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CN-224230702-U - Explosion-proof door special for heating furnace and airtight combustion heating furnace

CN224230702UCN 224230702 UCN224230702 UCN 224230702UCN-224230702-U

Abstract

The utility model discloses a special explosion-proof door for a heating furnace and a closed combustion heating furnace, and relates to the technical field of heating furnaces, wherein the special explosion-proof door for the heating furnace comprises a door frame, a door frame and a heat insulation layer, wherein the door frame is fixedly and penetratingly arranged in the furnace wall and the heat insulation layer; the explosion-proof door comprises a heating furnace, a heat preservation assembly, a rupture disc, an explosion guide wire, a special explosion-proof door for the heating furnace and a closed combustion heating furnace, wherein the heat preservation assembly is arranged inside the door frame, at least three heat preservation module stacking layers are arranged on the heat preservation assembly along the central line direction of the door frame, the stacking directions of heat preservation modules in the adjacent two heat preservation module stacking layers are different, the rupture disc is fixed and sealed at one end part of the door frame outside the heating furnace through bolts, the surface of the rupture disc is provided with the explosion guide wire for guiding the explosion direction, and the explosion-proof door is special for the heating furnace and the closed combustion heating furnace.

Inventors

  • MA YUNSHENG
  • JIANG XIAOMING
  • BAO XUEWEI
  • CHENG XIANRUI
  • MA JINGBIN
  • LI ZHIKAI

Assignees

  • 山东京博石油化工有限公司

Dates

Publication Date
20260512
Application Date
20250521

Claims (10)

  1. 1. The utility model provides a special explosion vent of heating furnace for install in the oven and heat preservation (5) of heating furnace, its characterized in that, special explosion vent of heating furnace includes: A door frame (1) which is fixedly and penetratingly arranged in the furnace wall and the heat preservation layer (5); the heat preservation assembly (2) is arranged inside the door frame (1), and forms a heat preservation layer of the heating furnace together with the furnace wall and the heat preservation layer (5), at least three heat preservation module stacking layers are arranged on the heat preservation assembly (2) along the central line direction of the door frame (1), and the stacking directions of heat preservation modules in two adjacent heat preservation module stacking layers are different; the explosion piece (3) is fixed by bolts and is arranged at one end part of the door frame (1) outside the heating furnace in a sealing way, and an explosion guide wire for guiding the explosion direction is arranged on the surface of the explosion piece (3).
  2. 2. The explosion door special for the heating furnace according to claim 1, wherein the heat preservation component (2) sequentially comprises a nano heat preservation module stacking layer (21), a nano fiber blanket stacking layer (22) and a ceramic nano fiber blanket stacking layer (23) along the central line direction of the door frame (1); The stacking direction of the nano heat preservation module stacking layer (21) and the ceramic nanofiber blanket stacking layer (23) is coplanar with the surfaces of the furnace wall and the heat preservation layer (5); The stacking direction of the nanofiber blanket stacking layer (22) is perpendicular to the surface of the furnace wall and the heat preservation layer (5).
  3. 3. The explosion door special for the heating furnace according to claim 2, wherein the nano heat preservation module joints between two adjacent groups of stacked layers in the nano heat preservation module stacked layers (21) are not butt joint; And/or the number of the groups of groups, The nanofiber blanket seams between two adjacent groups of stacked layers in the nanofiber blanket stacked layers (22) are not butt-jointed; And/or the number of the groups of groups, The ceramic nanofiber blanket seams between two adjacent groups of stacked layers are not butt-jointed in the ceramic nanofiber blanket stacked layers (23).
  4. 4. The special explosion door for the heating furnace according to claim 2, wherein an expanded graphite sealing strip (24) is filled between two adjacent nanometer heat preservation modules in the nanometer heat preservation module stacking layer (21) and/or between the nanometer heat preservation modules and the inner wall of the adjacent door frame (1); And/or the number of the groups of groups, The expanded graphite sealing strips (24) are filled between two adjacent nanofiber carpets and/or between the nanofiber carpets and the inner wall of the adjacent door frame (1) in the nanofiber carpet stacking layer (22); And/or the number of the groups of groups, The expanded graphite sealing strips (24) are filled between two adjacent ceramic nanofiber blankets and/or between the ceramic nanofiber blankets and the inner wall of the adjacent door frame (1) in the ceramic nanofiber blanket stacking layer (23).
  5. 5. The explosion door special for a heating furnace according to claim 1, wherein the blasting guide line comprises a frame-type guide line (31) and a crossing-type guide line (32), and an end point of the crossing-type guide line (32) overlaps with a corner end point of the frame-type guide line (31).
  6. 6. The special explosion door for the heating furnace according to claim 5, wherein the rupture disc (3) is of a square structure, the frame-shaped guide wire (31) is of a square guide wire, the crossing guide wire (32) is of an X-shaped guide wire, and four end points of the X-shaped guide wire are respectively overlapped with four corner end points of the square guide wire one by one.
  7. 7. The special explosion door for the heating furnace according to claim 1, wherein the rupture disk (3) is pressed at the end part of the door frame (1) through a pressing ring (41), and the pressing ring (41) is fixedly connected with the door frame (1) through a bolt; And sealing rings are respectively arranged between the two sides of the rupture disc (3) and the end face of the door frame (1) and the compression joint face of the compression ring (41).
  8. 8. The special explosion door for the heating furnace according to claim 7, wherein a sealing ring between the rupture disc (3) and the end face of the door frame (1) is a high-temperature silicon rubber sealing ring (6); the sealing ring between the compression joint surface of the rupture disc (3) and the compression ring (41) is a metal winding gasket sealing ring (7).
  9. 9. The explosion door special for a heating furnace according to any one of claims 1 to 8, further comprising a protective frame assembly (4) arranged outside the heating furnace and used for containing fragments after the explosion of the rupture disk (3); The protection frame component (4) is fixedly connected with the door frame (1) relatively.
  10. 10. A closed combustion heating furnace, characterized by comprising the special explosion door for the heating furnace according to any one of claims 1 to 9.

Description

Explosion-proof door special for heating furnace and airtight combustion heating furnace Technical Field The utility model relates to the technical field of heating furnaces, in particular to a special explosion door for a heating furnace. In addition, the utility model also relates to a closed combustion heating furnace comprising the special explosion-proof door for the heating furnace. Background In industrial production, a heating furnace is used as common heat energy conversion equipment and is widely applied to various fields such as petroleum, chemical industry, metallurgy and the like. The explosion door is used as an important safety component of the heating furnace, and the function of the explosion door is important. When the pressure in the heating furnace suddenly rises to exceed the safety threshold value due to various reasons (such as abnormal fuel combustion, pressure control system faults and the like), the explosion door can be opened in time to release pressure, so that serious accidents such as explosion and the like of the heating furnace are avoided, and the safety of equipment and personnel is ensured. The traditional heating furnace explosion-proof door mainly adopts a common gravity door body structure, and the opening pressure is controlled by arranging a spring or a counterweight and the like. However, this conventional structure has a number of drawbacks that are difficult to overcome. Firstly, in the aspect of sealing performance, the traditional explosion-proof door is influenced by severe working conditions such as high temperature, high pressure, vibration and the like for a long time, and a sealing piece between the door body and the door frame is easy to age and deform, so that leakage phenomenon frequently occurs. Once leakage occurs, not only energy waste is caused, but also high-temperature gas, flame and the like in the heating furnace can leak into the surrounding environment, thereby seriously threatening the personal safety of operators. Secondly, the opening pressure control of the traditional explosion door is not accurate enough. After the structure such as the spring or the counterweight is used for a long time, the elasticity or the weight of the structure can be changed, so that the actual opening pressure of the explosion door is deviated from the design pressure. If the opening pressure is too high, the explosion-proof door cannot be opened in time to relieve pressure when the internal pressure of the heating furnace reaches a dangerous value, and the risk of explosion is increased, and if the opening pressure is too low, the explosion-proof door can be opened by mistake under normal operation pressure, so that the normal operation of the heating furnace is affected. In addition, after the traditional explosion-proof door is opened and closed for many times, the abrasion between the door body and the door frame is increased, the sealing performance is further reduced, the service life is further prolonged, frequent maintenance and replacement are needed, and the production cost and the equipment downtime are increased. For a closed heating furnace, the sealing performance of the heating furnace on the combustion environment is extremely high, and the leakage problems of the traditional explosion-proof door seriously influence the realization of the closed combustion condition of the heating furnace, so that the combustion efficiency and the energy utilization rate of the heating furnace are influenced. In summary, how to solve the problems of insufficient opening sensitivity and insufficient tightness of the explosion door is a problem to be solved by those skilled in the art. Disclosure of utility model Therefore, the utility model aims to provide the special explosion-proof door for the heating furnace, by adopting the rupture disk with the blasting guide wire as the safety component of the explosion-proof door, the opening sensitivity of the explosion-proof door is effectively improved, the tightness of the explosion-proof door is effectively improved, meanwhile, the heat preservation component is additionally arranged in the door frame, the heat preservation performance of the explosion-proof door is improved, and the energy waste caused by heat loss at the position of the rupture disk is further reduced. The utility model also aims to provide a closed combustion heating furnace comprising the special explosion-proof door for the heating furnace, which has the same technical characteristics and can solve the same technical problems. In order to achieve the above object, the present utility model provides the following technical solutions: The special explosion door for the heating furnace is used for being installed in the furnace wall and the heat preservation layer of the heating furnace and comprises the following components: the door frame is fixedly and penetratingly arranged in the furnace wall and the heat preservation layer; The heat preservation