. At the same time, the temperature is monitored by the platinum thermal resistor Pt100, so that the current in the heating wire is adjusted by the thermostat WKQ, that is, the heating efficiency of the heating wire is adjusted, thereby maintaining the melting rate between ice layers of different thicknesses and improving the energy utilization effect.

[0025] When the temperature controller WKQ analyzes that the temperature is between 0 and 5°C, contact 8 and contact 9 in the thermostat WKQ are disconnected, causing the coil E to lose power. At the same time, the AC contactor KM1 is disconnected, and the heating wire stops heating, further improving the purpose of energy saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is an overall schematic diagram of a door slot heating electrical control system;

[0027] Figure 2 This is a schematic diagram of the circuit connection of the first temperature rise module of a door slot heating electrical control system;

[0028] Figure 3 The diagram is a circuit connection diagram of the RTD temperature control component of a door slot heating electrical control system.

[0029] In the figure: 1. Miniature circuit breaker; 2. Power protector; 3. Contactor; 4. Temperature rise module; 5. Ground wire. DETAILED DESCRIPTION

[0030] Reference Figures 1 to 3 ,The present invention provides a technical solution: a door slot heating electrical control system, comprising: a miniature circuit breaker 1, a temperature control box, and a main ground wire PE;

[0031] The power supply end of the miniature circuit breaker 1 is electrically connected to the power supply line, and the load end is electrically connected to the temperature control box, so as to control the on-off state of the main circuit of the load end; the main circuit is a three-wire four-way circuit, and the three-wire four-phase circuit is: a first live wire A1, a second live wire B2, a third live wire C1 and a neutral wire N;

[0032] The temperature control box is also connected to the main ground line, and includes a first temperature rise module, a second temperature rise module, a third temperature rise module, a fourth temperature rise module, a fifth temperature rise module and a sixth temperature rise module;

[0033] Among them, the connection terminals of the first temperature rise module and the third temperature rise module are connected to the live wire A1 and the neutral wire N, the connection terminals of the second temperature rise module and the fourth temperature rise module are connected to the live wire B1 and the neutral wire N, and the connection terminals of the third temperature rise module and the sixth temperature rise module are connected to C1 and the neutral wire N.

[0034] The first temperature rise module, the second temperature rise module and the third temperature rise module are evenly fixed at the gate water seal height respectively, and the fourth temperature rise module, the fifth temperature rise module and the sixth temperature rise module are correspondingly fixed at the gate side rail. When deicing is performed in manual mode, the power supply is turned on through the miniature circuit breaker, so that the temperature control box controls the first temperature rise module, the second temperature rise module, the third temperature rise module, the fourth temperature rise module, the fifth temperature rise module and the sixth temperature rise module to heat the ice-sealed part of the gate and the gate side door, thereby performing deicing operations to prevent the gate from sticking to the surface of the side rail.

[0035] As a preferred embodiment, the first temperature rise module and the third temperature rise module have the same circuit connection, the second temperature rise module and the fourth temperature rise module have the same circuit connection, and the third temperature rise module and the fourth temperature rise module have the same circuit connection.

[0036] It should be noted that due to the continuous flow of water and temperature changes on the surface of the gate side rails on the gate water seal, ice layers of different thicknesses are easily formed at different locations. By controlling the temperature rise modules at different locations, targeted ice melting operations can be achieved, that is, the power of the temperature rise module is increased where the ice layer is thicker, and the power of the temperature rise module is reduced where the ice layer is thinner, so that the ice layers can complete the ice melting operation synchronously within a similar time, thereby effectively improving the ice melting operation while reducing energy consumption.

[0037] As a preferred embodiment, the first temperature rise module includes: a surge protector 2, a contactor 3, a heating module 4, and a ground wire 5;

[0038] The power supply end of the surge protector 2 is connected to the live wire A1 and the neutral wire N, and the load end is connected to the power supply end of the contactor 3, and the contactor 3 is used to control the on-off of the circuit of the heating module 4;

[0039] The heating module 4 includes a heating wire and an RTD temperature control component, and the ground wire 5 is connected to the heating wire and the RTD temperature control component respectively.

[0040] As a preferred embodiment, the second temperature rise module has the same internal connection circuit as the first temperature rise module, the difference being that the power supply end of the surge protector 2 is connected to the live wire B1 and the neutral wire N.

[0041] As a preferred embodiment, the third temperature rise module has the same internal connection circuit as the first temperature rise module, the difference being that the power supply end of the surge protector 2 is connected to the live wire C1 and the neutral wire N.

[0042] As a preferred embodiment, the power protector 2 is composed of a leakage protector and a small circuit breaker.

[0043] It should be noted that when the ice melting operation is in normal working condition, if the first temperature rise module or the other temperature rise modules have leakage, the power protector 2 can disconnect the corresponding temperature rise module circuit in time to prevent leakage and injury, and prevent the continuous consumption of energy. After the leakage occurs, the corresponding RTD temperature control component will issue a light alarm to remind maintenance personnel to perform targeted maintenance in a timely manner.

[0044] It should be noted that when inspecting or repairing the heating module 4, the contactor 3 should be kept in the disconnected state to prevent electric shock accidents.

[0045] As a preferred embodiment, the RTD temperature control component includes: an indicator light HL, a knob switch SA, an AC contactor KM1, an AC contactor KM2, a button switch SB1L, a button switch SB2L, an indicator light SB1, an indicator light SB2, a platinum thermal resistor Pt100, a thermostat WKQ, and a coil L;

[0046] The indicator light HL is electrically connected to the live wire and the neutral wire N, one end of the AC contactor KM2 is connected to the live wire, and the other end is electrically connected to the indicator light SB1L, the other end of the indicator light SB1L is connected to one end of the heating wire, and the heating wire is connected to the indicator light SB1L of the next adjacent heating module 4;

[0047] The input end of the rotary switch SA is connected to the live wire. The rotary switch SA is divided into a manual adjustment mode and an automatic adjustment mode. The output end of the manual adjustment mode is connected to one end of the rotary switch SB1, the other end of the rotary switch SB1 is connected to one end of the rotary switch SB2, the other end of the rotary switch SB2 is connected to one end of the coil E, and the other end of the coil E is connected to the heating wire; the output end of the automatic adjustment mode is connected to the contact 9 of the thermostat WKQ, the contact 8 of the thermostat WKQ is connected to one end of the indicator light SB2L, and the other end of the indicator light SB2L is connected to the heating wire;

[0048] The contact 13 of the thermostat WKQ is connected to the live wire, the contact 14 is connected to the neutral wire N, and the contacts 1, 2 and 3 are connected to the platinum thermal resistor Pt100.

[0049] As a preferred embodiment, the AC contactor KM2 is arranged in parallel with the knob switch SB2, and the output end of the AC contactor KM2 is also connected to the indicator light SB2L.

[0050] As a preferred embodiment, a fuse FU is arranged in series on the front live wire of the first heating module 4 .

[0051] As a preferred embodiment, the heating wire is also connected to the neutral line N.

[0052] It should be noted that when the knob switch SA is in manual mode and de-icing is required, pressing the button switch SB1 will simultaneously close the AC contactor KM1, causing the coil E to be energized and the heating wire to start conducting and heating to melt the ice.

[0053] When the knob switch SA is in automatic mode and the temperature is ≤0℃ as detected by the platinum thermal resistor Pt100 and analyzed by the thermostat WKQ, the contacts 8 and 9 in the thermostat WKQ are closed, the coil E is energized, and the heating wire begins to conduct and heat. At the same time, the temperature is monitored by the platinum thermal resistor Pt100, so that the current in the heating wire is adjusted by the thermostat WKQ, that is, the heating efficiency of the heating wire is adjusted, thereby maintaining the melting rate between ice layers of different thicknesses and improving the energy utilization effect.

[0054] When the temperature controller WKQ analyzes that the temperature is between 0 and 5°C, contact 8 and contact 9 in the thermostat WKQ are disconnected, causing the coil E to lose power. At the same time, the AC contactor KM1 is disconnected, and the heating wire stops heating, further improving the purpose of energy saving.

[0055] When a circuit fails, the indicator lights HL, SB1L and SB2L provided for the corresponding circuit go out to remind maintenance personnel to perform maintenance, thereby improving the efficiency of fault location.

[0056] In specific implementation, the heating wires in the first temperature rise module, the second temperature rise module and the third temperature rise module are evenly fixed at the gate water seal height, and the heating wires in the fourth temperature rise module, the fifth temperature rise module and the sixth temperature rise module are fixed at the gate side rails. When de-icing is performed in manual mode, the power supply is turned on through the miniature circuit breaker, so that the current in the heating wire is independently adjusted according to the temperature through the RTD temperature control component, so as to achieve different heating powers at different temperatures, maintain the melting rate between ice layers of different thicknesses, and improve the energy utilization effect.

[0057] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A door slot heating electrical control system, characterized in that: include: Miniature circuit breaker (1), temperature control box, main ground wire PE; The power supply end of the miniature circuit breaker (1) is electrically connected to the power supply incoming line, and the load end is electrically connected to the temperature control box, and is used to control the on / off state of the main circuit of the load end; the main circuit is a three-wire four-way circuit, and the three-wire four-phase circuit is: a first live wire A1, a second live wire B2, a third live wire C1 and a neutral wire N; The temperature control box is also connected to the main ground line, and includes a first temperature rise module, a second temperature rise module, a third temperature rise module, a fourth temperature rise module, a fifth temperature rise module and a sixth temperature rise module; Among them, the connection terminals of the first temperature rise module and the third temperature rise module are connected to the live wire A1 and the neutral wire N, the connection terminals of the second temperature rise module and the fourth temperature rise module are connected to the live wire B1 and the neutral wire N, and the connection terminals of the third temperature rise module and the sixth temperature rise module are connected to C1 and the neutral wire N.

2. A door slot heating electrical control system according to claim 1, characterized in that: The first temperature rise module and the third temperature rise module have the same circuit connection, the second temperature rise module and the fourth temperature rise module have the same circuit connection, and the third temperature rise module and the fourth temperature rise module have the same circuit connection.

3. A door slot heating electrical control system according to claim 2, characterized in that: The first temperature rise module comprises: a power protector (2), a contactor (3), a heating module (4), and a ground wire (5); The power supply end of the surge protector (2) is connected to the live wire A1 and the neutral wire N, and the load end is connected to the power supply end of the contactor (3), and the contactor (3) is used to control the on / off of the circuit of the heating module (4); The heating module (4) comprises a heating wire and an RTD temperature control component, and the ground wire (5) is connected to the heating wire and the RTD temperature control component respectively.

4. A door slot heating electrical control system according to claim 3, characterized in that: The second temperature rise module has the same internal connection circuit as the first temperature rise module, except that the power supply end of the surge protector (2) is connected to the live wire B1 and the neutral wire N.

5. The door slot heating electrical control system according to claim 3, characterized in that: The third temperature rise module has the same internal connection circuit as the first temperature rise module, except that the power supply end of the surge protector (2) is connected to the live wire C1 and the neutral wire N.

6. A door slot heating electrical control system according to claim 3, characterized in that: The RTD temperature control assembly includes: an indicator light HL, a knob switch SA, an AC contactor KM1, an AC contactor KM2, a push button switch SB1L, a push button switch SB2L, an indicator light SB1, an indicator light SB2, a platinum thermal resistor Pt100, a thermostat WKQ, and a coil L; The indicator light HL is electrically connected to the live wire and the neutral wire N, one end of the AC contactor KM2 is connected to the live wire, and the other end is electrically connected to the indicator light SB1L, the other end of the indicator light SB1L is connected to one end of the heating wire, and the heating wire is connected to the indicator light SB1L of the next adjacent heating module (4); The input end of the rotary switch SA is connected to the live wire. The rotary switch SA is divided into a manual adjustment mode and an automatic adjustment mode. The output end of the manual adjustment mode is connected to one end of the rotary switch SB1, the other end of the rotary switch SB1 is connected to one end of the rotary switch SB2, the other end of the rotary switch SB2 is connected to one end of the coil E, and the other end of the coil E is connected to the heating wire; the output end of the automatic adjustment mode is connected to the contact 9 of the thermostat WKQ, the contact 8 of the thermostat WKQ is connected to one end of the indicator light SB2L, and the other end of the indicator light SB2L is connected to the heating wire; The contact 13 of the thermostat WKQ is connected to the live wire, the contact 14 is connected to the neutral wire N, and the contacts 1, 2 and 3 are connected to the platinum thermal resistor Pt100.

7. A door slot heating electrical control system according to claim 6, characterized in that: The AC contactor KM2 is arranged in parallel with the knob switch SB2, and the output end of the AC contactor KM2 is also connected to the indicator light SB2L.

8. The door slot heating electrical control system according to claim 6, characterized in that: A fuse FU is arranged in series on the front live wire of the first heating module (4).

9. The door slot heating electrical control system according to claim 6, characterized in that: The heating wire is also connected to the neutral line N.

10. The door slot heating electrical control system according to claim 3, characterized in that: The surge protector (2) consists of a leakage protector and a small circuit breaker.

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