阅读说明：本技术 一种小型全自动循环充干燥气体系统及其运行方法 (Small-sized full-automatic circulating drying gas filling system and operation method thereof ) 是由 孙云霞 李斌 苟伟 孙正雄 于 2020-05-27 设计创作，主要内容包括：本发明公开了一种小型全自动循环充干燥气体系统及其运行方法,包括机柜。本发明利用标准型尺寸的机柜中设置小型可自动循环的空气干燥系统,有助于解决传统技术中的进口充气仪器或大型充气设备结构与运行复杂的弊端,不仅实现明显的成本与空间资源节约,且通过一体化的拆装实现检修维护的高度便捷；利用一级三通、二级三通、充气导管、排气导管设置相联结的循环气泵、不锈钢干燥管、加热器、电磁阀与接收机馈源口密闭腔体,通过精准温湿度控制,以解决微波窗口因温差较大导致的结露问题；在连接接收机馈源口密闭腔体的压力传感器导管与排气导管上分别连接压力传感器、手动调节阀与电磁阀、时间继电器,可对湿热气体的排放进行控制。(The invention discloses a small-sized full-automatic circulating air-filling and drying system and an operation method thereof. The small-sized automatic circulating air drying system is arranged in the cabinet with the standard size, so that the defect that an imported inflating instrument or large-sized inflating equipment in the traditional technology is complex in structure and operation is overcome, obvious cost and space resource saving is realized, and high convenience in maintenance is realized through integrated disassembly and assembly; the primary tee joint, the secondary tee joint, the inflation guide pipe and the exhaust guide pipe are provided with a circulating air pump, a stainless steel drying pipe, a heater, an electromagnetic valve and a receiver feed source port closed cavity which are connected, and the problem of condensation of a microwave window caused by large temperature difference is solved through accurate temperature and humidity control; the pressure sensor, the manual regulating valve, the electromagnetic valve and the time relay are respectively connected on the pressure sensor guide pipe and the exhaust guide pipe which are connected with the closed cavity of the receiver feed source port, and the discharge of damp and hot gas can be controlled.)

1. A small-sized full-automatic circulating air-drying system comprises a cabinet (1) and is characterized in that the cabinet (1) is divided into an upper cavity (2) and a lower cavity (3) by a partition plate in the cabinet, a circulating air pump (4), a receiver feed source port closed cavity (5), a pressure sensor (6), a manual regulating valve (7), a time relay (10), a primary tee joint (12) and a secondary tee joint (13) are respectively arranged in the lower cavity (3), and two drying pipes (8), two heaters (9) and two electromagnetic valves (11) are respectively arranged in the upper cavity (2);

the output end of the circulating air pump (4) is connected with two air inflation guide pipes (14) through a one-level tee joint (12), the two air inflation guide pipes (14) are respectively connected with one ends of two drying pipes (8), the two ends of the drying pipes (8) are respectively connected with exhaust guide pipes (15) through two electromagnetic valves (11), the two exhaust guide pipes (15) are respectively connected with two ports of the two-level tee joint (13), the other port of the two-level tee joint (13) is connected with a pressure sensor guide pipe (16) connected with the receiver feed port closed cavity (5), the receiver feed port closed cavity (5) is additionally connected with a recovery hose (17) connected with the input end of the circulating air pump (4), and the electromagnetic valves (11) are respectively connected with a lead (18) through a time relay (10).

2. The small-sized full-automatic circulating air charging and drying system of claim 2, wherein the cabinet (1) is a rectangular cabinet with one side wall capable of being opened and closed, and the upper chamber (2) and the lower chamber (3) are respectively located at the upper end and the lower end of the cabinet (1).

3. The small-sized full-automatic circulating air charging and drying system as claimed in claim 1, wherein the receiver feed port closed cavity (5) is a hollow cylinder structure with a microwave window (51) at the upper end, and the two side walls of the receiver feed port closed cavity (5) are respectively provided with an air inlet (52) and an air outlet (53) which are corresponding to each other.

4. A compact fully automatic circulating air-drying system according to claim 1, characterized in that the pressure sensor (6) and the manual regulating valve (7) are connected to a pressure sensor conduit (16).

5. A compact fully automatic circulating air-filled and drying system as claimed in claim 1, wherein said two heaters (9) are fixedly mounted on said two drying tubes (8), respectively.

6. A compact fully automatic circulating air-drying system according to claim 1, characterized in that two said solenoid valves (11) are located on two exhaust ducts (15) respectively.

7. A method of operating a compact fully automatic circulating air-filled and dried system as claimed in any one of claims 1 to 6, said method comprising the steps of:

step S1, a film is covered on a microwave window (51) of the receiver feed source port closed cavity (5) to form a closed cavity;

step S2, controlling the circulating air pump 4 to be started to pump out the gas in the receiver feed source port closed cavity 5, respectively conveying the gas to the two drying pipes (8) through the primary tee joint (12) and the air inflation guide pipe (14), and setting the temperature of the heater (9) to be 100 ℃ to heat and dry the gas in the drying pipes (8);

step S3, controlling the electromagnetic valve (11) to enable the dried gas to pass through the secondary tee joint (13), and then regulating the pressure entering the closed cavity (5) of the receiver feed source port through controlling the manual regulating valve (7) to keep the pressure at 3-5 mbar;

step S4, controlling the running time of each path to be 1h through a time relay (10);

step S5, after 1h, the way is subjected to gas regeneration, the drying agent in the drying pipe (8) is heated, and then the electromagnetic valve (11) is controlled to change direction to discharge water vapor;

in step S6, another dry gas supply is controlled.

8. The operation method of a compact fully automatic circulating air-drying system according to claim 7, wherein the temperature of the heater (9) is adjusted up to 160 ℃ after the gas regeneration in step S5.

9. The method as claimed in claim 8, wherein the desiccant in step S5 is silica gel desiccant.

Technical Field

The invention relates to the technical field of receiver application in a radio telescope of a VGOS standard station, in particular to a small-sized full-automatic circulating dry gas filling system and an operation method thereof.

Background

The VLBI technology has made a remarkable contribution in the field of celestial body measurement and space geodetic measurement since the last 70 th century and has been the core technology of international celestial sphere reference frame, international earth reference frame and earth orientation parameter measurement. The VGOS station observation network is formed by building stations according to the VLBI2010 standard, and key technologies of the VGOS standard stations mainly comprise: the antenna technology is small and high in mobility, the high-sensitivity ultra-wideband receiver technology, the high-speed digital back-end technology and the multi-station multi-baseline information processing technology. Currently, a VGOS technology verification system is first built in the united states two years ago, a low-speed broadband receiving system is adopted to verify key technical problems in VGOS technology development, and data with a time delay measurement accuracy better than 4ps is obtained. The ultra-wideband receiver technology is mainly represented by the United states, Sweden and Germany, and the technical breakthroughs are in the development of microwave integrated low-noise amplifier chips for low-temperature application, the development of high-vacuum low-temperature Dewar, the development of high-reliability low-power-consumption refrigeration systems and the like. In the aspect of observation technology, the observation height angle is mainly reduced, so that the distribution of the radio power supply on the observation station is more symmetrical, the number of observation sources is increased, and the rotating speed of the antenna is increased to increase the effective observation time.

A radio telescope is a telescope that relies on receiving radiation in the celestial radio band. The receiver is an important component of the radio telescope, and the performance of the receiver has great influence on the whole radio telescope. The interior of the receiver Dewar is a high vacuum low temperature environment, and the internal temperature can be as low as 70 k. In the prior art, a gas filling system for keeping a microwave window of a refrigeration receiver dry is proposed by patent application No. CN201310443418.5, which is used in radio astronomy to keep a gas filling system for keeping a microwave window of a refrigeration receiver in a 1.3 cm wave band dry. The inflation system consists of an inflator, a gas buffer, a pressure sensor, a monitoring gauge outfit, a tee joint, a hand valve, an electromagnetic valve, an inflation conduit, an air supply conduit, an exhaust conduit, a pressure sensor conduit, a Dewar cavity, a dry air cavity, a sealing ring, a microwave window sealing film, a microwave window fastening ring, a dry air cavity sealing film and a dry air cavity fastening ring. However, the system mechanism of the technical scheme adopts a large number of parts, and mostly adopts imported equipment, the equipment cost is high, the overall size of the assembled system is large, and the assembled system has to occupy a large space in the remote equipment, so that the overall burden of the remote equipment is increased, and meanwhile, the disassembly and assembly difficulty of the air drying system is also realized.

Disclosure of Invention

The invention aims to solve the problems that a microwave window of a receiver in a VGOS standard station radio telescope in the prior art is easy to dewfall and the water vapor is difficult to clear, and provides a small-sized full-automatic circulating air-drying system and an operation method thereof.

In order to achieve the purpose, the invention adopts the following technical scheme:

a small-sized full-automatic circulating drying gas charging system comprises a cabinet, wherein the cabinet is divided into an upper cavity and a lower cavity by a partition plate in the cabinet, a circulating air pump, a receiver feed source port closed cavity, a pressure sensor, a manual regulating valve, a time relay, a primary tee joint and a secondary tee joint are respectively arranged in the lower cavity, and two drying tubes, two heaters and two electromagnetic valves are respectively arranged in the upper cavity;

the output end of the circulating air pump is connected with two inflation guide pipes through a primary tee joint, the two inflation guide pipes are respectively connected with one ends of two drying pipes, the other ends of the drying pipes are respectively connected with exhaust guide pipes through two electromagnetic valves, the two exhaust guide pipes are respectively connected with two ports of a secondary tee joint, the other port of the secondary tee joint is connected with a pressure sensor guide pipe connected with a receiver feed source port closed cavity, the receiver feed source port closed cavity is additionally connected with a recovery hose connected with the input end of the circulating air pump, and the electromagnetic valves are respectively connected with a lead wire through a time relay.

Preferably, the cabinet is a rectangular cabinet body with one side wall capable of being opened and closed, and the upper cavity and the lower cavity are respectively located at the upper end and the lower end of the cabinet.

Preferably, the receiver feed source port closed cavity is a hollow cylinder structure with a microwave window at the upper end, and the two side walls of the receiver feed source port closed cavity are respectively provided with an air inlet and an air outlet which correspond to each other.

Preferably, the pressure sensor and the manual regulating valve are both connected with the pressure sensor conduit.

Preferably, the two heaters are respectively and fixedly sleeved on the two drying pipes.

Preferably, two of the solenoid valves are located on two exhaust conduits respectively.

An operation method of a small-sized full-automatic circulating air-drying system comprises the following steps:

step S1, covering a film on a microwave window of the closed cavity of the receiver feed source port to form a closed cavity;

step S2, controlling a circulating air pump to be started to pump out air in the closed cavity of the receiver feed source port, respectively conveying the air to two drying pipes through a primary tee joint and an air inflation conduit, and setting the temperature of a heater to be 100 ℃ to heat and dry the air in the drying pipes;

step S3, controlling the electromagnetic valve to enable the dried gas to pass through the secondary tee joint, and then regulating the pressure entering the closed cavity of the receiver feed source port through controlling the manual regulating valve to keep the pressure at 3-5 mbar;

step S4, controlling the running time of each path to be 1h through a time relay;

step S5, after 1h, the way is subjected to gas regeneration, the drying agent in the drying tube is heated, and then the electromagnetic valve is controlled to change the direction to discharge water vapor;

in step S6, another dry gas supply is controlled.

Preferably, the heater temperature is adjusted up to 160 ℃ after the gas is regenerated in the step S5.

Preferably, the desiccant in step S5 is a silica gel desiccant.

Compared with the prior art, the invention has the following advantages:

1. the small-sized air drying system capable of automatically circulating is arranged in the cabinet with the standard size, so that the defect that an inlet inflating instrument or large-sized inflating equipment in the traditional technology is complex in structure and operation is overcome, obvious cost and space resource saving is realized, and the obvious advantage of low manufacturing cost is achieved; meanwhile, an air drying system is integrally arranged in the cabinet, so that the purposes of facilitating disassembly and assembly and overhauling and maintenance are achieved.

2. In the invention, a circulating air pump, a stainless steel drying pipe, a heater, an electromagnetic valve and a receiver feed source port closed cavity which are connected are arranged in a cabinet by utilizing a primary tee joint, a secondary tee joint, an inflation guide pipe and an exhaust guide pipe, so that one side of the cabinet is used for inflating air of the receiver feed source port closed cavity to carry out data accurate temperature and humidity control on the air, thereby solving the problem of condensation of a microwave window caused by large temperature difference.

3. The invention sets corresponding air inlet and outlet on two sides of the receiver feed source port closed cavity with hollow column structure, and connects two circulating air pumps and two drying tubes by using the air inlet and outlet, and connects electromagnetic valve, time relay, pressure sensor and manual regulating valve on the exhaust duct and pressure sensor duct, so as to control the discharge of damp and hot gas.

In conclusion, the small-sized automatic circulating air drying system is arranged in the cabinet with the standard size, so that the defect that an imported inflating instrument or large-sized inflating equipment in the traditional technology is complex in structure and operation is overcome, obvious cost and space resource saving is realized, and high convenience in overhauling and maintenance is realized through integrated disassembly and assembly; the primary tee joint, the secondary tee joint, the inflation guide pipe and the exhaust guide pipe are provided with a circulating air pump, a stainless steel drying pipe, a heater, an electromagnetic valve and a receiver feed source port closed cavity which are connected, and the problem of condensation of a microwave window caused by large temperature difference is solved through accurate temperature and humidity control; a pressure sensor, a manual regulating valve, an electromagnetic valve and a time relay are respectively connected to a pressure sensor guide pipe and an exhaust guide pipe which are connected with a closed cavity of a receiver feed source port, and efficient discharge control of damp and hot gas can be realized.

Drawings

FIG. 1 is a schematic structural diagram of a small-sized fully-automatic circulating air-drying system and an operation method thereof according to the present invention;

FIG. 2 is a schematic structural diagram of a small-sized fully-automatic circulating air-drying system according to the present invention;

FIG. 3 is a schematic diagram of a drying tube and a heater of a small-sized fully automatic circulating air-drying system according to the present invention;

fig. 4 is a schematic structural view of a receiver feed port closed cavity of a small-sized full-automatic circulating air-drying system according to the present invention.

In the figure: 1 cabinet, 2 upper chambers, 3 lower chambers, 4 circulating air pumps, 5 receiver feed source port closed chambers, 51 microwave windows, 52 air inlets, 53 air outlets, 6 pressure sensors, 7 manual regulating valves, 8 drying pipes, 9 heaters, 10 time relays, 11 electromagnetic valves, 12 primary tee joints, 13 secondary tee joints, 14 inflation conduits, 15 exhaust conduits, 16 pressure sensor conduits, 17 recovery hoses and 18 leads.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-4, a small-sized full-automatic circulating air-drying system and an operation method thereof, comprising a cabinet 1, wherein the cabinet 1 is divided into an upper chamber 2 and a lower chamber 3 by a partition plate in the interior of the cabinet, the lower chamber 3 is respectively provided with a circulating air pump 4, a receiver feed source port closed chamber 5, a pressure sensor 6, a manual regulating valve 7, a time relay 10, a primary tee 12 and a secondary tee 13, and the upper chamber 2 is respectively provided with two drying tubes 8, two heaters 9 and two electromagnetic valves 11;

the circulating air pump 4 adopts a micro vacuum pump device with the product type number of CO9Ld of Hailin brand, and the pressure sensor 6 can be a micro instrument with the product type number of HM 91.

The manual regulating valve 7 is TJ40H-C, and the time relay 10 can adopt an electric control device of Schneider brand electric REXL miniature pluggable product model REXL2TMB 7.

The drying tube 8 is made of 304 stainless steel, the heater 9 is sleeved with an electrified heat-conducting metal wire, and the electromagnetic valve 11 can be molded coil type valve equipment under the brand of Gems.

The output end of the circulating air pump 4 is connected with two air inflation guide pipes 14 through a one-level tee joint 12, the two air inflation guide pipes 14 are respectively connected with one ends of two drying pipes 8, the other ends of the two drying pipes 8 are respectively connected with an air exhaust guide pipe 15 through two electromagnetic valves 11, the two air exhaust guide pipes 15 are respectively connected with two ports of a second-level tee joint 13, the other port of the second-level tee joint 13 is connected with a pressure sensor guide pipe 16 connected with the receiver feed source port closed cavity 5, the receiver feed source port closed cavity 5 is additionally connected with a recovery hose 17 connected with the input end of the circulating air pump 4, and the two electromagnetic valves 11 are respectively connected.

It should be noted that:

firstly, flange parts are fixedly sleeved at two ends of an inflation conduit 14, an exhaust conduit 15, a pressure sensor conduit 16 and a recovery conduit 17 so as to ensure that the conduits can be conveniently disassembled and assembled;

secondly, with particular reference to the description of fig. 1, two electromagnetic relays 11 are connected in parallel to the time relay 10 by two conductors 18.

Referring to the accompanying drawing 2, the cabinet 1 is a rectangular cabinet body with one side wall capable of being opened and closed, the upper cavity 2 and the lower cavity 3 are respectively located at the upper end and the lower end of the cabinet 1, the cabinet 1 adopts a 19-inch standard metal material unit box, the height is 88mm, and the system is integrally arranged in a small cabinet body, so that the miniaturization of an automatic circulating air-drying system is facilitated.

The receiver feed source port closed cavity 5 is a hollow cylinder structure with a microwave window 51 at the upper end, and the two side walls of the receiver feed source port closed cavity 5 are respectively provided with an air inlet 52 and an air outlet 53 which are corresponding to each other. It should be noted that the receiver feed port closed cavity 5 is made of 304 stainless steel to ensure the cleanness of the gas.

Referring specifically to fig. 4, it should be noted that:

firstly, a microwave window 51 at the upper end of a receiver feed source port closed cavity 5 is covered with a layer of film to form a closed cavity;

secondly, the air inlet 52 is connected with one end of the pressure sensor conduit 16 far away from the secondary tee 13, water vapor is recycled into the receiver feed source port closed cavity 5 through the pressure sensor conduit 16, the air outlet 53 is connected with one end of the recycling hose 17 far away from the circulating air pump 4, and air in the receiver feed source port closed cavity 5 can be recycled through the recycling hose 17 and the circulating air pump 4.

The pressure sensor 6 and the manual regulating valve 7 are both connected with the pressure sensor guide pipe 16, the pressure sensor 6 can be used for monitoring the pressure of gas entering the receiver feed source port closed cavity 5 through the pressure sensor guide pipe 16, the pressure of the gas entering the receiver feed source port closed cavity 5 is regulated and controlled through the manual regulating valve 7, and the pressure sensor 6 is matched with the pressure sensor 6 to ensure the stability of the receiver feed source port closed cavity 5.

The two heaters 9 are respectively fixedly sleeved on the two drying tubes 8, and the heaters 9 which generate heat by electrifying can conduct heat to the drying tubes 8 so as to heat and dry the gas in the drying tubes 8.

The two electromagnetic valves 11 are respectively positioned on the two exhaust guide pipes 15, and the two electromagnetic valves 11 which are arranged in parallel can independently control the opening and the closing of the two drying pipes 8 under the monitoring control of the time relay 10.

The method comprises the following steps:

step S1, referring to fig. 4 for details, a film is covered on the microwave window 51 of the receiver feed port closed cavity 5 to form a closed cavity;

step S2, controlling the circulating air pump 4 to be started to pump out the gas in the receiver feed source port closed cavity 5, respectively conveying the gas to the two drying pipes 8 through the primary tee joint 12 and the inflation conduit 14, and setting the temperature of the heater 9 to be 100 ℃ to heat and dry the gas in the drying pipes 8, so that the gas in the drying pipes 8 reaches the standard of discharge and recovery;

step S3, controlling the electromagnetic valve 11 to enable dried gas to pass through the secondary tee 13, and then regulating the pressure entering the receiver feed source port closed cavity 5 through the manual control regulating valve 7 to enable the pressure to be kept at 3-5mbar, wherein when the pressure is 4mbar, the inside of the receiver feed source port closed cavity 5 is most stable;

step S4, controlling the running time of each path to be 1h through the time relay 10;

step S5, after 1h, regenerating gas in the drying tube 8, heating the drying agent in the drying tube, and controlling the electromagnetic valve 11 to reverse to discharge water vapor, so that the gas in the drying tube 8 is transmitted to the receiver feed source port closed cavity 5 through the secondary tee joint 13 and the pressure sensor conduit 16;

in step S6, another dry gas supply is controlled.

After the gas is regenerated in step S5, the temperature of the heater 9 is raised to 160 ℃.

The desiccant in step S5 is a silica gel desiccant.

It is worth noting that: the gas in the drying tube 8 is dried by heating to reduce the temperature difference, so as to reduce the possibility of causing condensation; and the system is beneficial to efficient cleaning treatment by recycling and treating water vapor.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.