CN216711930U - Waste gas treatment system for optical fiber perform OVD deposition - Google Patents
Waste gas treatment system for optical fiber perform OVD deposition Download PDFInfo
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- CN216711930U CN216711930U CN202122800557.1U CN202122800557U CN216711930U CN 216711930 U CN216711930 U CN 216711930U CN 202122800557 U CN202122800557 U CN 202122800557U CN 216711930 U CN216711930 U CN 216711930U
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Abstract
The utility model discloses a waste gas treatment system for OVD (optical fiber preform deposition), which comprises a waste gas treatment device (5), a waste gas main pipeline (4), an air valve actuating mechanism (2) and a bypass pipeline (11) provided with a heat converter (13), wherein the heat converter (13) is connected with a waste heat recovery mechanism (16) through a first waste heat circulating pipe (17), the waste heat recovery mechanism (16) is connected with a waste heat collector (18) through a second waste heat circulating pipe (19), the waste heat recovery mechanism (16), the waste heat collector (18), a pressure gauge (12) and a bypass electric valve (10) on the bypass pipeline (11), a pressure difference sensor (14) and/or a temperature sensor (15) on the waste gas main pipeline (4) and the air valve actuating mechanism (2) are respectively connected with a waste heat control system through lines. The OVD deposition device can run stably, has optimized effect, and is more energy-saving and environment-friendly.
Description
Technical Field
The utility model relates to the technical field of optical fiber perform OVD deposition, in particular to a waste gas treatment system for optical fiber perform OVD deposition.
Background
In the operation process of the optical fiber perform OVD system, the waste gas treatment device plays a key role in the aspects of performance stability, deposition efficiency improvement, running cost reduction and the like of the optical fiber perform system, the good waste gas treatment effect can ensure the running stability, the lower running cost and the like of the optical fiber perform OVD system, and the good waste gas treatment device can enable the energy-saving effect to have market competitiveness and the like.
As shown in fig. 1, a plurality of groups of exhaust pipes 3 with air valve actuators 2 are installed on an OVD deposition device 1, an electric valve is configured on the air valve actuators 2, and the exhaust pipes 3 share a main exhaust gas pipe 4 and are communicated with an exhaust gas treatment device 5. In order to perform pressure stabilization or warming preheating control on the waste gas, a bypass control device with an electric heater is additionally arranged on a main waste gas pipeline 4 at present, a flange butterfly valve 7 is arranged at the joint of the bypass control device and the main waste gas pipeline 4, and a first electric valve 6 and a second electric valve 8 are respectively arranged on the main waste gas pipeline 4 at two sides of the joint; the bypass control device comprises a bypass pipeline 11 with a bypass electric valve 10 at the outlet, and a pressure gauge 12, a heat converter 13 and an exhaust fan 9 provided with a control valve are sequentially arranged on the bypass pipeline 11. When the waste gas treatment system with the bypass control device is used, once the air pressure of the main waste gas pipeline 4 is unstable, cold air extracted and purified by the exhaust fan 9 in a purification workshop is heated by the heat converter 13 through the electric heater and then is conveyed to the main waste gas pipeline 4 along the bypass pipeline 11, so that measures such as pressure stabilization, heating preheating control and the like are carried out.
Although the waste gas treatment system shown in fig. 1 solves the problem of fluctuation of wind pressure, in the actual operation process, it is found that the electric power consumption is increased and the equipment failure rate is increased due to the adoption of the electric heater, so that the operation cost and the equipment maintenance cost are greatly increased, the labor intensity is increased, and the safety risk is improved during high-altitude operation; on the other hand, because the cold air after the exhaust fan 9 extracts and purifies, the air conditioning system in the workshop purification area is in a negative pressure state, can produce a lot of dust, pollute product quality such as optical fiber perform rod serious quality problems, may lead to serious consequences such as unable production even. Therefore, the technology needs further improvement because the technology is not energy-saving and environment-friendly, consumes the cold source of the air conditioning system and is not economical.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems in the prior art and provides an exhaust gas treatment system for OVD deposition of an optical fiber preform.
The utility model aims to solve the problems by the following technical scheme:
the utility model provides a waste gas treatment system for optical fiber perform OVD deposits, includes exhaust treatment device, waste gas trunk line, blast gate actuating mechanism, sets up the bypass pipeline of heat converter, its characterized in that: the heat converter is connected with the waste heat recovery mechanism through the first waste heat circulating pipe, the waste heat recovery mechanism is connected with the waste heat collector through the second waste heat circulating pipe, the waste heat recovery mechanism and the waste heat collector are respectively connected with the waste heat control system through lines, and the waste heat control system is respectively connected with a pressure gauge and a bypass electric valve on the bypass pipeline, and a pressure difference sensor and/or a temperature sensor and an air valve execution mechanism which are/is arranged on a waste gas main pipeline through lines.
The differential pressure sensor and/or the temperature sensor are arranged on the inlet side of the main exhaust gas pipeline.
The differential pressure sensor and/or the temperature sensor are/is arranged on the main exhaust gas pipeline between the bypass pipeline and the first electric valve.
The error between the real-time pressure value transmitted to the waste heat control system by the differential pressure sensor and the pressure reference value range in the waste heat control system is not more than +/-15 Pa.
The error between the real-time temperature value transmitted to the waste heat control system by the temperature sensor and the temperature reference value range in the waste heat control system is not more than +/-3.25 ℃.
The heat converter adopts a gas-liquid heat exchanger or a gas-gas heat exchanger.
The waste heat collector is connected with a waste heat discharge port of the air compressor/dryer through an air compression/drying waste heat collecting pipe.
The waste heat collector is connected with a waste heat discharge port of the cooling tower through a waste heat collecting pipe of the cooling tower.
Compared with the prior art, the utility model has the following advantages:
the waste gas treatment system of the utility model cancels an electric heater, thus reducing the power consumption, the equipment operation and maintenance cost, the safety risk of personnel maintenance and the like; the waste heat collector effectively collects and recycles the waste heat energy in the power system, reduces the power consumption and the consumption of a cold source of an air conditioner, realizes that the waste heat of the waste gas is not directly discharged into the atmosphere but recycled, realizes the recycling of green and environmental protection, and simultaneously improves the quality of an OVD product; through pressure and/or temperature control and PID closed-loop adjustment of an air valve actuating mechanism, the OVD deposition device can operate stably, has optimized effect and is more energy-saving and environment-friendly.
Drawings
FIG. 1 is a schematic diagram of a prior art exhaust treatment system for OVD deposition of an optical fiber preform;
FIG. 2 is a schematic diagram of an exhaust gas treatment system for OVD deposition of an optical fiber preform according to the present invention;
FIG. 3 is a control schematic diagram of the waste heat control system of the present invention.
Wherein: 1-an OVD deposition apparatus; 2-air valve actuating mechanism; 3-an air draft pipeline; 4-main exhaust gas pipeline; 5-an exhaust gas treatment device; 6-first electric valve; 7-flange butterfly valve; 8-second electrically operated valve; 9-an exhaust fan; 10-bypass electric valve; 11-a bypass line; 12-a pressure gauge; 13-a heat converter; 14-differential pressure sensor; 15-temperature sensor; 16-a waste heat recovery mechanism; 17-a first waste heat recycling pipe; 18-a waste heat collector; 19-a second waste heat recycling pipe; 21-a cooling tower waste heat collecting pipe; 20-a cooling tower; 22-air compressor/dryer; 23-air pressure/drying residual heat collecting pipe.
Detailed Description
The utility model is further described with reference to the following figures and examples.
As shown in fig. 2-3: a waste gas treatment system for OVD deposition of an optical fiber perform comprises a plurality of groups of exhaust pipelines 3 with air valve actuating mechanisms 2, a waste gas treatment device 5, a waste gas main pipeline 4 and a bypass pipeline 11 with a heat converter 13, wherein the exhaust pipelines 3 are arranged on an OVD deposition device 1, the exhaust pipelines 4 share one waste gas main pipeline 4 and are communicated with the waste gas treatment device 5, the bypass pipeline 11 is communicated with the waste gas main pipeline 4, a flange butterfly valve 7 is arranged at the joint of the bypass pipeline 11 and the waste gas main pipeline 4, and a first electric valve 6 and a second electric valve 8 are respectively arranged on the waste gas main pipelines 4 at two sides of the joint; the bypass electric valve 10, the pressure gauge 12 and the heat converter 13 are sequentially arranged on the bypass pipeline 11, the heat converter 13 is connected with the waste heat recovery mechanism 16 through the first waste heat circulation pipe 17, the waste heat recovery mechanism 16 is connected with the waste heat collector 18 through the second waste heat circulation pipe 19, the waste heat recovery mechanism 16 and the waste heat collector 18 are respectively connected with the waste heat control system through lines, and the waste heat control system is respectively connected with the pressure gauge 12 and the bypass electric valve 10 on the bypass pipeline 11, the pressure difference sensor 14 and/or the temperature sensor 15 arranged on the main exhaust gas pipeline 4 and the air valve executing mechanism 2 through lines.
A differential pressure sensor 14 and/or a temperature sensor 15 is provided on the inlet side of the main exhaust gas pipe 4 as needed; one preferred scheme is as follows: a differential pressure sensor 14 and/or a temperature sensor 15 are arranged on the main exhaust gas pipeline 4 between the bypass pipeline 11 and the first electric valve 6; in addition, the heat converter 13 adopts a gas-liquid heat exchanger or a gas-gas heat exchanger as required, and the waste heat recovery mechanism 16 provides heat for the heat converter 13 to heat the gas circuit circulation in the heat converter 13.
In the waste gas treatment system for the OVD deposition of the optical fiber preform, the waste heat collector 18 effectively collects and recycles the residual heat energy in the power system, for example, the waste heat collector 18 is connected with a waste heat discharge port of an air compressor/dryer 22 through an air compression/drying waste heat collecting pipe 23, and the waste heat collector 18 is connected with a waste heat discharge port of a cooling tower 20 through a cooling tower waste heat collecting pipe 21; the waste heat recovery mechanism 16, the waste heat collector 18, the first waste heat circulating pipe 17, the second waste heat circulating pipe 19, the air compression/drying waste heat collecting pipe 23, the cooling tower waste heat collecting pipe 21 and other matched valves on the pipelines are also controlled by the waste heat control system.
When the waste gas treatment system for the OVD deposition of the optical fiber preform rod is used, the error between the real-time pressure value transmitted to the waste heat control system by the differential pressure sensor 14 and the pressure reference value range in the waste heat control system is generally not more than +/-15 Pa, and the error between the real-time temperature value transmitted to the waste heat control system by the temperature sensor 15 and the temperature reference value range in the waste heat control system is not more than +/-3.25 ℃.
When the waste gas treatment system is used for normal production of the optical fiber perform OVD deposition system, the OVD deposition device 1 starts an air valve actuating mechanism 2 of an air draft system, glass dust is normally pumped to a waste gas treatment device 5 through an air draft pipeline 3, at the moment, a bypass electric valve 10 is in a closed state, a corresponding waste heat recovery mechanism 16 and a corresponding waste heat collector 18 both need to work normally, and heat energy can be stored in the waste heat collector 18; if the main exhaust gas pipe 4 has unstable wind pressure and/or insufficient air pipe temperature, the differential pressure sensor 14 and/or the temperature sensor 15 on the main exhaust gas pipe 4 feed back signals to the waste heat control system, the waste heat control system controls and processes the bypass electric valve 10, the heat converter 13, the waste heat recovery mechanism 16, the waste heat collector 18 and the like, and the heat in the waste heat collector 18 is rapidly conducted to a bypass part of the main exhaust gas pipe 4 through the waste heat recovery mechanism 16 and the heat converter 13 for drying and preheating; and the result after will handling the completion is exported for corresponding blast gate actuating mechanism 2, and after blast gate actuating mechanism 2 received the instruction, can carry out PID automatically regulated according to the pulse signal of real-time feedback, guarantees that exhaust system's corresponding exhaust pipe 3 can not be stained with on the inner wall because convulsions are not enough or humidity is big, influences OVD deposition efficiency and product quality etc. of deposition device 1. Furthermore, the waste heat energy in the waste gas treatment system is from a waste heat collecting and energy storing system in the power system. Therefore, the waste gas treatment system can be repeatedly switched and operated on line normally, the whole process does not influence the normal operation of the OVD deposition device 1, and the switching can be completed in about 1 minute.
The above embodiments are only for illustrating the technical idea of the present invention, and the protection scope of the present invention cannot be limited thereby, and any modification made on the basis of the technical scheme according to the technical idea proposed by the present invention falls within the protection scope of the present invention; the technology not related to the utility model can be realized by the prior art.
Claims (8)
1. The utility model provides an exhaust-gas treatment system for optical fiber perform OVD deposits, includes exhaust-gas treatment device (5), main exhaust gas pipeline (4), blast gate actuating mechanism (2), sets up bypass pipeline (11) of heat converter (13), its characterized in that: the heat converter (13) is connected with the waste heat recovery mechanism (16) through the first waste heat circulating pipe (17), the waste heat recovery mechanism (16) is connected with the waste heat collector (18) through the second waste heat circulating pipe (19), the waste heat recovery mechanism (16) and the waste heat collector (18) are respectively connected with the waste heat control system through lines, and the waste heat control system is respectively connected with a pressure gauge (12) on the bypass pipeline (11), a bypass electric valve (10) and a pressure difference sensor (14) and/or a temperature sensor (15) arranged on the waste gas main pipeline (4) and an air valve execution mechanism (2) through lines.
2. The exhaust gas treatment system for optical fiber preform OVD deposition according to claim 1, wherein: the differential pressure sensor (14) and/or the temperature sensor (15) are arranged on the inlet side of the main exhaust gas pipeline (4).
3. The exhaust gas treatment system for optical fiber preform OVD deposition according to claim 2, wherein: the differential pressure sensor (14) and/or the temperature sensor (15) are arranged on the main exhaust gas pipeline (4) between the bypass pipeline (11) and the first electric valve (6).
4. An exhaust gas treatment system for OVD deposition of optical fiber preforms according to any one of claims 1-3, wherein: the error between the real-time pressure value transmitted to the waste heat control system by the differential pressure sensor (14) and the pressure reference value range in the waste heat control system is not more than +/-15 Pa.
5. An exhaust gas treatment system for OVD deposition of optical fiber preforms according to any one of claims 1-3, wherein: the error between the real-time temperature value transmitted to the waste heat control system by the temperature sensor (15) and the range of the temperature reference value in the waste heat control system is not more than +/-3.25 ℃.
6. The exhaust gas treatment system for optical fiber preform OVD deposition according to claim 1, wherein: the heat converter (13) adopts a gas-liquid heat exchanger or a gas-gas heat exchanger.
7. The exhaust gas treatment system for optical fiber preform OVD deposition according to claim 1, wherein: the waste heat collector (18) is connected with a waste heat discharge port of the air compressor/dryer (22) through an air compression/drying waste heat collecting pipe (23).
8. The exhaust gas treatment system for optical fiber preform OVD deposition according to claim 1, wherein: the waste heat collector (18) is connected with a waste heat discharge port of the cooling tower (21) through a cooling tower waste heat collecting pipe (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122800557.1U CN216711930U (en) | 2021-11-11 | 2021-11-11 | Waste gas treatment system for optical fiber perform OVD deposition |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122800557.1U CN216711930U (en) | 2021-11-11 | 2021-11-11 | Waste gas treatment system for optical fiber perform OVD deposition |
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| CN216711930U true CN216711930U (en) | 2022-06-10 |
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| CN202122800557.1U Active CN216711930U (en) | 2021-11-11 | 2021-11-11 | Waste gas treatment system for optical fiber perform OVD deposition |
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2021
- 2021-11-11 CN CN202122800557.1U patent/CN216711930U/en active Active
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