Gas-insulated metal-enclosed switchgear and chassis therefor

Abstract

The present disclosure provides a base frame for a gas insulated metal enclosed switchgear including a switch body, a control cubicle, and a cable electrically connecting the switch body and the control cubicle, wherein the base frame includes a main body configured to support the switch body and the control cubicle, the main body including a pair of longitudinal beams arranged parallel to each other, a passage for the cable to extend therein being defined between the pair of longitudinal beams; a plurality of cover plates detachably mounted to the main body to cover the passage; and a port device connected to the main body, the port device being configured to guide the cable from the switch body into the passage and to sealably connect with the cable. In this way, the cables can be gathered in the passage, such that the cable laying path is standardized.

Description

Technical Field

[0001] This disclosure pertains to the electrical field, specifically relating to a base frame for a gas-insulated metal-enclosed switchgear and the gas-insulated metal-enclosed switchgear itself. Background Technology

[0002] Gas-insulated metal-enclosed switchgear (GIS) is an electrical device that encloses a high-voltage switch in a metal housing filled with insulating gas. Typically, GIS is transported as a series of modules, which are then assembled on-site. However, errors in the site foundation can cause vertical differences at the mating surfaces between modules, posing a risk of leakage to the GIS.

[0003] It is known that the above problems can be solved by providing a base frame. By pre-installing the gas-insulated metal-enclosed switchgear on the base frame, the gas-insulated metal-enclosed switchgear can be transported as a whole, thus eliminating the aforementioned errors. For example, Chinese utility model patent CN222940437U discloses a pre-assembled switchgear in which high-voltage switch components, control components, protection components, and cables are integrated on the base frame. However, in such pre-assembled switchgear, cables are usually laid along the product surface, requiring the cable laying method to vary with the structure of the gas-insulated switch, thus complicating the cable laying process. Utility Model Content

[0004] This disclosure provides a base frame for a gas-insulated metal-enclosed switchgear, the gas-insulated metal-enclosed switchgear including a switch body, a control cabinet, and cables electrically connecting the switch body and the control cabinet. The base frame includes: a main body configured to support the switch body and the control cabinet, the main body including a pair of longitudinal beams arranged parallel to each other, defining a channel between the pair of longitudinal beams for the cable to extend therethrough; a plurality of endplates detachably mounted to the main body to cover the channel; and a port device connected to the main body, the port device being configured to guide the cable from the switch body into the channel and to seal the connection with the cable.

[0005] In this disclosure, by setting up a main body, cables can be gathered in the channel, thus standardizing the cable laying path. Furthermore, by setting up a sealing plate, the cable can be protected from the influence of the external environment, making the cable less susceptible to damage. Moreover, by setting up a port device, the port device can prevent foreign objects from entering the channel with the cable, thereby further protecting the cable from the influence of the external environment.

[0006] Furthermore, the port device includes: a housing extending from the body in the height direction of the longitudinal beam, the housing being configured to receive the cable inside the housing; and a sealing member configured to seal between the housing and the cable.

[0007] In this disclosure, by extending the housing in the height direction, the cable can have a sufficient turning radius at the port of the channel, allowing the cable to be easily laid in the channel. Furthermore, by housing the cable inside the housing, the housing can protect the cable from the influence of the external environment.

[0008] Furthermore, the housing includes a cover plate configured to be removable to expose the portion of the cable located inside the housing.

[0009] In this disclosure, by providing a removable cover, users can remove the cover to lay or maintain cables, thereby simplifying the laying and maintenance process.

[0010] Furthermore, the housing includes an inclined section that extends away from the body along both the height direction of the longitudinal beam and the width direction of the longitudinal beam.

[0011] In this disclosure, by setting an inclined section, the port device can avoid the switch body, facilitating cable laying without increasing the size of the main body. Thus, the base frame can accommodate switch bodies of different sizes without occupying excessive space.

[0012] Furthermore, the base frame also includes a bracket that extends from the port device and is configured to engage with the switch body.

[0013] In this disclosure, by setting up a bracket, the switch body can be stably held on the base frame, thereby improving the safety and reliability of the gas-insulated metal-enclosed switchgear.

[0014] Furthermore, the plurality of sealing plates includes a first sealing plate; and the base frame also includes a handle pivotally connected to the first sealing plate, such that the handle can be switched between an activated state in which the handle protrudes relative to the first sealing plate and a retracted state in which the handle is concealed within the first sealing plate.

[0015] In this disclosure, by providing a handle, the user can pivot the handle to the enabled state to easily install and remove the first cover plate, thereby facilitating cable laying and maintenance. Furthermore, the user can pivot the handle to the retracted state to reduce the space occupied by the handle, allowing the switch body and the base frame to be arranged compactly.

[0016] Furthermore, the plurality of sealing plates includes a second sealing plate, which is provided with an anti-slip pattern.

[0017] In this disclosure, by setting anti-slip patterns, users are less likely to fall when standing on the second sealing plate, thereby facilitating user inspection or operation of gas-insulated metal-enclosed switchgear.

[0018] Furthermore, the plurality of sealing plates includes a third sealing plate, which is configured to close the bottom of the control cabinet.

[0019] In this disclosure, by setting a third sealing plate, foreign objects can be prevented from entering the control cabinet through the channel, thereby preventing the control cabinet from being affected by the external environment.

[0020] Furthermore, the base frame also includes a grounding terminal configured to be electrically connected to the switch body and the control cabinet via the main body.

[0021] In this disclosure, by setting a grounding terminal, the switch body and the control cabinet do not need to be grounded through a separate cable, thereby simplifying the structure of the gas-insulated metal-enclosed switchgear.

[0022] This disclosure also provides a gas-insulated metal-enclosed switchgear, comprising: a switch body; a control cabinet; cables electrically connecting the switch body and the control cabinet; and the aforementioned base frame. Attached Figure Description

[0023] The accompanying drawings, which are included to provide a further understanding of this disclosure and form part of this disclosure, illustrate exemplary embodiments of the present disclosure and are used to explain the disclosure, but do not constitute an undue limitation of the disclosure. In the drawings:

[0024] Figure 1 This is a perspective view of the base frame of a gas-insulated metal-enclosed switchgear according to an embodiment of the present disclosure.

[0025] Explanation of icon numbers:

[0026] 100. Base frame;

[0027] 110. Main body;

[0028] 111. Longitudinal beam;

[0029] 112. Passage;

[0030] 113. Crossbeam;

[0031] 114. Support legs;

[0032] 115. Auxiliary beam;

[0033] 116. Reinforced beam;

[0034] 120. Seal the plate;

[0035] 121. First sealing plate;

[0036] 122. Second sealing plate;

[0037] 123. Third sealing plate;

[0038] 130. Port device;

[0039] 130a, First port device;

[0040] 130b, Second Port Device;

[0041] 131. Shell;

[0042] 132. Cover plate;

[0043] 133. Inclined section;

[0044] 134. Hole;

[0045] 135. Buckle;

[0046] 140. Bracket;

[0047] 150. Handle;

[0048] 160. Grounding terminal;

[0049] L, length direction;

[0050] W, width direction;

[0051] H represents the height direction. Detailed Implementation

[0052] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this disclosure or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without inventive effort are within the scope of protection of this disclosure.

[0053] It should be noted that the terminology used herein is for the purpose of describing particular implementations only and is not intended to limit the exemplary implementations according to this disclosure. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise.

[0054] The following is for reference. Figure 1Description of embodiments according to this disclosure.

[0055] Figure 1 This is a perspective view of the base frame of a gas-insulated metal-enclosed switchgear according to an embodiment of the present disclosure.

[0056] refer to Figure 1 This disclosure provides a gas-insulated metal-enclosed switchgear, comprising: a switch body (not shown); a control cabinet (not shown); a cable (not shown) electrically connecting the switch body and the control cabinet; and a base frame 100. The base frame 100 includes: a body 110 configured to support the switch body and the control cabinet, the body 110 including a pair of parallel longitudinal beams 111 defining a channel 112 for a cable to extend therethrough; a plurality of endplates 120 detachably mounted to the body 110 to cover the channel 112; and a port device 130 connected to the body 110, the port device 130 configured to guide the cable from the switch body into the channel 112 and to provide a sealed connection to the cable.

[0057] As an example, the main body 110 may also include a crossbeam 113, which may connect a pair of longitudinal beams 111 between them. For example, the longitudinal beams 111 may extend in the length direction L, and the crossbeam 113 may extend in the width direction W, which is orthogonal to the length direction L.

[0058] As an example, multiple crossbeams 113 can be arranged side by side in the length direction L. For example, a portion of the multiple crossbeams 113 (in...) Figure 1 The middle section covered by the sealing plate 120) can be set in the channel 112, and another part of the multiple crossbeams 113 (in Figure 1 The section not covered by the sealing plate 120 can be located outside the channel 112. For the crossbeam 113 located in the channel 112, the crossbeam 113 can be provided with an opening through which the cable can pass.

[0059] As an example, the main body 110 may also include a plurality of legs 114, which may be configured to support a pair of longitudinal beams 111 on the ground. For example, the legs 114 may be movably connected to the longitudinal beams 111, such that the longitudinal beams 111 can be oriented by moving the legs 114 relative to the longitudinal beams 111, for example, or oriented horizontally in the length direction L and the width direction W, or the horizontal height of the longitudinal beams 111 can be adjusted by moving the legs 114 relative to the longitudinal beams 111.

[0060] As an example, the main body 110 may also include an auxiliary beam 115, which may extend in the height direction H and be configured to connect the longitudinal beam 111 and the switch body. Here, the height direction H is a direction orthogonal to both the length direction L and the width direction W.

[0061] As an example, the auxiliary beam 115 may be at an angle to the height direction H. For instance, two adjacent auxiliary beams 115 arranged on the same longitudinal beam 111 may be far apart from each other as they extend from the longitudinal beam 111, while two adjacent auxiliary beams 115 arranged on different longitudinal beams 111 may be close to each other as they extend from the longitudinal beam 111.

[0062] As an example, the main body 110 may also include reinforcing beams 116, which may be connected between auxiliary beams 115. For example, a pair of reinforcing beams 116 may be arranged to cross each other between a pair of auxiliary beams 115. In other words, the auxiliary beams 115 and the reinforcing beams 116 may form a general truss structure.

[0063] As an example, the horizontal height of the surface (or outer surface) of the sealing plate 120 facing away from the channel 112 is not higher than the maximum horizontal height of the longitudinal beam 111. For example, the horizontal height of the outer surface of the sealing plate 120 can be aligned with the maximum horizontal height of the longitudinal beam 111.

[0064] As an example, the switch body may include a cable termination unit, a surge arrester unit, a three-position switch unit, a current transformer unit, a circuit breaker unit, and a voltage transformer unit. The cable termination unit may be connected to the first terminal of the three-position switch unit, the voltage transformer may be connected to the second terminal of the three-position switch unit, and the current transformer unit may be connected to the third terminal of the three-position switch unit. The surge arrester unit may be connected to the three-position switch unit via the cable termination unit. The three-position switch unit may be connected to the current transformer unit via the circuit breaker unit.

[0065] It should be understood that the switch body is not limited to the switch body described above, but can be configured in any possible way. For example, the switch body can be configured according to the content disclosed in CN222940437U. The entire contents of CN222940437U are incorporated herein by reference.

[0066] As an example, the base frame 100 may include a plurality of port devices 130. For example, the plurality of port devices 130 may include a first port device 130a and a second port device 130b. The first port device 130a may be configured to be side by side with at least a portion of the switch body (such as a current transformer unit) in the height direction H, the first port device 130a may be configured to be side by side with at least a portion of the switch body (such as a circuit breaker unit) in the length direction L, and the second port device 130b may be configured to be side by side with at least a portion of the switch body (such as the joint portion between a three-position switch unit and a circuit breaker unit) in the width direction W.

[0067] In this disclosure, by setting up the main body 110, cables can be gathered in the channel 112, thus standardizing the cable laying path. Furthermore, by setting up the sealing plate 120, the sealing plate 120 can prevent the cables from being affected by the external environment, making the cables less susceptible to damage. Moreover, by setting up the port device 130, the port device 130 can prevent foreign objects (e.g., water, dust, or animals) from entering the channel 112 along with the cables, thereby further preventing the cables from being affected by the external environment.

[0068] refer to Figure 1 The port device 130 includes: a housing 131 extending from the body 110 in the height direction H of the longitudinal beam 111, the housing 131 being configured to receive a cable inside the housing 131; and a sealing member configured to seal between the housing 131 and the cable.

[0069] As an example, the bottom of housing 131 may be open, allowing the interior of housing 131 to communicate with channel 112. For instance, the cover plate 120 and the bottom of housing 131 may be at approximately the same horizontal level.

[0070] As an example, the surface of housing 131 may be provided with a plurality of holes 134, each hole 134 being configured to receive a cable. For example, the holes 134 may be provided on the top of housing 131.

[0071] As an example, the sealing component may include gland heads, each of which can be aligned with a hole 134. Of course, it should be understood that the sealing component is not limited to gland heads; for example, it may be an O-ring, etc.

[0072] In this disclosure, by extending the housing 131 in the height direction H, the cable can have a sufficient turning radius at the port of the channel 112, allowing the cable to be easily laid in the channel 112. Furthermore, by housing the cable inside the housing 131, the housing 131 can protect the cable from the influence of the external environment.

[0073] refer to Figure 1The housing 131 includes a cover 132 configured to be removable to expose the portion of the cable located inside the housing 131.

[0074] As an example, cover 132 can be connected to the rest of housing 131 via snap-fit ​​135. For example, by unlocking snap-fit ​​135, cover 132 can be detached from the rest of housing 131. In other instances, cover 132 can be pivotally connected to the rest of housing 131 via, for example, a hinge. In this case, cover 132 remains connected to the rest of housing 131 via the hinge, regardless of whether cover 132 is pivoted to the open or closed position. In other words, even if cover 132 is removed, cover 132 may still be connected to the rest of housing 131.

[0075] As an example, the cover plate 132 can be oriented in a direction orthogonal to the height direction H. For instance, the cover plate 132 of the first port device 130a can be oriented in the length direction L, and the cover plate 132 of the second port device 130b (in...) Figure 1 (The portion of the housing 131 that is covered by the rest of the housing) can be oriented in the width direction W.

[0076] In this disclosure, by providing a removable cover plate 132, users can remove the cover plate 132 to lay or inspect cables, thereby simplifying the laying and inspection process.

[0077] refer to Figure 1 The housing 131 (specifically, the housing 131 of the second port device 130b) includes an inclined section 133 that extends away from the body 110 along the height direction H of the longitudinal beam 111 and also away from the body 110 along the width direction W of the longitudinal beam 111.

[0078] As an example, the inclined section 133 can cross the corresponding longitudinal beam 111 in the width direction W. In other words, when the inclined section 133 and the corresponding longitudinal beam 111 are projected in the height direction H, a part of the projection of the inclined section 133 can be located on one side of the projection of the longitudinal beam 111, and another part of the projection of the inclined section 133 can be located on the other side of the projection of the longitudinal beam 111.

[0079] In this disclosure, by setting the inclined section 133, the port device 130 can avoid the switch body, which facilitates cable laying without increasing the size of the main body 110. In this way, the base frame 100 can accommodate switch bodies of different sizes without occupying too much space.

[0080] refer to Figure 1The base frame 100 also includes a bracket 140 that extends from the port device 130 (specifically, the second port device 130b) and is configured to engage with the switch body.

[0081] As an example, the bracket 140 may extend from the housing 131. For instance, the bracket 140 may be welded to the housing 131.

[0082] As an example, the bracket 140 can be engaged with the switch body via a positioning element. For instance, the switch body and the bracket 140 may be provided with mounting holes oriented in the longitudinal direction L, through which the positioning element can pass to engage the bracket 140 with the switch body. Preferably, the positioning element can be a bolt or a pin.

[0083] In this disclosure, by providing a bracket 140, the switch body can be stably held on the base frame 100, thereby improving the safety and reliability of the gas-insulated metal-enclosed switchgear.

[0084] refer to Figure 1 The multiple cover plates 120 include a first cover plate 121. The base frame 100 also includes a handle 150, which is pivotally connected to the first cover plate 121, such that the handle 150 can be switched between an active state in which the handle 150 protrudes relative to the first cover plate 121 and a retracted state in which the handle 150 is hidden on the first cover plate 121.

[0085] Here, "hidden" does not mean that the maximum horizontal height of the handle 150 in the retracted state must be lower than or aligned with the horizontal height of the outer surface of the first cover plate 121. In fact, even when the handle 150 is in the retracted state, the handle 150 may still protrude slightly relative to the outer surface of the first cover plate 121.

[0086] As an example, the first cover plate 121 can be configured to be located between the channel 112 and the switch body.

[0087] As an example, the handle 150 can be provided at the edge of the first cover plate 121. For example, each first cover plate 121 can be provided with a pair of handles 150, which can be arranged opposite each other in the width direction W.

[0088] As an example, when the handle 150 is in the retracted state, the entire handle 150 can extend in a plane parallel to the first cover plate 121. For example, the handle 150 can extend into a generally U-shaped or ring-shaped form. When the handle 150 is in the retracted state, the portion of the handle 150 away from its pivot axis can abut against the outer surface of the first cover plate 121.

[0089] In other instances, the outer surface of the first cover plate 121 may be formed with a groove. The handle 150 may be configured to be at least partially received in the groove when in the retracted state and at least partially extended from the groove when in the activated state.

[0090] In this disclosure, by providing a handle 150, the user can pivot the handle 150 to the enabled state to easily install and remove the first cover plate 121, thereby facilitating cable laying and maintenance. Furthermore, the user can pivot the handle 150 to the retracted state to reduce the space occupied by the handle 150, allowing the switch body and the base frame 100 to be arranged compactly.

[0091] refer to Figure 1 The multiple sealing plates 120 include a second sealing plate 122, which is provided with an anti-slip pattern.

[0092] As an example, the second cover plate 122 can be configured to be adjacent to the control cabinet.

[0093] In this disclosure, by setting anti-slip patterns, users are less likely to fall when standing on the second sealing plate 122, thereby facilitating user inspection or operation of gas-insulated metal-enclosed switchgear.

[0094] refer to Figure 1 The multiple sealing plates 120 include a third sealing plate 123, which is configured to enclose the bottom of the control cabinet. In other words, the third sealing plate 123 is configured to be located between the channel 112 and the control cabinet.

[0095] As an example, the bottom of the control cabinet can be open, allowing the interior of the control cabinet to communicate with the channel 112. In this case, the bottom of the control cabinet can be partially enclosed by the third sealing plate 123, and cables can pass through the part of the bottom that is not enclosed by the third sealing plate 123.

[0096] As an example, when the switch body and the control cabinet are arranged side by side in the length direction L, the first sealing plate 121, the second sealing plate 122 and the third sealing plate 123 can be arranged side by side in the length direction L accordingly, and the second sealing plate 122 can be set between the first sealing plate 121 and the third sealing plate 123.

[0097] In this disclosure, by setting a third sealing plate 123, the third sealing plate 123 can prevent foreign objects from entering the control cabinet through the channel 112, thereby preventing the control cabinet from being affected by the external environment.

[0098] refer to Figure 1 The base frame 100 also includes a grounding terminal 160, which is configured to be electrically connected to the switch body and the control cabinet via the main body 110.

[0099] As an example, the grounding terminal 160 can be configured to be electrically connected to the switch body and the control cabinet via the longitudinal beam 111. For example, the grounding terminal 160 can be disposed on the longitudinal beam 111, and preferably, the grounding terminal 160 can be positioned at the end of the longitudinal beam 111.

[0100] In this disclosure, by setting the grounding terminal 160, the switch body and the control cabinet do not need to be grounded through a separate cable, thereby simplifying the structure of the gas-insulated metal-enclosed switchgear.

[0101] The above are merely preferred embodiments of this disclosure. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this disclosure, and these improvements and modifications should also be considered within the scope of protection of this disclosure.

Claims

1. A base frame (100) for a gas-insulated metal-enclosed switchgear, the gas-insulated metal-enclosed switchgear comprising a switch body, a control cabinet, and cables electrically connecting the switch body and the control cabinet, characterized in that, The base frame (100) includes: The main body (110) is configured to support the switch body and the control cabinet. The main body (110) includes a pair of longitudinal beams (111) arranged parallel to each other, and a channel (112) for the cable to extend therethrough is defined between the pair of longitudinal beams (111). Multiple sealing plates (120) are detachably mounted to the body (110) to cover the channel (112); and A port device (130) is connected to the body (110) and configured to guide the cable from the switch body into the channel (112) and to be sealed to the cable.

2. The base frame (100) according to claim 1, characterized in that, The port device (130) includes: A housing (131) extending from the body (110) in the height direction (H) of the longitudinal beam (111), the housing (131) being configured to receive the cable inside the housing (131); and A sealing component is configured to seal between the housing (131) and the cable.

3. The base frame (100) according to claim 2, characterized in that, The housing (131) includes a cover (132) configured to be removable to expose the portion of the cable located inside the housing (131).

4. The base frame (100) according to claim 2, characterized in that, The housing (131) includes an inclined section (133) that extends away from the body (110) along the height direction (H) of the longitudinal beam (111) and away from the body (110) along the width direction (W) of the longitudinal beam (111).

5. The base frame (100) according to any one of claims 1 to 4, characterized in that, The base frame (100) also includes a bracket (140) that extends from the port device (130) and is configured to engage with the switch body.

6. The base frame (100) according to any one of claims 1 to 4, characterized in that, The plurality of sealing plates (120) includes a first sealing plate (121); and The base frame (100) also includes a handle (150) pivotally connected to the first cover plate (121) such that the handle (150) can be switched between an activated state in which the handle (150) protrudes relative to the first cover plate (121) and a retracted state in which the handle (150) is hidden on the first cover plate (121).

7. The base frame (100) according to any one of claims 1 to 4, characterized in that, The plurality of sealing plates (120) includes a second sealing plate (122) which is provided with an anti-slip pattern.

8. The base frame (100) according to any one of claims 1 to 4, characterized in that, The plurality of sealing plates (120) includes a third sealing plate (123) configured to close the bottom of the control cabinet.

9. The base frame (100) according to any one of claims 1 to 4, characterized in that, The base frame (100) also includes a grounding terminal (160) configured to be electrically connected to the switch body and the control cabinet via the main body (110).

10. A gas-insulated metal-enclosed switchgear, characterized in that, include: Switch body; Control cabinet; Cables are used to electrically connect the switch body and the control cabinet; as well as The base frame (100) according to any one of claims 1 to 9.

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