CN101820142B - Special compressor of expansion joint in gas-insulated metal-enclosed switchgear - Google Patents
Special compressor of expansion joint in gas-insulated metal-enclosed switchgear Download PDFInfo
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- CN101820142B CN101820142B CN2010101578788A CN201010157878A CN101820142B CN 101820142 B CN101820142 B CN 101820142B CN 2010101578788 A CN2010101578788 A CN 2010101578788A CN 201010157878 A CN201010157878 A CN 201010157878A CN 101820142 B CN101820142 B CN 101820142B
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Abstract
The invention discloses a special compressor of an expansion joint in a gas-insulated metal-enclosed switchgear, comprising a connecting threaded sleeve and two connecting screw stems, wherein the connecting threaded sleeve is in a tubular structure, and the two ends thereof are provided with internal thread; the incoming ends of the two connecting screw stems are provided with external thread matched with the internal thread in the connecting threaded sleeve, and the two connecting screw stems are respectively arranged on the two ends of the connecting threaded sleeve and are in thread connection with the connecting threaded sleeve; and each connecting screw stem comprises an external thread section, a clamp section, a hole fit section and a limit section, the external thread section is connected with the connecting threaded sleeve, the clamping section is in an external hexagonal structure, the hole fit section is in a cylindrical section and the limit section is in a tampered mitre structure. The invention has the beneficial effects that the expansion joint can be compressed conveniently, the compression amount is small, and the parts of the device are simple in process and convenient in operation.
Description
Technical field: the present invention relates to the high voltage electric power equip ment field, the special compressor of expansion joint in a kind of more precisely Cubicle Gas-Insulated Switchgear (GIS).
Background technology: Cubicle Gas-Insulated Switchgear (GIS) is to be formed by a plurality of big combination of components; GIS equipment is carrying out project installation or when maintenance, often need with among the GIS some installation component withdraw from or two sections situation that install other assembly in the middle of the installation component additional.Because the space is fixed in advance, can't directly withdraw from or add arrangement, at this moment just need utilize the compressibility of expansion joint, and the gap that withdraw from or install additional equipment and neighbouring device is adjusted.But because the special construction of expansion joint; The adjusting screw(rod) of wearing on it is considered the stretching surplus and is stayed longly; And length is drawing, pressing and changing with expansion joint itself not; That is to say that even the compression expansion joint, the restriction of conditioned screw rod does not still have enough spaces to carry out withdrawing from or installing of equipment.
Summary of the invention: to the problem of expansion joint adjusting screw(rod) limiting device installation in the prior art; The present invention is according to the special construction of expansion joint; A kind of compression set of special use is provided; The function that replaces existing adjusting screw(rod) has compression function variable-length again simultaneously to expansion joint, the realization of science the withdrawing from and installing of equipment.
For reaching above purpose; The present invention takes following technical scheme to be achieved: special compressor of expansion joint in a kind of Cubicle Gas-Insulated Switchgear; Comprise that one connects swivel nut and two connecting screw rods, the connection swivel nut is a tubular structure, and its two ends are provided with internal thread; The incoming end of two connecting screw rods is provided with and is connected the external screw thread that the swivel nut internal thread matches, two connecting screw rods lay respectively at the two ends that connect swivel nut and be connected swivel nut and be threaded.
In the such scheme, it is relevant to connect the big or small M of swivel nut internal thread and the compression stress F of expansion joint (unit: ton), wherein M=15F; The length of monolateral internal thread be the pitch diameter of thread and expansion joint maximum compressibility with; The maximum compressibility of total length and expansion joint that connects swivel nut is relevant, its length one be 2 times of maximum compressibility with 2 times of internal threads in the footpath with, connection swivel nut length direction centre position is cubic or hexagonal contour structures.
Further technical scheme of the present invention is; Described connecting screw rod comprises that external thread section, the section of seizing on both sides by the arms, hole cooperate section, spacing section, external thread section be connected the swivel nut connection, the section of seizing on both sides by the arms is outer hexagonal structure; It is cylindrical structure that the hole cooperates section, and spacing section is the taper oblique angle structure.
In the such scheme, it is column type that the hole cooperates section, and the cylinder external diameter is identical with the internal diameter of install adjustment screw hole on the flange, and cylinder length is identical with the expansion joint flange thickness, and this structure Design is beneficial to the fixing and centering of connecting screw rod; Spacing section for the taper oblique angle structure, and the size at oblique angle is identical with the chamfering of regulating screw hole, and connecting screw rod and flange is stressed when being beneficial to compression, and the length that taper is spacing section is satisfying under the prerequisite of fastening strength, helps withdrawing from or installing of equipment more more for a short time.
Beneficial effect of the present invention is: can compress expansion joint easily, and decrement is little, the parts processing of device own is simple, easy to operate.
Description of drawings: Fig. 1 is the user mode sketch map of the embodiment of the invention; Fig. 2 is that the D of Fig. 1 is to view; Fig. 3 is the structural representation of left-handed screw.
Among the figure: 1, left-handed screw; 2, connect swivel nut; 3, right handed screw; 4, expansion joint; 5, adjusting screw(rod).
Embodiment: the present invention is done further explain below in conjunction with accompanying drawing.
As shown in Figure 1; The compression set of expansion joint 4 by left-handed connecting screw rod 1, connect swivel nut 2 and dextrorotation connecting screw rod 3 is formed, connection swivel nut 2 is a tubular structure, its two ends are provided with internal thread; Connecting the swivel nut centre position is four directions or hexagonal contour structures, is convenient to the clamping of spanner.It is external thread section that the incoming end of left-handed screw 1 and right handed screw 3 is provided with being connected the external screw thread that swivel nut 2 internal threads match, and two connecting screw rods lay respectively at the two ends that connect swivel nut 2 and are threaded with being connected swivel nut 2, and left-handed screw 1 is identical with the profile of right handed screw 3; The rotation direction that only is screw thread is opposite; In conjunction with shown in Figure 3, left-handed screw 1 cooperates a section 1c, spacing section 1d to form by external thread section 1a, the section of seizing on both sides by the arms 1b, hole, external thread section 1a be connected swivel nut 2 connections; External screw thread 1a size is identical with the internal thread that connects swivel nut 2; Length is the maximum compressibility and the pitch diameter of thread sum of expansion joint, and the section of seizing on both sides by the arms 1b is outer hexagonal structure, is convenient to the clamping and the operation of spanner; It is cylindrical structure that the hole cooperates section 1c, and the cylinder external diameter is identical with the internal diameter of flange adjusted screw hole, is beneficial to the fixing and centering of connecting screw rod; Spacing section 1d is the taper oblique angle structure, and the size at oblique angle is identical with the chamfering of regulating screw hole, is beneficial to the stressed of connecting screw rod and flange.In compression during expansion joint, left and right power thrusts decision of revolving the service orientation of screw rod according to spanner is exerted oneself when downward when the needs spanner, and right handed screw is used the right flange side at expansion joint; When the needs spanner firmly made progress, left-handed screw used the left flange side at expansion joint.In order to reduce the weight of this device, one selects high strength, low-density raw material for use, for the surface that makes this covering device is difficult for oxidation, need carry out surface treatment, and one is handled for surface blackening.
In conjunction with shown in Figure 2, the quantity of the compression set that needs during use is identical with the quantity (n) of expansion joint adjusted screw rod 5.Before needs are installed or are withdrawed from equipment; Utilize adjusting screw(rod) 5 that the total length of expansion joint 4 is adjusted to original length L; Subsequently will be wherein all nuts on (n-1) root adjusting screw(rod) 5 fastening, all nuts on 1 adjusting screw(rod) 5 of residue are unclamped, make this adjusting screw(rod) 5 withdraw from expansion joint 4.
The left-handed screw 1 of compression set is passed the hole of the adjusting screw(rod) 5 that withdraws from the expansion joint 4 flange A; To connect swivel nut 2 simultaneously is connected with left-handed screw 1 through screw thread; Subsequently right handed screw 3 is passed the position, hole of expansion joint 4 flange B adjusted screw rods 5; Be connected swivel nut 2 and connect, utilize spanner to screw right handed screw 3, make compression set be in the state of being close to and get final product.
According to clockwise or counter clockwise direction, unclamp all nuts on the adjusting screw(rod) 5 adjacent with compression set, withdraw from connecting screw rod 5, according to above-mentioned installation method, second group of compression set is fastened on the expansion joint.And the like, all adjusting screw(rod)s 5 on the expansion joint 4 are replaced by compression set successively.
Before compression expansion joint 4, add fasten wherein one with spanner and connect swivel nut 2, step up and screw a left side or right handed screw with another spanner, make expansion joint the decrement of 3～5mm arranged at axis direction, withdraw from spanner subsequently.
According to above-mentioned compression method, clockwise or counter clockwise direction is screwed compression set successively, expansion joint 4 is compressed to makes equipment have enough spaces to withdraw from or install.
With equipment withdraw from or installation in position after; Adopt method identical when compressing, unclamp compression set successively, the length adjustment that makes expansion joint 4 is to original length L; Subsequently a compression set is wherein released expansion joint 4, be replaced by adjusting screw(rod) 5 and all nuts on it are fastening.And the like, all adjusting screw(rod)s on 4 on the expansion joint to be recovered, the regulatory function of expansion joint 4 is accomplished.
Above embodiment has explained that normal use compression set withdraws from or the operating process of erection unit; In the installation of reality; Visual concrete operating mode is used the quantity and the control method of compression set, needs the direction that spanner exerts oneself when the left and right corresponding relation that revolves screw rod and flange A or flange B is looked practical operation simultaneously and decides.
Above content is to combine concrete execution mode to further specify what the present invention did; Can not assert that embodiment of the present invention only limits to this; Those of ordinary skill for technical field under the present invention; All any simple modification that spirit is done according to the present invention and equivalent structure transformation or modification, the scope of patent protection that the claims that all belong to the present invention and submitted to are confirmed.
Claims (4)
1. special compressor of expansion joint in the Cubicle Gas-Insulated Switchgear; It is characterized in that: comprise that one connects swivel nut and two connecting screw rods; The connection swivel nut is a tubular structure; Its two ends are provided with internal thread, and the incoming end of two connecting screw rods is provided with and is connected the external screw thread that the swivel nut internal thread matches, two connecting screw rods lay respectively at the two ends that connect swivel nut and be connected swivel nut and be threaded; Described connecting screw rod comprises that successively the external thread section, the section of seizing on both sides by the arms, the hole that connect cooperate section, spacing section, external thread section with is connected swivel nut and connects, the section of seizing on both sides by the arms is outer hexagonal structure, the hole cooperation section is a cylindrical structure, spacing section is the taper oblique angle structure.
2. special compressor of expansion joint in the Cubicle Gas-Insulated Switchgear according to claim 1 is characterized in that: the external thread section length of connecting screw rod is the maximum compressibility and the pitch diameter of thread sum of expansion joint.
3. special compressor of expansion joint in the Cubicle Gas-Insulated Switchgear according to claim 1; It is characterized in that: the hole cooperates section to be column type; The cylinder external diameter is identical with the internal diameter of install adjustment screw hole on the flange; Cylinder length is identical with the expansion joint flange thickness, and this structure Design is beneficial to the fixing and centering of connecting screw rod; Spacing section for the taper oblique angle structure, and the size at oblique angle is identical with the chamfering in adjusting screw(rod) hole, is beneficial to the stressed of connecting screw rod and flange when compressing, and the length that taper is spacing section is satisfying under the prerequisite of fastening strength, helps withdrawing from or installing of equipment more more for a short time.
4. according to special compressor of expansion joint in arbitrary described Cubicle Gas-Insulated Switchgear among the claim 1-3, it is characterized in that: the quantity of said compression set is identical with the quantity of expansion joint adjusted screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101578788A CN101820142B (en) | 2010-04-27 | 2010-04-27 | Special compressor of expansion joint in gas-insulated metal-enclosed switchgear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101578788A CN101820142B (en) | 2010-04-27 | 2010-04-27 | Special compressor of expansion joint in gas-insulated metal-enclosed switchgear |
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| Publication Number | Publication Date |
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| CN101820142A CN101820142A (en) | 2010-09-01 |
| CN101820142B true CN101820142B (en) | 2012-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010101578788A Active CN101820142B (en) | 2010-04-27 | 2010-04-27 | Special compressor of expansion joint in gas-insulated metal-enclosed switchgear |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109755891B (en) * | 2019-01-30 | 2024-02-02 | 上海西门子高压开关有限公司 | Bus assembly and gas-insulated metal-enclosed switchgear |
| CN112078754A (en) * | 2020-08-13 | 2020-12-15 | 沪东中华造船(集团)有限公司 | Installation method of unconstrained expansion joint |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2458477Y (en) * | 2000-01-27 | 2001-11-07 | 齐世泽 | Detachable elastic bellows short joint |
| CN2739057Y (en) * | 2004-07-15 | 2005-11-09 | 中国南车集团戚墅堰机车车辆工艺研究所 | Adjustable suspension device |
| CN201369534Y (en) * | 2009-03-03 | 2009-12-23 | 湖北省输变电工程公司 | Device for adjusting space between vertical poles of electric power transmission and transformation truss column |
| CN201423597Y (en) * | 2009-05-05 | 2010-03-17 | 上海天灵开关厂有限公司 | Ejector pin with double head regulation |
-
2010
- 2010-04-27 CN CN2010101578788A patent/CN101820142B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2458477Y (en) * | 2000-01-27 | 2001-11-07 | 齐世泽 | Detachable elastic bellows short joint |
| CN2739057Y (en) * | 2004-07-15 | 2005-11-09 | 中国南车集团戚墅堰机车车辆工艺研究所 | Adjustable suspension device |
| CN201369534Y (en) * | 2009-03-03 | 2009-12-23 | 湖北省输变电工程公司 | Device for adjusting space between vertical poles of electric power transmission and transformation truss column |
| CN201423597Y (en) * | 2009-05-05 | 2010-03-17 | 上海天灵开关厂有限公司 | Ejector pin with double head regulation |
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| CN101820142A (en) | 2010-09-01 |
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