CN210825924U - Nitrogen gas supply system for production of ultra-thin float glass - Google Patents
Nitrogen gas supply system for production of ultra-thin float glass Download PDFInfo
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- CN210825924U CN210825924U CN201922017368.XU CN201922017368U CN210825924U CN 210825924 U CN210825924 U CN 210825924U CN 201922017368 U CN201922017368 U CN 201922017368U CN 210825924 U CN210825924 U CN 210825924U
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Abstract
The utility model relates to a float glass production professional equipment technical field, concretely relates to nitrogen gas air supply system for ultra-thin float glass production, this air supply system include tin bath nitrogen package air supply system, tin bath air supply system, circulating water system. The air supply system further includes a heat exchange component; the heat exchange member includes a gas passage and a cooling water passage; the gas passage and the cooling water passage exchange heat; the gas passage is connected with a nitrogen bag exhaust pipe of the tin bath nitrogen bag gas supply system and a tin bath gas supply pipe of the tin bath gas supply system; and the cooling water passage is connected with a circulating water inlet pipe and a circulating water return pipe of the circulating water system. This gas supply system utilizes production line circulating water system nearby to cool off high temperature nitrogen gas, and the nitrogen gas after the cooling is carried to the molten tin bath gas supply line, realizes the recycle of high temperature nitrogen gas, avoids the waste that the direct evacuation of nitrogen gas caused, has reduced manufacturing cost.
Description
Technical Field
The utility model belongs to the technical field of float glass production professional equipment, a nitrogen gas supply system for ultra-thin float glass production is related to.
Background
In the production of float glass, the cooling of the outlet end plate of a common tin bath adopts a structure of a small water bag and a small nitrogen bag, the nitrogen consumption is less, the cooling strength is higher, and the requirement of a production process can be met; however, when high-grade thin glass and ultrathin glass are produced, because the glass plate is thin, the drawing amount is small, the brought heat is small, and the thin glass plate cannot bear the larger cooling strength of a small water bag and a small nitrogen bag structure, the warping of the glass plate is difficult to adjust, the quality and the application are influenced, and even the safe operation of a production line is influenced due to the occurrence of a plate breakage accident.
In order to effectively control the warping degree of glass during production of existing high-grade float thin glass and ultrathin glass, a 'large nitrogen bag structure' is adopted as a protection device for ensuring the safety of an outlet end plate of a tin bath, and normal-temperature nitrogen is continuously introduced into a large nitrogen bag to serve as a cooling medium, as shown in figure 1, the normal-temperature nitrogen enters a nitrogen bag (71, 72) after entering from a nitrogen bag air inlet (100) and is exhausted from a nitrogen bag air outlet (101), because the temperature of the nitrogen in the large nitrogen bag is increased to 110-120 ℃ after absorbing heat, the high-temperature nitrogen exhausted from the nitrogen bag air outlet (101) cannot be directly used for the tin bath and accessory facilities and is forced to be completely exhausted, the nitrogen consumption per hour reaches 300-320 Nm3/h, the nitrogen production cost is 0.20-0.30 yuan/Nm 3, the average nitrogen consumption cost is calculated according to 0.25 yuan/3, the nitrogen consumption cost of the nitrogen bag reaches 0.25 × 300-300 × 24 × 365=657000 yuan, the loss of one year (657 ten thousand yuan) loss is wasted, and the running cost of the float glass production line is remarkably increased.
How to fully utilize nitrogen and reduce cost becomes a problem which needs to be solved urgently.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: aiming at the problems of nitrogen waste and high production cost caused by evacuation treatment of nitrogen in the production of ultra-thin float glass in the prior art, the nitrogen gas supply system for the ultra-thin float glass is provided, and the nitrogen gas supply system is combined with a water circulation system of a production line, so that the application range of nitrogen is fully expanded, the waste is avoided, and the production cost is reduced.
In order to realize the purpose, the utility model discloses a technical scheme be:
a nitrogen gas supply system for ultra-thin float glass production comprises a tin bath nitrogen bag gas supply system, a tin bath gas supply system and a circulating water system, wherein the tin bath nitrogen bag gas supply system comprises a nitrogen bag gas inlet pipe, a nitrogen bag and a nitrogen bag exhaust pipe; the tin bath gas supply system comprises a tin bath gas supply device and a tin bath gas supply pipe; the circulating water system comprises a circulating water inlet pipe and a circulating water return pipe; the air supply system further includes a heat exchange component;
the heat exchange member includes a gas passage and a cooling water passage; the gas passage and the cooling water passage exchange heat;
the gas passage is connected with the nitrogen bag exhaust pipe and the tin bath gas supply pipe;
the cooling water passage is connected with the circulating water inlet pipe and the circulating water return pipe.
Through the heat exchange part, realize the heat exchange from the high temperature nitrogen gas of molten tin bath nitrogen package discharge port and cooling water, reduced the temperature of nitrogen gas for the cooling of molten tin bath can be used to the nitrogen gas after the cooling, only needs to be connected to the molten tin bath air supply pipe with the rear end of gas passage, can realize the connection of gas passage. The used cooling water adopts circulating water on a production line, and the connection of cooling water passages can be realized by adopting nearby connection. The recycling of the high-temperature nitrogen discharged by the tin bath nitrogen bag is realized, the waste of the nitrogen is reduced, and the production cost is reduced.
As a preferable aspect of the present invention, the gas passage includes a first gas passage and a second gas passage;
the tin bath gas supply pipe comprises a tin bath nitrogen and hydrogen gas supply pipe and a tin bath nitrogen and hydrogen gas supply pipe;
the first gas passage is connected with the nitrogen bag exhaust pipe and the tin bath nitrogen and hydrogen gas supply pipe;
the second gas passage is connected with the nitrogen bag exhaust pipe and the tin bath nitrogen gas supply pipe.
The tin bath gas supply pipe comprises a tin bath nitrogen gas supply pipe and a tin bath nitrogen hydrogen gas supply pipe. Through set up two gas passage in a heat exchange unit, realize supplying the nitrogen gas after the cooling respectively to two kinds of different pipelines of tin bath nitrogen gas supply pipe and tin bath nitrogen hydrogen gas supply pipe, can conveniently adjust gaseous flow according to the requirement of different pipeline gas flow.
As a preferable aspect of the present invention, the heat exchange part includes a first heat exchange part and a second heat exchange part;
the tin bath gas supply pipe comprises a tin bath nitrogen and hydrogen gas supply pipe and a tin bath nitrogen and hydrogen gas supply pipe;
the gas passage of the first heat exchange part is connected with the nitrogen bag exhaust pipe and the tin bath nitrogen and hydrogen gas supply pipe;
and the gas passage of the second heat exchange part is connected with the nitrogen bag exhaust pipe and the tin bath nitrogen gas supply pipe.
By arranging the two heat exchange parts, the gas passages of the two heat exchange parts respectively supply gas to two different gas supply pipes, and the temperature of nitrogen in each gas passage can be controlled by adjusting the flow rate of cooling water of each heat exchange part.
As a preferable embodiment of the present invention, a first stop valve is provided between the gas passage and the nitrogen bag exhaust pipe.
Through setting up first stop valve for gas flow changes in the control, does benefit to and promotes whole gas supply line safety. The first stop valve is a ball valve.
As the utility model discloses a preferred scheme, the cooling water passageway with be equipped with the second stop valve between the circulation inlet tube.
Through setting up the second stop valve for discharge is changeed in the control, does benefit to and promotes whole air supply line safety. The second stop valve is a ball valve.
As the preferable proposal of the utility model, the gas supply system also comprises a first branch pipe and a transition roller slag box gas supply pipe;
the first branch pipe is connected with the nitrogen bag exhaust pipe and the transition roller slag box air supply pipe.
The nitrogen amount discharged from the tin bath nitrogen bag is large, and the nitrogen amount is remained after the tin bath nitrogen bag is used for a tin bath. Through setting up first branch pipe, realize using uncooled nitrogen gas for transition roller slag box. The temperature in the slag box is higher than the temperature of nitrogen gas discharged from a nitrogen bag of the tin bath, and the nitrogen gas can be directly used for cooling the slag box.
As the preferred scheme of the utility model, be equipped with the third stop valve on the first branch pipe.
As a preferable scheme of the utility model, the gas supply system further comprises a second branch pipe; one end of the second branch pipe is connected with the nitrogen bag exhaust pipe, and the other end of the second branch pipe is connected with the exhaust space.
By arranging the second branch pipe and using the second branch pipe as an emptying branch pipe, when the nitrogen flow is large, the discharge of redundant nitrogen is realized.
As the preferred scheme of the utility model, be equipped with the fourth stop valve on the second branch pipe.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
1. the utility model discloses a nitrogen gas air supply system for production of ultra-thin float glass sets up heat exchange device through wrapping the blast pipe at nitrogen, utilizes production line circulating water system to cool off high temperature nitrogen gas nearby, and the nitrogen gas after the cooling is carried to the molten tin bath gas supply line, realizes high temperature nitrogen gas's recycle, avoids the waste that the direct evacuation of nitrogen gas caused, has reduced manufacturing cost.
2. The utility model discloses a suitable setting to valve, evacuation pipe, flowmeter in the system, the flow and the temperature of nitrogen gas in each pipeline of regulation that can be convenient have realized the transport of nitrogen gas to the different positions of production lines such as molten tin bath, sediment case to can realize the emission of unnecessary nitrogen gas.
Drawings
FIG. 1 is a schematic diagram of a nitrogen supply system of a tin bath in the prior art.
Fig. 2 is a schematic view of embodiment 1 of the present invention.
FIG. 3 is a schematic view of a heat exchange member in example 1.
Fig. 4 is a schematic view of embodiment 2 of the present invention.
FIG. 5 is a schematic view of a heat exchange member in example 2.
Icon: 1-a tin bath nitrogen bag gas supply system; 100-nitrogen bag air inlet pipe; 101-nitrogen bag exhaust pipe; 11-a first branch; 12-a second branch; 2-circulating water system; 201-circulating water inlet pipe; 202-circulating water return pipe; 21-a first heat exchange element; 22-a second heat exchange element; 211 — first cooling water passage; 212-first gas passageway; 221-a second cooling water passage; 222-a second gas passage; 3-a tin bath nitrogen gas supply device; 301-tin bath nitrogen gas supply pipe; 4-a tin bath nitrogen and hydrogen gas supply device; 401-tin bath nitrogen and hydrogen gas supply pipe; 5-transition roller slag box; 51-a first branch flow meter; 61-tin bath nitrogen-hydrogen part; 62-tin bath nitrogen part; 71-first nitrogen packet; 72-second nitrogen package.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The pressure of a high-temperature nitrogen emptying pipe of a large nitrogen bag of the existing outlet end plate is more than 0.05MPa, the pressure of the internal space of a tin bath is about 30Pa, the internal pressure of a slag box is about 10 Pa, and N is used for an endoscope and an endoscope2The pressure is 0.01MPa, and the outlet end plate large nitrogen bag high-temperature nitrogen gas has the basic condition of supplying gas to facilities such as a tin bath, a slag box, an endoscope and the like as a gas source. The on-site circulating water pipeline is equipped with a standby connectorThe circulating water is softened, and the water pressure and the water quantity of the water quality meet the use requirements. And air inlet pipe holes are reserved on two sides of the slag box, so that nitrogen can be introduced into the pipe insertion.
Example 1
A nitrogen gas supply system for ultra-thin float glass production is shown in figure 2 and comprises a tin bath nitrogen bag gas supply system 1, a tin bath gas supply system and a circulating water system 2, wherein the tin bath nitrogen bag gas supply system 1 comprises a nitrogen bag gas inlet pipe 100, a nitrogen bag and a nitrogen bag exhaust pipe 101, and the tin bath nitrogen bag is arranged on an outlet end plate of a tin bath; the tin bath gas supply system comprises a tin bath gas supply device and a tin bath gas supply pipe; the circulating water system comprises a circulating water inlet pipe 201 and a circulating water return pipe 202; the nitrogen bag exhaust pipe 101 is the tail end part of the tin bath nitrogen bag gas supply system 1; the tin bath gas supply pipe comprises a tin bath nitrogen gas supply pipe 301 and a tin bath nitrogen and hydrogen gas supply pipe 401; one end of the tin bath nitrogen gas supply pipe 301 is connected with the tin bath nitrogen gas supply device 3, and the other end of the tin bath nitrogen gas supply pipe is respectively connected with the tin bath nitrogen gas part 62 of nitrogen gas for the tin bath after being shunted by a pipeline provided with a flowmeter; the tin bath nitrogen part 62 comprises tin bath inner space, a tin bath endoscope, a tin bath observation window, a tin bath 0BAY nitrogen bag and other tin bath parts; one end of the tin bath nitrogen and hydrogen gas supply pipe 401 is connected with the tin bath nitrogen and hydrogen gas supply device 4, and the other end is connected with the tin bath nitrogen and hydrogen gas part 61 of nitrogen and hydrogen gas for the tin bath through a pipeline with a valve; the tin bath nitrogen-hydrogen gas portion 61 includes a tin bath third BAY portion.
The nitrogen gas supply system further includes a heat exchange section, which in this embodiment includes a first heat exchange section 21 and a second heat exchange section 22; the first heat exchange part 21 includes a first cooling water passage 211 and a first gas passage 212, and the second heat exchange part 22 includes a second cooling water passage 221 and a second gas passage 222; the first cooling water passage 211 and the second cooling water passage 221 are connected to the circulating water system 2 through the circulating water inlet pipe 210 and the circulating water return pipe 202;
the first gas passage 212 is connected with the nitrogen bag exhaust pipe 101 and the molten tin bath nitrogen-hydrogen gas supply pipe 401, and a first valve is arranged on one side of the nitrogen bag exhaust pipe 101; a first flow meter is arranged on one side of the tin bath nitrogen and hydrogen gas supply pipe 401. The second gas passage 222 is connected with the nitrogen bag exhaust pipe 101 and the tin bath nitrogen gas supply pipe 301, and a second valve is arranged on one side of the nitrogen bag exhaust pipe 101; a second flowmeter is arranged on one side of the tin bath nitrogen gas supply pipe 301.
The embodiment also comprises a first branch pipe 11 and a second branch pipe 12, wherein one end of the first branch pipe 11 is connected with the nitrogen bag exhaust pipe 101, the other end of the first branch pipe is connected to the transition roller slag box 5, and a first branch pipe flowmeter 51 is arranged on one side close to the transition roller slag box 5. One end of the second branch pipe 12 is connected with the nitrogen bag exhaust pipe 101, the other end is evacuated, and a second branch pipe valve is further arranged on the second branch pipe 12.
The first heat exchange member 21 and the second heat exchange member 22 are structured as shown in fig. 3, and the first heat exchange member 21 and the second heat exchange member 22 are structured in conformity. The structure of the first heat exchange member 21 will be described as an example. The first heat exchange member 21 includes a first seamless steel pipe as the first gas passage 212, and a first outer sleeve is provided outside the first seamless steel pipe, and the end of the first outer sleeve is welded to the first seamless steel pipe via front and rear end plates; forming a closed cavity; the cavity is internally provided with a guide plate for controlling the direction of water flow. The cavity is provided with a water inlet and a water outlet, and the water inlet and the water outlet and the cavity form a first cooling water passage 211.
The gas supply system utilizes the production line circulating water system nearby to cool the high-temperature nitrogen, the cooled nitrogen is conveyed to the tin bath cooling pipeline in a cold mode, recycling of the high-temperature nitrogen is achieved, waste is avoided, and production cost is reduced.
Example 2
The present embodiment differs from embodiment 1 in the arrangement of heat exchange members, and as shown in fig. 4 and 5, the heat exchange device in the present embodiment includes a first cooling water passage 211, a first gas passage 212, and a second gas passage 222; the first gas passage 212 and the second gas passage 222 are both provided in the first cooling water passage 211.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. A nitrogen gas supply system for ultra-thin float glass production comprises a tin bath nitrogen bag gas supply system, a tin bath gas supply system and a circulating water system, wherein the tin bath nitrogen bag gas supply system comprises a nitrogen bag gas inlet pipe, a nitrogen bag and a nitrogen bag exhaust pipe; the tin bath gas supply system comprises a tin bath gas supply device and a tin bath gas supply pipe; the circulating water system comprises a circulating water inlet pipe and a circulating water return pipe; characterized in that the device also comprises a heat exchange component;
the heat exchange member includes a gas passage and a cooling water passage; the gas passage and the cooling water passage exchange heat;
the gas passage is connected with the nitrogen bag exhaust pipe and the tin bath gas supply pipe;
the cooling water passage is connected with the circulating water inlet pipe and the circulating water return pipe.
2. The nitrogen gas supply system for ultra-thin float glass production according to claim 1,
the gas passages include a first gas passage and a second gas passage;
the tin bath gas supply pipe comprises a tin bath nitrogen and hydrogen gas supply pipe and a tin bath nitrogen and hydrogen gas supply pipe;
the first gas passage is connected with the nitrogen bag exhaust pipe and the tin bath nitrogen and hydrogen gas supply pipe;
the second gas passage is connected with the nitrogen bag exhaust pipe and the tin bath nitrogen gas supply pipe.
3. The nitrogen gas supply system for ultra-thin float glass production according to claim 1,
the heat exchange part comprises a first heat exchange part and a second heat exchange part;
the tin bath gas supply pipe comprises a tin bath nitrogen and hydrogen gas supply pipe and a tin bath nitrogen and hydrogen gas supply pipe;
the gas passage of the first heat exchange part is connected with the nitrogen bag exhaust pipe and the tin bath nitrogen and hydrogen gas supply pipe;
and the gas passage of the second heat exchange part is connected with the nitrogen bag exhaust pipe and the tin bath nitrogen gas supply pipe.
4. The nitrogen gas supply system for ultra-thin float glass production according to claim 1, wherein a first shut-off valve is provided between the gas passage and the nitrogen blanket exhaust pipe.
5. The nitrogen gas supply system for ultra-thin float glass production according to claim 1, wherein a second stop valve is provided between the cooling water passage and the circulation water inlet pipe.
6. The nitrogen gas supply system for ultra-thin float glass production according to any one of claims 1 to 5,
the slag-removing device also comprises a first branch pipe and a transition roller slag box gas supply pipe;
the first branch pipe is connected with the nitrogen bag exhaust pipe and the transition roller slag box air supply pipe.
7. The nitrogen gas supply system for ultra-thin float glass production of claim 6, wherein a third shut-off valve is provided on the first branch pipe.
8. The nitrogen gas supply system for ultra-thin float glass production according to any one of claims 1 to 5, further comprising a second branch pipe; one end of the second branch pipe is connected with the nitrogen bag exhaust pipe, and the other end of the second branch pipe is connected with the exhaust space.
9. The nitrogen gas supply system for ultra-thin float glass production according to claim 8, wherein a fourth cut-off valve is provided on the second branch pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922017368.XU CN210825924U (en) | 2019-11-20 | 2019-11-20 | Nitrogen gas supply system for production of ultra-thin float glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922017368.XU CN210825924U (en) | 2019-11-20 | 2019-11-20 | Nitrogen gas supply system for production of ultra-thin float glass |
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| Publication Number | Publication Date |
|---|---|
| CN210825924U true CN210825924U (en) | 2020-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922017368.XU Active CN210825924U (en) | 2019-11-20 | 2019-11-20 | Nitrogen gas supply system for production of ultra-thin float glass |
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| CN (1) | CN210825924U (en) |
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