Electrode sealing structure and electrode

Abstract

The utility model provides a kind of electrode sealing structure and electrode, electrode sealing structure includes electrode stem, O ring and electrode cap;At least two annular assembly grooves are provided on the stem of electrode stem along axial direction interval, the assembly groove includes first assembly groove and second assembly groove, the first assembly groove is closer to the lower end of the electrode stem compared with the second assembly groove;The number of O ring is at least two, each O ring is nested in one assembly groove;The electrode cap is sleeved in the outside of electrode stem, the inner wall of electrode cap and the outer surface of all O ring are in interference contact, to form at least two seals between electrode stem and electrode cap. Multiple sealing barriers are designed for the high sealing requirement of electrode, which greatly improves the sealing reliability, and can prevent the electrode cap from being trapped.

Description

Technical Field

[0001] This utility model relates to the field of electrode sealing technology, specifically to an electrode sealing structure and an electrode. Background Technology

[0002] In existing technologies, when waterproofing electrode caps, an O-ring is used between the electrode cap and the electrode rod to ensure waterproofing between them after assembly.

[0003] The electrode cap and electrode rod are usually assembled using O-rings. Since waterproofing is achieved by the O-ring being compressed and deformed, and then springing back to fill the gaps, excessive compression and deformation can cause the electrode cap to be installed too tightly.

[0004] During the installation of a conventional electrode cap, the O-ring is compressed. When the electrode cap and electrode rod begin to compress the O-ring, the O-ring forms a seal, trapping the gas inside the electrode cap. As the electrode cap continues to be pushed into place until it is fully installed, the trapped gas inside the cap is compressed, causing the trapped gas pressure to gradually increase.

[0005] If the electrode cap tightening force is insufficient, the electrode cap will easily fall off the electrode rod due to the trapped air pressure; if the electrode cap tightening force is too large, it will result in an overly tight installation feel.

[0006] In view of this, the inventors of this application have designed an electrode sealing structure and an electrode in order to overcome the above-mentioned technical problems. Utility Model Content

[0007] The technical problem to be solved by this utility model is to overcome the defect of the electrode sealing structure in the prior art, which easily leads to air trapping in the electrode cap, and to provide an electrode sealing structure and electrode.

[0008] The present invention solves the above-mentioned technical problems through the following technical solution:

[0009] This utility model provides an electrode sealing structure, characterized in that the electrode sealing structure includes an electrode rod, O-rings, and an electrode cap; at least two annular mounting grooves are spaced apart along the axial direction on the electrode rod, the mounting grooves including a first mounting groove and a second mounting groove, the first mounting groove being closer to the lower end of the electrode rod than the second mounting groove; at least two O-rings are provided, each O-ring being nested in one of the mounting grooves; the electrode cap is fitted over the outside of the electrode rod, the inner wall of the electrode cap being in interference contact with the outer surface of all the O-rings to form at least two seals between the electrode rod and the electrode cap.

[0010] According to one or more embodiments of the present invention, the bottom diameter of the second assembly groove is greater than the bottom diameter of the first assembly groove; the inner diameter of the inner wall of the electrode cap at the position corresponding to the second assembly groove is greater than the inner diameter of the inner wall of the electrode cap at the position corresponding to the first assembly groove.

[0011] According to one or more embodiments of the present invention, the O-rings installed in the first assembly groove and the second assembly groove are made of the same material, and their inner diameter and wire diameter are the same in the free state.

[0012] According to one or more embodiments of this utility model, the design of the first assembly groove, the second assembly groove, and the inner wall of the electrode cap must satisfy the following formula: ; 0.8≤X≤1; where a is the bottom diameter of the second assembly groove; b is the bottom diameter of the first assembly groove; c is the inner diameter of the inner wall of the electrode cap at the corresponding position of the second assembly groove; d is the inner diameter of the inner wall of the electrode cap at the corresponding position of the first assembly groove.

[0013] According to one or more embodiments of the present invention, the inner wall of the electrode cap is configured as a stepped shape.

[0014] According to one or more embodiments of the present invention, the inner wall of the electrode cap is configured as a cone shape.

[0015] According to one or more embodiments of the present invention, the inner wall of the electrode cap is provided with an axial venting groove, and each O-ring is provided with at least one venting groove. When the electrode cap is fully fitted on the electrode rod, the axial position of the lower end of the venting groove is higher than the sealing contact surface between the corresponding O-ring and the inner wall of the electrode cap.

[0016] According to one or more embodiments of the present invention, the exhaust groove includes a plurality of first exhaust grooves and a plurality of second exhaust grooves, wherein the O-rings in the first assembly groove are correspondingly configured with a plurality of first exhaust grooves, and the O-rings in the second assembly grooves are correspondingly configured with a plurality of second exhaust grooves.

[0017] According to one or more embodiments of the present invention, the first exhaust groove at a circumferential angular position on the inner wall of the electrode cap and the second exhaust groove at a circumferential angular position on the inner wall of the electrode cap are intersected.

[0018] According to one or more embodiments of the present invention, the electrode cap is provided with at least one protrusion, and the electrode rod is provided with a groove that matches the protrusion; when the electrode cap is fully fitted onto the electrode rod, the protrusion engages and is fixed with the groove.

[0019] This utility model also provides an electrode, characterized in that the electrode includes the electrode sealing structure described above.

[0020] The electrode sealing structure and electrode of this utility model have at least the following advantages:

[0021] The electrode sealing structure and electrode of this utility model are designed with multiple sealing barriers to meet the high sealing requirements of the electrode, which greatly improves the sealing reliability. At the same time, it provides two solutions to prevent air trapping in the electrode cap. One is to compress the two O-rings at the same time as much as possible through structural design. The other is to add an exhaust groove to discharge the gas in the electrode cap before it is fully installed. This makes the electrode cap installation process easier, requires less force, and avoids the defect that the electrode cap is easy to fall off the electrode rod due to trapped air pressure. Attached Figure Description

[0022] The above and other features, properties and advantages of this utility model will become more apparent from the following description taken in conjunction with the accompanying drawings and embodiments, in which the same reference numerals always denote the same features, wherein:

[0023] Figure 1 This is a three-dimensional schematic diagram of an embodiment of the electrode sealing structure of this utility model.

[0024] Figure 2 This is a partially enlarged schematic diagram of an embodiment of the electrode sealing structure of this utility model.

[0025] Figure 3 This is a schematic diagram of the bottom diameter of the assembly groove in one embodiment of the electrode sealing structure of this utility model.

[0026] Figure 4 This is a schematic diagram of the inner diameter of the assembly surface of the electrode cap in one embodiment of the electrode sealing structure of this utility model.

[0027] Figure 5 This is a schematic diagram of the O-ring installation in one embodiment of the electrode sealing structure of this utility model.

[0028] Figure 6 This is a schematic diagram of the second exhaust groove in one embodiment of the electrode sealing structure of this utility model.

[0029] Figure 7 This is a schematic diagram of the exhaust flow direction of the second exhaust groove in one embodiment of the electrode sealing structure of this utility model.

[0030] Figure 8 This is a schematic diagram of the first exhaust groove in one embodiment of the electrode sealing structure of this utility model.

[0031] Figure 9This is a schematic diagram of the exhaust flow direction of the first exhaust groove in one embodiment of the electrode sealing structure of this utility model.

[0032] Figure 10 This is a schematic diagram of the structural dimensions of the O-ring in one embodiment of the electrode sealing structure of this utility model.

[0033] [Attached image labels]

[0034] 100. Electrode rod

[0035] 110. Assembly slot

[0036] 111. First Assembly Slot

[0037] 112. Second assembly slot

[0038] 120. Card slot

[0039] 130, Head optical window 200, O-ring

[0040] 210. First O-ring

[0041] 220. Second O-ring

[0042] 300, Electrode Cap

[0043] 310. Exhaust channel

[0044] 311. First exhaust channel

[0045] 312. Second exhaust channel

[0046] 320. Lower end of the exhaust channel

[0047] 330. Protrusion

[0048] 340. Assembly Surface

[0049] 341. First assembly surface

[0050] 342. Second assembly surface

[0051] 350. Sensitive membrane assembly

[0052] 351. Sensitive membrane window

[0053] 352. Fluorescent Sensitive Membrane Detailed Implementation

[0054] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0055] Reference will now be made in detail to preferred embodiments of the present invention, examples of which are shown in the accompanying drawings. Wherever possible, the same reference numerals will be used in all drawings to denote the same or similar parts. Furthermore, although the terminology used in this invention is selected from commonly known and used terminology, some terms mentioned in this specification may have been chosen by the applicant at his or her discretion, and their detailed meanings are explained in the relevant sections of the description herein. Moreover, the invention should be understood not only by the actual terminology used, but also by the meaning implied by each term. Also, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale.

[0056] It should be noted that in this utility model, the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0057] See Figures 1-9 This utility model provides an electrode sealing structure, which includes an electrode rod 100, an O-ring 200, and an electrode cap 300.

[0058] At least two annular mounting grooves 110 are provided axially on the rod body of the electrode rod 100. The mounting grooves 110 include a first mounting groove 111 and a second mounting groove 112. The first mounting groove 111 is closer to the lower end of the electrode rod 100 than the second mounting groove 112.

[0059] The number of O-rings 200 is at least two, and each O-ring 200 is nested in a corresponding assembly slot 110;

[0060] The electrode cap 300 is fitted over the outside of the electrode rod 100, and the inner wall of the electrode cap 300 is in interference contact with the outer surface of all O-rings 200 to form at least two seals between the electrode rod 100 and the electrode cap 300.

[0061] It should be noted that the electrode sealing structure of this utility model can be applied to oDO electrodes or other dissolved oxygen electrode products. The O-ring 200 is a circular seal used to prevent liquid or gas leakage at the joints of mechanical parts. It relies on being compressed and filled into the sealing groove during installation to block fluid leakage channels; therefore, the O-ring 200 needs to be made of an elastic material.

[0062] Dissolved oxygen electrodes, especially oDO electrodes, require extremely high sealing performance from the electrode cap 300 because oDO electrodes operate based on the principle of fluorescence quenching. The core component is a special fluorescent dye film inside the electrode cap 300. When irradiated with excitation light, the dye emits fluorescence; dissolved oxygen molecules collide with the excited-state dye molecules, quenching (weakening) the fluorescence intensity or shortening its lifetime. The instrument calculates the oxygen concentration by precisely detecting this change in optical signal.

[0063] The electrode is sealed by encapsulating the sensitive membrane of the electrode cap 300. For example... Figure 4 and Figure 5 As shown, since the optical window 130 of the electrode optical sensor is located at the front end of the electrode rod 100, there is a spatial gap C between it and the sensitive window of the electrode cap 300 (the sensitive window includes a sensitive membrane assembly 350 composed of a sensitive membrane window 351 and a fluorescent sensitive membrane 352). The gap C needs to prevent the entry of water, dust or other contaminants. When a substance enters the gap C, it is equivalent to a medium being inserted between the electrode rod 100 and the electrode cap 300, thereby affecting the measurement performance of the optical sensor.

[0064] Because oDO electrodes or other dissolved oxygen electrodes are highly sensitive to external contaminants, the electrode sealing structure of this invention employs double O-rings 200 in conjunction with the first assembly groove 111 and the second assembly groove 112 to form at least two layers of seal. The first O-ring 200 serves as the main line of defense, blocking the intrusion of most contaminants. Even if the first O-ring 200 fails due to wear, aging, or accidental damage, the second O-ring 200 can serve as a backup barrier to maintain the internal airtightness of the electrode, thereby significantly extending the maintenance cycle and improving the reliability of the measurement.

[0065] With the double O-rings 200 installed, the installation process of the electrode cap 300 is as follows: Figure 1 As shown, its installation direction is as follows Figure 1 As shown by arrow D, the installation process involves passing through two O-rings 200 sequentially. When the electrode cap 300 and electrode rod 100 begin to compress the first O-ring 200, the gas inside the electrode cap 300 becomes trapped as the first O-ring 200 forms a seal. As the electrode cap 300 continues to be pushed until it is fully installed, the trapped gas pressure gradually increases due to compression. This trapped gas pressure can cause the electrode cap 300 to easily detach from the electrode rod 100. Therefore, an electrode cap 300 with a large locking force is required for secure fixation. However, excessive locking force can result in an overly tight installation feel.

[0066] The present invention discloses an electrode sealing structure that can effectively prevent air entrapment. This sealing structure ensures that the two O-rings 200 are compressed at the same time as much as possible, and ensures that the first O-ring 200 contacts first and then the second O-ring 200 contacts in the installation direction.

[0067] See Figures 3-4 In a preferred embodiment of the electrode sealing structure of this utility model, the bottom diameter of the second assembly groove 112 is larger than the bottom diameter of the first assembly groove 111; the inner diameter of the inner wall of the electrode cap 300 at the corresponding position of the second assembly groove 112 is larger than the inner diameter of the inner wall of the electrode cap 300 at the corresponding position of the first assembly groove 111.

[0068] Preferably, by making the O-ring 200 mounting groove on the electrode rod 100 into different sizes, and correspondingly making the mounting surface 340 on the electrode cap 300 into a stepped shape, that is, the bottom diameter of the second mounting groove 112 on the electrode rod 100 is larger than the bottom diameter of the first mounting groove 111, and the clearance diameter of the second mounting surface 342 on the electrode cap 300 corresponding to the second mounting groove 112 is correspondingly enlarged, larger than the clearance diameter of the first mounting surface 341 on the electrode cap 300 corresponding to the first mounting groove 111. The mounting surface 340 is the inner wall surface of the electrode cap 300 at the corresponding position of the mounting groove 110, the second mounting surface 342 is the inner wall surface of the electrode cap 300 at the corresponding position of the second mounting groove 112, and the first mounting surface 341 is the inner wall surface of the electrode cap 300 at the corresponding position of the first mounting groove 111.

[0069] The O-ring 200 installed in the first assembly slot 111 is the first O-ring 210, and the O-ring 200 installed in the second assembly slot 112 is the second O-ring 220. The above design allows the electrode cap 300 to contact the first O-ring 210 and the second O-ring 220 almost simultaneously.

[0070] In a preferred embodiment of the electrode sealing structure of this utility model, the O-rings 200 installed in the first assembly groove 111 and the second assembly groove 112 are made of the same material, and their inner diameter and wire diameter are the same in the free state.

[0071] It should be noted that the free state refers to the natural state of the O-ring 200 when it is not installed and is not subjected to any external force.

[0072] Preferably, two identical O-rings 200 are provided in the first assembly groove 111 and the second assembly groove 112, that is, the first O-ring 210 and the second O-ring 220 are made of the same material, and their inner diameter and wire diameter are the same in the free state. This arrangement can realize the standardization of parts, greatly improve production efficiency, and prevent the risk of misassembly during the assembly process.

[0073] like Figure 10 As shown, according to the formula for the volume of a torus: R is the outer diameter of the ring, and r is the inner diameter of the ring. When the inner diameter r of the O-ring 200 increases, the outer diameter R of the elastic O-ring 200 will also change accordingly after it is stretched and deformed.

[0074] See Figures 3-4 As a preferred embodiment of the electrode sealing structure of this utility model, the design of the first assembly groove 111, the second assembly groove 112, and the design of the inner wall of the electrode cap 300 must satisfy the following formula:

[0075]

[0076] 0.8≤X≤1

[0077] Where a is the bottom diameter of the second assembly groove 112; b is the bottom diameter of the first assembly groove 111; c is the inner diameter of the inner wall of the electrode cap 300 at the corresponding position of the second assembly groove 112; and d is the inner diameter of the inner wall of the electrode cap 300 at the corresponding position of the first assembly groove 111.

[0078] like Figure 3 As shown, the bottom diameter a of the second assembly groove 112 and the bottom diameter b of the first assembly groove 111 correspond to the inner diameter r of the O-ring 200. Figure 4 As shown, the inner diameter c of the inner wall of the electrode cap 300 at the position corresponding to the second mounting groove 112, and the inner diameter d of the inner wall of the electrode cap 300 at the position corresponding to the first mounting groove 111, correspond to the outer diameter R of the O-ring 200. Since the first O-ring 210 and the second O-ring 220 are two identical O-rings 200, their volumes are the same before and after stretching. Therefore, the above design formula can be derived according to the volume formula of the ring. When designing the first mounting groove 111, the second mounting groove 112, and the inner wall of the electrode cap 300, a, b, c, and d must satisfy the above conditions. In the above design formula, X is preferably 0.9.

[0079] When the dimensions meet the above design formula, such as Figure 5 As shown, during the installation process, it can be ensured that when the O-ring 200 is squeezed by the mounting groove of the electrode rod 100 and the structure of the electrode cap 300, the O-ring 200 is squeezed synchronously by the structure of the electrode mounting groove and the electrode cap 300, ensuring that the two O-rings 200 contact and are squeezed at the same time, thereby avoiding the sequence of the first O-ring 210 contacting first and the second O-ring 220 contacting later in the installation direction.

[0080] See Figures 3-4As a preferred embodiment of the electrode sealing structure of this utility model, the inner wall of the electrode cap 300 is set in a stepped shape.

[0081] The stepped shape refers to the fact that the inner wall of the electrode cap 300 has multiple stepped surfaces with different inner diameters. From the opening of the electrode cap 300 to its deepest point, the inner diameter gradually decreases. These stepped surfaces form multiple mounting surfaces 340 on the inner wall of the electrode cap 300, and these mounting surfaces 340 match multiple mounting grooves 110. Preferably, the first mounting groove 111 matches the first mounting surface 341, and the second mounting groove 112 matches the second mounting surface 342.

[0082] In a preferred embodiment of the electrode sealing structure of this utility model, the inner wall of the electrode cap 300 is set as conical.

[0083] From the opening of the electrode cap 300 to its deepest point, the inner diameter of the conical inner wall of the electrode cap 300 gradually decreases, and the contact point between the conical surface of the inner wall of the electrode cap 300 and the O-ring must satisfy the above design formula.

[0084] See Figures 6-9 As a preferred embodiment of the electrode sealing structure of this utility model, the inner wall of the electrode cap 300 is provided with an venting groove 310 along the axial direction. Each O-ring 200 is provided with at least one venting groove 310. When the electrode cap 300 is completely fitted on the electrode rod 100, the axial position of the lower end 320 of the venting groove is higher than the sealing contact surface between the corresponding O-ring 200 and the inner wall of the electrode cap 300.

[0085] like Figure 7 and Figure 9 As shown, the exhaust groove 310 can discharge the gas inside the electrode cap 300 when the electrode cap 300 is not completely fitted onto the electrode rod 100. The exhaust direction is shown by arrows V1 and V2 in the figure.

[0086] See Figures 6-9 As a preferred embodiment of the electrode sealing structure of this utility model, the exhaust groove 310 includes a plurality of first exhaust grooves 311 and a plurality of second exhaust grooves 312. The O-rings 200 in the first assembly groove 111 are correspondingly configured with a plurality of first exhaust grooves 311, and the O-rings 200 in the second assembly groove 112 are correspondingly configured with a plurality of second exhaust grooves 312.

[0087] like Figure 6 The second venting groove 312 shown is used for venting the second O-ring 220, as... Figure 7 As shown, before the electrode cap 300 is fully assembled, at least one of the second venting slots 312 can also provide a venting structure for gas extrusion, with the venting direction as shown by arrow V1. When the electrode cap 300 is fully assembled, as shown... Figure 6As shown, the second O-ring 220 will pass over the second vent groove 312 to complete the seal. Similarly... Figure 8 The first venting groove 311 shown is used for venting the first O-ring 210, when... Figure 9 When the electrode cap 300 is not fully installed, the first venting groove 311 can provide a venting structure for gas extrusion, and the venting direction is as shown by arrow V2. After the electrode cap 300 is fully installed, as shown... Figure 8 As shown, the first O-ring 210 passes over the first exhaust groove 311 to complete the sealing.

[0088] See Figure 2 In a preferred embodiment of the electrode sealing structure of this utility model, the first exhaust groove 311 is located at a circumferential angle on the inner wall of the electrode cap 300, and the second exhaust groove 312 is located at a circumferential angle on the inner wall of the electrode cap 300.

[0089] Grooving on thin-walled parts will inevitably weaken their structural strength in some areas. However, the staggered arrangement of the first venting groove 311 and the second venting groove 312 disperses the areas with weaker structural strength to different circumferential positions, avoiding the creation of continuous weak links and preserving the overall strength and rigidity of the parts to the maximum extent.

[0090] See Figure 2 As a preferred embodiment of the electrode sealing structure of this utility model, the electrode cap 300 is provided with at least one protrusion 330, and the electrode rod 100 is provided with a groove 120 that matches the protrusion 330; when the electrode cap 300 is completely fitted onto the electrode rod 100, the protrusion 330 and the groove 120 are engaged and fixed.

[0091] The electrode cap 300 is fixed in the following way: Figure 2 As shown, at least one protrusion 330 on the electrode cap 300 forms an inverted connection with the matching slot 120 on the electrode rod 100 when the electrode cap 300 is fully inserted, thus ensuring the connection between the electrode cap 300 and the electrode rod 100.

[0092] Preferably, the electrode cap 300 is made of resin material, and the protrusion 330 can be formed by forcefully removing it from the mold. The principle is that the resin material of the electrode cap 300 has a certain deformation ability after being formed in the mold, so that even if there is an undercut structure in the mold, it can be forcibly removed from the mold through deformation.

[0093] As described above, the electrode sealing structure of this utility model is easier to install and requires less force compared to the traditional structure. It can also prevent various problems caused by trapped air compared to the traditional structure.

[0094] This invention also provides an electrode, which includes the electrode sealing structure described above.

[0095] The electrode can be an oDO electrode or other dissolved oxygen electrode.

[0096] The electrode sealing structure and electrode of this utility model are designed with multiple sealing barriers to meet the high sealing requirements of the electrode, which greatly improves the sealing reliability. At the same time, it provides two solutions to prevent air trapping in the electrode cap 300. One is to use structural design to compress the two O-rings 200 at the same time as much as possible. The other is to add an exhaust groove 310 to discharge the gas in the electrode cap 300 before it is fully installed. This makes the installation process of the electrode cap 300 easier and requires less force. It also avoids the defect that the electrode cap 300 is easy to fall off the electrode rod 100 due to the pressure of trapped air.

[0097] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. An electrode sealing structure, characterized in that, The electrode sealing structure includes an electrode rod, an O-ring, and an electrode cap; At least two annular mounting grooves are spaced apart along the axial direction on the rod of the electrode rod. The mounting grooves include a first mounting groove and a second mounting groove. The first mounting groove is closer to the lower end of the electrode rod than the second mounting groove. The number of O-rings is at least two, and each O-ring is nested in one of the assembly slots; The electrode cap is fitted over the outside of the electrode rod, and the inner wall of the electrode cap is in interference contact with the outer surface of all the O-rings to form at least two seals between the electrode rod and the electrode cap.

2. The electrode sealing structure as described in claim 1, characterized in that, The bottom diameter of the second assembly groove is greater than the bottom diameter of the first assembly groove; the inner diameter of the inner wall of the electrode cap at the position corresponding to the second assembly groove is greater than the inner diameter of the inner wall of the electrode cap at the position corresponding to the first assembly groove.

3. The electrode sealing structure as described in claim 1 or 2, characterized in that, The O-rings installed in the first and second assembly slots are made of the same material, and their inner diameter and wire diameter are the same in the free state.

4. The electrode sealing structure as described in claim 2, characterized in that, The design of the first assembly groove, the second assembly groove, and the inner wall of the electrode cap must satisfy the following formula: Wherein, a is the bottom diameter of the second assembly groove; b is the bottom diameter of the first assembly groove; c is the inner diameter of the inner wall of the electrode cap at the position corresponding to the second assembly groove; and d is the inner diameter of the inner wall of the electrode cap at the position corresponding to the first assembly groove.

5. The electrode sealing structure as described in claim 2, characterized in that, The inner wall of the electrode cap is stepped.

6. The electrode sealing structure as described in claim 2, characterized in that, The inner wall of the electrode cap is tapered.

7. The electrode sealing structure as described in claim 1, characterized in that, The inner wall of the electrode cap is provided with an axial venting groove. Each O-ring is provided with at least one venting groove. When the electrode cap is fully fitted on the electrode rod, the axial position of the lower end of the venting groove is higher than the sealing contact surface between the corresponding O-ring and the inner wall of the electrode cap.

8. The electrode sealing structure as described in claim 7, characterized in that, The exhaust groove includes multiple first exhaust grooves and multiple second exhaust grooves. The O-rings in the first assembly groove are configured with multiple first exhaust grooves, and the O-rings in the second assembly grooves are configured with multiple second exhaust grooves.

9. The electrode sealing structure as described in claim 8, characterized in that, The first exhaust groove is located at a circumferential angle on the inner wall of the electrode cap, and the second exhaust groove is located at a circumferential angle on the inner wall of the electrode cap.

10. The electrode sealing structure as described in claim 1, characterized in that, The electrode cap has at least one protrusion, and the electrode rod has a groove that matches the protrusion; when the electrode cap is fully fitted onto the electrode rod, the protrusion engages and is fixed in place with the groove.

11. An electrode, characterized in that, The electrode includes the electrode sealing structure as described in any one of claims 1-10.

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