Directly-heated rectification double-diode vacuum electron tube

Abstract

The utility model relates to the technical field of vacuum electron tubes, in particular to a directly-heated rectification double-diode vacuum electron tube, which comprises a base, a mounting groove is arranged at the top of the base, a glass cover is in threaded connection in the mounting groove, and an independent diode module is mounted on the base and positioned in the glass cover. The bottom of the independent diode module is provided with a plurality of pins, the bottom of the inner wall of the mounting groove is provided with a plurality of interfaces, the plurality of pins are respectively inserted into the plurality of interfaces, and the bottom of the base is provided with a plurality of pins. According to the directly-heated rectification double-diode vacuum electron tube, the glass cover is in threaded connection with the interior of the mounting groove, the glass cover is convenient to disassemble and assemble, the independent diode module is fixed to the base through the long bolt, so that a worker can maintain the independent diode module conveniently, the independent diode module can be replaced after being damaged, the base and the glass cover can be reused, and the cost is reduced. And the utilization rate and sustainability of the whole device are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum electron tubes, in particular to a directly heated rectifier dual-diode vacuum electron tube. Background Art

[0002] Direct-heated rectifier dual diode vacuum tubes, commonly known as direct-heated dual diodes, are a widely used electronic device that is mainly used to convert alternating current into direct current. In many applications, such as early radio receivers, high-fidelity audio amplifiers, and some special power supply equipment still in use today, direct-heated rectifier dual diode vacuum tubes still have a place.

[0003] Its working principle is based on thermionic emission, that is, by heating the cathode to release electrons, so that the electrons flow to the anode under the action of the electric field, thereby achieving a rectification effect. The "direct heating" in the direct-heated rectifier refers to the way the cathode is heated, that is, the cathode electrode itself is the heating wire, which is directly heated to emit electrons.

[0004] Traditionally used direct-heated rectifier dual-diode vacuum electron tubes are usually packaged as a whole to ensure their vacuum state and the stability of the internal components. Although this packaging form can ensure the reliability of the electron tube during production and use, it also brings certain limitations. In particular, when one or two of the internal diodes are damaged or the performance degrades, due to the integrity of the package, even if only some of the components fail, the entire direct-heated rectifier dual-diode vacuum electron tube needs to be replaced. This not only increases maintenance costs, but also reduces the utilization and sustainability of the entire device. In view of this, we propose a direct-heated rectifier dual-diode vacuum electron tube. Utility Model Content

[0005] The utility model aims to provide a directly heated rectifier dual-diode vacuum electron tube to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A directly heated rectifier dual-diode vacuum electron tube comprises a base, a mounting groove is provided on the top of the base, a glass cover is threadedly connected in the mounting groove, an independent diode module is installed on the base, the independent diode module comprises basic electron tube components such as a cathode, an anode and a control grid, the cathode adopts a direct heating design to ensure efficient electron emission, and is a main functional component in the directly heated rectifier dual-diode vacuum electron tube, which is a prior art and will not be described in detail here, the independent diode module is located in the glass cover, a plurality of pins are provided at the bottom of the independent diode module, the plurality of pins are equivalent to a plurality of connecting pins at the bottom of the whole of the traditional directly heated rectifier dual-diode vacuum electron tube, a plurality of interfaces are provided at the bottom of the inner wall of the mounting groove, a plurality of the pins are respectively plugged into the plurality of interfaces, a plurality of pins are provided at the bottom of the base, the plurality of the pins are respectively electrically connected to the plurality of interfaces, the pins are connected to the device, thereby connecting the independent diode module and the device;

[0008] The bottom of the inner wall of the installation groove and near the left end is provided with an L-shaped vacuum channel, the left end of the outer wall of the base is provided with a negative pressure connecting port connected to the L-shaped vacuum channel, the left end of the outer wall of the base is provided with a circular sealing groove near the top of the negative pressure connecting port, the circular sealing groove is connected to the L-shaped vacuum channel, and the right end of the inner wall of the circular sealing groove is provided with a first threaded groove, the first threaded groove is threadedly connected with a short bolt, the screw rod of the short bolt is sleeved with a rubber sleeve, and the rubber sleeve is located in the circular sealing groove. When the independent diode module is plugged into the base and the glass cover is installed with the base, the vacuum pump and the negative pressure connecting port are connected through a conduit, and the air in the glass cover is extracted by the vacuum pump to achieve a vacuum environment. When the vacuum operation is completed, the staff tightens the short bolt so that the short bolt drives the rubber sleeve to move into the circular sealing groove. Under the action of the rubber sleeve, the L-shaped vacuum channel is closed, and then the staff removes the conduit from the negative pressure connecting port.

[0009] Preferably, a second annular groove is provided at the outer edge of the bottom of the inner wall of the mounting groove, a second annular rubber pad is provided in the second annular groove, and the bottom of the glass cover is tightly fitted with the top of the second annular rubber pad to ensure the sealing of the connection between the glass cover and the base.

[0010] Preferably, a circular positioning groove is provided in the middle of the bottom of the inner wall of the installation groove, and a circular positioning block is provided in the middle of the bottom of the independent diode module, and the circular positioning block is inserted into the circular positioning groove.

[0011] Preferably, a circular channel connected to the circular positioning groove is formed at the front end of the outer wall of the base, a long bolt is connected to the circular channel, and a second threaded groove is formed on the outer wall of the circular positioning block. The threaded end of the long bolt passes through the circular channel and is threadedly connected to the second threaded groove. Under the action of the long bolt, the circular positioning block is fixed in the circular positioning groove, thereby fixing the position of the independent diode module and the base, preventing the independent diode module from being separated from the base during use.

[0012] Preferably, a first annular groove is provided at the top of the inner wall of the circular positioning groove, a first annular rubber pad is provided in the first annular groove, and the bottom of the independent diode module is tightly fitted with the top of the first annular rubber pad to ensure the sealing of the connection between the circular positioning block and the circular positioning groove, and prevent outside air from entering the glass cover through the circular channel and the circular positioning groove.

[0013] Preferably, a rubber plug is inserted into the negative pressure connection port to seal the negative pressure connection port when it is not in use, thereby preventing dust from entering the negative pressure connection port.

[0014] Preferably, the diameter of the circular sealing groove is larger than the diameter of the L-shaped vacuum channel, and the length of the rubber sleeve is larger than the length of the circular sealing groove, so that a part of the rubber sleeve is exposed to the outside, so that the staff can pull out the rubber sleeve to avoid affecting the vacuum operation. The outer wall of the rubber sleeve fits tightly with the inner wall of the circular sealing groove. After the vacuum operation is completed, it can be ensured that the rubber sleeve completely closes the L-shaped vacuum channel.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The directly heated rectifier dual diode vacuum tube has a circular positioning groove in the middle of the bottom of the inner wall of the installation groove, and a circular positioning block is provided in the middle of the bottom of the independent diode module. The circular positioning block is inserted into the circular positioning groove, and the circular positioning block is fixed in the circular positioning groove by a long bolt, so that the position of the independent diode module and the base is fixed, and the independent diode module is prevented from being separated from the base when in use.

[0017] 2. The glass cover of the direct-heated rectifier dual-diode vacuum electron tube is threadedly connected in the installation groove, which is convenient for the disassembly and assembly of the glass cover, so that it is convenient for the staff to repair the independent diode module. When the independent diode module is damaged, it can be replaced, and the base and the glass cover can be reused, thereby improving the utilization rate and sustainability of the entire device.

[0018] 3. For the directly heated rectifier dual diode vacuum tube, after the independent diode module is plugged into the base and the glass cover is installed with the base, the vacuum pump and the negative pressure connection port are connected through a conduit, and the air in the glass cover is pumped out by the vacuum pump to achieve a vacuum environment. When the vacuum operation is completed, the staff tightens the short bolt so that the short bolt drives the rubber sleeve to move into the circular sealing groove. Under the action of the rubber sleeve, the L-shaped vacuum channel is closed, and then the staff removes the conduit from the negative pressure connection port.

[0019] 4. For the directly heated rectifier dual diode vacuum tube, the bottom of the glass cover is tightly fitted with the top of the second annular rubber pad to ensure the sealing of the connection between the glass cover and the base, and the bottom of the independent diode module is tightly fitted with the top of the first annular rubber pad to ensure the sealing of the connection between the circular positioning block and the circular positioning groove to prevent outside air from entering the glass cover from the circular channel and the circular positioning groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the overall exploded structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of an independent diode module in the utility model;

[0023] Figure 4 It is a partial structural schematic diagram of the utility model;

[0024] Figure 5 It is a schematic diagram of the cross-sectional structure of the base in the utility model.

[0025] In the figure: 1. base; 10. mounting groove; 11. interface; 12. circular positioning groove; 13. first annular groove; 14. second annular groove; 15. circular channel; 16. L-shaped vacuum channel; 17. circular sealing groove; 18. first threaded groove; 2. glass cover; 3. independent diode module; 30. pin; 31. circular positioning block; 310. second threaded groove; 4. long bolt; 5. pin; 6. negative pressure connection port; 7. rubber plug; 8. short bolt; 9. rubber sleeve; 19. first annular rubber pad; 20. second annular rubber pad. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] See also Figure 1-Figure 5 , the utility model provides a technical solution:

[0029] A directly heated rectifier dual-diode vacuum electron tube comprises a base 1, a mounting groove 10 is provided on the top of the base 1, a glass cover 2 is connected to the mounting groove 10 by threads, an independent diode module 3 is installed on the base 1, the independent diode module 3 comprises basic electron tube components such as a cathode, an anode and a control grid, the cathode adopts a direct heating design to ensure efficient electron emission, and is a main functional component in the directly heated rectifier dual-diode vacuum electron tube, which is a prior art and will not be described in detail here, the independent diode module 3 is located in the glass cover 2, a plurality of pins 30 are provided at the bottom of the independent diode module 3, the plurality of pins 30 are equivalent to the plurality of connecting pins at the bottom of the whole of the traditional directly heated rectifier dual-diode vacuum electron tube, a plurality of interfaces 11 are provided at the bottom of the inner wall of the mounting groove 10, the plurality of pins 30 are respectively plugged into the plurality of interfaces 11, a plurality of pins 5 are provided at the bottom of the base 1, the plurality of pins 5 are respectively electrically connected to the plurality of interfaces 11, the pins 5 are connected to the device, thereby connecting the independent diode module 3 and the device;

[0030] An L-shaped vacuum channel 16 is provided at the bottom of the inner wall of the mounting groove 10 and near the left end. A negative pressure connection port 6 connected to the L-shaped vacuum channel 16 is provided at the left end of the outer wall of the base 1. A circular sealing groove 17 is provided at the left end of the outer wall of the base 1 near the top of the negative pressure connection port 6. The circular sealing groove 17 is connected to the L-shaped vacuum channel 16. A first threaded groove 18 is provided at the right end of the inner wall of the circular sealing groove 17. A short bolt 8 is threadedly connected to the first threaded groove 18. A rubber sleeve 9 is sleeved on the screw rod of the short bolt 8. The rubber sleeve 9 is located in the circular sealing groove 17. When the independent diode module 3 is plugged into the base 1 and the glass cover 2 is installed with the base 1, the vacuum pump and the negative pressure connection port 6 are connected through a conduit, and the air in the glass cover 2 is extracted by the vacuum pump to achieve a vacuum environment. When the vacuum operation is completed, the staff tightens the short bolt 8 so that the short bolt 8 drives the rubber sleeve 9 to move into the circular sealing groove 17. Under the action of the rubber sleeve 9, the L-shaped vacuum channel 16 is closed, and then the staff removes the conduit from the negative pressure connection port 6.

[0031] In this embodiment, a second annular groove 14 is formed at the outer edge of the bottom of the inner wall of the mounting groove 10, and a second annular rubber pad 20 is provided in the second annular groove 14. The bottom of the glass cover 2 fits tightly with the top of the second annular rubber pad 20 to ensure the sealing of the connection between the glass cover 2 and the base 1.

[0032] Specifically, a circular positioning groove 12 is provided in the middle of the bottom of the inner wall of the installation groove 10 , and a circular positioning block 31 is provided in the middle of the bottom of the independent diode module 3 . The circular positioning block 31 is inserted into the circular positioning groove 12 .

[0033] Furthermore, a circular channel 15 connected to the circular positioning groove 12 is provided at the front end of the outer wall of the base 1, and a long bolt 4 is connected to the circular channel 15. A second threaded groove 310 is provided on the outer wall of the circular positioning block 31. The threaded end of the long bolt 4 passes through the circular channel 15 and is threadedly connected to the second threaded groove 310. Under the action of the long bolt 4, the circular positioning block 31 is fixed in the circular positioning groove 12, thereby fixing the position of the independent diode module 3 and the base 1, thereby preventing the independent diode module 3 from being separated from the base 1 during use.

[0034] Furthermore, a first annular groove 13 is provided at the top of the inner wall of the circular positioning groove 12, and a first annular rubber pad 19 is provided in the first annular groove 13. The bottom of the independent diode module 3 is tightly fitted with the top of the first annular rubber pad 19 to ensure the sealing of the connection between the circular positioning block 31 and the circular positioning groove 12, and prevent outside air from entering the glass cover 2 from the circular channel 15 and the circular positioning groove 12.

[0035] Furthermore, a rubber plug 7 is inserted into the negative pressure connection port 6 to seal the negative pressure connection port 6 when it is not in use, thereby preventing dust from entering the negative pressure connection port 6 .

[0036] Furthermore, the diameter of the circular sealing groove 17 is greater than the diameter of the L-shaped vacuum channel 16, and the length of the rubber sleeve 9 is greater than the length of the circular sealing groove 17, so that a portion of the rubber sleeve 9 is exposed to the outside, so that the staff can pull out the rubber sleeve 9 to avoid affecting the vacuum operation. The outer wall of the rubber sleeve 9 fits tightly with the inner wall of the circular sealing groove 17. After the vacuum operation is completed, it can be ensured that the rubber sleeve 9 completely closes the L-shaped vacuum channel 16.

[0037] When the direct-heated rectifier dual-diode vacuum electron tube of this embodiment is in use, the staff inserts the multiple pins 30 of the independent diode module 3 into the multiple interfaces 11 respectively, inserts the circular positioning block 31 into the circular positioning groove 12, and connects the second thread groove 310 with the circular channel 15, then passes the threaded end of the long bolt 4 through the circular channel 15 and is threadedly connected in the second thread groove 310, so that the position of the independent diode module 3 and the base 1 is fixed to prevent the independent diode module 3 from being separated from the base 1 when in use, and then the staff threadably connects the bottom end of the glass cover 2 into the installation groove 10, and then uses a conduit to connect the vacuum pump and the negative pressure connection port 6, and uses the vacuum pump to extract the air in the glass cover 2 to achieve a vacuum environment. When the vacuum operation is completed, the staff The staff tightens the short bolt 8 so that the short bolt 8 drives the rubber sleeve 9 to move into the circular sealing groove 17, and the outer wall of the rubber sleeve 9 fits tightly with the inner wall of the circular sealing groove 17 to close the L-shaped vacuum channel 16. Then the staff removes the catheter from the negative pressure connection port 6 and inserts the rubber plug 7 into the negative pressure connection port 6, thereby completing the assembly of the direct-heated rectifier dual diode vacuum electron tube; when the independent diode module 3 is damaged, the staff first pulls out the rubber plug 7, then removes the short bolt 8, and pulls out the rubber sleeve 9 to allow outside air to enter the glass cover 2, and then removes the glass cover 2. Then, the long bolt 4 is removed to separate the independent diode module 3 from the base 1, and the base 1 and the glass cover 2 can be reused, thereby improving the utilization rate and sustainability of the entire device.

[0038] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A directly heated rectifier dual diode vacuum electron tube, comprising a base (1), characterized in that: The top of the base (1) is provided with a mounting groove (10), the mounting groove (10) is internally threadedly connected to a glass cover (2), an independent diode module (3) is mounted on the base (1), the independent diode module (3) is located inside the glass cover (2), a plurality of pins (30) are provided at the bottom of the independent diode module (3), a plurality of interfaces (11) are provided at the bottom of the inner wall of the mounting groove (10), the plurality of pins (30) are respectively plugged into the plurality of interfaces (11), a plurality of pins (5) are provided at the bottom of the base (1), the plurality of pins (5) are respectively electrically connected to the plurality of interfaces (11), the bottom of the inner wall of the mounting groove (10) is adjacent to the glass cover (2), and the plurality of pins (30) are respectively electrically connected to the plurality of interfaces (11). An L-shaped vacuum channel (16) is provided near the left end, a negative pressure connection port (6) connected to the L-shaped vacuum channel (16) is provided at the left end of the outer wall of the base (1), a circular sealing groove (17) is provided at the left end of the outer wall of the base (1) near the top of the negative pressure connection port (6), the circular sealing groove (17) is connected to the L-shaped vacuum channel (16), a first threaded groove (18) is provided at the right end of the inner wall of the circular sealing groove (17), a short bolt (8) is threadedly connected to the first threaded groove (18), a rubber sleeve (9) is sleeved on the screw rod of the short bolt (8), and the rubber sleeve (9) is located in the circular sealing groove (17).

2. The directly heated rectifier dual diode vacuum electron tube according to claim 1, characterized in that: A second annular groove (14) is provided at the outer edge of the bottom of the inner wall of the installation groove (10), a second annular rubber pad (20) is provided in the second annular groove (14), and the bottom of the glass cover (2) is tightly fitted with the top of the second annular rubber pad (20).

3. The directly heated rectifier dual diode vacuum electron tube according to claim 1, characterized in that: A circular positioning groove (12) is provided in the middle of the bottom of the inner wall of the installation groove (10), and a circular positioning block (31) is provided in the middle of the bottom of the independent diode module (3), and the circular positioning block (31) is inserted into the circular positioning groove (12).

4. The directly heated rectifier dual diode vacuum electron tube according to claim 3, characterized in that: A circular channel (15) communicating with the circular positioning groove (12) is formed at the front end of the outer wall of the base (1), a long bolt (4) is connected in the circular channel (15), a second threaded groove (310) is formed on the outer wall of the circular positioning block (31), and a threaded end of the long bolt (4) passes through the circular channel (15) and is threadedly connected in the second threaded groove (310).

5. The directly heated rectifier dual diode vacuum electron tube according to claim 3, characterized in that: A first annular groove (13) is provided at the top of the inner wall of the circular positioning groove (12), a first annular rubber pad (19) is provided in the first annular groove (13), and the bottom of the independent diode module (3) is tightly fitted with the top of the first annular rubber pad (19).

6. The directly heated rectifier dual diode vacuum electron tube according to claim 1, characterized in that: A rubber plug (7) is inserted into the negative pressure connection port (6).

7. The directly heated rectifier dual diode vacuum electron tube according to claim 1, characterized in that: The diameter of the circular sealing groove (17) is greater than the diameter of the L-shaped vacuum channel (16), the length of the rubber sleeve (9) is greater than the length of the circular sealing groove (17), and the outer wall of the rubber sleeve (9) is tightly fitted to the inner wall of the circular sealing groove (17).

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