Anti-backfire safety water seal equipment for medium frequency furnace

Abstract

The present invention discloses a flashback safety water seal device for an intermediate frequency furnace, comprising a rectangular box without a cover plate, a partition plate and a movable baffle unit disposed within the box, a sealing cover plate unit disposed between the top end of the partition plate and the top end of the box, the bottom end of the partition plate being disconnected from the bottom plate of the box, and the bottom end of the movable baffle unit being connected to the bottom plate of the box; an air intake pipe, an exhaust pipe, and a reflux condensate pipe, wherein the first end of the air intake pipe passes through the sealing cover plate unit; the first end of the exhaust pipe passes through the sealing cover plate unit, the first end of the exhaust pipe is located within the box, and the second end of the exhaust pipe is connected to the reflux condensate pipe; the first end of the reflux condensate pipe is located within the box between the partition plate and the movable baffle unit, and the second end of the reflux condensate pipe is used to discharge hydrogen. The device can prevent flashback caused by negative pressure in the intermediate frequency furnace, thereby eliminating the safety hazard of explosion.

Description

Technical Field

[0001] The invention belongs to the technical field of anti-backfire equipment, and in particular relates to an anti-backfire safety water seal device for a medium frequency furnace. Background Art

[0002] During the sintering process of tungsten and molybdenum products, an intermediate frequency furnace uses hydrogen as a reducing and shielding gas. Under normal circumstances, the furnace maintains a positive pressure of 2-3 kPa. Hydrogen is discharged from the furnace through a seamless pipe with a diameter of 20-30 mm and ignited. During operation, a sudden gas outage, resulting in negative pressure, can cause tempering, or a leak in the intermediate frequency furnace can cause tempering, posing a safety hazard of explosion. To prevent the potential tempering and explosion hazards caused by negative pressure, a tempering prevention water seal device is required. Summary of the Invention

[0003] The purpose of the present invention is to provide a tempering prevention safety water seal device for a medium frequency furnace, which can prevent the medium frequency furnace from generating tempering and explosion safety hazards due to negative pressure.

[0004] The technical solution adopted by the present invention is a backfire prevention safety water seal device for a medium frequency furnace, comprising a rectangular box without a cover, a partition and a movable baffle unit arranged in the box, a sealing cover unit arranged between the top end of the partition and the top end of the box, the bottom end of the partition is not connected to the bottom plate of the box, and the bottom end of the movable baffle unit is connected to the bottom plate of the box; it also includes an air intake pipe, an exhaust pipe and a reflux condensate pipe, the first end of the air intake pipe passes through the sealing cover unit and is located in the box; the first end of the exhaust pipe passes through the sealing cover unit, the first end of the exhaust pipe is located in the box, and the second end of the exhaust pipe is connected to the reflux condensate pipe; the first end of the reflux condensate pipe is located in the box between the partition and the movable baffle unit, and the second end of the reflux condensate pipe is used to discharge hydrogen.

[0005] The present invention is also characterized in that

[0006] The movable baffle unit includes a fixed baffle, the bottom end of which is welded to the bottom plate of the box body, and also includes slide rails respectively installed on two opposite side walls of the box body, and the movable baffle is installed between the two slide rails; the slide rail is a U-shaped slide rail, and the two opposite side walls of the slide rail are provided with strip-shaped through holes. The part of the plate body of the movable baffle located inside the slide rail is provided with bolt holes, and the movable baffle is connected to the slide rail by bolts and nuts;

[0007] A sealing strip is provided between the movable baffle and the fixed baffle.

[0008] The sealing cover plate unit includes a cover plate, which is located between the top of the partition and the top of the box body; the cover plate is provided with an explosion-proof port, and an explosion-proof membrane is installed on the explosion-proof port; the first end of the intake pipe passes through the cover plate; the first end of the exhaust pipe passes through the cover plate.

[0009] A drainage port is provided on the side wall of the box body close to the movable baffle unit.

[0010] A plurality of supporting legs are provided at the bottom of the box.

[0011] The beneficial effects of the present invention are:

[0012] The present invention is a backfire prevention safety water seal device for a medium frequency furnace. Hydrogen is ignited at the upper end of a reflux condensate pipe. The reflux condensate generated by sintering flows back into the reflux condensate pipe and is promptly discharged through the reflux condensate pipe. The water level is controlled by the height of a movable baffle unit in a box. Water generated during sintering will automatically overflow from the movable baffle. If the overflowed water is excessive, the water can be discharged through a drain pipe. The device can not only ensure the stability of the pressure in the medium frequency furnace, but also prevent the occurrence of backfire in the medium frequency furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic structural diagram of the anti-backfire safety water seal device for a medium frequency furnace according to the present invention;

[0014] Figure 2 This is a diagram showing the usage status of the anti-backfire safety water seal device for a medium frequency furnace according to the present invention.

[0015] In the figure, 1. Box body, 2. Partition, 3. Movable baffle unit, 4. Sealing cover unit, 5. Inlet pipe, 6. Exhaust pipe, 7. Reflux condensate pipe, 8. Drain port, 9. Support legs, 10. Intermediate frequency furnace;

[0016] 3-1. Fixed baffle, 3-2. Slide rail, 3-3. Movable baffle;

[0017] 4-1. Cover plate, 4-2. Explosion-proof opening;

[0018] A. Water surface, B. Ground, C. Reflux condensate, D. Exhaust, E. Exhaust gas ignition. DETAILED DESCRIPTION

[0019] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] The present invention provides a tempering prevention safety water seal device for a medium frequency furnace, such as Figure 1-2As shown, it includes a rectangular box 1 without a cover, there is water in the box 1, a partition 2 and a movable baffle unit 3 are provided in the box 1, a sealing cover unit 4 is provided between the top of the partition 2 and the top of the box 1, the bottom end of the partition 2 is not connected to the bottom plate of the box 1 (there is a gap), and the bottom end of the movable baffle unit 3 is connected to the bottom plate of the box 1; the distance between the bottom end of the partition 2 and the bottom plate of the box 1 is less than the height of the movable baffle unit 3; it also includes an air intake pipe 5, an exhaust pipe 6 and a reflux condensed water pipe 7, the first end of the air intake pipe 5 passes through the sealing cover unit 4, and the first end of the air intake pipe 5 is located at the box 1 is 10-30 mm below the water surface A in the box body (1), and the second end of the air inlet pipe 5 is connected to one end of the pipe for discharging hydrogen of the intermediate frequency furnace; the first end of the exhaust pipe 6 passes through the sealing cover unit 4, the first end of the exhaust pipe 6 is located above the water surface A in the box body (1), and the second end of the exhaust pipe 6 is connected to the reflux condensing water pipe 7; the first end of the reflux condensing water pipe 7 is located in the box body 1 between the partition 2 and the movable baffle unit 3, and the first end of the reflux condensing water pipe 7 is located below the water surface A; the second end of the reflux condensing water pipe 7 is used to discharge hydrogen, and the discharged hydrogen is treated as exhaust gas ignition E.

[0021] The movable baffle unit 3 includes a fixed baffle 3-1, the bottom end of which is welded to the bottom plate of the box body 1, and also includes slide rails 3-2 respectively installed on two opposite side walls of the box body 1, and a movable baffle 3-3 is installed between the two slide rails 3-2; the slide rail 3-2 is a U-shaped slide rail, and two opposite side walls of the slide rail 3-2 are provided with strip-shaped through holes, and the part of the plate body of the movable baffle 3-3 located inside the slide rail 3-2 is provided with bolt holes, and the movable baffle 3-3 is connected to the slide rail 3-2 by bolts and nuts (after each adjustment of the position of the movable baffle 3-3, bolts are used to pass through the strip-shaped through holes of the slide rail 3-2 and the bolt holes of the movable baffle 3-3 to fix the movable baffle 3-3 to the slide rail 3-2);

[0022] A sealing strip is provided between the movable baffle 3-3 and the fixed baffle 3-1.

[0023] The sealing cover unit 4 includes a cover 4-1, which is located between the top of the partition 2 and the top of the box body 1; an explosion-proof opening 4-2 is provided on the cover 4-1, and an explosion-proof membrane is installed on the explosion-proof opening 4-2; the first end of the air inlet pipe 5 passes through the cover 4-1; the first end of the exhaust pipe 6 passes through the cover 4-1.

[0024] A drain port 8 is provided on the side wall of the box body 1 close to the movable baffle unit 3 .

[0025] A plurality of legs 9 are provided at the bottom of the box body 1 .

[0026] When using, such as Figure 2As shown, it is placed on the ground B, and the hydrogen discharged from the intermediate frequency furnace 10 enters the box 1 through the air inlet pipe 5. Water is added to the part of the box 1 on the right side of the movable baffle unit 3 as a liquid seal, wherein the top right side of the partition 2 has a cover 4-1 for sealing, and the left side is open. The partition 2 is 1 cm away from the bottom plate of the box 1, and the left and right sides are connected. The movable baffle unit 3 can be used to control the water level; the hydrogen generated by the intermediate frequency furnace 10 enters the box 1 through the air inlet pipe 5, and the end of the air inlet pipe 5 is inserted 10-30 mm underwater. After being discharged from underwater, the hydrogen enters the exhaust pipe 6 (for exhaust D) and the reflux condensate pipe 7 in turn, and is discharged from the box 1 and ignited at the upper end of the reflux condensate pipe 7. The lower end of the reflux condensate pipe 7 is located in the box 1 between the partition 2 and the movable baffle unit 3 and is inserted underwater 10 mm from the bottom. The reflux condensed water C generated by sintering flows back into the reflux condensed water pipe 7 and is discharged in time through the reflux condensed water pipe 7. The water level is controlled by the height of the movable baffle unit 3 in the box. The water generated during sintering will automatically overflow from the movable baffle 3-3, which not only ensures the stability of the pressure in the furnace, but also prevents the occurrence of tempering.

Claims

1. Anti-tempering safety water seal equipment for medium frequency furnace, characterized by: The invention comprises a rectangular box body (1) without a cover plate, wherein a partition plate (2) and a movable baffle plate unit (3) are provided in the box body (1), a sealing cover plate unit (4) is provided between the top end of the partition plate (2) and the top end of the box body (1), the bottom end of the partition plate (2) is not connected to the bottom plate of the box body (1), and the bottom end of the movable baffle plate unit (3) is connected to the bottom plate of the box body (1); and further comprises an air inlet pipe (5), an exhaust pipe (6) and a reflux condensate pipe (7), wherein the first end of the air inlet pipe (5) is connected to the bottom plate of the box body (1). The end portion passes through the sealing cover plate unit (4) and is located in the box body (1); the first end portion of the exhaust pipe (6) passes through the sealing cover plate unit (4), the first end portion of the exhaust pipe (6) is located in the box body (1), and the second end portion of the exhaust pipe (6) is connected to the reflux condensing water pipe (7); the first end portion of the reflux condensing water pipe (7) is located in the box body (1) between the partition plate (2) and the movable baffle unit (3), and the second end portion of the reflux condensing water pipe (7) is used to discharge hydrogen; The movable baffle unit (3) includes a fixed baffle (3-1), the bottom end of which is welded to the bottom plate of the box body (1), and also includes slide rails (3-2) respectively installed on two opposite side walls of the box body (1), and a movable baffle (3-3) is installed between the two slide rails (3-2); the slide rail (3-2) is a U-shaped slide rail, and strip-shaped through holes are provided on two opposite side walls of the slide rail (3-2); a portion of the plate body of the movable baffle (3-3) located inside the slide rail (3-2) is provided with bolt holes, and the movable baffle (3-3) is connected to the slide rail (3-2) by bolts and nuts; The sealing cover plate unit (4) comprises a cover plate (4-1), the cover plate (4-1) being located between the top end of the partition plate (2) and the top end of the box body (1); an explosion-proof opening (4-2) being provided on the cover plate (4-1), and an explosion-proof membrane being installed on the explosion-proof opening (4-2); a first end of the air inlet pipe (5) passing through the cover plate (4-1); and a first end of the exhaust pipe (6) passing through the cover plate (4-1).

2. The anti-tempering safety water seal equipment for medium frequency furnace according to claim 1, characterized in that: A sealing strip is provided between the movable baffle (3-3) and the fixed baffle (3-1).

3. The anti-tempering safety water seal equipment for medium frequency furnace according to claim 1, characterized in that: A drainage port (8) is provided on the side wall of the box body (1) close to the movable baffle unit (3).

4. The anti-tempering safety water seal equipment for medium frequency furnace according to claim 1, characterized in that: A plurality of supporting legs (9) are provided at the bottom of the box body (1).

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