Silica powder blanking socket pipe
By setting up fixing components and detection mechanisms in the silicon powder decal tube, the reactor wear and leakage caused by the fall of the inner tube is solved, and safety and maintenance efficiency are improved.
Patent Information
- Application Number
- CN202422202919.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-09
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-09-09
AI Technical Summary
The existing silicon powder feeding tubes are worn and leaked due to the fall of the inner tube during the polysilicon production process, which has high risk and difficulty in repairing, which consumes time and costs a lot.
A silicon powder feeding tube is designed, and timely detection and prevention of the fall of the inner tube by setting a fixed assembly and detection mechanism between the inner tube and the outer tube, including a thermocouple temperature core and a temperature transmitter.
It improves the fixing effect of the inner pipe and the outer pipe, and can promptly detect the fall off of the inner pipe, avoid reactor wear and leakage, reduces safety risks and reduces maintenance time and costs.
Smart Images
Figure CN223162482U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of polysilicon, and particularly relates to a silicon powder feeding and receiving pipe. Background Art
[0002] In the production process of polysilicon, the cold hydrogenation fluidized bed reactor belongs to high-temperature and high-pressure equipment. During operation, the medium contains multi-component gases and solids, the operating temperature reaches 540 °C, and the pressure reaches 2.65 MPa.
[0003] In the prior art, silicon powder needs to enter the reactor for reaction. When the receiving pipe for feeding is transporting silicon powder, the inside of the receiving pipe is worn by the moving silicon powder, and when the reactor is undergoing a fluidization reaction, the outer wall of the receiving pipe is also worn.
[0004] Currently, in order to cope with internal and external wear, the receiving pipe includes an outer pipe and an inner pipe bonded by high-temperature glue. However, after the high-temperature glue loses its activity, the inner pipe will immediately fall off. After falling off, the inner pipe is inside the reactor, blocking the nozzles inside the reactor, resulting in a change in the flow direction of the medium at the nozzles. The irregular air flow scours the inner wall of the reactor, causing the reactor to wear and perforate and leak. The high-temperature and high-pressure hydrogen comes into direct contact with the air and immediately catches fire, and in severe cases, there will be an explosion, which is extremely harmful. Moreover, the repair of the reactor after leakage is a confined space operation and also a high-altitude operation, and the operation time takes about 10 days, with a cost of about 210,000 yuan. It takes a long time and costs a lot, seriously affecting production operation. Summary of the Utility Model
[0005] The purpose of the utility model is to develop a silicon powder feeding and receiving pipe that can firmly fix the inner pipe and the outer pipe and can timely detect the falling-off situation of the inner pipe for maintenance.
[0006] The utility model is realized through the following technical solutions:
[0007] A silicon powder feeding and receiving pipe, comprising:
[0008] A socket;
[0009] An outer pipe, arranged at the bottom of the socket;
[0010] An inner pipe, coaxially arranged inside the outer pipe and connected to the socket;
[0011] A plurality of fixing components, arranged between the inner pipe and the outer pipe;
[0012] A detection mechanism, arranged between the inner pipe and the outer pipe;
[0013] Wherein, the detection mechanism includes at least two thermocouple temperature cores arranged between the inner pipe and the outer pipe, and a temperature transmitter connected to the thermocouple temperature cores is arranged on the socket.
[0014] Optionally, a plurality of outer grooves and inner grooves for accommodating a plurality of thermocouple temperature cores are respectively provided at corresponding positions on the inner wall of the outer tube and the outer wall of the inner tube, and the cross-sections of the outer grooves and the inner grooves are in an arc shape adapted to the thermocouple temperature core.
[0015] Optionally, the outer grooves on the inner wall of the outer tube extend upward to the top end of the outer tube, and a continuous groove connecting to the outer groove is correspondingly provided in the top socket of the outer tube. The inner grooves on the outer wall of the inner tube extend upward into the socket and cooperate with the continuous groove, and the top positions of the inner grooves and the continuous groove correspond to the temperature transmitter.
[0016] Optionally, a guiding hole for the thermocouple temperature core to pass through and connect to the temperature transmitter is provided in the socket at the top ends of the inner groove and the continuous groove.
[0017] Optionally, the bottom end of the inner tube is higher than the bottom end of the outer tube, and a fixing retaining ring with an inner diameter adapted to the inner diameter of the inner tube is connected to the inner wall at the bottom end of the outer tube, and the top of the fixing retaining ring is connected to the bottom end of the inner tube.
[0018] Optionally, a plurality of the fixing components are arranged at equal intervals in the axial direction of the outer tube and the inner tube.
[0019] Optionally, the fixing component includes a plurality of fixing bolts bolted to the outer tube and the inner tube. The plurality of fixing bolts are arranged at equal intervals in the circumferential direction of the outer tube, and the plurality of fixing bolts are all arranged along the radial direction of the outer tube and the inner tube.
[0020] Optionally, a plurality of inner screw holes corresponding to the positions of the plurality of fixing bolts are provided on the outer wall of the inner tube, and outer screw holes for cooperating with the fixing bolts are respectively provided through the outer tube on the outside of the plurality of inner screw holes. The outer end of the outer screw hole is a flared structure for accommodating the head of the fixing bolt.
[0021] Optionally, the outer wall of the inner tube and the inner wall of the outer tube are bonded with a high-temperature adhesive, and the temperature transmitter is flange-connected to the socket.
[0022] Optionally, the outer tube is made of a metal material, and the inner tube is made of a silicon carbide material.
[0023] The beneficial effects of the present utility model are as follows:
[0024] The fixing retaining ring and the fixing components provided in the present utility model improve the fixing effect between the inner tube and the outer tube, and prevent the inner tube from easily falling off from the outer tube. When the inner tube falls off, the thermocouple temperature core is exposed and the temperature changes, so that the falling-off situation of the inner tube can be detected in time, and the operator can handle it in time to avoid serious consequences. Description of the Drawings
[0025] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings required in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.
[0026] Figure 1 Structural diagram of the present utility model;
[0027] Figure 2 For Figure 1 side view;
[0028] Figure 3 Cross-sectional structural diagram of the inner tube and the outer tube.
[0029] Reference numerals: 1, socket; 2, inner tube; 3, outer tube; 4, thermocouple temperature core; 5, fixed retaining ring; 6, temperature transmitter; 7, fixing bolt; 8, external screw hole; 9, internal screw hole; 10, external groove; 11, internal groove. Detailed implementation manners
[0030] In the following, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present invention. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.
[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.
[0032] The following will detail the embodiments of the present utility model with reference to the accompanying drawings.
[0033] Such as Figures 1 to 3As shown in the figure, the utility model discloses a silicon powder feeding socket pipe, which includes a socket 1. At the bottom of the socket 1, an inner pipe 2 and an outer pipe 3 are coaxially arranged. The outer pipe 3 is on the outside and is made of metal material. The inner pipe 2 is on the inside and is made of silicon carbide material. The outer wall of the inner pipe 2 and the inner wall of the outer pipe 3 are bonded with high-temperature glue. A detection mechanism is arranged between the inner pipe 2 and the outer pipe 3 to detect whether the inner pipe 2 falls off.
[0034] The top end of the outer pipe 3 is connected to the bottom of the socket 1. The inner pipe 2 extends into the socket 1 and is connected thereto and penetrates through the socket 1. The bottom end of the inner pipe 2 is higher than the bottom end of the outer pipe 3. A fixing retaining ring 5 with an inner diameter adapted to the inner diameter of the inner pipe 2 is connected to the inner wall of the bottom end of the outer pipe 3. The top of the fixing retaining ring 5 is connected to the bottom end of the inner pipe 2. The fixing retaining ring 5 realizes the auxiliary fixation of the inner pipe 2 to prevent it from falling off.
[0035] Multiple groups of fixing components are arranged between the outer pipe 3 and the inner pipe 2. The multiple groups of fixing components are arranged at equal intervals in the axial direction of the outer pipe 3 and the inner pipe 2. The fixing component includes three fixing bolts 7. The three fixing bolts 7 are arranged at equal intervals in the circumferential direction of the outer pipe 3. The three fixing bolts 7 are all arranged along the radial direction of the outer pipe 3 and the inner pipe 2. Three inner screw holes 9 corresponding to the positions of the three fixing bolts 7 are arranged on the outer wall of the inner pipe 2. Outer screw holes 8 matching the fixing bolts 7 are respectively penetrated through the outer pipe 3 outside the three inner screw holes 9. The outer end of the outer screw hole 8 is of a flared structure to accommodate the head of the fixing bolt 7 to enter, so as to prevent the head of the fixing bolt 7 from protruding out of the outer wall of the outer pipe 3 and affecting the use of the socket pipe.
[0036] The detection mechanism includes two thermocouple temperature cores 4 with leak-proof technology arranged between the outer pipe 3 and the inner pipe 2. The diameter of the thermocouple temperature core 4 is 3 mm. A temperature transmitter 6 is flange-connected to the socket 1. The two thermocouple temperature cores 4 are connected to the temperature transmitter 6. The two thermocouple temperature cores 4 are arranged parallel to the axial direction of the outer pipe 3 and the inner pipe 2 outside the inner pipe 2. The bottom ends of the two thermocouple temperature cores 4 extend to a position close to the bottom end of the inner pipe 2.
[0037] Two outer grooves 10 and two inner grooves 11 for accommodating the two thermocouple temperature cores 4 are respectively arranged at corresponding positions on the inner wall of the outer pipe 3 and the outer wall of the inner pipe 2. The cross-sections of the outer grooves 10 and the inner grooves 11 are in an arc shape adapted to the thermocouple temperature core 4. The outer grooves 10 on the inner wall of the outer pipe 3 extend upward to the top end of the outer pipe 3. A continuous groove continuing the outer groove 10 is correspondingly arranged in the socket 1 at the top of the outer pipe 3. The inner grooves 11 on the outer wall of the inner pipe 2 extend upward into the socket 1 and cooperate with the continuous groove. The top positions of the inner grooves 11 and the continuous groove correspond to the temperature transmitter 6. A guiding hole for the thermocouple temperature core 4 to pass through and be connected to the temperature transmitter 6 is arranged in the socket 1 at the top of the inner grooves 11 and the continuous groove. The guiding hole guides the insertion of the thermocouple temperature core 4 between the inner pipe 2 and the outer pipe 3.
[0038] The fixed retaining ring 5 and the fixing assembly provided by the utility model improve the fixing effect between the inner tube 2 and the outer tube 3, avoiding the easy detachment of the inner tube 2 from the outer tube 3. When the inner tube 2 detaches, the thermocouple temperature core 4 is exposed and the temperature changes, so as to detect the detachment of the inner tube 2 in time, and the operator can deal with it in time to avoid serious consequences.
[0039] The above embodiments are only the preferred embodiments of the utility model, and do not limit the technical solutions of the utility model. Any technical solutions that can be achieved on the basis of the above embodiments without creative labor shall be regarded as falling within the scope of the patent rights of the utility model.
Claims
1. A silicon powder blanking bell-and-spigot pipe, characterized in that: Comprising: A socket; An outer tube provided at the bottom of the socket; An inner tube coaxially provided inside the outer tube and connected to the socket; A plurality of fixing components provided between the inner tube and the outer tube; A detection mechanism provided between the inner tube and the outer tube; Wherein, the detection mechanism includes at least two thermocouple temperature cores provided between the inner tube and the outer tube, and a temperature transmitter connected to the thermocouple temperature cores is provided on the socket.
2. The silicon powder feeding and receiving pipe according to claim 1, characterized in that, Corresponding positions on the inner wall of the outer tube and the outer wall of the inner tube are respectively provided with a plurality of outer grooves and inner grooves for accommodating a plurality of thermocouple temperature cores, and the cross-sections of the outer grooves and the inner grooves are in an arc shape adapted to the thermocouple temperature cores.
3. The silicon powder blanking bell-and-spigot pipe according to claim 2, characterized in that: The outer grooves on the inner wall of the outer tube extend upward to the top of the outer tube, and a continuous groove connecting to the outer grooves is correspondingly provided in the socket at the top of the outer tube. The inner grooves on the outer wall of the inner tube extend upward into the socket and cooperate with the continuous groove. The top positions of the inner grooves and the continuous groove correspond to the temperature transmitter.
4. The silicon powder blanking bell-and-spigot pipe according to claim 3, characterized in that: A guiding hole through which the thermocouple temperature core passes to be connected to the temperature transmitter is provided in the socket at the top of the inner groove and the continuous groove.
5. The silicon powder blanking bell-and-spigot pipe according to claim 1, characterized in that: The bottom end of the inner tube is higher than the bottom end of the outer tube. A fixing retaining ring with an inner diameter adapted to the inner diameter of the inner tube is connected to the inner wall at the bottom end of the outer tube, and the top of the fixing retaining ring is connected to the bottom end of the inner tube.
6. The silicon powder feeding and receiving pipe according to claim 1, wherein The plurality of fixing components are arranged at equal intervals in the axial direction of the outer tube and the inner tube.
7. The silicon powder blanking bell-and-spigot pipe according to claim 6, characterized in that: The fixing component includes a plurality of fixing bolts bolted to the outer tube and the inner tube. The plurality of fixing bolts are arranged at equal intervals in the circumferential direction of the outer tube, and the plurality of fixing bolts are all arranged along the radial direction of the outer tube and the inner tube.
8. The silicon powder feeding and receiving pipe according to claim 7, wherein A plurality of inner screw holes corresponding to the positions of the plurality of fixing bolts are provided on the outer wall of the inner tube. Through holes for cooperating with the fixing bolts are respectively provided through the outer tube on the outer sides of the plurality of inner screw holes, and the outer ends of the through holes are in a flared structure for accommodating the heads of the fixing bolts.
9. The silicon powder feeding and receiving pipe according to any one of claims 1 to 8, characterized in that The outer wall of the inner tube and the inner wall of the outer tube are bonded with high-temperature glue, and the temperature transmitter is flange-connected to the socket.
10. The silicon powder feeding and receiving pipe according to any one of claims 1 to 8, characterized in that, The outer tube is made of a metal material, and the inner tube is made of a silicon carbide material.