Foldable sulfur hexafluoride inflating and vacuumizing device

Abstract

The utility model discloses a foldable sulfur hexafluoride inflating and vacuumizing device which comprises a foldable frame and a sulfur hexafluoride inflating and vacuumizing system arranged on the frame, the frame comprises a fixed frame at the lower part and a rotary folding frame at the upper part, and the fixed frame and the rotary folding frame are rotationally connected through a rotary assembly to realize the folding of the rotary folding frame; the fixing clamp assembly is used for fixing the rotary folding frame on the fixing frame; the sulfur hexafluoride inflating and vacuumizing system comprises a sulfur hexafluoride inflating module and a vacuumizing module which are used for inflating the air chamber of the high-voltage switch equipment, and the sulfur hexafluoride inflating and vacuumizing operation is realized. According to the foldable sulfur hexafluoride inflating and vacuumizing device, the vertical height of equipment is reduced, and the phenomenon that parts are damaged due to oil leakage of an important part vacuum pump when the equipment is horizontally placed in a carriage for transportation is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of power equipment high voltage switch aerating and air supplementing, specifically relates to a collapsible sulfur hexafluoride aerating and vacuumizing device. BACKGROUND

[0002] Steel cylinder gas is usually used to supplement the air of high voltage switch equipment in power equipment maintenance, so the mobile sulfur hexafluoride aerating and vacuumizing device is essential in the application of power maintenance field, which realizes the convenient movement of steel cylinder and also can aerate and vacuumize the air chamber of high voltage switch.

[0003] But the problem in transportation is that the conventional sulfur hexafluoride aerating and vacuumizing device cannot be put into the van in the process of vehicle transportation due to the too high height (the bottle body height of 40L standard steel cylinder is 1.6 meters), and the device is laid flat in the compartment, and the vacuum pump, the essential component, is laid flat and will leak oil, thereby causing the transportation problem of the device and leading to the bad feedback of the product by the customer.

[0004] There is no related technology to solve the above problems and defects. SUMMARY

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a collapsible sulfur hexafluoride aerating and vacuumizing device, which reduces the vertical height of the equipment, makes it easy to be loaded into the van, and avoids the oil leakage of the vacuum pump, the important component, caused by the flat transportation in the compartment.

[0006] The utility model adopts the technical scheme that,

[0007] A collapsible sulfur hexafluoride aerating and vacuumizing device, comprising a foldable frame and a sulfur hexafluoride aerating and vacuumizing system installed on the frame,

[0008] The frame comprises a fixed frame 3 at the lower part and a rotating folding frame 5 at the upper part, the fixed frame 3 and the rotating folding frame 5 are rotationally connected through at least two groups of rotating components, the two groups of rotating components are respectively installed on the upper part of one side of the fixed frame 3, and the folding of the rotating folding frame 5 is realized;

[0009] The frame further comprises a fixing clamp component which fixes the rotating folding frame 5 on the fixed frame 3 and is easy to open;

[0010] The sulfur hexafluoride aerating and vacuumizing system comprises a sulfur hexafluoride aerating module and a vacuumizing module for aerating the air chamber of high voltage switch equipment;

[0011] The sulfur hexafluoride inflation module comprises an inflation pipe connecting the gas storage cylinder and the high-pressure switch gas chamber, one end of the inflation pipe is connected with the switch joint 15, the other end is provided with the cylinder joint 20 connected with the gas outlet of the cylinder, the first open and close valve 16 is connected in series at the inlet of the switch joint 15, the outlet of the cylinder joint 20 is connected with the pressure regulating valve 18, the outlet of the pressure regulating valve 18 is connected with the low-pressure gauge 17.

[0012] The vacuum pumping module further comprises a vacuum pumping pipeline and the second open and close valve 14, the vacuum gauge 13, the third open and close valve 12 and the vacuum pump 2 connected in series along the gas flow direction.

[0013] Further, the heating unit for heating the gas in the cylinder is further included, the heating unit comprises a heating control unit and a heating element for heating the cylinder.

[0014] Further, the heating element is a cylinder heating sleeve 4.

[0015] Further, the high-pressure gauge 19 for detecting the outlet pressure of the cylinder is arranged at the inlet of the pressure regulating valve 18.

[0016] Further, the valve control switches, the pressure gauges, the vacuum gauge 13 and the vacuum pump 2 control switches of the sulfur hexafluoride inflation and vacuum pumping system are arranged on the electrical box 6.

[0017] Further, the vacuum pump 2 and the cylinder heating sleeve 4 are arranged on the fixing frame 3, and the movable casters 1 are arranged at the bottom of the fixing frame.

[0018] Further, the electrical box 6 is arranged on the rotating folding frame 5.

[0019] Further, the pipeline connected between the fixing frame 3 and the rotating folding frame 5 is connected by the rotary joint 11.

[0020] Further, the rotating assembly comprises a bearing seat 10 for rotating the rotating folding frame 5 and a rotating shaft 9, the bearing seat 10 is fixedly arranged on the fixing frame 3, the rotating shaft 9 is rotatably arranged on the bearing seat 10, and the bottom end of the column of the rotating folding frame 5 is rotatably sleeved on the rotating shaft 9.

[0021] Further, the bottom end of the column of the rotating folding frame 5 is provided with a mounting hole matched with the rotating shaft 9 and a rotating shape around the rotating shaft 9.

[0022] Further, the fixing clamp assembly adopts the quick clamp 8.

[0023] The beneficial effect of the present application is that the support vehicle frame of the sulfur hexafluoride inflation and vacuum system is designed as a folding type, the positions of important components are adjusted, and the pipeline at the folding position is connected by using a rotary joint, so that a foldable sulfur hexafluoride inflation and vacuum device is formed, the vertical height of the equipment is reduced, and the damage of important components caused by oil leakage of the vacuum pump during transportation of the equipment in a horizontal state is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a working state schematic view of the present application;

[0025] Figure 2 It is a folding state structure schematic view of the present application;

[0026] Figure 3 It is a rotating assembly detail view of the folding state of the present application;

[0027] Figure 4 It is a gas path control diagram of the sulfur hexafluoride inflation and vacuum system in the present application.

[0028] EXPLANATION

[0029] 1 - mobile caster, 2 - vacuum pump, 4 - heating sleeve;

[0030] 3 - fixed frame, 5 - rotating folding frame, 6 - electrical box;

[0031] 8 - fixed part quick clamp, 9 - rotating shaft, 10 - bearing seat, 11 - rotary joint;

[0032] 12 - third on-off valve, 13 - vacuum gauge, 14 - second on-off valve;

[0033] 15 - inflation port, 16 first on-off valve, 17 - low pressure gauge, 18 pressure regulating valve, 19 - high pressure gauge, 20 - cylinder joint. DETAILED DESCRIPTION

[0034] In order to make the person skilled in the art better understand the technical scheme in the embodiment of the present application, and make the above-mentioned purpose, characteristics and advantages of the present application more obvious and easy to understand, the specific implementation of the present application will be further described below in combination with the drawings.

[0035] It should be noted that the description of these embodiments is used to help understand the present application, but does not constitute a limitation of the present application. In addition, the technical features involved in each embodiment of the present application described below can be combined with each other as long as there is no conflict.

[0036] As Figure 1 and Figure 2As shown, the utility model provides a kind of foldable sulfur hexafluoride inflation and vacuumizing device, including foldable frame and the sulfur hexafluoride inflation and vacuumizing system of being installed on frame,

[0037] Frame is used to support carrying sulfur hexafluoride inflation and vacuumizing system, to avoid oil leakage of vacuum pump 2 in sulfur hexafluoride inflation and vacuumizing system in non-vertical state transportation, in the embodiment, frame is designed as lower fixed frame 3 and upper rotating folding frame 5, both are rotatably connected by rotating assembly, the folding of frame is realized, to reduce overall (vertical) height, facilitate loading to carriage transportation, avoid oil leakage of key components vacuum pump when device is placed horizontally in transportation.To prevent oil leakage of vacuum pump 2 after folding, vacuum pump 2 is not suitable to be installed on upper rotating folding frame 5 of frame, because the placement direction of vacuum pump 2 will change after folding, so vacuum pump 2 is installed on lower fixed frame 3 of frame, the height of gas storage cylinder is higher (40L gas cylinder is about 1.6m high), and it is also suitable to be arranged on lower fixed frame 3 of frame.Specifically, one side of fixed frame 3 is provided with vacuum pump 2, and the other side is provided with support plate frame for placing gas storage cylinder.Specifically, vacuum pump 2 is also provided with support bottom plate.Support bottom plate and support plate frame are fixed on fixed frame 3 respectively.

[0038] Preferably, frame design adopts flexible and convenient trolley structure, wheel 1 is arranged at the bottom of fixed frame 3, two handrails are symmetrically arranged at the front of both sides of rotating folding frame 5, wheel 1 can move frame, so that the loaded gas cylinder 10 can be transported to inflation site, flexible to use, and strong adaptability to environment.

[0039] Fixed frame 3 and rotating folding frame 5 are rotatably connected by rotating assembly, specifically, rotating assembly has at least two groups, is arranged on one side of upper part of fixed frame 3, two groups of rotating assembly form horizontal rotation axis, realize the same side of rotating folding frame 5 to overturn, further, rotating assembly includes bearing seat 10 and rotating shaft 9 for realizing the rotation of rotating folding frame 5, as shown in Figure 3 As shown, rotating shaft 9 is rotatably arranged on bearing seat 10, bearing seat 10 is fixedly installed on one side of upper part of fixed frame 3, rotating shaft 9 is rotatably sleeved with the bottom end of stand column of rotating folding frame 5.Specifically, the bottom end of stand column of rotating folding frame 5 is provided with mounting hole and rotating contour around rotating shaft 9 matched with rotating shaft 9.Specifically, as shown in the embodiment, Figure 2 Rotating folding frame 5 is rotated to the side where vacuum pump 2 is installed (40L standard steel cylinder is about 1.6m high, not suitable to be folded to this side), and considering the installation space of bottom vacuum pump 2, rotating folding frame 5 is preferably turned about 90 °.

[0040] Also included is a fixing clamp assembly for fixing the rotating folding frame 5 to the fixing frame 3 and facilitating opening; the rotating folding frame 5 is fixed to the fixing frame 3 after being folded, for the convenience of transportation, so as to avoid equipment wear or displacement caused by transportation vibration. The fixing includes direct fixing and indirect fixing, as shown in the embodiments. Figure 2 and Figure 3 In the embodiments, indirect fixing is adopted, the rotating folding frame 5 rotates to the side where the vacuum pump 2 is located, in order to achieve the folding fixing of the rotating folding frame 5 and the fixing frame 3, at least two support cross arms are arranged on the fixing frame 3, each support cross arm is parallel to the plane where the rotating folding frame 5 is located after rotating and is located below the rotating folding frame 5, and the rotating folding frame 5 is blocked by the support cross arm after being turned over. Specifically, one end of each support cross arm is fixedly installed (welded) below the bearing seat 10, and the support cross arm is parallel to the plane where the rotating folding frame 5 is located after rotating and is located below the rotating folding frame 5. A fixing clamp assembly is arranged between the support cross arm and the rotating folding frame 5, so as to achieve the fixing between the fixing frame 3 and the rotating folding frame 5. The fixing clamp assembly should be convenient to fix and open, and specifically, in the embodiments shown in Figure 2 , the fixing clamp assembly adopts a quick clamp 8. The vertical fixing of the rotating folding frame 5 and the fixing frame 3 is to stand the rotating folding frame 5, that is, to rotate the rotating folding frame 5 around the rotating shaft 9 to a standing state, at this time, the rotating folding frame 5 overlaps the upper part of the fixing frame 3, and the fixing clamp assembly arranged on the width of the overlapping part on the two side columns can achieve the vertical fixing of the two (the rotating folding frame 5 and the fixing frame 3). The fixing clamp assembly can also select the quick clamp 8.

[0041] During operation, the rotating folding frame 5 and the fixing frame 3 are vertically fixed, the whole frame is in a standing state, and by means of the handrails and the bottom wheels, the gas storage cylinder can be pushed to the operation site to perform the inflation and vacuum pumping operation; before loading on the vehicle for transportation, the rotating folding frame 5 is turned over to the side of the fixing frame 3 where the vacuum pump 2 is located, and the fixing clamp assembly is used to fix and bind the rotating folding frame 5 and the fixing frame 3, so that the rotating folding frame 5 and the fixing frame 3 are folded, thereby reducing the overall height and facilitating the transportation loading of the vehicle compartment.

[0042] As shown in Figure 4 , the sulfur hexafluoride inflation and vacuum pumping system includes a sulfur hexafluoride inflation module and a vacuum pumping module for inflating the gas chamber of the high-voltage switch device;

[0043] The sulfur hexafluoride inflation module includes an inflation pipe connected between the gas storage cylinder and the high-voltage switch gas chamber, one end of the inflation pipe is connected with a switch connector 15 as an inflation port, the other end is provided with a cylinder connector 20 connected with the gas outlet of the cylinder, the gas inlet of the switch connector 15 is connected with a first on-off valve 16 for controlling inflation, the outlet of the cylinder connector 20 is connected with a pressure regulating valve 18, the gas outlet of the pressure regulating valve 18 is connected with a low-pressure gauge 17; further, a high-pressure gauge 19 for detecting the outlet pressure of the cylinder can be arranged at the gas inlet of the pressure regulating valve 18;

[0044] The vacuumizing module comprises a vacuumizing pipeline and a second open-close valve 14, a vacuum gauge 13, a third open-close valve 12 and a vacuum pump 2 connected in series according to the gas flow direction.

[0045] The sulfur hexafluoride gas charging module further comprises a heating unit for heating the gas in the cylinder, and the heating unit comprises a heating control unit and a heating member, specifically, the heating member is a cylinder heating sleeve 4. Figure 2 As shown in the embodiment, the cylinder heating sleeve 4 is arranged on the fixing frame 3 to heat the gas in the cylinder, specifically, the outer wall of the cylinder heating sleeve 4 is fixedly connected with the fixing frame 3, the cylinder heating sleeve 4 is sleeved on the lower part of the cylinder, and the inner wall surface of the cylinder heating sleeve 4 is in contact with the outer surface of the cylinder. Preferably, the outer surface of the cylinder heating sleeve 4 is opened to facilitate the placement of the cylinder. The heating control unit controls the cylinder heating sleeve 4 to heat the gas in the cylinder during the gas charging, which is a mature technology and will not be described here.

[0046] As a further improvement, it is feasible to arrange the valve control switches, the pressure gauge, the vacuum gauge 13 and the vacuum pump 2 start-stop control switch of the sulfur hexafluoride gas charging and vacuumizing system on the electrical box 6, and it is also feasible to arrange the electrical box 6 on the upper part of the rotating folding frame 5 opposite to the operator for facilitating the operation control and observation. Further, it is also feasible to arrange the heating control unit in the electrical box 6.

[0047] As a further improvement, the pipeline connected between the fixing frame 3 and the rotating folding frame 5 is connected by a rotary joint 11 to prevent the pipeline from being wound and rolled.

[0048] The operation process comprises the gas charging and vacuumizing of the gas chamber of the high-voltage switching device and the pipeline vacuumizing.

[0049] When the high-voltage switching device gas chamber is charged, the switching joint 15 is connected to the reserved gas charging / gas supplementing port of the high-voltage switching device gas chamber, and the cylinder joint 20 is connected to the gas outlet of the cylinder, first, the high-voltage switching device gas chamber and the related gas charging pipeline are vacuumized (omitted here, see the following paragraph), then the cylinder self-provided open-close valve, the pressure regulating valve 18 and the first open-close valve 16 are opened, and the gas in the cylinder enters the high-voltage switching device gas chamber through the gas charging pipeline (succeedingly flows through the cylinder joint 20, the pressure regulating valve 18 and the first open-close valve 16); when the cylinder needs to be replaced, the pressure regulating valve 18 is closed, the cylinder self-provided open-close valve is closed, the cylinder joint 20 is connected to the new cylinder, the new cylinder self-provided open-close valve and the pressure regulating valve 18 are opened, and the gas in the new cylinder is charged into the high-voltage switching device gas chamber until the charging is completed. During the charging, when the cylinder needs to be heated, the heating of the gas in the cylinder can be realized by controlling the cylinder heating sleeve 4 through the heating control unit.

[0050] The high-voltage switchgear chamber is vacuumized. Before the new high-voltage switchgear chamber is inflated, the high-voltage switchgear chamber and the related inflation pipeline are vacuumized. The storage cylinder self-provided shutoff valve is closed, when the low-pressure gauge 17 detects that the pressure is less than or equal to the normal pressure, the vacuum pump 2 is started, the third shutoff valve 12 is opened, then the second shutoff valve 14 is opened, the first shutoff valve 16 and the pressure regulating valve 18 are opened, the air in the high-voltage switchgear chamber and the gas in the inflation pipeline are vacuumized and removed, until the detected value of the vacuum gauge 13 reaches the preset vacuum degree requirement, then the first shutoff valve 16 and the pressure regulating valve 18, the second shutoff valve 14, the third shutoff valve 12, and the vacuum pump 2 are closed.

[0051] When the high-voltage switchgear chamber is inflated, only the pipeline related to the inflation needs to be vacuumized. The storage cylinder self-provided shutoff valve is closed, the first shutoff valve 16 is closed, the pressure regulating valve 18 is opened, when the low-pressure gauge 17 detects that the pressure is less than or equal to the normal pressure, the vacuum pump 2 is started, the third shutoff valve 12 is opened, then the second shutoff valve 14 is opened, the first shutoff valve 16 and Cylinder connection 20 the inflation pipeline between the first shutoff valve 16 and the third shutoff valve 12 are vacuumized. Until the detected value of the vacuum gauge 13 reaches the preset vacuum degree requirement, then the pressure regulating valve 18, the second shutoff valve 14, the third shutoff valve 12, and the vacuum pump 2 are closed, and the vacuumization operation is stopped.

[0052] The power of the SF6 inflation and vacuumization system is supplied by 220V AC, and the start-stop control of the vacuum pump 2 can be realized by a trigger.

[0053] The valves of the SF6 inflation and vacuumization system can be manual valves or electric valves. In view of the tediousness of manual control, the electric valves are preferred to adapt to the development trend of automatic control. For the convenience of control, the control switches of the electric valves can be arranged on the electrical box 6.

[0054] The SF6 inflation and vacuumization system further comprises a controller, which performs the automatic opening and closing of the electric valves, the start-stop control of the vacuum pump 2, and realizes the start-stop of the SF6 inflation and vacuumization operation.

[0055] The controller can be a PLC controller, and other controllers can also be adopted, which is not limited here.

[0056] Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. In addition, it should be understood that although the present application is described in the form of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and the person skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be properly combined to form other embodiments which can be understood by the person skilled in the art.

Claims

1. A foldable SF6 inflation and vacuum device, characterized in that: it comprises a foldable frame and a SF6 inflation and vacuum system installed on the frame; the frame comprises a lower fixed frame (3) and an upper rotary folding frame (5), the fixed frame (3) and the rotary folding frame (5) are rotationally connected through at least two groups of rotary assemblies to realize folding of the rotary folding frame (5); the frame further comprises a fixing clamp assembly which is easy to open and used to fix the rotary folding frame (5) on the fixed frame (3); the SF6 inflation and vacuum system comprises a SF6 inflation module and a vacuum module used to inflate a gas chamber of a high-voltage switch device; the SF6 inflation module comprises an inflation pipe connected with a gas storage cylinder and the high-voltage switch gas chamber, one end of the inflation pipe is connected with a switch connector (15) as an inflation port, the other end of the inflation pipe is provided with a cylinder connector (20) connected with a gas outlet of the cylinder, a first open and close valve (16) is connected in series at the inlet of the switch connector (15) on the inflation pipe, a pressure regulating valve (18) is connected at the outlet of the cylinder connector (20), a low-pressure gauge (17) is connected at the outlet of the pressure regulating valve (18); the vacuum module comprises a vacuum pipe and a second open and close valve (14), a vacuum gauge (13), a third open and close valve (12) and a vacuum pump (2) connected in series along the gas flow direction; the inlet end of the vacuum pipe is connected to the gas inlet end of the first open and close valve (16).

2. The foldable SF6 inflation and vacuum device according to claim 1, characterized in that: it further comprises a heating unit used to heat the gas in the cylinder, the heating unit comprises a heating control unit and a heating member used to heat the cylinder.

3. The foldable SF6 inflation and vacuum device according to claim 2, characterized in that: the heating member is a cylinder heating sleeve (4).

4. The foldable SF6 inflation and vacuum device according to claim 1 or 2, characterized in that: a high-pressure gauge (19) is installed at the inlet of the pressure regulating valve (18) to detect the outlet pressure of the cylinder.

5. The foldable SF6 inflation and vacuum device according to claim 1 or 2, characterized in that: all the valve control switches, pressure gauges, the vacuum gauge (13) and the vacuum pump (2) of the SF6 inflation and vacuum system are installed on an electrical box (6).

6. The foldable SF6 inflation and vacuum device according to claim 1 or 2, characterized in that: the vacuum pump (2) and the cylinder heating sleeve (4) are installed on the fixed frame (3), and a movable caster (1) is installed at the bottom of the fixed frame (3).

7. The foldable SF6 inflation and vacuum device according to claim 1 or 2, characterized in that: the pipe connected between the fixed frame (3) and the rotary folding frame (5) is connected through a rotary joint (11).

8. The foldable SF6 inflation and vacuum device according to claim 1 or 2, characterized in that: the rotary assembly comprises a bearing seat (10) and a rotary shaft (9) used to realize rotation of the rotary folding frame (5), the bearing seat (10) is installed on the upper part of the fixed frame (3), the rotary shaft (9) is rotationally assembled on the bearing seat (10), and the bottom end of a column of the rotary folding frame (5) is rotationally sleeved on the rotary shaft (9).

9. The foldable SF6 inflation and vacuum device according to claim 1 or 2, characterized in that: the bottom end of the column of the rotary folding frame (5) is provided with an installation hole matched with the rotary shaft (9) and a rotary shape around the rotary shaft (9).

10. The foldable SF6 inflation and vacuum device according to claim 1 or 2, characterized in that: the fixing clamp assembly is a quick clamp (8). ​ ​ ​ ​ ​ 6. A collapsible Sulfur Hexafluoride inflation and evacuation device according to claim 1 or 2, characterized in that: ​ 7. The collapsible Sulfur Hexafluoride inflation and evacuation device of any one of claims 1 or 2, wherein: ​ 8. The collapsible Sulfur Hexafluoride inflation and evacuation device of any one of claims 1 or 2, wherein: ​ 9. The collapsible Sulfur Hexafluoride inflation and evacuation device of any one of claims 1 or 2, wherein: ​ 10. The collapsible Sulfur Hexafluoride inflation and evacuation device of any one of claims 1 or 2, wherein: ​

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