CN220307404U - Heating cylinder - Google Patents

Abstract

The application relates to the technical field of cold atoms, in particular to a heating cylinder, which comprises a heating cylinder body, wherein the heating cylinder body comprises an assembly section and a heating section, and the heating section and the assembly section are coaxially arranged; the assembly section is used for being sleeved on an object to be heated, and plays a role in connection; the outer wall of the heating section is provided with a heating piece for generating heat to play a role in heating; the inner diameter of the heating section is smaller than that of the assembling section, and in a state that the assembling section is sleeved on an object to be heated, the step surface of the heating section facing the assembling section and the inner wall of the assembling section are both contacted with the object to be heated; by arranging the heating section with smaller inner diameter, the contact area between the heating section and the object to be heated can be increased, the heat of the heating element is ensured to be fully conducted to the object to be heated through the heating section, and the conduction efficiency is improved; in addition, the assembly section is sleeved outside the object to be heated, and the inner wall of the assembly section is in contact with the outer wall of the object to be heated, so that the heat conduction efficiency can be further improved.

Description

Heating cylinder

Technical Field

The application relates to the technical field of cold atoms, in particular to a heating cylinder.

Background

Vacuum flange windows are common devices for ultra-high vacuum systems to provide an optical pathway or viewing window through the vacuum system. In ultra-high vacuum systems, particularly atomic molecular devices, it is often necessary to heat the materials to a gaseous state, which can deposit on the lower temperature container surfaces, including vacuum window panes, resulting in reduced transparency of the panes, circular dichroism variations, and the like. In order to avoid vapor deposition, it is generally desirable to maintain the temperature of the louvers higher than the vacuum vessel wall, while at the same time requiring uniformity of temperature to reduce temperature distortion of the louvers and deterioration of the vacuum tightness due to temperature non-uniformity of the flange, and in addition, many devices require avoidance of spike electrical noise and additional magnetic field introduction, thus requiring specialized heating cartridges.

Disclosure of Invention

The embodiment of the application provides a heating cylinder, which can solve the technical problem that vapor materials are deposited on a window sheet.

The heating cylinder that this embodiment provided, including the heating cylinder body, the heating cylinder body includes assembly section and heating section, and the coaxial setting of heating section and assembly section, assembly section are used for the cover to establish on waiting the heating object, are provided with the heating piece that is used for producing heat at the outer wall of heating section, and the internal diameter of heating section is less than the internal diameter of assembly section, under the state of waiting to heat the object is established to the assembly section cover, the step face of orientation assembly section of heating section and the inner wall of assembly section all with wait to heat the object contact.

According to the embodiment of the application, the heating element is a heating wire, and the outer wall of the heating section is provided with a wiring groove for the heating wire to run; the wire inlet and the wire outlet of the wire groove are arranged side by side, the wire groove comprises a wire inlet section and a wire outlet section, and the wire inlet section and the wire outlet section extend from one end of the heating section to the other end in a spiral manner along the outer wall of the heating section.

According to any of the foregoing embodiments of the present application, a mounting ear is provided on an outer wall of the heating cylinder body, a mounting through hole is provided on the mounting ear, and an axis of the mounting through hole is parallel to an axis of the assembly section.

According to any of the foregoing embodiments of the present application, at least 3 pairs of mounting ears are provided on the outer wall of the heating cylinder body, each pair of mounting ears is provided near both ends of the heating cylinder body, and mounting through holes of the pairs of mounting ears are coaxially provided.

According to any one of the embodiments, a plurality of heat transfer bosses distributed along the circumferential direction are arranged on the inner wall of the heating section, the surface of the heat transfer boss facing the heating section is a step surface, and the surface of the heat transfer boss facing the axis direction of the heating cylinder body jointly encloses a light passage, and the light passage is coaxial with the assembly section.

According to any of the embodiments described above, a ring of heat transfer convex ring is provided on the inner wall of the heating section, the surface of the heat transfer convex ring facing the heating section is a step surface, the inner wall of the heat transfer convex ring forms a light-passing channel, and the light-passing channel is coaxial with the assembly section.

According to any of the embodiments described above, the heat transfer collar is provided with a relief through hole, the relief through hole being coaxial with the assembly segment.

According to any of the embodiments of the application, the heat insulation layer and the heat preservation layer are sequentially arranged on the outer wall of the heating cylinder body from inside to outside.

According to any of the foregoing embodiments of the present application, the heating cylinder further includes a coaxial strut for connecting with an object to be heated, the coaxial strut is disposed on the heating cylinder body through a mounting ear in a penetrating manner, and a threaded hole matched with the fastening screw is provided on a side wall of the mounting ear.

According to any of the embodiments described above, the number of coaxial struts is 4, and the struts are uniformly distributed along the circumference of the heating cylinder body.

According to any of the foregoing embodiments of the present application, the heating cylinder further includes a heat-blocking cover plate, the heat-blocking cover plate is disposed at an end portion of the heating section of the heating cylinder body, and a light-passing hole is formed in a center of the heat-blocking cover plate, wherein a diameter of the light-passing hole is greater than or equal to an inner diameter of the heating section.

According to any of the foregoing embodiments of the present application, threaded holes through which the connection screws pass are provided at corresponding positions of the heat-blocking cover plate and the heating cylinder body.

According to the heating cylinder, the heating cylinder is sleeved on the object to be heated through the assembly section, so that the heating section is fully contacted with the object to be heated, the heat of the heating piece is fully conducted to the object to be heated through the heating section, and the conduction efficiency is improved; in addition, the assembly section is sleeved outside the object to be heated, and the inner wall of the assembly section is in contact with the outer wall of the object to be heated, so that heat conducted to the assembly section can be transferred to the object to be heated to a certain extent, and the heat conduction efficiency is further improved.

Drawings

FIG. 1 is a schematic view of a heating cartridge according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of a heating cartridge according to another embodiment of the present application;

FIG. 3 is a schematic view of a heat source layer according to another embodiment of the present disclosure;

FIG. 4 is a schematic view of a heating cartridge for heating a window flange according to an embodiment of the present disclosure;

fig. 5 is a schematic structural view of a heating cylinder for heating a window flange mounted on a vacuum chamber according to an embodiment of the present application.

Detailed Description

Features and exemplary embodiments of various aspects of the present application are described in detail below to make the objects, technical solutions and advantages of the present application more apparent, and to further describe the present application in conjunction with the accompanying drawings and the detailed embodiments. It should be understood that the specific embodiments described herein are intended to be illustrative of the application and are not intended to be limiting. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by showing examples of the present application.

The embodiment of the application provides a heating cylinder 100, and the heating cylinder 100 can be applied to heat a window sheet installed on a window, so that high-temperature gas phase materials in a cavity inside the window sheet are prevented from being deposited on the window sheet due to the fact that the temperature of the window sheet is too low. For example, the heating device can be applied to heating furnaces in the fields of petroleum and chemical industry and is used for heating an observation window on the heating furnace; and can also be applied to the technical field of cold atoms, and is used for heating a window sheet arranged on a vacuum cavity 310 in a system, so as to prevent gaseous materials in the vacuum cavity 310 from being deposited on the surface of the window sheet with lower temperature. Embodiments of the present application are described in terms of heating a window mounted on a vacuum chamber 310 in a quantum analog operating system using a heater cartridge 100.

The vacuum cavity 310 in the quantum simulation operating system is internally provided with gaseous atoms, the vacuum cavity 310 is provided with a plurality of windows, the windows are used for transmitting light, and laser can enter the vacuum cavity 310 through the windows to decelerate the gaseous atoms; a window needs to be sealed with a window that is typically mounted to the window by window flange 210.

Referring to fig. 1, a heating cartridge 100 provided in the present application includes a heating cartridge body 110, wherein an interior of the heating cartridge body 110 is hollow to form a light-permeable channel; the heating cylinder body 110 comprises an assembling section 111 and a heating section 112, the assembling section 111 and the heating section 112 are coaxially arranged, and the assembling section 111 and the heating section 112 can be integrally formed; the assembly section 111 is used for sleeving an object to be heated (such as a window flange 210) to play a role in connection; the outer wall of the heating section 112 is provided with a heating element 120 for generating heat to perform a heating function; the inner diameter of the heating section 112 is smaller than that of the assembling section 111, and in a state that the assembling section 111 is sleeved on an object to be heated, both a step surface 113 of the heating section 112 facing the assembling section 111 and the inner wall of the assembling section 111 are in contact with the object to be heated; by arranging the heating section 112 with smaller inner diameter, the contact area between the heating section 112 and the object to be heated can be increased, so that the heat of the heating element 120 is guaranteed to be fully conducted to the object to be heated through the heating section 112, and the conduction efficiency is improved. In addition, the assembly section 111 is sleeved outside the object to be heated, and the inner wall of the assembly section 111 contacts with the outer wall of the object to be heated, so that heat conducted to the assembly section 111 can be transferred to the object to be heated to a certain extent, and the heat conduction efficiency is further improved.

In some embodiments, the heating element 120 is a heating wire, and the outer wall of the heating section 112 is provided with a wire groove 114 for routing the heating wire; the wire inlet 1141 and the wire outlet 1142 of the wire slot 114 are arranged side by side, the wire slot 114 comprises a wire inlet section 1143 and a wire outlet section 1144, the wire inlet section 1143 and the wire outlet section 1144 are converged near the midpoint position of the whole wire slot 114, the wire inlet 1141 is positioned in the wire inlet section 1143, the wire outlet 1142 is positioned in the wire outlet section 1144, and the wire inlet section 1143 and the wire outlet section 1144 extend from one end of the heating section 112 to the other end in a spiral manner along the outer wall of the heating section 112. By the wiring groove 114 with the structure, the heating wires can extend from one end of the heating section 112 to the other end in a double-wire spiral mode, and the current directions of the two adjacent turns of the heating wires are opposite, so that the influence of a magnetic field generated by the heating wires can be reduced.

Of course, the heating element 120 may be other heating elements than a heating wire, for example, a heating belt, a heating block, or the like.

With continued reference to fig. 1, in some embodiments, a mounting ear 115 is provided on an outer wall of the heater cartridge body 110, and a mounting through hole 1151 is provided on the mounting ear 115, with an axis of the mounting through hole 1151 being parallel to an axis of the mounting section 111. The mounting lugs 115 are used to mount a rod-shaped member (for example, a coaxial strut 150 described later) for connecting the heating cylinder body 110 and the object to be heated, and the rod-shaped member is inserted into the object to be heated or other members connected to the object to be heated after passing through the mounting lugs 115, and the rod-shaped member is fixed by a set screw, thereby connecting the heating cylinder body 110 and the object to be heated. The axis of the installation through-hole 1151 is parallel to the axis of the heating cylinder body 110, and the heating cylinder body 110 can be kept at a certain coaxiality with an object to be heated or other related components by adjusting the rod-like member.

Of course, the heating cylinder body 110 may be connected to the object to be heated in other manners, for example, an internal thread is provided on the inner wall of the assembly section 111, an external thread is provided on the outer wall of the object to be heated, and the heating cylinder body 110 is connected to the object to be heated in a threaded manner.

In some embodiments, at least 3 pairs of mounting lugs 115 are provided on the outer wall of the heating cylinder body 110, and at least 3 pairs of mounting lugs 115 may be uniformly distributed along the circumferential direction of the heating cylinder body 110, each pair of mounting lugs 115 being respectively provided near both ends of the heating cylinder body 110, and the mounting through holes 1151 of the pairs of mounting lugs 115 being coaxially provided. By providing the pair of mounting lugs 115, the weight of the mounting lugs 115 and thus the weight of the entire cartridge heater 100 can be reduced as much as possible while ensuring the parallelism of the mounting through-holes 1151 with the axis of the cartridge heater body 110.

With continued reference to fig. 1, in some embodiments, a plurality of heat transfer bosses 116 are disposed on an inner wall of the heating section 112 and distributed along a circumferential direction, the heat transfer bosses 116 protrude from an outer wall of the heating cylinder body 110 toward an axis direction of the heating cylinder body 110 and extend along the axis direction of the heating cylinder body 110, a surface of the heat transfer bosses 116 facing the heating section 112 is the step surface 113 contacting with the object to be heated, and surfaces of the heat transfer bosses 116 facing the axis direction of the heating cylinder body 110 together enclose a light-passing channel 117, where the light-passing channel 117 is coaxial with the assembly section 111. The light passage 117 may be natural light or laser light. The surface area of the step surface 113 of the heat transfer boss 116 is larger, so that the contact area between the heat transfer boss and an object to be heated can be increased, and the heat exchange efficiency is improved. If other components are arranged on the surface of the object to be heated, which is contacted with the step surface 113, the interval between the adjacent heat transfer bosses 116 can play a role of avoiding; at the same time, the spacing between the heat transfer bosses 116 may also reduce the weight of the heating section 112, thereby reducing the weight of the overall heater cartridge 100, and achieving a lightweight design.

Of course, other structures may be substituted for the heat transfer boss 116. Referring to fig. 2, in some embodiments, a ring of heat transfer convex rings 118 is disposed on the inner wall of the heating section 112, the heat transfer convex rings 118 protrude from the outer wall of the heating cylinder body 110 toward the axis direction of the heating cylinder body 110 and extend along the axis direction of the heating cylinder body 110, the surface of the heat transfer convex rings 118 facing the heating section 112 is a step surface 113, the inner wall of the heat transfer convex rings 118 forms a light-passing channel 117, and the light-passing channel 117 is coaxial with the assembly section 111. The heat transfer collar 118 of this construction is a solid annular cylinder construction with a large contact surface with the object to be heated and a high heat transfer efficiency. The length of the heat transfer convex ring 118 extending in the axial direction of the heating cylinder body 110 can be made short, and the design can be made as lightweight as possible.

In some embodiments, relief throughbores 1181 are provided on heat transfer collar 118, relief throughbores 1181 being coaxial with mounting section 111. If other components are arranged on the surface of the object to be heated, which is contacted with the step surface 113, the avoidance effect can be achieved through the avoidance through holes 1181; meanwhile, the design of avoiding the through hole 1181 can also reduce the weight of the heating section 112, so that the weight of the whole heating cylinder 100 is reduced, and a certain degree of light-weight design is realized.

Referring to fig. 3, in some embodiments, a heat insulation layer 130 and a heat preservation layer 140 are sequentially disposed on an outer wall of the heating cylinder body 110 from inside to outside (the heat insulation layer and the heat preservation layer are shown as one layer in fig. 3). The heat insulating layer 130 may be made of nano aerogel, and the heating cylinder body 110 is wrapped with a heat insulating material made of nano aerogel; the insulating layer 140 may be made of aluminum foil, and the insulating layer 140 made of aluminum foil is wrapped outside the insulating layer 130 to minimize heat overflow.

Referring to fig. 4, an example of a window flange is illustrated as an object to be heated. As shown in fig. 4, a window is mounted on the window flange 210, the assembly section 111 of the heating cylinder body 110 is sleeved on the window flange 210, the step surface 113 of the heating section 112 is in contact with the surface of the window flange 210, the heat generated by the heating element 120 is conducted to the window flange 210 through the heating section 112, the window flange 210 conducts the heat to the window, the temperature of the window is raised due to heating, and gaseous substances detected in the window cannot be deposited/condensed on the surface of the window in use. The heating section 112 has an inner diameter greater than the inner diameter of the window, so that a channel with an inner diameter greater than or equal to the diameter of the window can be formed without affecting the projection of light from the heating cylinder body 110 to the window.

With continued reference to fig. 4, in some embodiments, window flange 210 may be coupled to heater cartridge 100 by flange ferrule 220, flange ferrule 220 being over window flange 210, heater cartridge body 110 being coupled to flange ferrule 220. The side wall of the flange clamping sleeve 220 is provided with a threaded through hole, after the flange clamping sleeve 220 is sleeved on the flange window, a screw is screwed into the threaded through hole to prop against the window flange 210, so that the flange clamping sleeve 220 can be fixed on the window flange 210.

With continued reference to fig. 4, in some embodiments, the heater cartridge 100 further includes a coaxial strut 150, where the coaxial strut 150 is disposed through the heater cartridge body 110 and is configured to connect the heater cartridge body 110 to an object to be heated (e.g., the window flange 210) or other intermediate connection component (e.g., the flange ferrule 220), and when installed, the coaxial strut 150 is parallel to an axis of the heater cartridge body 110 and parallel to an axis of the object to be heated (e.g., the window flange 210) or other intermediate connection component (e.g., the flange ferrule 220). The coaxiality of the heating cartridge body 110 with the object to be heated (e.g., window flange 210) or other intermediate connection component (e.g., flange ferrule 220) can be adjusted by the coax struts 150.

Specifically, the coaxial strut 150 is disposed on the heating cylinder body 110 through a mounting lug 115 disposed on the outer wall of the heating cylinder body 110; if the heating cylinder 100 is directly connected with the window flange 210, the coaxial strut 150 is arranged on the window flange 210 in a penetrating way through a mounting hole arranged on the window flange 210, and the hole axis of the mounting hole is parallel to the axis of the window flange 210; if the heating cylinder 100 and the window flange 210 are connected through the flange clamping sleeve 220, the coaxial strut 150 is arranged on the flange clamping sleeve 220 in a penetrating manner through a mounting hole arranged on the flange clamping sleeve 220, and a hole axis of the mounting hole is parallel to the axis of the flange clamping sleeve 220. Threaded holes for engagement with the fastening screws are provided on the side walls of the mounting lugs 115 and on the side walls of the window flange 210 or flange ferrule 220.

The heating cartridge 100 and window flange 210 are illustrated as being connected by a flange ferrule 220. During installation, flange clamping sleeve 220 is sleeved on window flange 210, screws are screwed into threaded through holes in the side wall of flange clamping sleeve 220, flange clamping sleeve 220 and window flange 210 are relatively fixed, coaxial support rods 150 are inserted into mounting lugs 115 on the outer wall of heating cylinder body 110 and mounting holes in flange clamping sleeve 220, and fastening screws are screwed into corresponding threaded through holes to fix heating cylinder body 110 and flange clamping sleeve 220, so that heating cylinder 100 is mounted on flange clamping sleeve 220.

Of course, external threads may be provided on the outer wall of the coaxial strut 150, and internal threaded holes matching with the external threads may be directly provided on the coaxial strut 150 and the flange sleeve 220, so as to connect the coaxial strut 150 with the heating cylinder body 110 and the flange sleeve 220.

Preferably, the number of the coaxial struts 150 is 4, and the coaxial struts are uniformly distributed along the circumferential direction of the heating cylinder body 110. Correspondingly, there are 4 pairs of mounting lugs 115 on the outer wall of the heating cylinder body 110, and 4 mounting holes on the flange clamping sleeve 220. By providing four coaxial struts 150, it is possible to conveniently adjust the coaxiality between the heating cartridge body 110 and the object to be heated.

Referring to fig. 5, taking the window flange 210 on the vacuum cavity 310 for heating installation as an example, a first light-passing hole (not shown in the drawing) is provided on the cavity wall of the vacuum cavity 310, the window flange 210 is connected with the first light-passing hole in a sealing manner, the inner wall of the heating cylinder body 110, the window and the first light-passing hole form a light-passing channel 117, and the light-passing channel 117 can pass natural light (the window can be used as an observation window at this time) or light with a specific wavelength such as laser (the window can be used for passing the laser at this time to generate acting force on substances in the vacuum cavity 310). In the embodiment of the application, the window sheet on the window can be heated while the vacuum degree of the vacuum cavity 310 is ensured, so that the function of the vacuum cavity 310 is not affected.

With continued reference to fig. 4 and 5, in some embodiments, the heating cylinder 100 further includes a heat-blocking cover 160, the heat-blocking cover 160 is disposed at an end of the heating section 112 of the heating cylinder body 110, and a second light-passing hole 161 is formed in the center of the heat-blocking cover 160, where the aperture of the second light-passing hole 161 is greater than or equal to the inner diameter of the heating section 112. By providing the heat blocking cover plate 160, the heat flow path cross-sectional area can be reduced, and the heat exchange efficiency can be increased.

In some embodiments, threaded holes through which connection screws pass are provided at corresponding positions of the heat blocking cover 160 and the heating cartridge body 110. For example, a through hole having an internal thread is provided in the heat blocking cover 160, a blind hole having an internal thread is provided in the heating cylinder body 110, and the heat blocking cover 160 and the heating cylinder body 110 are connected by screw.

Claims (12)

1. The utility model provides a heating cylinder, includes heating cylinder body, its characterized in that: the heating cylinder body comprises an assembly section and a heating section, wherein the heating section and the assembly section are coaxially arranged, the assembly section is used for being sleeved on an object to be heated, a heating piece for generating heat is arranged on the outer wall of the heating section, the inner diameter of the heating section is smaller than that of the assembly section, the assembly section is sleeved on the object to be heated, and the step surface of the heating section faces the assembly section and the inner wall of the assembly section are contacted with the object to be heated.

2. The cartridge heater of claim 1, wherein: the heating piece is a heating wire, and a wiring groove for the heating wire to run is arranged on the outer wall of the heating section; the wire inlet and the wire outlet of the wire groove are arranged side by side, the wire groove comprises a wire inlet section and a wire outlet section, and the wire inlet section and the wire outlet section are arranged side by side and extend from one end of the heating section to the other end in a spiral manner along the outer wall of the heating section.

3. The cartridge heater of claim 1, wherein: the heating cylinder comprises a heating cylinder body, and is characterized in that a mounting lug is arranged on the outer wall of the heating cylinder body, a mounting through hole is formed in the mounting lug, and the axis of the mounting through hole is parallel to the axis of the assembly section.

4. A cartridge heater as in claim 3, wherein: at least 3 pairs of mounting lugs are arranged on the outer wall of the heating cylinder body, each pair of mounting lugs is arranged near two ends of the heating cylinder body respectively, and the mounting through holes of the pairs of mounting lugs are coaxially arranged.

5. The cartridge heater of claim 1, wherein: the inner wall of the heating section is provided with a plurality of heat transfer bosses distributed along the circumferential direction, the faces of the heat transfer bosses, which face the heating section, are the step faces, the faces of the heat transfer bosses, which face the axis direction of the heating cylinder body, jointly enclose a light-passing channel, and the light-passing channel is coaxial with the assembly section.

6. The cartridge heater of claim 1, wherein: the inner wall of the heating section is provided with a circle of heat transfer convex ring, the surface of the heat transfer convex ring facing the heating section is the step surface, the inner wall of the heat transfer convex ring forms a light passage, and the light passage is coaxial with the assembly section.

7. The heater cartridge of claim 6, wherein: and the heat transfer convex ring is provided with an avoidance through hole, and the avoidance through hole is coaxial with the assembly section.

8. The cartridge heater of claim 1, wherein: the outer wall of the heating cylinder body is sequentially provided with a heat insulation layer and a heat preservation layer from inside to outside.

9. A cartridge heater as in claim 3, wherein: the heating cylinder also comprises a coaxial supporting rod which is used for being connected with the object to be heated, the coaxial supporting rod is arranged on the heating cylinder body in a penetrating way through the mounting lug, threaded holes matched with the fastening screws are formed in the side walls of the mounting lugs.

10. The heater cartridge of claim 9, wherein: the quantity of coaxial branch is 4, evenly distributed along the circumference of heating cylinder body.

11. The cartridge heater of claim 1, wherein: the heating cylinder comprises a heating section, a heating section and a heating section, and is characterized by further comprising a heat-resistant cover plate, wherein the heat-resistant cover plate is arranged at the end part of the end of the heating section of the heating cylinder body, a light-passing hole is formed in the center of the heat-resistant cover plate, and the aperture of the light-passing hole is larger than or equal to the inner diameter of the heating section.

12. The heater cartridge of claim 11, wherein: screw holes for the connecting screws to pass through are formed in the corresponding positions of the heat-resistant cover plate and the heating cylinder body.