A special quick connection device and connection method for low voltage parallel power supply

Abstract

The invention discloses a special quick connection device for low-voltage parallel power supply, comprising a clamp head, a connecting line and an operating handle. There are two clamp heads, which are detachably connected to the connecting heads fixedly arranged at both ends of the connecting line through the operating handles respectively; a clamping groove is arranged at one end of the clamp head, and a connecting head fixing groove for the connecting head to be embedded, and a fixing device for fixing the connecting head in the connecting head fixing groove is arranged at the other end of the clamp head; the operating handle is a circular tubular structure, the outer side of which is wrapped with an outer insulating layer, and one end of the clamp head is fixedly provided with a clamp head fixing groove for the other end of the clamp head to be screwed into; the invention realizes the quick connection of the clamp head with the low-voltage cable and the low-voltage busbar through the operating handle, and at the same time, through the detachable connection between the clamp head and the connecting line, it is convenient to replace the two to realize the connection of different equipment, and the provision of the outer insulating layer ensures the insulation of the operating handle, and realizes the safe operation of the operator.

Description

Technical field:

[0002] The invention relates to the field of power supply and transformation maintenance, and in particular to a special quick connection device and a connection method for a low-voltage parallel power supply. Background technology:

[0004] In the context of canceling planned power outages, the operation of replacing distribution transformers with load using mobile box transformers will be widely carried out. However, in the operation of replacing distribution transformers without power outages using existing equipment, the 0.4kV cable can only be connected to the low-voltage busbar by bolts. Due to the lack of 0.4kV cable quick connectors, the process of connecting 0.4kV low-voltage cables to the low-voltage distribution cabinet busbar is relatively cumbersome. The equipment is energized during the operation, and there are many risk points. In addition, during the operation, the connection and removal of the bolts and copper noses will inevitably cause two short-term power outages, which will seriously affect the customer's power experience. Summary of the invention:

[0006] The technical problem to be solved by the present invention is: in the operation of replacing the distribution transformer without power outage, the connection process of the 0.4kV low-voltage cable and the low-voltage busbar is complicated, and it causes two short power outages, which seriously affects the customer's electricity experience.

[0007] A technical solution of the present invention is: a special quick connection device for low-voltage parallel power supply, comprising a clamp, a connecting wire and an operating handle, wherein the clamp is two and is detachably connected to the connecting heads fixedly arranged at both ends of the connecting wire through the operating handle;

[0008] One end of the clamp is provided with a clamping groove, and the other end of the clamp is provided with a connector fixing groove for the connector to be inserted into, and a fixing device for fixing the connector in the connector fixing groove;

[0009] The operating handle is a circular tubular structure, the outer side of which is wrapped with an outer insulating layer, and one end of the operating handle is fixedly provided with a clamp fixing groove for the other end of the clamp to be screwed into.

[0010] Furthermore, an insulating cover is provided on the clamping head at the top of the clamping slot.

[0011] Furthermore, the fixing device includes a screw hole and a connector fastening bolt. The screw hole is arranged radially along the other end of the clamp and is connected to the connector fixing groove. The connector fastening bolt is screwed into the screw hole.

[0012] Furthermore, the outer insulating layer is fixed to the clamp fixing groove by means of clamp fixing groove fastening bolts.

[0013] Furthermore, the connector and the connector fixing groove are provided with threads that cooperate with each other for threaded connection.

[0014] Furthermore, the connecting wire and the connector are crimped, and the connecting wire is a flexible cable.

[0015] Another technical solution of the present invention is: a special quick connection method for low-voltage parallel power supply, the steps of which are: step 1, one end of the connecting wire passes through the connecting wire channel in the first operating handle and is detachably fixed on the first clamp;

[0016] Step 2: Rotate the first operating handle clockwise to screw the first operating handle onto the first clamping head;

[0017] Step 3: The other end of the connecting wire passes through the connecting wire channel in the second operating handle and is detachably fixed on the second clamping head;

[0018] Step 4: Rotate the second operating handle clockwise to screw the second operating handle onto the second clamping head;

[0019] Step 5: Hold the first operating handle to clamp the slot on the first clamp on the low-voltage busbar, rotate the first operating handle clockwise, and the clamp fixing slot moves toward the clamp slot, so that the low-voltage busbar is fixed and pressed between the clamp slot and the clamp fixing slot;

[0020] Step 6: Hold the second operating handle and clamp the slot on the second clamp head on the low-voltage cable. Rotate the second operating handle clockwise, and the clamp head fixing slot moves toward the slot, so that the low-voltage cable is fixed and pressed between the slot and the clamp head fixing slot.

[0021] Furthermore, the detachable fixing method of the connecting wire and the first clamp and the second clamp is: the connecting wire is respectively extended into the connecting head fixing grooves on the first clamp and the second clamp through the connecting heads crimped at the two ends, and the connecting head fastening bolts threaded on the first clamp and the first clamp are rotated to detachably fix the connecting head in the connecting head fixing groove.

[0022] Furthermore, after the slot on the first clamp is clamped on the low-voltage busbar, the first clamp is pulled backward with force to make the low-voltage busbar fit tightly with the slot.

[0023] Furthermore, after the clamping slot on the second clamping head is clamped on the low-voltage cable, the second clamping head is pulled backward with force to make the low-voltage cable fit tightly with the clamping slot.

[0024] The beneficial effects of the present invention are:

[0025] 1. The present invention realizes the quick connection between the clamp head and the low-voltage cable and the low-voltage busbar through the operating handle. At the same time, the clamp head and the connecting wire are detachably connected, which facilitates the replacement of the two to realize the connection of different devices. The setting of the outer insulating layer ensures the insulation of the operating handle and realizes the safe operation of the operator.

[0026] 2. The clamp head of the present invention is provided with an insulating cover to ensure the insulation between the devices and prevent accidents caused by the distance being too close due to the setting of the clamp head. At the same time, when the connector is embedded in the connector fixing groove on the clamp head, the connector is fixed in the connector fixing groove by screwing the connector fastening bolt to achieve a tight connection between the two and prevent poor contact from affecting the stability of power supply.

[0027] 3. The outer insulating layer of the present invention is fixed to the clamp head fixing groove by means of the clamp head fixing groove fastening bolts, so that the outer insulating layer and the operating handle can be detached. During use, the outer insulating layer can be replaced in time.

[0028] 4. The connector and the connector fixing groove of the present invention have a threaded connection added on the basis of the connection through the connector fastening bolts, thereby ensuring the stability of the connection between the two and preventing the connector from falling off due to unstable thread connection of the connector fastening bolts.

[0029] 5. The crimping of the connecting wire and the connector of the present invention realizes a quick connection between the two, ensuring the connection strength and stability. The flexible cable is easy to bend and change the operation direction to adapt to the connection at different positions. Description of the drawings:

[0031] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only two of the drawings of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0032] Figure 1 This is a schematic diagram of the clamp structure used in conjunction with the low-voltage busbar;

[0033] Figure 2 This is a schematic diagram of the clamp structure used with low-voltage cables;

[0034] Figure 3 The structural intention of the operating handle;

[0035] Figure 4 It is a schematic diagram of the structure of the connector and the connecting wire.

[0036] In the figure, 1-insulating cover, 2-card slot, 3-connector fixing slot, 4-connector fastening bolt, 5-card slot fixing slot, 6-card slot fixing bolt, 7-outer insulating layer, 8-operating handle, 9-connector, 10-connecting wire, 11-connecting wire channel, 12-card. Specific implementation method:

[0038] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0039] In the present invention, the term "plurality" refers to two or more than two, unless otherwise clearly defined. The terms "set", "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0040] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0041] Embodiment 1:

[0042] like Figure 1-Figure 4 As shown, a special quick connection device for low-voltage parallel power supply includes a clamp head 12, a connecting wire 10 and an operating handle 8. There are two clamp heads 12, which are detachably connected to connecting heads 9 fixedly arranged at both ends of the connecting wire 10 through the operating handle 8, wherein the connecting wire 10 and the connecting head 9 are crimped, and the connecting wire 10 is a flexible cable. The crimping realizes the quick connection between the two, ensures the connection strength and stability, and the flexible cable is easy to bend to change the operation direction to adapt to the connection at different positions.

[0043] A card slot 2 is provided at one end of the clamping head 12, and the card slot 2 is set to the same shape as the low-voltage busbar and the low-voltage wire, so as to facilitate the clamping of the clamping head 12. A connector 9 fixing slot 3 is provided at the other end of the clamping head 12 for the connector 9 to extend into and be screwed therewith, and a fixing device for fixing the connector 9 in the connector 9 fixing slot 3, wherein the fixing device includes a screw hole and a connector 9 fastening bolt 4, the screw hole is arranged along the radial direction of the other end of the clamping head 12, and is connected with the connector 9 fixing slot 3, the connector 9 fastening bolt 4 is screwed in the screw hole, and at the same time, when the connector 9 is embedded in the connector 9 fixing slot 3 on the clamping head 12, the connector 9 is fixed in the connector 9 fixing slot 3 by screwing the connector 9 fastening bolt 4, so as to realize the fastening connection between the two and prevent the poor contact from affecting the stability of power supply.

[0044] The operating handle 8 is a circular tubular structure, with an outer insulating layer 7 wrapped around its outer side. One end of the operating handle 8 is fixedly provided with a clamp head 12 fixing groove 5 for the other end of the clamp head 12 to extend into and be screwed therewith. The clamp head 12 fixing groove 5 and the operating handle 8 are an integral structure. The outer insulating layer 7 realizes the insulation of the operating handle 8, making it convenient for people to perform connection operations through the operating handle 8, thereby ensuring people's operation safety.

[0045] Installation process: First, the operator crimps the connector 9 on the two ends of the connecting wire 10. The connector 9 and the connecting wire 10 pass through the connecting wire channels 11 in the two operating handles 8 and extend into the connector fixing grooves 3 on the two clamps 12. The connector 9 is removably fixed in the connector fixing groove 3 by rotating the connector fastening bolts 4 to complete the connection between the connector 9 at both ends of the connecting wire 10 and the other clamp 12, and then the two clamps 12 are screwed into the clamp fixing grooves 5 in the two operating handles 8 respectively.

[0046] The operator holds the first operating handle 8 to clamp the slot 2 on the first clamp 12 on the low-voltage busbar, and slightly pulls the clamp 12 backward to make the low-voltage busbar fit tightly with the slot 2. Then, the operator rotates the first operating handle 8 clockwise, and the clamp fixing slot 5 moves toward the slot 2, so that the low-voltage busbar is fixed and pressed between the slot 2 and the clamp fixing slot 5.

[0047] The operator holds the second operating handle 8 to clamp the slot 2 on the second clamp 12 on the low-voltage cable, and slightly pulls the second clamp 12 backward to make the low-voltage cable fit tightly with the slot 2. Then, the operator rotates the second operating handle 8 clockwise, and the clamp fixing slot 5 moves toward the slot 2, so that the low-voltage cable is fixed and pressed between the slot 2 and the clamp fixing slot 5.

[0048] The removal process is the opposite of the installation process and will not be described in detail here.

[0049] Embodiment 2:

[0050] like Figure 1-Figure 4 As shown, this embodiment is obtained by adding technical features such as an insulating cover 1 on the basis of the embodiment one. The remaining technical features are the same as those of the embodiment one, and the similarities are not repeated here. Among them, the detailed description of the added technical features is: an insulating cover 1 is provided on the clamping head 12 at the top of the slot 2, which is connected by bonding to ensure the insulation between the devices and prevent accidents caused by too close distance due to the setting of the clamping head 12.

[0051] Embodiment three:

[0052] like Figure 1-Figure 4As shown, this embodiment is obtained by adding technical features such as a clamp fixing groove fastening bolt 6 on the basis of the second embodiment. The remaining technical features are the same as those of the second embodiment, and the similarities are not repeated here. Among them, the detailed description of the added technical features is: the outer insulating layer 7 is fixed to the clamp fixing groove 5 by the clamp fixing groove fastening bolt 6, so that the outer insulating layer and the operating handle 8 can be detachably operated. During use, the outer insulating layer 7 can be replaced in time.

[0053] Embodiment 4:

[0054] like Figure 1-Figure 4 As shown, this embodiment is obtained by adding a connection method of technical features such as a connector 9 and a connector fixing groove 3 on the basis of the third embodiment. The remaining technical features are the same as those of the third embodiment, and the similarities are not repeated here. The detailed description of the added technical features is as follows: the connector 9 and the connector fixing groove 3 are provided with threads that cooperate with each other for screw connection, and a threaded connection is added to the connector and the connector fixing groove 3 on the basis of the connection through the connector fastening bolt 4, so as to ensure the stability of the connection between the two and prevent the connector 9 from falling off due to the unstable screw connection of the connector fastening bolt 4.

[0055] The above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A special quick connection method for low voltage parallel power supply, the steps are: The operation is performed using a special quick connection device for low-voltage parallel power supply, which includes a clamp, a connecting wire and an operating handle. There are two clamps, which are detachably connected to connectors fixed at both ends of the connecting wire through the operating handle respectively; a clamping slot is provided at one end of the clamp, and a connector fixing slot for the connector to be embedded in the other end of the clamp, and a fixing device for fixing the connector in the connector fixing slot; the operating handle is a tubular structure, the outer side of which is wrapped with an outer insulating layer, and one end of which is fixedly provided with a clamp fixing slot for the other end of the clamp to be screwed into; an insulating cover is provided on the clamp at the top of the clamp; the fixing device includes a screw hole and a connector fastening bolt, the screw hole is arranged along the radial direction of the other end of the clamp and is connected with the connector fixing slot, and the connector fastening bolt is screwed in the screw hole; the outer insulating layer is fixed to the clamp fixing slot by the clamp fixing slot fastening bolt; the connector and the connector fixing slot are provided with threads that cooperate with each other for screw connection; the connecting wire and the connector are crimped, and the connecting wire is a flexible cable; Step 1: One end of the connecting wire passes through the connecting wire channel in the first operating handle and is detachably fixed on the first clamping head; Step 2: Rotate the first operating handle clockwise to screw the first operating handle onto the first clamping head; Step 3: The other end of the connecting wire passes through the connecting wire channel in the second operating handle and is detachably fixed on the second clamping head; Step 4: Rotate the second operating handle clockwise to screw the second operating handle onto the second clamping head; Step 5: Hold the first operating handle to clamp the slot on the first clamp on the low-voltage busbar, rotate the first operating handle clockwise, and the clamp fixing slot moves toward the clamp slot, so that the low-voltage busbar is fixed and pressed between the clamp slot and the clamp fixing slot; Step 6: Hold the second operating handle and clamp the slot on the second clamp head on the low-voltage cable. Rotate the second operating handle clockwise, and the clamp head fixing slot moves toward the slot, so that the low-voltage cable is fixed and pressed between the slot and the clamp head fixing slot.

2. The method for quickly connecting a low-voltage parallel power supply according to claim 1 is characterized in that: The detachable fixing method of the connecting wire and the first clamp and the second clamp is: the connecting wire is respectively extended into the connecting head fixing grooves on the first clamp and the second clamp through the connecting heads crimped at the two ends, and the connecting head fastening bolts threaded on the first clamp and the first clamp are rotated to detachably fix the connecting head in the connecting head fixing groove.

3. The method for quickly connecting a low-voltage parallel power supply according to claim 1 is characterized in that: After the clamping slot on the first clamping head is clamped on the low-voltage busbar, the first clamping head is pulled backward with force to make the low-voltage busbar fit tightly with the clamping slot.

4. The method for quickly connecting a low-voltage parallel power supply according to claim 1 is characterized in that: After the clamping slot on the second clamping head is clamped on the low-voltage cable, the second clamping head is pulled backward with force to make the low-voltage cable fit tightly with the clamping slot.

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