Modularized preassembled load switch

Abstract

The utility model discloses a modularized preassembled load switch, which relates to the technical field of electric power equipment installation, and is characterized by comprising a standardized support installed on an electric pole and an independent function module integrated on the standardized support. The independent function module is integrated with a load switch, a voltage transformer, an isolation switch, a lightning arrester, a porcelain cross arm and an outgoing line terminal to form a prefabricated unit capable of being integrally hoisted, and the standardized support is provided with a positioning reference structure used for being connected with an electric pole cross arm. Main installation operation is transferred to the ground to be completed, high-altitude operation time and pole climbing operation of personnel are greatly reduced, mechanical construction is matched, safety risks such as high-altitude falling and electric shock are effectively reduced, meanwhile, the influence of severe environment on construction is reduced, and synchronous improvement of construction efficiency, safety and installation precision is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to power equipment installation technical field more specifically, it relates to a modular pre -installed load switch. BACKGROUND

[0002] In the power distribution system, the installation of load switch is an important link to ensure the stable power supply. The traditional load switch installation generally adopts single pole column type construction technology, which requires the work personnel to perform high-altitude operation after the completion of the pole assembly. The specific construction steps are as follows: first, install the cross arm, install the high-voltage lead cross arm, the arrester cross arm, the load switch cross arm, the isolation knife holder cross arm and the PT (voltage transformer) cross arm in turn, and require each cross arm to be placed horizontally and firmly connected with the pole; then assemble the power distribution equipment one by one on the cross arm, including load switch, fuse, arrester, etc., which needs to adjust the equipment position repeatedly and tighten the bolt in the process.

[0003] However, this traditional installation process has many significant shortcomings. From the safety point of view, since all installation operations are carried out in the air, the work personnel need to be in the high place of the pole for a long time, facing the safety risks of high-altitude falling and electric shock, and the security guarantee is difficult. From the construction efficiency, the installation of each component is scattered, the installation, adjustment and tightening of the cross arm and the equipment depend on manual operation, and the degree of modularization is very low, which leads to complicated construction steps and long time consumption. For example, the installation time of a single module in the traditional process is usually ≥ 4 hours, and 6 people are needed to work together, which requires a lot of manpower and makes it difficult to promote mechanical construction. From the installation precision and quality control point of view, the complexity of bolt tightening and line connection makes the construction precision mainly rely on manual experience control, which is easy to cause horizontal error and vertical error exceeding the standard, and further affects the stability and reliability of equipment operation. In addition, high-altitude operation is significantly affected by environmental factors, and the construction difficulty and risk are further increased under adverse weather conditions.

[0004] Therefore, in order to solve the above technical problems, the present application provides a modular pre -installed load switch. UTILITY MODEL CONTENT

[0005] In view of the shortcomings of the prior art, the utility model aims to provide a modular pre -installed load switch.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a modular pre -installed load switch, comprising a standardized support installed on a pole and an independent function module integrated on the standardized support; the independent function module is integrated with a load switch, a voltage transformer, an isolating switch, an arrester, a porcelain cross arm and an outgoing terminal, forming a prefabricated unit that can be hoisted as a whole, and the standardized support is provided with a positioning reference structure for connecting with the pole cross arm.

[0007] Preferably, the standardized support adopts high-strength galvanized steel material, and the support size is 1200mm*800mm*200mm.

[0008] Preferably, the load switch, the voltage transformer, the disconnector, the lightning arrester, the porcelain cross arm and the outgoing terminal are fixed on the standardized support through bolts.

[0009] Preferably, the standardized support is provided with a positioning template mounting structure for controlling installation precision.

[0010] Preferably, the independent function module is connected with the pole cross arm through bolts.

[0011] Preferably, the positioning reference structure comprises hydraulic auxiliary positioning holes and GPS positioning marks arranged on the standardized support, the hydraulic auxiliary positioning holes are matched with a hydraulic auxiliary system, and the GPS positioning marks are matched with a GPS positioning system to position installation coordinates of the independent function module.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The utility model discloses a standardized support is integrated with a load switch, a voltage transformer, a disconnector, a lightning arrester, a porcelain cross arm and an outgoing terminal to form an independent function module that can be hoisted integrally, and scattered high-altitude installation components in the traditional process are converted into prefabricated units preassembled on the ground, so that the construction mode is fundamentally changed from the structure: the modular integrated design makes each power distribution equipment form a stable function whole on the standardized support, avoids the cumbersome operation of assembling one by one on site at high altitude, solves the problems of scattered components in the traditional process and low modularization degree, positioning reference structures arranged on the standardized support can be accurately matched with a pole cross arm, the module is quickly positioned through mechanized hoisting, replaces the installation mode of traditional manual adjustment, significantly improves installation precision, avoids the problems of manual experience dependence of bolt fastening and line connection, the prefabricated unit design that can be hoisted integrally shifts main installation operations to the ground to complete, greatly reduces high-altitude operation time and personnel pole climbing operation, cooperates with mechanized construction, effectively reduces safety risks such as high-altitude falling and electric shock, simultaneously reduces the influence of adverse environment on construction, realizes the synchronous improvement of construction efficiency, safety and installation precision, and solves the problems in the background art.

[0014] 2. The utility model can control temperature at -20 DEG C to 50 DEG C and humidity at less than or equal to 85% on the ground preassembled, and can be matched with hydraulic and GPS technologies while hoisting wind speed is less than or equal to 10m / s, so that hoisting error can be controlled in a very small range, and construction quality and safety are ensured.

[0015] 3. The utility model adopts a crane and high-strength bolts to realize rapid and accurate module hoisting, and reduces high-altitude operation time and risks.

[0016] 4、The utility model discloses a replace manual pole operation by mechanization hoist, manpower input reduces from 6 people to 3 people, and the safety risk is reduced obviously. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

[0018] Figure 1 It is the schematic diagram (front view) of the utility model electric pole preloading;

[0019] Figure 2 It is the schematic diagram (front view) of the utility model standardization support intercommunication independent function module installation on the electric pole;

[0020] Figure 3 It is the front view of the utility model on the basis of installation incoming and outgoing line, measurement and control unit, grounding lead-on line; Figure 2

[0021] Figure 4 It is the side view of the utility model on the basis of installation incoming and outgoing line, measurement and control unit, grounding lead-on line in the utility model. Figure 2

[0022] In the drawing: 1, standardization support;2, independent function module;3, electric pole. DETAILED DESCRIPTION

[0023] As shown in Figures 1-4 The utility model discloses a modular preloading type load switch, including the following contents:

[0024] 1. Modular preloading design

[0025] Component module: load switch, voltage transformer (PT), disconnecting switch, lightning arrester, porcelain cross arm, outgoing line terminal are integrated on standardization support 1, form independent function module 2 (standardization support 1 is assembled according to design drawing, uses laser calibrator to ensure that horizontal error is less than or equal to 1.0mm / m).

[0026] Preloading requirement: standardization support 1 adopts high-strength galvanized steel material, and the size is 1200mm × 800mm × 200mm (length × width × height), and the error is ±2mm;The above-mentioned components are connected on standardization support 1 using M16 × 50 bolt (bolt torque uses digital display wrench calibration), and the pre-tightening torque is 80N · m ± 5%;Test standard is insulation resistance ≥100MΩ (2500VDC), and after functional debugging is qualified, it can enter the next link. ​​

[0027] 2. Ground pre-installation implementation

[0028] Work flow:

[0029] (1) Complete the assembly and fixation of standard support 1, installation of equipment and connection of wires at the warehouse or transfer point;

[0030] (2) Use the positioning template installation structure (i.e. positioning template and other tooling fixtures) to control installation accuracy, with horizontal error ≤1.5 mm / m and vertical error ≤2 mm / m;

[0031] (2) Complete grounding treatment and mark the module number (after completing insulation testing, encapsulate the module and mark "10kV-A type").

[0032] Environmental requirements: temperature -20℃~50℃, relative humidity ≤85%; the work area is equipped with dustproof and moisture-proof facilities.

[0033] 3. Mechanized lifting process

[0034] Lifting steps:

[0035] (1) Use a crane with rated load ≥5t to lift the independent functional module 2 as a whole to the pre-set position of the pole 3 cross arm (use the GPS positioning system to determine the pole cross arm installation coordinates);

[0036] (2) The above-mentioned independent functional module 2 is connected to the pole 3 cross arm through bolts (tensile strength ≥300MPa) with locking time ≤30 minutes.

[0037] Process parameters: lifting angle error ±1.5°; lifting wind speed ≤10m / s; height error ≤50mm; horizontal positioning accuracy ≤3mm.

[0038] On-site debugging and acceptance

[0039] Debugging content:

[0040] Recheck the bolt torque with error ±3%;

[0041] Test the load switch opening and closing performance with action time ≤0.1s;

[0042] Detect the arrester leakage current ≤50μA.

[0043] Acceptance standards:

[0044] Single module installation time ≤1.5 hours;

[0045] Reduce the number of manual labor to 3 (traditional process requires 6).

[0046] In summary, the utility model discloses a plurality of power distribution equipment is integrated to the standardization support 1, forms independent function module 2, reduces the on-site installation step, can integrate a plurality of power distribution equipment to the standardization support 1, forms independent function module 2, reduces the on-site installation step, adopts crane and high-strength bolt, realizes quick, accurate module hoisting, reduces the high-altitude operation time and risk.

[0047] And, in the ground preloading formula, control temperature is -20℃~50℃, humidity is ≤85%;Hoisting wind speed is ≤10m / s simultaneously, can be matched with hydraulic pressure and GPS technology, namely, the positioning reference structure for being connected with the electric pole 3 cross arm is equipped on the standardization support 1, and the positioning reference structure includes the hydraulic pressure auxiliary positioning hole and GPS positioning mark set up on the standardization support 1, the hydraulic pressure auxiliary positioning hole is matched with hydraulic pressure auxiliary system, and the GPS positioning mark is matched with GPS positioning system and is used for positioning the installation coordinates of independent function module 2, so that the hoisting error is controlled in the extremely small range by matching hydraulic pressure and GPS technology, ensures construction quality and safety (the hoisting horizontal error is controlled in ±3mm, height error is ≤50mm, reduces the high-altitude operation length and risk).

[0048] Compared with the traditional process, the scheme has the following advantages:

[0049] 1. Efficiency improvement: modular preloading shortens the on-site installation time by 62.5% (traditional ≥4 hours, this scheme ≤1.5 hours);

[0050] 2. Cost reduction: labor cost reduction of 55%, material loss rate reduction of 30% (traditional process due to complex construction process, frequent high-altitude operation, equipment adjustment, installation process is prone to material bumping, damage due to inconvenient operation and other factors, resulting in high material loss rate. The utility model is completed by equipment assembly under the condition of relatively stable ground environment and convenient operation, reducing the risk of material damage caused by high-altitude operation and repeated adjustment, and the standardized support design and preloading process makes the material use more standardized and reasonable, thereby effectively reducing the material loss rate);

[0051] 3. Safety enhancement: high-altitude operation time reduction of 80%, accident risk significantly reduced;

[0052] 4. Maintenance convenience: support module overall replacement, power failure time reduced to 1 / 3 of traditional process.

[0053] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in any form; any person skilled in the art can smoothly implement the present application according to the drawings shown in the specification and the above description; however, any person skilled in the art can make slight changes, modifications and equivalent changes of the present application within the scope of the technical scheme of the present application, and the equivalent embodiments of the present application are still within the protection scope of the technical scheme of the present application.

Claims

1. A modular pre-installed load switch, characterized in that: It includes a standardized bracket (1) installed on the pole (3) and an independent functional module (2) integrated on the standardized bracket (1); the independent functional module (2) integrates a load switch, voltage transformer, disconnect switch, surge arrester, porcelain crossarm and outgoing terminal, forming a prefabricated unit that can be hoisted as a whole; the standardized bracket (1) is provided with a positioning reference structure for connecting with the crossarm of the pole (3).

2. The modular pre-installed load switch according to claim 1, characterized in that: The standardized bracket (1) is made of high-strength galvanized steel and has a size of 1200mm×800mm×200mm.

3. A modular pre-installed load switch according to claim 1, characterized in that: The load switch, voltage transformer, disconnector, surge arrester, porcelain crossarm and outgoing terminal are fixed to the standardized bracket (1) by bolts.

4. A modular pre-installed load switch according to claim 1, characterized in that: The standardized bracket (1) is equipped with a positioning template installation structure for controlling the installation accuracy.

5. A modular pre-installed load switch according to claim 1, characterized in that: The independent functional module (2) is connected to the crossarm of the pole (3) by bolts.

6. A modular pre-installed load switch according to claim 1, characterized in that: The positioning reference structure includes a hydraulic auxiliary positioning hole and a GPS positioning mark set on a standardized bracket (1). The hydraulic auxiliary positioning hole works with the hydraulic auxiliary system, and the GPS positioning mark works with the GPS positioning system to locate the installation coordinates of the independent functional module (2).

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