Interlocking control circuit for forward and reverse rotation control and closing mechanism of turret fan

Abstract

The utility model provides a turret fan positive and negative rotation control and closing mechanism interlocking control circuit, comprising a valve control module comprising a relay K1 which is a double-pole double-throw relay, and a movable contact of the relay K1 is connected in parallel with a fly-wheel diode V2; the fan control module comprises a Y capacitor C1 and a Y capacitor C6 which are arranged at the power supply front end of the fan and are connected in series, and an X capacitor C2 and an X capacitor C3 which are connected in parallel; the reversal control module comprises a triode Q1, a collector electrode of the triode Q1 is connected with a reversal signal, the reversal signal is connected with a resistor R1 and a capacitor C5 which are connected in parallel, and the resistor R1 is also in power supply connection with the fan; when the draught fan is started, the power input end of the draught fan control module is at a high level, and the draught fan can rotate forwards or reversely by means of cut-off or conduction of the triode Q1. Forward and reverse rotation control of the turret fan and interlocking control of the closing mechanism are achieved through a hardware circuit, and the circuit is simple, reliable and low in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of turret fans, in particular to a turret fan forward and reverse rotation control and closing mechanism interlocking control circuit. Background Art

[0002] Artillery weapons are crucial fire support equipment. When firing, they generate large amounts of smoke and irritating gases within the turret compartment. If these harmful gases are not promptly exhausted, they can compromise the combat capabilities and even the personal safety of combatants. Furthermore, when the turret compartment is not firing, poor internal air circulation and a lack of fresh air supply can also negatively impact the physical and mental health of combatants.

[0003] To address the above issues, existing artillery weapon systems typically incorporate a turret fan to quickly expel smoke and dust from the turret. Furthermore, vents are also installed in the turret to allow for fresh air to flow in. However, existing ventilation systems still have the following design deficiencies:

[0004] First of all, the current domestic turret fans and their closing mechanisms are divided into intake and exhaust types. The fans adopt a one-way operation mode and cannot achieve the dual functional requirements of smoke exhaust and air intake and ventilation in the internal compartment of the turret.

[0005] Secondly, the above-mentioned closing mechanism adopts a manual opening method and cannot be opened automatically through a circuit. The operation is complicated and the degree of automation is low.

[0006] In addition, the existing closing mechanism cannot electrically realize the linkage control of the opening of the fan and the valve. This means that if the relevant personnel forget to open the closing mechanism, there is a risk that the fan will be blocked or even overloaded and burned.

[0007] It can be seen that the current turret fan and its closing mechanism have the defects of single function, complex operation and inability to achieve interlocking control. Utility Model Content

[0008] The technical problem to be solved by the utility model is how to realize the forward and reverse rotation control of the turret fan and the interlocking control of the closing mechanism.

[0009] In order to solve the above technical problems, the utility model provides a turret fan forward and reverse control and closing mechanism interlock control circuit, the circuit includes:

[0010] The valve control module includes a relay K1, wherein the relay K1 is a double-pole double-throw relay, and a freewheeling diode V2 is connected in parallel to the moving contact of the relay K1;

[0011] A fan control module includes a Y capacitor C1 and a Y capacitor C6 connected in series, and an X capacitor C2 and an X capacitor C3 connected in parallel, which are arranged at the front end of the fan power supply; and

[0012] The reversing control module includes a transistor Q1, the collector of which is connected to a reversing signal, which is connected to a resistor R1 and a capacitor C5 connected in parallel, and the resistor R1 is also connected to the fan power supply; when the fan is turned on, the power input end of the fan control module is at a high level, and the fan can be turned forward or reversed by turning off or on the transistor Q1.

[0013] Furthermore, the power input terminals of the valve control module, the fan control module and the reversing control module are respectively connected in series with diodes V1, V3 and V5 to form an anti-reverse connection protection circuit.

[0014] Furthermore, the base of the transistor Q1 is connected to the power input terminal of the reversing control module, and the base of the transistor Q1 is also connected to a resistor R3 and a capacitor C4 connected in parallel with each other, and the capacitor C4 is connected in parallel with the resistor R2.

[0015] Furthermore, the movable contact pin 3 of the relay K1 can be connected to the static contact pin 1 or pin 5 of the relay K1; the movable contact pin 6 of the relay K1 can be connected to the static contact pin 8 or pin 4 of the relay K1.

[0016] Furthermore, the fan control module further includes a freewheeling diode V6 and a freewheeling diode V7; wherein the freewheeling diode V6 is connected to the fan power supply; and the freewheeling diode V7 is connected to the relay K1.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The utility model realizes the forward and reverse rotation control of the turret fan through hardware circuits without the need for software and single-chip microcomputers, thereby meeting the dual functional requirements of smoke exhaust and air intake ventilation in the cabin inside the turret; at the same time, it also realizes the interlock control of the closing mechanism, so that the valve is opened only when ventilation is required and closed when ventilation is not required. The circuit is simple, reliable and low-cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a circuit diagram of the utility model.

[0020] In the figure: 1. Valve control module; 2. Fan control module; 3. Reversal control module. DETAILED DESCRIPTION

[0021] In order to make the technical solution and technical effect of the present invention clearer, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all of the embodiments.

[0022] The utility model aims to provide a turret fan forward and reverse control and closing mechanism interlock control circuit, which realizes the forward and reverse control of the turret fan, thereby achieving the dual functional requirements of smoke exhaust and air intake ventilation in the turret compartment; at the same time, the valve is opened only when ventilation is required and closed when ventilation is not required, thereby ensuring overpressure protection under nuclear, biological and chemical conditions.

[0023] refer to Figure 1 The circuit mainly includes a valve control module 1, a fan control module 2 and a reversing control module 3. Specifically:

[0024] Diodes V1, V3, and V5 are connected in series to the power input terminals of valve control module 1, fan control module 2, and reversing control module 3, respectively. The unidirectional conductivity of the diodes forms a reverse polarity protection circuit to prevent damage to the fan and circuits caused by incorrect power input connections.

[0025] Valve control module 1 includes relay K1, a double-pole, double-throw relay. Pin 3 of relay K1's moving contact can be connected to pins 1 or 5 of relay K1's static contact; pin 6 of relay K1 can be connected to pins 8 or 4 of relay K1's static contact. A freewheeling diode V2 is connected in parallel with relay K1's moving contact to provide freewheeling current during valve opening and switching, protecting the valve and relay K1.

[0026] The fan control module 2 includes Y capacitors C1 and C6 connected in series, and X capacitors C2 and C3 connected in parallel, located at the front end of the fan power supply. The fan control module 2 also includes freewheeling diodes V6 and V7. Freewheeling diode V6 is connected to the fan power supply, while freewheeling diode V7 is connected to relay K1. Freewheeling diodes V6 and V7 prevent damage to components and circuits caused by excessive reverse electromotive force during switching.

[0027] To explain further, the front end of the fan power supply is connected to Y capacitors C1 and Y capacitors C6, and to X capacitors C2 and X capacitors C3, which can effectively filter out the electromagnetic radiation and line conduction interference generated by the line input and fan operation, and ensure the electromagnetic compatibility characteristics of the product.

[0028] The reversing control module 3 includes a transistor Q1. The collector of transistor Q1 is connected to a reversing signal, which is connected to a resistor R1 and a capacitor C5 connected in parallel. Resistor R1 is also connected to the fan power supply. When the fan is on, the power input of fan control module 2 is at a high level. Turning transistor Q1 off or on causes the fan to rotate forward or reverse. The base of transistor Q1 is connected to the power input of reversing control module 3. The base of transistor Q1 is also connected to a resistor R3 and a capacitor C4 connected in parallel. Capacitor C4 is connected in parallel with resistor R2.

[0029] To explain further, resistors R1, R2, and R3, capacitors C4 and C5, and transistor Q1 form a common-emitter amplifier circuit. Resistors R2 and R3 establish the voltage and current at the base of transistor Q1, allowing transistor Q1 to operate in a saturated conduction state when the fan needs to reverse. Furthermore, resistors R3 and capacitor C4, as well as resistors R1 and capacitor C5, each form an RC filter circuit to filter out spatial signal interference and prevent malfunction of the fan.

[0030] When using:

[0031] When the fan is turned on and needs to rotate forward, the "fan control" is high and the "reverse control" is left floating or set low. At this time, transistor Q1 is in the off state, and the high level of the "fan power supply" is sent to the "reverse signal" through resistor R1. Therefore, the fan forward and reverse control signal port is high at this time, and the fan rotates forward.

[0032] When the fan is turned on and needs to be reversed, the "fan control" is high and the "reverse control" is also high. At this time, the transistor Q1 is in a saturated conduction state, and the "reverse signal" is pulled to a low level through the transistor Q1. Therefore, the fan forward and reverse control signal port is low at this time, and the fan reverses.

[0033] When the fan is turned on, "fan control" is at a high level, the relay K1 coil is energized, the valve control positive end relay 3 pin is connected to the relay 5 pin "valve line B", the negative end relay 6 pin is connected to the relay 4 pin "valve line A", the valve power supply is transferred from B to A, the valve rotates forward, and the fan is turned on and the valve is opened in linkage.

[0034] When the fan is turned off, "fan control" is at a low level, the relay K1 coil loses power, and the moving contact pin 3 of the relay K1 at the positive end of the valve control is connected to the static contact pin 1 of the relay K1 "valve line A"; the moving contact pin 6 of the relay K1 at the negative end is connected to the static contact pin 8 of the relay K1 "valve line B"; then the valve power supply switches from A to B, the valve reverses, and the fan is turned off and the valve is closed in linkage.

[0035] The utility model adopts a turret fan and its closing mechanism to realize air intake and exhaust control, taking into account the dual functional requirements of smoke exhaust and ventilation of the turret internal compartment, reducing turret layout and cost; the closing mechanism adopts an automatic interlocking mode, does not require manual operation by personnel, and has a high degree of automation; the valve is opened only when ventilation is required and closed when ventilation is not required, ensuring overpressure protection under nuclear, biological and chemical conditions; the closing mechanism can realize the linkage control of the fan opening and the valve, has a high safety factor, complete circuit protection, no software and single-chip microcomputer control, simple circuit, reliable, and low cost.

[0036] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A turret fan forward and reverse control and closing mechanism interlock control circuit, characterized in that: The circuit comprises: A valve control module (1) comprises a relay K1, wherein a freewheeling diode V2 is connected in parallel to a movable contact of the relay K1; A fan control module (2) includes a Y capacitor C1 and a Y capacitor C6 connected in series, and an X capacitor C2 and an X capacitor C3 connected in parallel, which are arranged at the front end of the fan power supply; and The reversing control module (3) comprises a transistor Q1, the collector of the transistor Q1 being connected to a reversing signal, the reversing signal being connected to a resistor R1 and a capacitor C5 connected in parallel, the resistor R1 being further connected to the fan power supply; when the fan is turned on, the power input end of the fan control module (2) is at a high level, and the fan can be caused to rotate forward or reverse by turning the transistor Q1 off or on.

2. The turret fan forward and reverse control and closing mechanism interlock control circuit according to claim 1 is characterized in that: The power input ends of the valve control module (1), the fan control module (2) and the reversing control module (3) are respectively connected in series with diodes V1, V3 and V5 to form an anti-reverse connection protection circuit.

3. The turret fan forward and reverse rotation control and closing mechanism interlock control circuit according to claim 1 is characterized in that: The base of the transistor Q1 is connected to the power input terminal of the reversing control module (3), and the base of the transistor Q1 is also connected to a resistor R3 and a capacitor C4 connected in parallel with each other, and the capacitor C4 is connected in parallel with the resistor R2.

4. The turret fan forward and reverse rotation control and closing mechanism interlock control circuit according to claim 1, characterized in that: The relay K1 is a double-pole double-throw relay.

5. The turret fan forward and reverse rotation control and closing mechanism interlock control circuit according to claim 1 or 4, characterized in that: The movable contact pin 3 of the relay K1 can be connected to the static contact pin 1 or pin 5 of the relay K1; the movable contact pin 6 of the relay K1 can be connected to the static contact pin 8 or pin 4 of the relay K1.

6. The turret fan forward and reverse rotation control and closing mechanism interlock control circuit according to claim 1, characterized in that: The fan control module (2) further comprises a freewheeling diode V6 and a freewheeling diode V7; wherein the freewheeling diode V6 is connected to the fan power supply; and the freewheeling diode V7 is connected to the relay K1.

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