High-vacuum overlapped condenser

Abstract

The invention discloses a high-vacuum overlapped condenser. The high-vacuum overlapped condenser comprises a first condenser and a second condenser which are horizontally arranged, the second condenser is arranged right above the first condenser; the first condenser comprises a first shell; the second condenser comprises a second shell; a first gas-phase outlet and a second gas-phase outlet are formed in the upper part of the first shell, a first gas-phase inlet and a second gas-phase inlet are formed in the lower part of the second shell, the first gas-phase outlet is hermetically connected with the first gas-phase inlet, and the second gas-phase outlet is hermetically connected with the second gas-phase inlet; the middle of the first shell is a shell expansion section, and the inner diameter of the shell expansion section is larger than the inner diameters of the two side portions of the first shell. A total gas phase inlet is formed in the side part of the shell expansion section; a liquid accumulation bag is arranged below the expanded section of the shell, and a condensate outlet is formed in the lower part of the liquid accumulation bag; according to the high-vacuum overlapped condenser, the flow direction turning number of the condenser can be reduced, and the gas flow speed in the condenser can be reduced, so that the pressure drop is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchangers, and particularly to a high-vacuum overlapping condenser. Background Art

[0002] Condensers are usually classified into types such as shell-and-tube, air-cooled, spiral plate, and plate-fin. Among them, shell-and-tube condensers are the most common and are widely used in various industrial production processes. The "Standard for Shell-and-Tube Heat Exchangers" classifies shell-and-tube condensers into many types according to the shape of the shell. Among them, the E-type shell-and-tube condenser has the widest scope of application, and the J-type or H-type condensers have higher applicability in high-vacuum systems.

[0003] In the actual application of condensers, when one condenser cannot meet the condensation effect or different temperature-level cold stream condensates are required, two condensers can be arranged in series. Summary of the Invention

[0004] In order to enrich the product types of condensers for high-vacuum systems and increase the selection space for gas condensation methods under high-vacuum conditions, the present invention proposes a high-vacuum overlapping condenser.

[0005] An embodiment of the present invention provides a high-vacuum overlapping condenser, including a horizontally placed first condenser and a second condenser;

[0006] The second condenser is arranged directly above the first condenser;

[0007] The first condenser includes a first shell;

[0008] The second condenser includes a second shell;

[0009] A first gas phase outlet and a second gas phase outlet are arranged at the upper part of the first shell, a first gas phase inlet and a second gas phase inlet are arranged at the lower part of the second shell, the first gas phase outlet is hermetically connected to the first gas phase inlet, and the second gas phase outlet is hermetically connected to the second gas phase inlet;

[0010] The middle part of the first shell is a shell expansion section, and the inner diameter of the shell expansion section is larger than the inner diameters of both side parts of the first shell; a total gas phase inlet is arranged at the side part of the shell expansion section;

[0011] A liquid accumulation package is arranged below the shell expansion section, and a condensate outlet is arranged at the lower part of the liquid accumulation package.

[0012] In one or some alternative embodiments, the first condenser further includes first heat exchange tubes arranged in the first shell, and the space between the first shell and the first heat exchange tubes is the first shell side;

[0013] A first horizontal baffle is disposed in the middle inside the first housing, and the first horizontal baffle divides the first shell pass into a first region and a second region;

[0014] The first horizontal baffle is located on the central axis of the total gas phase inlet.

[0015] In one or some alternative embodiments, the first condenser further includes first heads fixed to both sides of the first housing;

[0016] The first heads are provided with a first tube pass inlet and a first tube pass outlet;

[0017] The first tube pass inlet and the first tube pass outlet are respectively communicated with the first heat exchange tubes.

[0018] In one or some alternative embodiments, the first condenser further includes first baffle rods disposed in the first housing;

[0019] The first baffle rods are used to support the first heat exchange tubes and change the flow direction of the fluid in the first shell pass.

[0020] In one or some alternative embodiments, the second condenser includes second heat exchange tubes disposed in the second housing, and a second shell pass is formed between the second housing and the second heat exchange tubes;

[0021] A second horizontal baffle is disposed in the middle inside the second housing, and the second horizontal baffle divides the second shell pass into a third region and a fourth region.

[0022] In one or some alternative embodiments, the second condenser further includes second heads fixed to both sides of the second housing;

[0023] The second heads are provided with a second tube pass inlet and a second tube pass outlet;

[0024] The second tube pass inlet and the second tube pass outlet are respectively communicated with the second heat exchange tubes.

[0025] In one or some alternative embodiments, the second condenser further includes second baffle rods disposed in the second housing;

[0026] The second baffle rods are used to support the second heat exchange tubes and change the flow direction of the fluid in the second shell pass.

[0027] In one or some alternative embodiments, the second condenser further includes a non-condensable gas outlet;

[0028] The non-condensable gas outlet is disposed at the upper part in the middle of the second housing;

[0029] The second horizontal baffle is located on the central axis of the non-condensable gas outlet.

[0030] In one or some alternative embodiments, the inner diameters of both side portions of the first housing are greater than the inner diameter of the second housing.

[0031] In one or some alternative embodiments, the high-vacuum overlapping condenser further includes support columns;

[0032] The support columns are respectively fixedly connected to the first condenser and the second condenser, and are used to support the first condenser and the second condenser.

[0033] The beneficial effects of the above technical solutions provided in the embodiments of the present invention at least include:

[0034] In the high-vacuum overlapping condenser provided in the embodiments of the present invention, the enlarged section of the housing of the first condenser can be provided with a total gas-phase inlet with a larger diameter while keeping the diameter of the condenser main body unchanged, so as to reduce the gas flow rate at the total gas-phase inlet. Moreover, compared with multiple gas-phase inlets, setting a single gas-phase inlet with a larger diameter can reduce the number of flow direction turns at the distribution between the gas-phase main pipe and the total gas-phase inlet; by directly connecting the two gas-phase inlets of the second condenser and the two gas-phase outlets of the first condenser vertically and directly, the number of flow direction turning points between the first condenser and the second condenser can be reduced, thereby greatly reducing the pressure drop. And by providing a sufficiently large liquid accumulation pocket at the lower part of the enlarged section of the first housing, timely collection of condensate can be realized, ensuring sufficient gas-phase heat exchange area inside the first housing and the second housing, improving the condensation efficiency, and enabling the high-vacuum overlapping condenser to be better applicable to a high-vacuum system.

[0035] Other features and advantages of the present invention will be described in subsequent specifications, and part of them will become obvious from the specifications or will be understood by implementing the present invention. The objectives and other advantages of the present invention can be achieved and obtained by the structures specifically pointed out in the written specifications and the drawings.

[0036] The technical solutions of the present invention will be further described in detail below through the drawings and embodiments. Description of the Drawings

[0037] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention; in the drawings:

[0038] Figure 1 It is a schematic structural diagram of the high-vacuum overlapping condenser provided in the embodiments of the present invention;

[0039] In the figure:

[0040] 1 is the first condenser, 11 is the first housing, 111 is the first region, 112 is the second region, 113 is the housing expansion section, 12 is the first gas-phase outlet, 13 is the second gas-phase outlet, 14 is the total gas-phase inlet, 15 is the liquid accumulation pocket, 16 is the condensate outlet, 17 is the first horizontal baffle, 18 is the first head, 181 is the first tube-side inlet, 182 is the first tube-side outlet, 19 is the first flange;

[0041] 2 is the second condenser, 21 is the second housing, 211 is the third region, 212 is the fourth region, 22 is the first gas-phase inlet, 23 is the second gas-phase inlet, 24 is the non-condensable gas outlet, 25 is the second head, 251 is the second tube-side inlet, 252 is the second tube-side outlet, 26 is the second flange, 27 is the second horizontal baffle; 3 is the support column. Detailed implementation manners

[0042] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be fully conveyed to those skilled in the art.

[0043] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "far", "near", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0044] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] The inventor found that when the gas-phase fluid passes through the condenser, a pressure drop will occur. An excessive pressure drop cannot meet the pressure requirements of a high-vacuum system. The pressure drop mainly occurs at the flow turning points inside the condenser, and the greater the gas-phase flow rate, the greater the pressure drop generated. Therefore, reducing the number of gas flow turning points and lowering the gas-phase flow rate are the keys to reducing the pressure drop of the condenser. For existing high-vacuum condensers, the effect of reducing the pressure drop is not ideal enough, and the technical solutions still have certain limitations. For example:

[0046] In an existing high-vacuum series condenser system, straight pipes are arranged between the condensers and baffles are installed in the condensers at a predetermined angle to reduce the pressure drop of the fluid in the condensers. Although this method can reduce the pressure drop of the condenser, the setting of multiple shell-side gas inlets increases the resistance at the inlet pipeline distribution, and the horizontal parallel arrangement of the two condensers will increase the floor area.

[0047] In an existing vacuum condenser, through the application of a solid impact-proof rod, both the gas inflow rate is increased and the top tube bundle is protected from the impact of pressurized gas; through long baffles, sealing plates, tube layout design and anti-short-circuit baffles, the condensable gas is condensed with the highest efficiency; a special support plate structure achieves high heat transfer efficiency and low flow resistance loss. However, a single condenser cannot meet the condensation of cold stream fluids with different temperature levels, and can only rely on expanding the volume of the condenser to meet the condensation effect.

[0048] Based on this, the embodiments of the present invention provide a high-vacuum overlapping condenser, which will be described in detail through specific embodiments below.

[0049] Embodiment 1

[0050] The embodiments of the present invention provide a high-vacuum overlapping condenser. Referring to Figure 1 as shown, it includes a horizontally placed first condenser 1 and a second condenser 2;

[0051] The second condenser 2 is arranged directly above the first condenser 1;

[0052] The first condenser 1 includes a first housing 11;

[0053] The second condenser 2 includes a second housing 21;

[0054] A first gas-phase outlet 12 and a second gas-phase outlet 13 are provided at the upper part of the first housing 11, a first gas-phase inlet 22 and a second gas-phase inlet 23 are provided at the lower part of the second housing 21, the first gas-phase outlet 12 is sealingly connected to the first gas-phase inlet 22, and the second gas-phase outlet 13 is sealingly connected to the second gas-phase inlet 23;

[0055] The middle part of the first housing 11 is a housing expansion section 113, and the inner diameter of the housing expansion section 113 is larger than that of the two side parts of the first housing 11; a total gas phase inlet 14 is arranged on the side of the housing expansion section 113;

[0056] A liquid accumulation package 15 is arranged below the housing expansion section 113, and a condensate outlet 16 is arranged at the lower part of the liquid accumulation package 15.

[0057] In the embodiment of the present invention, referring to Figure 1 as shown, the first gas phase outlet 12 and the second gas phase outlet 13 are arranged vertically upward, the first gas phase inlet 22 and the second gas phase inlet 23 are arranged vertically downward, and moreover, the first gas phase outlet 12 is directly connected to the first gas phase inlet 22, and the second gas phase outlet 13 is directly connected to the second gas phase inlet 23, reducing the number of flow turning points between the first condenser 1 and the second condenser 2, reducing the pressure drop generated during the process of the gas flowing from the first condenser 1 to the second condenser 2, and ensuring the condensation effect.

[0058] In the embodiment of the present invention, referring to Figure 1 as shown, the total gas phase inlet 14 is arranged on the side of the housing expansion section 113. Therefore, a total gas phase inlet 14 with a larger diameter can be set, so that the flow velocity of the gas to be condensed decreases when entering the total gas phase inlet 14. Moreover, compared with setting multiple gas phase inlets, setting a single gas phase inlet with a larger diameter can reduce the number of flow turning points at the distribution point between the gas phase main pipe and the total gas phase inlet 14, thereby greatly reducing the pressure drop.

[0059] In the embodiment of the present invention, since the second condenser 2 and the first condenser 1 are arranged up and down, and the liquid accumulation package 15 is arranged at the lower part of the housing expansion section 113, and the lowest point of the housing expansion section 113 is lower than the lowest points of the two side parts of the first housing 11, the condensate generated in the first condenser 1 and the second condenser 2 can flow smoothly to the liquid accumulation package 15, thereby realizing the timely collection of the condensate, enabling the condenser to always have a larger gas phase heat exchange area, and improving the condensation efficiency.

[0060] In a specific embodiment, the first condenser 1 further includes a first heat exchange tube (not shown in the figure) arranged in the first housing 11. The space between the first housing 11 and the first heat exchange tube is the first shell side. After the gas is introduced into the first housing 11 from the total gas phase inlet 14, it flows and exchanges heat in the first shell side. Referring to Figure 1As shown, a first transverse baffle 17 is disposed in the middle inside the first housing 11. The first transverse baffle 17 is located on the central axis of the total gas phase inlet 14 and coincides with the cross-section in the exact middle of the first housing 11, such that the first transverse baffle 17 divides the first shell pass into a first region 111 and a second region 112. Among them, the first region 111 communicates with the first gas phase outlet 12, and the second region 112 communicates with the second gas phase outlet 13. After the gas is introduced into the first housing 11 from the total gas phase inlet 14, it is separated into two streams by the first transverse baffle 17 and flows to the first region 111 and the second region 112 respectively, and enters the second condenser 2 through the first gas phase outlet 12 and the second gas phase outlet 13 respectively.

[0061] In a specific embodiment, the second condenser 2 further includes second heat exchange tubes (not shown in the figure) disposed inside the second housing 21. The space between the second housing 21 and the second heat exchange tubes is the second shell pass. The gas heat-exchanged in the first condenser 1 flows out through the first gas phase outlet 12 and enters the second housing 21 from the first gas phase inlet 22 for further heat exchange, and also flows out through the second gas phase outlet 13 and enters the second housing 21 from the second gas phase inlet 23 for further heat exchange. Refer to Figure 1 As shown, an inert gas outlet 24 is disposed in the middle of the upper part of the second housing 21. After the gas flows through the second shell pass for heat exchange, inert gas is obtained and discharged from the inert gas outlet 24.

[0062] In a specific embodiment, refer to Figure 1 As shown, a second transverse baffle 27 is disposed in the middle inside the second housing 21. The second transverse baffle 27 is located on the central axis of the inert gas outlet 24 and coincides with the cross-section in the exact middle of the second housing 21, such that the second transverse baffle 27 divides the second shell pass into a third region 211 and a fourth region 212. Among them, the third region 211 communicates with the first gas phase inlet 22, and the fourth region 212 communicates with the second gas phase inlet 23. The gas heat-exchanged and flowing in the first condenser 1 enters the third region 211 for heat exchange from the first gas phase inlet 22, and enters the fourth region 212 for heat exchange from the second gas phase inlet 23, and then is discharged together from the inert gas outlet 24.

[0063] In the embodiment of the present invention, the first shell pass is separated by the first transverse baffle 17, and the second shell pass is separated by the second transverse baffle 27, so that the gas is evenly divided into two streams. One stream exchanges heat through the first region 111 and the third region 211, and the other stream exchanges heat through the second region 112 and the fourth region 212, thereby controlling the flow rate of each stream within a smaller range to reduce the flow velocity, and further greatly reducing the generation of pressure drop to ensure the condensation effect.

[0064] In a specific embodiment, refer to Figure 1As shown, the first condenser 1 further includes first heads 18 respectively fixed to both sides of the first housing 11. The two first heads 18 are respectively and hermetically fixedly connected to the first housing 11 through first flanges 19. A first tube-side inlet 181 and a first tube-side outlet 182 are respectively provided on one of the first heads 18, and the first tube-side inlet 181 and the first tube-side outlet 182 are respectively communicated with the first heat exchange tubes. After the refrigerant enters the first heat exchange tubes from the first tube-side inlet 181 and exchanges heat with the gas in the first shell-side, it flows out from the first tube-side outlet 182. The specific arrangement of the first heat exchange tubes is well-known to those skilled in the art and can be referred to the detailed records in the prior art. Here, it will not be elaborated.

[0065] In a specific embodiment, the first condenser 1 further includes a first baffle rod (not shown in the figure) disposed in the first housing 11. The first baffle rod is used to support the first heat exchange tubes and change the flow direction of the fluid in the first shell-side. Compared with other types of support structures, the baffle rod has less resistance, thereby further reducing the pressure drop of the condenser in the high-vacuum system and improving the condensation effect. The specific arrangement of the first baffle rod is well-known to those skilled in the art and can be referred to the detailed records in the prior art. Here, it will not be elaborated.

[0066] In a specific embodiment, referring to Figure 1 As shown, the second condenser 2 further includes second heads 25 respectively fixed to both sides of the second housing 21. The two second heads 25 are respectively and hermetically fixedly connected to the second housing 21 through second flanges 26. A second tube-side inlet 251 and a second tube-side outlet 252 are respectively provided on one of the second heads 25, and the second tube-side inlet 251 and the second tube-side outlet 252 are respectively communicated with the second heat exchange tubes. After the refrigerant enters the second heat exchange tubes from the second tube-side inlet 251 and exchanges heat with the gas in the second shell-side, it flows out from the second tube-side outlet 252. The specific arrangement of the second heat exchange tubes is well-known to those skilled in the art and can be referred to the detailed records in the prior art. Here, it will not be elaborated.

[0067] In a specific embodiment, the second condenser 2 further includes a second baffle rod (not shown in the figure) disposed in the second housing 21. The second baffle rod is used to support the second heat exchange tubes and change the flow direction of the fluid in the second shell-side. Compared with other types of support structures, the baffle rod has less resistance, thereby further reducing the pressure drop of the condenser in the high-vacuum system and improving the condensation effect. The specific arrangement of the second baffle rod is well-known to those skilled in the art and can be referred to the detailed records in the prior art. Here, it will not be elaborated.

[0068] In a specific embodiment, referring to Figure 1As shown, the inner diameters of the two side portions of the first housing 11 are greater than the inner diameter of the second housing 21. Since part of the gas will be cooled into condensate in the first housing 11, the amount of gas entering the second housing 21 is reduced, and the condensate generated by the cooling of the gas flows downward. There will be more condensate in the first housing 11 than in the second housing 21. Setting the inner diameters of the two side portions of the first housing 11 to be greater than the inner diameter of the second housing 21 can ensure that there is sufficient heat exchange area in the first housing 11 and improve the condensation efficiency.

[0069] In a specific embodiment, referring to Figure 1 As shown, the high-vacuum overlapping condenser may further include support columns 3. The support columns 3 are respectively fixedly connected to the first condenser 1 and the second condenser 2 and can support the first condenser 1 and the second condenser 2; specifically, the number of support columns 3 is at least two, and they are fixed to the side portions of the first condenser 1 and the second condenser 2. The specific shape and number of the support columns 3 can be reasonably set according to the weights of the first condenser 1 and the second condenser 2, and are not limited herein.

[0070] In the embodiment of the present invention, for the high-vacuum overlapping condenser provided, the housing expansion section 113 of the first condenser 1 can be provided with a total gas phase inlet 14 with a larger diameter while keeping the diameter of the condenser main body unchanged, thereby reducing the gas flow rate at the total gas phase inlet 14. Moreover, compared with multiple gas phase inlets, setting a single gas phase inlet with a larger diameter can reduce the number of flow direction turns at the distribution between the gas phase main pipe and the total gas phase inlet 14; by directly connecting the two gas phase inlets of the second condenser 2 and the two gas phase outlets of the first condenser 1 directly up and down, the number of flow direction turning points between the first condenser 1 and the second condenser 2 can be reduced, thereby greatly reducing the pressure drop; by providing a sufficiently large liquid accumulation package 15 at the lower part of the housing expansion section 113 of the first housing 11, timely collection of condensate is realized, ensuring that there is sufficient gas phase heat exchange area inside the first housing 11 and the second housing 21, and improving the condensation efficiency; by providing the first baffle and the second baffle, the first shell side and the second shell side are respectively separated, reducing the gas flow rate and velocity, thereby reducing the generation of pressure drop; the above settings all enable the high-vacuum overlapping condenser to be better applicable to the high-vacuum system and improve the condensation effect of the high-vacuum overlapping condenser in the high-vacuum system.

[0071] Obviously, those skilled in the art can make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. The present disclosure is not limited to the exact structure described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims

1. A high-vacuum overlapping condenser, characterized in that, it includes a first condenser and a second condenser placed horizontally; the second condenser is arranged directly above the first condenser; the first condenser includes a first shell; the second condenser includes a second shell; a first gas-phase outlet and a second gas-phase outlet are arranged at the upper part of the first shell, a first gas-phase inlet and a second gas-phase inlet are arranged at the lower part of the second shell, the first gas-phase outlet is hermetically connected to the first gas-phase inlet, and the second gas-phase outlet is hermetically connected to the second gas-phase inlet; the middle part of the first shell is a shell expansion section, the inner diameter of the shell expansion section is larger than the inner diameters of the two side parts of the first shell; a total gas-phase inlet is arranged at the side part of the shell expansion section; a liquid accumulation package is arranged below the shell expansion section, and a condensate outlet is arranged at the lower part of the liquid accumulation package.

2. The high-vacuum overlapping condenser according to claim 1, characterized in that, the first condenser further includes a first heat exchange tube arranged in the first shell, and the space between the first shell and the first heat exchange tube is the first shell side; a first horizontal baffle is arranged in the middle inside the first shell, and the first horizontal baffle divides the first shell side into a first area and a second area; the first horizontal baffle is located on the central axis of the total gas-phase inlet.

3. The high-vacuum overlapping condenser according to claim 2, characterized in that, the first condenser further includes first end heads fixed to both sides of the first shell; the first end heads are provided with a first tube side inlet and a first tube side outlet; the first tube side inlet and the first tube side outlet are respectively communicated with the first heat exchange tube.

4. The high-vacuum overlapping condenser according to claim 2, characterized in that, the first condenser further includes a first baffle rod arranged in the first shell; the first baffle rod is used for supporting the first heat exchange tube and changing the flow direction of the fluid in the first shell side.

5. The high-vacuum overlapping condenser according to claim 1, characterized in that, the second condenser includes a second heat exchange tube arranged in the second shell, and the space between the second shell and the second heat exchange tube is the second shell side; a second horizontal baffle is arranged in the middle inside the second shell, and the second horizontal baffle divides the second shell side into a third area and a fourth area.

6. The high-vacuum overlapping condenser according to claim 5, characterized in that, the second condenser further includes second end heads fixed to both sides of the second shell; the second end heads are provided with a second tube side inlet and a second tube side outlet; the second tube side inlet and the second tube side outlet are respectively communicated with the second heat exchange tube.

7. The high-vacuum overlapping condenser according to claim 5, characterized in that, the second condenser further includes a second baffle rod arranged in the second shell; the second baffle rod is used for supporting the second heat exchange tube and changing the flow direction of the fluid in the second shell side.

8. The high-vacuum overlapping condenser according to claim 5, characterized in that, the second condenser further includes a non-condensable gas outlet; the non-condensable gas outlet is arranged at the upper part in the middle of the second shell; The second lateral baffle is located on the central axis of the non-condensable gas outlet.

9. The high-vacuum overlapping condenser according to claim 1, wherein, the inner diameters of both side portions of the first housing are greater than the inner diameter of the second housing.

10. The high-vacuum overlapping condenser according to claim 1, wherein, it further includes support columns; the support columns are respectively fixedly connected to the first condenser and the second condenser and are used for supporting the first condenser and the second condenser.

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