Emergency blow-off valve plate stable in sealing

Abstract

The utility model relates to the technical field of emergency blow-off valve plates, in particular to a stably-sealed emergency blow-off valve plate which comprises a steelmaking blast furnace, an air outlet port is fixedly connected to the upper side of the steelmaking blast furnace, and an emergency blow-off mechanism is arranged on the upper side of the air outlet port. The emergency diffusing mechanism comprises an air outlet cylinder, a top disc is arranged on the upper side of the air outlet cylinder, an air outlet bent pipe is installed on the upper side of the top disc, an installation top base is installed at the bottom of the top disc in a threaded connection mode, a fixing cylinder is fixedly connected to the lower side of the installation top base, an electromagnetic coil is fixedly installed on the inner side of the fixing cylinder, and a sleeve slidably sleeves the outer side of the fixing cylinder. And a conical valve plate is screwed at the bottom of the sleeve. According to the utility model, the conical opening is in a sealed state under the action of magnetic repulsive force through the arranged emergency bleeding mechanism, the conical opening is automatically opened when the air pressure in the steel-making blast furnace exceeds a control value, and the conical opening is closed when the pressure value drops to the control value, so that the reaction is rapid, and the pressure value can be accurately controlled.

Description

Technical Field

[0001] This utility model relates to the field of emergency venting valve plate technology, and in particular to an emergency venting valve plate with stable sealing. Background Technology

[0002] An emergency venting valve is a device used to quickly release pressure in emergency situations. It is commonly used in gas holders, blast furnace tops, and other similar applications. The main purpose of this device is to automatically or manually open when the internal pressure of the system exceeds a set value, so as to quickly reduce the pressure and prevent possible accidents or damage.

[0003] Referring to the utility model patent with authorization announcement number CN220396489U, an emergency venting valve for a rotary hearth furnace includes a valve cover, a valve cover bracket, a support, and a drive mechanism. The drive mechanism is rotatably connected to the support and has a drive end. The valve cover bracket is sequentially connected to the valve cover, the support, and the drive end from one end to the other. The valve cover bracket is rotatably connected to the support and also rotatably connected to the drive end. The drive mechanism drives the valve cover bracket to rotate relative to the support through the drive end, so that the valve cover rotates and switches between an open position and a closed position.

[0004] The aforementioned patent uses a drive mechanism to drive the valve cover to open and release air, which is an active air release and pressure reduction function. When the pressure value reaches the control pressure value, it needs to be driven again to seal. The drive interval time is relatively long, which is not conducive to the precise control of the pressure value inside the furnace. In order to solve the above technical defects, we proposed an emergency venting valve plate with stable sealing. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a sealed and stable emergency venting valve plate.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A sealed and stable emergency venting valve plate is provided, including a steelmaking blast furnace. A gas outlet port is fixedly connected to the upper side of the blast furnace, and an emergency venting mechanism is provided above the gas outlet port. The emergency venting mechanism includes a gas outlet cylinder, a top plate on the upper side of the gas outlet cylinder, a gas outlet bend installed on the upper side of the top plate, a mounting base screwed to the bottom of the top plate, a fixed cylinder fixedly connected to the lower side of the mounting base, an electromagnetic coil fixedly installed inside the fixed cylinder, a sleeve slidably fitted on the outer side of the fixed cylinder, a permanent magnet fixedly installed inside the sleeve, a conical valve plate screwed to the bottom of the sleeve, and a gas outlet cone at the lower end of the gas outlet cylinder. The conical valve plate and the gas outlet cone are sized to match.

[0008] Furthermore, a controller is fixedly installed on the outer wall of the steelmaking blast furnace, and the controller is electrically connected to the electromagnetic coil.

[0009] Furthermore, a first mounting plate is fixedly connected to the bottom of the air outlet, and the first mounting plate is screwed onto the upper side of the air outlet port.

[0010] Furthermore, a second mounting plate is fixedly connected to the bottom end of the air outlet bend, and the second mounting plate, the top plate, and the air outlet cylinder are screwed together.

[0011] Furthermore, the top plate is provided with air vents, which are equidistantly distributed along the circumference of the top plate.

[0012] Furthermore, a limiting strip is fixedly connected to the outer wall of the fixed cylinder, and a sliding groove adapted to the limiting strip is provided on the inner wall of the sleeve.

[0013] Furthermore, a flexible pad is fixedly installed at the bottom of the electromagnetic coil.

[0014] Furthermore, the conical valve plate has side notches equidistantly spaced along its upper circumference, and a sealing ring is installed along its lower circumference. The sealing ring is made of high-temperature resistant aluminum silicate fiber.

[0015] Compared with related technologies, the sealing and stable emergency venting valve plate proposed in this utility model has the following advantages:

[0016] Beneficial effects:

[0017] In this invention, the sealed and stable emergency venting valve plate, through an emergency venting mechanism, utilizes a controller to energize an electromagnetic coil, causing the magnetic poles of the electromagnetic coil and the corresponding end of the permanent magnet column to be opposite. This magnetic repulsion forces the conical valve plate below the sleeve to abut against the inner side of the outlet cone, thus sealing the outlet cone. When the internal gas pressure of the blast furnace reaches the control limit, the gas pressure overcomes the magnetic repulsion, pushing the conical valve plate upwards, opening the conical opening and allowing gas to vent inside the blast furnace. The pressure relief mechanism works by using magnetic repulsion to keep the conical opening sealed when the pressure drops below the limit control value. When the pressure inside the blast furnace exceeds the control value, the conical opening automatically opens, reacting quickly. When the pressure drops back to the control value, the conical opening automatically closes, restoring the blast furnace to a sealed state. This allows for precise control of the pressure inside the blast furnace. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the sealing and stable emergency relief valve plate proposed in this utility model.

[0019] Figure 2 A three-dimensional structural diagram of an emergency evacuation mechanism;

[0020] Figure 3 A three-dimensional cross-sectional diagram of the emergency evacuation mechanism;

[0021] Figure 4 This is a schematic diagram of the three-dimensional disassembly structure of the emergency evacuation mechanism.

[0022] In the diagram: 1. Blast furnace for steelmaking; 2. Controller; 3. Gas outlet port; 4. Emergency venting mechanism; 41. First mounting plate; 42. Gas outlet cylinder; 43. Top plate; 44. Second mounting plate; 45. Gas outlet bend; 46. Gas outlet cone; 47. Gas outlet hole; 48. Mounting top seat; 49. Fixed cylinder; 410. Electromagnetic coil; 411. Flexible gasket; 412. Sleeve; 413. Permanent magnet column; 414. Conical valve plate; 415. Side notch; 416. Limiting strip; 417. Sealing ring. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Reference Figure 1-4 The sealed and stable emergency venting valve plate includes a steelmaking blast furnace 1. A gas outlet port 3 is fixedly connected to the upper side of the steelmaking blast furnace 1. An emergency venting mechanism 4 is set on the upper side of the gas outlet port 3. The emergency venting mechanism 4 includes a gas outlet cylinder 42. A top plate 43 is set on the upper side of the gas outlet cylinder 42. A gas outlet bend 45 is installed on the upper side of the top plate 43. A mounting base 48 is screwed to the bottom of the top plate 43. A fixed cylinder 49 is fixedly connected to the lower side of the mounting base 48. An electromagnetic coil 410 is fixedly installed inside the fixed cylinder 49. A sleeve 412 is slidably sleeved on the outer side of the fixed cylinder 49. A permanent magnet column 413 is fixedly installed inside the sleeve 412. A conical valve plate 414 is screwed to the bottom of the sleeve 412. A gas outlet cone 46 is set at the lower end of the gas outlet cylinder 42. The conical valve plate 414 and the gas outlet cone 46 are matched in size. A controller 2 is fixedly installed on the outer wall of the steelmaking blast furnace 1. The controller 2 is electrically connected to the electromagnetic coil 410.

[0025] By using the above-described configuration, the controller 2 can precisely control the magnitude of the current flowing through the electromagnetic coil 410, thereby precisely controlling the magnitude of the magnetic repulsion between the electromagnetic coil 410 and the permanent magnet column 413, and further precisely controlling the magnitude of the pressure applied to the conical valve plate 414. When the internal pressure of the steelmaking blast furnace 1 exceeds the applied pressure of the conical valve plate 414, the conical valve plate 414 will be pushed upward, thereby opening the outlet cone 46 to release pressure. Through the cooperation of the above components, the internal pressure of the steelmaking blast furnace 1 can be precisely controlled.

[0026] In this configuration, the top plate 43 is provided with vent holes 47, which are equidistantly distributed along the circumference of the top plate 43.

[0027] With the above configuration, the vent 47 connects the vent cylinder 42 to the upper vent bend 45.

[0028] In this method, a limiting strip 416 is fixedly connected to the outer wall of the fixed cylinder 49, and a sliding groove adapted to the limiting strip 416 is provided on the inner wall of the sleeve 412.

[0029] With the above-mentioned arrangement, the limiting strip 416 slides against the groove on the inner wall of the sleeve 412, restricting the rotational freedom of the sleeve 412 outside the fixed cylinder 49.

[0030] In this method, a flexible gasket 411 is fixedly installed at the bottom of the electromagnetic coil 410.

[0031] With the above-described arrangement, the flexible pad 411 provides buffer protection so that even if the permanent magnet column 413 hits the bottom of the electromagnetic coil 410, it will be protected by the flexible pad 411.

[0032] In this method, the upper side of the conical valve plate 414 is provided with side notches 415 at equal intervals along the circumference, and the lower side of the conical valve plate 414 is provided with a sealing ring 417 along the circumference. The sealing ring 417 is made of aluminum silicate fiber high temperature resistant material.

[0033] With the above-mentioned design, the aluminum silicate fiber material has good fire resistance and heat insulation effect, can be in direct contact with flame, has a tough texture, strong wind erosion resistance, and can provide a stable sealing effect. The side notch 415 increases the ventilation diameter of the upper edge of the conical valve plate 414, thereby increasing the ventilation volume when the outlet cone 46 is opened, which facilitates rapid depressurization of the inside of the steelmaking blast furnace 1.

[0034] In this configuration, a first mounting plate 41 is fixedly connected to the bottom of the air outlet 42. The first mounting plate 41 is screwed onto the upper side of the air outlet port 3. A second mounting plate 44 is fixedly connected to the bottom of the air outlet bend 45. The second mounting plate 44, the top plate 43, and the air outlet 42 are screwed together.

[0035] With the above-mentioned configuration, the first mounting plate 41, the second mounting plate 44, the top plate 43, and the air outlet 42 are all connected by screws, which facilitates the overall disassembly of the emergency venting mechanism 4, makes it easier to inspect and repair the internal components of the emergency venting mechanism 4 later, and facilitates daily maintenance.

[0036] The working principle of the sealed and stable emergency venting valve plate provided by this utility model is as follows:

[0037] In use, the gas pressure control value inside the steelmaking blast furnace 1 is preset in the controller 2. When the steelmaking blast furnace 1 is working, when the gas pressure inside the steelmaking blast furnace 1 rises to the gas pressure control value, the gas pressure will push the conical valve plate 414 to move upward, so that the gas outlet cone 46 is in the open state, and the pressure inside the steelmaking blast furnace 1 is relieved. When the gas pressure inside the steelmaking blast furnace 1 is less than the gas pressure control value, the magnetic repulsion between the electromagnetic coil 410 and the permanent magnet column 413 exerts a pressure on the conical valve plate 414 that is greater than the pressure exerted on the conical valve plate 414 by the gas pressure. At this time, the conical valve plate 414 descends, blocking the gas outlet cone 46, so that the gas outlet cone 46 is in a sealed state, and thus the inside of the steelmaking blast furnace 1 is restored to a sealed state.

[0038] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A sealed and stable emergency venting valve plate, characterized in that, It includes a steelmaking blast furnace (1), and the upper side of the steelmaking blast furnace (1) is fixedly connected to an exhaust port (3), and an emergency venting mechanism (4) is provided on the upper side of the exhaust port (3); The emergency venting mechanism (4) includes an air vent (42), a top plate (43) is provided on the upper side of the air vent (42), an air vent bend (45) is installed on the upper side of the top plate (43), an mounting base (48) is screwed to the bottom of the top plate (43), a fixed cylinder (49) is fixedly connected to the lower side of the mounting base (48), an electromagnetic coil (410) is fixedly installed inside the fixed cylinder (49), a sleeve (412) is slidably sleeved on the outer side of the fixed cylinder (49), a permanent magnet column (413) is fixedly installed inside the sleeve (412), a conical valve plate (414) is screwed to the bottom of the sleeve (412), an air vent cone (46) is provided at the lower end of the air vent (42), and the conical valve plate (414) and the air vent cone (46) are matched in size.

2. The sealed and stable emergency venting valve plate according to claim 1, characterized in that, A controller (2) is fixedly installed on the outer wall of the steelmaking blast furnace (1), and the controller (2) is electrically connected to the electromagnetic coil (410).

3. The sealed and stable emergency venting valve plate according to claim 1, characterized in that, The bottom of the air outlet (42) is fixedly connected to a first mounting plate (41), which is screwed onto the upper side of the air outlet (3).

4. The sealed and stable emergency venting valve plate according to claim 1, characterized in that, The bottom end of the air outlet bend (45) is fixedly connected to a second mounting plate (44), and the second mounting plate (44), the top plate (43), and the air outlet cylinder (42) are screwed together.

5. The sealed and stable emergency venting valve plate according to claim 1, characterized in that, The top plate (43) is provided with air vents (47), which are equidistantly distributed along the circumference of the top plate (43).

6. The sealed and stable emergency venting valve plate according to claim 1, characterized in that, A limiting strip (416) is fixedly connected to the outer wall of the fixed cylinder (49), and a sliding groove adapted to the limiting strip (416) is provided on the inner wall of the sleeve (412).

7. The sealed and stable emergency venting valve plate according to claim 1, characterized in that, A flexible pad (411) is fixedly installed at the bottom of the electromagnetic coil (410).

8. The sealed and stable emergency venting valve plate according to claim 1, characterized in that, The conical valve plate (414) has side notches (415) evenly spaced along the circumference on the upper side, and a sealing ring (417) is installed along the circumference on the lower side of the conical valve plate (414). The sealing ring (417) is made of aluminum silicate fiber high temperature resistant material.

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