Double-tank type helium pressurizing furnace

Abstract

The utility model discloses a double-tank type helium pressurizing furnace which comprises a first vacuum pump, a buffer tank, a pressurizing pump, a second vacuum pump, a first valve, a second valve, a third valve, a fourth valve, a fifth valve, a sixth valve, a seventh valve, a first tank body, a second tank body, a safety valve, a pressure gauge, a connecting pipeline and an air inlet valve, the utility model can effectively solve the problems of the existing equipment, improve the production efficiency of the equipment through a double-tank mode, and greatly improve the recovery efficiency of helium by adopting the mode of combining the oilless vacuum pump, the dry vacuum pump, the compression pump and the buffer tank, the recovery rate is up to 99.5%, the helium is high in price, and the cost is low. The recovery efficiency is improved, and the problem that the production cost of customers is high can be solved.

Description

Technical Field

[0001] This utility model relates to the field of vacuum furnace equipment technology, specifically a dual-tank helium pressurization furnace. Background Technology

[0002] In the leak detection process of heat pipes, VCs and other heat exchange devices in 3C electronic products, a dual-tank helium pressurization furnace is usually used. However, the dual-tank helium pressurization furnaces on the market are currently single-tank structures, which have disadvantages such as complicated and cumbersome operation, low efficiency, and low helium recovery rate, resulting in large helium consumption. Utility Model Content

[0003] In view of the above-mentioned shortcomings in the existing technology, the purpose of this utility model is to provide a dual-tank helium pressurization furnace that is simple to operate and has higher helium recovery efficiency.

[0004] The technical solution adopted by this utility model to achieve the above objectives is: a dual-tank helium pressurization furnace, comprising a first vacuum pump, a buffer tank, a booster pump, a second vacuum pump, a first tank body, a second tank body, and connecting pipes.

[0005] The air inlet of the first vacuum pump is connected to the interior of the first tank and the second tank via the connecting pipes. A first valve is installed on the connecting pipe between the first vacuum pump and the first tank, and a second valve is installed on the connecting pipe between the first vacuum pump and the second tank.

[0006] The air inlet of the second vacuum pump is connected to the interior of the first tank and the second tank via the connecting pipes. A third valve is installed on the connecting pipe between the second vacuum pump and the first tank, and a fourth valve is installed on the connecting pipe between the second vacuum pump and the second tank.

[0007] The air inlet of the buffer tank is connected to the air outlet of the first vacuum pump via the connecting pipe. The air outlet of the buffer tank is connected to the first air inlet of the booster pump via the connecting pipe. The second air inlet of the booster pump is connected to an external air source via the connecting pipe. A fifth valve is installed on the connecting pipe connected to the second air inlet of the booster pump.

[0008] The air outlet of the booster pump is connected to the interior of the first tank and the second tank via the connecting pipes. A sixth valve is installed on the connecting pipe between the booster pump and the first tank, and a seventh valve is installed on the connecting pipe between the booster pump and the second tank.

[0009] The first tank and the second tank are respectively equipped with pressure gauges and air inlet valves that communicate with their interiors.

[0010] In one embodiment: the side walls of the first tank and the second tank are respectively provided with safety valves that communicate with their interiors.

[0011] In one embodiment: the pressure gauge and the safety valve are respectively located in the middle part of the side wall of the first tank and the second tank, and the air inlet valve is respectively located at the bottom of the first tank and the second tank.

[0012] In one embodiment: the first vacuum pump, the booster pump, and the second vacuum pump are arranged sequentially from top to bottom, connected to the first tank and the second tank respectively via the connecting pipes.

[0013] The beneficial effects of this utility model are:

[0014] This utility model provides a dual-tank helium pressurization furnace that is simple to operate and has higher helium recovery efficiency. By adopting a dual-tank design, the transfer link of the gas collection tank in existing equipment is reduced, thereby improving the efficiency of equipment use and shortening the production cycle.

[0015] Secondly, by adopting a combination of oil-free vacuum pump, dry vacuum pump, booster pump, and buffer tank, the helium recovery efficiency was improved, increasing the recovery rate from 92% of the existing equipment to 99.5%, which greatly reduced the helium cost required for production. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1 A dual-tank helium pressurization furnace includes a first vacuum pump 1, a buffer tank 2, a booster pump 3, a second vacuum pump 4, a first tank 5, a second tank 6, and connecting pipes 7.

[0019] The air inlet of the first vacuum pump 1 is connected to the interior of the first tank 5 and the second tank 6 via connecting pipes 7. A first valve 8 is installed on the connecting pipe 7 between the first vacuum pump 1 and the first tank 5, and a second valve 9 is installed on the connecting pipe 7 between the first vacuum pump 1 and the second tank 6.

[0020] The air inlet of the second vacuum pump 4 is connected to the interior of the first tank 5 and the second tank 6 via connecting pipes 7. A third valve 10 is installed on the connecting pipe 7 between the second vacuum pump 4 and the first tank 5, and a fourth valve 11 is installed on the connecting pipe 7 between the second vacuum pump 4 and the second tank 6.

[0021] The air inlet of the buffer tank 2 is connected to the air outlet of the first vacuum pump 1 via a connecting pipe 7. The air outlet of the buffer tank 2 is connected to the first air inlet of the booster pump 3 via a connecting pipe 7. The second air inlet of the booster pump 3 is connected to an external air source via a connecting pipe 7. A fifth valve 12 is installed on the connecting pipe 7 connected to the second air inlet of the booster pump 3.

[0022] The outlet of the booster pump 3 is connected to the interior of the first tank 5 and the second tank 6 via connecting pipes 7. A sixth valve 13 is installed on the connecting pipe 7 between the booster pump 3 and the first tank 5, and a seventh valve 14 is installed on the connecting pipe 7 between the booster pump 3 and the second tank 6.

[0023] Pressure gauges 15 and air inlet valves 16, which are connected to the interior of the first tank 5 and the second tank 6, are respectively installed on the side walls.

[0024] Furthermore, safety valves 17 that communicate with the interior of the first tank 5 and the second tank 6 are respectively installed on the side walls.

[0025] Preferably, the pressure gauge 15 and the safety valve 17 are respectively located in the middle part of the side wall of the first tank 5 and the second tank 6, and the air inlet valve 16 is respectively located at the bottom of the first tank 5 and the second tank 6;

[0026] Furthermore, the positions where the first vacuum pump 1, the booster pump 3, and the second vacuum pump 4 are connected to the first tank 5 and the second tank 6 respectively via connecting pipes 7 are arranged sequentially from top to bottom.

[0027] Specifically, the first vacuum pump 1 is an oil-free vacuum pump, the second vacuum pump 4 is a dry vacuum pump, the booster pump 3 is a gas compressor, and the first valve 8, the second valve 9, the third valve 10, the fourth valve 11, the fifth valve 12, the sixth valve 13 and the seventh valve 14 are all solenoid valves.

[0028] The working principle of this utility model is as follows: First, the product to be tested is simultaneously loaded into the first tank 5 and the second tank 4. Then, helium is introduced into the first tank 5 through the air inlet valve 16, and the helium pressure is gradually increased. After reaching the approved pressure value, the pressure is maintained for a period of time. Then, the gas inside the first tank 5 is transferred into the second tank, and the pressure is simultaneously increased by the booster pump 3. Wait for the helium inside the first tank 5 to transfer into the second tank 6. Then, the first tank 5 is opened, the product is taken out, and a new product is put in. Then, the gas inside the second tank 6 is transferred into the first tank 5, and the pressure is simultaneously increased by the booster pump 3. Wait for the helium inside the second tank 6 to transfer into the first tank 5. Then, the second tank 6 is opened, the product is taken out, and a new product is put in. The above process is repeated to achieve continuous operation of the testing work. It is not only simple to operate, but also improves the helium recovery efficiency.

[0029] The vacuuming procedures for the first tank 5 and the second tank 6 are as follows:

[0030] The first tank 5 is evacuated: the second vacuum pump 4 is started, the third valve 10 is opened, and when the predetermined value is reached, the third valve 10 is closed and the second vacuum pump 4 is stopped.

[0031] Vacuuming of the second tank 6: The second vacuum pump 4 starts, the fourth valve 11 opens, and when the predetermined value is reached, the fourth valve 11 closes and the second vacuum pump 4 stops.

[0032] The procedure for transferring helium between the first tank 5 and the second tank 6 is as follows:

[0033] The gas inside the first tank 5 is transferred to the second tank 6: the sixth valve 13 and the seventh valve 14 are opened simultaneously (delay adjustable from 20s to 60s). After a period of time, the sixth valve 13 and the seventh valve 14 are closed. Then the first vacuum pump 1, the first valve 8, the seventh valve 14, the fifth valve 12, and the booster pump 3 are also opened simultaneously. When the pressure inside the second tank 6 reaches the set value, the first vacuum pump 1, the first valve 8, the seventh valve 14, and the booster pump 3 are closed simultaneously. The fifth valve 12 is closed after a delay.

[0034] The gas inside the second tank 6 is transferred to the first tank 5: the sixth valve 13 and the seventh valve 14 are opened simultaneously (delay adjustable from 20s to 60s). After a period of time, the sixth valve 13 and the seventh valve 14 are closed. Then the first vacuum pump 1 and the second valve 9, the sixth valve 13, the fifth valve 12, and the booster pump 3 are also opened simultaneously. When the pressure inside the first tank 5 reaches the set value, the first vacuum pump 1 and the second valve 9 are closed, the sixth valve 13 and the booster pump 3 are also closed simultaneously, and the fifth valve 12 is closed after a delay.

[0035] This invention effectively solves the problems existing in the equipment. It improves the production efficiency of the equipment through the dual-tank mode. At the same time, the equipment adopts a combination of oil-free vacuum pump + dry vacuum pump + compressor pump + buffer tank, which greatly improves the helium recovery efficiency, with a recovery rate of up to 99.5%. Helium is expensive, and improving the recovery efficiency can solve the pain point of customers' high production costs.

[0036] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A dual-tank helium pressurization furnace, characterized in that, Includes a first vacuum pump, a buffer tank, a booster pump, a second vacuum pump, a first tank body, a second tank body, and connecting pipes. The air inlet of the first vacuum pump is connected to the interior of the first tank and the second tank via the connecting pipes. A first valve is installed on the connecting pipe between the first vacuum pump and the first tank, and a second valve is installed on the connecting pipe between the first vacuum pump and the second tank. The air inlet of the second vacuum pump is connected to the interior of the first tank and the second tank via the connecting pipes. A third valve is installed on the connecting pipe between the second vacuum pump and the first tank, and a fourth valve is installed on the connecting pipe between the second vacuum pump and the second tank. The air inlet of the buffer tank is connected to the air outlet of the first vacuum pump via the connecting pipe. The air outlet of the buffer tank is connected to the first air inlet of the booster pump via the connecting pipe. The second air inlet of the booster pump is connected to an external air source via the connecting pipe. A fifth valve is installed on the connecting pipe connected to the second air inlet of the booster pump. The air outlet of the booster pump is connected to the interior of the first tank and the second tank via the connecting pipes. A sixth valve is installed on the connecting pipe between the booster pump and the first tank, and a seventh valve is installed on the connecting pipe between the booster pump and the second tank. The first tank and the second tank are respectively equipped with pressure gauges and air inlet valves that communicate with their interiors.

2. The dual-tank helium pressurization furnace according to claim 1, characterized in that: The first tank and the second tank are respectively provided with safety valves that communicate with their interiors.

3. The dual-tank helium pressurization furnace according to claim 2, characterized in that: The pressure gauge and safety valve are respectively located in the middle part of the side wall of the first tank and the second tank, and the air inlet valve is respectively located at the bottom of the first tank and the second tank.

4. The dual-tank helium pressurization furnace according to claim 3, characterized in that: The first vacuum pump, the booster pump, and the second vacuum pump are connected to the first tank and the second tank respectively via the connecting pipes, and are arranged sequentially from top to bottom.

Images