RU2628755C2 - Single-end service assembled chamber - Google Patents

Abstract

FIELD: electricity.

SUBSTANCE: there is a metalware in single-end service assembled chamber with the central positioning of the draw-out element. This chamber metalware comprises the draw-out element sections, the linear and relay sections, along with the busbar section. The sections are partitioned. The draw-out element section is fitted with the shutter lifting mechanism with protective shutter vertical displacement, and with the basket for draw-out element displacement. The draw-out element itself is equipped with the hand levers for displacement, with the wheels and the holding mechanism in the basket. The draw-out element section doors and the linear section doors are accomplished with the supplementary protection plates. The noted doors are endowed with the doors closing mechanisms, which are simultaneously responsible for the vertical displacement of the supplementary protection plates. The basket for draw-out element displacement is equipped with the openings wherethrough the draw-out element wheels have the possibility of movement along the bottom of the draw-out element section.

EFFECT: single-end service assembled chamber maintenance facilitation, its reliability growth, safety enhancement and overall dimension reduction.

4 cl, 14 dwg

Description

The invention relates to the field of electrical engineering and can be used in medium-voltage power plants.

Known cabinet complete switchgear (switchgear, KSO, according to clause 4.2.5 of the PUE, the switchgear is KSO - prefabricated one-way service chamber) / 1 / with an average location of the withdrawable element (VE), consisting of compartments of the withdrawable element, the compartment of busbars, and also linear and relay compartments. The movement of the wind turbine from the control position to the working one and vice versa is carried out using a screw mechanism located at the base of the wind turbine. The design of the cabinet provides locking mechanisms to prevent emergencies due to incorrect actions by staff.

The location of the drive mechanism at the base of the power unit complicates the organization of locks and adjustment of the mechanisms of the switchgear cabinet (KSO) as a whole.

Closest to the proposed one is a cabinet of a complete switchgear (switchgear, KSO) / 2 /, containing a linear and relay compartments, a drawer compartment and a busbar compartment (see Fig. 1.1 of the source / 2 /). At the same time, the drive screw mechanism is located in the removable bottom of the power unit compartment and is kinematically connected to the basket, in which the power unit itself is installed and fixed with a power switch or other electrical equipment (see Fig. 4.3, 4.5 of the source / 2 /). Thus, the movement of the RE from the control position to the working one and vice versa is carried out by moving the basket controlled by the screw mechanism in which this RE is fixed.

The doors of the power and cable compartments are equipped with additional protective sheets installed on the inside of the doors. The protective sheets have the ability to move vertically and are equipped with L-shaped hooks interacting with the elements of the cabinet metal structure (see Fig. 4.7 of the source / 2 / ). . The vertical movement of additional sheets is controlled using handles that have a rigid kinematic connection with these sheets.

The power contacts of the withdrawable element are separated from the counterparts of the switchgear cabinet (KCO) by means of shutters that rise upward when the withdrawable element is in working position and automatically lower down when the withdrawable element is moved to the control position. Motion control is carried out using levers, the axis of rotation of which are fixed in the metal structure of the cabinet (see. Fig. 4.1 source / 2 /).

The RE is moved from the repair position to the basket and vice versa using the handles installed in the RE base (see Fig. 4.8, 4.12 of the source / 2 /).

The disadvantages of this device (switchgear, CSR) include the following.

VE, being in a movable basket, creates additional pressure on it, which increases the friction force between the basket and the bottom of the VE compartment. This complicates the movement of renewable energy and complicates the maintenance of the device (switchgear, CSR) as a whole.

The door handles of the VE and cable compartment compartments and the protective sheets are not fixed, as a result of which, with the doors open, these sheets can move to the lowest position. As a result, the attendant has the opportunity to try to close the doors when the hooks and openings for them are not aligned, as a result of which these elements can be deformed. This reduces the reliability and safety of the device as a whole.

The levers for moving the curtains are fixed in one place and do not have support from the opposite place of attachment of the side. As a result, due to possible backlashes, skewing and jamming of the curtain-lifting mechanism when it is returned to its original closed state are possible. This further reduces the reliability and safety of the device as a whole.

VE handles are made stationary, which leads to an increase in the overall dimensions of the VE and the device (switchgear, KSO) as a whole. In addition, such a design of the RE does not allow to visually determine whether the RE is fixed in the basket or not. This further enhances the reliability and safety of the device as a whole.

The aim of the invention is to simplify the maintenance of the device, increasing its reliability and safety and reducing overall dimensions.

This goal is achieved by the fact that in the chamber of a one-way service team with a middle location of the withdrawable element, consisting of drawer compartments, linear and relay compartments, as well as busbar compartments, the compartments are separated by partitions, while the drawer element compartment is equipped with a curtain mechanism with a vertical by moving protective curtains moved by brackets, the rotation axis of which are installed in the metal structure of the chamber, the drawout element compartment is also equipped with a basket for moving The draw-out element, the basket moving mechanism is located in the removable bottom of the draw-out element edema, the draw-out element itself is equipped with handles for moving, the wheels and the locking mechanism in the basket, the draw-out element compartment doors and the linear compartment are made with additional protective sheets installed with the possibility of vertical movement relative to the external door elements and equipped with hooks, these doors are equipped with door closing mechanisms that simultaneously perform the function of vertical movement of additional Of additional protective sheets, the basket for moving the withdrawable element is provided with cutouts through which the wheels of the withdrawable element are able to move along the bottom of the compartment of the withdrawable element.

In addition, in the KSO chamber, the mechanism for closing doors and vertical movement of additional protective sheets can be made in the form of a handle with a flat eccentric, which is located in the neckline of the additional protective sheet, and the axis of rotation of the handle of this eccentric is installed in the outer door element.

In addition, in the KSO chamber, the partition between the withdrawable element compartment and the cable compartment can be equipped with slots designed to accommodate the elements of the brackets of the curtain-lifting mechanism opposite to the elements with rotation axes, with the possibility of moving the brackets in these slots throughout the entire vertical stroke of the curtains.

In addition, in the KCO chamber, the handles of the withdrawable element can be made with the possibility of their movement in a horizontal plane relative to the outer end surface of the base of the withdrawable element and are equipped with a kinematic assembly that ensures their movement towards the specified end surface when the withdrawable element is fixed in the basket.

The introduction into the basket of the CSR chamber of cutouts through which the wheels of the withdrawable element can move along the bottom of the compartment of the withdrawable element, reduce the friction force between the basket and the bottom of the compartment of the HE, which simplifies the maintenance of the device.

In addition to reducing the friction of the basket against the bottom of the drawout element compartment, another effect is achieved, namely, a decrease in the total volume of space occupied by this RE in the corresponding compartment of the CSR. The aforesaid is achieved due to the fact that in the prototype the wheels of the VE are located (move) along the bottom of the basket, and in the proposed technical solution - along the bottom of the VE. Thus, the linear size of the same VE, occupied by its height in the corresponding compartment in the proposed technical solution is less than in the prototype, by the thickness of the basket. This allows you to either reduce the overall height of the section of the SE, and therefore the camera as a whole without deteriorating heat transfer conditions, or, while maintaining the previous dimensions, to increase the throughput of the camera by improving such conditions.

The execution of the door closing mechanism and the vertical movement of the additional protective sheets in the form of a handle with a flat eccentric, which is located in the cutout of the additional protective sheet, and the axis of rotation of the handle of this eccentric is installed in the outer door element, allows the protective sheets to be fixed in two extreme vertical positions, which increases reliability and safety of the device as a whole.

Performing slots in the partition between the draw-out element compartment and the cable compartment to accommodate the elements of the arm of the curtain mechanism, reduces the likelihood of backlash of the curtain mechanism, which increases the reliability and safety of the device as a whole.

The execution of the handles of the withdrawable element with the possibility of their movement in a horizontal plane relative to the outer end surface of the base of the withdrawable element and the provision of their kinematic node, providing movement towards the specified end surface when fixing the withdrawable element in the basket, helps to reduce the overall dimensions of the device and provides an indication of the fixed position of the withdrawable element .

The invention is illustrated using the illustrations shown in FIG. 1-12.

In FIG. 1 shows a one-way service prefabricated chamber, which received the working name KSO-215-INVEL.

In FIG. Figure 2 shows a basket for moving a wind turbine, mounted on the bottom of the compartment of the withdrawable element with the possibility of its movement along this bottom.

In FIG. Figure 3 shows a fragment of a basket with a cutout for placement of one of the wheels of the VE.

In FIG. Figure 4 shows a fragment of a basket with a power plant installed in it (a power switch or other equipment for a power plant is not conventionally shown).

In FIG. 5 shows the door of the EV compartment in a closed, fixed state.

In FIG. 6 shows the position of the eccentric corresponding to the closed state of the door (rear view).

In FIG. 7 shows the door of the EV section in an open, fixed state.

In FIG. 8 shows the position of the eccentric corresponding to the open state of the door (rear view).

In FIG. 11 shows a renewable energy source in an unsecured state (a power switch or other equipment of a renewable energy source is not conventionally shown).

In FIG. 12 shows a RE in an unsecured state (side view).

In FIG. Figure 13 shows a wind turbine in a fixed state (a power switch or other equipment of a wind turbine is not shown conditionally).

In FIG. Figure 14 shows a RE in a fixed state (side view).

The KSO chamber is structurally divided by partitions into the following compartments: linear 1 (see Fig. 1), relay 2, compartment of the withdrawable element 3 and compartment of busbars 4. In compartment ВЭ 3 there is a withdrawable element 5 (Fig. 1) with a power switch or other medium voltage electrical equipment.

The specified withdrawable element is rigidly fixed in the basket 1 (see Fig. 2) with the possibility of moving together with this basket from the control position to the working one and vice versa. In turn, the basket 1 (Fig. 2, 3) is moved along the bottom of the compartment of the withdrawable element using a screw mechanism located at the bottom of the compartment (not shown in Fig. 2, 3).

Cutouts 2 (Fig. 2, 3) are made in the bottom of the CE section, designed to allow the wheels 2 (FIG. 4) of the withdrawable element to pass through them and thus ensure that these wheels roll along the bottom of the section of the CE when moving the basket, in which the CE itself is rigidly fixed .

Thus, due to the presence of cutouts and rigid fixation of the CE in the basket, the withdrawable element practically does not exert pressure on the basket, which helps to reduce the friction force between the basket and the bottom of the section of the CE during its movement, and this, in turn, reduces the forces applied to the drive mechanism during relocation of renewable energy and simplifies maintenance of the CSR camera as a whole.

In addition, it provides a reduction in the total volume of space occupied by this VE in the corresponding CSR compartment, which allows either to reduce the total height of the VE compartment, and consequently the camera as a whole without compromising heat transfer conditions, or, while maintaining the previous dimensions, to increase the camera throughput improving such conditions.

VE and cable compartments from the side of the service corridor are equipped with doors of a similar design.

The compartment door of the withdrawable element (see Fig. 5-8) is equipped with an additional protective sheet 4 (see Fig. 6, 8), installed with the possibility of vertical movement, and the bends of which are equipped with L-shaped hooks 6 (Fig. 5-8) . These hooks, interacting with the metal structure of the chamber, ensure reliable closing of the doors.

The vertical position of the sheet 4 is determined by the position of the eccentric 5 located inside this sheet (Fig. 6, 8). With the eccentric position 5 shown in FIGS. 5, 6, the protective sheet is in its lowest position and provides reliable adhesion of the L-shaped hooks and metal elements of the chamber.

The position of the eccentric, in turn, is determined by the position of the handle 1 (Fig. 5, 7), the axis of which is rigidly connected to the eccentric and is fixed in the outer sheet of the door. Moving the handle 1 from the position shown in FIG. 5 to the position shown in FIG. 7 leads to a change in the position of the eccentric from that shown in FIG. 6 to the one shown in FIG. 8. In this case, the protective sheet 4 goes to its highest position, the hooks 6 disengage from the metal structure of the chamber, the door is opened, and the sheet 4 is locked in its highest position.

Thus, in order to close and lock the door, it is necessary to move it to the closed state at the upper position of the protective sheet 4 and, by turning the handle 1, move the sheet 4 to its lowermost position. The door is opened in the reverse order, while due to the presence of an eccentric, the protective sheet 4 is fixed in its highest position, which reduces the possibility of attempts to close the door with the hooks lowered and increases the reliability and safety of the camera as a whole.

The draw-out compartment shown in FIG. 9, among other things, contains a curtain mechanism 1-4 (see Figs. 9, 10). The brackets 1 are installed in the metal structure of the camera with the possibility of rotation in a vertical plane relative to the attachment points. These brackets are controlled by a roll-out element and provide vertical movement of the rods 2, on which the curtains 3 are rigidly mounted.

The grooves 4 serve as additional guides for the brackets 1. The presence of such guiding grooves reduces the backlash of the curtain-lifting mechanism, which increases the reliability and safety of the camera as a whole.

The withdrawable member shown in FIG. 11, 13 (the power switch is not shown conditionally), it is fixed in the basket using the nut 1 installed in it and the shaft 2, which is an element for moving the wind turbine.

The withdrawable element (Fig. 11-14, the power switch is not shown conventionally) includes handles 3 mounted for horizontal movement relative to the outer end surface of the base of the withdrawable element 6. The handles 3 are rigidly connected to the spring-loaded bar 4 mounted on the inside side of the end surface of the base of the VE 5. The shaft 2 is fixed in the bar 4 with the possibility of rotation relative to its own axis.

To fix the CE in the basket, it is necessary to move it to the indicated basket until it stops with the elements of its metal structure, while the axis of rotation of the shaft 2 must be aligned with the axis of the nut 1 (see Fig. 11). Rotation of the shaft 2 by the manipulation handle (not shown in FIG. 11, 13) will lead to the movement of the strip 4 in the direction of the nut 1 and compression of the springs 6, the handles 3 will then move towards the outer end surface of the base of the CE 5. In the locked position, the inner surfaces the handles 3 are in contact with the outer end surface of the base 5, and the springs 6 are compressed as much as possible. The rotation of the shaft 2 in the opposite direction will lead to the return of the handles 3 to its original state (Fig. 12) and the release of the HE.

The position of the handles 3 VE in the unlocked state is selected so as to prevent the closing of the compartment door of the withdrawable element. The possibility of closing the door of the VE compartment appears only when the VE is fully locked and the handles 3 are in contact with the external end surface of the VE 5 base. This additionally increases the safety of servicing the camera as a whole and reduces its overall dimensions (by removing part of the handles inside the VE base) . In addition, the position of the handles is an indicator of a fixed or non-fixed state of the RE.

Thus, the claimed design of the chamber of the prefabricated one-way service (the working name is KSO-215-INVEL) provides easier maintenance, increases the reliability and safety of the device as a whole, and also helps to reduce its overall dimensions.

Working tests of a pilot batch of cameras KSO-215-INVEL fully confirmed the possibility of achieving the stated technical results.

List of sources used

1. A. Popov. UNIGEAR ZS1 in Russia. “News of Electrical Engineering”, No. 1 (25), 2004.

2. GK ELTECH-A. Technical information. Complete switchgear series KRU-6 (10) -ELTEH, 2013.

(http://eltech-a.ru/upload/iblock/5f9/5f94d0129f7969c56c8918d457cbca7b.pdf).

Claims (4)

1. The camera is a one-way service team with an average location of the withdrawable element, and the metal structure of the chamber consists of withdrawable element compartments, linear and relay compartments, as well as busbar compartments, the compartments are separated by partitions, while the withdrawable element compartment is equipped with a curtain-lifting mechanism with vertical movement of protective shutters moved by brackets, the axis of rotation of which are installed in the metal structure of the chamber, the compartment of the withdrawable element is also equipped with a basket for moving the bar of the element, the basket moving mechanism is located in the removable bottom of the ejection element edema, the withdrawable element itself is equipped with handles for moving, the wheels and the locking mechanism in the basket, the compartment door of the withdrawable element and the linear compartment are made with additional protective sheets installed with the possibility of vertical movement relative to the external elements doors and equipped with hooks, these doors are equipped with door closing mechanisms that simultaneously perform the function of vertical movement nyh protective sheet, characterized in that the basket for moving the withdrawable element is provided with recesses through which the wheel withdrawable element being movable along the bottom of the withdrawable unit compartment. 2. The camera is a one-way service team according to claim 1, characterized in that the mechanism for closing doors and vertical movement of additional protective sheets is made in the form of a handle with a flat eccentric, which is located in the neckline of the additional protective sheet, and the axis of rotation of the handle of this eccentric is installed in the outer element the door. 3. The camera is a one-way service team according to claim 1, characterized in that the partition between the drawout element compartment and the cable compartment is provided with slots designed to accommodate the elements of the brackets of the curtain mechanism opposite to the elements with rotation axes, with the possibility of moving the brackets in these slots on the entire vertical course of the curtains. 4. The camera is a one-way service team according to claim 1, characterized in that the handles of the withdrawable element are made with the possibility of their movement in a horizontal plane relative to the outer end surface of the base of the withdrawable element and are equipped with a kinematic node that ensures their movement towards the specified end surface when the withdrawable element is fixed in the basket.

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