Installation device of current transformer

Abstract

The invention discloses an installation device of a current transformer, and belongs to the technical field of current transformer installation. An installation device of a current transformer comprises a transformer body, the transformer body comprises a base and a top cover which are hinged, the base is rotationally connected with a bolt rod, the bolt rod is in threaded connection with a U-shaped clamp, the U-shaped clamp is in sliding connection with the base, the U-shaped clamp is located on the opening side of the transformer body, one side of the top cover is fixedly connected with a protruding block, and when the base and the top cover are closed, the protruding block is in threaded connection with the bolt rod. The protruding block is located on the inner side of the U-shaped clamp. A mold is arranged below the base and matched with the base in an inserted mode, a supporting rod is fixedly connected to the lower portion of the mold, a sleeve is rotationally connected to the supporting rod, and a nut at the lower end of the bolt rod is matched with the sleeve in an inserted mode. When the device is used, only the bolt rod needs to be rotated, the U-shaped clamp is moved upwards by a certain distance, and then the installation operation of the current transformer can be completed only by controlling the sleeve to rotate.

Description

Technical Field

[0001] This invention relates to the field of current transformer installation technology, and more specifically, to an installation device for a current transformer. Background Technology

[0002] In modern power systems, current transformers are a key electrical device widely used in current measurement, energy metering, and relay protection. Their main function is to convert high voltage and large current in the primary circuit into lower voltage and smaller current in the secondary circuit, thereby providing safe and accurate signal input for measuring instruments and protection devices, ensuring the stable operation and precise monitoring of the power system.

[0003] A search revealed that Chinese patent CN105869851B discloses a current transformer device that can be quickly installed while energized. This device, through the setting of upper and lower mold cylinders, can effectively achieve the effect of pushing the lower mold upward to make the first housing and the second housing snap together, thus realizing the rapid installation of the current transformer while energized. Furthermore, through the setting of the first connecting rod, the second connecting rod, and the third connecting rod, the current transformer can be effectively installed at a higher position.

[0004] Since most common open-type current transformers are hinged designs, the above solution is only applicable to the installation of split-type current transformers. In order to solve the installation problem of open-type current transformers with hinged structures, we propose an installation device for current transformers. Summary of the Invention

[0005] 1. Technical problems to be solved The purpose of this invention is to provide an installation device for a current transformer to solve the problems mentioned in the background art.

[0006] 2. Technical Solution This invention is achieved through the following technical solution: An installation device for a current transformer includes a transformer body, the transformer body including a hinged base and a top cover, a bolt rod rotatably connected to the base, a U-shaped clamp threadedly connected to the bolt rod, the U-shaped clamp being slidably connected to the base, the U-shaped clamp being located on the open side of the transformer body, and a protrusion fixedly connected to one side of the top cover, the protrusion being located inside the U-shaped clamp when the base and the top cover are closed; A mold is provided below the base, and the base is inserted into the mold. A support rod is fixedly connected to the lower part of the mold, and a sleeve is rotatably connected to the support rod. The nut at the lower end of the bolt rod is inserted into the sleeve. A first driving structure is installed on the support rod, which is used to drive the sleeve to rotate. A clamping rod is horizontally inserted into the mold, which is used to limit the top cover. A second driving structure is installed on the support rod, which is used to push the clamping rod away from the top cover.

[0007] As an optional solution to the technical solution in this application, the first driving structure is a motor.

[0008] As an optional solution to the technical solution of this application, a first limiting protrusion and a second limiting protrusion are fixedly connected to the clamping rod. The first limiting protrusion is located between the base and the top cover, and the second limiting protrusion is located on the top cover. When the top cover is clamped by the first limiting protrusion and the second limiting protrusion, the base and the top cover remain open.

[0009] As an optional solution to the technical solution of this application, the second driving structure includes a lever, which is fixedly connected to the sleeve, and the clamping rod extends to one side of the lever. The lever is used to push the clamping rod away from the top cover.

[0010] As an optional solution to the technical solution of this application, a baffle is fixedly installed on the clamping rod, a locking block is provided on one side of the baffle, the middle of the locking block protrudes towards one side of the baffle, the baffle is slidably connected to the mold, and an elastic element is provided between the baffle and the mold.

[0011] As an optional solution to the technical solution of this application, the base is provided with a slot, the slot is opened in a direction parallel to the rotation axis of the top cover, and the bolt rod is rotatably inserted into the slot.

[0012] As an optional solution to the technical solution in this application, the support rod is made of insulating material.

[0013] As an optional solution to the technical solution in this application, the baffle is detachably connected to the clamping rod by bolts.

[0014] As an optional solution to the technical solution in this application, the support rod is provided with a switch for controlling the forward and reverse rotation of the motor.

[0015] 3. Beneficial effects Compared with the prior art, the beneficial effects of the present invention are: 1) By setting a clamp rod, this application can limit the top cover and keep the transformer body in an open state; after the base and top cover are fitted onto the cable, the top cover can be released by moving the clamp rod, which facilitates the U-shaped clamp to close the base and top cover, so that this device can be used for the installation of the transformer body.

[0016] 2) This application provides a lever on the outside of the sleeve, which drives the bolt rod to rotate. When the U-shaped clamp is moved downward, the lever can push the clamp rod to release the top cover. This allows the device to be used by simply rotating the bolt rod to move the U-shaped clamp upward a certain distance, avoiding interference between the U-shaped clamp and the closing of the top cover. The installation of the current transformer can be completed simply by controlling the rotation of the sleeve. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an installation device for a current transformer. Figure 2 This is a schematic diagram of the main structure of a current transformer, which is an installation device for a current transformer. Figure 3 This is a schematic diagram of the internal structure of an installation device for a current transformer. Figure 4 This is a schematic diagram of the clamping rod structure of a current transformer mounting device; Figure 5 This is a schematic diagram of a mold structure for an installation device of a current transformer; In the diagram: 1. Current transformer body; 101. Base; 102. Top cover; 103. Bolt rod; 104. U-shaped clamp; 105. Protrusion; 106. Slot; 2. Mold; 3. Support rod; 4. Sleeve; 5. First drive structure; 6. Clamping rod; 601. First limiting protrusion; 602. Second limiting protrusion; 603. Baffle; 604. Locking block; 605. Elastic element; 7. Second drive structure; 701. Lever. Detailed Implementation

[0018] The technical solution of the present invention will now be clearly and completely described in conjunction with the accompanying drawings.

[0019] Please see Figure 1 and Figure 2 The present invention provides an installation device for a current transformer, including a transformer body 1. The transformer body 1 includes a hinged base 101 and a top cover 102. A bolt rod 103 is rotatably connected to the base 101. A U-shaped clamp 104 is threadedly connected to the bolt rod 103. The U-shaped clamp 104 is slidably connected to the base 101 and is located on the open side of the transformer body 1. A protrusion 105 is fixedly connected to one side of the top cover 102. When the base 101 and the top cover 102 are closed, the protrusion 105 is located inside the U-shaped clamp 104. A mold 2 is provided below the base 101. The base 101 and the mold 2 are inserted into each other. A support rod 3 is fixedly connected to the lower part of the mold 2. A sleeve 4 is rotatably connected to the support rod 3. The nut at the lower end of the bolt rod 103 is inserted into the sleeve 4. A first drive structure 5 is installed on the support rod 3. The first drive structure 5 is used to drive the sleeve 4 to rotate. A clamping rod 6 is horizontally inserted into the mold 2. The clamping rod 6 is used to limit the top cover 102. A second drive structure 7 is installed on the support rod 3. The second drive structure 7 is used to push the clamping rod 6 away from the top cover 102.

[0020] In this scheme, the horizontal positioning of the base 101 is achieved by inserting the base 101 into the mold 2 and the bolt rod 103 into the sleeve 4; then the top cover 102 is rotated upward, and the vertical position of the top cover 102 is fixed by the clamping rod 6, so that the base 101 and the top cover 102 can remain open; the current transformer body 1 is lifted upward by the support rod 3, and the base 101 and the top cover 102 are sleeved on the outside of the cable through the opening between the base 101 and the top cover 102, so that the base 101 presses against the cable upward; The second drive structure 7 drives the clamping rod 6 away from the top cover 102, causing the top cover 102 to lose the fixation of the clamping rod 6 and rotate towards the base 101 under the action of gravity or its own elastic force. Then, the first drive structure 5 drives the sleeve 4 to rotate, causing the bolt rod 103 inside the sleeve 4 to rotate, pushing the U-shaped clamp 104 downward, so that the inner wall of the U-shaped clamp 104 can contact the protrusion 105 on the mold 2. By pushing the protrusion 105, the base 101 and the top cover 102 are closed, clamping the transformer body 1 on the outside of the cable. After installation, by pulling the support rod 3 vertically downward, the base 101 can be removed from the mold 2 and the bolt rod 103 can be removed from the sleeve 4.

[0021] As a preferred embodiment of this application, the first drive structure 5 is a motor, and the support rod 3 is equipped with a switch to control the forward and reverse rotation of the motor. Preferably, the support rod 3 is made of insulating material, so that the device can complete the live installation of the transformer body 1.

[0022] like Figure 3 and Figure 4As shown, a first limiting protrusion 601 and a second limiting protrusion 602 are fixedly connected to the clamping rod 6. The first limiting protrusion 601 is located between the base 101 and the top cover 102, and the second limiting protrusion 602 is located on the top cover 102. When the top cover 102 is clamped by the first limiting protrusion 601 and the second limiting protrusion 602, the base 101 and the top cover 102 remain open. When the clamping rod 6 approaches the top cover 102, the first limiting protrusion 601 and the second limiting protrusion 602 can be inserted into the upper and lower sides of the top cover 102, restricting the top cover 102 from rotating upward or downward, and keeping the base 101 and the top cover 102 in the open state. When the second drive structure 7 pushes the clamping rod 6 away from the top cover 102, the first limiting protrusion 601 and the second limiting protrusion 602 can disengage from the top cover 102, and the top cover 102 can rotate downward under the action of gravity or its own elasticity, which facilitates the closing of the base 101 and the top cover 102.

[0023] like Figure 5 As shown, a baffle 603 is fixedly installed on the clamping rod 6. A locking block 604 is provided on one side of the baffle 603. The middle part of the locking block 604 protrudes towards one side of the baffle 603. The baffle 603 is slidably connected to the mold 2. An elastic element 605 is provided between the baffle 603 and the mold 2. Preferably, the baffle 603 is detachably connected to the clamping rod 6 by bolts. By installing the baffle 603 onto the clamping rod 6 and pushing the clamping rod 6, the baffle 603 passes over the protrusion on one side of the locking block 604, which can limit the clamping rod 6 and prevent it from moving freely, causing the transformer body 1 to fall out of the mold 2 and create a safety hazard.

[0024] Preferably, the second drive structure 7 includes a lever 701, which is fixedly connected to the sleeve 4. A clamping rod 6 extends to one side of the lever 701, and the lever 701 is used to push the clamping rod 6 away from the top cover 102. After the base 101 and the top cover 102 are fitted onto the outside of the cable, when the sleeve 4 is rotated by the motor, the lever 701 can push the clamping rod 6 to one side, thus releasing the top cover 102.

[0025] Preferably, the base 101 has a slot 106, the slot 106 is opened in a direction parallel to the rotation axis of the top cover 102, and the bolt rod 103 is rotatably inserted into the slot 106.

Claims

1. An installation device for a current transformer, characterized in that: The device includes a transformer body (1), which includes a hinged base (101) and a top cover (102). A bolt rod (103) is rotatably connected to the base (101), and a U-shaped clamp (104) is threaded onto the bolt rod (103). The U-shaped clamp (104) is slidably connected to the base (101). The U-shaped clamp (104) is located on the open side of the transformer body (1). A protrusion (105) is fixedly connected to one side of the top cover (102). When the base (101) and the top cover (102) are closed, the protrusion (105) is located inside the U-shaped clamp (104). A mold (2) is provided below the base (101). The base (101) and the mold (2) are inserted into each other. A support rod (3) is fixedly connected to the lower part of the mold (2). A sleeve (4) is rotatably connected to the support rod (3). The nut at the lower end of the bolt rod (103) is inserted into the sleeve (4). A first drive structure (5) is installed on the support rod (3). The first drive structure (5) is used to drive the sleeve (4) to rotate. A clamping rod (6) is horizontally inserted into the mold (2). The clamping rod (6) is used to limit the top cover (102). A second drive structure (7) is installed on the support rod (3). The second drive structure (7) is used to push the clamping rod (6) away from the top cover (102).

2. The installation device for a current transformer according to claim 1, characterized in that: The first driving structure (5) is a motor.

3. The installation device for a current transformer according to claim 1, characterized in that: The clamping rod (6) is fixedly connected with a first limiting protrusion (601) and a second limiting protrusion (602). The first limiting protrusion (601) is located between the base (101) and the top cover (102), and the second limiting protrusion (602) is located on the top cover (102). When the top cover (102) is clamped by the first limiting protrusion (601) and the second limiting protrusion (602), the base (101) and the top cover (102) remain open.

4. The installation device for a current transformer according to claim 1, characterized in that: The second drive structure (7) includes a lever (701), which is connected and fixed to the sleeve (4). The clamp (6) extends to one side of the lever (701), and the lever (701) is used to push the clamp (6) away from the top cover (102).

5. The installation device for a current transformer according to claim 1, characterized in that: A baffle (603) is fixedly installed on the clamping rod (6). A locking block (604) is provided on one side of the baffle (603). The middle part of the locking block (604) protrudes towards the baffle (603). The baffle (603) is slidably connected to the mold (2). An elastic element (605) is provided between the baffle (603) and the mold (2).

6. The installation device for a current transformer according to claim 1, characterized in that: The base (101) has a slot (106) with the slot (106) being parallel to the rotation axis of the top cover (102), and the bolt rod (103) is rotatably inserted into the slot (106).

7. The installation device for a current transformer according to claim 1, characterized in that: The support rod (3) is made of insulating material.

8. The installation device for a current transformer according to claim 5, characterized in that: The baffle (603) is detachably connected to the clamp (6) by bolts.

9. The installation device for a current transformer according to claim 2, characterized in that: The support rod (3) is equipped with a switch for controlling the forward and reverse rotation of the motor.

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