A high temperature conductivity electrode

Abstract

The utility model provides a kind of high temperature conductivity electrode, it is related to polysilicon production technical field.The utility model includes outer electrode, stepped hole is set up in outer electrode, inner electrode is located in stepped hole, sealing sleeve is located between stepped hole and inner electrode, wherein, O-ring is equipped between the sealing sleeve and inner electrode, connecting assembly is equipped between the outer electrode of the upper portion of the sealing sleeve and inner electrode.The utility model provides good sealing performance, does not produce physical deformation to lead to sealing failure under high temperature and high pressure.

Description

Technical Field

[0001] This utility model relates to the field of polycrystalline silicon production technology, specifically to a high-temperature conductivity electrode. Background Technology

[0002] In the production process of polysilicon, steam is often used as the heat source for heating various materials. To ensure the cleanliness of the steam and prevent internal material leakage that could lead to dangerous accidents, an online conductivity meter is installed in the steam condensate pipeline for real-time monitoring.

[0003] In existing technologies, chemical production commonly uses steam at a pressure of 0.6 MPa and a temperature of around 160°C. Under prolonged high-temperature and high-pressure conditions, existing conductivity electrodes frequently experience material leakage, corrosion, and damage to the electrodes and conductivity processing components. In severe cases, they may even emit false signals, causing production process interruptions and resulting in significant losses. Damaged electrodes cannot be repaired, and most on-site operating conditions do not meet the requirements for online replacement. Replacement is only possible after the entire production unit is shut down, resulting in high maintenance and repair costs. Utility Model Content

[0004] The purpose of this invention is to develop a high-temperature conductivity electrode that provides good sealing performance and does not undergo physical deformation that leads to sealing failure under high temperature and high pressure conditions.

[0005] This utility model is achieved through the following technical solution:

[0006] A high-temperature conductivity electrode, comprising:

[0007] External electrode;

[0008] Step-shaped holes are formed inside the external electrode;

[0009] The internal electrode is located inside the stepped hole;

[0010] A sealing sleeve is provided between the stepped hole and the inner electrode;

[0011] An O-ring is provided between the sealing sleeve and the inner electrode, and a connecting component is provided between the outer electrode and the inner electrode on the upper part of the sealing sleeve.

[0012] Optionally, the stepped hole includes, from bottom to top, a first hole segment and a second hole segment that are coaxial and have gradually increasing inner diameters, and the inner electrode includes, from bottom to top, a first rod segment and a second rod segment that are coaxial and have gradually decreasing outer diameters.

[0013] Optionally, the upper part of the second rod segment is coaxially disposed within the first hole segment and the second hole segment, the lower part of the second rod segment and the first rod segment are located outside the outer electrode of the lower part of the first hole segment, and the connecting assembly is disposed within the second hole segment.

[0014] Optionally, the sealing sleeve is cylindrical, the inner diameter of the sealing sleeve is adapted to the outer diameter of the second rod section of the inner electrode, the outer wall of the sealing sleeve is stepped, and the sealing sleeve includes a coaxial first tube section and a second tube section from bottom to top. The outer diameter of the second tube section is adapted to the inner diameter of the first hole section of the outer electrode, and the second tube section fills the gap between the second rod section of the inner electrode and the first hole section of the outer electrode.

[0015] Optionally, the outer diameter of the first tube segment of the sealing sleeve is larger than the inner diameter of the first hole segment of the outer electrode. The first tube segment of the sealing sleeve is located below the first hole segment of the outer electrode. The stepped surface at the top of the first tube segment of the sealing sleeve is in contact with the bottom end face of the outer electrode, and the bottom end face of the first tube segment of the sealing sleeve is in contact with the stepped surface at the top of the first rod segment of the inner electrode.

[0016] Optionally, the O-ring is disposed between the inner wall of the second tube section of the sealing sleeve and the outer wall of the second rod section of the inner electrode, and the O-ring is made of rubber.

[0017] Optionally, the connecting assembly includes a sealing washer, a compression washer, and a locking nut, which are sleeved on the second rod section of the inner electrode and arranged sequentially from bottom to top. The bottom of the sealing washer contacts the stepped surface at the bottom of the second hole section of the outer electrode, and the locking nut is threaded to the outer wall of the second rod section of the inner electrode.

[0018] Optionally, the sealing gasket is made of PTFE, and the inner end face of the sealing gasket that contacts the second rod segment of the inner electrode has a sloping structure that gradually moves away from the inner electrode from top to bottom.

[0019] Optionally, the top of the second hole segment of the outer electrode is connected to a lead wire bonding pad, and the lead wire bonding pad is provided with a through hole for the second rod segment of the inner electrode to pass through.

[0020] Optionally, the lower end of the outer electrode is coaxially connected to an electrode sheath tube, and the bottom end of the inner electrode is located inside the electrode sheath tube.

[0021] The beneficial effects of this utility model are:

[0022] This utility model has an O-ring inside the sealing sleeve, which provides good sealing performance and ensures that no physical deformation occurs under high temperature and high pressure, thus preventing sealing failure. The double seal between the inner electrode and the outer electrode increases the resistance to high temperature deformation. The inner end face of the sealing gasket is designed with a slope structure, which can generate clamping stress on the outer wall of the inner electrode when a clamping force is applied, increasing the sealing capacity of the upper end of the inner electrode and preventing the medium from leaking along the outer wall of the inner electrode. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a structural diagram of the present utility model;

[0025] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0026] Reference numerals: 1. External electrode; 11. First hole segment; 12. Second hole segment; 13. Third hole segment; 14. Fourth hole segment; 2. Internal electrode; 21. First rod segment; 22. Second rod segment; 3. Sealing sleeve; 31. First tube segment; 32. Second tube segment; 4. Electrode sheath tube; 5. O-ring; 6. Connecting assembly; 61. Sealing washer; 62. Compression washer; 63. Locking nut; 7. Lead wire welding disc. Detailed Implementation

[0027] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0028] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention 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 this invention.

[0029] In this invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0031] like Figure 1 and Figure 2 As shown, this utility model discloses a high-temperature conductivity electrode, including an outer electrode 1 and an inner electrode 2. The outer electrode 1 has a stepped hole coaxially formed inside it, and the inner electrode 2 is coaxially disposed inside the stepped hole.

[0032] The stepped holes, from bottom to top, include a first hole section 11, a second hole section 12, a third hole section 13, and a fourth hole section 14, which are coaxial and have gradually increasing inner diameters. An electrode sheath tube 4 is coaxially connected to the lower end of the outer electrode 1, and the electrode sheath tube 4 is connected to the end face of the outer electrode 1 outside the first hole section 11.

[0033] The inner electrode 2 consists of a first rod segment 21 and a second rod segment 22, which are coaxial and have gradually decreasing outer diameters, from bottom to top. The outer diameter of the second rod segment 22 is smaller than that of the first hole segment 11. Most of the second rod segment 22 is located inside the first hole segment 11 and the second hole segment 12, while a small portion of the second rod segment 22 and the first rod segment 21 are located inside the electrode sheath tube 4 outside the first hole segment 11.

[0034] A sealing sleeve 3 is provided between the inner electrode 2 and the outer electrode 1. The sealing sleeve 3 is cylindrical, and the inner diameter of the sealing sleeve 3 is adapted to the outer diameter of the second rod segment 22 of the inner electrode 2.

[0035] The outer wall of the sealing sleeve 3 is stepped. The sealing sleeve 3 includes a coaxial first tube section 31 and a second tube section 32 from bottom to top. The outer diameter of the second tube section 32 is adapted to the inner diameter of the first hole section 11 of the outer electrode 1. The second tube section 32 fills the gap between the second rod section 22 of the inner electrode 2 and the first hole section 11 of the outer electrode 1. An O-ring 5 is provided between the inner wall of the second tube section 32 of the sealing sleeve 3 and the outer wall of the second rod section 22 of the inner electrode 2. The O-ring 5 is made of rubber.

[0036] The outer diameter of the first tube section 31 of the sealing sleeve 3 is larger than the inner diameter of the first hole section 11 of the outer electrode 1. The first tube section 31 of the sealing sleeve 3 is located below the first hole section 11 of the outer electrode 1. The stepped surface at the top of the first tube section 31 of the sealing sleeve 3 is in contact with the bottom end face of the outer electrode 1. The bottom end face of the first tube section 31 of the sealing sleeve 3 is in contact with the stepped surface at the top of the first rod section 21 of the inner electrode 2.

[0037] The second hole section 12 of the outer electrode 1 is provided with a connecting component 6 that connects to the second rod section 22 of the inner electrode 2, so that the inner electrode 2 is fixed inside the outer electrode 1 through the connecting component 6.

[0038] The connecting component 6 includes a sealing gasket 61 sleeved on the outer wall of the second rod segment 22 of the inner electrode 2. The sealing gasket 61 is made of PTFE (polytetrafluoroethylene). The outer diameter of the sealing gasket 61 is adapted to the inner diameter of the second hole segment 12 of the outer electrode 1. The bottom of the sealing gasket 61 contacts the stepped surface at the bottom of the second hole segment 12 of the outer electrode 1. The inner end face of the sealing gasket 61 that contacts the second rod segment 22 of the inner electrode 2 is a slope structure that gradually moves away from the inner electrode 2 from top to bottom.

[0039] A compression washer 62 is fitted on the outer wall of the second rod section 22 of the inner electrode 2 above the sealing washer 61. The inner diameter of the compression washer 62 is adapted to the outer diameter of the second rod section 22 of the inner electrode 2.

[0040] A locking nut 63 is provided on the outer wall of the second rod section 22 of the inner electrode 2 above the compression washer 62, and the locking nut 63 is threadedly connected to the outer wall of the second rod section 22 of the inner electrode 2.

[0041] The third hole section 13 of the outer electrode 1 is provided with a lead wire welding disk 7, which is connected to the bottom step surface of the third hole section 13. The lead wire welding disk 7 is provided with a through hole for the second rod section 22 of the inner electrode 2 to pass through, and the inner diameter of the through hole is larger than the outer diameter of the second rod section 22 of the inner electrode 2.

[0042] The sealing sleeve 3 of this utility model is provided with an O-ring 5, which provides good sealing performance and ensures that no physical deformation occurs under high temperature and high pressure, thus preventing sealing failure. The double seal between the inner electrode 2 and the outer electrode 1 increases the resistance to high temperature deformation. The inner end face of the sealing gasket 61 is designed with a slope structure, which can generate clamping stress on the outer wall of the inner electrode 2 when a clamping force is applied, increasing the sealing capacity of the upper end of the inner electrode 2 and preventing the medium from leaking along the outer wall of the inner electrode 2.

[0043] The above embodiments are merely preferred embodiments of this utility model and are not intended to limit the technical solutions of this utility model. Any technical solution that can be implemented based on the above embodiments without creative effort should be considered to fall within the scope of protection of this utility model patent.

Claims

1. A high-temperature conductivity electrode, characterized in that, include: External electrode; Step-shaped holes are formed inside the external electrode; The internal electrode is located inside the stepped hole; A sealing sleeve is provided between the stepped hole and the inner electrode; An O-ring is provided between the sealing sleeve and the inner electrode, and a connecting component is provided between the outer electrode and the inner electrode on the upper part of the sealing sleeve.

2. The high-temperature conductivity electrode according to claim 1, characterized in that, The stepped holes, from bottom to top, include a first hole segment and a second hole segment that are coaxial and have gradually increasing inner diameters. The inner electrode, from bottom to top, includes a first rod segment and a second rod segment that are coaxial and have gradually decreasing outer diameters.

3. The high-temperature conductivity electrode according to claim 2, characterized in that, The upper part of the second rod segment is coaxially disposed within the first hole segment and the second hole segment, the lower part of the second rod segment and the first rod segment are located outside the outer electrode of the lower part of the first hole segment, and the connecting assembly is disposed within the second hole segment.

4. The high-temperature conductivity electrode according to claim 3, characterized in that, The sealing sleeve is cylindrical, and its inner diameter is adapted to the outer diameter of the second rod section of the inner electrode. The outer wall of the sealing sleeve is stepped. The sealing sleeve includes a coaxial first tube section and a second tube section from bottom to top. The outer diameter of the second tube section is adapted to the inner diameter of the first hole section of the outer electrode. The second tube section fills the gap between the second rod section of the inner electrode and the first hole section of the outer electrode.

5. The high-temperature conductivity electrode according to claim 4, characterized in that, The outer diameter of the first section of the sealing sleeve is larger than the inner diameter of the first hole section of the outer electrode. The first section of the sealing sleeve is located below the first hole section of the outer electrode. The stepped surface at the top of the first section of the sealing sleeve is in contact with the bottom end face of the outer electrode. The bottom end face of the first section of the sealing sleeve is in contact with the stepped surface at the top of the first rod section of the inner electrode.

6. The high-temperature conductivity electrode according to claim 5, characterized in that, The O-ring is located between the inner wall of the second tube section of the sealing sleeve and the outer wall of the second rod section of the inner electrode, and the O-ring is made of rubber.

7. The high-temperature conductivity electrode according to claim 3, characterized in that, The connecting assembly includes a sealing washer, a compression washer, and a locking nut, which are sleeved on the second rod section of the inner electrode and arranged sequentially from bottom to top. The bottom of the sealing washer contacts the stepped surface at the bottom of the second hole section of the outer electrode, and the locking nut is threaded to the outer wall of the second rod section of the inner electrode.

8. The high-temperature conductivity electrode according to claim 7, characterized in that, The sealing gasket is made of PTFE, and the inner end face of the sealing gasket that contacts the second rod segment of the inner electrode has a sloping structure that gradually moves away from the inner electrode from top to bottom.

9. The high-temperature conductivity electrode according to claim 3, characterized in that, The top of the second hole section of the outer electrode is connected to a lead wire bonding pad, and the lead wire bonding pad is provided with a through hole for the second rod section of the inner electrode to pass through.

10. The high-temperature conductivity electrode according to claim 1, characterized in that, The lower end of the outer electrode is coaxially connected to an electrode sheath tube, and the bottom end of the inner electrode is located inside the electrode sheath tube.

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