Gas insulated switchgear based on intelligent power transformation technology

Abstract

The utility model discloses a gas insulated switchgear based on intelligent power transformation technology, which comprises a GIS body, a mechanical leveling base, a foundation anchoring part and a pendulum type clinometer, a skid-mounted platform is fixed at the bottom of the GIS body, the mechanical leveling base is mounted at the bottom of the skid-mounted platform, the mechanical leveling base comprises a plurality of supporting legs, and the supporting legs are fixed on the ground. A lifting mechanism is arranged on the supporting leg, a universal ball joint is fixed at the bottom end of the supporting leg, the universal ball joint is connected with a foundation anchoring part, the pendulum type clinometer is fixed on a shell of the GIS body, and through the unique collaborative design of the mechanical leveling base and the pendulum type clinometer, the levelness of the equipment can be accurately adjusted during installation, and the safety of the equipment is improved. The damage risk caused by basic problems to equipment is greatly reduced, long-term stable operation of the equipment is ensured, and the reliability and safety of the equipment are effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of electrical equipment, concretely relates to a gas insulation switch equipment based on intelligent substation technology. BACKGROUND

[0002] With the development of power system to high voltage, large capacity direction, gas insulation switch equipment (GIS) because of its compact structure, high reliability, strong environmental adaptability and other characteristics, gradually replace traditional air insulation switch equipment (AIS), become the core equipment in high voltage system (such as 110kV and above). GIS through the circuit breaker, disconnecting switch, grounding switch, current transformer and other components integrated in the metal closed shell filled with SF6 insulation gas, greatly reduce the equipment volume, especially suitable for land resources shortage mountainous area hydropower station, substation and other scenes. In recent years, the introduction of intelligent substation technology further promotes the upgrading of GIS, for example, by integrating partial discharge monitoring, temperature sensing, mechanical state diagnosis and other intelligent modules, realize the real-time feedback and remote control of equipment operating state. However, although the intelligent substation technology significantly improves the operation and maintenance efficiency of GIS, the problem of insufficient adaptability in the installation stage has not been effectively solved, especially in complex terrain scenes, the technical contradiction between equipment leveling and fixing is still prominent.

[0003] Traditional GIS equipment adopts rigidly connected modular structure, and each functional unit is fixedly connected through flange plate and epoxy resin pouring insulator. If the installation foundation is inclined or uneven, it will cause uneven stress of the equipment shell, easily cause shell deformation and damage the sealing structure, cause SF6 gas leakage, reduce the insulation performance, and even cause partial discharge; and the basin type insulator or supporting insulator bears additional shear stress in the non-horizontal state, which may cause cracks in long-term operation, threatening the insulation strength of the equipment; therefore, the foundation platform needs to be strictly leveled before GIS installation, and the horizontal error is usually required to be ≤2mm / m. However, in mountainous environment, limited by geological conditions (such as bare bedrock, slope distribution), the construction cost of large area flat foundation is high, and may involve complex engineering such as blasting and filling, resulting in prolonged construction period and increased investment. In the prior art, some solutions attempt to compensate for the uneven foundation by adding elastic supports or adjustable supports, but rely on rubber pads or spring buffers, which can alleviate vibration and impact, but cannot actively adapt to large slope terrain, and plastic deformation may occur under long-term compression; adjustable supports need to be adjusted in height manually, which is low in efficiency and difficult to meet the requirements in adjustment accuracy.

[0004] Therefore, the utility model provides a gas insulation switch equipment based on intelligent substation technology, which simplifies the installation process and reduces the leveling complexity while retaining the compactness advantage of GIS, and realizes the adaptability improvement in the whole life cycle of "installation-operation". UTILITY MODEL CONTENTS

[0005] To achieve the above object, the utility model provides the following technical scheme: a gas insulation switch equipment based on intelligent substation technology, including GIS body, mechanical leveling base, ground anchor and pendulum tiltmeter, the GIS body bottom is fixed with pry platform, the mechanical leveling base is installed in pry platform bottom, the mechanical leveling base includes a plurality of support legs, the support leg top is provided with lifting mechanism, the support leg bottom is fixed with spherical universal joint, the spherical universal joint and ground anchor are connected, the pendulum tiltmeter is fixed on the shell of GIS body.

[0006] As a preferred technical scheme of the utility model, the lifting mechanism includes worm gear drive assembly and screw rod, the worm gear drive assembly worm gear body and screw rod coaxial screw connection, one end of the worm gear drive assembly worm gear body is fixed with hand wheel, and the other end of the worm gear body is installed with locking assembly, the shell of the worm gear drive assembly is fixed on the support leg top, the screw rod bottom rod body penetrates the support leg top, and the rod body and the support leg are slidably connected.

[0007] As a preferred technical scheme of the utility model, the locking assembly includes ratchet wheel and pawl, the ratchet wheel is fixed on the end of the worm gear drive assembly worm gear body, the pawl and ratchet wheel are engaged, and the pawl and the shell of the worm gear drive assembly are connected with spring, the pawl and the shell of the worm gear drive assembly are rotatably connected.

[0008] As a preferred technical scheme of the utility model, the support leg bottom and ground anchor are connected through spherical universal joint and bolt fastening.

[0009] As a preferred technical scheme of the utility model, the pendulum tiltmeter includes gravity pendulum and dial, the pendulum axis of the gravity pendulum and the axis of GIS body coincide.

[0010] As a preferred technical scheme of the utility model, the support leg of the mechanical leveling base is distributed in the form of triangle or rectangle on the pry platform bottom.

[0011] Compared with the prior art, the utility model has the advantages of:

[0012] (1) the utility model through the unique mechanical leveling base and the collaborative design of pendulum tiltmeter, can accurately adjust the equipment levelness during installation, greatly reduces the damage risk of equipment caused by foundation problem, ensures the long-term stable operation of equipment, effectively improves the reliability and safety of equipment, greatly reduces the foundation flatness requirement, reduces the blasting, filling and other complex engineering in the foundation treatment process, significantly shortens the construction period, and reduces the engineering investment cost.

[0013] (2) The spherical universal joint installed at the bottom end of the supporting leg of the mechanical leveling base can freely deflect within a range of ±8°, can automatically adapt to complex terrain conditions such as installation deviation of the anchoring member or local protrusions of the foundation, and avoids the lifting screw from bearing lateral force, thereby ensuring smooth adjustment. This feature enables the device to be successfully installed in areas with complex geological conditions such as mountains, greatly expands the application range of the device, breaks the dependence on strict flat foundation, and significantly improves the adaptability of the device in different terrain environments. BRIEF DESCRIPTION OF DRAWINGS

[0014] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, illustrate the present application and explain the technical solutions of the present application, and do not constitute a limitation on the present application. In the drawings:

[0015] Fig. 1 It is a schematic diagram of the overall structure of the present application;

[0016] Fig. 2 It is a schematic diagram of the structure of the worm gear transmission assembly in the present application;

[0017] Fig. 3 It is a schematic diagram of the structure of the locking assembly in the present application;

[0018] In the drawings: 1, GIS body; 2, foundation anchoring member; 3, pendulum tiltmeter; 4, skid-mounted platform; 5, supporting leg; 6, spherical universal joint; 7, worm gear transmission assembly; 8, screw; 9, ratchet wheel; 10, hand wheel; 11, pawl; 12, mechanical leveling base; 13, worm body; 14, worm body; 15, spring. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. EMBODIMENT

[0020] Please refer to Figs. 1-3The utility model provides following technical scheme: a kind of gas insulated switchgear based on intelligent substation technology, including GIS body 1, mechanical leveling base 12, ground anchor 2 and pendulum tiltmeter 3, GIS body 1 bottom is fixed with pry platform 4, mechanical leveling base 12 is installed in pry platform 4 bottom, mechanical leveling base 12 includes multiple supporting legs 5, lifting mechanism is provided on supporting leg 5, supporting leg 5 bottom end is fixed with spherical universal joint 6, spherical universal joint 6 and ground anchor 2 are connected, pendulum tiltmeter 3 is fixed on the shell of GIS body 1.

[0021] In order to realize the accurate and efficient adjustment of the levelness of the GIS body 1, and meet the needs of equipment installation under different terrain conditions, in the embodiment, as a preferred technical solution of the utility model, the lifting mechanism includes a worm gear transmission assembly 7 and a screw rod 8, the worm gear body 13 of the worm gear transmission assembly 7 is coaxially connected with the screw rod 8, one end of the worm body 14 of the worm gear transmission assembly 7 is fixed with a hand wheel 10, and the other end of the worm body 14 is provided with a locking assembly, the shell of the worm gear transmission assembly 7 is fixed at the top end of the supporting leg 5, and the rod body of the bottom of the screw rod 8 penetrates through the top end of the supporting leg 5, and the rod body is slidingly connected with the supporting leg 5.

[0022] In order to ensure that the position of the screw rod 8 can be stably locked after the adjustment of the levelness of the GIS body 1, prevent the change of the levelness caused by external interference, and ensure the stability of the equipment operation, in the embodiment, as a preferred technical solution of the utility model, the locking assembly includes a ratchet wheel 9 and a pawl 11, the ratchet wheel 9 is fixed at the end of the worm body 14 of the worm gear transmission assembly 7, the pawl 11 is engaged with the ratchet wheel 9, a spring 15 is connected between the pawl 11 and the shell of the worm gear transmission assembly 7, and the pawl 11 is rotationally connected with the shell of the worm gear transmission assembly 7.

[0023] In order to enhance the stability of the connection between the supporting leg 5 and the ground anchor 2, and enable the supporting leg 5 to automatically adapt to the installation angle deviation caused by unevenness or slope of the foundation, and reduce the requirement for the flatness of the foundation, in the embodiment, as a preferred technical solution of the utility model, the bottom end of the supporting leg 5 and the ground anchor 2 are connected by the spherical universal joint 6 and the bolt fastening.

[0024] In order to accurately and timely monitor the inclination state of the GIS body 1, provide reliable basis for the adjustment of the levelness of the equipment, and ensure the long-term stable operation of the equipment, in the embodiment, as a preferred technical solution of the utility model, the pendulum tiltmeter 3 includes a gravity pendulum and a scale disc, and the pendulum axis of the gravity pendulum coincides with the axis of the GIS body 1.

[0025] In order to evenly disperse the weight of the device, provide reliable and stable support for the GIS body 1, ensure the stability of the device during operation, in the embodiment, as a preferred technical scheme of the utility model, the legs 5 of the mechanical leveling base 12 are distributed in a triangular or rectangular shape at the bottom of the skid platform 4.

[0026] In summary, the leveling function of the gas insulated switchgear is achieved by a pure mechanical structure, and the core lies in the cooperative work of the multi-degree-of-freedom manual leveling base and the visual level indicator, and the specific process is as follows:

[0027] Initial installation and leg pre-adjustment: after the GIS body 1 is hoisted to the preset installation position, the spherical universal joint 6 of the mechanical leveling base 12 is connected with the embedded foundation anchor 2 through bolts. At this time, the screw rod 8 of the leg 5 is at the initial stroke midpoint position of the lifting mechanism, the operator preliminarily rotates the hand wheel 10, drives the lifting screw rod 8 to extend or retract through the worm gear transmission assembly 7, and makes the GIS body 1 roughly horizontal.

[0028] Universal joint adaptive compensation: the spherical universal joint 6 allows the leg 5 to freely deflect within ±8°, avoids the lifting screw rod 8 from bearing lateral force due to installation deviation of the anchor or local protrusion of the foundation, and ensures smooth adjustment process.

[0029] Precise leveling and horizontal calibration: observe the mechanical pendulum type inclinometer 3 fixed on the shell of the GIS body 1, the gravity pendulum is always perpendicular to the ground under the action of gravity, and the position of the tip on the annular scale disc reflects the accuracy of the device inclination angle in real time. For example, when the gravity pendulum points to the "+3°" mark on the scale disc, it indicates that the GIS body 1 is inclined to that side.

[0030] Multi-leg cooperative adjustment: according to the inclination direction, rotate the hand wheel 10 of the corresponding leg 5. The worm gear body 14 converts the rotary motion of the hand wheel 10 into the vertical displacement of the screw rod 8. By alternately fine-tuning each leg 5, the pendulum returns to the "0°" center area of the scale disc, and the overall level of the device is realized.

[0031] Height locking and stability guarantee: after leveling, pull the pawl 11 of the locking mechanism to embed it into the tooth groove of the ratchet wheel 9 of the worm body 14. The continuously pressing force generated by the spring 15 loaded pawl 11 prevents the worm body 14 from rotating accidentally, thereby locking the height of the screw rod 8. This mechanical locking method does not require external power and has excellent anti-vibration performance.

[0032] Rigid reinforcement of grouting layer: inject epoxy grouting material into the gap between the spherical universal joint 6 of the leg 5 and the foundation anchor 2, and form a rigid connection after curing, which further eliminates the possibility of leg 5 micro-motion while retaining the original small-angle self-adaptive capability of the spherical universal joint 6.

[0033] Finally should be explained: in the utility model, unless there is definite provision and limitation, the term "installation", "arrangement", "connection", "fix", "screw joint" and so on should be understood broadly, for example, can be fixed connection, also can be detachable connection, or be integrated; can be mechanical connection, also can be electrical connection; can be directly connected, also can be indirectly connected through intermediate medium, can be the communication or the interaction relationship of two elements inside two elements, unless there is definite limitation, for the ordinary skilled person in the art, can understand the specific meaning of the above-mentioned term in the utility model according to specific circumstances.

[0034] The above only for the preferred embodiment of the utility model has been, and is not used to limit the utility model, although the utility model is described in detail with reference to the foregoing embodiment, for the ordinary skilled person in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features. Any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model, should be included in the protection scope of the utility model.

Claims

1. A gas insulated switchgear based on smart substation technology comprising a GIS body (1), a mechanical levelling base (12), a ground anchorage (2) and a pendulum tiltmeter (3), characterized in that: The GIS body (1) is fixed with a pry platform (4) at the bottom, the mechanical leveling base (12) is installed at the bottom of the pry platform (4), the mechanical leveling base (12) comprises a plurality of supporting legs (5), the supporting legs (5) are provided with lifting mechanisms, the supporting legs (5) are fixed with spherical universal joints (6) at the bottom ends, the spherical universal joints (6) are connected with the foundation anchoring members (2), and the pendulum tiltmeter (3) is fixed on the shell of the GIS body (1).

2. The gas insulated switchgear based on smart substation technology according to claim 1, characterized in that: The lifting mechanism comprises a worm gear transmission assembly (7) and a screw rod (8), the worm gear body (13) of the worm gear transmission assembly (7) is coaxially and threadedly connected with the screw rod (8), one end of the worm gear body (14) of the worm gear transmission assembly (7) is fixed with a hand wheel (10), the other end of the worm gear body (14) is provided with a locking assembly, the shell of the worm gear transmission assembly (7) is fixed at the top end of the supporting leg (5), the bottom rod body of the screw rod (8) penetrates through the top end of the supporting leg (5), and the rod body and the supporting leg (5) are in sliding connection.

3. The gas insulated switchgear based on smart substation technology according to claim 2, characterized in that: The locking assembly comprises a ratchet wheel (9) and a pawl (11), the ratchet wheel (9) is fixed at the end of the worm gear body (14) of the worm gear transmission assembly (7), the pawl (11) is engaged with the ratchet wheel (9), a spring (15) is connected between the pawl (11) and the shell of the worm gear transmission assembly (7), and the pawl (11) and the shell of the worm gear transmission assembly (7) are in rotary connection.

4. The gas insulated switchgear based on smart substation technology according to claim 1, characterized in that: The bottom end of the supporting leg (5) and the foundation anchoring member (2) are connected through the spherical universal joint (6) and a bolt.

5. The gas insulated switchgear based on smart substation technology according to claim 1, characterized in that: The pendulum tiltmeter (3) comprises a gravity pendulum and a scale disc, and the pendulum axis of the gravity pendulum coincides with the axis of the GIS body (1).

6. The gas insulated switchgear based on smart substation technology according to claim 1, characterized in that: The supporting legs (5) of the mechanical leveling base (12) are distributed in a triangular or rectangular shape at the bottom of the pry platform (4).

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