Quartz rod melting temperature-control high-temperature furnace

Abstract

A quartz rod melting temperature control high-temperature furnace comprises a furnace body, a cover body is arranged at the top of the furnace body, a plurality of heating bodies are arranged in an inner cavity of the furnace body and extend downwards along the axis of the inner cavity of the furnace body, a mounting base is arranged on the furnace body, a temperature measuring sensor is arranged on the mounting base, and a probe of the temperature measuring sensor extends into the furnace body in the radial direction of the inner cavity of the furnace body. And the end of the probe is close to the center of the inner cavity of the furnace body. By adopting the structure, the temperatures of multiple points are timely detected, and the temperature of each position of the furnace body is accurately controlled; under the action of large current, the heating body rapidly emits light and heats and rapidly rises temperature, inert gas is introduced to protect components in the furnace, and dust removal and cooling effects are achieved; water cooling circulation is matched with a heat preservation structure, rapid cooling can be achieved, temperature can be kept, energy consumption can be reduced, and practicability is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to optical fiber production technical field especially quartz rod melting temperature control high temperature furnace. BACKGROUND

[0002] In the production process of optical fiber, quartz rods with a diameter of tens of millimeters or even dozens of millimeters need to be heated and melted at high temperature and kept within a certain temperature range, and in cooperation with a stable traction mechanism, the quartz rods are drawn into micron-level optical fiber filaments. The traditional high-temperature furnace is difficult to detect and stabilize the temperature control in time, although it can quickly heat up, but the temperature detection position is single, the furnace body structure is relatively simple, and there is a lack of more temperature control means, which has obvious defects in temperature control.

[0003] Therefore, there is an urgent need for a high-temperature furnace that can quickly heat up and timely detect and control temperature. SUMMARY

[0004] The utility model provides quartz rod melting temperature control high temperature furnace, and multi point temperature detects in time, can grasp the furnace temperature accurate heating, can detect the furnace shell temperature, avoids high temperature to hurt, can also detect the water cooling temperature control water cooling strength, under the action of large current, the heating body quickly emits light and heat and quickly heats up, and the inert gas is introduced, which can protect the components in the furnace and also play a certain dust removal and cooling role, and the water cooling circulation cooperates with the heat preservation structure, which can quickly cool down and also keep the temperature low and reduce energy consumption, and has high practicality.

[0005] To solve the above technical problems, the utility model adopts the technical scheme of a quartz rod melting temperature control high-temperature furnace, which comprises a furnace body, a cover body provided on the top of the furnace body, a plurality of heating bodies provided in the inner cavity of the furnace body, the heating bodies extending downward along the axis of the inner cavity of the furnace body, a mounting base provided on the furnace body, and a temperature sensor provided on the mounting base, the probe of the temperature sensor extending into the furnace body along the radial direction of the inner cavity of the furnace body, and the end of the probe being located near the center of the inner cavity of the furnace body.

[0006] In the preferred scheme, the temperature sensor is a platinum resistance temperature sensor.

[0007] In the preferred scheme, the end of the probe of the temperature sensor is located near the lower end of the heating body.

[0008] In the preferred scheme, the heating body is a resistance heating body.

[0009] In the preferred scheme, the center of the cover body is provided with a hole for feeding, the top of the cover body is provided with a feeding cover, the bottom of the cover body is connected with the heating body, and the heating body is electrically connected with the left electrode connecting plate and the right electrode connecting plate located on both sides of the cover body.

[0010] In the preferred solution, the cover is provided with an inert gas interface, which is communicated with the inner cavity of the furnace body.

[0011] In the preferred solution, the feeding cover is provided with an upper cooling water channel, which is communicated with the third water pipe.

[0012] The furnace body is provided with a furnace shell water cooling circulation channel, which is communicated with the first water pipe.

[0013] The furnace body is provided with a reduced structure at the bottom, and the bottom of the furnace body is connected with a discharge pipe, the inner diameter of the discharge pipe is smaller than that of the cavity of the furnace body, and a lower cooling water channel is arranged at the periphery of the discharge pipe, and the water cooling circulation channel is communicated with the second water pipe.

[0014] In the preferred solution, the first heat insulation member is arranged between the cover and the furnace body, the first heat insulation member is annular, and the left electrode connecting plate and the right electrode connecting plate pass through the first heat insulation member.

[0015] The second heat insulation member is arranged on the inner wall of the furnace body.

[0016] In the preferred solution, the bottom of the furnace body is further provided with a mounting seat, and a plurality of support adjusting seats are arranged between the mounting seat and the furnace body.

[0017] In the preferred solution, the outer wall of the furnace body is further provided with a periscope type observation mirror.

[0018] The periscope type observation mirror is arranged on the outer wall of the furnace body, and the periscope type observation mirror is connected with the eyepiece through the bent pipeline, and the position of the bent pipeline is provided with a mirror.

[0019] The mirror is a half-reflecting half-transmitting mirror, a temperature measuring grating is arranged on the back of the mirror, the temperature measuring grating is spirally distributed on the back of the mirror, the temperature measuring grating is a fiber sensor of a Bragg grating FBG, a plurality of temperature measuring gratings with different center wavelengths are connected in series on the same optical fiber, when light in the furnace body is incident on the series gratings, each Bragg grating reflects light with a specific wavelength, and the temperature at the position of each Bragg grating can be measured by detecting the drift of the reflected light wavelength, so that multi-point temperature measurement is realized.

[0020] The quartz rod melting temperature control high-temperature furnace provided by the utility model has the following beneficial effects by adopting the above structure:

[0021] (1) Multi-point temperature detection in time can accurately control the temperature rise in the furnace, detect the furnace shell temperature, avoid high-temperature injury, and detect the water cooling temperature to control the water cooling intensity.

[0022] (2) under the action of large current, the heating body rapidly emits light and heat, and rapidly heats up, and in cooperation with inert gas input, the components in the furnace can be protected, and a certain dust removal and cooling effect can be achieved;

[0023] (3) water cooling circulation cooperates with the heat preservation structure, which can rapidly cool down and can maintain the temperature and reduce the energy consumption, and has high practicability. BRIEF DESCRIPTION OF DRAWINGS

[0024] The utility model will be further described in connection with the drawings and embodiments:

[0025] Figure 1 It is the whole structure side view of the utility model.

[0026] Figure 2 It is the whole structure side view of the utility model.

[0027] Figure 3 It is the whole structure side view of the utility model.

[0028] Figure 4 It is the whole structure side view of the utility model.

[0029] In the drawing: furnace body 1, top cover 2, heating cover 3, feeding cover 4, inert gas passage 5, mounting position 6, temperature measuring sensor 7, left electrode connecting plate 8, right electrode connecting plate 9, support adjusting seat 10, mounting seat 11, discharge pipe 12, first water pipe 13, second water pipe 14, heating body 15, first heat insulation heat preservation piece 16, second heat insulation heat preservation piece 17, furnace shell water cooling circulation layer 18. DETAILED DESCRIPTION

[0030] As Figures 1-4 In the drawing: furnace body 1, top cover 2, heating cover 3, feeding cover 4, inert gas passage 5, mounting position 6, temperature measuring sensor 7, left electrode connecting plate 8, right electrode connecting plate 9, support adjusting seat 10, mounting seat 11, discharge pipe 12, first water pipe 13, second water pipe 14, heating body 15, first heat insulation heat preservation piece 16, second heat insulation heat preservation piece 17, furnace shell water cooling circulation layer 18.

[0031] In the preferred scheme, the temperature measuring sensor 7 is a platinum resistance temperature sensor.

[0032] In the preferred scheme, the end of the temperature measuring sensor 7 probe is located close to the lower end of the heating body 15.

[0033] In the preferred scheme, the heating body 15 is a resistance heating body 15.

[0034] In the preferred embodiment, the cover 2 is provided with a hole in the center for feeding, and a feeding cover 4 is arranged on the top of the cover 2, the bottom of the cover 2 is connected with the heating body 15, and the heating body 15 is electrically connected with the left electrode connecting plate 8 and the right electrode connecting plate 9 arranged on both sides of the cover 2.

[0035] In the preferred embodiment, the cover 2 is provided with an inert gas interface 3, which is communicated with the inner cavity of the furnace body 1.

[0036] In the preferred embodiment, the feeding cover 4 is provided with an upper cooling water channel 5, which is communicated with the third water pipe 20.

[0037] The outer periphery of the furnace body 1 is provided with a furnace shell water cooling circulation channel 18, which is communicated with the first water pipe 13.

[0038] The bottom of the furnace body 1 is provided with a structure with a reduced diameter, the bottom of the furnace body 1 is connected with the discharging pipe 12, the inner diameter of the discharging pipe 12 is smaller than the inner diameter of the cavity of the furnace body 1, and a lower cooling water channel is arranged on the outer periphery of the discharging pipe 12, and the water cooling circulation channel is communicated with the second water pipe 14.

[0039] In the preferred embodiment, the first heat insulation member 16 is arranged between the cover 2 and the furnace body 1, the first heat insulation member 16 is annular, and the left electrode connecting plate 8 and the right electrode connecting plate 9 pass through the first heat insulation member 16.

[0040] The inner wall of the furnace body 1 is provided with the second heat insulation member 17.

[0041] In the preferred embodiment, the bottom of the furnace body 1 is further provided with a mounting seat 11, and a plurality of support adjusting seats 10 are arranged between the mounting seat 11 and the furnace body 1.

[0042] In the preferred embodiment, the outer wall of the furnace body 1 is further provided with a periscope type observation mirror.

[0043] The periscope type observation mirror is arranged on the outer wall of the furnace body 1, and the observation window is connected with the eyepiece through a bent pipeline, and a reflecting mirror is arranged at the bent position of the pipeline.

[0044] The reflecting mirror is a half-reflecting and half-transmitting mirror sheet, a temperature measurement grating is arranged on the back of the reflecting mirror, the temperature measurement gratings are spirally distributed on the back of the reflecting mirror, the temperature measurement gratings are fiber sensors of Bragg gratings FBG, a plurality of temperature measurement gratings with different center wavelengths are connected in series on the same optical fiber, when light in the furnace body is incident on the series gratings, each Bragg grating reflects light with a specific wavelength, and the temperature at the position of each Bragg grating can be measured by detecting the drift of the reflected light wavelength, so that multi-point temperature measurement is realized.

[0045] The temperature measuring grating is a fiber sensor of a Bragg grating (FBG), a plurality of temperature measuring gratings with different center wavelengths are connected in series on the same optical fiber, when light in the furnace body is incident on the series gratings, each Bragg grating reflects light of a specific wavelength, by detecting the drift of the reflected light wavelength, the temperature at the position of each Bragg grating can be measured at the same time, so that multi-point temperature measurement is realized.

[0046] The use method of the utility model is:

[0047] Heating and feeding: the quartz rod is fed into the furnace body 1 through the feeding port at the top, and the heating body 15 at the bottom of the cover 3 is powered on through the left electrode connecting plate 8 and the right electrode connecting plate 9 to heat the inner cavity of the furnace body 1, so that the quartz rod is melted in a high-temperature environment, and the inert gas channel 5 provides inert gas into the furnace body 1 to protect the components in the furnace and also plays a certain dust removal and cooling role;

[0048] Heat insulation: in order to ensure that the heat is concentrated in the melting area and reduce heat loss, a plurality of heat insulation structures are designed inside the furnace body, including the first heat insulation member 16 and the second heat insulation member 17, which are respectively located at the top of the furnace body and the position close to the heating body in the inner cavity. These heat insulation members help to maintain the temperature stability in the furnace, thereby ensuring the efficiency and quality of the melting process;

[0049] Cooling system: the furnace shell water cooling circulation layer 18 is communicated with the first water pipe 13 and the second water pipe 14 to form a cooling circuit, which can effectively take away the heat absorbed by the outer wall of the furnace body, prevent the furnace body 1 from overheating, and at the same time ensure the safety of operation and the durability of the equipment.

[0050] Temperature monitoring: the temperature measuring sensor 7 in the installation position 6 has a plurality of temperature measuring points, which are distributed at different key positions such as the furnace shell, the heat insulation member and the melting area, to monitor and feed back the temperature information to the control system in real time, and ensure the temperature control accuracy in the melting process;

[0051] Discharging and supporting: the melted material can be discharged through the discharge pipe 12 at the bottom of the furnace body, and the whole furnace body is fixed on the mounting seat 11 by the supporting adjusting seat 10, which allows the height and horizontal position of the furnace body to be adjusted to ensure the stable operation of the equipment.

[0052] The utility model has the advantages of multi-point temperature detection, accurate temperature rise in the furnace, detection of furnace shell temperature to avoid high temperature injury, detection of water cooling temperature to control water cooling intensity, rapid heating of the heating body under the action of large current, protection of the components in the furnace and dust removal and cooling effect, water cooling circulation combined with the heat preservation structure, rapid cooling, temperature maintenance, energy saving and high practicability.

Claims

1. A quartz-rod melting temperature-controlled high-temperature furnace comprising a furnace body (1), characterized in that: The top of the furnace body (1) is provided with a cover body (2), a plurality of heating bodies (15) are arranged in the inner cavity of the furnace body (1), the heating bodies (15) extend downward along the axis of the inner cavity of the furnace body (1), a mounting base (6) is arranged on the furnace body (1), a temperature measuring sensor (7) is arranged on the mounting base (6), the probe of the temperature measuring sensor (7) extends into the furnace body (1) along the radial direction of the inner cavity of the furnace body (1), and the end of the probe is located at a position close to the center of the inner cavity of the furnace body (1).

2. The quartz-rod melting temperature-controlling high-temperature furnace according to claim 1, characterized by: The temperature measuring sensor (7) is a platinum resistance temperature sensor.

3. The quartz-rod melting temperature-controlling high-temperature furnace according to claim 1, characterized by: The end of the probe of the temperature measuring sensor (7) is located at a position close to the lower end of the heating body (15).

4. The quartz-rod melting temperature-controlling high-temperature furnace according to claim 1, characterized by: The heating body (15) is a resistance heating body (15).

5. The quartz-rod melting temperature-controlling high-temperature furnace according to claim 1, characterized by: The center of the cover body (2) is provided with a hole for feeding, a feeding cover (4) is arranged on the top of the cover body (2), the bottom of the cover body (2) is connected with the heating body (15), and the heating body (15) is electrically connected with the left electrode connecting plate (8) and the right electrode connecting plate (9) located on both sides of the cover body (2).

6. The quartz-rod melting temperature-controlling high-temperature furnace according to claim 5, characterized by: An inert gas interface (3) is arranged on the cover body (2) and communicates with the inner cavity of the furnace body (1).

7. The quartz-rod melting temperature-control high-temperature furnace according to claim 6, characterized by: The feeding cover (4) is provided with an upper cooling water channel (5) which communicates with the third water pipe (20); A furnace shell water cooling circulation channel (18) which communicates with the first water pipe (13) is arranged on the periphery of the furnace body (1); A reduced structure is arranged on the bottom of the furnace body (1), the bottom of the furnace body (1) is connected with a discharging pipe (12), the inner diameter of the discharging pipe (12) is smaller than the inner diameter of the cavity of the furnace body (1), a lower cooling water channel is arranged on the periphery of the discharging pipe (12), and the water cooling circulation channel communicates with the second water pipe (14).

8. The quartz-rod melting temperature-controlling high-temperature furnace according to claim 5, characterized by: A first heat insulation member (16) is arranged between the cover body (2) and the furnace body (1), the first heat insulation member (16) is annular, and the left electrode connecting plate (8) and the right electrode connecting plate (9) pass through the first heat insulation member (16); A second heat insulation member (17) is arranged on the inner wall of the furnace body (1).

9. The quartz-rod melting temperature-control high-temperature furnace according to claim 1, characterized by: The bottom of the furnace body (1) is further provided with a mounting seat (11), and a plurality of supporting adjusting seats (10) are arranged between the mounting seat (11) and the furnace body (1).

10. The quartz-rod melting temperature-control high-temperature furnace according to claim 1, characterized by: The outer wall of the furnace body (1) is further provided with a periscope type observation mirror. The periscope type observation mirror comprises an observation window arranged on the outer wall of the furnace body (1), a tube connected with an eyepiece, and a mirror arranged at the bending position of the tube. The mirror is a half-reflecting and half-transmitting mirror piece, a temperature measuring grating is arranged on the back of the mirror, the temperature measuring grating is spirally distributed on the back of the mirror, the temperature measuring grating is a fiber sensor of a Bragg grating, a plurality of temperature measuring gratings with different center wavelengths are connected in series on the same optical fiber, when light in the furnace body is incident on the series gratings, each Bragg grating reflects light with a corresponding wavelength, and the temperature at the positions of the Bragg gratings can be measured by detecting the drift of the reflected light wavelength, so that multi-point temperature measurement is realized.

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