Gas sampling and analysis device for inner cover of annealing ring furnace and annealing ring furnace

Abstract

The utility model provides a kind of inner cover gas sampling analysis device and annealing ring furnace of annealing ring furnace, belong to heat treatment equipment technical field, to detect different inner cover protective gas, the inner cover gas sampling analysis device of annealing ring furnace includes first joint mechanism (1), second joint mechanism (2) and gas analysis instrument (3), first joint mechanism (1) contains first joint (11), second joint mechanism (2) contains second joint (21), first joint (11) can be inserted with second joint (21) or separate, gas analysis instrument (3) can analyze the gas in cover inner cavity (411).The inner cover gas sampling analysis device of annealing ring furnace can detect the composition and content of protective gas in different inner cover, improve product quality.

Description

Technical Field

[0001] This utility model relates to the field of heat treatment equipment technology, and in particular to an inner gas sampling and analysis device for an annealing ring furnace and an annealing ring furnace. Background Technology

[0002] Grain-oriented silicon steel is a crucial material in power grid transmission and transformation systems, and the high-temperature annealing ring furnace is the core heat treatment equipment for producing it. The annealing ring furnace consists of a furnace body and an inner platform. Steel coils are placed on trolleys and then covered by the inner shroud. The trolleys rotate, transporting the coils to different heat treatment stages. Different protective gases and pressures are introduced into the inner shroud at different temperature stages according to process requirements.

[0003] In the high-temperature annealing of grain-oriented silicon steel in an annular furnace, besides temperature, the protective atmosphere is a key factor for the successful secondary recrystallization of the steel coil, the formation of an excellent magnesium silicate underlayer, and the thorough purification of the steel. Three types of protective gases are circulated through the furnace shroud: nitrogen, hydrogen, and a hydrogen-nitrogen mixture. However, current technology lacks specific methods for verifying and testing the composition and content of these protective gases within the shroud. Utility Model Content

[0004] To detect the protective gases in different inner covers, this invention provides a gas sampling and analysis device for the inner cover of an annealing ring furnace and an annealing ring furnace. The gas sampling and analysis device for the inner cover of the annealing ring furnace can detect the composition and content of the protective gases in different inner covers, thereby improving product quality.

[0005] The technical solution adopted by this utility model embodiment to solve its technical problem is:

[0006] A gas sampling and analysis device for the inner shroud of an annealing ring furnace includes a first connector mechanism, a second connector mechanism, and a gas analyzer. The first connector mechanism includes a first connector, and the second connector mechanism includes a second connector. The second connector communicates with the inner cavity of the inner shroud of the annealing ring furnace. The first connector can be inserted into or separated from the second connector. The protective gas in the inner cavity can enter the gas analyzer, and the gas analyzer can analyze the protective gas in the inner cavity.

[0007] The first connector mechanism also includes a guide rod, and the second connector mechanism also includes a guide cone sleeve. The guide rod can be inserted into or separated from the guide cone sleeve. When the guide rod is inserted into the guide cone sleeve, the first connector can be inserted into the second connector.

[0008] The guide rod has a tapered head at its end, and the guide cone sleeve contains a tapered hole. The top of the tapered head of the guide rod can face the bottom of the tapered hole of the guide cone sleeve, and the tapered head of the guide rod can be matched and inserted into the tapered hole of the guide cone sleeve.

[0009] The second connector mechanism also includes a connector base and a gas guide pipe. The second connector and the guide cone sleeve are both fixed on the connector base. The axis of the second connector extends along the diameter of the annealing ring furnace. The guide cone sleeve is located on both sides of the guide cone sleeve along the circumference of the annealing ring furnace. The axis of the guide cone sleeve is parallel to the axis of the second connector. One end of the gas guide pipe is connected to the second connector, and the other end of the gas guide pipe is located in the cavity inside the hood. The gas guide pipe passes through the trolley of the annealing ring furnace.

[0010] The axis of the first joint extends along the diameter of the annealing ring furnace. The guide rod is located on both sides of the first joint along the circumference of the annealing ring furnace. The axis of the guide rod is parallel to the axis of the first joint. The guide rod is connected to a guide cylinder, which can drive the guide rod to engage or disengage with the guide cone sleeve.

[0011] The first connector is connected to the guide rod via a sliding frame. The first connector and the sliding frame can move along the axis of the guide rod. The sliding frame is connected to a docking cylinder, which can drive the first connector to plug into or separate from the second connector. The first connector is a male connector, and the second connector is a female connector.

[0012] The sliding frame includes a sliding seat and a mounting frame. The sliding seat is fixed to both sides of the mounting frame along the circumference of the annealing ring furnace. The sliding seat is connected to the guide rods one by one. The mounting frame includes an outer shell and an inner cavity. One end of the outer shell faces the furnace body of the annealing ring furnace. An mounting cylinder seat is provided at one end of the outer shell. The first joint is sleeved in the mounting cylinder seat. The first joint can swing around the axis of the first joint within a set range.

[0013] The first connector includes an inner tube, an outer tube, and a buffer spring. The inner tube is fitted inside the outer tube and can move axially relative to the outer tube. The inner tube can be inserted into or separated from the second connector. The two ends of the buffer spring abut against the inner tube and the outer tube, respectively. A fixing ring is fixedly connected to the outside of the outer tube. The mounting base includes a first end cap, a fixing cylinder, and a second end cap connected sequentially along the axial direction of the first connector. The first end cap is located inside the internal cavity, and the second end cap is located outside the internal cavity. The inner circumferential surface of the fixing cylinder includes a first inner large-diameter section, a first annular transition surface, a small-diameter section, a second annular transition surface, and a second inner large-diameter section connected sequentially along the axial direction. A first flexible rubber ring is fitted between the mounting base and the first connector. The second flexible rubber ring has a smaller inner diameter than the outer diameter of the outer tube. The outer circumferential surface of the first flexible rubber ring is connected to the first inner large diameter section, and the inner circumferential surface of the first flexible rubber ring is connected to the outer circumferential surface of the outer tube. The outer end face of the first flexible rubber ring abuts against the first end cap, and the inner end face of the first flexible rubber ring abuts against the first annular transition surface. The outer circumferential surface of the second flexible rubber ring is connected to the second inner large diameter section, and the inner circumferential surface of the second flexible rubber ring is connected to the outer circumferential surface of the outer tube. The outer end face of the second flexible rubber ring abuts against the second end cap, and the inner end face of the second flexible rubber ring abuts against the fixing ring. The fixing ring abuts against the second annular transition surface, and the outer diameter of the fixing ring is smaller than the inner diameter of the second inner large diameter section.

[0014] Multiple first connector mechanisms and multiple second connector mechanisms are arranged at intervals along the circumference of the annealing ring furnace. The number of first connector mechanisms is less than or equal to the number of second connector mechanisms. Each second connector mechanism corresponds to a hood position of the annealing ring furnace. Each gas analyzer is connected to a first connector mechanism. Both the first and second connector mechanisms are located on the inner side of the inner circumferential sidewall of the annealing ring furnace body. The first connector mechanisms are fixed to the ground, and the second connector mechanisms are connected and fixed to the trolley of the annealing ring furnace. The gas analyzer can detect the composition and content of nitrogen and hydrogen in the protective gas.

[0015] An annealing ring furnace, the annealing ring furnace comprising an inner shroud, a trolley, a furnace body, and the aforementioned gas sampling and analysis device for the inner shroud of the annealing ring furnace.

[0016] An annealing ring furnace, the annealing ring furnace comprising an inner shroud, a trolley, a furnace body, and the aforementioned gas sampling and analysis device for the inner shroud of the annealing ring furnace.

[0017] The beneficial effects of this utility model embodiment are:

[0018] 1. The structural design of the first connector mechanism and the second connector mechanism can help achieve automatic docking of the first connector and the second connector under the condition of certain axial, radial and angular errors, so as to complete gas sampling.

[0019] 2. Each inner casing is equipped with a second connector, and each heat treatment section is equipped with a first connector device. This configuration not only enables sampling and testing of the protective gas in each inner casing of each heat treatment section, but also saves costs. Attached Figure Description

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention.

[0021] Figure 1 This is a top view schematic diagram of the annealing ring furnace described in this utility model.

[0022] Figure 2 It is along Figure 1 Cross-sectional view along the AA direction.

[0023] Figure 3 This is a top view of the first joint mechanism.

[0024] Figure 4 yes Figure 3 Enlarged diagram of part B in the middle.

[0025] Figure 5This is a top view of the second connector mechanism.

[0026] The annotations in the attached figures are explained as follows:

[0027] 1. First connecting mechanism; 2. Second connecting mechanism; 3. Gas analysis instrument; 4. Annealing ring furnace;

[0028] 11. First connector; 12. Guide rod; 13. Guide cylinder; 14. Sliding frame; 15. Docking cylinder;

[0029] 21. Second connector; 22. Guide cone sleeve; 23. Connector base; 24. Air guide tube;

[0030] 41. Inner cover; 42. Cart; 43. Furnace body; 44. Cover position;

[0031] 111. Inner tube; 112. Outer tube; 113. Buffer spring; 114. Fixing ring; 115. First flexible rubber ring; 116. Second flexible rubber ring;

[0032] 121. Conical head;

[0033] 141. Sliding seat; 142. Mounting frame; 143. Mounting cylinder seat;

[0034] 221. Conical hole;

[0035] 411. Internal cavity of the cover;

[0036] 431. Inner peripheral sidewall; 432. Outer peripheral sidewall;

[0037] 1421. Outer shell; 1422. Internal cavity;

[0038] 1431. First end cap; 1432. Fixing cylinder; 1433. Second end cap; 1434. First inner large diameter section; 1435. First annular transition surface; 1436. Small diameter section; 1437. Second annular transition surface; 1438. Second inner large diameter section. Detailed Implementation

[0039] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0040] For ease of understanding and description, the following description of this utility model uses absolute positional relationships. Unless otherwise specified, the directional word "above" indicates... Figure 2 The direction above, the directional word "down" indicates Figure 2 The lower side of the middle, the directional word "left" indicates Figure 2 The left side of the direction, the directional word "right" indicates Figure 2The right-hand direction in the text, the directional word "front" indicates perpendicular to. Figure 2 The direction of the paper and the direction pointing inwards; the directional word "back" indicates perpendicular to. Figure 2 The direction of the orientation is towards the outside of the paper. This invention is described from the perspective of a reader or user, but the aforementioned directional terms should not be construed as limiting the scope of protection of this invention. Regarding the material, weight, size, angle, and parameters of the components, those skilled in the art can determine or replace them based on actual needs or a limited number of experiments.

[0041] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the gas sampling and analysis device for the inner shroud of the annealing ring furnace described in this embodiment includes a first connector mechanism 1, a second connector mechanism 2, and a gas analyzer 3. The first connector mechanism 1 includes a first connector 11, and the second connector mechanism 2 includes a second connector 21. The second connector 21 communicates with the inner cavity 411 of the inner shroud 41 of the annealing ring furnace 4. The first connector 11 can be inserted into or separated from the second connector 21. The protective gas in the inner cavity 411 can enter the gas analyzer 3, and the gas analyzer 3 can analyze the protective gas in the inner cavity 411.

[0042] In order to detect the composition and content of the protective gas in different inner shrouds, the gas analyzer 3 in the gas sampling and analysis device of the inner shroud of the annealing ring furnace can detect the composition and content of the protective gas in each inner shroud, thereby improving the product quality of the annealing ring furnace.

[0043] like Figure 3 , Figure 4 , Figure 5 As shown, in order to facilitate the insertion of the first connector 11 and the second connector 21, the first connector mechanism 1 also includes a guide rod 12, and the second connector mechanism 2 also includes a guide cone sleeve 22. The guide rod 12 can be inserted into or separated from the guide cone sleeve 22. When the guide rod 12 is inserted into the guide cone sleeve 22, the first connector 11 can be inserted into the second connector 21.

[0044] The end of the guide rod 12 is provided with a tapered head 121, and the guide cone sleeve 22 contains a tapered hole 221. The top end of the tapered head 121 of the guide rod 12 can face the bottom end of the tapered hole 221 of the guide cone sleeve 22. The bottom diameter of the tapered hole 221 is larger than the top diameter of the tapered hole 221. The tapered hole 221 can guide the tapered head 121 to be inserted, and the tapered head 121 of the guide rod 12 can be matched and inserted into the tapered hole 221 of the guide cone sleeve 22.

[0045] like Figure 1 , Figure 2As shown, the second connector mechanism 2 also includes a connector base 23 and a gas guide pipe 24. The second connector 21 and the guide cone sleeve 22 are both fixed on the connector base 23. The axis of the second connector 21 extends along the diameter direction of the annealing ring furnace 4. The guide cone sleeve 22 is located on both sides of the guide cone sleeve 22 along the circumference of the annealing ring furnace 4. The axis of the guide cone sleeve 22 is parallel to the axis of the second connector 21. One end of the gas guide pipe 24 is connected to the second connector 21. The gas guide pipe 24 passes through the trolley 42 of the annealing ring furnace 4. The other end of the gas guide pipe 24 is located in the cavity 411 inside the hood.

[0046] For example, the other end of the gas guide tube 24 is located in the cavity 411 inside the two inner covers 41 on a cover position 44. The gas guide tube 24 can export the protective gas inside the cavity 411 inside the two inner covers 41 on a cover position 44. The protective gas can enter the gas analyzer 3 through the second connector 21 and the first connector 11 in sequence.

[0047] The axis of the first joint 11 extends along the diameter of the annealing ring furnace 4. The guide rod 12 is located on both sides of the first joint 11 along the circumference of the annealing ring furnace 4. The axis of the guide rod 12 is parallel to the axis of the first joint 11. The guide rod 12 is connected to the guide cylinder 13. The guide cylinder 13 can drive the guide rod 12 to move back and forth along the axial direction of the guide rod 12. The guide cylinder 13 can drive the guide rod 12 to be inserted into or separated from the guide cone sleeve 22.

[0048] The first connector 11 is connected to the guide rod 12 via the sliding frame 14. The first connector 11 and the sliding frame 14 can move along the axial direction of the guide rod 12. The sliding frame 14 is connected to a docking cylinder 15. The docking cylinder 15 can drive the first connector 11 and the sliding frame 14 to move along the axial direction of the guide rod 12. The docking cylinder 15 can drive the first connector 11 to be inserted into or separated from the second connector 21. The first connector 11 is a male connector, and the second connector 21 is a female connector.

[0049] like Figure 3 , Figure 4 , Figure 5As shown, the sliding frame 14 includes a sliding seat 141 and a mounting frame 142. The sliding seat 141 is fixed to both sides of the mounting frame 142 along the circumference of the annealing ring furnace 4. The sliding seat 141 is connected to the guide rod 12 in a one-to-one correspondence and is sleeved on the guide rod 12. The mounting frame 142 includes an outer shell 1421 and an inner cavity 1422. The outer shell 1421 can be a cylindrical structure with both upper and lower ends open. One end of the outer shell 1421 faces the furnace body 43 of the annealing ring furnace 4, and the mounting cylinder seat 143 is fixedly connected to one end of the outer shell 1421. The first connector 11 is sleeved in the mounting cylinder seat 143 and can swing around the axis of the first connector 11 within a set range. For example, the first connector 11 can swing around the axis of the first connector 11 within the range of 1° to 5°. The first connector 11 can swing at a certain angle within the sliding frame 14 to eliminate the influence of angle errors caused by trolley rotation, thermal expansion, etc.

[0050] The first connector 11 includes an inner tube 111, an outer tube 112, and a buffer spring 113. The inner tube 111 is fitted inside the outer tube 112. The inner tube 111 can move axially relative to the outer tube 112. The length of the inner tube 111 is greater than the length of the outer tube 112. The inner tube 111 can be inserted into or separated from the second connector 21. The two ends of the buffer spring 113 abut against the inner tube 111 and the outer tube 112, respectively. A fixing ring 114 is fixedly connected to the outer tube 112. The buffer spring 113 can provide buffering force and restoring force to the inner tube 111 to reduce the impact when the connector is connected.

[0051] like Figure 4As shown, the mounting base 143 includes a first end cap 1431, a fixing cylinder 1432, and a second end cap 1433 arranged sequentially along the axial direction of the first connector 11. Both the first end cap 1431 and the second end cap 1433 are screwed to the fixing cylinder 1432. The first end cap 1431 is located inside the internal cavity 1422, and the second end cap 1433 is located outside the internal cavity 1422. The inner circumferential surface of the fixing cylinder 1432 includes a first inner large-diameter section 1434, a first annular transition surface 1435, a small-diameter section 1436, a second annular transition surface 1437, and a second inner large-diameter section 1438 arranged sequentially along the axial direction. A first flexible rubber ring 115 and a second flexible rubber ring 116 are sleeved between the mounting base 143 and the first connector 11. The first flexible rubber ring 115 and the second flexible rubber ring 116 are made of soft rubber. The small-diameter section 1438... The inner diameter of the first flexible rubber ring 115 is larger than the outer diameter of the outer tube 112. The outer circumferential surface of the first flexible rubber ring 115 is connected to the first inner large diameter section 1434. The inner circumferential surface of the first flexible rubber ring 115 is connected to the outer circumferential surface of the outer tube 112. The outer end face of the first flexible rubber ring 115 abuts against the first end cap 1431. The inner end face of the first flexible rubber ring 115 abuts against the first annular transition surface 1435. The outer circumferential surface of the second flexible rubber ring 116 is connected to the second inner large diameter section 1438. The inner circumferential surface of the second flexible rubber ring 116 is connected to the outer circumferential surface of the outer tube 112. The outer end face of the second flexible rubber ring 116 abuts against the second end cap 1433. The inner end face of the second flexible rubber ring 116 abuts against the fixing ring 114. The fixing ring 114 abuts against the second annular transition surface 1437. The outer diameter of the fixing ring 114 is smaller than the inner diameter of the second inner large diameter section 1438.

[0052] like Figure 1 , Figure 2 As shown, multiple first connector mechanisms 1 and multiple second connector mechanisms 2 are arranged circumferentially around the annealing ring furnace 4. The number of first connector mechanisms 1 is less than or equal to the number of second connector mechanisms 2. The annealing ring furnace 4 may contain multiple heating sections and cooling sections. The first connector mechanism 1 may correspond one-to-one with multiple heating sections and cooling sections. The second connector mechanism 2 may correspond one-to-one with the hood position 44 of the annealing ring furnace 4. The gas analyzer 3 is connected to the first connector mechanism 1 one-to-one through the gas supply pipe. For example, the gas analyzer 3 is connected to the left end of the inner tube 111 of the first connector mechanism 1 one-to-one through the gas supply pipe.

[0053] A gas pump can be installed on the gas supply pipe. The gas pump facilitates the delivery of the protective gas in the inner shroud 41 through the gas guide pipe 24, the second connector 21, the inner pipe 111, and the gas supply pipe to the gas analyzer 3. The gas analyzer 3 can be located inside or outside the internal cavity 1422. The gas analyzer 3 can detect the composition and content of nitrogen in the protective gas, and it can also detect the composition and content of hydrogen in the protective gas. The first connector mechanism 1 and the second connector mechanism 2 are both located on the inner side of the inner peripheral sidewall 431 of the furnace body 43 of the annealing ring furnace 4. The first connector mechanism 1 is fixed to the ground (i.e., on the civil engineering foundation), and the connector base 23 of the second connector mechanism 2 is connected and fixed to the trolley 42 of the annealing ring furnace 4.

[0054] The following describes an annealing ring furnace, such as... Figure 1 , Figure 2 As shown, the annealing ring furnace 4 includes an inner shroud 41, a trolley 42, a furnace body 43, and the aforementioned gas sampling and analysis device for the inner shroud of the annealing ring furnace. The furnace body 43 has an inner circumferential sidewall 431 and an outer circumferential sidewall 432. The trolley 42 has multiple shroud positions 44, which are evenly spaced along the circumference of the annealing ring furnace 4. Each shroud position 44 is provided with two inner shrouds 41.

[0055] For example, the trolley 42 contains 36 cover positions 44, with a total of 72 inner covers 41. Each inner cover 41 contains a steel coil. There are four first joint mechanisms 1, which are evenly spaced along the circumference of the annealing ring furnace 4. Similarly, 36 second joint mechanisms 2 are also evenly spaced along the circumference of the annealing ring furnace 4. The trolley 42 rotates 10° each time, and after each rotation, the four first joint mechanisms 1 and the four second joint mechanisms 2 are connected in a one-to-one correspondence.

[0056] The following describes the gas sampling and analysis device inside the annealing ring furnace and the working process of the annealing ring furnace.

[0057] The steel coil is placed on the trolley 42 and then covered with an inner cover 41. The protective gas inside the inner cover 41 is transmitted to the second joint 21 through a pipeline.

[0058] Step 1: The first connector 11 separates from the second connector 21, the guide rod 12 separates from the guide cone sleeve 22, and the trolley 42 rotates 10°.

[0059] Step 2: First, the guide rod 12 is inserted into the guide cone sleeve 22 to complete the initial positioning (pre-positioning), eliminating most of the positioning deviations caused by the rotation of the trolley and preparing for the joint docking. Then, the first joint 11 is inserted into the second joint 21, and the protective gas in the cavity 411 inside the cover enters the gas analyzer 3 through the second joint 21 and the first joint 11 in sequence. The gas analyzer 3 analyzes the protective gas in the cavity 411 inside the cover.

[0060] Step 3: Repeat steps 1 to 2 in sequence. The gas sampling and analysis device inside the annealing ring furnace and the annealing ring furnace are simple in structure, easy to manufacture and install, reliable in use, and easy to maintain.

[0061] The above description is merely a specific embodiment of this utility model and should not be construed as limiting the scope of its implementation. Therefore, any substitution of equivalent components or equivalent changes and modifications made within the scope of protection of this utility model should still fall within its coverage. Furthermore, the technical features, technical solutions, and embodiments of this utility model can be freely combined and used.

Claims

1. A gas sampling and analysis device for the inner shroud of an annealing ring furnace, characterized in that, The gas sampling and analysis device for the inner shroud of the annealing ring furnace includes a first connector mechanism (1), a second connector mechanism (2), and a gas analyzer (3). The first connector mechanism (1) contains a first connector (11), and the second connector mechanism (2) contains a second connector (21). The second connector (21) is connected to the inner cavity (411) of the inner shroud (41) of the annealing ring furnace (4). The first connector (11) can be inserted into or separated from the second connector (21). The protective gas in the inner cavity (411) can enter the gas analyzer (3), and the gas analyzer (3) can analyze the protective gas in the inner cavity (411).

2. The gas sampling and analysis device for the inner shroud of the annealing ring furnace according to claim 1, characterized in that, The first connector mechanism (1) also includes a guide rod (12), and the second connector mechanism (2) also includes a guide cone sleeve (22). The guide rod (12) can be inserted into or separated from the guide cone sleeve (22). When the guide rod (12) is inserted into the guide cone sleeve (22), the first connector (11) can be inserted into the second connector (21).

3. The gas sampling and analysis device for the inner shroud of the annealing ring furnace according to claim 2, characterized in that, The end of the guide rod (12) is provided with a tapered head (121), and the guide cone sleeve (22) contains a tapered hole (221). The top of the tapered head (121) of the guide rod (12) can face the bottom of the tapered hole (221) of the guide cone sleeve (22), and the tapered head (121) of the guide rod (12) can be matched and inserted with the tapered hole (221) of the guide cone sleeve (22).

4. The gas sampling and analysis device for the inner shroud of the annealing ring furnace according to claim 2, characterized in that, The second connector mechanism (2) also includes a connector base (23) and a gas guide pipe (24). The second connector (21) and the guide cone sleeve (22) are both fixed on the connector base (23). The axis of the second connector (21) extends along the diameter direction of the annealing ring furnace (4). The guide cone sleeve (22) is located on both sides of the guide cone sleeve (22) along the circumference of the annealing ring furnace (4). The axis of the guide cone sleeve (22) is parallel to the axis of the second connector (21). One end of the gas guide pipe (24) is connected to the second connector (21). The other end of the gas guide pipe (24) is located in the cavity (411) inside the cover. The gas guide pipe (24) passes through the trolley (42) of the annealing ring furnace (4).

5. The gas sampling and analysis device for the inner shroud of the annealing ring furnace according to claim 2, characterized in that, The axis of the first joint (11) extends along the diameter of the annealing ring furnace (4). The guide rod (12) is located on both sides of the first joint (11) along the circumference of the annealing ring furnace (4). The axis of the guide rod (12) is parallel to the axis of the first joint (11). The guide rod (12) is connected to a guide cylinder (13). The guide cylinder (13) can drive the guide rod (12) to engage or disengage from the guide cone sleeve (22).

6. The gas sampling and analysis device for the inner shroud of the annealing ring furnace according to claim 5, characterized in that, The first connector (11) is connected to the guide rod (12) via the sliding frame (14). The first connector (11) and the sliding frame (14) can move along the axis of the guide rod (12). The sliding frame (14) is connected to a docking cylinder (15). The docking cylinder (15) can drive the first connector (11) to be inserted into or separated from the second connector (21). The first connector (11) is a male connector, and the second connector (21) is a female connector.

7. The gas sampling and analysis device for the inner shroud of the annealing ring furnace according to claim 6, characterized in that, The sliding frame (14) includes a sliding seat (141) and a mounting frame (142). The sliding seat (141) is fixed to both sides of the mounting frame (142) along the circumference of the annealing ring furnace (4). The sliding seat (141) is connected to the guide rod (12) one by one. The mounting frame (142) includes an outer shell (1421) and an inner cavity (1422). One end of the outer shell (1421) faces the furnace body (43) of the annealing ring furnace (4). One end of the outer shell (1421) is provided with a mounting cylinder seat (143). The first connector (11) is sleeved in the mounting cylinder seat (143). The first connector (11) can swing around the axis of the first connector (11) within a set range.

8. The gas sampling and analysis device for the inner shroud of the annealing ring furnace according to claim 7, characterized in that, The first connector (11) includes an inner tube (111), an outer tube (112), and a buffer spring (113). The inner tube (111) is fitted inside the outer tube (112). The inner tube (111) can move axially relative to the outer tube (112). The inner tube (111) can be inserted into or separated from the second connector (21). The two ends of the buffer spring (113) abut against the inner tube (111) and the outer tube (112) respectively. A fixing ring (114) is fixedly connected to the outside of the outer tube (112). The mounting base (143) includes a ring along the first connector (11). A first end cap (1431), a fixed cylinder (1432), and a second end cap (1433) are connected axially in sequence. The first end cap (1431) is located inside the internal cavity (1422), and the second end cap (1433) is located outside the internal cavity (1422). The inner circumferential surface of the fixed cylinder (1432) contains a first inner large diameter section (1434), a first annular transition surface (1435), a small diameter section (1436), a second annular transition surface (1437), and a second inner large diameter section (1438) connected axially in sequence. A mounting base (143) is also included. A first flexible rubber ring (115) and a second flexible rubber ring (116) are fitted between the first connector (11) and the second connector (11). The inner diameter of the small diameter section (1436) is larger than the outer diameter of the outer tube (112). The outer circumferential surface of the first flexible rubber ring (115) is connected to the first inner large diameter section (1434), the inner circumferential surface of the first flexible rubber ring (115) is connected to the outer circumferential surface of the outer tube (112), the outer end face of the first flexible rubber ring (115) abuts against the first end cap (1431), and the inner end face of the first flexible rubber ring (115) is connected to the first annular transition surface (116). 1435) Abutting; the outer circumferential surface of the second flexible rubber ring (116) is connected to the second inner large diameter section (1438), the inner circumferential surface of the second flexible rubber ring (116) is connected to the outer circumferential surface of the outer tube (112), the outer end face of the second flexible rubber ring (116) abuts with the second end cap (1433), the inner end face of the second flexible rubber ring (116) abuts with the fixing ring (114), the fixing ring (114) abuts with the second annular transition surface (1437), and the outer diameter of the fixing ring (114) is smaller than the inner diameter of the second inner large diameter section (1438).

9. The gas sampling and analysis device for the inner shroud of the annealing ring furnace according to claim 1, characterized in that, Multiple first connector mechanisms (1) and multiple second connector mechanisms (2) are arranged at intervals along the circumference of the annealing ring furnace (4). The number of first connector mechanisms (1) is less than or equal to the number of second connector mechanisms (2). The second connector mechanisms (2) correspond one-to-one with the hood positions (44) of the annealing ring furnace (4). The gas analyzer (3) is connected one-to-one with the first connector mechanism (1). The first connector mechanism (1) and the second connector mechanism (2) are both located on the inner side of the inner circumferential sidewall (431) of the furnace body (43) of the annealing ring furnace (4). The first connector mechanism (1) is fixed to the ground. The second connector mechanism (2) is connected and fixed to the trolley (42) of the annealing ring furnace (4). The gas analyzer (3) can detect the composition and content of nitrogen and hydrogen in the protective gas.

10. An annealing ring furnace, characterized in that, The annealing ring furnace (4) includes an inner cover (41), a trolley (42), a furnace body (43), and a gas sampling and analysis device for the inner cover of the annealing ring furnace as described in claim 1.

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