CN217956517U - A low-voltage drawer switch cabinet - Google Patents

Abstract

The utility model provides a low-voltage drawer switch cabinet, wherein the low-voltage drawer switch cabinet includes: at least one drawer, a male plug copper clip and a secondary wire; the male plug copper clip and the secondary wire are located in the drawer, and the male plug The copper clips include A-phase male plug copper clips, B-phase male plug copper clips and C-phase male plug copper clips. The difference between the length of the male plug copper clips of any phase and the length of the other two-phase male plug copper clips is greater than or equal to the threshold Distance; the secondary wire is connected to the male copper clip of any phase with the longest length. The utility model solves the problem in the related art that when the drawer of the low-voltage drawer switchgear is in the "test position", the control circuit needs to connect the drawer to take power from the outside through a secondary plug-in, and there is a risk of disconnection.

Description

A low-voltage drawer switch cabinet

technical field

The utility model relates to the technical field of switch cabinets, in particular to a low-voltage drawer switch cabinet.

Background technique

When the drawer circuit of the low-voltage drawer switch cabinet is the motor outlet circuit, it is required that the primary circuit is not charged when the drawer is in the "test position", and the secondary circuit is charged. At this time, the control circuit can be debugged. Generally, the drawer is designed so that when the drawer is in the "test position", the primary incoming line contact is not charged, and the control circuit needs to take power from the incoming copper bar outside the drawer through the secondary plug-in. This power-taking method has the possibility of increased disconnection at the breakpoint of the secondary plug-in, and the excessive length of the secondary wire used for the incoming copper bar from the drawer to the busbar room will increase the production workload. Therefore, in the related art, when the drawer of the low-voltage drawer switchgear is in the "test position", the control circuit needs to connect to the outside of the drawer to obtain power through a secondary plug-in, and there is a problem of disconnection risk.

Utility model content

The utility model provides a low-voltage drawer switch cabinet to at least solve the problem in the related art that when the drawer of the low-voltage drawer switch cabinet is in the "test position", the control circuit needs to connect the outside of the drawer to take power through a secondary plug-in, and there is a risk of disconnection. question.

According to an aspect of the embodiment of the present invention, a low-voltage drawer switchgear is provided, the low-voltage drawer switchgear includes: at least one drawer, a male plug copper clip and a secondary wire; the male plug copper clip and two The secondary wire is located in the drawer, and the male copper clips include A-phase male copper clips, B-phase male copper clips, and C-phase male copper clips. The length of any phase male copper clip is the same as that of the other two The difference between the lengths of the male copper clips of the phases is greater than or equal to a threshold distance; the secondary wire is connected to the male copper clip of any phase with the longest length.

Optionally, the threshold distance is determined according to the stroke of the drawer.

Optionally, the low-voltage drawer switchgear also includes: a female socket base and a partition, and the drawer includes: a fixed insulator; the fixed insulator wraps the male plug copper clip and is located on the backboard of the drawer Above, the female socket base is located on the partition of the low-voltage drawer switch cabinet, and is used to connect with the male socket copper clip.

Optionally, the drawer further includes: a travel switch; and the secondary wire is also connected to the travel switch.

Optionally, the travel switch is used to control the drawer to be in the working position, test position or separation position; when the drawer is in the working position, the contact of the travel switch connected to the power supply of the working position is in a closed state, and is connected to the power supply of the test position The travel switch contact of the drawer is in an open state; when the drawer is in the test position, the travel switch contact connected to the test position power supply is in a closed state, and the travel switch contact connected to the working position power supply is in a disconnected state. state.

Optionally, the drawer also includes a circuit breaker, the circuit breaker is in the opening position when the drawer is in the test position, and is in the closing position when the drawer is in the working position; the power supply for the test position is the incoming line side of the circuit breaker, The working position power supply is the outlet side of the circuit breaker.

Optionally, the male copper clip, the secondary wire, the fixed insulator and the female socket form a primary contact; the primary contact includes a primary contact A phase, a primary contact B phase and primary contact C phase; the difference between the length of B-phase male copper clip and the length of A-phase and C-phase male-plug copper clip is equal to 20mm, and the secondary wire is connected to the male-plug copper clip of B-phase of the primary contact Chip.

Optionally, when the drawer is in the working position, the phase A of the primary contact, the phase B of the primary contact, and the phase C of the primary contact are in a connected state, and the secondary wire is charged; the drawer is in At the test position, the phase A of the primary contact and the phase C of the primary contact are in a separated state, the phase B of the primary contact is in a connected state, and the secondary wire is charged; when the drawer is in a separated position, the The phase A of the primary contact, the phase B of the primary contact and the phase C of the primary contact are in a separated state, and the secondary wire is not charged.

In the embodiment of the utility model, by setting the difference between the length of any phase of the male plug copper clip in the drawer and the length of the other two phases of the male plug copper clip to be greater than or equal to the threshold distance, the secondary wire is connected to the longest male plug copper clip. The clip connection realizes the purpose of taking power from the inside of the drawer through the secondary wire when debugging the control circuit, reduces the need to connect the outside of the drawer to take power through the secondary plug-in, and reduces the risk of disconnection.

In the embodiment of the utility model, when the drawer is at the test position, the secondary conductor takes power from the incoming side of the circuit breaker, and when the drawer is at the working position, the secondary conductor takes power from the outgoing side of the circuit breaker, which improves the safety during operation. safety.

Description of drawings

The accompanying drawings, which are incorporated in the specification and constitute a part of the specification, illustrate embodiments consistent with the present utility model, and are used together with the specification to explain the principle of the utility model.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art In other words, other drawings can also be obtained from these drawings without paying creative labor.

Figure 1 is a top view of an optional drawer according to an embodiment of the present invention;

Fig. 2 is a schematic diagram of an optional low-voltage drawer switchgear assembly according to an embodiment of the present invention;

Fig. 3 is a schematic diagram of the positional relationship of components under the cross-section of an optional low-voltage drawer switch cabinet according to an embodiment of the present invention;

Fig. 4 is a schematic diagram of connection between an optional travel switch and a secondary conductor according to an embodiment of the present invention;

Fig. 5 is a schematic diagram of a travel switch contact when the drawer is in the working position according to an embodiment of the utility model;

Fig. 6 is a schematic diagram of a travel switch contact when the drawer is in the test position according to an embodiment of the utility model;

Fig. 7 is a schematic diagram of connection between an optional circuit breaker in the drawer and secondary wires according to an embodiment of the present invention;

Fig. 8 is a schematic diagram of an optional primary contact according to an embodiment of the present invention;

Figure 9-1 is a schematic diagram of an optional drawer in the working position of the primary contact and the electrification of the secondary wire according to the embodiment of the utility model;

Fig. 9-2 is a schematic diagram of electrification of the primary contact B phase of the primary contact and the secondary wire in the test position of an optional drawer according to the embodiment of the utility model;

Fig. 9-3 is a schematic diagram of an optional drawer in a separated position according to an embodiment of the utility model, and the primary contact and the secondary wire are not charged.

Explanation of reference numbers:

Z-male copper clip; C-secondary wire; D-female base; E-fixed copper clip insulation; F-partition; G-drawer; S-travel switch; B-test position power supply; B1 -Work position power supply; 1-travel switch contact 1; 2-travel switch contact 2; 3-travel switch contact 3; 4-travel switch contact 4; H-circuit breaker; I-incoming line side of circuit breaker ; J-outlet side of the circuit breaker; BZ-B phase male plug copper clip.

detailed description

In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the utility model. Obviously, the described The embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, use a specific The azimuth structure and operation, therefore can not be construed as the limitation of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a flexible connection. Detachable connection, or integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, or it can be the internal communication of two components, it can be wireless connection, or it can be wired connection. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

According to one aspect of the embodiment of the present invention, a low-voltage drawer switchgear is provided. As shown in FIG. The copper clip Z and the secondary wire C are located in the drawer G. The male copper clip Z includes the A-phase male plug copper clip, the B-phase male plug copper clip, and the C-phase male plug copper clip. The male plug copper clip of any phase The difference between the length of the clip and the length of the male copper clip of the other two phases is greater than or equal to the threshold distance; the secondary conductor C is connected to the male copper clip of any phase with the longest length.

Specifically, in actual setting, the length of any phase of the male copper clip can be set to be the longest. For example, the length of the A-phase male copper clip is the longest, that is, the difference between the A-phase male copper clip and the B-phase male copper clip is greater than or equal to the threshold distance, and the difference between the A-phase male copper clip and the C-phase male copper clip is equal to or greater than the threshold distance. The value is greater than or equal to the threshold distance. At this time, one end of the secondary wire is connected to the A-phase male plug copper clip, and the power is taken from the A-phase. You can also set the length of the B-phase male copper clip to be the longest, that is, the difference between the B-phase male copper clip and the A-phase male copper clip is greater than or equal to the threshold distance, and the B-phase male copper clip and the C-phase male copper clip The difference is greater than or equal to the threshold distance. At this time, one end of the secondary wire is connected to the B-phase male plug copper clip, and electricity is taken from the B-phase. It is also possible to set the length of the phase C male copper clip to be the longest, that is, the difference between the C phase male copper clip and the A phase male copper clip is greater than or equal to the threshold distance, and the phase C male copper clip and the B phase male copper clip The difference is greater than or equal to the threshold distance. At this time, one end of the secondary wire is connected to the C-phase male plug copper clip, and electricity is taken from the C-phase. Therefore, through the connection between the secondary wire and the longest male copper clip, when the drawer is in a certain position, only the longest male copper clip can be connected to the power supply, so that the male copper clip The secondary conductor of the clip connection is live.

In the embodiment of the utility model, by making the difference between the length of the male copper clip of any phase and the length of the other two phases of the male copper clip greater than or equal to the threshold distance and connecting the secondary wire with the length of any phase with the longest length The male plug copper clip connection realizes the purpose of taking power from the inside of the drawer through the secondary wire when debugging the control circuit, reduces the need to connect the outside of the drawer to take power through the secondary plug-in, and reduces the risk of disconnection.

As an optional embodiment, the threshold distance is determined according to the stroke of the drawer. Optionally, according to the stroke of the drawer in this embodiment, the threshold distance can be 20 millimeters, and the variable range is +5 millimeters, that is, the length of the longest male copper clip is the same as the length of the other two male copper clips. The difference in length is 20 mm to 25 mm. The lengths of the other two phases of the male plug copper clips are generally equal. At this time, the secondary wire connected to the longest male plug copper clip can be connected to the inside of the drawer during debugging of the control loop. The purpose of taking power is to reduce the number of secondary wires used for taking power outside the drawer, so as to reduce the workload.

As an optional embodiment, the low-voltage drawer switchgear also includes: a female socket base and a partition, and the drawer includes: a fixed insulator; the fixed insulator wraps the male plug copper clip and is located on the back plate of the drawer, and the female socket base is located on the On the partition of the low-voltage drawer switch cabinet, it is used to connect with the copper clip of the male plug. Optionally, as shown in Figure 2 and Figure 3, the drawer G includes: a fixed insulator (that is, a fixed copper clip insulator E), which wraps the male copper clip Z and is used to fix the male copper clip Piece Z, through the back of the drawer. The female socket base D is located on the partition F of the low-voltage drawer switch cabinet, and the female socket base D is used to connect with the male copper clip Z. In the embodiment of the present utility model, the purpose of making the secondary wire uncharged or charged is achieved by disconnecting or connecting the male socket copper clip and the female socket base.

As an optional embodiment, the drawer further includes: a travel switch; the secondary wire is also connected to the travel switch. Optionally, as shown in Figure 4, the drawer also includes a travel switch S, and the secondary wire C is connected to the travel switch S in addition to being connected to the male plug copper clip of any phase with the longest length, that is, the secondary wire C One end of the cable is connected to the male plug copper clip of any phase with the longest length, and the other end is connected to the limit switch S. In the embodiment of the utility model, by connecting the secondary wire with the travel switch, the purpose of debugging the control circuit through the travel switch is realized.

As an optional embodiment, the travel switch is used to control the drawer to be in the working position, the test position or the separation position; The travel switch contact connected to B is in the disconnected state; when the drawer is in the test position, the travel switch contact connected to the test position power supply B is in the closed state, and the travel switch contact connected to the working position power supply B1 is in the disconnected state. Optionally, as shown in Figure 5, when the drawer is in the working position, the travel switch contact 1 and the travel switch contact 2 are in an open state, and the travel switch contact 3 and the travel switch contact 4 are in a closed state, at this time The control circuit takes power from the power supply B1 of the working position; when the drawer is in the test position, the travel switch contact 1 and the travel switch contact 2 are in the closed state, and the travel switch contact 3 and the travel switch contact 4 are in the disconnected state. The control circuit takes power from the power supply B of the test position. It should be noted that the power supply of the working position and the power supply of the test position are used to represent two different power-taking positions, which can be realized by a device that can control the on-off of the main circuit. In the embodiment of the utility model, by setting the drawer in different positions, the control circuit takes power from different places, which can improve the operation safety.

As an optional embodiment, the drawer also includes a circuit breaker. The circuit breaker is in the opening position when the drawer is in the test position, and is in the closing position when the drawer is in the working position; The power supply is the outlet side of the circuit breaker. Optionally, as shown in Figure 7, the drawer also includes a circuit breaker H. Since the drawer circuit of the low-voltage drawer switchgear is the motor outlet circuit, when the control circuit is debugged, it is required that the primary circuit is not charged when the drawer is in the "test position". Therefore, the circuit breaker H is in the opening position when the drawer is in the test position, and is used to disconnect the primary circuit. At this time, when the control circuit takes power in the drawer, it needs to take power at the incoming line side I of the circuit breaker through the secondary wire C connecting the travel switch S and the longest male plug copper clip of any phase. When the drawer is in the working position, the circuit breaker H is in the closing position, and the secondary conductor C is powered on the outlet side J of the circuit breaker. In the embodiment of the utility model, by setting the drawer in different states, the secondary circuit takes power from different positions of the circuit breaker, so that when the primary circuit is disconnected, the secondary circuit has power and the working position must be when the circuit breaker is closed. In the gate state, the secondary circuit has the effect of electricity, which improves the safety of operation.

As an optional embodiment, the male plug copper clip, the secondary wire, the fixed insulator and the female socket base form a primary contact; the primary contact includes a primary contact A phase, a primary contact B phase, and a primary contact C Phase; when the difference between the length of the male copper clip of phase B and the length of the male copper clips of phase A and phase C is greater than or equal to the threshold distance, the secondary wire is connected to the male copper clip of phase B of the primary contact. Optionally, the male plug copper clip, the secondary wire, the fixed insulator and the female socket base form a primary contact, as shown in Figure 8, the primary contact can realize that when the drawer is in the test position, the control circuit can be controlled from the inside of the drawer Get electricity. Specifically, the primary contact includes a phase A of the primary contact, a phase B of the primary contact, and a phase C of the primary contact, wherein the difference between the length of the male copper clip BZ of phase B and the length of the male copper clip of phase A and C It is equal to 20 mm, and the secondary wire is connected to the B-phase male copper clip BZ of the primary contact. In the embodiment of the utility model, by extending the length of the male plug copper clip of the phase B of the primary contact, the secondary wire can be powered from the drawer and the risk of disconnection can be reduced.

As an optional embodiment, when the drawer is in the working position, the phase A of the primary contact, the phase B of the primary contact, and the phase C of the primary contact are in a connected state, and the secondary wire is charged; when the drawer is in the test position, the primary contact A Phase and primary contact C phase are separated, primary contact B phase is connected, and the secondary wire is charged; when the drawer is in the separated position, primary contact A phase, primary contact B phase and primary contact C phase are separated state, the secondary wire is not charged. Optionally, as shown in Figure 9-1, when the drawer is in the working position, the male copper clips of the primary contact A phase, the primary contact B phase and the primary contact C phase are all connected to the female socket base , the primary contact and the secondary conductor C are charged; as shown in Figure 9-2, when the drawer is in the test position, the male copper clips of the primary contact A phase and the primary contact C phase are separated from the female socket base state, the male copper clip of phase B of the primary contact is connected to the female socket base, and the phase B of the primary contact and the secondary wire C connected to the male copper clip of phase B are charged; as shown in Figure 9-3 It shows that when the drawer is in the separation position, the male plug copper clips of the primary contact A phase, the primary contact B phase, and the primary contact C phase are all in a separated state from the female socket base. At this time, the primary contact and the secondary contact Wire C is not charged. In the embodiment of the utility model, by prolonging the length of the B-phase male plug copper clip, when the drawer is in different positions, the primary contact and the secondary wire are differently charged, and the secondary wire is connected from the drawer when the control circuit is debugged. The purpose of taking electricity.

The serial numbers of the above embodiments of the utility model are only for description, and do not represent the advantages and disadvantages of the embodiments. In the above-mentioned embodiments of the present invention, the descriptions of each embodiment have their own emphases, and for the parts not described in detail in a certain embodiment, reference may be made to the relevant descriptions of other embodiments. The above is only a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made, these improvements and Retouching should also be regarded as the scope of protection of the present utility model.

Claims (8)

1. A low-voltage drawer switchgear, characterized in that, the low-voltage drawer switchgear comprises: at least one drawer, a male plug copper clip and a secondary wire; The male plug copper clip and the secondary wire are located in the drawer, and the male plug copper clip includes a phase A male plug copper clip, a B phase male plug copper clip, and a C phase male plug copper clip. The difference between the length of the male copper clip and the length of the other two-phase male copper clips is greater than or equal to the threshold distance; The secondary wire is connected to the male plug copper clip of any phase with the longest length. 2. The low-voltage drawer switchgear according to claim 1, wherein the threshold distance is determined according to the stroke of the drawer. 3. The low-voltage drawer switchgear according to claim 1, characterized in that, the low-voltage drawer switchgear also includes: a female socket base and a partition, and the drawer includes: a fixed insulator; The fixed insulator wraps the male plug copper clip and is located on the back plate of the drawer, and the female socket base is located on the partition of the low-voltage drawer switch cabinet for connecting with the male plug copper clip. connect. 4. The low-voltage drawer switchgear according to claim 3, wherein the drawer further comprises: a travel switch; The secondary wire is also connected to the travel switch. 5. The low-voltage drawer switchgear according to claim 4, wherein the travel switch is used to control the drawer to be in the working position, test position or separation position; When the drawer is in the working position, the travel switch contact connected to the working position power supply is in a closed state, and the travel switch contact connected to the test position power supply is in an open state; When the drawer is at the test position, the travel switch contact connected to the test position power supply is in a closed state, and the travel switch contact connected to the working position power supply is in an open state. 6. The low-voltage drawer switchgear according to claim 5, wherein the drawer further includes a circuit breaker, the circuit breaker is in the opening position when the drawer is in the test position, and is in the closing position when the drawer is in the working position Location; The power supply of the test position is the incoming line side of the circuit breaker, and the power supply of the working position is the outgoing line side of the circuit breaker. 7. The low-voltage drawer switchgear according to claim 5, wherein the male plug copper clip, the secondary wire, the fixed insulator and the female socket base form a primary contact; The primary contact includes a primary contact A phase, a primary contact B phase, and a primary contact C phase; The difference between the length of the B-phase male plug copper clip and the A-phase and C-phase male plug copper clip lengths is equal to 20 mm, and the secondary wire is connected to the B-phase male plug copper clip of the primary contact. 8. The low-voltage drawer switchgear according to claim 7, characterized in that, When the drawer is in the working position, the phase A of the primary contact, the phase B of the primary contact, and the phase C of the primary contact are in a connected state, and the secondary wire is charged; When the drawer is in the test position, the phase A of the primary contact and the phase C of the primary contact are in a separated state, the phase B of the primary contact is in a connected state, and the secondary wire is charged; When the drawer is in the separated position, the phase A of the primary contact, the phase B of the primary contact and the phase C of the primary contact are in a separated state, and the secondary wire is not charged.

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