Rail car limit switch and dry-type transformer rail car device

Abstract

An embodiment of the utility model discloses a rail car limit switch and a dry type transformer rail car device, the limit switch comprises a limit switch static contact and a limit switch moving contact, the limit switch moving contact comprises an insulator tube and a petal contact, the limit switch static contact comprises a static contact, an insulating sleeve, an insulating seal head and a pressure spring, and the insulating sleeve is connected with the insulating seal head. The petal contact is arranged on the insulator tube, the petal contact is composed of two half parts which are oppositely arranged, the static contact is arranged at the front end of the insulating sleeve, and the tail end of the insulating sleeve is connected with the insulating seal head through the pressure spring. The device can be arranged on a dry-type transformer rail car and a rail on a data center power supply, the movement stroke of the rail car is limited, a contact is prevented from being damaged during plugging and unplugging, and the safety of personnel and equipment is ensured when a power supply end is put into power transmission or the power supply end is separated during overhaul.

Description

Technical Field

[0001] The utility model relates to the technical field of data center power supply, in particular to a railcar limit switch and a dry-type transformer railcar device. Background Art

[0002] With the widespread adoption of information technology and artificial intelligence, data center power supplies are increasingly demanding in terms of reliability and safety. Consequently, dry-type transformers for data center power supplies need to be mounted on small railcars to facilitate rapid repair or replacement, ensuring rapid restoration of power. Existing railcars are prone to contact damage during plugging and unplugging, necessitating travel limits. Utility Model Content

[0003] The technical problem to be solved by the embodiments of the present utility model is to provide a railcar limit switch and a dry-type transformer railcar device to limit the movement stroke of the railcar.

[0004] In order to solve the above technical problems, an embodiment of the present utility model proposes a rail vehicle limit switch, including a limit switch static contact and a limit switch moving contact. The limit switch moving contact includes an insulator tube and a petal contact. The limit switch static contact includes a static contact, an insulating sleeve, an insulating head, and a pressure spring. The petal contact is arranged on the insulator tube, and the petal contact consists of two oppositely arranged halves. The static contact is arranged at the front end of the insulating sleeve, and the end of the insulating sleeve is connected to the insulating head through a pressure spring.

[0005] Furthermore, the limit switch movable contact further comprises a fixed bracket, the insulator tube is arranged on the fixed bracket, the limit switch static contact further comprises a base for being installed on the track, and the insulating head is connected to the base.

[0006] Furthermore, threads are provided on the outer circumference of the insulator tube, and threaded holes are correspondingly provided on the fixing bracket, and the insulator tube passes through the threaded holes and is threadedly connected to the fixing bracket.

[0007] Furthermore, an adjustment wrench for adjusting the position of the petal contacts is provided on the insulator tube.

[0008] Furthermore, the limit switch movable contact also includes a power-assisting extension rod that is pluggable and connected to the adjusting wrench.

[0009] Furthermore, a control signal cable is provided in the insulator tube and is respectively connected to the two halves of the petal contact.

[0010] Furthermore, the static contact adopts a copper circular surface static contact.

[0011] Correspondingly, an embodiment of the present invention also provides a dry-type transformer railcar device, including a dry-type transformer railcar, a track and the above-mentioned railcar limit switch, the dry-type transformer railcar is provided with a dry-type transformer body, and the bottom of the dry-type transformer railcar is provided with rail wheels.

[0012] Furthermore, it also includes a static side of a dry-type transformer. The dry-type transformer railcar is provided with a dry-type transformer high-voltage moving contact and a dry-type transformer low-voltage moving contact. The static side of the dry-type transformer is correspondingly provided with a dry-type transformer high-voltage static contact and a dry-type transformer low-voltage static contact.

[0013] Furthermore, the high-voltage moving contact of the dry-type transformer and the low-voltage moving contact of the dry-type transformer are arranged one above the other.

[0014] The beneficial effects of the present invention are as follows: the present invention can be arranged on a dry-type transformer railcar and rails on a data center power supply, limit the movement stroke of the railcar, prevent damage to the contacts during plugging and unplugging, and ensure the safety of personnel and equipment when power is supplied to the power supply end or disconnected from the power supply end for maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural diagram of a rail vehicle limit switch according to an embodiment of the present utility model.

[0016] Figure 2 It is an exploded schematic diagram of the static contact of the limit switch according to the embodiment of the present utility model.

[0017] Figure 3 It is a structural schematic diagram of the petal contacts of an embodiment of the present utility model.

[0018] Figure 4 It is a side structural schematic diagram of a rail vehicle limit switch according to an embodiment of the present utility model.

[0019] Figure 5 It is a three-dimensional structural diagram of a dry-type transformer railcar device according to an embodiment of the present utility model.

[0020] Explanation of Figure Numbers

[0021] Limit switch static contact 10, static contact 11, insulating sleeve 12, insulating head 13, pressure spring 14, base 15, limit switch moving contact 20, insulator tube 21, petal contact 22, fixing bracket 23, adjusting wrench 24, power extension rod 25, control signal cable 26, dry-type transformer rail car 30, track wheel 31, dry-type transformer high-voltage moving contact 32, dry-type transformer low-voltage moving contact 33, track 40, dry-type transformer static side 50, dry-type transformer high-voltage static contact 51, dry-type transformer low-voltage static contact 52. DETAILED DESCRIPTION

[0022] It should be noted that, unless there is a conflict, the embodiments in this application and the features described in the embodiments can be combined with each other. The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] In the embodiments of the present invention, if there are directional indications (such as up, down, left, right, front, back, etc.), they are only used to explain the relative position relationship and movement status of the various components under a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0024] In addition, in this utility model, the terms "first," "second," etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one of these features.

[0025] Please refer to Figures 1 to 5 The railcar limit switch of the embodiment of the present invention includes a limit switch static contact and a limit switch moving contact. The limit switch static contact and the limit switch moving contact are respectively arranged on the railcar and the track. In specific implementation, railcar limit switches are arranged at both ends of the railcar's movement stroke. This is to achieve timely disconnection of the motor hydraulic device after the high-voltage electric active contact and the low-voltage load-side moving contact of the dry-type transformer are connected with the high-voltage side static contact and the low-voltage load-side static contact. During maintenance, the dry-type transformer is disconnected from the power supply end and the load end, and the hydraulic drive of the dry-type transformer railcar device is pushed to the safe maintenance area and then the power supply of the hydraulic motor is quickly cut off to avoid overvoltage damage to the main electric contacts.

[0026] The limit switch's moving contact consists of an insulator tube and a petal contact. The limit switch's stationary contact includes a static contact, an insulating sleeve, an insulating head, and a pressure spring. The petal contact is mounted on the insulator tube and consists of two opposing halves. The static contact is located at the front end of the insulating sleeve, and the end of the insulating sleeve is connected to the insulating head via a pressure spring. The pressure spring provides cushioning and ensures full contact between the static contact and the petal contact. The static contact is preferably a copper circular contact.

[0027] As an embodiment, the limit switch moving contact further includes a fixed bracket, the insulator tube is arranged on the fixed bracket, the limit switch static contact further includes a base for installation on the track, and the insulating head is connected to the base.

[0028] As an implementation method, threads are provided on the outer circumference of the insulator tube, and corresponding threaded holes are provided on the fixing bracket. The insulator tube passes through the threaded holes and is screwed to the fixing bracket, making it convenient for users to adjust the front and rear positions of the petal contacts.

[0029] The insulator tube is equipped with an adjustment wrench for adjusting the petal contact position. The end of the adjustment wrench is equipped with a plug-in power extension rod to easily adjust the position of the moving contact.

[0030] As an embodiment, a control signal cable is provided in the insulator tube, which is connected to the two halves of the petal contact. The control signal cable adopts a four-core cable, which includes a positive core, a negative core, a ground core, and a spare core. The positive core and the negative core are connected to the two halves of the petal contact respectively. Please refer to Figure 3 The control signal cable is connected to the control circuit of the hydraulic mechanism motor on the dry-type transformer rail car to achieve effective limit control of the motor to ensure the safety of the electrical device.

[0031] Please refer to Figure 5 The dry-type transformer railcar device of the present invention includes a dry-type transformer railcar, rails, and a railcar limit switch. The dry-type transformer body is mounted on the dry-type transformer railcar, and rail wheels are located at the bottom of the dry-type transformer railcar. The rails facilitate pulling the dry-type transformer railcar out for inspection or replacement of the dry-type transformer body.

[0032] As one embodiment, the dry-type transformer railcar device also includes a dry-type transformer static side. The dry-type transformer railcar is equipped with a dry-type transformer high-voltage moving contact and a dry-type transformer low-voltage moving contact. The dry-type transformer static side is correspondingly equipped with a dry-type transformer high-voltage static contact and a dry-type transformer low-voltage static contact. The dry-type transformer high-voltage moving contact and the dry-type transformer low-voltage moving contact are arranged vertically. If the dry-type transformer requires maintenance, the dry-type transformer railcar is driven to separate and move, separating the dry-type transformer high-voltage moving contact from the dry-type transformer high-voltage static contact, and separating the dry-type transformer low-voltage moving contact from the dry-type transformer low-voltage static contact, thereby disconnecting the dry-type transformer from the power supply and load terminals. If the repaired dry-type transformer or a new dry-type transformer is required, the dry-type transformer railcar is driven to move, closing the dry-type transformer high-voltage moving contact with the dry-type transformer high-voltage static contact, and closing the dry-type transformer low-voltage moving contact with the dry-type transformer low-voltage static contact, thereby connecting the dry-type transformer to the power supply and load terminals.

[0033] 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 railcar limit switch, characterized in that: It includes a limit switch static contact and a limit switch moving contact. The limit switch moving contact includes an insulator tube and a petal contact. The limit switch static contact includes a static contact, an insulating sleeve, an insulating head, and a pressure spring. The petal contact is arranged on the insulator tube. The petal contact consists of two oppositely arranged halves. The static contact is arranged at the front end of the insulating sleeve. The end of the insulating sleeve is connected to the insulating head through a pressure spring.

2. The railcar limit switch according to claim 1, wherein: The limit switch moving contact also includes a fixed bracket, the insulator tube is arranged on the fixed bracket, the limit switch static contact also includes a base for being installed on the track, and the insulating head is connected to the base.

3. The railcar limit switch according to claim 2, wherein: The outer circumference of the insulator tube is provided with threads, and the fixing bracket is correspondingly provided with threaded holes. The insulator tube passes through the threaded holes and is screwed to the fixing bracket.

4. The railcar limit switch according to claim 3, wherein: An adjusting wrench for adjusting the petal contact position is provided on the insulator tube.

5. The railcar limit switch according to claim 4, wherein: The limit switch moving contact also includes a power-assisting extension rod which is connected to the adjusting wrench in a plug-in manner.

6. The railcar limit switch according to claim 1, wherein: The insulator tube is provided with control signal cables which are respectively connected to the two halves of the petal contacts.

7. The railcar limit switch according to claim 1, wherein: The static contacts are copper circular static contacts.

8. A dry-type transformer railcar device, characterized in that: The invention comprises a dry-type transformer railcar, a rail and a railcar limit switch according to any one of claims 1 to 7. The dry-type transformer railcar is provided with a dry-type transformer body and a rail wheel is provided at the bottom of the dry-type transformer railcar.

9. The dry-type transformer railcar device according to claim 8, characterized in that: It also includes the static side of the dry-type transformer. The dry-type transformer rail car is equipped with a dry-type transformer high-voltage moving contact and a dry-type transformer low-voltage moving contact. The static side of the dry-type transformer is correspondingly equipped with a dry-type transformer high-voltage static contact and a dry-type transformer low-voltage static contact.

10. The dry-type transformer railcar device according to claim 9, characterized in that: The high-voltage moving contacts of the dry-type transformer and the low-voltage moving contacts of the dry-type transformer are arranged up and down.

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