A folding voltage-dividing capacitor chassis for on-site tests

Abstract

The present invention relates to a foldable voltage-dividing capacitor chassis for on-site tests, which includes a central cross and four extended stress-bearing legs respectively connected to the four forked ends of the central cross. Support feet are provided on both the central cross and the extended stress-bearing legs. The four extended stress-bearing legs are respectively rotationally connected to the four forks of the central cross through four rotating shafts. Three upper jacks and three lower jacks are provided on each of the four forks of the central cross, and three upper through-holes and three lower through-holes are provided on each of the four extended stress-bearing legs. All the upper jacks, lower jacks, upper through-holes and lower through-holes are strip-shaped. When the extended stress-bearing leg rotates to be in a straight line with the fork of the connected central cross, one pin piece passes through the first jack and the first through-hole, and another pin piece passes through the second jack and the second through-hole for limit fixation. When the third through-hole on the extended stress-bearing leg aligns with the third jack on the adjacent fork, one pin piece passes through the third jack and the third through-hole for limit fixation. Compared with the prior art, the present invention has the advantages of convenient disassembly and assembly and easy transportation, etc.

Description

Technical Field

[0001] The invention relates to an electrical equipment chassis, in particular to a foldable voltage-dividing capacitor chassis for field testing. Background Art

[0002] The field withstand voltage test value of GIS (combined electrical equipment) equipment is very high, especially the field test voltage of UHV (AC 1000kV, DC ±800kV, ±1100kV) GIS equipment is usually above 1000kV. During the field withstand voltage test, multiple capacitors need to be stacked together and used as field voltage-dividing capacitors. The height of the stacked voltage-dividing capacitors is usually above 6 meters. When the installation ground is deformed by force or the voltage-dividing capacitor is affected by other forces (such as strong wind), there is a risk of tipping over. For safety reasons, a larger cross frame will be installed at the bottom of the capacitor. In order to facilitate transportation, the cross frame of the capacitor usually adopts a central cross plus four extended force-bearing legs. This structure can increase the span of the force-bearing points, improve the stability of the voltage-dividing capacitor, and ensure the safety of the field test.

[0003] As is known in the power industry, existing capacitor chassis with extended legs are usually bolted together, such as Figure 1 This type of structure is disclosed. Since the size of the cross frame needs to be very large in the field of ultra-high voltage voltage divider capacitors, it is usually connected by a central cross 1 and an extended force-bearing leg 2. Specifically, each extended force-bearing leg 2 is connected to the four ends of the central cross 1 by bolts, and each end face is generally connected with 4 sets of bolts. It was found in field use that the cross frame of the existing structure is extremely inconvenient to install and use on site. It takes a lot of time to assemble the frame, and they are connected and fixed together by bolts one by one. It also requires the assistance of multiple people to complete the assembly, which is extremely time-consuming and labor-intensive. At the same time, after multiple uses, the cross frame of the existing structure is deformed by force at the end of the steel material and the connection holes are shifted, resulting in that only 2-3 sets of the 4 sets of bolts on each connection end face can be installed, and all of them cannot be installed, and the connection strength is greatly reduced. Summary of the invention

[0004] The object of the present invention is to provide a foldable voltage-dividing capacitor chassis for field testing.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] A foldable voltage-dividing capacitor chassis for field testing comprises a central cross and four extended force-bearing legs respectively connected to the ends of four forks of the central cross, wherein the central cross and the extended force-bearing legs are both provided with supporting feet, and the four extended force-bearing legs are respectively rotatably connected to the four forks of the central cross through four rotating shafts.

[0007] On the upper surface of the central cross, there are a first upper jack, a second upper jack, and a third upper jack. On the lower surface, there are a first lower jack, a second lower jack, and a third lower jack. On the upper surface of the extending force-bearing leg, there are a first upper through-hole, a second upper through-hole, and a third upper through-hole. On the lower surface, there are a first lower through-hole, a second lower through-hole, and a third lower through-hole. All the upper jacks, lower jacks, upper through-holes, and lower through-holes are strip-shaped. The first upper through-hole and the second upper through-hole are located at one end of the extending force-bearing leg near the rotating shaft, and the third upper through-hole is located at the end of the extending force-bearing leg far from the rotating shaft.

[0008] When the extending force-bearing leg rotates to be in a straight line with the fork of the connected central cross, a pin plate sequentially passes through the first upper jack, the first upper through-hole, the first lower through-hole, and the first lower jack, and another pin plate sequentially passes through the second upper jack, the second upper through-hole, the second lower through-hole, and the second lower jack for limiting. When the third upper through-hole on the extending force-bearing leg aligns with the third upper jack on the adjacent fork, a pin plate sequentially passes through the third upper jack, the third upper through-hole, the third lower through-hole, and the third lower jack for limiting.

[0009] The first upper jack, the second upper jack, the first lower jack, and the second lower jack are all parallel to the axis of the fork where they are located. The first upper through-hole, the second upper through-hole, the first lower through-hole, and the second lower through-hole are all parallel to the axis of the extending force-bearing leg.

[0010] The third upper jack and the third lower jack are both parallel to the axis of the fork where they are located. The third upper through-hole and the third lower through-hole form an angle with the axis of the extending force-bearing leg.

[0011] At the end of the fork of the central cross, there is a rotating shaft jack for passing through the rotating shaft. On the extending force-bearing leg, there is a rotating shaft through-hole for passing through the rotating shaft, and both the rotating shaft jack and the rotating shaft through-hole are eccentrically arranged.

[0012] At the top of each fork of the central cross, there is a first lifting ring. On the extending force-bearing leg, there are a second lifting ring and a third lifting ring.

[0013] On the central cross, there is also an installation platform, and on the installation platform, there are bolt holes for connecting the voltage-dividing capacitor.

[0014] On the upper surface and the lower surface of the ends of the four forks of the central cross, there are reinforcing ribs.

[0015] The diameters of the first upper jack, the first upper through-hole, the first lower through-hole, and the first lower jack gradually decrease in sequence. The diameters of the second upper jack, the second upper through-hole, the second lower through-hole, and the second lower jack gradually decrease in sequence. The diameters of the third upper jack, the third upper through-hole, the third lower through-hole, and the third lower jack gradually decrease in sequence.

[0016] The supporting feet are rotatable and adjustable in height.

[0017] The front of the pin piece is trapezoidal, and a hand hole for convenient removal and insertion is provided at the upper part of the pin piece.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. By connecting the central cross and the extended stress-bearing legs through a rotating shaft, the on-site installation can be completed more quickly by rotation, achieving quick fixed connection, greatly simplifying the on-site installation and disassembly processes, reducing the installation time, and at the same time realizing the integrated transportation and storage of the chassis, which is beneficial to equipment management. In addition, the connection strength of the chassis of the voltage-dividing capacitor is increased, and the stability during the long-term use of the voltage-dividing capacitor is improved.

[0020] 2. By the eccentrically arranged rotating shaft and the obliquely arranged third through hole, the length of the extended stress-bearing legs of the chassis can be increased under the same storage size, saving space.

[0021] 3. Fixed by two trapezoidal pin pieces, the upper part of the pin piece is wide and the lower part is narrow. Due to the gravity, this structure has a self-locking function and can adapt to the displacement change of the stress point caused by the ground deformation.

[0022] 4. The structure of arranging multiple supporting feet on the central cross and the extended stress-bearing legs increases the span of the stress points and improves the stability of the voltage-dividing capacitor. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of a reactor chassis in the prior art;

[0024] Figure 2 is a schematic diagram of the overall structure of an embodiment of the present invention;

[0025] Figure 3 is a schematic diagram of the central cross part of an embodiment of the present invention;

[0026] Figure 4 is a schematic diagram of the extended stress-bearing leg part of an embodiment of the present invention;

[0027] Figure 5 is a schematic diagram of the pin piece of an embodiment of the present invention;

[0028] Figure 6 is a top view of the chassis in a folded state of an embodiment of the present invention;

[0029] Figure 7 is a schematic diagram of the chassis in a folded state of an embodiment of the present invention;

[0030] Among them: 1. Central cross; 2. Extended force-bearing legs; 3. Pin pieces; 4. Rotating shafts; 5. Support feet; 101. First upper jack; 102. Second upper jack; 103. Third upper jack; 104. First lower jack; 105. Second lower jack; 106. Third lower jack; 107. Rotating shaft jack; 108. Reinforcing ribs; 109. First lifting ring; 110. Installation platform; 111. Bolt holes; 201. First upper through hole; 202. Second upper through hole; 203. Third upper through hole; 204. First lower through hole; 205. Second lower through hole; 206. Third lower through hole; 207. Rotating shaft through hole; 208. Second lifting ring; 209. Third lifting ring; 301. Manhole; 501. Adjusting handle. Detailed implementation mode

[0031] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. This embodiment is implemented on the premise of the technical solution of the present invention, and gives detailed implementation methods and specific operation processes, but the protection scope of the present invention is not limited to the following embodiments.

[0032] A foldable voltage-dividing capacitor chassis for on-site tests, as Figure 2 shown, includes a central cross 1 and four extended force-bearing legs 2 respectively connected to the four forked ends of the central cross 1. Support feet 5 are provided on both the central cross 1 and the extended force-bearing legs 2. The four extended force-bearing legs 2 are respectively rotatably connected to the four forks of the central cross 1 through four rotating shafts 4.

[0033] Specifically, as Figure 3 shown, the upper surface of the central cross 1 is provided with a first upper jack 101, a second upper jack 102 and a third upper jack 103, and the lower surface is provided with a first lower jack 104, a second lower jack 105 and a third lower jack 106. As Figure 4 shown, the upper surface of the extended force-bearing leg 2 is provided with a first upper through hole 201, a second upper through hole 202 and a third upper through hole 203, and the lower surface is provided with a first lower through hole 204, a second lower through hole 205 and a third lower through hole 206. All the upper jacks, lower jacks, upper through holes and lower through holes are strip-shaped. The first upper through hole 201 and the second upper through hole 202 are located at one end of the extended force-bearing leg 2 near the rotating shaft, and the third upper through hole 203 is located at the end of the extended force-bearing leg 2 far from the rotating shaft. As Figure 2 shown, when the extended force-bearing leg 2 rotates to be in a straight line with the fork of the connected central cross 1, a pin piece 3 sequentially passes through the first upper jack 101, the first upper through hole 201, the first lower through hole 204 and the first lower jack 104, and another pin piece 3 sequentially passes through the second upper jack 102, the second upper through hole 202, the second lower through hole 205 and the second lower jack 105 for limit fixation. As Figure 6 and Figure 7As shown, when the extended force-bearing leg 2 rotates until the third upper through-hole 203 thereon aligns with the third upper socket hole 103 on the adjacent fork, a pin piece 3 passes through the third upper socket hole 103, the third upper through-hole 203, the third lower through-hole 206, and the third lower socket hole 106 in sequence for limit fixation.

[0034] The connecting ends of the four extended force-bearing legs 2 can be inserted into the ends of the four forks of the central cross; when the pin piece 3 is not inserted, the central cross and the extended force-bearing legs are rotationally connected through a common rotating shaft.

[0035] In this embodiment, the first upper socket hole 101, the second upper socket hole 102, the first lower socket hole 104, and the second lower socket hole 105 are all parallel to the axial direction of the fork where they are located, and the first upper through-hole 201, the second upper through-hole 202, the first lower through-hole 204, and the second lower through-hole 205 are all parallel to the axial direction of the extended force-bearing leg 2. The third upper socket hole 103 and the third lower socket hole 106 are both parallel to the axial direction of the fork where they are located, and the third upper through-hole 203 and the third lower through-hole 206 form an angle with the axial direction of the extended force-bearing leg 2. Among them, there is a certain distance between the third upper socket hole 103 and the first upper socket hole 101.

[0036] The end of the fork of the central cross 1 is provided with a rotating shaft socket hole 107 for passing through the rotating shaft 4, and the extended force-bearing leg 2 is provided with a rotating shaft through-hole 207 for passing through the rotating shaft 4. Both the rotating shaft socket hole 107 and the rotating shaft through-hole 207 are eccentrically arranged. Through the eccentrically arranged rotating shaft and the inclined third through-hole, the length of the underframe extended force-bearing leg can be increased under the same storage size, saving space.

[0037] At the top of each fork of the central cross 1, a first lifting ring 109 is provided. On the extended force-bearing leg 2, a second lifting ring 208 and a third lifting ring 209 are provided. Among them, the first lifting ring 109 is located at the middle position of the fork, and the second lifting ring 208 and the third lifting ring 209 are distributed at both ends of the extended force-bearing leg 2.

[0038] The central cross 1 is further provided with a mounting platform 110, and the mounting platform 110 is provided with an appropriate number of bolt holes 111 for connecting the voltage-dividing capacitor.

[0039] Reinforcing ribs 108 are provided on the upper surface and the lower surface of the ends of the four forks of the central cross 1.

[0040] The diameters of the first upper socket hole 101, the first upper through-hole 201, the first lower through-hole 204, and the first lower socket hole 104 gradually decrease in sequence, and the diameters of the second upper socket hole 102, the second upper through-hole 202, the second lower through-hole 205, and the second lower socket hole 105 gradually decrease in sequence. The diameters of the third upper socket hole 103, the third upper through-hole 203, the third lower through-hole 206, and the third lower socket hole 106 gradually decrease in sequence.

[0041] Eight support feet 5 are respectively arranged in the middle of the four bifurcations of the central cross 1 and at the ends of the extended stress-bearing legs 2, which are used to stably support the voltage-dividing capacitor. An adjusting handle 501 is provided on the support foot 5 to facilitate manual height adjustment.

[0042] As Figure 5 shown, the front of the pin piece 3 is a trapezoid with a larger upper part and a smaller lower part. A hand hole 301 for convenient removal and insertion is provided at the upper part of the pin piece 3. Due to the action of gravity, the pin piece 3 will tightly connect the extended stress-bearing leg 2 and the central cross 1, just like the function of a wedge.

[0043] When transporting to the on-site test, the chassis is in the transport folding state. When it is necessary to change the chassis from the transport folding state to the test extended state on-site, the specific installation sequence is as follows: First, hoist the entire chassis out, as Figure 7 shown. By manually adjusting the height of the four adjusting support feet 5 on the central cross 1, the horizontal placement of the central cross 1 is achieved; then remove the four groups of pin pieces 3; then rotate the extended stress-bearing leg 2 clockwise (from a top-down view) to form a straight line with the end of the central cross 1; then insert the four groups of pin pieces 3 into the first upper jack 101 and the second upper jack 102 of the central cross 1, the first upper through hole 201 and the second upper through hole 202 of the extended stress-bearing leg 2, the first lower through hole 204 and the second lower through hole 205 of the extended stress-bearing leg 2, and the first lower jack 104 and the second lower jack 105 of the central cross, so as to achieve convenient fixed connection, as Figure 2 shown; finally, adjust the height of the four support feet 5 on the extended stress-bearing leg 2, and the installation of the chassis is completed.

[0044] When it is necessary to change the chassis from the test extended state to the transport folding state after the test is completed, the specific implementation steps can be operated in the reverse.

[0045] In addition, in some other embodiments, only two groups of jacks are provided at the four ends of the central cross 1, specifically the second upper jack 102 and the third upper jack 103 on the upper surface, and the second lower jack 105 and the third lower jack 106 on the lower surface. Correspondingly, only two groups of through holes are provided on the extended stress-bearing leg 2, specifically the second upper through hole 202 and the third upper through hole 203 on the upper surface, and the second lower through hole 205 and the third lower through hole 206 on the lower surface.

Claims

1. A folding voltage-dividing capacitor chassis for on-site tests, comprising a central cross (1) and four extended force-bearing legs (2) respectively connected to the four forked ends of the central cross (1), wherein support feet (5) are provided on both the central cross (1) and the extended force-bearing legs (2), characterized in that, The four extended force-bearing legs (2) are respectively rotatably connected to the four bifurcations of the central cross (1) through four rotating shafts (4). On the upper surface of the central cross (1), there are a first upper jack (101), a second upper jack (102) and a third upper jack (103), and on the lower surface, there are a first lower jack (104), a second lower jack (105) and a third lower jack (106). On the upper surface of the extended force-bearing leg (2), there are a first upper through hole (201), a second upper through hole (202) and a third upper through hole (203), and on the lower surface, there are a first lower through hole (204), a second lower through hole (205) and a third lower through hole (206). All the upper jacks, lower jacks, upper through holes and lower through holes are strip-shaped. The first upper through hole (201) and the second upper through hole (202) are located at one end of the extended force-bearing leg (2) near the rotating shaft, and the third upper through hole (203) is located at the end of the extended force-bearing leg (2) far from the rotating shaft. When the extended force-bearing leg (2) rotates to be in a straight line with the bifurcation of the connected central cross (1), a pin piece (3) sequentially passes through the first upper jack (101), the first upper through hole (201), the first lower through hole (204) and the first lower jack (104), and another pin piece (3) sequentially passes through the second upper jack (102), the second upper through hole (202), the second lower through hole (205) and the second lower jack (105) for limit fixation. When the third upper through hole (203) on the extended force-bearing leg (2) aligns with the third upper jack (103) on the adjacent bifurcation, a pin piece (3) sequentially passes through the third upper jack (103), the third upper through hole (203), the third lower through hole (206) and the third lower jack (106) for limit fixation. At the end of the bifurcation of the central cross (1), there is a rotating shaft jack (107) for passing through the rotating shaft (4), and on the extended force-bearing leg (2), there is a rotating shaft through hole (207) for passing through the rotating shaft (4), and both the rotating shaft jack (107) and the rotating shaft through hole (207) are eccentrically arranged. The third upper jack (103) is located between the first lifting ring (109) and the first upper jack (101) of the four bifurcations of the central cross (1).

2. The folding voltage-dividing capacitor chassis for on-site test according to claim 1, characterized in that, The first upper jack (101), the second upper jack (102), the first lower jack (104) and the second lower jack (105) are all parallel to the axial direction of the corresponding bifurcation, and the first upper through hole (201), the second upper through hole (202), the first lower through hole (204) and the second lower through hole (205) are all parallel to the axial direction of the extended force-bearing leg (2).

3. The folding voltage-dividing capacitor chassis for on-site test according to claim 2, characterized in that, The third upper jack (103) and the third lower jack (106) are both parallel to the axial direction of the corresponding bifurcation, and the third upper through hole (203) and the third lower through hole (206) form an angle with the axial direction of the extended force-bearing leg (2).

4. The folding voltage-dividing capacitor chassis for on-site tests according to claim 1, characterized in that, At the top of each bifurcation of the central cross (1), there is a first lifting ring (109), and on the extended force-bearing leg (2), there are a second lifting ring (208) and a third lifting ring (209).

5. A folding voltage-dividing capacitor chassis for on-site testing according to claim 1, characterized in that, The center cross (1) is further provided with a mounting platform (110), and the mounting platform (110) is provided with bolt holes (111) for connecting voltage-dividing capacitors.

6. The folding voltage-dividing capacitor chassis for on-site test according to claim 1, characterized in that Reinforcing ribs (108) are provided on the upper and lower surfaces of the four bifurcated ends of the center cross (1).

7. A folding voltage-dividing capacitor chassis for on-site tests according to claim 1, characterized in that, The apertures of the first upper jack (101), the first upper through hole (201), the first lower through hole (204) to the first lower jack (104) gradually decrease in sequence, the apertures of the second upper jack (102), the second upper through hole (202), the second lower through hole (205) to the second lower jack (105) gradually decrease in sequence, and the apertures of the third upper jack (103), the third upper through hole (203), the third lower through hole (206) to the third lower jack (106) gradually decrease in sequence.

8. The folding voltage-dividing capacitor chassis for on-site tests according to claim 1, characterized in that, The support feet (5) are support feet with rotatable height adjustment.

9. The folding voltage-dividing capacitor chassis for on-site test according to claim 8, characterized in that, The front surface of the latch plate (3) is trapezoidal, and a hand hole (301) for convenient removal and insertion is provided at the upper part of the latch plate (3).

Images