Socket pipe
By introducing a wear-resistant liner and pressure measurement channel into the socket tube of the polycrystalline silicon reactor, the leakage problem caused by silicon powder corrosion was solved, the service life was extended and the equipment cost was reduced, and convenient liner replacement was achieved.
Patent Information
- Application Number
- CN202520715436.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-16
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-04-16
AI Technical Summary
The socket tubes of polycrystalline silicon reactors are easily corroded by silicon powder during long-term use, leading to leakage risks, affecting normal production operations, and resulting in a short service life.
A socket tube structure including an outer tube, an inner liner, a retaining ring, and a pressure testing interface was designed. The inner liner is made of wear-resistant material, and a gap is left in the inner wall of the outer tube to form a pressure testing channel. The integrity of the inner liner is detected by pressure testing. The inner liner and the outer tube are designed as separate units.
It extends the service life of the socket tube to more than two years, reduces equipment costs and maintenance expenses, and enables convenient timely replacement of the liner.
Smart Images
Figure CN223953629U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to polycrystal silicon cold hydrogenation technical field especially relates to a socket pipe. BACKGROUND
[0002] The polycrystal silicon reactor is the important equipment of polycrystal silicon cold hydrogenation device, and the running temperature of the polycrystal silicon reactor is high, and the flow rate of the silicon powder feeding is fast. The polycrystal silicon reactor includes a socket pipe, and the silicon powder is fed from the socket pipe. Long-term use can easily scour and corrode the inside of the socket pipe, and the risk of erosion leakage is generated. In the actual use process, the socket pipe will be eroded, thinned or leaked in about half a year, which seriously affects the normal production operation. UTILITARIAN CONTENT
[0003] In view of the above situation, the utility model provides a socket pipe, which aims to solve the problem that the silicon powder is fed from the socket pipe, and long-term use can easily scour and corrode the inside of the socket pipe, and the risk of erosion leakage is generated. In the actual use process, the socket pipe will be eroded, thinned or leaked in about half a year, which seriously affects the normal production operation.
[0004] To achieve the above purpose, the utility model provides the following technical scheme:
[0005] The utility model provides a socket pipe, which comprises:
[0006] The outer pipe is used for connecting the polycrystal silicon reactor and the silicon powder conveying pipeline;
[0007] The inner lining is detachably connected in the outer pipe;
[0008] The blocking ring is detachably connected with one end of the outer pipe, and is used for fastening the inner lining in the outer pipe;
[0009] The pressure measuring interface is arranged on the outer pipe;
[0010] Among them:
[0011] The inner lining is made of wear-resistant material;
[0012] The gap is left between the outer wall of the inner lining and the inner wall of the outer pipe to form a pressure measuring channel, and the pressure measuring channel can form a sealed space with a predetermined pressure; the pressure measuring interface is in communication with the pressure measuring channel.
[0013] In some embodiments of the utility model, the inner part of the outer pipe has a storage hole and a communication hole which are connected and through.
[0014] In some embodiments of the utility model, the diameter of the communication hole is smaller than the diameter of the storage hole, and a shoulder is formed at the junction of the storage hole and the communication hole.
[0015] In some embodiments of the utility model, the inner lining is connected in the storage hole.
[0016] In some embodiments of the present application, the outer wall of the inner liner is sleeved with a support sleeve.
[0017] In some embodiments of the present application, the plurality of support sleeves are spaced along the axial direction of the inner liner.
[0018] In some embodiments of the present application, a notch is left on the support sleeve.
[0019] In some embodiments of the present application, the inner liner is made of silicon nitride.
[0020] In some embodiments of the present application, the material of the retaining ring is hastelloy.
[0021] In some embodiments of the present application, the outer wall of the outer pipe has a wear-resistant outer layer.
[0022] The embodiments of the present application have at least the following advantages or beneficial effects:
[0023] 1. The wear-resistant inner liner is added, which reduces the cost of the equipment itself in essence on the premise of improving the service life of the socket pipe (from half a year to more than two years).
[0024] 2. The inner liner and the outer pipe are designed in a split type, only the inner liner needs to be replaced, and the entire socket pipe does not need to be replaced, thereby reducing the maintenance cost.
[0025] 3. The integrity of the inner liner is detected by pressure measurement, and the inner liner can be replaced in time.
[0026] Other features and advantages of the present application will be described in the following description, and some of them will become apparent from the description, or will be understood by those skilled in the art through implementation of the present application. BRIEF DESCRIPTION OF DRAWINGS
[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.
[0028] Figure 1 It is a structural schematic view of the socket pipe.
[0029] Figure legend: 1-outer pipe, 11-putting hole, 12-communication hole, 13-shoulder, 14-first flange, 15-second flange, 2-inner liner, 3-retaining ring, 4-pressure measurement interface, 5-pressure measurement channel, 6-support sleeve. DETAILED DESCRIPTION
[0030] In the following, only certain exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different manners without departing from the spirit or scope of the embodiments of the present application.
[0031] In the description of the embodiments of the present application, it should be understood that the orientation or positional relationship indicated by the terms "inner", "outer", "axial" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.
[0032] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.
[0033] In the embodiments of the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or detachably connected, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication or interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.
[0034] The embodiments of the present application will be described in detail below.
[0035] Embodiments
[0036] Referring to Figure 1 The present embodiment provides a socket pipe, which comprises an outer pipe 1, an inner liner 2, a retaining ring 3 and a pressure measuring interface 4.
[0037] The inner part of the outer tube 1 has a storage hole 11 and a communication hole 12. The storage hole 11, the communication hole 12 and the outer tube 1 are coaxially arranged, the diameter of the communication hole 12 is smaller than that of the storage hole 11, and a shoulder 13 is formed at the junction of the storage hole 11 and the communication hole 12. The outer wall of the outer tube 1 has a first flange 14 and a second flange 15, the first flange 14 is used to connect with the polysilicon reactor, and the second flange 15 is used to connect with the silicon powder conveying pipeline. After the outer tube 1 is connected with the polysilicon reactor, one end of the outer tube 1 extends into the polysilicon reactor. The outer wall of the outer tube 1 is sprayed with a nickel-based alloy material in a cold spraying manner to form a wear-resistant outer layer (not shown in the figure), so as to avoid wear of the outer wall of the outer tube 1.
[0038] The inner liner 2 is tubular, the inner liner 2 is connected with the communication hole 12, and the inner diameter of the inner liner 2 is consistent with that of the communication hole 12; the inner liner 2 is made of wear-resistant silicon nitride material, is detachably connected in the storage hole 11 of the outer tube 1, and a gap is left between the outer wall of the inner liner 2 and the inner wall of the storage hole 11 to form a pressure measuring channel 5.
[0039] In a specific implementation scenario, the gap between the outer wall of the inner liner 2 and the inner wall of the outer tube 1 is left to form the pressure measuring channel 5 in the following manner: a support sleeve 6 is sleeved on the outer wall of the inner liner 2, and a plurality of support sleeves 6 are distributed along the axial direction of the inner liner 2, the support sleeve 6 is in contact with the inner wall of the storage hole 11, that is, the inner liner 2 is positioned by the support sleeve 6. It can be understood that when a plurality of support sleeves 6 are distributed along the axial direction of the inner liner 2, each support sleeve 6 preferably does not separate the pressure measuring channel 5 into a plurality of independent spaces, for example, a notch can be left on the support sleeve 6, so that the detection data of the pressure measuring instrument can more accurately reflect the integrity of the whole inner liner 2.
[0040] The stop ring 3 is connected with the inner side of one end of the outer tube 1 in a detachable manner such as threaded connection, the stop ring 3 is used to fasten the inner liner 2 in the outer tube 1, and the pressure measuring channel 5 can form a sealed space with a predetermined pressure. The material of the stop ring 3 is hastelloy.
[0041] The pressure measuring interface 4 is arranged on the outer tube 1 and located between the first flange 14 and the second flange 15; the pressure measuring interface 4 is connected with the pressure measuring channel 5, and the pressure measuring interface 4 is used to connect a pressure measuring instrument for detecting the pressure change in the pressure measuring channel 5.
[0042] In use, the inner liner 2 and the outer tube 1 of the socket pipe are assembled first, then the outer tube 1 of the socket pipe is inserted into the polysilicon reactor, the outer tube 1 is fixed through the first flange 14, and the silicon powder conveying pipeline is connected through the second flange 15, thus completing the installation of the socket pipe; when the inner liner 2 pipeline is broken due to the erosion of silicon powder, the pressure measuring channel 5 is connected with the storage hole 11 in the outer tube 1, the predetermined pressure of the pressure measuring channel 5 is changed, the pressure measuring instrument connected with the pressure measuring interface 4 detects the pressure change, thus reflecting the leakage of the inner liner 2, that is, the integrity of the inner liner 2 is detected through pressure measurement, and the inner liner 2 can be replaced in time.
[0043] In addition, the embodiment has at least the following beneficial effects:
[0044] I. The wear-resistant inner liner 2 and the wear-resistant material sprayed on the outer wall of the outer tube 1 are added, the service life of the socket pipe is improved (from half a year to more than two years), and the cost of the equipment itself is essentially reduced.
[0045] II. The inner liner 2 and the outer tube 1 are designed in a split type, only the inner liner 2 needs to be replaced, and the entire socket pipe does not need to be replaced, so that the maintenance cost is low.
[0046] Finally, it should be noted that: the above is only a preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and variations, and the embodiments of the present application and the features in the embodiments can be arbitrarily combined with each other without conflict. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. A socketed tube, characterized by, The utility model relates to a kind of outer tube for connecting polysilicon reactor and silicon powder conveying pipeline;Tubular inner liner is detachably connected in the outer tube;Retainer ring is detachably connected with one end of the outer tube, for fastening the inner liner in the outer tube;Pressure measuring interface is arranged on the outer tube;Wherein: the inner liner adopts wear-resistant material;Gap is left between the outer wall of the inner liner and the inner wall of the outer tube to form pressure measuring channel, the pressure measuring channel can form airtight space with predetermined pressure;The pressure measuring interface is communicated with the pressure measuring channel. The inner tube has a storage hole and a communication hole connected thereto. The diameter of the communication hole is smaller than that of the storage hole, and a shoulder is formed at the junction of the storage hole and the communication hole. The inner liner is connected to the storage hole. A support sleeve is provided on the outer wall of the inner liner. Multiple support sleeves are distributed along the axial direction of the inner liner. Notches are provided on the support sleeves. The inner liner is made of silicon nitride.
2. The cannula of claim 1, wherein, The retainer ring is made of hastelloy.
3. The cannula of claim 2, wherein, The outer tube has a wear-resistant outer layer.
4. The cannula of claim 3, wherein, 5. The cannula of claim 3, wherein, 6. The cannula of claim 5, wherein, 7. The cannula of claim 5 or 6, wherein, 8. The cannula of claim 1, wherein, 9. The cannula of claim 1, wherein, 10. The cannula of claim 1, wherein,