Power supply protection circuit of spinning frame
By introducing a varistor and a filter into the power protection circuit of a ring spinning frame, the voltage shock problem when the relay contacts are disconnected is solved, the power supply is protected, and equipment damage is avoided.
Patent Information
- Application Number
- CN202422781199.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-14
- Publication Date
- 2025-10-14
- Estimated Expiration
- 2034-11-14
AI Technical Summary
现有环锭细纱机的抱闸控制系统中，继电器触点断开时产生的突变电压和反电动势导致电源及设备损坏。
A varistor and a filter are introduced into the power protection circuit. The varistor consumes the holding current of the brake coil, and the filter suppresses sudden voltage changes to avoid voltage shocks.
It effectively avoids damage to the power supply and other equipment due to sudden voltage changes and back electromotive force, and protects the stability of the power supply system.
Smart Images
Figure CN223436916U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to ring spinning frame circuit, concretely relates to a ring spinning frame power protection circuit. BACKGROUND
[0002] At present, the domestic ring spinning frame adopts relay control in the clutch control of motor, and the clutch control system of traditional ring spinning frame mainly consists of two parts, one part is the power supply of clutch power supply, and the other part is the relay of clutch action control, the clutch coil in the clutch system is inductive load, and the current of clutch coil is large, when the relay contact is disconnected, the clutch coil will produce a large transient voltage in the moment of power loss, which will cause the air medium between the relay contact gap to be broken down to produce arc, the arc will make the circuit be connected again, and the back electromotive force of clutch coil will produce voltage impact on the power supply circuit, thereby causing the damage of power supply and other equipment. UTILITY MODEL CONTENTS
[0003] The utility model discloses a kind of ring spinning frame power protection circuits, when circuit is disconnected, the maintaining current generated by clutch coil can be consumed, avoid causing damage to power supply.
[0004] The technical scheme of the utility model is as follows: a ring spinning frame power protection circuit, including power supply and clutch coil, the clutch coil is connected with power supply, the side of clutch coil is connected with clutch piece, the clutch piece brakes the motor of ring spinning frame, the power supply is connected with the clutch coil between relay contact, the relay contact includes first contact and second contact, the positive pole between power supply and the positive pole of clutch coil is equipped with first contact, the negative pole between clutch coil and the negative pole of power supply is equipped with second contact;The load side of relay contact is connected with piezoresistance in parallel, and filter is installed between the power supply side of relay contact and power supply;Controller is connected on the power protection circuit, and controller is located at the power supply side of filter, and relay coil is equipped between controller and the power protection circuit.
[0005] Further, the first contact and the second contact are both normally open contacts.
[0006] Further, the controller is a PNP-type controller.
[0007] Further, the relay coil is connected with the controller through the positive pole terminal provided thereon, and the relay coil is connected with the negative pole of the power supply of the power protection circuit through the negative pole terminal provided thereon.
[0008] Further, the voltage of the power supply is 5-96V, and the series of piezoresistance is D20.
[0009] Preferably, the controller is an NPN-type controller.
[0010] Preferably, the relay coil is connected with the positive pole of the power supply protection circuit through the positive pole connecting post arranged thereon, and the relay coil is connected with the controller through the negative pole connecting post arranged thereon.
[0011] The utility model discloses the beneficial effect is: when needing through the clutch piece to the ring spinning frame motor is embraced the brake, through the controller sends the opening signal to the relay coil, opens the first contact and the second contact through the relay coil control, makes the power supply protection circuit disconnect, and further makes the clutch coil power failure, and the clutch coil power failure instantaneous will produce mutation voltage, through the pressure sensitive resistance will part of the maintaining current that the clutch coil produces consume, through the filter will the mutation voltage that the clutch coil produces inhibit, avoid the counter electromotive force of clutch coil to cause voltage impact to the power supply protection circuit, and further avoid the overvoltage that the clutch coil produces causes damage to the power supply or other equipment. BRIEF DESCRIPTION OF DRAWINGS
[0012] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the following will be briefly introduced the drawing needed to be used in the embodiment or prior art description, obviously, the drawing in the following description only some embodiments of the utility model, for those skilled in the art, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings.
[0013] Figure 1 It is the schematic diagram of the embodiment one in the utility model;
[0014] Figure 2 It is the schematic diagram of the embodiment two in the utility model. DETAILED DESCRIPTION
[0015] The technical scheme in the embodiment of the utility model will be clearly and completely described in the following with the drawings in the embodiment of the utility model, obviously, the described embodiment only some embodiments of the utility model, not all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by those skilled in the art without making creative labor are within the protection scope of the utility model.
[0016] In the description of the present invention, it should be noted that the terms "upper", "lower", "one side", "between", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention; the terms "first" and "second" are only used for descriptive purposes and should not be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "set", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or it can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0017] Since the brake coil in the brake system of the spinning frame motor is an inductive load and the current of the brake coil is relatively large, when the relay contacts are disconnected, the brake coil will generate a large sudden voltage at the moment of power failure, causing the air medium in the relay contact gap to be broken down and generate an arc. The arc causes the circuit to be connected again. At the same time, the back electromotive force of the brake coil will generate a voltage shock to the power supply circuit, thereby causing damage to the power supply and other equipment. In view of this, the inventor of this application provides a spinning frame power supply protection circuit, which can consume the maintenance current generated by the brake coil when the circuit is disconnected, so as to avoid damage to the power supply.
[0018] Example 1
[0019] like Figure 1 As shown, a spinning frame power supply protection circuit includes a power supply 1 and a brake coil 2, the brake coil 2 is connected to the power supply 1, and a brake plate 3 is connected to one side of the brake coil 2, and the brake plate 3 brakes the motor of the spinning frame. A relay contact 4 is connected between the power supply 1 and the brake coil 2, and the relay contact 4 includes a first contact 41 and a second contact 42. The first contact 41 is provided between the positive pole of the power supply 1 and the positive pole of the brake coil 2, and the second contact 42 is provided between the negative pole of the brake coil 2 and the negative pole of the power supply 1; a varistor 5 is connected in parallel on the load side of the relay contact 4, and a filter 6 is installed between the power supply side of the relay contact 4 and the power supply 1; a controller 7 is connected to the power supply protection circuit, and the controller 7 is provided on the power supply side of the filter 6, and a relay coil 8 is provided between the controller 7 and the power supply protection circuit.
[0020] The first contact 41 and the second contact 42 are both normally open contacts.
[0021] Based on the above embodiment, generally, since the first contact 41 and the second contact 42 of the relay coil 8 are both in the open state, the power protection circuit is disconnected, the power supply 1 cannot supply power to the clutch coil 2, the clutch piece 3 moves to abut against the spinning machine motor, and then the clutch piece 3 brakes the spinning machine motor; when the spinning machine motor is running, it is necessary to cancel the braking of the clutch piece 3 to the spinning machine motor, and a closing signal is sent to the relay coil 8 through the controller 7, the relay coil 8 controls the first contact 41 and the second contact 42 to close, so that the power protection circuit is connected, the power supply 1 supplies power to the clutch coil 2, the clutch coil 2 is powered to separate the clutch piece 3 from the spinning machine motor, and then the clutch piece 3 releases the braking to the spinning machine motor; when it is necessary to brake the spinning machine motor again, an opening signal is sent to the relay coil 8 through the controller 7, the relay coil 8 controls the first contact 41 and the second contact 42 to open, so that the power protection circuit is disconnected, the power supply 1 cannot supply power to the clutch coil 2, the clutch coil 2 loses power to reset the clutch piece 3 to brake the spinning machine motor; in this process, the clutch coil 2 will generate a large transient voltage at the moment of power loss, a part of the holding current generated by the clutch coil 2 is consumed through the pressure-sensitive resistor 5, and the other part of the transient voltage is suppressed through the filter 6, so as to avoid damage to the power supply 1 or other equipment; in this embodiment, the filter 6 can be removed, and only the pressure-sensitive resistor 5 is used to consume the holding current generated by the clutch coil 2.
[0022] In this embodiment, the controller 7 is a PNP type controller 7.
[0023] Specifically, the relay coil 8 is connected with the controller 7 through the positive terminal post arranged thereon, and the relay coil 8 is connected with the negative pole of the power supply 1 of the power protection circuit through the negative terminal post arranged thereon.
[0024] The voltage of the power supply 1 is 5-96V, and the series of the pressure-sensitive resistor 5 is D20.
[0025] Based on the above embodiment, the relay coil 8 is supplied with power through the PNP type controller 7, when the controller 7 supplies power to the relay coil 8, the relay coil 8 generates magnetism to adsorb and close the first contact 41 and the second contact 42; when the power protection circuit is connected, the voltage between the positive pole and the negative pole of the pressure-sensitive resistor 5 is stable, so the resistance of the pressure-sensitive resistor 5 is very high at this time, which ensures that the current cannot pass through the pressure-sensitive resistor 5; when the clutch coil 2 generates a transient voltage, the voltage between the positive pole and the negative pole of the pressure-sensitive resistor 5 is unstable, so the resistance of the pressure-sensitive resistor 5 is low at this time, which ensures that the holding current generated by the clutch coil 2 can pass through the pressure-sensitive resistor 5 to be consumed.
[0026] Embodiment two
[0027] As Figure 2As shown, the embodiment differs from embodiment one in that the controller 7 is an NPN type controller 7.
[0028] The relay coil 8 is connected with the positive pole of the power supply 1 of the power supply protection circuit through the positive pole terminal provided thereon, and is connected with the controller 7 through the negative pole terminal provided thereon.
[0029] The working principle of the utility model is as follows: when the brake piece 3 is cancelled to brake the spinning frame motor, the controller 7 sends a closing signal to the relay coil 8, the relay coil 8 controls the first contact 41 and the second contact 42 to close, so that the power supply protection circuit is connected, the power supply 1 supplies power to the brake coil 2, the brake coil 2 is electrified to separate the brake piece 3 from the spinning frame motor, and then the brake piece 3 releases the brake on the spinning frame motor;
[0030] When the brake piece 3 is needed to brake the spinning frame motor, the controller 7 sends an opening signal to the relay coil 8, the relay coil 8 controls the first contact 41 and the second contact 42 to open, so that the power supply protection circuit is disconnected, the power supply 1 cannot supply power to the brake coil 2, the brake coil 2 is de-energized to reset the brake piece 3 to brake the spinning frame motor; and the brake coil 2 will produce a voltage mutation in the moment of de-energization, a part of the generated maintaining current is consumed through the pressure-sensitive resistor 5, and another part of the generated mutation voltage is inhibited through the filter 6, so that damage to the power supply 1 or other equipment is avoided.
[0031] Finally, it should be noted that: the above only for the preferred embodiments of the utility model, and does not limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for the person skilled in the art, still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features, any modification, equivalent replacement, improvement etc. that is made within the spirit and principles of the utility model, should be contained in the protection scope of the utility model.
Claims
1. A spinning frame power protection circuit, comprising a power supply and a brake coil, wherein the brake coil is connected to the power supply, and a brake piece is connected to one side of the brake coil, and the brake piece brakes the motor of the spinning frame, characterized in that: A relay contact is connected between the power supply and the brake coil, and the relay contact includes a first contact and a second contact. The first contact is provided between the positive pole of the power supply and the positive pole of the brake coil, and the second contact is provided between the negative pole of the brake coil and the negative pole of the power supply; a varistor is connected in parallel on the load side of the relay contact, and a filter is installed between the power supply side of the relay contact and the power supply; a controller is connected to the power supply protection circuit, and the controller is provided on the power supply side of the filter, and a relay coil is provided between the controller and the power supply protection circuit.
2. A spinning frame power supply protection circuit according to claim 1, characterized in that: The first contact and the second contact are both normally open contacts.
3. A spinning frame power supply protection circuit according to claim 2, characterized in that: The controller is a PNP type controller.
4. A spinning frame power supply protection circuit according to claim 3, characterized in that: The relay coil is connected to the controller via a positive terminal arranged thereon, and the relay coil is connected to the negative pole of the power supply of the power protection circuit via a negative terminal arranged thereon.
5. A spinning frame power supply protection circuit according to claim 4, characterized in that: The voltage of the power supply is 5-96V, and the series of the varistor is D20.
6. A spinning frame power supply protection circuit according to claim 2, characterized in that: The controller is an NPN type controller.
7. A spinning frame power supply protection circuit according to claim 6, characterized in that: The relay coil is connected to the positive pole of the power supply of the power protection circuit via the positive pole terminal provided thereon, and the relay coil is connected to the controller via the negative pole terminal provided thereon.