Integrated binary gas storage container

Abstract

The integrated binary gas storage container comprises an SF6 storage container and a second storage container, the second storage container is fixed in the SF6 storage container in a sleeved mode, a refrigerating coil is arranged on the outer side of a shell of the second storage container in a spiral winding mode, and an inlet of the refrigerating coil and an outlet of the refrigerating coil penetrate through and extend out of the shell of the SF6 storage container. A heating pipe for heating SF6 gas and second gas is arranged at the lower part of the SF6 storage container; an SF6 gas outlet is formed in the lower part of the SF6 storage container, an SF6 gas inlet is formed in the top, and a fixed seat is arranged at the bottom; and the gas inlet pipe and the gas outlet pipe of the second storage container respectively penetrate through and extend out of the shell of the SF6 storage container. The problems that when a plurality of containers are arranged respectively, the occupied space is large, the structural layout is not attractive, and therefore sulfur hexafluoride mixed gas mixing and separating equipment cannot be miniaturized and attractive are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of recycling, processing and charging of insulating gas of high-voltage switches of electric power equipment, and in particular relates to an integrated binary gas storage container. Background Art

[0002] Sulfur hexafluoride mixed gas, such as SF6 / N2 gas mixing and separation equipment, requires storage containers, often two or even more containers are used to store SF6 and N2 respectively. The problem is that when two or even more containers are arranged separately, they will take up a lot of space in the equipment, and the overall structure and appearance are not beautiful. This is extremely unfavorable to the miniaturization and appearance design of the equipment, and is not in line with the development trend of the equipment.

[0003] In view of this, the present invention relates to a miniaturized integrated binary gas storage container. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, the utility model provides an integrated binary gas storage container.

[0005] The technical solution adopted by this utility model is:

[0006] An integrated binary gas storage container, comprising an SF6 storage container and a second storage container,

[0007] The second storage container is fixed inside the SF6 storage container.

[0008] A refrigeration coil is provided between the second storage container and the SF6 storage container, and the inlet and outlet of the refrigeration coil respectively pass through and extend to the outside of the shell of the SF6 storage container;

[0009] A heating pipe for heating SF6 gas and the second gas is provided at the lower part of the SF6 storage container;

[0010] The SF6 storage container is provided with an SF6 gas outlet at the bottom and an SF6 gas inlet at the top;

[0011] A fixing seat is provided at the bottom of the SF6 storage container;

[0012] The air inlet pipe and the air outlet pipe of the second storage container respectively penetrate and extend to the outside of the shell of the SF6 storage container.

[0013] Furthermore, at both ends of the outside of the second storage container shell along the central axis, a shaft is provided at one end, and at the other end, at least one fixed tube is fixedly provided along the axial direction. The inner wall of the SF6 storage container shell is provided with a shaft sleeve that is compatible with the shaft. The shaft outside the second storage container shell is installed in the shaft sleeve, and the fixed tube is fixedly connected to the inner wall of the SF6 storage container shell.

[0014] Furthermore, the refrigeration coil is spirally wound and arranged outside the shell of the second storage container.

[0015] Preferably, the refrigeration coil is made of copper tube or stainless steel tube.

[0016] Furthermore, one end of the heating tube located inside the SF6 storage container is closed, and the other end passes through and extends to the outside of the shell of the SF6 storage container, and a heating rod is arranged in the heating tube.

[0017] Preferably, the heating pipe is a steel pipe.

[0018] Furthermore, a sewage outlet is provided at the bottom of the SF6 storage container.

[0019] Furthermore, the air inlet pipe and the air outlet pipe of the second storage container are sealedly connected to the through hole of the shell of the SF6 storage container.

[0020] Furthermore, a sensor installation port is provided on the top of the SF6 storage container.

[0021] The present invention solves the problem that when multiple containers are arranged separately, they occupy a large space, have an unsightly structural layout, and cannot be miniaturized and beautified. A nested integrated storage container is designed for frozen storage, which saves space, reduces the size of the equipment, and is easy to use and turnover. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural diagram of the present utility model. Description of the drawings:

[0024] 1-SF6 storage container, 2-second storage container;

[0025] 3- Refrigeration coil, 4- SF6 air inlet, 5- SF6 air outlet, 6- Heating pipe, 7- Fixing seat, 8- Sewage outlet;

[0026] 9-inlet pipe, 10-outlet pipe, 11-sensor installation port, 12-shaft, 13-shaft sleeve. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present invention and to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are further described below with reference to the accompanying drawings.

[0028] It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0029] Fixed connection, as opposed to movable connection

[0030] like Figure 1 As shown, the integrated binary gas storage container includes an SF6 storage container 1 and a second storage container 2.

[0031] The second storage container 2 is fixed inside the SF6 storage container 1.

[0032] A refrigeration coil 3 is provided between the second storage container 2 and the SF6 storage container 1, and the inlet and outlet of the refrigeration coil respectively pass through and extend to the outside of the shell of the SF6 storage container;

[0033] A heating pipe 6 for heating SF6 gas and the second gas is laterally arranged at the lower part of the SF6 storage container 1;

[0034] The SF6 storage container 1 is provided with an SF6 gas outlet 5 at the bottom and an SF6 gas inlet 4 at the top;

[0035] The second storage container 2 is further provided with an air inlet pipe 9 and an air outlet pipe 10 communicating with its inner cavity, and the inlet of the air inlet pipe 9 and the outlet of the air outlet pipe 10 respectively penetrate and extend to the outside of the shell of the SF6 storage container 1;

[0036] A fixing seat 7 is provided at the bottom of the SF6 storage container 1 .

[0037] There are many ways to fix the second storage container 2 inside the SF6 storage container 1. Figure 1 A nested embodiment is provided.

[0038] At both ends of the outside of the second storage container shell along the central axis, a shaft is provided at one end, and at the other end at least two fixed tubes are fixed axially. The inner wall of the SF6 storage container shell is provided with a shaft sleeve that is compatible with the shaft. The shaft outside the second storage container shell is installed in the shaft sleeve, and the fixed tube is fixedly connected to the inner wall of the SF6 storage container 1 shell.

[0039] At least two fixed pipes are provided along one end of the central axis of the second storage container 2 for fixedly connecting the second storage container 2 to the inner wall of the shell of the SF6 storage container 1. The second storage container 2 is also provided with an inlet pipe 9 and an outlet pipe 10 for filling the second gas into the second storage container. To simplify construction, it is feasible to combine the fixed pipe and the inlet pipe 9 and the outlet pipe 10. Figure 1In the illustrated embodiment, which is a combined structure, the inlet pipe 9 and outlet pipe 10 not only serve as a fixed structure but also as the inlet and outlet pipes for the second storage container 2. Of course, the inlet pipe 9 and outlet pipe 10 are sealedly connected to the through-holes in the shell of the SF6 storage container 1 to ensure the sealing and separation of the two gases.

[0040] There are many ways to cool the gas inside the second storage container 2 and the SF6 storage container 1, such as Figure 1 In the embodiment shown, the refrigeration coil 3 is spirally wound in the cavity between the SF6 storage container 1 and the second storage container 2. Preferably, the refrigeration coil 3 is made of copper tube or stainless steel tube.

[0041] There are many ways to heat the gas in the second storage container 2 and the SF6 storage container 1. Figure 1 An embodiment of heating by a heating tube is provided.

[0042] The heating tube 6 is located inside the SF6 storage container 1 and is closed at one end, and the other end passes through and extends to the outside of the shell of the SF6 storage container 1. A heating rod is provided in the heating tube 6.

[0043] Preferably, the heating pipe 6 is a steel pipe.

[0044] Furthermore, a sewage outlet 8 is provided at the bottom of the SF6 storage container 1 for discharging sewage from the SF6 storage container 1 .

[0045] Furthermore, a sensor installation port 11 is provided on the top of the SF6 storage container 1 , which can be equipped with a temperature sensor to detect the temperature inside the SF6 storage container 1 .

[0046] The gas outlet pipe connected to the SF6 gas outlet 5 extends into the bottom of the SF6 storage container 1 .

[0047] Because this application involves gas storage, all pipelines and the through-holes or communication holes of the SF6 storage container 1 or the second storage container 2 are sealed. Sealed connections include welding or O-ring sealing. This is a common and well-known technology and will not be described in detail.

[0048] like Figure 1 The embodiment shown is described by taking the mixing and separation of binary gases of SF6 and N2 as an example.

[0049] The advocacy of green electricity has led to a shift in the insulating medium of power insulation equipment from primarily SF6 gas to SF6 mixed gases, in order to conserve SF6 usage and reduce emissions of this greenhouse gas. According to relevant literature, the proportion of the second gas in an SF6 mixture is generally small. For example, when N2 accounts for 30% of an SF6 and N2 mixture, its insulation and arc-extinguishing performance can meet the requirements of power insulation equipment.

[0050] SF6 and N2 are stored separately: the integrated binary gas storage container is installed on the SF6 and N2 mixing and separation equipment through a fixed seat. The SF6 and N2 mixing and separation equipment works to separate the mixed gas of SF6 and N2. N2 enters the second storage container 2 through the air inlet of the air inlet pipe 9 of the second storage container 2, and SF6 enters the SF6 storage container 1 through the SF6 air inlet 4. At the same time, the refrigerator on the equipment starts to work, and the refrigerant in the refrigerator enters the cooling coil 3 through the cooling coil inlet, and then returns to the refrigerator through the cooling coil outlet, completing the refrigeration work, so that the SF6 and N2 gases are liquefied, thereby achieving the purpose of storing more.

[0051] Of course, the refrigerator does not have to be installed on the equipment. A separate refrigerator can be installed as long as the refrigerator and the refrigeration coil form a refrigeration cycle.

[0052] SF6 and N2 mixing: The refrigerator on the SF6 / N2 gas mixing and separation equipment stops working, the refrigeration inside the integrated binary gas storage container stops, the heating rod in the heating tube 6 is started to heat, and the SF6 and N2 gases in the integrated binary gas storage container begin to vaporize. The gas can be extracted by using the compressor on the equipment, that is, SF6 is extracted out of the SF6 storage container through the SF6 outlet 5, and N2 is extracted through the outlet pipe 10 of the second storage container 2. After mixing, they are filled into the high-voltage switch.

[0053] Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all of the embodiments. In addition, it should be understood that although this specification describes the embodiments, not each embodiment contains only one independent technical solution. This description is only for the sake of clarity. Those skilled in the art should read the specification as a whole. The technical solutions in the various embodiments can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An integrated binary gas storage container, characterized by: comprising an SF6 storage container (1) and a second storage container (2), The second storage container (2) is fixedly mounted inside the SF6 storage container (1). A refrigeration coil (3) is provided in the shell interlayer of the second storage container (2) and the SF6 storage container (1), and the inlet and outlet of the refrigeration coil respectively penetrate and extend to the outside of the shell of the SF6 storage container; A heating pipe (6) for heating SF6 gas and a second gas is provided at the lower portion of the SF6 storage container (1); The SF6 storage container (1) is provided with an SF6 gas outlet (5) at the bottom and an SF6 gas inlet (4) at the top; A fixing seat (7) is provided at the bottom of the SF6 storage container (1); The air inlet pipe (9) and the air outlet pipe (10) of the second storage container (2) respectively penetrate and extend to the outside of the shell of the SF6 storage container (1).

2. The integrated binary gas storage container according to claim 1, characterized in that: At both ends of the outside of the second storage container shell along the central axis, a shaft is provided at one end, and at the other end at least two fixed tubes are fixed axially. The inner wall of the SF6 storage container shell is provided with a shaft sleeve that is compatible with the shaft. The shaft outside the second storage container shell is installed in the shaft sleeve, and the fixed tube is fixedly connected to the inner wall of the SF6 storage container shell.

3. The integrated binary gas storage container according to claim 1, characterized in that: The refrigeration coil (3) is made of copper tube or stainless steel tube.

4. The integrated binary gas storage container according to claim 1, characterized in that: The heating tube (6) is located inside the SF6 storage container (1), one end of which is closed, and the other end of which penetrates and extends to the outside of the shell of the SF6 storage container 1. A heating rod is provided in the heating tube (6).

5. The integrated binary gas storage container according to claim 1 or 4, characterized in that: The heating pipe (6) is a steel pipe.

6. The integrated binary gas storage container according to claim 1, characterized in that: A sewage outlet (8) is provided at the bottom of the SF6 storage container (1).

7. The integrated binary gas storage container according to claim 1, characterized in that: The air inlet pipe (9) and the air outlet pipe (10) of the second storage container (2) are sealedly connected to the through hole of the shell of the SF6 storage container (1).

8. The integrated binary gas storage container according to claim 1, characterized in that: A sensor installation opening (11) is provided on the top of the SF6 storage container (1).

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